Straight cylinder type clamp and system for sealing ring performance analysis

Abstract

The utility model relates to the technical field of sealing equipment performance evaluation tools, in particular to a straight cylinder type clamp and system for sealing ring performance analysis. The straight cylinder type clamp for analyzing the performance of the sealing ring comprises a first plate body, a second plate body, a third plate body and a fastener. A first wall surface, a vent hole and a first assembly hole are formed in the first plate body; the second plate body is detachably connected with the first plate body, and a second wall surface is formed on the second plate body; a third wall surface, a detection chamber and a second assembly hole are formed in the third plate body; and the fastener is matched with the first assembly hole and the second assembly hole in sequence. According to the straight cylinder type clamp and system for performance analysis of the sealing ring, the sealing ring to be tested and the clamp are convenient to assemble and disassemble, the manufacturing cost is reduced, and the simulation efficiency is improved; the simulation test of the assembly of the sealing ring in a specified environment is realized; damage caused by uneven pressure on the to-be-tested sealing ring is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing equipment performance evaluation tools, in particular to a straight-cylinder clamp and a system for sealing ring performance analysis. Background Art

[0002] With the advancement of science and technology, the development of hydrogen energy and hydrogen fuel cell vehicles has received increasing attention. Sealing components are an essential component of hydrogen energy products. The sealing performance of sealing components directly affects whether hydrogen energy products can maintain the required internal pressure and the possibility of hydrogen leakage.

[0003] In the relevant technical field, sealing components typically use sealing rings, which are placed between two workpieces that need to be sealed. For example, an annular groove is machined on the surface of one workpiece, and the sealing ring is placed inside the annular groove. During assembly, the other workpiece is placed on the first workpiece and the two workpieces are pressed against each other. The sealing ring inside the annular groove elastically deforms under the action of the squeezing force, causing its upper and lower surfaces to tightly fit the sealing surfaces of the two workpieces, thus achieving a seal between the two workpieces.

[0004] However, the same sealing ring will have a significant impact on its sealing performance under different pressure environments, and generally a simulation test is required to place the sealing ring in a specified pressure environment to test the sealing performance of the sealing ring. For example, the existing simulation test is generally to assemble the sealing ring directly between the workpieces that need to be sealed in a high-pressure hydrogen environment, but it has the following defects: the workpieces that need to be sealed need to be made in advance, and they need to be assembled in a high-pressure hydrogen environment, which has the problems of high cost, difficult assembly, low simulation efficiency, and the sealing ring is easily damaged during the assembly process and the test process. Therefore, there is an urgent need to produce a fixture specifically for simulating the sealing performance test of the sealing ring, which is used to install the sealing ring and conduct simulation tests to detect the sealing performance of the sealing ring. Utility Model Content

[0005] The utility model provides a straight-cylinder fixture and system for analyzing the performance of sealing rings, which are used to solve the problems in the prior art of requiring pre-fabrication of workpieces to be sealed and the need to assemble them in a high-pressure hydrogen environment, resulting in high cost, difficult assembly, low simulation efficiency, and the risk of damage to the sealing ring during the assembly and testing processes.

[0006] The utility model provides a straight-cylinder fixture for analyzing the performance of a sealing ring, comprising:

[0007] A first plate body is formed with a first wall surface, a vent hole and a first assembly hole, wherein one end of the vent hole passes through the first plate body to communicate with the environment, and the other end passes through the first wall surface;

[0008] a second plate body, detachably connected to the first plate body, and having a second wall surface formed thereon;

[0009] The third plate is formed with a third wall, a detection chamber and a second assembly hole, the second assembly hole is arranged opposite to the first assembly hole, and the detection chamber is used to place a test paper to detect the sealing performance of the sealing ring to be tested;

[0010] a fastener, engaging with the first assembly hole and the second assembly hole in sequence, so as to detachably connect the third plate to the first plate;

[0011] When the first plate, the second plate and the third plate are assembled and connected, the first wall, the second wall and the third wall form a mounting groove for accommodating the sealing ring to be tested, and the detection chamber is located on the side of the mounting groove away from the first wall.

[0012] According to the straight-cylinder fixture for sealing ring performance analysis provided by the present invention, the fastener includes: a first bolt connector and a nut, the first bolt connector passes through the first assembly hole and the second assembly hole in sequence, and the nut is cooperatively connected with the first bolt connector.

