Valve pressure detection device and clamping structure

Abstract

The utility model provides a valve pressure detection device and a clamping structure, and the device comprises a clamping assembly which is installed at the top of a detection platform, the clamping assembly comprises a clamping flange used for being in butt joint with a flange at the bottom of a valve to be detected, and an annular area, close to the circle center, of the top of the clamping flange is recessed downwards to form a first butt joint groove; and the inner side of the butt joint groove I is glued with a sealing member I used for sealing. Compared with the prior art, the valve bottom flange detection device has the following beneficial effects that through the arrangement of the clamping assembly, six fixing bolts I are respectively in butt joint with six fixing holes formed in the bottom of a bottom flange of a valve to be detected, and the tops of the fixing bolts I are fixed through nuts I; and when the valves to be detected need to be replaced, the first group of valves to be detected are taken down, and the second group of valves to be detected and the clamping flange are mounted and fixed according to the steps, so that the final effect is that the valves to be detected with different sizes can be clamped, and the detection efficiency is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of detection devices, and specifically relates to a valve pressure detection device and clamping structure. Background Technology

[0002] A valve pressure testing device is a specialized instrument used to test the sealing performance, strength, and overall performance of valves under specific pressure conditions. Its core function is to detect leaks, deformation, or functional failures in valves by simulating actual operating pressure (liquid or gas). The clamping structure is a crucial component connecting the valve and the testing device, and it must be adaptable to different valve types and interface configurations. Existing clamping structures are typically designed individually for different valve sizes and interfaces. This often results in the clamp only being able to hold one type of valve at a time, leading to time and effort required for clamp changes and significantly reducing testing efficiency. Therefore, a new structure is proposed to address these issues. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a valve pressure detection device and clamping structure to solve the problems mentioned in the background art.

[0004] This utility model is achieved through the following technical solution: a valve pressure detection device and clamping structure, comprising: a clamping assembly, wherein the clamping assembly is installed on the top of the detection table, and the clamping assembly includes a clamping flange for docking with the bottom flange of the valve to be tested;

[0005] The top of the clamping flange has an annular area near the center that is recessed downward to form a mating groove 1. A sealing element 1 for sealing is glued to the inside of the mating groove 1. A mating groove 2 is opened on the outside of the mating groove 1. A sealing element 2 for sealing is glued to the inside of the mating groove 2.

[0006] In a preferred embodiment, the clamping assembly is provided with several groups of the same specifications at equal intervals, and a sealing cavity is provided inside the detection table below the clamping assembly, with a vent pipe passing through the front side of the sealing cavity.

[0007] A horizontally movable testing mechanism is installed at the rear of the testing platform. The testing mechanism includes a testing head, an air pump, and an air storage tank. The testing head is installed on the outside of the slide rail at its rear. Below the testing head is a mounting flange for docking with the top flange of the valve under test. A pressure sensor is installed inside the testing head. The top flange of the valve under test docks with the mounting flange below the testing head. The testing head can dock with the top flange of the valve under test by moving left and right and up and down. A mating ring is glued to the lower surface of the bottom flange of the valve under test. The size of the mating ring changes according to the size of the valve under test. That is, when the size of the valve under test is small, the mating ring is inside the first mating groove. When the size of the valve under test is large, the mating ring is inside the second mating groove.

[0008] In a preferred embodiment, the clamping assembly communicates with the sealing cavity below, and six fixing bolts are equidistantly provided on the lower inner surface of the mating groove. The bottom of the sealing element has six mating holes that match the diameter of the fixing bolts at equal intervals, and the top of the fixing bolts is fixed by a nut.

[0009] In a preferred embodiment, the radius of the second docking groove is greater than that of the first docking groove, and six fixing bolts are provided at equal intervals on the lower inner surface of the second docking groove.

[0010] The bottom of the second sealing element has six mating holes that match the diameter of the second fixing bolt. The top of the second fixing bolt is fixed by a nut. The second fixing bolt has the same specifications as the first fixing bolt.

[0011] In a preferred embodiment, the radius and width of the first seal are matched with the radius and width of the first mating groove, and the radius and width of the second seal are matched with the radius and width of the second mating groove.

[0012] In a preferred embodiment, the top of the first seal is recessed downward to form a clamping groove, the width of the top of the clamping groove is greater than the width of its inner lower surface, and the first seal and the second seal have the same structure but different specifications.

