Disassembling and positioning jig for seal ring detection and detection device

Abstract

The utility model relates to detection field provides a kind of dismounting positioning fixture and detection device for seal ring detection.The dismounting positioning fixture for seal ring detection includes base;Mounting seat, for with base cooperation to form the sealing cavity for accommodating seal ring;Locking assembly, locking assembly includes the locking bolt that can rotate about its own axis, locking bolt is detachably connected in base;Mounting seat is equipped with the limiting hole corresponding with locking bolt;Locking bolt has connecting portion and locking portion, locking bolt is suitable for switching between first position and second position, in first position, locking portion is suitable for passing through limiting hole, from first position to second position, connecting portion is suitable for passing through limiting hole, in second position, locking portion is suitable for with the hole end surface interference of limiting hole, to lock mounting seat in base.The dismounting positioning fixture for seal ring detection can reduce dismounting working hours, improve detection efficiency;Reduce equipment cost, improve fixture universality and high-pressure detection security.

Description

Technical Field

[0001] This utility model relates to the field of testing, and provides a disassembly and positioning fixture and testing device for testing sealing rings. Background Technology

[0002] In the field of high-pressure hydrogen sealing performance testing, O-rings are crucial sealing elements, and their leak detection is of paramount importance. Traditional leak detection fixtures mainly adopt a bolted connection structure, using bolts to fix the upper and lower plates to form a sealed cavity. This method can effectively contain hydrogen and monitor leaks in high-pressure vessel testing. However, such fixture designs have some significant problems in practical applications, especially when conducting rapid batch testing in a high-pressure hydrogen environment.

[0003] First, bolted clamps suffer from significant inefficiency. During repeated assembly and disassembly, each operation requires tightening or loosening the bolts individually with tools, a time-consuming process that becomes a major challenge, especially in automated or high-frequency testing scenarios. Second, bolted clamps pose safety hazards during disassembly. If high-pressure hydrogen gas remains inside the clamp, the upper and lower plates may suddenly shatter when the bolts are loosened, generating a high-speed impact. This not only threatens the safety of operators but may also damage the O-ring samples or testing equipment. Utility Model Content

[0004] This utility model provides a disassembly and positioning fixture for testing sealing rings, which solves the defects of low clamping efficiency and low safety performance of sealing rings in related technologies.

[0005] This utility model embodiment also provides a detection device for sealing rings.

[0006] The first aspect of this utility model provides a disassembly and positioning fixture for testing sealing rings, comprising: Base; Mounting base for engaging with the base to form a sealing cavity for accommodating the sealing ring; A locking assembly, the locking assembly including a locking bolt rotatable about its own axis, the locking bolt being detachably connected to the base; The mounting base is provided with a limiting hole corresponding to the locking bolt; The locking bolt has a connecting portion and a locking portion. The locking bolt is adapted to switch between a first position and a second position. In the first position, the locking portion is adapted to pass through the limiting hole. From the first position to the second position, the connecting portion is adapted to pass through the limiting hole. In the second position, the locking portion is adapted to interfere with the end face of the limiting hole to lock the mounting base to the base.

[0007] According to one embodiment of the present invention, the locking bolt further includes a central rod portion, and the connecting portion and the locking portion are formed at both ends of the central rod portion.

[0008] According to one embodiment of the present invention, the connecting part has a first surface, the locking part has a second surface, and the first surface and the second surface are respectively located in different planes along the axial direction of the central rod.

[0009] According to one embodiment of the present invention, the locking bolt is rotatably mounted on the base via a hinge.

[0010] According to one embodiment of the present invention, the rotation axis of the hinge is perpendicular to the surface of the base.

[0011] According to one embodiment of the present invention, the locking assembly further includes a handle, which, in the second position, is used to connect to the locking portion and / or the central rod portion to lock the mounting seat to the base.

[0012] According to one embodiment of the present invention, the disassembly and positioning fixture for detecting the sealing ring further includes a locking pin and a positioning seat. The locking pin is detachably connected to the base, and the positioning seat is located between the mounting base and the base. In the second position, the locking pin is used to lock the base and the positioning seat.

[0013] According to one embodiment of the present invention, a positioning platform for positioning the sealing ring is formed on the positioning seat.

[0014] According to one embodiment of the present invention, at least one of the base and the mounting seat is provided with a positioning structure for positioning the sealing ring.

