Description:AN APPARATUS FOR HOLDING VORTEX PLATES INSIDE A STEAM GENERATOR

FIELD OF THE INVENTION
[0001] The present subject matter described herein relates to a vortex assembly in steam generators. More specifically, the present invention relates to an apparatus for assembling and welding vortex plates inside the steam generator to reduce operator fatigue and also result in reduced cycle time.
BACKGROUND OF THE INVENTION
[0002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[0003] In a 700 MW steam generator, the assembling of the internals is done in a clean room. In these assemblies, the most critical works include the assembling of grid and tubes, tube to tube sheet welding, tube expansion followed by assembly of vortex plates inside the steam generators.
[0004] Further, vortex plates are the major components in the 700 MWe steam generator. The prime functionality of vortex plates is to break the swirling action/vortex of steam+water mixture formed above the tube bundle assembly allowing the uniform flow of fluid into multiple steam separators.
[0005] FIG. 1a-1j illustrates vortex plates (101a, 101b, 101c) welding over the SA24U shell (102) is one of the critical activity where the joints are welded near a‘U’ tube bundle (103). This assembly includes the welding of the vortex plate (101a) to the vortex plates (101b, 101c) as well as the plate with the shell (102). All the 12 joints are welded inside the shell (102) at the final stage of clean room (106) activities.
[0006] The criticality of the assembly is evident from the proximity of assembly to the tube bundle (103) and also due to space constraints during the welding. For assembly, the plates (101a, 101b, 101c) weighing approximately half a ton to be carried out manually inside the shell (102).
[0007] FIG. 1d, Material handling of the plates (101a, 101b, 101c) inside the shell (102) is highly unsafe for the working persons as well as welding requires utmost care and attention as the weld spatters /arc strikes can damage the tube bundle (103) because of its proximity to the tube bundle (103). Further grinding the excess weld on the joints of the plates (101a, 101b, 101c) is also done near the tube bundle (103) (as provided in FIG. 2) Any damage to tube surface can leads to serious operational problems during the service.
[0008] All the 12 joints fit-up, dimensional report, welding, grinding, non destructive evaluation and final dimensional report are done by frequently rotating the job. Since the job is rotated, all other parallel activities such as tube expansion, expansion dimensional report, ball test and cleaning are delayed. As the activity falls on the critical path in cleanroom schedule, this has to be completed either by delaying or stopping the other activities which affect the job cycle time.
[0009] Due to the above reasons, the assembly of vortex plates is time consuming and other alternative processes are not available.
[0010] It is thus required to provide a solution to the above problem.
OBJECTS OF THE DISCLOSURE
[0011] It is therefore the object of the present disclosure to overcome the aforementioned and other drawbacks in prior arts.
[0012] It is a primary object of the present disclosure to reduce operator fatigue during handling of vortex plates while fit up.
[0013] It is another object of the present disclosure to avoid grinding process near tube bundle.
[0014] It is another object of the present disclosure is to reduce the rework of material due to welding defect while welding inside the shell.
[0015] It is another object of the present disclosure is to eliminate air pollution due to welding process inside the clean room.
[0016] It is another object of the present disclosure to reduce crane engagement during setting and fit up process.
[0017] It is another object of the present disclosure to reduce cycle time for vortex plate welding process.
[0018] It is another object of the present disclosure to increase the productivity of vortex plate fit up process.
[0019] These and other objects and advantages of the present subject matter will be apparent to a person skilled in the art after consideration of the following detailed description taken into consideration with accompanying drawings in which preferred embodiments of the present subject matter are illustrated.
SUMMARY OF THE INVENTION
[0020] One or more drawbacks of conventional systems and process are overcome, and additional advantages are provided through the apparatus/composition and a method as claimed in the present disclosure. Additional features and advantages are realized through the technicalities of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered to be part of the claimed disclosure.
[0021] Solution to one or more drawbacks of existing technology and additional advantages are provided through the present disclosure. Additional features and advantages are realized through the technicalities of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered to be a part of the claimed disclosure.
