DESC:LEAKAGE DETECTION ASSEMBLY FOR A PUMP

TECHNICAL FIELD

[001] The present invention relates to the field of pumping devices, and more particularly, to a leakage detection assembly for a pump capable of efficiently detecting leakage of fluid in the pump.

BACKGROUND OF THE INVENTION

[002] The subject matter discussed in the background section should not be assumed to be prior art merely because of its mention in the background section. Similarly, a problem mentioned in the background section or associated with the subject matter of the background section should not be assumed to have been previously recognized in the prior art. The subject matter in the background section merely represents different approaches, which in and of themselves may correspond to implementations of the claimed technology.

[003] A pump is a device that moves fluids (liquids or gases), by mechanical action, typically converted from electrical energy into hydraulic energy. Mechanical pumps serve in a wide range of applications such as pumping water from wells, pumping paints and chemicals, aquarium filtering, pond filtering and aeration, in the energy industry for pumping oil and natural gas or for operating cooling towers and other components of heating, ventilation and air conditioning systems.

[004] An Air-Operated Double-Diaphragm (AODD) pump is a type of reciprocating diaphragm pump which includes two diaphragms driven by compressed air for pumping a fluid. Fig. 1 illustrates a conventional AODD pump 100. An air distribution system 102 typically applies air alternately to the two diaphragms 104 and 106. These diaphragms 104, 106 are typically made of rubber, and have a service life that varies in the range of several million cycles. The diaphragms 104, 106 are prone to damage due to high pressure of fluids in pumping chambers 108 of the AODD pump 100. Also, after a certain period of operation of the AODD pump 100, the diaphragm 104, 106 fails naturally after completing its cycle. Due to the failure of the diaphragm 104, 106, the fluid present in the pumping chamber 108 is leaked out of the pump. The leaked fluid may enter and damage the air distribution system 102 of the pump 100. Efforts have been made in the past to detect such instances of leakage of the fluid in the AODD pump. However, such detection techniques employ expensive devices with complex circuitries to carry out the leakage detection.

[005] Despite advancements in leakage detection for AODD pumps, existing methods still face challenges in accurately and efficiently identifying leaks, especially under variable operational pressures and with different fluid types. The complexity and cost associated with current detection technologies hinder their widespread adoption, particularly in applications requiring high sensitivity and adaptability to diverse pumping conditions. Consequently, there is a pressing need for innovative solutions that enhance the accuracy of leakage detection while being adaptable to various operational conditions and fluid types.

[006] There is therefore a need to develop a leakage detection assembly having a simple configuration for efficiently detecting leakage of the fluid in an AODD pump.

OBJECTS OF THE INVENTION

[007] It is an object of the present invention to provide a leakage detection assembly capable of detecting leakage of fluid in a pump.

[008] It is another object of the present invention to provide a low-cost leakage detection assembly which includes simple configuration of components for detecting leakage of the fluid in the pump.

[009] It is another object of the present invention to provide a leakage detection assembly capable of being retrofitted in existing pumps.

[010] It is another object of the present invention, to enhance the accuracy of leakage detection by employing a secondary beaded-hole diaphragm and a hollow ring, which together facilitate precise guidance of leaked fluid towards the detection sensor, thereby ensuring a more reliable leakage detection even under varying operational pressures and conditions.

[011] It is another object of the present invention, to provide a leakage detection assembly that offers adaptability to various operational conditions and fluid types through an inner chamber guide area, designed to customize the flow path of the leaked fluid. This customization ensures that the assembly can be effectively applied across a wide range of pump models and operational scenarios, enhancing the versatility and applicability of the leakage detection assembly.

SUMMARY OF THE INVENTION

[012] The summary is provided to introduce aspects related to a leakage detection assembly for a pump, and the aspects are further described below in the detailed description. This summary is not intended to identify essential features of the claimed subject matter, nor is it intended for use in determining or limiting the scope of the claimed subject matter.

[013] In a preferred embodiment, the present invention provides a leakage detection assembly for a pump, comprising: a diaphragm housing configured to enclose a first diaphragm and a second diaphragm arranged axially, wherein the first diaphragm delineates a portion of the pumping chamber and the second diaphragm is axially spaced from the first diaphragm to form a detection area within the pumping chamber for accumulating fluid indicative of leakage from the first diaphragm; a polymer ring, disposed axially between the first and second diaphragms, characterized by its resilience to chemical and physical wear, to ensuring the structural integrity of the second diaphragm against potential damage or rupture due to operational stresses; an elongated passage, formed axially between the first diaphragm and the polymer ring, incorporating an axial slit designed to facilitate controlled fluid communication from the pumping chamber to the detection area, enabling the detection of leakage while mitigating direct pressure impact on the second diaphragm; a diaphragm cover, adapted to be fastened with a pump body, such that the first diaphragm, polymer ring and second diaphragm are securely arranged between the diaphragm cover and the pump body, wherein the diaphragm cover houses a leak detection sensor operatively mounted within the diaphragm cover and in fluid communication with the detection area, the leak detection sensor is configured to sense the presence of fluid indicative of leakage from the first diaphragm; and a guiding groove, integrally formed on an inner surface of the housing or the polymer ring, in fluid communication with the elongated passage, designed to direct the flow of leaked fluid towards the leak detection sensor, thereby enhancing the efficiency and sensitivity of leakage detection.