[0013] According to the straight-cylinder fixture for sealing ring performance analysis provided by the present invention, a guide groove is formed on the first wall surface, one end of the guide groove extends in a direction away from the third wall surface, and one end of the guide groove is connected to the vent hole, and the other end of the guide groove is connected to the mounting groove, so that the vent hole is staggered and connected to the sealing ring to be tested.

[0014] According to the straight-cylinder fixture for sealing ring performance analysis provided by the present invention, a drainage portion is formed on the second wall surface and close to the guide groove, one end of the drainage portion extends toward one end of the guide groove, and the other end of the drainage portion extends toward the direction of the third wall surface.

[0015] According to the straight-cylinder fixture for analyzing the performance of a sealing ring provided by the present invention, a first positioning groove is provided on one side of the first plate body close to the second plate body, and a first positioning boss is provided on one side of the second plate body close to the first plate body, and the first positioning boss can be embedded in the first positioning groove to position the second plate body and the first plate body; or,

[0016] A second positioning boss is provided on one side of the first plate body close to the second plate body, and a second positioning groove is provided on one side of the second plate body close to the first plate body. The second positioning boss can be embedded in the second positioning groove to position the second plate body and the first plate body.

[0017] According to the straight-cylinder fixture for sealing ring performance analysis provided by the present invention, the third plate body is formed with a stepped groove, and the stepped groove forms a accommodating chamber and the detection chamber in sequence. The first plate body is at least partially placed in the accommodating chamber and is formed with a first stepped surface to be clamped on the stepped groove, so that the second assembly hole is opposite to the first assembly hole, the second wall surface is a second stepped surface and the second plate body is placed in the accommodating chamber.

[0018] According to the straight-cylinder fixture for sealing ring performance analysis provided by the present invention, a transition portion connecting adjacent end faces is formed on the inner wall of the accommodating chamber and at one end away from the detection chamber to gradually squeeze the sealing ring to be tested.

[0019] According to the straight-cylinder fixture for sealing ring performance analysis provided by the present invention, the first wall surface is a horizontal surface close to the second plate body, and the third wall surface is a vertical surface inside the accommodating chamber.

[0020] According to the straight-cylinder fixture for sealing ring performance analysis provided by the utility model, a disassembly hole is provided on the first plate body. When the first plate body, the second plate body and the third plate body are combined and connected, after the fastener is removed, the disassembly hole is used to insert a locking piece, and the locking is used to remove and separate the third plate body from the first plate body.

[0021] According to the straight-cylinder fixture for sealing ring performance analysis provided by the present invention, it also includes: a second bolt connecting member, the first plate body is formed with a through hole, the second plate body is formed with a threaded hole, the second bolt connecting member passes through the through hole and is connected to the threaded hole, so that the second plate body and the first plate body can be detachably connected.

[0022] The utility model also provides a sealing ring performance analysis test system, comprising: a straight-cylinder fixture for sealing ring performance analysis in an embodiment of the utility model.

[0023] The utility model provides a straight-cylinder fixture for analyzing the performance of a sealing ring, which includes: a first plate, a second plate, a third plate, and a fastener. The first plate is formed with a first wall, a vent, and a first assembly hole, and one end of the vent passes through the first plate to communicate with the environment, and the other end passes through the first wall; the second plate is detachably connected to the first plate, and the second plate is formed with a second wall; the third plate is formed with a third wall, a detection chamber, and a second assembly hole, and the second assembly hole is arranged opposite to the first assembly hole. The detection chamber is used to place a test paper to detect the sealing performance of the sealing ring to be tested; the fastener cooperates with the first assembly hole and the second assembly hole in sequence to detachably connect the third plate to the first plate. When the first, second, and third plates are assembled and connected, the first, second, and third walls form a mounting groove for accommodating the sealing ring to be tested, and the detection chamber is located on the side of the mounting groove facing away from the first wall. The utility model provides a straight-cylinder fixture for analyzing the performance of sealing rings, wherein the first plate, the second plate and the third plate are detachably connected, which is convenient for assembling and disassembling the sealing ring to be tested and the fixture, and multiple tests can be performed on sealing rings of the same specification, thereby reducing the cost and improving the simulation efficiency; due to the arrangement of the vent holes, the sealing ring to be tested is in the same environment, thereby realizing a simulation test of the sealing ring being assembled in a specified environment; the first plate and the third plate are detachably connected by fasteners and assembly holes, and the influence of the corresponding pressing method on the sealing ring to be tested can be simulated, and a good simulation effect is achieved when the sealing ring to be tested is installed in a sealing workpiece that needs to be pressed through the assembly hole by the fastener, and the damage of the sealing ring to be tested caused by uneven pressure can also be effectively avoided.