[0015] A second aspect of this utility model provides a device for detecting sealing rings, including the disassembly and positioning fixture for detecting sealing rings as described above.

[0016] According to the first aspect of the present invention, the disassembly and positioning fixture for sealing ring testing is a traditional fixture that uses multiple sets of bolts for through-locking. Disassembly requires unscrewing each bolt individually, which is time-consuming and labor-intensive. This fixture locks the ring in two steps: insertion and rotation. Disassembly is achieved by simply rotating in the opposite direction, making it particularly suitable for batch sealing ring testing scenarios, significantly reducing disassembly and assembly time and improving testing efficiency. The locking bolt, at the second position, interferes with the end face of the limiting hole, applying uniform axial pressure to the mounting base, ensuring a tight fit between the mounting base and the base without any assembly gaps. This ensures that the sealing cavity does not leak under high pressure, preventing data distortion due to cavity leakage and guaranteeing the accuracy of the test results. By replacing the mounting base or base with different sizes, it can accommodate rubber O-rings with different inner and outer diameters, eliminating the need to customize a complete set of fixtures for each specification, reducing equipment investment costs and improving fixture versatility. The self-tightening locking mechanism ensures that the sealed cavity is leak-free under high pressure, avoiding safety hazards caused by leaks of flammable and explosive fluids such as high-pressure hydrogen. At the same time, the detachable connection design of the locking bolt avoids cavity depressurization caused by loosening of traditional bolts, further improving the safety of high-pressure testing scenarios.

[0017] According to the second aspect of the present invention, the detection device for sealing rings is suitable for batch sealing ring detection scenarios by setting the above-mentioned disassembly and assembly positioning fixture for sealing ring detection. It can effectively reduce disassembly and assembly time, improve the batch detection efficiency of sealing rings, and at the same time, ensure safety performance in high-pressure detection scenarios. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic perspective view of the disassembly and positioning fixture for testing sealing rings provided by this utility model.

[0020] Figure 2 This is a schematic perspective view of the disassembly and positioning fixture for sealing ring testing provided by this utility model, with the handle hidden.

[0021] Figure 3 This is a schematic perspective view of the disassembly and positioning fixture for testing sealing rings provided by this utility model, with the handle and mounting base concealed.

[0022] Figure 4 This is a schematic perspective view of the base and locking bolt provided by this utility model.

[0023] Figure 5This is a schematic perspective view of the positioning seat provided by this utility model.

[0024] Figure label: 100. Base; 102. Mounting seat; 104. Limiting hole; 106. Connecting part; 108. Locking part; 110. Center rod part; 112. First surface; 114. Second surface; 116. Hinge; 118. Handle; 120. Locking pin; 122. Positioning seat; 124. Positioning platform; 126. Positioning structure. Detailed Implementation

[0025] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0026] like Figures 1 to 5 As shown, the first aspect of this utility model provides a disassembly and positioning fixture for testing sealing rings, comprising: Base 100; Mounting base 102 is used to mate with base 100 to form a sealing cavity for receiving a sealing ring; A locking assembly, comprising a locking bolt rotatable about its own axis, the locking bolt being detachably connected to the base 100; Mounting base 102 is provided with limiting hole 104 corresponding to locking bolt; The locking bolt has a connecting portion 106 and a locking portion 108. The locking bolt is adapted to switch between a first position and a second position. In the first position, the locking portion 108 is adapted to pass through a limiting hole 104. From the first position to the second position, the connecting portion 106 is adapted to pass through the limiting hole 104. In the second position, the locking portion 108 is adapted to interfere with the end face of the limiting hole 104 to lock the mounting base 102 onto the base 100.

