A small pump body rapid pressure test tool

Abstract

The application discloses a small pump body rapid pressure test tool, and relates to the technical field of fluid machinery testing, which comprises a large end plate and a small end plate arranged on opposite end surfaces of a pump body, opposite sides of the pump body are formed with a large port and a small port, a locking piece is arranged between the large end plate and the small end plate, one end of the locking piece pulls the large end plate to block the large port, the other end of the locking piece pulls the small end plate to block the small port, a water inlet and a water outlet are formed on the pump body, the water inlet and the water outlet of the pump body are connected with a gas supply device through pipelines, and the pump body is placed in a water tank. The application can quickly install and dismount the large end plate and the small end plate by using one locking piece, adopts a gas test, and after the test is completed, no water remains in the inner cavity of the pump body, and the inner cavity of the pump body does not need to be dried, so that the working efficiency of the small pump body pressure test is greatly improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of fluid machinery testing, in particular to a small pump body rapid pressure test tool. BACKGROUND

[0002] Small pump body pressure test is a core process for testing pump body strength and sealing performance. Through liquid pressure test, working pressure or even higher pressure is simulated to strictly test the pressure bearing capacity and sealing quality of the pump body, so that no leakage is ensured. In order to improve the pressure test efficiency, a special pressure test tool is generally used.

[0003] At present, the pump body test tool is composed of two end plates, two openings are formed on the two sides of the pump body, the two end plates are installed at the two openings of the pump body, 12-14 bolts are arranged on the end plates at equal intervals along the axial direction of the end plates, and the end plates are fixed on the pump body through the bolts. After the two end plates are fixed, the pump cavity is filled with water, air is completely discharged, the pressure is slowly increased to the specified test pressure, and the pressure is maintained for a specified time. Whether the pressure display number is stable is observed, and whether there is leakage or sweating phenomenon on the surface of each pump body is carefully checked. After the pressure test is qualified, the pressure is slowly released, the end plates are disassembled, and the residual water in the pump body is blown dry, and finally the pump body completing the test is assembled.

[0004] When the end plates are installed and disassembled, a plurality of bolts need to be locked or loosened one by one, and this process takes a long time. At the same time, after the test is completed, the residual water in the pump body needs to be blown dry, which reduces the working efficiency of the small pump body pressure test. SUMMARY

[0005] In order to improve the working efficiency of the small pump body pressure test, the application provides a small pump body rapid pressure test tool.

[0006] The small pump body rapid pressure test tool provided by the application adopts the following technical scheme:

[0007] A small pump body rapid pressure test tool, comprising a large end plate and a small end plate arranged on opposite end faces of a pump body, wherein opposite sides of the pump body form a large port and a small port respectively, a locking piece is arranged between the large end plate and the small end plate, one end of the locking piece pulls the large end plate to block the large port, the other end of the locking piece pulls the small end plate to block the small port, a water inlet and a water outlet are formed on the pump body, the water inlet and the water outlet of the pump body are connected with a gas supply device through pipelines, and the pump body is placed in a water tank.

[0008] By adopting the technical scheme, when the pump body is pressure tested, the large end plate and the small end plate are placed at the large port and the small port of the pump body respectively, and then the locking member is used to connect and lock the large end plate and the small end plate, so that the large end plate blocks the large port and the small end plate blocks the small port. The pipeline of the gas supply equipment is connected with the water inlet and the water outlet of the pump body, and then the pump body is placed in the water tank. The gas supply equipment injects high-pressure gas into the inner cavity of the pump body. Whether the pump body leaks is determined by observing whether bubbles appear on the surface of the pump body. In this way, one locking member can be used to quickly install and dismount the large end plate and the small end plate. The air test is adopted. After the test is completed, the inner cavity of the pump body does not need to be dried, and the working efficiency of the pressure test of the small pump body is greatly improved.

[0009] Preferably, a limiting ring groove is formed on the side wall of the large end plate close to the pump body, the end face at the large port of the pump body is located in the limiting ring groove, a limiting inner ring is formed on the end face of the small port of the pump body, and a limiting outer ring is formed on the side wall of the small end plate close to the pump body. The inner circumferential wall of the limiting outer ring abuts against the outer circumferential wall of the limiting inner ring.

[0010] By adopting the technical scheme, when the large end plate and the small end plate are installed, the limiting ring groove of the large end plate is matched with the end face at the large port of the pump body, and the limiting outer ring of the small end plate is matched with the limiting inner ring of the pump body, so that the large end plate and the small end plate can be quickly aligned.

[0011] Preferably, a first sealing member is embedded on the side wall of the limiting ring groove of the large end plate, the first sealing member abuts against the pump body, a second sealing member is embedded on the side wall of the limiting outer ring close to the pump body, and the second sealing member abuts against the pump body.

