A water pressure testing apparatus

Abstract

The utility model provides a kind of water pressure test equipment, it is related to pipeline connection technical field, the water pressure test equipment includes base, fixed mechanism, sealing mechanism and test mechanism, fixed mechanism is set on base, fixed mechanism includes fixed seat, movable seat and driving part, fixed seat and movable seat are enclosed and form fixed area, for placing the workpiece to be tested in fixed area, the movement of movable seat is driven by driving part and the workpiece to be tested is fixed in fixed area;Sealing mechanism is used to seal multiple hole positions on the workpiece to be tested;Test mechanism includes liquid inlet pipe and exhaust pipe, test liquid flows in liquid inlet pipe, the liquid outlet end of liquid inlet pipe is communicated with one hole position, the air inlet end of exhaust pipe is communicated with another hole position to the top of the workpiece to be tested.The fixed mechanism is driven by driving part to seal and fix the workpiece to be tested, replace the mode of traditional fastening by bolt, effectively shorten the cumbersome installation process, improve the operation efficiency of batch testing.

Description

Technical Field

[0001] This utility model relates to the field of water pressure testing technology for tanks, and in particular to a water pressure testing device. Background Technology

[0002] In the manufacturing process of explosion-proof electrical equipment, especially explosion-proof actuators, hydrostatic testing is a key quality screening step to verify the integrity of the enclosure structure and sealing performance, preventing unqualified products from entering assembly or use.

[0003] Currently, during hydrostatic testing of explosion-proof enclosures, operators typically seal the enclosure first before connecting the water pump for testing. However, because the enclosure has multiple openings that need to be sealed, operators must use screws to fix the sealing covers to the enclosure. This requires repeated screw removal and installation during batch testing, resulting in low testing efficiency.

[0004] Furthermore, manually installing and removing screws makes it difficult to ensure uniform preload on each screw. Screws that are too loose can lead to poor sealing and leaks during testing, resulting in misjudgments. Conversely, screws that are too tight can damage gaskets or strip the casing threads. When leaks occur during testing, it's difficult to accurately determine whether the leak stems from a casing quality issue or a seal failure caused by improper installation. This can easily lead to qualified casings being mistakenly deemed unqualified and requiring rework, or unqualified products being mistakenly allowed to proceed to the next process. This not only increases unnecessary disassembly and inspection time and material waste but also introduces potential quality risks. Utility Model Content

[0005] In view of this, the present invention proposes a water pressure testing device that can solve the problem of low testing efficiency during water pressure testing and eliminate the problem of additional disassembly and inspection losses caused by human error.

[0006] The technical solution of this utility model is implemented as follows: This utility model provides a water pressure testing device, including: Base; A fixing mechanism is provided on the base. The fixing mechanism includes a fixed seat, a movable seat, and a driving component. A fixing area is formed between the fixed seat and the movable seat. The fixing area is used to place the workpiece to be tested. The driving component is used to drive the movement of the movable seat to limit and fix the workpiece to be tested in the fixing area. A sealing mechanism, disposed on the fixing mechanism, is used to seal multiple holes on the workpiece to be tested; The testing mechanism includes an inlet pipe and an outlet pipe. The inlet pipe contains a test liquid, and the outlet end of the inlet pipe is connected to one of the holes via the fixing mechanism. The inlet end of the outlet pipe is connected to the top of the workpiece to be tested via the fixing mechanism.

[0007] Based on the above technical solutions, preferably, the fixed base includes a first fixed plate and a second fixed plate, the first fixed plate and the second fixed plate are vertically arranged and both are disposed on the base, the movable base includes a first movable plate and a second movable plate, which are respectively aligned with the first fixed plate and the second fixed plate, and the driving component includes a first driving member and a second driving member, which are respectively used to drive the movement of the first movable plate and the second movable plate, so that the fixed area is formed by the first fixed plate, the second fixed plate, the first movable plate and the second movable plate.

[0008] More preferably, the top of the workpiece to be tested is also provided with a hole, the movable seat also includes a third movable plate, the driving component also includes a third driving component for driving the third movable plate to rise and fall, and the sealing mechanism is also provided on the third movable plate.

[0009] More preferably, a gantry is provided on the base, and the third driving member is provided on the gantry.

[0010] Based on the above technical solutions, preferably, the end face of the third movable plate that mates with the workpiece to be tested has a third hole, the third movable plate has a third guide groove that communicates with the third hole, and the air inlet end of the exhaust pipe is inserted into the third guide groove and communicates with the third hole.

[0011] More preferably, the third movable plate is further provided with an insert, which is used to be inserted into the corresponding hole, and its shape matches the hole. The third hole is formed on the insert.

[0012] Based on the above technical solutions, preferably, the end face of the first movable plate that is used to cooperate with the workpiece to be tested has a first hole, and the first movable plate has a first guide groove that communicates with the first hole. The liquid outlet end of the liquid inlet pipe is inserted into the first guide groove and communicates with the first hole.