[0024] The present invention further provides a sealing ring performance analysis test system, which includes the straight-tube fixture for sealing ring performance analysis in the above embodiment of the present invention and thus has the same advantages as above. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of a straight-tube fixture for analyzing the performance of a sealing ring provided in one embodiment of the present invention.

[0027] Figure 2 It is a schematic diagram of the horizontal structure of the first plate provided in one embodiment of the present utility model.

[0028] Figure 3 This is a fourth schematic diagram of the bottom view structure of the first plate provided in one embodiment of the present invention.

[0029] Figure 4 It is a schematic diagram of the horizontal structure of the second plate provided in one embodiment of the present utility model.

[0030] Figure 5 It is a schematic diagram of the horizontal structure of the third plate provided in one embodiment of the present utility model.

[0031] Figure 6 This is a fourth schematic diagram of the bottom view structure of the third plate provided in one embodiment of the present invention.

[0032] Reference numerals:

[0033] 100: First plate; 101: First wall; 102: Vent; 103: First assembly hole; 104: First positioning groove; 105: Through hole; 106: Guide groove; 107: Disassembly hole; 200: Second plate; 201: Second wall; 202: First positioning boss; 203: Threaded hole; 204: Drainage portion; 300: Third plate; 301: Third wall; 302: Detection chamber; 303: Second assembly hole; 304: Accommodation chamber; 305: Transition portion; 400: Sealing ring to be tested; 501: First bolt connector; 502: Nut; 600: Second bolt connector. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this embodiment.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this embodiment, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0037] In this embodiment, unless otherwise specified or limited, the terms "disposed," "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on specific circumstances.

[0038] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] The following combination Figures 1-6 The utility model describes a straight-tube fixture for analyzing the performance of a sealing ring. The straight-tube fixture for analyzing the performance of a sealing ring comprises: a first plate 100, a second plate 200, a third plate 300 and fasteners.

[0040] Among them, the first plate body 100 is formed with a first wall 101, a vent hole 102 and a first assembly hole 103, and one end of the vent hole 102 passes through the first plate body 100 and is connected to the environment, and the other end passes through the first wall 101; the second plate body 200 is detachably connected to the first plate body 100, and the second plate body 200 is formed with a second wall 201; the third plate body 300 is formed with a third wall 301, a detection chamber 302 and a second assembly hole 303, the second assembly hole 303 is arranged opposite to the first assembly hole 103, and the detection chamber 302 is used to place a test paper to detect the sealing performance of the sealing ring 400 to be tested; the fastener cooperates with the first assembly hole 103 and the second assembly hole 303 in sequence to make the third plate body 300 detachably connected to the first plate body 100.

[0041] When the first plate 100, the second plate 200 and the third plate 300 are assembled and connected, the first wall 101, the second wall 201 and the third wall 301 form an installation groove for accommodating the sealing ring 400 to be tested, and the detection chamber 302 is located on the side of the installation groove away from the first wall 101.

[0042] In the embodiment of the present invention, the first plate body 100, the second plate body 200 and the third plate body 300 can be combined and connected to form a combined body, and can also be removed separately to facilitate the assembly and removal of the sealing ring.

[0043] Specifically, the second plate 200 and the first plate 100 are detachably connected. During the assembly process, the sealing ring 400 to be tested is first inserted into the outer side of the second wall 201 of the second plate 200. Then, the second plate 200 and the first plate 100 are connected, and a test strip is placed in the detection chamber 302. Finally, the first assembly hole 103 and the second assembly hole 303 are connected via a threaded portion, forming a fixture with the sealing ring 400 to be tested installed. In the above assembly process, because the sealing ring 400 to be tested is first inserted into the second plate 200 and then assembled into the fixture, the problem of first assembling the fixture and then inserting the sealing ring 400 to be tested, which may cause damage to the sealing ring 400 to be tested, is avoided. It is understandable that if the fixture is assembled first and then the sealing ring 400 to be tested is inserted, the sealing ring 400 to be tested may be stretched and damaged. Therefore, it is considered to assemble the sealing ring 400 to be tested first and then assemble the fixture.