[014] In an embodiment, wherein the diaphragm cover enables the leak detection sensor to be selectively position within the cover to optimize detection of fluid indicative of leakage.

[015] In an embodiment, wherein the polymer ring is composed of a material selected from a group including polytetrafluoroethylene (PTFE), polyethylene (PE), and polyvinylidene fluoride (PVDF), santoprene, rubber, derivatives of rubber and plastics chosen for its high resistance to chemical corrosion and physical deformation, thereby enhancing the longevity and reliability of the leakage detection mechanism.

[016] In an embodiment, wherein the leak detection sensor is a device selected from the group consisting of optical sensors, conductivity sensors, and capacitive sensors, each configured to provide high sensitivity and specificity in the detection of various types of fluids indicative of leakage.

[017] In an embodiment, wherein the leak detection sensor configured to detect the presence and level of the leaked fluid within the detection area, enhancing the precision and reliability of leakage detection.

[018] In a further embodiment, comprising a power supply unit operatively connected to the leak detection sensor, configured to initiate a predefined response upon detection of leakage, accumulated in an outlet of the elongated passage, crossing a threshold value.

[019] In an embodiment, wherein the predefined response including at least automatically shutting down the pump to prevent further leakage.

[020] In an embodiment, wherein the polymer ring includes at least one groove having a U-shaped, V-shaped, or O-shaped profile to provide the passage for the fluid leaked from the pumping chamber, thereby facilitating the directed flow of leaked fluid towards the leak detection sensor.

[021] In an embodiment, wherein the pump may be an air-operated double-diaphragm (AODD) pumps and the assembly is capable of being retrofitted into existing pump bodies, allowing for an efficient upgrade of the AODD pumps to include the leakage detection feature without the necessity for significant structural modifications to the pump.

[022] In another aspect of the present invention, a method for detecting leakage in a pump, comprising: enclosing a first diaphragm and a second diaphragm within a diaphragm housing, wherein the first diaphragm delineates a portion of the pumping chamber and the second diaphragm is axially spaced from the first diaphragm to form a detection area within the pumping chamber intended for accumulating fluid indicative of leakage from the first diaphragm; disposing a polymer ring axially between the first and second diaphragms, utilizing its resilience to chemical and physical wear to maintain the structural integrity of the second diaphragm against potential damage or rupture due to operational stresses; forming an elongated passage axially between the first diaphragm and the polymer ring, incorporating an axial slit to enable controlled fluid communication from the pumping chamber to the detection area, facilitating the detection of leakage while reducing the direct pressure impact on the second diaphragm; fastening a diaphragm cover with a pump body, ensuring that the first diaphragm, the polymer ring, and the second diaphragm are securely positioned between the diaphragm cover and the pump body, where the diaphragm cover houses a leak detection sensor; configuring the leak detection sensor, housed within the diaphragm cover, to be in fluid communication with the detection area, enabling it to detect the presence of fluid indicative of leakage from the first diaphragm; and integrating a guiding groove on an inner surface of the diaphragm housing or the polymer ring, in fluid communication with the elongated passage, to direct leaked fluid towards the leak detection sensor, thereby improving the efficiency and sensitivity of the leakage detection process.

[023] In another aspects of a preferred embodiment, the present invention provides a leakage detection assembly for a pump, comprising: a diaphragm housing configured to enclose a primary flexible diaphragm and a secondary beaded-hole diaphragm, wherein the primary diaphragm delineates a portion of the pumping chamber and the secondary diaphragm is axially spaced from the primary diaphragm, wherein upon failure of the primary diaphragm allows fluid to enter the space between the primary diaphragm and secondary diaphragm to form a detection area within the pumping chamber for accumulating fluid indicative of leakage from the primary diaphragm; a polymer ring, disposed axially between the primary and secondary diaphragms, characterized by its resilience to chemical and physical wear, to ensuring the structural integrity of the secondary diaphragm against potential damage or rupture due to operational stresses; an elongated passage, formed axially between the primary diaphragm and the polymer ring, incorporating an axial slit designed to facilitate controlled fluid communication from the pumping chamber to the detection area, enabling the detection of leakage while mitigating direct pressure impact on the secondary diaphragm; a hollow ring of flexible material, positioned to guide fluid from the space between the primary and secondary diaphragms towards a leak detection pathway; an inner chamber guide area introduced post the hollow ring, designed to provide a controller guide profile for the fluid, ensuring precise redirection towards a sensor mounting block; a diaphragm cover, adapted to be fastened with a pump body, such that the primary diaphragm, polymer ring and secondary diaphragm are securely arranged between the diaphragm cover and the pump body, wherein the diaphragm cover houses a leak detection sensor operatively mounted within the diaphragm cover and in fluid communication with the detection area, the leak detection sensor is configured to sense the presence of fluid indicative of leakage from the primary diaphragm; and a guiding mechanism, including a fluid guiding tube or pipe, ensuring efficient and accurate detection of leakage by directing fluid through the hollow ring, inner chamber guide are, towards the leak detection sensor.

[024] In an embodiment, wherein the beaded-hole diaphragm incorporates multiple beaded holes strategically placed to optimize the flow path of media towards the leak detection sensor, thus enhancing the assembly's sensitivity and reliability in leakage detection.