[0012] By adopting the technical scheme, after the large end plate and the small end plate are connected and locked by the locking member, the first sealing member blocks the gap between the large end plate and the pump body, and the second sealing member blocks the gap between the small end plate and the pump body, so that the sealing effect of the pressure test tool is better.

[0013] Preferably, the locking member comprises a head, a first locking rod and a first locking sleeve. The first locking sleeve is fixedly arranged at the middle part of the side wall of the large end plate close to the small end plate. The first locking rod is threadedly arranged in the first locking sleeve. One end of the first locking rod away from the first locking sleeve penetrates the small end plate. The head is fixedly arranged at the end of the first locking rod away from the first locking sleeve. A first internal hexagonal groove is formed on the side wall of the head away from the first locking rod. The head abuts against the side wall of the small end plate away from the large end plate.

[0014] By adopting the technical scheme, when the large end plate and the small end plate are locked, the first locking rod is first inserted into the small end plate and the end of the first locking rod is entered into the first locking sleeve, then the end is rotated by using the wrench through the first internal hexagonal groove, the end drives the first locking rod to rotate and the first locking rod is rotated into the first locking sleeve, so that the large end plate and the small end plate can be fixed on the pump body.

[0015] Preferably, a third sealing member is embedded on the side wall of the small end plate away from the large end plate, and the third sealing member abuts against the end.

[0016] By adopting the technical scheme, after the large end plate and the small end plate are locked by the locking member, the end abuts against the third sealing member, and the third sealing member seals the gap between the small end plate and the first locking rod, so that the sealing effect of the pressure test tool is better.

[0017] Preferably, the locking member comprises a second locking rod and a second locking sleeve, the second locking rod is fixedly arranged on the side wall of the small end plate close to the large end plate, the second locking sleeve is fixedly arranged on the side wall of the large end plate close to the small end plate, the second locking rod is threadedly arranged in the second locking sleeve, and the second internal hexagonal groove is formed in the side wall of each of the large end plate and the small end plate away from each other.

[0018] By adopting the technical scheme, when the large end plate and the small end plate are locked, the end of the second locking rod is first inserted into the second locking sleeve, then the large end plate and the small end plate are reversely rotated by using the wrench through the second internal hexagonal groove, and the second locking rod is rotated into the second locking sleeve, so that the large end plate and the small end plate can be fixed on the pump body.

[0019] Preferably, the first sealing member and the second sealing member are both provided with a deformation ring cavity, the first clamping assembly is arranged in the large end plate, and the second clamping assembly is arranged in the small end plate, when the air pressure in the inner cavity of the pump body is increased, the first clamping assembly clamps the first sealing member to deform and improve the sealing effect of the first sealing member, and the second clamping assembly clamps the second sealing member to deform and improve the sealing effect of the second sealing member.

[0020] By adopting the technical scheme, when the pump body leaks at the large end plate or the small end plate, it is difficult to determine whether the seal at the large end plate or the small end plate leaks or the pump body itself leaks, at this time, the air pressure in the pump body is gradually increased, the first clamping assembly and the second clamping assembly clamp the first sealing member and the second sealing member, the first sealing member and the second sealing member deform under the action of the deformation ring cavity, so that the sealing effect of the first sealing member and the second sealing member is improved, at this time, the density of the bubbles at the leakage is observed, if the bubbles gradually become sparse, it is the seal at the large end plate or the small end plate that leaks, if the bubbles gradually become dense, it is the pump body itself that leaks.

[0021] Preferably, the first clamping assembly comprises a first piston ring, a first clamping ring, a second clamping ring, a plurality of first push blocks, a second push block, a third push block and a first elastic member, the first piston ring is slidingly arranged on the side wall of the large end plate close to the small end plate, the plurality of second push blocks and third push blocks are fixedly arranged on the side wall of the first piston ring close to the first sealing member, the second push block is located outside the third push block, the first clamping ring and the second clamping ring are located on both sides of the first sealing member along the radial direction of the large end plate, the first clamping ring is fixedly connected with the side of the second push block away from the first piston ring, the plurality of first push blocks are slidingly arranged in the large end plate along the radial direction of the large end plate, the plurality of first push blocks are equidistantly arranged along the circumferential direction of the large end plate, and the two ends of the first push block are respectively abutted with the third push block and the second clamping ring. A plurality of first elastic members are arranged in the large end plate and abutted with the end of the plurality of first push blocks close to the second clamping ring.

[0022] By adopting the above technical scheme, when pressure test detection is performed at a conventional gas pressure, the plurality of first elastic members act on the first piston ring through the first push block and the third push block, so that the first piston ring does not move, when the gas pressure in the pump body cavity increases, the thrust of the gas pressure acting on the first piston ring is gradually greater than the elastic force of the first elastic member, at this time, the first piston ring slides towards the inside of the large end plate, the first piston ring drives the second push block and the third push block to move, the second push block drives the first clamping ring to move, and the third push block drives the second clamping ring to move through the plurality of first push blocks, so that the first clamping ring and the second clamping ring clamp the first sealing member, thereby improving the sealing effect of the first sealing member.