[0044] It can be understood that a mounting groove is formed by the first wall 101 of the first plate 100, the second wall 201 of the second plate 200 and the third wall 301 of the third plate 300, and the mounting groove is used to accommodate the sealing ring 400 to be tested, and when the first assembly hole 103 and the second assembly hole 303 are opposite to each other, fasteners can be used to fasten the two together so that the first plate 100 and the third plate 300 are assembled in place. At the same time, the sealing ring 400 to be tested is squeezed, and the sealing ring 400 to be tested is pressurized in the mounting groove to perform a sealing effect. The fixture of the present invention is placed in a specified environment, such as a high-pressure hydrogen environment. Due to the arrangement of the vent hole 102, the sealing ring 400 to be tested is in the same environment, thereby realizing a simulation test of the sealing ring being assembled in a specified environment.

[0045] The test paper in the test chamber 302 is used to test the sealing performance of the seal ring 400 to be tested. After the simulation test is completed, the fixture is taken out as a whole, the first plate 100, the second plate 200 and the third plate 300 are removed, and the test paper is observed to determine the sealing performance of the seal ring 400 to be tested. Figure 1In the structure shown, since the detection chamber 302 is located on the side of the mounting groove away from the first wall 101, that is, the side away from the vent 102, when the fixture is placed in the specified environment, the vent 102 is used to connect the sealing ring 400 to the specified environment. If the sealing performance of the sealing ring 400 to be tested is good, the test paper will not change; if the sealing performance of the sealing ring 400 to be tested fails, the test paper will change. It should be understood that the test paper should be able to change according to the specified environment in which the fixture is located. If the environment in which the fixture is located is a high-pressure hydrogen environment, the test paper should be selected accordingly.

[0046] It can be seen that the fixture provided by the present invention can be used to test the sealing performance of the sealing ring without specially preparing the workpiece that needs to be sealed. Moreover, for sealing rings of the same size, multiple repeated tests can be carried out, which reduces the cost and improves the simulation efficiency.

[0047] In addition, the first plate 100 and the third plate 300 of the present invention are assembled by fastening the first assembly hole 103 and the second assembly hole 303 together. Generally, to ensure a stable connection between the first plate 100 and the third plate 300, at least two sets of assembly holes need to be provided and fastened together using fasteners. Therefore, during the above assembly process, the first plate 100 and the third plate 300 are compressed separately in different areas, thereby affecting the localized extrusion of the test seal ring 400. The above assembly method can simulate the effect of the corresponding compression method of fasteners passing through the assembly holes on the test seal ring 400, and has a good simulation effect when the test seal ring 400 is installed in a sealing workpiece that requires regional compression.

[0048] It is worth noting that, according to the structural form of the sealing ring 400 to be tested, the present invention is not limited to the specific shape of the installation groove. If the sealing performance of the O-ring is tested, the installation groove is an annular structure.

[0049] The utility model provides a straight-cylinder fixture for analyzing the performance of a sealing ring, which includes: a first plate 100, a second plate 200, a third plate 300, and a fastener. The first plate 100 is formed with a first wall 101, a vent 102, and a first assembly hole 103. One end of the vent 102 passes through the first plate 100 to communicate with the surrounding environment, and the other end passes through the first wall 101. The second plate 200 is detachably connected to the first plate 100 and is formed with a second wall 201. The third plate 300 is formed with a third wall 301, a detection chamber 302, and a second assembly hole 303. The second assembly hole 303 is arranged opposite to the first assembly hole 103. The detection chamber 302 is used to place a test paper to detect the sealing performance of the sealing ring 400 to be tested. The fastener is sequentially engaged with the first assembly hole 103 and the second assembly hole 303 to enable the third plate 300 to be detachably connected to the first plate 100. When the first plate 100, the second plate 200 and the third plate 300 are assembled and connected, the first wall 101, the second wall 201 and the third wall 301 form an installation groove for accommodating the sealing ring 400 to be tested, and the detection chamber 302 is located on the side of the installation groove away from the first wall 101. The utility model provides a straight-cylinder fixture for analyzing the performance of sealing rings, wherein the first plate body 100, the second plate body 200 and the third plate body 300 are detachably connected, which is convenient for assembling and disassembling the sealing ring 400 to be tested and the fixture, and multiple tests can be performed on sealing rings of the same specification, thereby reducing the cost and improving the simulation efficiency; due to the arrangement of the vent holes 102, the sealing ring 400 to be tested is in the same environment, thereby realizing a simulation test of the sealing ring being assembled in a specified environment; the first plate body 100 and the third plate body 300 are detachably connected by fasteners and assembly holes, and can simulate the influence of the corresponding pressing method on the sealing ring 400 to be tested, and has a good simulation effect when the sealing ring 400 to be tested is installed in a sealing workpiece that needs to be pressed through the assembly hole by fasteners, and can also effectively avoid damage to the sealing ring 400 to be tested caused by uneven pressure.