[0013] In a preferred embodiment, the first seal and the second seal have the same height, and both the first seal and the second seal are made of flexible rubber. The first seal and the second seal have the same structure but different specifications, so the sealing methods between them are exactly the same.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are as follows: 1. By setting a clamping assembly, the clamping assembly includes a mating groove one and a sealing element one. A mating groove two is opened on the outer side of the mating groove one. The radius of the mating groove two is greater than the radius of the mating groove one. Six fixing bolts one are evenly spaced on the lower inner surface of the mating groove one, and six fixing bolts two are evenly spaced on the lower surface of the mating groove two. When in use, the flange at the bottom of the valve to be tested is aligned with the clamping flange, so that the six fixing bolts one pass upward through the six fixing holes opened at the bottom of the flange at the bottom of the valve to be tested. At this time, the bottom of the valve to be tested... The mating ring bonded to the lower surface of the flange is located inside the mating groove one. Then, it is fixed at the top of the fixing bolt one with the nut one, thus completing the installation of the valve to be tested. When the valve to be tested needs to be replaced after the test is completed, remove the first set of valves to be tested, then pick up the second set of valves to be tested, and install and fix the second set of valves to be tested to the clamping flange according to the above steps, so that the mating ring bonded to the bottom of the second set of valves to be tested is located inside the mating groove two. Therefore, the final effect is that valves of different sizes can be clamped without replacing the clamping assembly, which greatly improves the efficiency of the test.

[0015] 2. By setting up sealing element one and sealing element two, sealing element one and sealing element two have the same structure but different specifications. Sealing element one is located inside the mating groove one, and sealing element two is located inside the mating groove two. Sealing element one has a clamping groove one on its top. The longitudinal section of clamping groove one is an inverted trapezoidal structure. Both sealing element one and sealing element two are made of flexible rubber. When in use, when the mating ring is inside the mating groove one, the bottom of the mating ring one contacts the upper inner side of the clamping groove one. As the flange at the bottom of the valve to be tested is installed and fixed to the clamping flange, the mating ring moves from the upper inner side of the clamping groove one downwards. Therefore, the inner side of the clamping groove one can be gradually squeezed tightly with the outer side of the mating ring, thereby significantly improving the sealing performance between the valve to be tested and the clamping flange, and thus improving the accuracy of the test. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a valve pressure detection device and clamping structure according to the present invention.

[0018] Figure 2 This is a schematic diagram of the clamping components in the valve pressure detection device and clamping structure of this utility model.

[0019] Figure 3 This is a schematic diagram showing the positions of fixing bolt one and fixing bolt two in a valve pressure detection device and clamping structure according to this utility model.

[0020] Figure 4 This is a cross-sectional view of a sealing element in a valve pressure detection device and clamping structure according to this utility model.

[0021] In the diagram, 100 represents the testing station;

[0022] 200-Clamping assembly, 210-Clamping flange, 220-Matching groove one, 221-Fixing bolt one, 230-Matching groove two, 231-Fixing bolt two, 240-Seal one, 241-Clamping groove, 250-Seal two. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only one aspect of the present utility model, and not all aspects. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0024] Please see Figures 1 to 4 A valve pressure testing device and clamping structure, comprising: a clamping assembly 200, the clamping assembly 200 being mounted on the top of a testing table 100, the clamping assembly 200 including a clamping flange 210 for docking with the bottom flange of the valve to be tested;

[0025] The top of the clamping flange 210 has an annular area near the center that is recessed downward to form a mating groove 220. A sealing element 240 for sealing is glued to the inside of the mating groove 220. A second mating groove 230 is opened on the outside of the mating groove 220. A second sealing element 250 for sealing is glued to the inside of the second mating groove 230.

[0026] The clamping assembly 200 is provided with several sets of the same specifications at equal intervals. The detection table 100 below the clamping assembly 200 has a sealed cavity inside, and a vent pipe is provided through the front side of the sealed cavity.

[0027] A horizontally movable testing mechanism is installed on the rear side of the testing platform 100. The testing mechanism includes a testing head, an air pump, and an air storage tank. The testing head is installed on the outside of the slide rail on its rear side. Below the testing head is a mounting flange for docking with the top flange of the valve under test. A pressure sensor is installed inside the testing head. The top flange of the valve under test docks with the mounting flange below the testing head. The testing head can dock with the top flange of the valve under test by moving left and right and up and down. A mating ring is glued to the lower surface of the bottom flange of the valve under test. The size of the mating ring changes with the size of the valve under test. That is, when the size of the valve under test is small, the mating ring is inside the mating groove 220. When the size of the valve under test is large, the mating ring is inside the mating groove 230.