[0022] The present disclosure offers a solution in the form of an apparatus for holding vortex plates to be welded in a steam generator. The apparatus includes of an outer frame having a plurality of sides defining a rectilinear shape, wherein a side support rollers are provided on a first side, a second side and a fourth side, an electric rotator provided on a first side of the outer frame, a hollow cylindrical ring rotatable on the side support rollers using the electric rotator, wherein a plurality of clamping units are provided at a plurality of locations on the hollow cylindrical ring thereby forming equal quadrants with respect to the center of the cylindrical ring.
[0023] In an aspect of the invention, the clamping unit comprises a first clamping surface and a second clamping surface, wherein the first clamping surface has a first triangular plate connected to a first clamping pad, wherein the second clamping surface has a second triangular plate connected to a second clamping pad.
[0024] In a further aspect of the invention, one end of the first and second triangular plates and one end of the first and the second clamping surfaces are connected to the cylindrical ring.
[0025] In an aspect of the invention, the first clamping surface and the second clamping surface lies in different quadrants.
[0026] In an aspect of the invention, a plurality of clamping bolts are provided on the clamping pads.
[0027] In an aspect of the invention, a space is formed between the first clamping surface and the second clamping surface.
[0028] In an aspect of the invention, a vortex plate is configured to be located inside the space formed between the first clamping surface and the second clamping surface.
[0029] In an aspect of the invention, a plurality of support legs are provided on edges of the outer frame.
[0030] The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.
[0031] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.
[0032] It is to be understood that the aspects and embodiments of the disclosure described above may be used in any combination with each other. Several of the aspects and embodiments may be combined to form a further embodiment of the disclosure.
[0033] The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
[0034] The illustrated embodiments of the subject matter will be best understood by reference to the drawings, wherein like parts are designated by like numerals throughout. The following description is intended only by way of example, and simply illustrates certain selected embodiments of devices, systems, and processes that are consistent with the subject matter as claimed herein, wherein:-
[0035] It is to be noted, however, that the appended drawings illustrate only typical embodiments of the present subject matter and are therefore not to be considered for limiting of its scope, for the present disclosure may admit to other equally effective embodiments. The detailed description is described with reference to the accompanying figures. In the figures, a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the figures to reference like features and components. Some embodiments of system or methods or structure in accordance with embodiments of the present subject matter are now described, by way of example, and with reference to the accompanying figures, in which:
[0036] Fig. 1a illustrates a steam generator component vortex plates according to the prior art;
[0037] Fig. 1b illustrates the steam generator component shell with a tube bundle, in accordance with the prior art;
[0038] Fig. 1c illustrates a vortex plate top portion welding process near the tube bundle at inside the shell, in accordance with the prior art;
[0039] Fig. 1d illustrates vortex plate bottom portion welding process near the tube bundle at inside the shell, in accordance with the prior art;
[0040] Fig. 1e illustrates the right and left side vortex plates setting process using wooden supports, in accordance with the prior art;
[0041] Fig. 1f illustrates the right and left side vortex plates welding process inside the steam generator, in accordance with the prior art;
[0042] Fig. 1j illustrates manual surface grinding process on welded surface near the tube bundle, in accordance with the prior art;
[0043] Fig. 2 illustrates vortex plate welded surface grinding process near the tube bundle at inside the shell, in accordance with the prior art;
[0044] Fig. 3a illustrates various parts of an apparatus in accordance with present invention;
[0045] Fig. 3b illustrates a hollow cylindrical ring in accordance with present invention;
[0046] Fig. 4a illustrates an outer frame in accordance with present invention;
[0047] Fig. 4b illustrates a side view of the outer frame in accordance with present invention;
[0048] Fig. 5a illustrates an apparatus in accordance with present invention;
[0049] Fig. 5b illustrates the side view of the apparatus accordance with present invention;
[0050] Fig. 6a, 6b and 6c illustrates vortex plate set on the apparatus in accordance with present invention;
[0051] Fig. 7 illustrates the welding process on vortex plates using the apparatus in accordance with present invention;
[0052] Fig. 8 illustrates welded vortex plates in accordance with present invention;
[0053] A person skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.