[0050] In one embodiment of the present invention, the fastener comprises: a first bolt connector 501 and a nut 502, the first bolt connector 501 sequentially passes through the first assembly hole 103 and the second assembly hole 303, and the nut 502 is connected with the first bolt connector 501. Specifically, the fastener comprises a first bolt connector 501 and a nut 502, and multiple sets of the first bolt connector 501 and the nut 502 can be provided as needed, such as Figure 1The structure shown is equipped with two sets of first bolt connectors 501 and nuts 502. After the sealing ring 400 to be tested, the first plate 100, and the second plate 200 are assembled, the first plate 100 is docked with the third plate 300, so that the first assembly hole 103 and the second assembly hole 303 are opposite each other. The rod of the first bolt connector 501 is passed through the two assembly holes in sequence, and the nut 502 is screwed into one end of the rod. As the nut 502 is tightened, the first plate 100 and the third plate 300 are gradually pressed together, and the sealing ring 400 to be tested is squeezed.

[0051] In one embodiment of the present invention, a guide groove 106 is formed on the first wall 101. One end of the guide groove 106 extends away from the third wall 301. One end of the guide groove 106 is connected to the vent 102, and the other end of the guide groove 106 is connected to the mounting groove, so that the vent 102 is staggered and connected to the sealing ring 400 to be tested. In this embodiment, because the environment in which the fixture is placed may be a high-pressure environment, if the vent 102 is directly opposite the sealing ring 400 to be tested, it may cause deformation or even damage to the sealing ring 400 to be tested. Therefore, in this embodiment, by providing the guide groove 106 on the first wall 101, the air outlet of the vent 102 is moved to a position away from the sealing ring 400 to be tested. According to the above embodiment, the mounting groove is formed by the first wall 101, the second wall 201, and the third wall 301, which are sequentially enclosed. Therefore, it can be determined that one end of the first wall 101 is connected to the third wall 301, and the other end of the first wall 101 is connected to the second wall 201. The guide groove 106 is located on the first wall 101 and extends away from the third wall 301. In other words, the guide groove 106 extends away from the mounting groove / the sealing ring to be tested 400. This avoids damage to the sealing ring to be tested 400 caused by the air outlet of the vent hole 102 directly blowing. On the one hand, it can ensure that the sealing ring to be tested 400 is connected to the external environment, and on the other hand, it can reduce the impact damage of the high-pressure airflow on the sealing ring to be tested 400. It should be understood that a gap is left between the guide groove 106 and the upper end surface of the second plate 200 to allow airflow to pass through and connect with the mounting groove.

[0052] In one embodiment of the present invention, a drainage portion 204 is formed on the second wall 201 and near the guide groove 106. One end of the drainage portion 204 extends toward one end of the guide groove 106, and the other end of the drainage portion 204 extends toward the third wall 301. Preferably, the drainage portion 204 can adopt a sloped or arc transition surface structure formed on the second wall 201. On the one hand, it has the effect of draining the gas from the outlet of the vent 102, guiding the external ambient airflow to the position of the sealing ring to be tested 400; on the other hand, it reduces the impact damage caused by the high-pressure airflow to the second wall 201, thereby improving the durability of the fixture. Moreover, the drainage portion 204 is located on the second wall 201, and can play a transition role when the sealing ring to be tested is inserted, and can also further reduce the damage caused by the insertion of the sealing ring to be tested.