[025] In an embodiment, wherein the media guiding tube or pipe is designed to optimize the flow path of the media towards the leak detection sensor, enhancing the sensitivity and accuracy of leakage detection.

[026] In an embodiment, wherein the inner chamber guide area is engineered to provide a customizable guide profile for fluid, accommodating various operational conditions and fluid types, thereby ensuring the adaptability and effectiveness of the leakage detection across different pump configurations.

[027] In an embodiment, wherein the inner chamber guide area and the one or more adjacent holes in the beaded-hole diaphragm are configured to provide a customizable flow path for different types of fluid, allowing for versatile application across various pump models and operational conditions.

[028] In another aspect of the present invention, a method for detecting leakage in a pump, comprising the steps of: enclosing a primary flexible diaphragm and a secondary beaded-hole diaphragm within a diaphragm housing, where the primary diaphragm delineates a portion of the pumping chamber and, upon its failure, allows fluid to enter the space between the primary and secondary diaphragms to form a detection area; disposing a polymer ring axially between the primary and secondary diaphragms to ensure the structural integrity of the secondary diaphragm against operational stresses; forming an elongated passage with an axial slit between the primary diaphragm and the polymer ring to enable controlled fluid communication to the detection area, facilitating leakage detection while protecting the secondary diaphragm; positioning a hollow ring of flexible material to guide fluid from the space between the primary and secondary diaphragms towards the leak detection pathway; introducing an inner chamber guide area after the hollow ring to provide a controlled guide profile for the fluid, ensuring precise redirection towards the sensor mounting block; fastening a diaphragm cover to the pump body, wherein the diaphragm cover houses a leak detection sensor in fluid communication with the detection area, configured to sense the presence of fluid indicative of primary diaphragm leakage; utilizing a fluid guiding tube or pipe to direct fluid efficiently through the hollow ring and the inner chamber guide area towards the leak detection sensor, enhancing leakage detection accuracy.

[029] In an embodiment, wherein multiple beaded holes are strategically incorporated in the secondary beaded-hole diaphragm to optimize the fluid flow path towards the leak detection sensor, thereby enhancing the sensitivity and reliability of the leakage detection process.

[030] In an embodiment, wherein the fluid guiding tube or pipe is designed to optimize the fluid flow path towards the leak detection sensor, enhancing both the sensitivity and accuracy of leakage detection.

[031] In an embodiment, wherein the inner chamber guide area is engineered to provide a customizable guide profile for fluid, accommodating various operational conditions and fluid types, ensuring adaptability and effectiveness of the leakage detection across different pump configurations.

[032] In an embodiment, wherein the inner chamber guide area and one or more adjacent holes in the beaded-hole diaphragm are configured to offer a customizable fluid flow path for diverse fluid types, allowing for versatile application across various pump models and operational scenarios.

BRIEF DESCRIPTION OF ACCOMPANYING DRAWINGS

[033] The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[034] In the figures, similar components and/or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label with a second label that distinguishes among the similar components. If only the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label.

[035] Fig. 1 illustrates a conventional Air-Operated Double-Diaphragm (AODD) pump, in accordance with prior art.

[036] Fig. 2 illustrates an exploded view of a leakage detection assembly for an Air-Operated Double-Diaphragm (AODD) pump, in accordance with an embodiment of the present invention.

[037] Figs. 3 and 4 illustrate sectional views of the AODD pump showing different arrangement of components of the leakage detection assembly, in accordance with an embodiment of the present invention.

[038] Fig. 5 illustrates sectional view of the leakage detection assembly for an Air-Operated Double-Diaphragm (AODD) pump showcasing an arrangement featuring a secondary beaded-hole diaphragm and a hollow ring, in accordance with an embodiment of the present invention.

[039] Fig. 6 illustrates sectional view of the leakage detection assembly, highlighting an advanced fluid redirection system in accordance with an embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

[040] The detailed description set forth below in connection with the appended drawings is intended as a description of various embodiments of the present invention and is not intended to represent the only embodiments in which the present invention may be practiced. Each embodiment described in this disclosure is provided merely as an example or illustration of the present invention, and should not necessarily be construed as preferred or advantageous over other embodiments. The detailed description includes specific details for the purpose of providing a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without these specific details.

[041] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.

[042] If the specification states a component or feature “may”, “can”, “could”, or “might” be included or have a characteristic, that particular component or feature is not required to be included or have the characteristic.

[043] The present invention relates to a leakage detection assembly for a pump capable of efficiently detecting leakage of fluid in the pump. The pump may be a positive displacement pump, such as, a membrane pump or an Air-Operated Double-Diaphragm (AODD) pump. The leakage detection assembly includes inexpensive components having simple configuration which may be easily installed or assembled to control operation of the pump based on detecting of leakage of the fluid. The present invention aims to address the challenges in conventional Air-Operated Double-Diaphragm (AODD) pump by introducing novel components and mechanisms that simplify the detection process, improve reliability, and offer versatility across a range of pumping scenarios, underscoring the importance of developing more effective and adaptable leakage detection assemblies for AODD pumps

