DESC:This complete specification seeks priority from provisional application number 202221044269 filed on 2nd day of August, 2022 with title “PRESSURE TESTING TOOL FOR ATTACK PERISCOPE OF SUBMARINE”

FIELD OF DISCLOSURE
[001] The present disclosure generally relates to the field of submarine periscopes and, more specifically focuses on the testing and evaluation of O-Rings used between the hoisting ram and the lower hull bearing.

BACKGROUND OF THE DISCLOSURE
[002] Attack periscopes are vital components of submarines, serving as observation devices that allow the crew to survey the surface while remaining submerged. These periscopes are designed to be robust and reliable, enabling effective surveillance and targeting capabilities for the submarine. One critical element of the attack periscope's functionality is the hoisting ram, which facilitates the extension and retraction of the periscope.
[003] O-Rings are widely used in various industries, including the maritime sector, for their sealing properties. These rings are circular elastomeric gaskets typically made of synthetic rubber or other resilient materials. O-Rings are commonly used to create a reliable seal between two mating surfaces, ensuring a leak-proof and pressure-tight connection. In the context of submarine periscopes, O-Rings play a crucial role in maintaining the watertight integrity of the periscope assembly. Specifically, the O-Rings used between the hoisting ram and the lower hull bearing are responsible for preventing any leakage or flooding of the submarine through this interface. As the hoisting ram penetrates the lower hull, it is essential to ensure that the O-Rings have sufficient pressure holding capacity to withstand the demanding operating conditions.
[004] Currently, the assessment of the pressure holding capacity of O-Rings used in submarine periscopes involves various tools and methods. However, these existing approaches have certain shortcomings and disadvantages that can impact their effectiveness and efficiency. One of the existing approaches is the pressure decay test which involves pressurizing the system with compressed air or another medium and monitoring the pressure over time. While this method provides a quantitative measurement, it is typically performed after the installation of the periscope, which can be time-consuming and costly. Another existing approach is the hydrostatic pressure test which involves subjecting the O-Rings to a higher pressure than their expected operating conditions. The O-Rings are immersed in a liquid-filled chamber, and the pressure is increased gradually. This method provides a quantitative measurement of pressure holding capacity but is generally conducted post-installation. Conventional approaches often involve post-installation testing, which can lead to potential risks if any defects or weaknesses in the O-Rings are identified after the periscope is already in place.
[005] Thus, in light of the above-stated discussion, there exists a need for an improved tool or method that allows for the pre-installation assessment of the pressure holding capacity of O-Rings in submarine periscopes, ensuring their integrity and reducing risks associated with leakage or flooding.