[0053] In one embodiment of the present invention, a first positioning groove 104 is provided on the side of the first plate body 100 close to the second plate body 200, and a first positioning boss 202 is provided on the side of the second plate body 200 close to the first plate body 100, and the first positioning boss 202 can be embedded in the first positioning groove 104 to position the second plate body 200 and the first plate body 100; or, a second positioning boss is provided on the side of the first plate body 100 close to the second plate body 200, and a second positioning groove is provided on the side of the second plate body 200 close to the first plate body 100, and the second positioning boss can be embedded in the second positioning groove to position the second plate body 200 and the first plate body 100. In the present invention, in order to facilitate the positioning and rapid assembly of the first plate body 100 and the second plate body 200, the first plate body 100 and the second plate body 200 are quickly docked by matching and snapping the positioning boss and the positioning groove. In this embodiment, two forms of positioning bosses and positioning grooves that can be interchanged are provided. As shown in the following example Figure 1 The structure shown is used as an example. A first positioning groove 104 is processed on the bottom of the first plate body 100, and a first positioning boss 202 is processed on the upper part of the second plate body 200. According to actual conditions, the processing positions of the two can be interchanged, as long as the positioning groove and the positioning boss can be positioned and connected. That is, in this embodiment, a second positioning boss is processed on the bottom of the first plate body 100, and a second positioning groove is processed on the upper part of the second plate body 200.

[0054] In one embodiment of the present invention, the third plate 300 is formed with a stepped groove, which sequentially forms a receiving chamber 304 and a detection chamber 302. The first plate 100 is at least partially placed in the receiving chamber 304 and is formed with a first stepped surface for snapping onto the stepped groove, such that the second assembly hole 303 is opposite the first assembly hole 103. The second wall 201 is a second stepped surface, and the second plate 200 is placed in the receiving chamber 304. In this embodiment, the third plate 300 forms a double-layer stepped groove, sequentially forming the receiving chamber 304 and the detection chamber 302 from top to bottom. The receiving chamber 304 is used to accommodate the first plate 100 and the second plate 200. The upper end surface of the receiving chamber 304 is snapped onto the first stepped surface of the first plate 100. The stepped groove and the first stepped surface have a positioning function, ensuring that the second assembly hole 303 is opposite the first assembly hole 103. After the first plate 100 and the second plate 200 are assembled, the second stepped surface forms a groove with the first wall 101, and the test seal ring 400 is inserted into this groove. After the first plate 100 and the third plate 300 are assembled, the upper half of the first plate 100 is exposed outside the accommodating chamber 304 and abuts against the upper end face of the third plate 300, while the lower half is placed inside the accommodating chamber 304. The outer side of the test seal ring 400 is squeezed by the third wall 301, thus achieving a sealing effect. Gas from the vent 102 enters the mounting groove. If the sealing performance of the test seal ring 400 fails, the airflow flows through the gap between the third wall 301 and the second wall 201 to the test chamber 302, causing the test paper to change. If the sealing performance of the seal ring is excellent, the airflow to the test chamber 302 is blocked.

[0055] In one embodiment of the present invention, a transition portion 305 connecting adjacent end faces is formed on the inner wall of the accommodating chamber 304 at one end away from the detection chamber 302 to gradually squeeze the sealing ring 400 to be tested. After the sealing ring 400 to be tested is assembled, the first assembly hole 103 and the third assembly hole are opposite each other, and the sealing ring 400 to be tested is in a free state. As the fastener is tightened, the sealing ring 400 to be tested will contact the stepped groove and be compressed to provide a sealing effect. However, the sharp end of the stepped groove may damage the sealing ring 400 to be tested. Therefore, in this embodiment, a transition portion 305 is provided at the connection between the horizontal end face and the vertical end face at the upper end of the accommodating chamber 304, thereby gradually squeezing the sealing ring 400 to be tested and preventing damage. Preferably, the transition portion 305 can be a transition bevel or a transition arc surface; preferably, the angle of the transition bevel is 67° with the horizontal.

[0056] In one embodiment of the present invention, the first wall 101 is a horizontal surface close to the second plate 200, and the third wall 301 is a vertical surface inside the receiving chamber 304. According to the description of the above embodiment, the second wall 201 is a stepped surface, providing a bottom horizontal surface and side vertical surfaces, which cooperate with the first wall 101 and the third wall 301 to form a vertical groove for accommodating the sealing ring 400 to be tested.