[044] Fig. 2 illustrates an exploded view of the leakage detection assembly for the AODD pump which includes a pump body 202 containing a pumping chamber in which a fluid to be pumped is provided. The pump body 202 may include check/ball valves at an inlet and an outlet of the pumping chamber to control flow of the fluid passing therefrom. The AODD pump also includes a first diaphragm 204 and a second diaphragm 206. The first diaphragm 204 may be made of a polymer, such as Polytetrafluoroethylene (PTFE). The second diaphragm 206 may be made of a thermoplastic elastomer, such as Santoprene. A rubber/elastomer beed type diaphragm may be used as the second diaphragm 206. A polymer ring 208 is arranged between the first diaphragm 204 and the second diaphragm 206. The polymer ring 208 is made of PTFE material. The polymer ring 208 may be coupled with the first diaphragm 204 and the second diaphragm 206 using fasteners, such as bolts, screws, pins and the like. The polymer ring 208 may include at least one groove 210 to provide a passage for the fluid leaked from the pumping chamber during rupture or damage of the first diaphragm 204. The groove 210 may have any of a U-shaped profile, a V-shaped profile or an O-shaped profile, depending on requirements. The second diaphragm may also include an axial slit/groove (as clearly shown in Fig. 3) corresponding to the groove 210 of the polymer ring 208.

[045] Figs. 3 and 4 illustrate sectional views of the AODD pump showing different arrangement of components of the leakage detection assembly, in accordance with an embodiment of present invention. The AODD pump may also include a diaphragm cover 212 adapted to be fastened with the pump body 202 such that the first diaphragm 204, the polymer ring 208, and the second diaphragm 206 are arranged between the diaphragm cover 212 and the pump body 202. The diaphragm cover 212 may be fastened to the pump body 202 using fasteners bolts, screws, pins and the like passing through corresponding slots of the first diaphragm 204, the polymer ring 208, and the second diaphragm 206. The diaphragm cover 212 may house a leak detection sensor (as clearly shown in Figs. 3 and 4) configured to detect leakage of the fluid from the pumping chamber once the first diaphragm 204 is damaged or ruptured.

[046] When the first diaphragm 204 is ruptured either due to high pressure of the fluid in the pumping chamber or due to end of its service life, the leaked fluid passes through the groove 210 of the polymer ring 208 present in contact with the first diaphragm 204. The leaked fluid then passes through the axial slit 302 of the second diaphragm 206. As shown in Fig. 4, a rubber/elastomer beed type diaphragm may be selected as the second diaphragm 206. The diaphragm housing (308) includes a passage 304 having an inlet in communication with axial slit 302. The passage 304 may have an outlet in the form of a tank in which the leaked fluid passing through the axial slit 302 of the second diaphragm 206 accumulates.

[047] The diaphragm housing 308 houses the leak detection sensor 306 that detects level of the leaked fluid in the outlet of the passage 304. The passage 304 may include one or more curved or inclined members fitted together to fluidly connect the axial slit 302 of the second diaphragm 206 with the leak detection sensor 306. The leak detection sensor 306 is connected with a power supply unit (not shown) of the AODD pump. The leak detection sensor 304 may be selected from group consisting of optical sensors, conductivity sensors, and capacitive sensors, each configured to provide high sensitivity and specificity in the detection of various types of fluids indicative of leakage. Flow of the leaked fluid is shown as yellow arrows in Figs. 3 and 4. Once a level of the leaked fluid accumulated in the outlet of the passage 304 crosses a threshold value, the leak detection sensor 306 outputs a signal to the power supply unit indicating of the leakage, to stop or halt operation of the pump. The leak detection sensor 306 may automatically stop the operation of the pump when the level of the leaked fluid accumulated in the outlet of the passage 304 crosses the threshold value.

[048] Thus, the leakage detection assembly prevents any damage or rupture of the second diaphragm 206 by efficiently stopping operation of the pump once the first diaphragm 204 is damaged, thereby improving service life of the second diaphragm 206. The leakage detection assembly also protects other components in vicinity of the pumping chamber, for instance, an air distribution system, from damage by effectively halting operation of the pump when the first diaphragm 204 is damaged. The components of the leakage detection assembly are inexpensive, and are capable of being retrofitted in existing pumping apparatuses.

[049] Fig. 5 illustrates sectional view of the leakage detection assembly for an Air-Operated Double-Diaphragm (AODD) pump. In a preferred embodiment of Figure 5, showcases an arrangement featuring a secondary beaded-hole diaphragm and a hollow ring, designed to enhance the precision of leakage detection upon the failure of the primary diaphragm. As shown in Fig. 5, this embodiment enhances the leakage detection assembly by introducing a secondary beaded-hole diaphragm 502, 602 alongside the primary flexible diaphragm 501, 601. Upon failure of diaphragm 501, 601, fluid is guided into the space between diaphragms 501, 601 and 502, 602, moving towards a hollow ring 505, 605 made of flexible material. This ring serves to direct the fluid efficiently towards the detection area. The assembly's resilience is bolstered by a polymer ring 208, positioned to maintain the secondary diaphragm's integrity. Fluid communication is controlled through an elongated passage, featuring an axial slit, ensuring precise leakage detection. The assembly is secured within a pump via the diaphragm cover 212 that houses a leak detection sensor 306, strategically placed to monitor the detection area. A guiding mechanism, including a fluid guiding tube or pipe 503, 603, channels the fluid through the hollow ring 505, 605 to the sensor, optimizing leakage detection.