[0023] Preferably, the second clamping assembly comprises a second piston ring, a first push ring, a second push ring, a plurality of fourth push blocks, a push rod, a second elastic member, a first clamping plate and a second clamping plate, the second piston ring is slidingly arranged on the side wall of the small end plate close to the large end plate, the fourth push block is fixedly arranged on the side wall of the second piston ring away from the large end plate, the push rod is slidingly arranged in the small end plate along the radial direction of the small end plate, the plurality of push rods are equidistantly arranged along the circumferential direction of the small end plate, one end of the plurality of push rods is abutted with the fourth push block, the plurality of second elastic members are arranged in the small end plate and abutted with the other end of the plurality of push rods, the first push ring and the second push ring are slidingly arranged in the small end plate, the first push ring is located outside the second push ring, one end of the first push ring and the second push ring is inserted into the plurality of push rods, and the first clamping plate and the second clamping plate are slidingly arranged on both sides of the second sealing member along the radial direction of the small end plate. The plurality of first clamping plates are located on the outer circumferential side of the second sealing member and abutted with the other end of the first push ring, and the plurality of second clamping plates are located on the inner circumferential side of the second sealing member and abutted with the other end of the second push ring.

[0024] By adopting the above technical solution, during conventional air pressure testing, multiple second elastic elements act on the second piston ring through push rods and the first push ring, preventing the second piston ring from moving. When the air pressure in the pump body cavity increases, the thrust of the air pressure on the second piston ring gradually exceeds the elastic force of the second elastic elements. At this time, the second piston ring slides towards the small end plate, and the second piston ring drives multiple fourth push blocks to move. The fourth push blocks drive the first push ring and the second push ring to move through multiple push rods. The first push ring and the second push ring drive multiple first clamping plates and the second clamping plates to move towards the second seal, so that the multiple first clamping plates and the multiple second clamping plates clamp the second seal, thereby improving the sealing effect of the second seal.

[0025] Preferably, both the first and second sealing elements are sealing airbags. A first vent pipe is provided inside the large end plate, with one end of the first vent pipe communicating with the inner cavity of the pump body and the other end communicating with the first sealing element. A second vent pipe is provided inside the small end plate, with one end of the second vent pipe communicating with the inner cavity of the pump body and the other end communicating with the second sealing element.

[0026] By adopting the above technical solution, when the conventional air pressure is tested, the gas in the pump body enters the first and second sealing elements through the first and second vent pipes. The first and second sealing elements expand and seal. When the air pressure in the pump body cavity increases, the first and second sealing elements expand further, improving the sealing effect of the first and second sealing elements. This makes it easier to determine whether the leakage is at the seal of the large end plate or the small end plate, or whether the leakage is in the pump body itself.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The large and small end plates can be quickly installed and removed using a single locking component. After the air pressure test is completed, no moisture remains in the pump body cavity, eliminating the need to dry the pump body cavity, thus greatly improving the working efficiency of pressure testing of small pump bodies.

[0029] 2. When installing the large end plate and the small end plate, the limiting ring groove of the large end plate mates with the end face at the large port of the pump body, and the limiting outer ring of the small end plate mates with the limiting inner ring of the pump body. This facilitates quick alignment of the large end plate and the small end plate. After the large end plate and the small end plate are connected and locked using locking components, the first sealing component seals the gap between the large end plate and the pump body, and the second sealing component seals the gap between the small end plate and the pump body, thereby improving the sealing effect of the pressure testing fixture.

[0030] 3. When the pump body is located at the large end plate or the small end plate and a leakage occurs, it is difficult to determine whether the seal at the large end plate or the small end plate leaks or the pump body itself leaks. At this time, the air pressure in the pump body is gradually increased, the first clamping assembly and the second clamping assembly clamp the first seal and the second seal, the first seal and the second seal are deformed under the action of the deformation ring cavity, so that the sealing effect of the first seal and the second seal is improved, and then the density of the bubbles at the leakage is observed. If the bubbles gradually become sparse, it is the seal at the large end plate or the small end plate that leaks, and if the bubbles gradually become dense, it is the pump body itself that leaks. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a schematic view of the overall structure of the small pump body rapid pressure test tool in Example 1 of the application.

[0032] Figure 2 It is a sectional view of the overall structure of the small pump body rapid pressure test tool in Example 1 of the application.

[0033] Figure 3 It is a sectional view of the overall structure of the small pump body rapid pressure test tool in Example 2 of the application.

[0034] Figure 4 It is a sectional view of the overall structure of the small pump body rapid pressure test tool in Example 3 of the application.

[0035] Figure 5 It is an enlarged view of A in the application. Figure 4

[0036] Figure 6 It is an enlarged view of B in the application. Figure 4

[0037] Figure 7 It is a schematic view of part of the structure of the small pump body rapid pressure test tool in Example 3 of the application.