[0057] In one embodiment of the present invention, a disassembly hole 107 is provided on the first plate 100. When the first plate 100, the second plate 200, and the third plate 300 are assembled and connected, and the fasteners are removed, the disassembly hole 107 is used to insert a locking member, which is then locked to separate the third plate 300 from the first plate 100. After the first plate 100, the second plate 200, and the third plate 300 are assembled, the sealing ring 400 to be tested is squeezed and deformed, and even after the fasteners are removed, it may still be difficult to separate the first plate 100 from the third plate 300. Therefore, in this embodiment, the disassembly hole 107 is machined on the third plate 300. The third plate 300 can be separated from the first plate 100 by inserting a locking member into the disassembly hole 107 and applying external force to the locking member. Preferably, the disassembly hole 107 is a threaded hole 203, and the locking member is a bolt. After the bolt is screwed into the threaded hole 203, the nut is clamped with a wrench and pulled outward, and the third plate body 300 is driven by the bolt to separate it from the first plate body 100.

[0058] In one embodiment of the present invention, the straight-tube fixture for analyzing the performance of a sealing ring further includes: a second bolt connector 600. The first plate 100 is formed with a through-hole 105 extending therethrough, and the second plate 200 is formed with a threaded hole 203. The second bolt connector 600 passes through the through-hole 105 and connects with the threaded hole 203, thereby enabling a detachable connection between the second plate 200 and the first plate 100. Specifically, the threaded hole 203 is located at the center of the positioning boss. After the first plate 100 and the second plate 200 are positioned, the bolt connector is passed through the through-hole 105 of the first plate 100 and tightened with the threaded hole 203 of the second plate 200, thereby achieving a tight connection between the first plate 100 and the second plate 200.

[0059] The present invention also provides a method for assembling the straight-tube fixture for analyzing the performance of a sealing ring according to the above embodiment of the present invention. The assembly method comprises the following steps:

[0060] S1. Insert the sealing ring 400 to be tested onto the outer side of the second wall 201 of the second plate 200;

[0061] S2. Connect the second plate 200 to the first plate 100 and place a test strip into the detection chamber 302;

[0062] S3. Use fasteners to assemble and cooperate with the first assembly hole 103 and the second assembly hole 303 to connect the third plate 300 to the first plate 100.

[0063] Specifically, the sealing ring 400 to be tested is first inserted into the outer side of the second stepped surface of the second plate body 200, and then the first plate body 100 and the second plate body 200 are connected by the second bolt connector 600. At this time, the first wall surface 101 is located above the sealing ring 400 to be tested, and the test paper is placed in the detection chamber 302. Finally, the first plate body 100 is inserted into the stepped groove of the third plate body 300, so that the first assembly hole 103 is opposite to the second assembly hole 303, and the above-mentioned assembly holes are tightened by fasteners. During the tightening process, the sealing ring 400 to be tested is squeezed by the third wall surface 301 located on the outside, so that it exerts a sealing effect.

[0064] It can be seen that the utility model provides an assembly method of a threaded fixture for sealing ring performance analysis, which can first install the sealing ring 400 to be tested on the second plate 200, and then assemble the fixture to avoid the sealing ring 400 to be tested from being stretched or damaged during the fixture assembly process.

[0065] The utility model further provides a sealing ring performance analysis test system, which comprises: the straight-cylinder fixture for sealing ring performance analysis in the above embodiment of the utility model.

[0066] The present invention further provides a sealing ring performance analysis test system, which includes the straight-tube fixture for sealing ring performance analysis in the above embodiment of the present invention and thus has the same advantages as above.

[0067] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment. Those of ordinary skill in the art can understand and implement the present invention without inventive effort.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A straight-tube fixture for analyzing the performance of a sealing ring, characterized in that: include: A first plate body (100) is formed with a first wall surface (101), a vent hole (102) and a first assembly hole (103), wherein one end of the vent hole (102) passes through the first plate body (100) to communicate with the surrounding environment, and the other end passes through the first wall surface (101); A second plate body (200) is detachably connected to the first plate body (100), and the second plate body (200) is formed with a second wall surface (201); The third plate (300) is formed with a third wall (301), a detection chamber (302) and a second assembly hole (303), wherein the second assembly hole (303) is arranged opposite to the first assembly hole (103), and the detection chamber (302) is used to place a test paper to detect the sealing performance of the sealing ring (400) to be tested; a fastener, which sequentially cooperates with the first assembly hole (103) and the second assembly hole (303) to enable the third plate body (300) to be detachably connected to the first plate body (100); When the first plate (100), the second plate (200) and the third plate (300) are assembled and connected, the first wall (101), the second wall (201) and the third wall (301) form a mounting groove for accommodating the sealing ring (400) to be tested, and the detection chamber (302) is located on a side of the mounting groove facing away from the first wall (101).