[050] In an embodiment of the present invention, the system is designed to detect the failure of the primary flexible diaphragm 501, 601, a critical event that triggers the leakage detection process. This diaphragm, integral to the pumping mechanism, upon failure allows fluid to bypass its seal, necessitating immediate detection to prevent system damage or failure. Upon detection of failure, the fluid is redirected through secondary diaphragm 502, 602. The secondary beaded-hole diaphragm 502, 602 is axially positioned relative to the primary diaphragm 501, 601 to catch and temporarily hold the fluid escaping due to the primary diaphragm's failure. This secondary diaphragm 502, 602 is equipped with beaded holes that facilitate controlled passage of the fluid, marking the first step in the fluid's directed journey towards detection.

[051] A polymer ring 208, placed between the primary and secondary diaphragms, plays a dual role. It not only helps maintain the structural integrity of the secondary diaphragm 502, 602 but also contributes to the controlled flow of fluid, ensuring that the fluid's passage towards the leak detection pathway is unimpeded and accurately directed. As shown in Fig. 5 and Fig. 6, the hollow ring 505, 605, made of a flexible material, is strategically located to receive fluid from the space between the diaphragms. It acts as a conduit, guiding the fluid efficiently towards the leak detection pathway, ensuring that the fluid's travel is both directed and contained within the assembly's design parameters. In an exemplary embodiment, the polymer ring 208 and hollow ring is composed of a flexible material selected from a group including polytetrafluoroethylene (PTFE), polyethylene (PE), and polyvinylidene fluoride (PVDF), SANTOPRENE, RUBBER, derivatives of rubber and plastics chosen for its high resistance to chemical corrosion and physical deformation, thereby enhancing the longevity and reliability of the leakage detection mechanism.

[052] In a further embodiment of the present invention, the leak detection assembly comprises a guided mechanism, typically a fluid guiding tube or pipe 503, 603, leading directly to the leak detection sensor housed within the diaphragm cover 212. This sensor, upon detecting the presence of fluid, triggers the system's response to the leakage, allowing for immediate corrective action.

[053] Fig. 6 illustrates sectional view of the leakage detection assembly, highlighting an advanced fluid redirection system and method. This system includes an inner chamber guide area 503, 603 following the hollow ring 505, 605, specifically engineered to guide leaked fluid through a customized path for improved accuracy in detecting leakage. In this embodiment, the leakage detection assembly incorporates an inner chamber guide area 503, 603 post the hollow ring 505, 605 to refine fluid redirection towards the sensor mounting block 504, 604, which accommodates the leak detection sensor. This arrangement is designed to provide a controlled guide profile for the fluid, ensuring its precise redirection from the space between the primary and secondary diaphragms through the innovative guiding system. The assembly leverages the structural benefits of a polymer ring 208 for diaphragm protection and utilizes an elongated passage with an axial slit for controlled fluid movement. The diaphragm cover 212 secures the assembly to the pump, facilitating accurate leakage detection by directing fluid through the enhanced guiding system to the leak detection sensor. The embodiment emphasizes a refined fluid guidance system incorporating an inner chamber guide area 503, 603, following the hollow ring 505, 605, to improve leakage detection accuracy. Each element works in concert to manage and direct fluid flow post-primary diaphragm failure.

[054] The primary flexible diaphragm 501, 601, typically made from a flexible material like PTFE, is crucial for the pump's operation. Its failure allows media to escape, necessitating detection. Once the primary diaphragm fails, media enters the space between it and the secondary diaphragm 502, 602, initiating the detection process. The hollow ring 505, 605, made from a flexible material, possibly PTFE, the hollow ring 505, 605 guides the escaped media from the space between the primary and secondary diaphragms towards the detection pathway. The beaded-hole Diaphragm 502, 602, secondary diaphragm, also flexible and possibly made from derivatives of rubber, features one or more adjacent holes designed to create a proper guide profile for the media, facilitating its orderly passage towards the detection sensor.

[055] The beaded-hole diaphragm 502, 602 with its strategically positioned adjacent holes is crucial. These holes are incorporated to ensure that despite the spatial variance between the hollow ring 505, 605 and the primary flexible diaphragm 501, 601, the fluid or media is guided effectively towards the detection sensor. The adjacent holes in the beaded-hole diaphragm 502, 602 are designed to modulate the flow of leaked fluid, guiding it efficiently towards the leak detection sensor. This design is based on fluid dynamics principles, where the size, shape, and placement of the holes are calculated to control the fluid's velocity and direction accurately. The customization of hole size and placement directly influences the fluid's velocity and direction, creating an optimal path that compensates for the increased space, ensuring precise and efficient leak detection. Such customization ensures that despite variations in space within the assembly or the fluid's properties, the flow is directed in a manner that optimally reaches the sensor, enhancing the detection system's responsiveness and accuracy.

[056] In an embodiment of the present invention as shown in Fig. 6, the area of Inner Chamber Guide Area 503, 603 refines the media's path further, ensuring it is directed accurately towards the sensor mounting block 504, 604, which houses the leak detection sensor. The Leak Detection Sensor, upon receiving the media through the structured pathway designed by the preceding components, detects the leak, signalling equipment failure.