[0027] According to the first aspect of the present invention, the sealing ring testing disassembly and positioning fixture provides a traditional fixture that uses multiple sets of bolts for through-locking, requiring each bolt to be unscrewed during disassembly, which is time-consuming and labor-intensive. This fixture can be locked in two steps: insertion and rotation. Disassembly is achieved by rotating in the opposite direction, making it particularly suitable for batch sealing ring testing scenarios, significantly reducing disassembly and assembly time and improving testing efficiency. The locking bolt, at the second position, interferes with the end face of the limiting hole 104, applying uniform axial pressure to the mounting base 102, ensuring a tight fit between the mounting base 102 and the base 100 without assembly gaps. This ensures that the sealing cavity does not leak under high pressure, avoiding data distortion due to cavity leakage and guaranteeing the accuracy of the test results. By replacing the mounting base 102 or base 100 with different sizes, it can accommodate rubber O-rings with different inner and outer diameters, eliminating the need to customize a complete set of fixtures for each specification, reducing equipment investment costs and improving fixture versatility. The self-tightening locking mechanism ensures that the sealed cavity is leak-free under high pressure, avoiding safety hazards caused by leaks of flammable and explosive fluids such as high-pressure hydrogen. At the same time, the detachable connection design of the locking bolt avoids cavity depressurization caused by loosening of traditional bolts, further improving the safety of high-pressure testing scenarios.

[0028] Please continue reading Figures 1 to 5 The first aspect of this utility model provides a disassembly and positioning fixture for testing sealing rings. Targeting the sealing performance testing requirements of high-pressure hydrogen rubber O-rings, it achieves rapid disassembly and assembly, precise positioning, and high-pressure sealing of the sealing rings through a core design of split clamping and self-tightening locking.

[0029] Specifically, the base 100 is a rectangular or circular rigid metal component, integrally formed by forging or precision milling, possessing sufficient compressive strength and flatness, and can be fixed to the testing platform with bolts. The upper surface of the base 100 serves as a reference surface, supporting the mounting base 102 and the clamping structure, and the surface is smoothed to reduce assembly gaps. According to the design requirements of the sealing cavity, a positioning structure 126 can be pre-set on the base 100 to initially limit the position of the sealing ring to be tested, ensuring accurate installation of the sealing ring. The base 100 has mounting interfaces for locking components machined on its edges or sides, adapting to the detachable connection of the locking bolt, and also has pre-drilled holes for locking pins 120 to ensure coordinated assembly of all components.

[0030] Mounting base 102 is a metal cover plate that matches the size of base 100. It has uniform thickness and rigidity to prevent deformation under pressure. The lower surface of mounting base 102 mates with the upper surface of base 100 to form a closed sealing cavity. The shape and volume of the cavity are adapted to the size of the sealing ring to be tested, ensuring that the sealing ring is completely placed in the cavity without being squeezed or deformed. Mounting base 102 has limiting holes 104 that correspond one-to-one with locking bolts. The limiting holes 104 are through circular holes. The hole diameter is designed to allow the locking part 108 to pass through and to allow the locking part 108 to interfere with the end face of the hole after rotation. The diameter of the limiting hole 104 is slightly larger than the maximum width of the locking part 108, but smaller than the projected width of the locking part 108 after rotation, ensuring that the locking bolt can be reliably locked in the second position.

[0031] The locking assembly is centered around a locking bolt and works with a limiting hole 104 to achieve quick locking between the mounting base 102 and the base 100. Its core function is to achieve self-tightening through insertion and rotation. The locking assembly includes a locking bolt, which is a multi-segment metal component with the ability to rotate around its own axis. The whole assembly includes a connecting part 106 and a locking part 108.

[0032] The connecting part 106 is located at the lower end of the locking bolt and has an external thread structure, a boss structure, or a hinge structure. It is adapted to the mounting interface of the base 100 to realize the detachable connection between the locking bolt and the base 100. If it is an external thread, the connecting part 106 is screwed into the threaded hole of the base 100; if it is a boss, the connecting part 106 is embedded in the limiting groove of the base 100; if it is a hinge, the connecting part 106 is hinged to the base 100 through a pin.

[0033] The locking part 108 is located at the upper end of the locking bolt. It is a non-circular structure or a circular structure with a diameter larger than that of the limiting hole 104. Its size design satisfies the following conditions: in the first position, it can pass through the limiting hole 104, and in the second position, it interferes with the end face of the hole. In the first position, the projected outline of the locking part 108 falls completely within the range of the limiting hole 104 and can pass through smoothly. After rotating to the second position, the projected outline of the locking part 108 exceeds the range of the limiting hole 104 and forms a surface contact interference with the upper surface of the mounting base 102. The mounting base 102 is pressed and fixed to the base 100 by friction and pressure.