SUMMARY OF THE DISCLOSURE
[006] The following is a summary description of illustrative embodiments of the invention. It is provided as a preface to assist those skilled in the art to more rapidly assimilate the detailed design discussion which ensues and is not intended in any way to limit the scope of the claims which are appended hereto in order to particularly point out the invention.
[007] According to illustrative embodiments, the present disclosure focuses on a pressure testing tool and method for evaluating the pressure holding capacity of O-Rings. The disclosure aims to address the shortcomings and disadvantages and provide the users with a useful or commercial choice.
[008] The present disclosure solves all the above major limitations of the current tools and methods of pressure testing by introducing a pressure testing tool and method to evaluate O-Ring integrity before installation.
[009] An objective of the present disclosure is to develop a pressure testing tool specifically designed for assessing the pressure holding capacity of O-Rings used in submarine periscopes. The tool aims to provide accurate and reliable testing capabilities to ensure the integrity of the periscope system.
[0010] Another objective of the present disclosure is to identify any leakage or defects that could compromise the watertight integrity of the periscope system by evaluating the pressure holding capacity of the O-Rings in advance.
[0011] Another objective of the present disclosure is to enable pre-installation of O-Rings in submarine periscopes. By conducting evaluations before installation, potential issues can be identified and addressed early on, reducing the need for post-installation repairs or replacements.
[0012] Another objective of the present disclosure is to improve efficiency and cost-effectiveness in testing O-Rings for submarine periscopes. By streamlining the evaluation process and allowing for on-site testing, the disclosure minimizes delays and transportation costs associated with traditional post-installation testing methods.
[0013] Yet another objective of the present disclosure is to optimize the testing process within the confined spaces of submarines by addressing the space constraints encountered in submarine periscope systems. The development of a compact pressure testing tool ensures that testing can be performed on-site without requiring extensive disassembly or transportation.
[0014] In light of the above, in one aspect of the present disclosure, a pressure testing tool for evaluating the pressure holding capacity of O-Rings is disclosed herein. The tool comprises a housing made from S355 NL material, a sealing ring made from 20A8 material, pressure monitoring and control mechanisms, and an interface for easy installation and removal of the O-Rings.
[0015] The tool's housing is designed to be secure and durable, while the sealing ring ensures a reliable and leak-proof connection. Pressure monitoring and control mechanisms allow for accurate pressure measurement and adjustment, while the interface facilitates efficient testing procedures.
[0016] In another aspect of the present disclosure, a method for evaluating the pressure holding capacity of O-Rings is disclosed herein.
[0017] The method involves installing the O-Rings onto the pressure testing tool, applying a controlled pressure, monitoring and recording the pressure, identifying any leaks or deviations, and visual inspection of the O-Rings before and after the pressure testing.
[0018] These and other advantages will be apparent from the present application of the embodiments described herein.
[0019] The preceding is a simplified summary to provide an understanding of some embodiments of the present invention. This summary is neither an extensive nor exhaustive overview of the present invention and its various embodiments. The summary presents selected concepts of the embodiments of the present invention in a simplified form as an introduction to the more detailed description presented below. As will be appreciated, other embodiments of the present invention are possible utilizing, alone or in combination, one or more of the features set forth above or described in detail below.
[0020] These elements, together with the other aspects of the present disclosure and various features are pointed out with particularity in the claims annexed hereto and form a part of the present disclosure. For a better understanding of the present disclosure, its operating advantages, and the specified object attained by its uses, reference should be made to the accompanying drawings and descriptive matter in which there are illustrated exemplary embodiments of the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS
[0021] To describe the technical solutions in the embodiments of the present disclosure or in the prior art more clearly, the following briefly describes the accompanying drawings required for describing the embodiments or the prior art. Apparently, the accompanying drawings in the following description merely show some embodiments of the present disclosure, and a person of ordinary skill in the art can derive other implementations from these accompanying drawings without creative efforts. All of the embodiments or the implementations shall fall within the protection scope of the present disclosure.
[0022] The advantages and features of the present disclosure will become better understood with reference to the following detailed description taken in conjunction with the accompanying drawing, in which:
[0023] FIG. 1 illustrates a flowchart of a non limiting method for evaluating the pressure holding capacity of O-Rings before installation on-board a submarine, in accordance with an exemplary embodiment of the present disclosure;
[0024] Like reference, numerals refer to like parts throughout the description of several views of the drawing.
[0025] The toolmethod for evaluating the pressure holding capacity of O-Rings before installation on-board a submarine is illustrated in the accompanying drawings, which like reference letters indicate corresponding parts in the various figures. It should be noted that the accompanying figure is intended to present illustrations of exemplary embodiments of the present disclosure. This figure is not intended to limit the scope of the present disclosure. It should also be noted that the accompanying figure is not necessarily drawn to scale.