[057] In an exemplary embodiment of the present invention of Fig. 6, the leakage detection assembly is designed with flexibility, allowing for operation even without hollow ring 605. This adaptation highlights the system's capability to effectively manage and direct fluid towards the leak detection sensor through alternative pathways, such as the beaded-hole diaphragm 502, 602 and the inner chamber guide area 503, 603. This design underscores the assembly's adaptability and efficiency in detecting leaks across different operational scenarios, ensuring reliability and precision in leakage detection without reliance on the hollow ring 605 component.

[058] As shown in the embodiments of Fig. 5 and 6 of the present invention, the method for detecting leakage in a pump comprises the positioning of a primary flexible diaphragm 501, 601 and a secondary beaded-hole diaphragm 502, 602 within a diaphragm housing 308. This setup is crucial for initiating the detection process upon the failure of the primary diaphragm 501, 601. The primary diaphragm's failure allows fluid to bypass its seal, signalling the need for immediate action to prevent further system damage. A polymer ring 208, characterized by its resilience to wear and strategically placed between the diaphragms. Disposing a polymer ring 208 axially between the primary and secondary diaphragms to ensure the structural integrity of the secondary diaphragm 502, 602 against operational stresses, plays a pivotal role in maintaining the integrity of the secondary diaphragm 502, 602. This component ensures that the leakage detection process does not compromise the pump's operational stability.

[059] In the detection assembly, an elongated passage 304 is formed that is equipped with an axial slit 302, designed for controlled fluid communication. This feature is instrumental in managing the fluid flow, directing it towards the detection area while protecting the secondary diaphragm 502, 602 from potential damage due to direct fluid impact. A hollow ring 505, 605, made from flexible material, guides the fluid towards a leak detection pathway, ensuring that the fluid's travel is both directed and contained within the assembly's design parameters. The flexible material may be selected from the group consisting of polytetrafluoroethylene (PTFE), polyethylene (PE), and polyvinylidene fluoride (PVDF), SANTOPRENE, RUBBER, derivatives of rubber and plastics chosen for its high resistance to chemical corrosion and physical deformation, thereby enhancing the longevity and reliability of the leakage detection mechanism.

[060] In an exemplary embodiment of the present invention as disclosed in Figures 3, 5 and 6, the method culminates with the fluid's precise redirection towards a sensor mounting block that houses the leak detection sensor. This sensor, activated by the accurately guided fluid, triggers the system's response to the leakage, allowing for immediate corrective action. This comprehensive method underscores the assembly's capability to detect and manage fluid leakage efficiently, highlighting the systematic and integrated approach.

[061] In an exemplary embodiment of the present invention, the leak detection assembly method introduces a customizable fluid path as shown in Fig. 6, that is enabled by the unique arrangement of the beaded-hole diaphragm 502, 602 and the inner chamber guide area 503, 603. The beaded-hole diaphragm 502, 602, equipped with one or more strategically placed holes, offers tailored fluid flow, accommodating diverse types of fluids. This customization facilitates versatile application across different pump models and operational scenarios, ensuring that the leakage detection system can adapt to various requirements. The inner chamber guide area 503, 603 further refines this fluid path, directing the fluid precisely towards the detection sensor, enhancing the system's accuracy and reliability in leakage detection across a broad spectrum of operational conditions.

[062] The beaded-hole diaphragm 502, 602 with one or more holes is designed to create a customizable guide profile for fluids, enhancing the leakage detection assembly's versatility. These strategically positioned holes allow for the adjustment of the fluid flow path based on the type of fluid being pumped and the operational conditions of the pump. This feature ensures that the leakage detection system can be effectively applied across various pump models and scenarios, offering a tailored approach to handling different fluid viscosities and pressures, thereby improving the accuracy and efficiency of leakage detection.

[063] It would be appreciated by a person skilled in the art that although the leakage detection assembly described above is used for detecting leakage of fluid in an AODD pump, the leakage detection assembly is not limited to the same, and may be used to detect leakage of fluid in other pumping devices.

[064] In view of the present disclosure, which describes the present invention, all changes, modifications and, variations within the meaning and range of equivalency are considered within the scope of the invention. It is to be understood that the aspects and embodiment of the disclosure described above may be used in any combination with each other. Several of the aspects and embodiment may be combined together to form a further embodiment of the disclosure.
,CLAIMS:
1. A leakage detection assembly for a pump, comprising:
a diaphragm housing (308) configured to enclose a first diaphragm (204) and a second diaphragm (206) arranged axially, wherein the first diaphragm (204) delineates a portion of the pumping chamber and the second diaphragm (206) is axially spaced from the first diaphragm (204) to form a detection area within the pumping chamber for accumulating fluid indicative of leakage from the first diaphragm (204);
a polymer ring (208), disposed axially between the first and second diaphragms (204, 206), characterized by its resilience to chemical and physical wear, to ensuring the structural integrity of the second diaphragm (206) against potential damage or rupture due to operational stresses;
an elongated passage (304), formed axially between the first diaphragm and the polymer ring (208), incorporating an axial slit (302) designed to facilitate controlled fluid communication from the pumping chamber to the detection area, enabling the detection of leakage while mitigating direct pressure impact on the second diaphragm (206);
a diaphragm cover (212), adapted to be fastened with a pump body (202), such that the first diaphragm (204), polymer ring (208) and second diaphragm (206) are securely arranged between the diaphragm cover (212) and the pump body (202), wherein the diaphragm cover (212) houses a leak detection sensor (306) operatively mounted within the diaphragm cover (212) and in fluid communication with the detection area, the leak detection sensor (306) is configured to sense the presence of fluid indicative of leakage from the first diaphragm (204); and
a guiding groove (210), integrally formed on an inner surface of the housing (308) or the polymer ring (208), in fluid communication with the elongated passage (304), designed to direct the flow of leaked fluid towards the leak detection sensor (306), thereby enhancing the efficiency and sensitivity of leakage detection.