[0034] The position switching of the locking bolt is achieved by rotating it around its own axis. The operator aligns the locking bolt with the limiting hole 104 of the mounting base 102, so that the locking part 108 passes through the limiting hole 104 in the first position until the connecting part 106 is connected to the base 100. Then, the locking bolt is rotated, which drives the locking part 108 to rotate synchronously to the second position. At this time, the locking part 108 cannot pass out of the limiting hole 104. The mounting base 102 is locked by interference force, and the assembly is completed. When disassembling, the locking bolt is rotated in the opposite direction to the first position, so that the locking bolt can be taken out upward or turned outward to separate the mounting base 102 from the base 100.

[0035] The general procedure for using the disassembly and assembly positioning fixture for sealing ring testing provided in the first aspect of this utility model is as follows: Place the sealing ring to be tested into the positioning structure 126 of the base 100 to ensure that the sealing ring is not offset or twisted, and perform initial positioning; Cover the mounting base 102 onto the base 100, so that the limiting hole 104 of the mounting base 102 is precisely aligned with the locking bolt installation position on the base 100, ensuring that the locking bolt can pass smoothly through the limiting hole 104. The locking part 108 of the locking bolt passes through the limiting hole 104 of the mounting base 102 in the first position, so that the connecting part 106 is connected and fixed to the base 100; the locking bolt is rotated around its own axis to the second position, at which time the locking part 108 interferes with the end face of the limiting hole 104, pressing the mounting base 102 against the base 100, and sealing the cavity. High-pressure fluid is introduced into the sealed cavity for testing. After the test is completed, the locking bolt is rotated in the opposite direction to the first position, the locking bolt is removed, the mounting base 102 is removed, and the sealing ring is taken out, thus completing one test cycle.

[0036] According to one embodiment of the present invention, the locking bolt further includes a central rod portion 110, a connecting portion 106, and a locking portion 108 formed at both ends of the central rod portion 110.

[0037] In one embodiment of this utility model, the central rod 110 is a cylindrical metal rod made of a high-strength alloy, possessing sufficient rigidity to withstand the force during locking. The connecting part 106 is integrally formed at one end of the central rod 110 and has an external thread structure for detachable connection with the base 100. If it is an external thread, the base 100 has a corresponding internal thread hole, and the connecting part 106 can be screwed into the threaded hole for fixation; if it is a boss, the base 100 has a limiting groove, and the boss is embedded in the groove for initial positioning. The locking part 108 is integrally formed at the other end of the central rod 110 and is a disc-shaped structure with a diameter larger than that of the central rod 110. The outer diameter of the disc is larger than the diameter of the limiting hole 104 in the mounting base 102, ensuring subsequent interference locking with the end face of the limiting hole 104. The length of the central rod 110 is adapted to the assembly thickness of the base 100 and the mounting base 102, ensuring that after the connecting part 106 is fixed to the base 100, the locking part 108 can smoothly pass through the limiting hole 104 and complete the rotation locking.

[0038] The connecting part 106, the central rod part 110, and the locking part 108 are integrally formed without splicing gaps, avoiding locking failure caused by loose connections in traditional split structures. This ensures that the locking bolt maintains structural stability after repeated disassembly and assembly and under stress, extending its service life. The central rod part 110, acting as a force transmission carrier, can evenly transmit the interference force of the locking part 108 to the connecting part 106 and the base 100, preventing deformation of the base 100 or mounting seat 102 due to localized stress concentration, protecting the main structure of the fixture, and ensuring a tight seal between the mounting seat 102 and the base 100 to prevent leakage of the sealed cavity. The integrated structure requires no assembly; it can be used directly by fixing it to the base 100 via the connecting part 106. Compared to locking bolts with multiple spliced ​​parts, this reduces assembly steps and the probability of operational errors, making it particularly suitable for rapid fixture adjustments in batch testing scenarios.

[0039] According to one embodiment of the present invention, the connecting part 106 has a first surface 112 and the locking part 108 has a second surface 114. Along the axial direction of the central rod part 110, the first surface 112 and the second surface 114 are respectively located in different planes.

[0040] In one embodiment of this utility model, the connecting part 106 can be generally in the form of a rectangular block structure. Similarly, the locking part 108 can also be generally in the form of a rectangular block structure. Correspondingly, the first surface 112 of the connecting part 106 is the four outer circumferential surfaces of the connecting part 106, and the second surface 114 of the locking part 108 is the four outer circumferential surfaces of the locking part 108. Along the axial direction of the central rod part 110, the first surface 112 and the second surface 114 are not coplanar. For example, when the connecting part 106 is viewed directly, only one of the first surfaces 112 of the connecting part 106 can be seen from this angle, while the two second surfaces 114 of the locking part 108 can be seen at the same time.