[0038] Figure 8 It is a schematic view of part of the structure of the small pump body rapid pressure test tool in Example 3 of the application.

[0039] ​​The drawings are as follows: 1, pump body; 2, large end plate; 3, small end plate; 4, large port; 5, small port; 6, locking piece; 601, end head; 602, first locking rod; 603, first locking sleeve; 604, second locking rod; 605, second locking sleeve; 7, water inlet; 8, water outlet; 9, limiting ring groove; 10, limiting inner ring; 11, limiting outer ring; 12, first sealing piece; 13, second sealing piece; 14, third sealing piece; 15, first inner hexagonal groove; 16, second inner hexagonal groove; 17, deformation ring cavity; 18, first clamping assembly; 181, first piston ring; 182, second push block; 183, third push block; 184, first clamping ring; 185, second clamping ring; 186, first push block; 187, first elastic piece; 19, second clamping assembly; 191, second piston ring; 192, fourth push block; 193, first push ring; 194, second push ring; 195, push rod; 196, second elastic piece; 197, first clamping plate; 198, second clamping plate; 20, first air pipe; 21, second air pipe; 22, wedge-shaped groove. DETAILED DESCRIPTION

[0040] The drawings are as follows: Figures 1-8 The application is further described in detail.

[0041] The application discloses a small pump body rapid pressure test tool.

[0042] Embodiment 1:

[0043] Referring to Figure 1 and Figure 2 A small pump body rapid pressure test tool comprises a large end plate 2 and a small end plate 3 installed on both sides of a pump body 1, the two sides of the pump body 1 are formed with a circular large port 4 and a small port 5, and the large end plate 2 and the small end plate 3 are both circular and are installed on the large port 4 and the small port 5 respectively. The top of the pump body 1 is formed with a water inlet 7 and a water outlet 8, the water inlet 7 and the water outlet 8 of the pump body 1 are connected with a gas supply device through pipelines, and the pump body 1 is placed in a water tank.

[0044] The large end plate 2 is provided with a limiting ring groove 9 on the outer circumferential side close to the side wall of the pump body 1, and one end of the pump body 1 located at the large port 4 is located in the limiting ring groove 9. When the large end plate 2 is installed at the large port 4 of the pump body 1, the large end plate 2 is quickly positioned through the limiting ring groove 9, and the accuracy of installation of the large end plate 2 is improved.

[0045] The pump body 1 is integrally formed with a limiting inner ring 10 on the outer circumferential side of the small port 5, and the small end plate 3 is integrally formed with a limiting outer ring 11 on the side wall close to the pump body 1. When the small end plate 3 is installed at the small port 5 of the pump body 1, the limiting outer ring 11 is fitted on the outside of the limiting inner ring 10, and the accuracy of installation of the small end plate 3 is improved.

[0046] A locking member 6 is installed between the large end plate 2 and the small end plate 3, and the locking member 6 can fix the large end plate 2 and the small end plate 3 on the pump body 1. The locking member 6 comprises a head 601, a first locking rod 602 and a first locking sleeve 603. The first locking sleeve 603 is fixedly installed in the middle of the side wall of the large end plate 2 close to the small end plate 3, and the first locking rod 602 is slidably arranged through the middle of the small end plate 3. One end of the first locking rod 602 is threadedly installed in a first screw sleeve, and the head 601 is fixedly installed at the end of the first locking rod 602 away from the first locking sleeve 603. A first internal hexagonal groove 15 is formed in the side wall of the head 601 away from the first locking rod 602, and the head 601 abuts against the side wall of the small end plate 3 away from the large end plate 2.

[0047] When locking the large end plate 2 and the small end plate 3, first, the first locking rod 602 is inserted into the small end plate 3, and the end of the first locking rod 602 is preliminarily inserted into the first locking sleeve 603. Then, the first internal hexagonal groove 15 on the head 601 is clamped by a wrench, and the head 601 is rotated to drive the first locking rod 602 to rotate, so that the first locking rod 602 is gradually screwed into the inside of the first locking sleeve 603, thereby realizing reliable fixation of the large end plate 2 and the small end plate 3 on the pump body 1.

[0048] The first sealing member 12 is fixedly embedded on the side wall of the large end plate 2 in the limiting ring groove 9, and abuts against the large end plate 2 and the pump body 1. The second sealing member 13 is fixedly embedded on the side wall of the small end plate 3 close to the pump body 1 in the limiting outer ring 11, and abuts against the limiting outer ring 11 and the pump body 1. The third sealing member 14 is fixedly embedded on the side wall of the small end plate 3 away from the large end plate 2, and abuts against the head 601, the first locking rod 602 and the small end plate 3. In this application, the first sealing member 12, the second sealing member 13 and the third sealing member 14 can all be rubber sealing rings.