2. The assembly as claimed in claim 1, wherein the diaphragm cover (212) enables the leak detection sensor (306) to be selectively position within the cover to optimize detection of fluid indicative of leakage.

3. The assembly as claimed in claim 1, wherein the polymer ring (208) is composed of a material selected from a group including polytetrafluoroethylene (PTFE), polyethylene (PE), and polyvinylidene fluoride (PVDF), PFA, Santoprene rubber, derivatives of rubber and plastics chosen for its high resistance to chemical corrosion and physical deformation, thereby enhancing the longevity and reliability of the leakage detection mechanism.

4. The assembly as claimed in claim 1, wherein the leak detection sensor (306) is a device selected from the group consisting of optical sensors, conductivity sensors, and capacitive sensors, each configured to provide high sensitivity and specificity in the detection of various types of fluids indicative of leakage.

5. The assembly as claimed in claim 1, wherein the leak detection sensor (306) configured to detect the presence and level of the leaked fluid within the detection area, enhancing the precision and reliability of leakage detection.

6. The assembly as claimed in claim 5, further comprising a power supply unit operatively connected to the leak detection sensor, configured to initiate a predefined response upon detection of leakage, accumulated in an outlet of the elongated passage (304), crossing a threshold value.

7. The assembly as claimed in claim 6, wherein the predefined response including at least automatically shutting down the pump to prevent further leakage.

8. The assembly as claimed in claim 1, wherein the polymer ring (208) includes at least one groove (210) having a U-shaped, V-shaped, or O-shaped profile to provide the passage (304) for the fluid leaked from the pumping chamber, thereby facilitating the directed flow of leaked fluid towards the leak detection sensor (306).

9. The assembly as claimed in claim 1, wherein the pump may be an air-operated double-diaphragm (AODD) pumps and the assembly is capable of being retrofitted into existing pump bodies, allowing for an efficient upgrade of the AODD pumps to include the leakage detection feature without the necessity for significant structural modifications to the pump.

10. A method for detecting leakage in a pump, comprising:
enclosing a first diaphragm (204) and a second diaphragm (206) within a diaphragm housing (308), wherein the first diaphragm delineates a portion of the pumping chamber and the second diaphragm (206) is axially spaced from the first diaphragm (204) to form a detection area within the pumping chamber intended for accumulating fluid indicative of leakage from the first diaphragm (204);
disposing a polymer ring (208) axially between the first and second diaphragms, utilizing its resilience to chemical and physical wear to maintain the structural integrity of the second diaphragm (206) against potential damage or rupture due to operational stresses;
forming an elongated passage (304) axially between the first diaphragm (204) and the polymer ring (208), incorporating an axial slit (302) to enable controlled fluid communication from the pumping chamber to the detection area, facilitating the detection of leakage while reducing the direct pressure impact on the second diaphragm (206);
fastening a diaphragm cover (212) with a pump body (202), ensuring that the first diaphragm (204), the polymer ring (208), and the second diaphragm (206) are securely positioned between the diaphragm cover (212) and the pump body (202), where the diaphragm cover (212) houses a leak detection sensor (306);
configuring the leak detection sensor (306), housed within the diaphragm cover (212), to be in fluid communication with the detection area, enabling it to detect the presence of fluid indicative of leakage from the first diaphragm (204); and
integrating a guiding groove (210) on an inner surface of the diaphragm housing (308) or the polymer ring (208), in fluid communication with the elongated passage (304), to direct leaked fluid towards the leak detection sensor (306), thereby improving the efficiency and sensitivity of the leakage detection process.