[0041] The staggered planar design avoids interference between the connecting part 106 and the locking part 108 during assembly, while ensuring that the central rod part 110 can smoothly pass through the limiting hole 104 of the mounting base 102 without jamming, thus improving the smoothness of disassembly and assembly.

[0042] According to one embodiment of the present invention, the locking bolt is rotatably mounted on the base 100 via a hinge 116.

[0043] In one embodiment of this utility model, the hinge 116 can be a rotating pin, one end of which can be threaded to the base 100, and the other end of which is provided with a mounting hole that matches the connecting part 106.

[0044] The hinge 116 keeps the locking bolt connected to the base 100 at all times, avoiding the loss problem caused by frequent disassembly and assembly of traditional detachable locking bolts, and reducing the cost and time wasted on parts replenishment. There is no need to repeatedly insert, remove, or twist the connection between the locking bolt and the base 100; alignment, locking, and disengagement can be achieved simply by rotation, reducing disassembly steps. For example, when replacing the sealing ring, simply rotate the locking bolt to detach it from the mounting base 102 to remove the base 102, significantly improving operational efficiency. The fixed rotation axis of the hinge 116 ensures that the locking bolt is accurately aligned with the limiting hole 104 with each rotation, avoiding positional deviations caused by reinstallation of the locking bolt, reducing the alignment adjustment time of the mounting base 102, and ensuring consistent locking accuracy each time.

[0045] According to one embodiment of the present invention, the rotation axis of the hinge 116 is perpendicular to the surface of the base 100.

[0046] In one embodiment of this utility model, the locking bolt can rotate around a vertical axis on a horizontal plane. The rotation range is 0° and 90°: when the locking bolt rotates to 0°, its central rod portion 110 and locking portion 108 are aligned with the limiting hole 104 of the mounting base 102, and can be inserted and locked; when rotated to 90°, the locking bolt is completely disengaged from the area above the limiting hole 104, and does not obstruct the mounting base 102 from being placed or removed. The pin and shaft hole of the hinge member 116 are both smoothed and lubricated to ensure that the locking bolt rotates smoothly without jamming.

[0047] The rotation axis perpendicular to the surface of the base 100 allows the locking bolt to rotate on the horizontal plane, making it suitable for compact testing platforms and improving equipment space utilization. When rotating horizontally, the operator only needs to apply horizontal force, which is more ergonomic than vertical insertion, removal, or flipping, reducing hand fatigue and making it especially suitable for batch testing scenarios with frequent disassembly and assembly.

[0048] According to one embodiment of the present invention, the locking assembly further includes a handle 118. In a second position, the handle 118 is used to connect to the locking portion 108 and / or the center rod portion 110 to lock the mounting base 102 to the base 100.

[0049] In one embodiment of this utility model, the handle 118 is generally U-shaped, and both ends of the handle 118 are adapted to the top of the locking part 108; when the locking bolt is in the second position, the handle 118 is sleeved onto the top of the locking part 108 to form a detachable connection. Through holes are provided on the handle 118, the locking part 108, and / or the central rod part 110, and bolts are inserted through the through holes so that the mounting base 102 can be pressed against the base 100.

[0050] In addition, the surface of the handle 118 can be covered with a non-slip rubber sleeve to increase grip friction and prevent slippage when rotating; after use, the handle 118 can be removed from the locking part 108 for separate storage or use in other locking components.

[0051] The handle 118 prevents direct contact between the operator and the locking part 108, thus avoiding surface wear and preventing deformation of the locking part 108 due to hand slippage during rotation. This protects the locking accuracy of the locking bolt and extends its service life. Furthermore, pressing the handle 118 ensures that the mounting base 102 is more tightly pressed against the base 100.

[0052] According to one embodiment of the present invention, the disassembly and positioning fixture for sealing ring testing further includes a locking pin 120 and a positioning seat 122. The locking pin 120 is detachably connected to the base 100, and the positioning seat 122 is located between the mounting seat 102 and the base 100. In a second position, the locking pin 120 is used to lock the base 100 and the positioning seat 122.