[0049] After the connection and locking of the large end plate 2 and the small end plate 3 are completed by the locking member 6, the first sealing member 12 effectively seals the gap between the large end plate 2 and the pump body 1, the second sealing member 13 effectively seals the gap between the small end plate 3 and the pump body 1, and the third sealing member 14 effectively seals the gap between the small end plate 3 and the locking member. Through the synergistic effect of the multi-stage sealing structure, the overall sealing performance of the pressure test tool is significantly improved.

[0050] The implementation principle of the small pump body rapid pressure test tool is as follows: when the pump body 1 is subjected to pressure test, first, the large end plate 2 and the small end plate 3 are positioned and installed at the large end port 4 and the small end port 5 of the pump body 1 respectively, then the locking piece 6 is used to connect and fasten the large end plate 2 and the small end plate 3, so that the large end plate 2 tightly closes the large end port 4 and the small end plate 3 effectively blocks the small end port 5. Then, the pipeline of the gas supply equipment is connected to the water inlet 7 and the water outlet 8 of the pump body 1 respectively, and the pump body 1 is completely immersed in the water tank. After the gas supply equipment is started, high-pressure gas is injected into the inner cavity of the pump body 1, and the operator observes whether there are continuous bubbles on the surface of the pump body 1, so as to judge the sealing performance of the pump body 1 and whether there is leakage. In this way, only one locking piece 6 is needed to realize the rapid assembly and disassembly of the large end plate 2 and the small end plate 3, which significantly simplifies the operation process; the gas pressure test method is used, and there is no liquid residue in the inner cavity of the pump body 1 after the test is completed, so the internal blow-drying process after the traditional water pressure test is saved, thereby greatly improving the efficiency of the pressure detection of the small pump body 1.

[0051] Embodiment 2:

[0052] With reference to Figure 3 The difference between the embodiment and the embodiment 1 is that the locking piece 6 comprises a second locking rod 604 and a second locking sleeve 605, the second locking rod 604 is fixedly installed in the middle part of the side wall of the small end plate 3 close to the large end plate 2, the second locking sleeve 605 is fixedly installed in the middle part of the side wall of the large end plate 2 close to the small end plate 3, and the second locking rod 604 is threadedly installed in the second locking sleeve 605. The middle part of the side wall of the large end plate 2 and the small end plate 3 away from each other is provided with a second internal hexagonal groove 16.

[0053] When the large end plate 2 and the small end plate 3 are locked, first, the end of the second locking rod 604 is aligned and inserted into the second locking sleeve 605. Then, the operator uses a wrench to be clamped into the second internal hexagonal groove 16, and rotates the large end plate 2 and the small end plate 3 in opposite directions by applying torque. Then the second locking rod 604 is gradually screwed into the second locking sleeve 605, thereby stably fixing the large end plate 2 and the small end plate 3 on the pump body 1.

[0054] The first sealing piece 12 and the second sealing piece 13 are both annular sealing air bags. The first air pipe 20 is installed in the large end plate 2, one end of the first air pipe 20 communicates with the inner cavity of the pump body 1, and the other end of the first air pipe 20 is connected with the first sealing piece 12 and communicates with the inner cavity of the first sealing piece 12. The second air pipe 21 is installed in the small end plate 3, one end of the second air pipe 21 communicates with the inner cavity of the pump body 1, and the other end of the second air pipe 21 is connected with the second sealing piece 13 and communicates with the inner cavity of the second sealing piece 13.

[0055] The implementation principle of the embodiment 2 of the present application is that when the pressure test is detected at a conventional air pressure, the gas in the pump body 1 is filled into the inside of the first sealing element 12 and the second sealing element 13 through the first vent pipe 20 and the second vent pipe 21 respectively, so that the first sealing element 12 and the second sealing element 13 are elastically expanded under the action of the air pressure, thereby realizing the close fitting with the contact surface and forming the preliminary sealing. If the leakage phenomenon is observed at the joint between the pump body 1 and the large end plate 2 or the small end plate 3, it is difficult to directly distinguish whether the leakage source is from the sealing failure of the end plate or the defect of the pump body 1. At this time, the air pressure in the inner cavity of the pump body 1 can be gradually increased. With the increase of the pressure, the first sealing element 12 and the second sealing element 13 are further expanded under the action of the higher air pressure, and the pressing force between them and the contact surface is increased, thereby significantly improving the sealing effect at this place.

[0056] On this basis, by observing the dense and sparse changes of the bubble generation at the leakage position, the leakage source can be distinguished: if the bubbles gradually become sparse, it indicates that the leakage rate slows down, which means that the leakage source is from the sealing of the large end plate 2 or the small end plate 3, and the sealing effect is enhanced with the increase of the pressure, resulting in the decrease of the leakage; if the bubbles gradually become dense, it indicates that the leakage is intensified, which means that there is a defect in the pump body 1, and the defect is further expanded under the high pressure, resulting in the increase of the leakage amount. This method combines the controllable pressure increase with the dynamic observation, effectively realizes the rapid and accurate judgment of the leakage source, and improves the reliability and diagnosis efficiency of the detection process.