[0028] The clamping assembly 200 is connected to the sealing cavity below. Six fixing bolts 221 are equidistantly provided on the lower inner surface of the mating groove 220. Six mating holes matching the diameter of the fixing bolts 221 are equidistantly provided at the bottom of the sealing component 240. The top of the fixing bolts 221 is fixed by nuts.

[0029] The radius of the second docking groove 230 is greater than that of the first docking groove 220, and six fixing bolts 231 are provided at equal intervals on the lower inner surface of the second docking groove 230.

[0030] The bottom of the second seal 250 has six mating holes that match the diameter of the second fixing bolt 231. The top of the second fixing bolt 231 is fixed by a nut. The second fixing bolt 231 has the same specifications as the first fixing bolt 221.

[0031] The radius and width of seal 1 240 match the radius and width of mating groove 1 220, and the radius and width of seal 2 250 match the radius and width of mating groove 2 230.

[0032] The top of seal 240 is recessed downward to form a clamping groove 241. The width of the top of the clamping groove 241 is greater than the width of its inner lower surface. Seal 240 and seal 250 have the same structure but different specifications.

[0033] The height of seal 240 and seal 250 is the same. Both seal 240 and seal 250 are made of flexible rubber. The structures of seal 240 and seal 250 are the same but the specifications are different. Therefore, the sealing methods between the two are exactly the same.

[0034] Example 1: Please refer to Figures 1 to 3In actual use, the top of the testing table 100 is equipped with several sets of clamping assemblies 200 of the same specifications, equidistant from left to right. Each set of clamping assemblies 200 has a sealed cavity inside the testing table 100. A vent pipe runs through the front of the sealed cavity for venting after testing. A testing mechanism is installed at the rear of the testing table 100. The testing mechanism includes a testing head, an air pump, and an air tank. The testing head is mounted on the outside of a slide rail at its rear. The slide rail drives the testing head to move horizontally, while the testing head itself has the ability to move vertically. Below the testing head is a flange for contact with the top flange of the valve to be tested. The mounting flange is connected to the test head, which is equipped with a pressure sensor. The bottom flange of the valve under test is glued with a mating ring. The top of the mating ring is provided with six fixing holes. The clamping assembly 200 includes a clamping flange 210. The top of the clamping flange 210 is provided with a mating groove 220 near the center of the annular area. A mating groove 230 is provided on the outside of the mating groove 220. The radius of the mating groove 220 is smaller than the radius of the mating groove 230. Six fixing bolts 221 are provided at equal intervals on the lower inner surface of the mating groove 220 and six fixing bolts 231 are provided at equal intervals on the lower inner surface of the mating groove 230.

[0035] In actual use, the valve to be tested is picked up. First, the six fixing holes on the lower surface of the bottom flange of the valve to be tested are inserted downwards along the six fixing bolts 221, so that the mating ring is placed downwards into the mating groove 220. Then, the six nuts are threadedly connected to the fixing bolts 221 to fix the bottom flange of the valve to be tested to the clamping flange 210. Then, the detection head is moved so that the mounting flange below the detection head is installed and fixed to the top flange of the valve to be tested. The clamping and fixing of the valve to be tested is then completed. High-pressure gas is injected into the valve to be tested through the detection mechanism. The high-pressure gas enters the sealing cavity through the clamping assembly 200 and is temporarily stored. The pressure sensor inside the detection head senses the pressure change, so the pressure of the valve to be tested can be detected (the detection mechanism is existing technology, and its internal structure and working principle will not be described in detail here).

[0036] After the test is completed, the internal gas is discharged through the vent pipe. Then, the valve to be tested is removed by reversing the above steps. The second set of valves to be tested with different radii and lengths is picked up and installed on the clamping assembly 200 using the same steps. The difference is that the mating ring glued to the lower surface of the bottom flange of the second set of valves to be tested is located inside the mating groove 230. Six fixing bolts 231 are passed through the fixing holes opened on the lower surface of the bottom flange of the second set of valves to be tested. Then, the top of the fixing bolts 231 is fixed with nuts 2, thus completing the replacement of the valve to be tested. Therefore, the final effect is that by setting the mating groove 1 220 and the mating groove 230, valves to be tested of different sizes can be clamped without replacing the clamping assembly 200, thus greatly improving the efficiency of replacing the valves to be tested, and thus improving the testing efficiency.