[0054] The figures depict embodiments of the disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAIL DESCRIPTION OF INVENTION WITH REFERENCE TO THE ACCOMPANYING DRAWINGS OF THE PREFERRED EMBODIMENTS:
[0055] While the embodiments of the disclosure are subject to various modifications and alternative forms, a specific embodiment thereof has been shown by way of example in the figures and will be described below. It should be understood, however, that it is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternatives falling within the scope of the disclosure.
[0056] The terms “comprises”, “comprising”, or any other variations thereof used in the disclosure, are intended to cover a non-exclusive inclusion, such that a device, system, assembly that comprises a list of components does not include only those components but may include other components not expressly listed or inherent to such system, or assembly, or device. In other words, one or more elements in a system or device proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or device.
[0057] The present invention is related to an apparatus for holding vortex plates in a steam generator to be welded. The apparatus aids in fit up and assembly of vortex plates with minimum operator fatigue along with reduced cycle time. The apparatus is applicable for fit up and assembly of vortex plates for various thickness and orientations.
[0058] Referring to Fig. 3a, it shows a hollow cylindrical ring (301), a triangular shaped plate (302), a clamping pad (303) with a plurality of fastening holes (304) and a clamping bolt (305).
[0059] Referring to Fig. 3b, it shows a hollow cylinder ring (301) for the purpose of holding the vortex plates (101a, 101b, 101c) at four equal quadrants. The hollow cylinder ring (301) has clamping units (306a, 306b, 306c, 306d) that are provided at a plurality of locations on the hollow cylindrical ring (301). The clamping units (306a, 306b, 306c, 306d) form equal quadrants with respect to the center of the cylindrical ring (301).
[0060] The clamping unit (306a, 306b, 306c, 306d) comprises of a first clamping surface (307a) and a second clamping surface (307b). The first clamping surface (307a) includes a first triangular plate (302a) connected or welded to an inner periphery of the hollow cylindrical ring (301) and a first clamping pad (303a) that is connected to the first triangular plate (302a) and further welded from one end to the hollow cylindrical ring (301).
[0061] The second clamping surface (307b) includes a second triangular plate (302b) connected or welded to an inner periphery of the hollow cylindrical ring (301) and a second clamping pad (303b) that is connected to the second triangular plate (302b) and further welded from one end to the hollow cylindrical ring (301).
[0062] The clamping pads (303a, 303b) has the plurality of fastening holes (304) to receive fastening bolts (305a, 305b, 305c, 305d). Also, a space (308) is formed in between the first clamping surface (307a) and the second clamping surface (307b). The space (308) is configured to incorporate the vortex plate (101a, 101b, 101c).
[0063] Referring to Fig. 4a and Fig. 4b, an outer frame (401) is illustrated. The outer frame (401) defines a rectilinear shape and thereby comprises of multiple sides (402a, 402b, 402c, 402d). On three of the four sides (402a, 402b, 402d), side support rollers (403a, 403b, 403c, 403d,403e, 403f) are provided. One side support roller (403c, 403 f) is provided on the second side (402b), another side support roller (403d, 403e) is provided on the fourth side (402d) and two side support rollers (403a, 403b) are provided on the first side (402a) of the outer frame (401). Also, support legs (404a, 404b) are welded with the outer frame (401) to give support to the overall outer frame (401).
[0064] Referring Fig. 5a and Fig. 5b, the assembled apparatus (500) is illustrated. The apparatus (500) comprise of the outer frame (401) that has multiple sides (402a, 402b, 402c, 402d) and on one side (402a) an electrical rotator (501) is provided. The hollow cylindrical ring (301) is connected to the outer frame (401) with the support of the side support rollers (403a, 403b, 403c, 403d) and the electrical rotator (501). The hollow cylindrical ring (301) located on the electrical rotator (501) is used for rotating purpose during welding process in required position.