2. The straight-tube fixture for analyzing sealing ring performance according to claim 1, characterized in that: The fastener comprises: a first bolt connector (501) and a nut (502), wherein the first bolt connector (501) passes through the first assembly hole (103) and the second assembly hole (303) in sequence, and the nut (502) is cooperatively connected with the first bolt connector (501).

3. The straight-tube fixture for analyzing sealing ring performance according to claim 1, characterized in that: A guide groove (106) is formed on the first wall surface (101), one end of the guide groove (106) extends in a direction away from the third wall surface (301), and one end of the guide groove (106) is connected to the vent hole (102), and the other end of the guide groove (106) is communicated with the mounting groove, so that the vent hole (102) and the sealing ring (400) to be tested are staggered and communicated.

4. The straight-tube fixture for analyzing sealing ring performance according to claim 3 is characterized in that: A drainage portion (204) is formed on the second wall surface (201) and at a position close to the guide groove (106), one end of the drainage portion (204) extends toward one end of the guide groove (106), and the other end of the drainage portion (204) extends toward the direction of the third wall surface (301).

5. The straight-tube fixture for analyzing sealing ring performance according to claim 1, characterized in that: A first positioning groove (104) is provided on a side of the first plate body (100) close to the second plate body (200), and a first positioning boss (202) is provided on a side of the second plate body (200) close to the first plate body (100), and the first positioning boss (202) can be embedded in the first positioning groove (104) to position the second plate body (200) with the first plate body (100); or, A second positioning boss is provided on a side of the first plate body (100) close to the second plate body (200), and a second positioning groove is provided on a side of the second plate body (200) close to the first plate body (100), and the second positioning boss can be embedded in the second positioning groove to position the second plate body (200) and the first plate body (100).

6. The straight-tube fixture for analyzing sealing ring performance according to claim 1, characterized in that: The third plate body (300) is formed with a stepped groove, and the stepped groove sequentially forms a accommodating chamber (304) and the detection chamber (302), the first plate body (100) is at least partially placed in the accommodating chamber (304) and is formed with a first stepped surface to be snapped onto the stepped groove, so that the second assembly hole (303) is opposite to the first assembly hole (103), the second wall surface (201) is a second stepped surface and the second plate body (200) is placed in the accommodating chamber (304).

7. The straight-tube fixture for analyzing sealing ring performance according to claim 6, characterized in that: A transition portion (305) connecting adjacent end surfaces is formed on the inner wall of the accommodating chamber (304) and at one end away from the detection chamber (302) to gradually squeeze the sealing ring (400) to be tested.

8. The straight-tube fixture for analyzing sealing ring performance according to claim 6, characterized in that: The first wall surface (101) is a horizontal surface close to the second plate body (200), and the third wall surface (301) is a vertical surface inside the accommodating chamber (304).

9. The straight-tube fixture for analyzing sealing ring performance according to claim 1, characterized in that: A disassembly hole (107) is provided on the first plate body (100). When the first plate body (100), the second plate body (200) and the third plate body (300) are assembled and connected, and the fastener is removed, the disassembly hole (107) is used to insert a locking member, and the locking member is used to disassemble and separate the third plate body (300) from the first plate body (100).

10. The straight-tube fixture for analyzing sealing ring performance according to any one of claims 1 to 9, characterized in that: Also includes: A second bolt connector (600) is provided, wherein the first plate body (100) is formed with a through hole (105), and the second plate body (200) is formed with a threaded hole (203), and the second bolt connector (600) passes through the through hole (105) and is connected to the threaded hole (203), so that the second plate body (200) and the first plate body (100) are detachably connected.

11. A sealing ring performance analysis test system, characterized in that: include: A straight cylindrical fixture for analyzing sealing ring performance according to any one of claims 1 to 10.

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