DETAILED DESCRIPTION OF THE DISCLOSURE
[0026] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure.
[0027] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It may be apparent to one skilled in the art that embodiments of the present disclosure may be practiced without some of these specific details.
[0028] Various terms as used herein are shown below. To the extent a term is used, it should be given the broadest definition persons in the pertinent art have given that term as reflected in printed publications and issued patents at the time of filing.
[0029] The terms “a” and “an” herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced items.
[0030] The terms “having”, “comprising”, “including”, and variations thereof signify the presence of a component.
[0031] Referring now to FIG. 1 to describe various exemplary embodiments of the present disclosure. FIG. 1 illustrates a flowchart of a non limiting method for evaluating the pressure holding capacity of O-Rings before installation on-board a submarine 100, in accordance with an exemplary embodiment of the present disclosure.
[0032] The method 100 may comprise the steps of installing the O-Rings onto the pressure testing tool 102, applying controlled pressure to the O-Rings using the pressure testing tool 104, monitoring and recording the pressure to determine the pressure holding capacity of the O-Rings 106, identifying any leaks or deviations from the desired pressure range 108, and performing a post-test inspection on the O-Rings to detect any signs of damage 110.
[0033] The method 100 begins by installing the O-Rings onto the pressure testing tool 102, ensuring they are positioned according to the periscope assembly configuration. This step involves aligning and securing the O-Rings within the interface of the tool, preparing them for the subsequent pressure evaluation process by subjecting the O-Rings to a predetermined temperature and humidity conditions to simulate operational environments. This conditioning of the O-Rings replicates the environmental conditions they will experience during their operational lifespan.
[0034] After installation, a controlled pressure is applied to the O-Rings using the pressure testing tool 104.The pressure is gradually increased to the desired test level and may include a series of pressure cycles to simulate real-world operating conditions. The controlled application of pressure allows for accurate and controlled assessment of the O-Rings' pressure holding capacity.
[0035] The method 100 involves monitoring and recording the pressure to determine the pressure holding capacity of the O-Rings during the application of pressure 106.Pressure measurements are obtained using pressure gauges or transducers, ensuring accurate and reliable data. The pressure values are recorded at regular intervals or continuously throughout the testing process.
[0036] The method 100 includes identifying any leaks or deviations from the desired pressure range 108. This step involves visual inspection and analysis of pressure data to detect signs of leakage or pressure drop. The presence of leaks or deviations indicates potential weaknesses in the O-Rings sealing capabilities, highlighting areas that require further attention or corrective action.Toidentify any leaks or deviations in the O-Rings, visual inspection of the O-Rings may be done or leak detection techniques, such as fluid seepage or pressure drop may be used. Further, post-test inspection on the O-Rings may be performed 110 wherein the O-Rings are examined for any damage or deformation resulting from testing.
[0037] In an embodiment, the present disclosure further discloses a pressure testing tool for evaluating the pressure holding capacity of O-Rings, comprising a housing made from S355 NL material, a sealing ring made from 20A8 material, a pressure monitoring and control mechanisms, and an interface for easy installation and removal of the O-Rings.
[0038] The housing of the pressure testing tool is constructed from S355 NL material, which offers robustness and durability. The material ensures that the housing can withstand the testing conditions and effectively enclose the O-Rings during the evaluation process. The choice of S355 NL material enhances the tool's structural integrity and longevity, making it suitable for use in submarine periscope applications.
[0039] The pressure testing tool incorporates a sealing ring made from 20A8 material. This specific material is chosen for its ability to establish a dependable and leak-proof connection between the tool and the O-Rings being tested. The sealing ring ensures that the pressure applied during the testing process remains confined to the O-Rings, preventing any unintended leaks or pressure loss. Its design and composition contribute to the reliability and accuracy of the pressure testing procedure.
[0040] The pressure testing tool is equipped with pressure monitoring and control mechanisms. These mechanisms enable the measurement and adjustment of the applied pressure during the testing process. Precise pressure monitoring ensures accurate assessment of the pressure holding capacity of the O-Rings. Additionally, the ability to control the applied pressure allows for consistent and controlled testing conditions, ensuring reliable and reproducible results.
[0041] The pressure testing tool incorporates an interface that simplifies the installation and removal of the O-Rings. This interface is designed to be user-friendly, allowing for efficient and convenient testing procedures. It ensures that the O-Rings can be securely and properly positioned within the tool, enabling accurate evaluation of their pressure holding capacity. The interface's intuitive design minimizes errors and streamlines the testing process, enhancing overall efficiency.
[0042] While the invention has been described in connection with what is presently considered to be the most practical and various embodiments, it will be understood that the invention is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the scope of the appended claims.
[0043] A person of ordinary skill in the art may be aware that, in combination with the examples described in the embodiments disclosed in this specification, units and algorithm steps may be implemented by electronic hardware, computer software, or a combination thereof.
[0044] The foregoing descriptions of specific embodiments of the present disclosure have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the present disclosure to the precise forms disclosed, and many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described to best explain the principles of the present disclosure and its practical application, and to thereby enable others skilled in the art to best utilize the present disclosure and various embodiments with various modifications as are suited to the particular use contemplated. It is understood that various omissions and substitutions of equivalents are contemplated as circumstances may suggest or render expedient, but such omissions and substitutions are intended to cover the application or implementation without departing from the scope of the present disclosure.
[0045] Disjunctive language such as the phrase “at least one of X, Y, Z,” unless specifically stated otherwise, is otherwise understood with the context as used in general to present that an item, term, etc., may be either X, Y, or Z, or any combination thereof (e.g., X, Y, and/or Z). Thus, such disjunctive language is not generally intended to, and should not, imply that certain embodiments require at least one of X, at least one of Y, or at least one of Z to each be present.
[0046] In a case that no conflict occurs, the embodiments in the present disclosure and the features in the embodiments may be mutually combined. The foregoing descriptions are merely specific implementations of the present disclosure, but are not intended to limit the protection scope of the present disclosure. Any variation or replacement readily figured out by a person skilled in the art within the technical scope disclosed in the present disclosure shall fall within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
,CLAIMS:1. A pressure testing tool for evaluating the pressure holding capacity of O-Rings, the tool comprising:
a housing made from S355 NL material;
a sealing ring made from 20A8 material;
a pressure monitoring and control mechanisms; and
an interface for installation and removal of the O-Rings.