[0057] Embodiment 3

[0058] With reference to Figure 4 , Figure 5 and Figure 6 , the difference between this embodiment and the embodiment 2 is that the first sealing element 12 and the second sealing element 13 are both selected as rubber sealing rings, and the deformation ring cavities 17 with circular cross sections are formed in the first sealing element 12 and the second sealing element 13. Under the action of the deformation ring cavities 17, the first sealing element 12 and the second sealing element 13 can be deformed after being extruded.

[0059] The first clamping assembly 18 is installed in the large end plate 2, and the second clamping assembly 19 is installed in the small end plate 3. When the air pressure in the water pump cavity is increased, the first clamping assembly 18 can clamp the first sealing element 12, and the second clamping assembly 19 can clamp the second sealing element 13.

[0060] After the first sealing element 12 is deformed by clamping, it abuts against the large end plate 2 and the pump body 1, thereby improving the sealing effect of the first sealing element 12. After the second sealing element 13 is deformed by clamping, it abuts against the small end plate 3 and the pump body 1, thereby improving the sealing effect of the second sealing element 13.

[0061] With reference to Figure 5 , Figure 7 and Figure 8Specifically, the first clamping assembly 18 comprises a first piston ring 181, a first clamping ring 184, a second clamping ring 185, twelve first push blocks 186, a second push block 182, a third push block 183 and a first elastic member 187. The first piston ring 181 is slidably installed in the sidewall of the large end plate 2 close to the small end plate 3 along the axial direction of the large end plate 2.

[0062] The twelve second push blocks 182 and the third push block 183 are fixedly installed on the sidewall of the first piston ring 181 away from the small end plate 3 along the circumferential direction of the first piston ring 181, and the second push block 182 is located on the outer side of the third push block 183. The first clamping ring 184 is fixedly installed at the end of the twelve second push blocks 182 away from the first piston ring 181, and is slidably installed in the large end plate 2 along the axial direction of the large end plate 2 and located on one side of the first sealing member 12.

[0063] The first push block 186 is slidably installed in the large end plate 2 along the radial direction of the large end plate 2, and the twelve first push blocks 186 are arranged at equal intervals along the circumferential direction of the large end plate 2. The twelve first push blocks 186 correspond to the twelve third push blocks 183 one by one, and the end of the first push block 186 and the end of the third push block 183 away from the first piston ring 181 are abutted by wedge surfaces.

[0064] The twelve first elastic members 187 are installed in the large end plate 2 at equal intervals along the circumferential direction of the large end plate 2 and correspond to the twelve first push blocks 186 one by one. One end of the first elastic member 187 abuts against the inner wall of the large end plate 2, and the other end abuts against the end of the first push block 186 away from the third push block 183. In this application, the first elastic member 187 can be selected as a spring.

[0065] The second clamping ring 185 is slidably installed in the large end plate 2 along the axial direction of the large end plate 2, and the second clamping ring 185 is located on the side of the first sealing member 12 away from the first clamping ring 184. The end of the twelve first push blocks 186 and the inner wall of the second clamping ring 185 are abutted by wedge surfaces.

[0066] During the conventional air pressure test process, the plurality of first elastic members 187 apply a force to the first piston ring 181 through the first push block 186 and the third push block 183, so that the first piston ring 181 remains fixed. As the air pressure in the inner cavity of the pump body 1 gradually rises, the air pressure thrust acting on the first piston ring 181 exceeds the elastic force of the first elastic member 187, and the first piston ring 181 begins to slide towards the inside of the large end plate 2. This movement drives the second push block 182 and the third push block 183 to move synchronously, and then the first clamping ring 184 is driven to move by the second push block 182, the third push block 183 moves the second clamping ring 185 through the first push block 186, and the first clamping ring 184 and the second clamping ring 185 move towards each other and clamp the first sealing member 12 together, thereby enhancing the sealing performance of the first sealing member 12.

[0067] With reference to Figure 6 , Figure 7 and Figure 8 , specifically, the second clamping assembly 19 comprises a second piston ring 191, a first push ring 193, a second push ring 194, twelve fourth push blocks 192, a push rod 195, a second elastic member 196, a first clamping plate 197 and a second clamping plate 198. The second piston ring 191 is slidingly installed in the side wall of the small end plate 3 close to the large end plate 2 along the axial direction of the small end plate 3. The twelve fourth push blocks 192 are fixedly installed on the side wall of the second piston ring 191 away from the large end plate 2 along the circumferential direction of the second piston ring 191 at equal intervals.

[0068] The push rod 195 is slidingly installed in the small end plate 3 along the radial direction of the small end plate 3. The twelve push rods 195 are arranged at equal intervals along the circumferential direction of the small end plate 3 and correspond to the twelve fourth push blocks 192 one by one. The end of the fourth push block 192 away from the second piston ring 191 and the end of the push rod 195 abut each other through a wedge surface.