[0065] The hollow cylindrical ring (301) has clamping units (306a, 306b, 306c, 306d) provided at a plurality of locations on the hollow cylindrical ring (301) thereby forming equal quadrants with respect to the center of the cylindrical ring (301).
[0066] Referring Fig. 5a anf Fig. 3b, The clamping unit (306a, 306b, 306c, 306d) comprises of the first clamping surface (307a) and the second clamping surface (307b). The first clamping surface (307a) has the first triangular plate (302a) connected to the first clamping pad (303a) and the second clamping surface (307b) has the second triangular plate (302b) connected to the second clamping pad (303b). Also, the first clamping surface (307a) and the second clamping (307a) surface lies in different quadrants.
[0067] The clamping pads (303a, 303b) has fastening holes (304) to incorporate fastening bolts (305a, 305b, 305c, 305d). The hollow cylindrical ring (301) located on electrical rotator (501), rotates the hollow cylindrical ring (301) for rotating purpose in a required position.
[0068] Further before welding, the vortex plates (101a, 101b, 101c) are set on the hollow cylindrical ring (301) by using the clamping units (306a, 306b, 306c, 306d). After setting, welding is done on the vortex plates (101a, 101b, 101c). The electrical rotator (501) rotates the vortex plates (101a, 101b, 101c) in a desired position for the purpose of welding. Also, the outer frame (401) and the side support rollers (403a, 403b, 403c, 403d) are ensured for safety of the hollow cylindrical ring (301) while rotating.
WORKING OF INVENTION
[0069] In a first step referring Fig. 6a, a vortex plate (101a) is loaded on the apparatus (500) using the clamping units (306a, 306c). Using the clamping bolts (305a, 305b, 305c, 305d) provided on the first and the second clamping pads (303a, 303b), the vortex plate (101a) is rigidly tightened in a required position.
[0070] In a second step and the third step referring Fig. 6b and Fig. 6c, the vortex plate (101a, 101b) is set in a required position by using the clamping unit (306b, 306d). Using the clamping bolts (305a, 305b, 305c, 305d) provided on the clamping pads (303a, 303b), the vortex plate (101b, 101d) is rigidly tightened in a required position as provided in the first step.
[0071] In a third step referring Fig. 7, welding is done on inner joint of vortex plates (101a, 101b, 101c) by using the apparatus (500). The hollow cylindrical ring (301) easily rotates with the help of electrical rotator (501) for a desired position while performing the welding process.
[0072] In a fourth step referring Fig. 8, after welding, the inner joint welding is completed and the (101a, 101b, 101c) are unloaded from the apparatus (500) with the help of a crane.
TECHNICAL ADVANTAGES
[0073] With the help of the solution as proposed herein in the context of the present disclosure, the human activities are reduced while vortex plate setting and while performing welding process.
[0074] Unsafe material handling and manual activities while vortex plate setting are eliminated, also Shielded metal arc welding (SMAW) is reduced inside the steam generator and clean room, therefore the operator fatigue and pollution is reduced.
[0075] Using the apparatus, the re work grinding process near the tube bundle assembly is eliminated.
[0076] Also, total cycle time is reduced and productivity is increased.
[0077] It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation, no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to disclosures containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. Also, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general, such construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances, where a convention analogous to “at least one of A, B, or C, etc.” is used, in general, such construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B.”
[0078] It will be further appreciated that functions or structures of a plurality of components or steps may be combined into a single component or step, or the functions or structures of one-step or component may be split among plural steps or components. The present disclosure contemplates all of these combinations. Unless stated otherwise, dimensions and geometries of the various structures depicted herein are not intended to be restrictive of the disclosure, and other dimensions or geometries are possible. Also, while a feature of the present disclosure may have been described in the context of only one of the illustrated embodiments, such feature may be combined with one or more other features of other embodiments, for any given application. It will also be appreciated from the above that the fabrication of the unique structures herein and the operation thereof also constitute methods in accordance with the present disclosure. The present disclosure also encompasses intermediate and end products resulting from the practice of the methods herein. The use of “comprising” or “including” also contemplates embodiments that “consist essentially of” or “consist of” the recited feature.