11. A leakage detection assembly for a pump, comprising:
a diaphragm housing (308) configured to enclose a primary flexible diaphragm (501, 601) and a secondary beaded-hole diaphragm (502, 602), wherein the primary diaphragm (501, 601) delineates a portion of the pumping chamber and the secondary diaphragm (502, 602) is axially spaced from the primary diaphragm (501, 601), wherein upon failure of the primary diaphragm (501, 601) allows fluid to enter the space between the primary diaphragm (501, 601) and secondary diaphragm (50, 602) to form a detection area within the pumping chamber for accumulating fluid indicative of leakage from the primary diaphragm (501, 601);
a polymer ring (208), disposed axially between the primary and secondary diaphragms, characterized by its resilience to chemical and physical wear, to ensuring the structural integrity of the secondary diaphragm (502, 602) against potential damage or rupture due to operational stresses;
an elongated passage (304), formed axially between the primary diaphragm and the polymer ring (208), incorporating an axial slit (302) designed to facilitate controlled fluid communication from the pumping chamber to the detection area, enabling the detection of leakage while mitigating direct pressure impact on the secondary diaphragm (502, 602);
a hollow ring (505, 605) of flexible material, positioned to guide fluid from the space between the primary and secondary diaphragms towards a leak detection pathway;
an inner chamber guide area (503, 603) introduced post the hollow ring (505, 605), designed to provide a controller guide profile for the fluid, ensuring precise redirection towards a sensor mounting block (504, 604);
a diaphragm cover (212), adapted to be fastened with a pump body (202), such that the primary diaphragm (501, 601), polymer ring (208) and secondary diaphragm (502, 602) are securely arranged between the diaphragm cover (212) and the pump body (202), wherein the diaphragm cover (212) houses a leak detection sensor (306) operatively mounted within the diaphragm cover (212) and in fluid communication with the detection area, the leak detection sensor (306) is configured to sense the presence of fluid indicative of leakage from the primary diaphragm (501, 601); and
a guiding mechanism, including a fluid guiding tube or pipe (503, 603), ensuring efficient and accurate detection of leakage by directing fluid through the hollow ring (505, 605), inner chamber guide (503, 603), towards the leak detection sensor.

12. The assembly as claimed in claim 11, wherein the beaded-hole diaphragm (502, 602) incorporates multiple beaded holes strategically placed to optimize the flow path of media towards the leak detection sensor, thus enhancing the assembly's sensitivity and reliability in leakage detection.

13. The assembly as claimed in claim 11, wherein the media guiding tube or pipe (503, 603) is designed to optimize the flow path of the media towards the leak detection sensor, enhancing the sensitivity and accuracy of leakage detection.

14. The assembly as claimed in claim 11, wherein the inner chamber guide area (503, 603) is engineered to provide a customizable guide profile for fluid, accommodating various operational conditions and fluid types, thereby ensuring the adaptability and effectiveness of the leakage detection across different pump configurations.

15. The assembly as claimed in claim 11, wherein the inner chamber guide area (503, 603) and the one or more adjacent holes in the beaded-hole diaphragm (502, 602) are configured to provide a customizable flow path for different types of fluid, allowing for versatile application across various pump models and operational conditions.

16. The assembly as claimed in claim 11, wherein the beaded-hole diaphragm (502, 602) and inner chamber guide area (503, 603) are configured to directly guide fluid indicative of leakage towards the leak detection sensor (306) without the necessity of the hollow ring (605), thereby ensuring efficient and accurate detection of leakage across a variety of operational scenarios and fluid types, enhancing the assembly's adaptability and utility in diverse pumping environments.

17. A method for detecting leakage in a pump, comprising the steps of:
enclosing a primary flexible diaphragm (501, 601) and a secondary beaded-hole diaphragm (502, 602) within a diaphragm housing (308), where the primary diaphragm delineates a portion of the pumping chamber and, upon its failure, allows fluid to enter the space between the primary and secondary diaphragms to form a detection area;
disposing a polymer ring (208) axially between the primary and secondary diaphragms to ensure the structural integrity of the secondary diaphragm against operational stresses;
forming an elongated passage (304) with an axial slit (302) between the primary diaphragm and the polymer ring to enable controlled fluid communication to the detection area, facilitating leakage detection while protecting the secondary diaphragm;
positioning a hollow ring (505, 605) of flexible material to guide fluid from the space between the primary and secondary diaphragms towards the leak detection pathway;
introducing an inner chamber guide area (503, 603) after the hollow ring (505, 605) to provide a controlled guide profile for the fluid, ensuring precise redirection towards the sensor mounting block (504, 604);
fastening a diaphragm cover (212) to the pump body (202), wherein the diaphragm cover houses a leak detection sensor (306) in fluid communication with the detection area, configured to sense the presence of fluid indicative of primary diaphragm leakage;
utilizing a fluid guiding tube or pipe (503, 603) to direct fluid efficiently through the hollow ring (505, 605) and the inner chamber guide area (503, 603) towards the leak detection sensor, enhancing leakage detection accuracy.

18. The method as claimed in claim 17, wherein multiple beaded holes are strategically incorporated in the secondary beaded-hole diaphragm (502, 602) to optimize the fluid flow path towards the leak detection sensor, thereby enhancing the sensitivity and reliability of the leakage detection process.

19. The method as claimed in claim 17, wherein the fluid guiding tube or pipe (503, 603) is designed to optimize the fluid flow path towards the leak detection sensor, enhancing both the sensitivity and accuracy of leakage detection.

20. The method as claimed in claim 17, wherein the inner chamber guide area (503, 603) is engineered to provide a customizable guide profile for fluid, accommodating various operational conditions and fluid types, ensuring adaptability and effectiveness of the leakage detection across different pump configurations.

21. The method as claimed in claim 17, wherein the inner chamber guide area (503, 603) and one or more adjacent holes in the beaded-hole diaphragm (502, 602) are configured to offer a customizable fluid flow path for diverse fluid types, allowing for versatile application across various pump models and operational scenarios.

22. The method as claimed in claim 17, wherein directing fluid indicative of leakage through a beaded-hole diaphragm (502, 602) and an inner chamber guide area (503, 603) directly towards the leak detection sensor (306) without utilizing a hollow ring (605), thereby ensuring the method's efficacy and adaptability in detecting leakage across different pump models and operational conditions.