2. The tool as claimed in claim 1, further comprises:
a pressure relief valve to safely release excess pressure;
an adjustable clamping mechanism within the housing to exert controlled pressure on the O-Rings during the testing process; and
an alignment guide or indexing feature for proper positioning and alignment of the O-Rings.

3. The tool as claimed in claim 1, wherein the housing is designed with a threaded connection for secure fastening of the sealing ring.

4. The tool as claimed in claim 1, wherein the pressure monitoring and control mechanisms include a pressure gauge for accurate measurement of the applied pressure during testing.

5. The tool as claimed in claim 1, wherein the interface for easy installation and removal of the O-Rings includes quick-release connectors or a sliding mechanism.

6. A method for evaluating the pressure holding capacity of O-Rings before installation on-board a submarine(100),the method comprising:
installing the O-Rings onto the pressure testing tool as per the periscope assembly configuration;
applying controlled pressure to the O-Rings using the pressure testing tool;
monitoring and recording the pressure to determine the pressure holding capacity of the O-Rings;
identifying any leaks or deviations from the desired pressure range; and
performing a post-test inspection on the O-Rings to detect any signs of damage.

7. The method (100) as claimed in claim 6, wherein the step of installing the O-Rings onto the pressure testing toolincludes conditioning the O-Rings by subjecting them to predetermined temperature and humidity conditions to simulate operational environments.

8. The method (100) as claimed in claim 6, wherein the step of applying a controlled pressure to the O-Rings includes a series of pressure cycles to the O-Rings to simulate real-world operating conditions.

9. The method (100) as claimed in claim 6, wherein the step of monitoring and recording the pressure includes using a digital pressure gauge or transducer to obtain accurate and precise pressure measurements during the testing process.

10. The method (100) as claimed in claim 6, wherein the step of identifying any leaks or deviations from the desired pressure range includes visually inspecting the O-Rings or using leak detection techniques such as fluid seepage or pressure drop.