[0079] Each of the appended claims defines a separate invention, which for infringement purposes is recognized as including equivalents to the various elements or limitations specified in the claims. Depending on the context, all references below to the "invention" may in some cases refer to certain specific embodiments only. In other cases, it will be recognized that references to the "invention" will refer to subject matter recited in one or more, but not necessarily all, of the claims.
[0080] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all groups used in the appended claims.
[0081] It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particulars claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogues to “at least one of A, B and C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to “at least one of A, B, or C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B”.
[0082] The above description does not provide specific details of manufacture or design of the various components. Those of skill in the art are familiar with such details, and unless departures from those techniques are set out, techniques, known, related art or later developed designs and materials should be employed. Those in the art are capable of choosing suitable manufacturing and design details.
[0083] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. It will be appreciated that several of the above-disclosed and other features and functions, or alternatives thereof, may be combined into other systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations, or improvements therein may subsequently be made by those skilled in the art without departing from the scope of the present disclosure as encompassed by the following claims.
[0084] The claims, as originally presented and as they may be amended, encompass variations, alternatives, modifications, improvements, equivalents, and substantial equivalents of the embodiments and teachings disclosed herein, including those that are presently unforeseen or unappreciated, and that, for example, may arise from applicants/patentees and others.
[0085] While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.
, Claims:WE CLAIM
1. An apparatus (500) for holding vortex plates (101a, 101b, 101c) to be welded in a steam generator, the apparatus (500) comprising of:
an outer frame (401) having a plurality of sides (402a, 402b, 402c, 402d) defining a rectilinear shape, wherein side support roller(s) (403a, 403b, 403c, 403d, 404e, 404f ) are provided on a first side (402a), a second side (402b) and a fourth side (402d);
an electric rotator (501) provided on a first side (402a) of the outer frame (401); and
a hollow cylindrical ring (301) rotatable on the side support rollers (403a, 403b, 403c, 403d, 404e, 404f) using the electric rotator (501),
wherein a plurality of clamping units (306a, 306b, 306c, 306d) are provided at a plurality of locations on the hollow cylindrical ring (301) thereby forming equal quadrants with respect to the center of the cylindrical ring (301).
2. The apparatus (500) as claimed in claim 1, wherein the clamping unit (306a, 306b, 306c, 306d) comprises:
a first clamping surface (307a) and a second clamping surface (307b),
wherein the first clamping surface (307a) has a first triangular plate (302a) connected to a first clamping pad (303a),
wherein the second clamping surface (307b) has a second triangular plate (302b) connected to a second clamping pad (303b).
3. The apparatus (500) as claimed in claim 2, wherein one end of the first and second triangular plates (302a, 302b) and one end of the first and the second clamping surfaces (303a, 303b) are connected to the cylindrical ring.
4. The apparatus (500) as claimed in claim 2-3, wherein the first clamping surface (307a) and the second clamping surface (307b) lies in different quadrants.
5. The apparatus (500) as claimed in claim 2-4, wherein a plurality of clamping bolts (305a, 305b, 305c, 305d) are provided on the clamping pads (303a, 303b).
6. The apparatus (500) as claimed in claim 2-5, wherein a space (308) is formed between the first clamping surface (307a) and the second clamping surface (307b).
7. The apparatus (500) as claimed in claim 1, wherein a vortex plate (101a, 101b, 101c) is configured to be located inside the space (308) formed between the first clamping surface (307a) and the second clamping surface (307b).
8. The apparatus (500) as claimed in claim 1, wherein a plurality of support legs (404a, 404b) are provided on edges of the outer frame (401).