[0053] In one embodiment of this utility model, the positioning seat 122 is a rectangular metal plate with uniform thickness and a flat surface, located between the mounting seat 102 and the base 100. Its dimensions are adapted to both the mounting seat 102 and the base 100, and a through hole corresponding to the sealing cavity is opened in its center. The base 100 has a pin hole, and the positioning seat 122 has a through hole of the same diameter at the corresponding position. The locking pin 120 is a bolt, screw, etc., with a rounded head at one end for easy gripping. It can be inserted into the pin hole of the base 100 and the through hole of the positioning seat 122 to achieve locking between the two. In a second position, the locking pin 120 is passed sequentially through the through hole of the positioning seat 122 and the pin hole of the base 100. Through interference fit or threaded locking, the positioning seat 122 is fixed to the base 100. Simultaneously, the lower surface of the positioning seat 122 adheres to the base 100, and the upper surface adheres to the mounting seat 102, further enhancing the assembly sealing of the three components. For disassembly, the positioning seat 122 can be removed by pulling out the locking pin 120.

[0054] The positioning seat 122 is clamped between the mounting seat 102 and the base 100, filling the tiny gap between them. Combined with the locking force of the locking pin 120, this ensures a tight fit between the three, preventing high-pressure fluid leakage from the sealed cavity due to gaps. This is particularly suitable for high-precision seal testing scenarios. The locking pin 120 and the locking bolt work together to distribute the locking force of the mounting seat 102 to multiple positions on the base 100, preventing deformation of the mounting seat 102 due to excessive force at a single point, protecting the flatness of the mounting seat 102 and the base 100, and extending the fixture's service life. By replacing the positioning seat 122 with different thicknesses, the height of the sealed cavity can be adjusted to accommodate sealing rings of different thicknesses without replacing the base 100 or the mounting seat 102, improving the fixture's versatility and reducing equipment investment costs.

[0055] According to one embodiment of the present invention, a positioning platform 124 for positioning the sealing ring is formed on the positioning seat 122.

[0056] In one embodiment of this utility model, the positioning platform 124 is an annular protrusion surrounding the central through hole of the positioning seat 122, integrally formed on the surface of the positioning seat 122 facing the sealing ring. The cross-section of the protrusion is rectangular or arc-shaped, the width of which matches the width of the sealing ring to be measured, and the height is slightly lower than the reserved gap of the sealing cavity. When the positioning seat 122 is installed between the base 100 and the mounting seat 102, the end face of the positioning platform 124 directly contacts the top or bottom surface of the sealing ring. Under the combined locking force of the locking pin 120 and the locking bolt, the positioning platform 124 is used to achieve axial positioning of the sealing ring. The surface of the positioning platform 124 is smoothed to avoid scratching the surface of the sealing ring and to reduce friction with the sealing ring, making it easier to remove the sealing ring later.

[0057] The axial positioning function of the positioning stage 124 allows the sealing ring to be accurately installed between the base 100 and the positioning seat 122. The annular protrusion of the positioning stage 124 acts only on the effective sealing area of ​​the sealing ring, avoiding compression damage to the non-sealing parts of the sealing ring. At the same time, the smooth surface reduces friction, ensuring that the sealing ring retains its original shape after testing, facilitating subsequent observation or secondary testing. The annular positioning stage 124 can evenly distribute pressure in the circumferential direction of the sealing ring, ensuring consistent sealing performance in all parts of the sealing ring and improving the repeatability of test results.

[0058] According to one embodiment of the present invention, at least one of the base 100 and the mounting base 102 is provided with a positioning structure 126 for positioning the sealing ring.

[0059] In one embodiment of this utility model, the positioning structure 126 is an annular groove formed on the upper surface of the base 100. The inner and outer diameters of the groove are precisely matched with the inner and outer diameters of the sealing ring to be tested, and the depth is slightly less than the thickness of the sealing ring, ensuring that the top of the sealing ring can still contact the positioning seat 122 or the mounting seat 102 after it is embedded in the groove. The inner wall and bottom surface of the groove are smoothed to avoid scratching the sealing ring; the center of the groove is coaxial with the center of the sealing cavity, ensuring that the sealing ring can be precisely aligned with components such as the fluid interface and the positioning platform 124 after installation. If the mounting seat 102 is also provided with a positioning structure 126, it is an annular boss coaxial with the groove of the base 100. The size of the boss is matched with the groove. When the mounting seat 102 is closed, the boss is embedded above the groove, further restricting the radial movement of the sealing ring and forming a double positioning.