[0069] The twelve second elastic members 196 are installed in the small end plate 3 at equal intervals along the circumferential direction of the small end plate 3 and correspond to the twelve push rods 195 one by one. One end of the second elastic member 196 abuts against the inner wall of the small end plate 3, and the other end abuts against the end of the push rod 195 away from the fourth push block 192. In this application, the second elastic member 196 can be selected as a spring.

[0070] Two wedge-shaped grooves 22 are formed on the side wall of each push rod 195 close to the large end plate 2. The first push ring 193 and the second push ring 194 are slidingly installed in the small end plate 3 along the axial direction of the small end plate 3. The first push ring 193 is located on the outer side of the second push ring 194. The ends of the first push ring 193 and the second push ring 194 are slidingly installed in the wedge-shaped grooves 22 of the push rod 195 through a wedge surface.

[0071] The first clamping plate 197 and the second clamping plate 198 are both arc-shaped plates. The first clamping plate 197 is slidingly installed in the small end plate 3 along the radial direction of the small end plate 3 and abuts against the outer side of the second sealing member 13. The second clamping plate 198 is slidingly installed in the small end plate 3 along the radial direction of the small end plate 3 and abuts against the inner side of the second sealing member 13. The twelve first clamping plates 197 and the twelve second clamping plates 198 are arranged at equal intervals along the circumferential direction of the small end plate 3 and correspond to each other one by one. The end of the first push ring 193 away from the push rod 195 and the end of the twelve first clamping plates 197 abut each other through a wedge surface. The end of the second push ring 194 away from the push rod 195 and the end of the twelve second clamping plates 198 abut each other through a wedge surface.

[0072] In the conventional air pressure test process, the plurality of second elastic members 196 apply force to the second piston ring 191 through the push rod 195 and the fourth push block 192, so that the second piston ring 191 is kept fixed. As the air pressure in the inner cavity of the pump body 1 gradually rises, the air pressure thrust acting on the second piston ring 191 exceeds the elastic force of the second elastic member 196, and the second piston ring 191 starts to slide towards the inside of the small end plate 3. This movement drives the fourth push block 192 to move, and the fourth push block 192 drives the push rod 195 to move, and the push rod 195 pushes the first push ring 193 and the second push ring 194 to move through the two wedge-shaped grooves 22, the first push ring 193 drives the twelve first clamping plates 197 to move, and the second push ring 194 drives the twelve second clamping plates 198 to move, and the first clamping plates 197 and the second clamping plates 198 move towards each other and jointly clamp the second sealing member 13, thereby enhancing the sealing performance of the second sealing member 13.

[0073] The implementation principle of the embodiment 3 of the present application is that: in the conventional air pressure test process, the first piston ring 181 and the second piston ring 191 in the large end plate 2 and the small end plate 3 do not move. If leakage is observed at the joint between the pump body 1 and the large end plate 2 or the small end plate 3, it is difficult to directly distinguish whether the leakage source is from the sealing failure of the end plate or the defect of the pump body 1. At this time, the air pressure in the inner cavity of the pump body 1 can be gradually increased. As the pressure rises, the first sealing member 12 and the second sealing member 13 are deformed under the clamping action of the first clamping assembly 18 and the second clamping assembly 19, and the pressing force between them and the contact surface increases, thereby significantly improving the sealing effect at this place.

[0074] On this basis, the leakage source can be distinguished by observing the density change of the bubbles generated at the leakage position: if the bubbles gradually become sparse, it indicates that the leakage rate slows down, which means that the leakage source is from the sealing of the large end plate 2 or the small end plate 3, and the sealing effect is enhanced with the increase of the pressure, resulting in reduced leakage; if the bubbles gradually become dense, it indicates that the leakage is intensified, which means that there is a defect in the pump body 1, and the defect further expands under high pressure, resulting in increased leakage. This method combines controllable pressure rise with dynamic observation, effectively realizes the rapid and accurate judgment of the leakage source, and improves the reliability and diagnosis efficiency of the detection process.