[0037] Example 2: Please refer to Figure 2 and Figure 4 A first seal 240 is glued to the inner side of the first mating groove 220, and a second seal 250 is glued to the inner side of the second mating groove 230. The first seal 240 and the second seal 250 have the same structure but different specifications. The specifications of the first seal 240 match the specifications of the inner side of the first mating groove 220, and the specifications of the second seal 250 match the specifications of the inner side of the second mating groove 230. Since the first seal 240 and the second seal 250 have the same structure but different specifications, only the first seal 240 will be described here. The top of the first seal 240 is recessed downwards to form a clamping groove 241. The width of the top of the clamping groove 241 is greater than the width of its inner lower surface, thus making the clamping groove 241... 1. It has an inverted trapezoidal structure. When the bottom flange of the valve under test is above the clamping flange 210 and the two are not fixed, the mating ring is located above the inner side of the clamping groove 241. After the bottom flange of the valve under test and the clamping flange 210 are installed and fixed, the distance between the bottom flange of the valve under test and the clamping flange 210 is shortened. Therefore, the mating ring moves downward along the inner side of the clamping groove 241. Since the width of the top of the clamping groove 241 is greater than the width of its inner lower surface, the clamping force between the two sides of the clamping groove 241 and the outer side of the mating ring gradually increases. This can greatly improve the sealing performance between the valve under test and the clamping assembly 200, thereby helping to improve the accuracy of pressure detection.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A valve pressure detection device and clamping structure, comprising: The clamping assembly (200) is characterized in that: the clamping assembly (200) is installed on the top of the testing table (100), and the clamping assembly (200) includes a clamping flange (210) for docking with the bottom flange of the valve to be tested; The top of the clamping flange (210) has an annular area near the center that is recessed downward to form a mating groove 1 (220). A sealing element 1 (240) for sealing is glued to the inside of the mating groove 1 (220). A mating groove 2 (230) is provided on the outside of the mating groove 1 (220). A sealing element 2 (250) for sealing is glued to the inside of the mating groove 2 (230).

2. The valve pressure detection device and clamping structure as described in claim 1, characterized in that: The clamping assembly (200) is provided with several sets of the same specifications at equal intervals. The detection table (100) below the clamping assembly (200) is provided with a sealed cavity. A vent pipe is provided through the front side of the sealed cavity. The detection platform (100) is equipped with a horizontally movable detection mechanism on its rear side. The detection mechanism includes a detection head, an air pump, and an air storage tank. The detection head is installed on the outside of the slide rail on its rear side. A mounting flange for docking with the top flange of the valve to be tested is provided below the detection head. A pressure sensor is provided inside the detection head.

3. The valve pressure detection device and clamping structure as described in claim 2, characterized in that: The clamping assembly (200) is connected to the sealing cavity below. Six fixing bolts (221) are provided at equal intervals on the lower inner surface of the mating groove (220). Six mating holes matching the diameter of the fixing bolts (221) are provided at equal intervals at the bottom of the sealing element (240). The top of the fixing bolts (221) is fixed by nuts.

4. The valve pressure detection device and clamping structure as described in claim 1, characterized in that: The radius of the second docking groove (230) is greater than that of the first docking groove (220), and six fixing bolts (231) are provided at equal intervals on the lower inner surface of the second docking groove (230). The bottom of the second sealing element (250) has six mating holes that match the diameter of the second fixing bolt (231). The top of the second fixing bolt (231) is fixed by a nut. The second fixing bolt (231) has the same specifications as the first fixing bolt (221).

5. The valve pressure detection device and clamping structure as described in claim 3, characterized in that: The radius and width of the first seal (240) match the radius and width of the first mating groove (220), and the radius and width of the second seal (250) match the radius and width of the second mating groove (230).

6. The valve pressure detection device and clamping structure as described in claim 5, characterized in that: The top of the first seal (240) is recessed downward to form a clamping groove (241). The width of the top of the clamping groove (241) is greater than the width of its inner lower surface. The first seal (240) and the second seal (250) have the same structure but different specifications.

7. The valve pressure detection device and clamping structure as described in claim 6, characterized in that: The first seal (240) and the second seal (250) have the same height, and both the first seal (240) and the second seal (250) are made of flexible rubber.

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