[0060] The annular groove restricts the radial movement and circumferential rotation of the sealing ring, preventing it from shifting, twisting, or misaligning during installation. This ensures the sealing ring remains centered within the sealing cavity, precisely aligned with the positioning platform 124 and the fluid interface, preventing seal failure or data distortion due to positioning deviations. The groove's guiding function eliminates the need for repeated adjustments; simply placing the sealing ring into the groove completes the positioning process, reducing installation time. This is particularly suitable for rapid sealing ring replacement in batch testing scenarios, improving overall testing efficiency. By using positioning grooves / protrusions of different sizes on the base 100 or mounting bracket 102, sealing rings with different inner and outer diameters can be accommodated without redesigning the entire fixture, improving equipment versatility and reducing testing costs.

[0061] A second aspect of this utility model provides a device for detecting sealing rings, including the disassembly and positioning fixture for detecting sealing rings as described above.

[0062] The second aspect of this utility model provides a testing device for sealing rings. By setting the above-mentioned disassembly and assembly positioning fixture for sealing ring testing, it is suitable for batch sealing ring testing scenarios. It can effectively reduce disassembly and assembly time, improve the batch testing efficiency of sealing rings, and at the same time, ensure safety performance under high pressure testing scenarios.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A disassembly and positioning fixture for testing sealing rings, characterized in that, include: Base (100); Mounting base (102) is used to mate with the base (100) to form a sealing cavity for receiving a sealing ring; A locking assembly, the locking assembly including a locking bolt rotatable about its own axis, the locking bolt being detachably connected to the base (100). The mounting base (102) is provided with a limiting hole (104) corresponding to the locking bolt. The locking bolt has a connecting portion (106) and a locking portion (108), the locking bolt being adapted to switch between a first position and a second position, in the first position the locking portion (108) being adapted to pass through the limiting hole (104), from the first position to the second position the connecting portion (106) being adapted to pass through the limiting hole (104), in the second position the locking portion (108) being adapted to interfere with the end face of the limiting hole (104) to lock the mounting base (102) on the base (100).

2. The dismounting and positioning jig for detecting a seal ring according to claim 1, characterized in that, The locking bolt also includes a central rod portion (110), and the connecting portion (106) and the locking portion (108) are formed at both ends of the central rod portion (110).

3. The dismounting and positioning jig for detecting a seal ring according to claim 2, characterized in that, The connecting part (106) has a first surface (112), and the locking part (108) has a second surface (114). Along the axial direction of the central rod part (110), the first surface (112) and the second surface (114) are respectively in different planes.

4. The dismounting and positioning jig for detecting a seal ring according to claim 2, characterized in that, The locking bolt is rotatably mounted to the base (100) via a hinge (116).

5. The dismounting and positioning jig for detecting a seal ring according to claim 4, characterized in that, The axis of rotation of the hinge (116) is perpendicular to the surface of the base (100).

6. The dismounting and positioning jig for detecting a seal ring according to claim 2, wherein The locking assembly also includes a handle (118), which, in the second position, is used to connect to the locking part (108) and / or the center rod part (110) to lock the mounting base (102) to the base (100).

7. The dismounting and positioning jig for seal ring inspection according to any one of claims 1 to 6, characterized in that, The disassembly and positioning fixture for sealing ring testing also includes a locking pin (120) and a positioning seat (122). The locking pin (120) is detachably connected to the base (100), and the positioning seat (122) is located between the mounting seat (102) and the base (100). In the second position, the locking pin (120) is used to lock the base (100) and the positioning seat (122).

8. The dismounting and positioning jig for detecting a seal ring according to claim 7, wherein The positioning seat (122) has a positioning platform (124) for positioning the sealing ring.

9. The dismounting and positioning jig for detecting a seal ring according to any one of claims 1 to 6, characterized in that, At least one of the base (100) and the mounting base (102) has a positioning structure (126) for positioning the sealing ring.

10. A detection device for sealing rings, characterized in that, Includes the disassembly and positioning fixture for testing sealing rings as described in any one of claims 1 to 9.

Images