[0075] The above is only an optional embodiment of the present disclosure and is not used to limit the present disclosure. Those skilled in the art can make various modifications and changes to the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A small pump body rapid pressure test tool, characterized in that: The utility model provides a pump body (1) and the big end plate (2) and small end plate (3) of setting on the opposite both ends of pump body (1), the opposite both sides of pump body (1) form big port (4) and small port (5) respectively, locking piece (6) is arranged between big end plate (2) and small end plate (3), one end of locking piece (6) pulls big end plate (2) and blocks on big port (4), the other end of locking piece (6) pulls small end plate (3) and blocks on small port (5), and the water inlet (7) and water outlet (8) are formed on pump body (1), and the water inlet (7) and water outlet (8) of pump body (1) are connected with gas supply equipment through pipeline, and pump body (1) is placed in water tank, The utility model provides a pump body (1) and the big end plate (2) and small end plate (3) of setting on the opposite both ends of pump body (1), the opposite both sides of pump body (1) form big port (4) and small port (5) respectively, locking piece (6) is arranged between big end plate (2) and small end plate (3), one end of locking piece (6) pulls big end plate (2) and blocks on big port (4), the other end of locking piece (6) pulls small end plate (3) and blocks on small port (5), and the water inlet (7) and water outlet (8) are formed on pump body (1), and the water inlet (7) and water outlet (8) of pump body (1) are connected with gas supply equipment through pipeline, and pump body (1) is placed in water tank, The utility model discloses a pump body (1) and the big end plate (2) and small end plate (3) of setting on the opposite both ends of pump body (1), the opposite both sides of pump body (1) form big port (4) and small port (5) respectively, locking piece (6) is arranged between big end plate (2) and small end plate (3), one end of locking piece (6) pulls big end plate (2) and blocks on big port (4), the other end of locking piece (6) pulls small end plate (3) and blocks on small port (5), and the water inlet (7) and water outlet (8) are formed on pump body (1), and the water inlet (7) and water outlet (8) of pump body (1) are connected with gas supply equipment through pipeline, and pump body (1) is placed in water tank, The first clamping assembly (18) comprises a first piston ring (181), a first clamping ring (184), a second clamping ring (185), a plurality of first push blocks (186), a second push block (182), a third push block (183) and a first elastic member (187), the first piston ring (181) is slidingly arranged on the side wall of the large end plate (2) close to the small end plate (3), a plurality of the second push block (182) and the third push block (183) are fixedly arranged on the side wall of the first piston ring (181) close to the first sealing member (12), the second push block (182) is located on the outer side of the third push block (183), the first clamping ring (184) and the second clamping ring (185) are located on both sides of the first sealing member (12) along the radial direction of the large end plate (2), the first clamping ring (184) is fixedly connected with the side of the second push block (182) away from the first piston ring (181), the first push block (186) is slidingly arranged in the large end plate (2) along the radial direction of the large end plate (2), a plurality of the first push block (186) are arranged at equal intervals along the circumferential direction of the large end plate (2), both ends of the first push block (186) are respectively abutted with the third push block (183) and the second clamping ring (185), and a plurality of the first elastic member (187) are arranged in the large end plate (2) and abut the end portions of the plurality of first push blocks (186) close to the second clamping ring (185).

2. The quick pressure testing tool for a small pump body according to claim 1, characterized in that: The end face of the small port (5) of the pump body (1) is formed with a limiting inner ring (10), the side wall of the small end plate (3) close to the pump body (1) is formed with a limiting outer ring (11), and the inner circumferential wall of the limiting outer ring (11) abuts the outer circumferential wall of the limiting inner ring (10).

3. The quick pressure testing tool for a small pump body according to claim 2, characterized in that: The limiting outer ring (11) is embedded with a second sealing member (13) on the side wall close to the pump body (1), and the second sealing member (13) abuts the pump body (1).

4. The quick pressure testing tool for a small pump body according to claim 3, characterized in that: The second sealing member (13) is provided with a deformation ring cavity (17) inside, and the small end plate (3) is provided with a second clamping assembly (19), the second clamping assembly (19) clamps the second sealing member (13) to cause deformation and improve the sealing effect of the second sealing member (13).

5. The quick pressure testing tool for a small pump body according to claim 4, characterized in that: The second clamping assembly (19) comprises a second piston ring (191), a first push ring (193), a second push ring (194), a plurality of fourth push blocks (192), a push rod (195), a second elastic member (196), a first clamping plate (197) and a second clamping plate (198), the second piston ring (191) is slidingly arranged on the side wall of the small end plate (3) close to the large end plate (2), the fourth push blocks (192) are fixedly arranged on the side wall of the second piston ring (191) away from the large end plate (2), the push rod (195) is slidingly arranged in the small end plate (3) along the radial direction of the small end plate (3), a plurality of the push rods (195) are equidistantly arranged along the circumferential direction of the small end plate (3), one end of each of the plurality of push rods (195) abuts against the fourth push block (192), a plurality of the second elastic members (196) are arranged in the small end plate (3) and respectively abut against the other end of each of the plurality of push rods (195), the first push ring (193) and the second push ring (194) are slidingly arranged in the small end plate (3), the first push ring (193) is located outside the second push ring (194), one end of each of the first push ring (193) and the second push ring (194) is inserted into the plurality of push rods (195), the first clamping plate (197) and the second clamping plate (198) are slidingly arranged on both sides of the second sealing member (13) along the radial direction of the small end plate (3), a plurality of the first clamping plates (197) are located on the outer circumferential side of the second sealing member (13) and abut against the other end of the first push ring (193), a plurality of the second clamping plates (198) are located on the inner circumferential side of the second sealing member (13) and abut against the other end of the second push ring (194).

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