[0013] More preferably, the base is also provided with a liquid tank containing the test liquid, and the inlet end of the liquid inlet pipe and the outlet end of the outlet pipe are both connected to the liquid tank.

[0014] Based on the above technical solutions, preferably, a booster pump and a pressure gauge are connected to the inlet pipe, the booster pump is installed on the gantry, and the booster pump is used to pump the test liquid in the liquid tank into the inlet pipe.

[0015] More preferably, the exhaust pipe is provided with an exhaust valve.

[0016] The water pressure testing equipment of this invention has the following advantages over the prior art: (1) The moving seat is driven by the driving component to limit and fix the workpiece to be tested in the fixed area. The workpiece to be tested is sealed to the fixing mechanism by the sealing mechanism to ensure the sealing reliability of the workpiece to be tested after fixing. The test liquid is injected into the workpiece to be tested through the liquid inlet pipe and the air in the workpiece to be tested is discharged through the exhaust pipe, thereby realizing the water pressure test of the workpiece to be tested. The fixing mechanism is driven by the driving component to seal and fix the workpiece to be tested, replacing the traditional method of fastening with bolts. This effectively shortens the cumbersome installation process, improves the efficiency of batch testing, and eliminates the problem of uneven clamping force caused by human factors, which causes additional disassembly and inspection losses.

[0017] (2) By setting the insert, it can be inserted into the workpiece to be tested during the descent of the third movable plate. This can achieve positioning and guidance, as well as reliable cooperation with the workpiece to be tested. Combined with the sealing mechanism on the third movable plate, a double sealing barrier is achieved, which improves the reliability of the top sealing of the workpiece to be tested and effectively prevents leakage of high pressure liquid at the top during the test. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the overall structure of the water pressure testing equipment of this utility model; Figure 2 This is a schematic diagram of the overall structure of the water pressure testing equipment of this utility model from another direction; Figure 3 This is a schematic diagram of the structure of the first movable plate in the water pressure testing device of this utility model; Figure 4 This is a schematic diagram of the structure of the third movable plate in the water pressure testing equipment of this utility model; Figure 5This is a schematic diagram of the structure of the workpiece to be tested; Figure 6 This is a schematic diagram of the structure of the water pressure testing equipment of this utility model, in which the workpiece to be tested is placed.

[0020] Figure label: 1. Base; 2. Fixing mechanism; 21. Fixing seat; 211. First fixing plate; 212. Second fixing plate; 22. Movable seat; 221. First movable plate; 2211. First hole; 2212. First guide groove; 222. Second movable plate; 223. Third movable plate; 2231. Third hole; 2232. Third guide groove; 23. Driving component; 231. First driving component; 232. Second driving component; 233. Third driving component; 24. Fixing area; 25. Insert; 3. Sealing mechanism; 4. Testing mechanism; 41. Liquid inlet pipe; 42. Exhaust pipe; 43. Liquid tank; 44. Booster pump; 45. Pressure gauge; 46. Exhaust valve; 5. Gantry; 6. Control button; 100. Workpiece to be tested; 101. Hole position. Detailed Implementation

[0021] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0022] like Figures 1 to 6 As shown, this utility model provides a water pressure testing device, including a base 1, a fixing mechanism 2, a sealing mechanism 3, and a testing mechanism 4. The fixing mechanism 2 is disposed on the base 1 and includes a fixed seat 21, a movable seat 22, and a driving component 23. The fixed seat 21 and the movable seat 22 together form a fixed area 24, which is used to place the workpiece 100 to be tested. The driving component 23 is used to drive the movement of the movable seat 22 to limit and fix the workpiece 100 to be tested within the fixed area 24. The sealing mechanism 3 is disposed on the fixing mechanism 2 and is used to seal multiple holes 101 on the workpiece 100 to be tested. The testing mechanism 4 includes an inlet pipe 41 and an exhaust pipe 42. Test liquid flows in the inlet pipe 41, and the outlet end of the inlet pipe 41 is connected to one of the holes 101 through the fixing mechanism 2. The inlet end of the exhaust pipe 42 is connected to the top of the workpiece 100 through the fixing mechanism 2 and another hole 101.

[0023] The driving component 23 drives the movable seat 22 to move, thereby limiting and fixing the workpiece 100 to be tested within the fixed area 24. The sealing mechanism 3 seals the workpiece 100 to be tested and the fixing mechanism 2, ensuring the reliability of the seal after fixing. Test liquid is injected into the workpiece 100 through the inlet pipe 41, and air is expelled from the workpiece 100 through the exhaust pipe 42, thus achieving the hydrostatic test of the workpiece 100. By driving the fixing mechanism 2 with the driving component 23 to seal and fix the workpiece 100, the traditional bolt-fastening method is replaced, effectively shortening the cumbersome installation process, improving the efficiency of batch testing, and eliminating the problem of uneven clamping force caused by human factors, which leads to additional disassembly and inspection losses.

[0024] The fixing mechanism 2 is used to limit and fix the workpiece 100 to be tested. The projected shape of the fixed area 24 formed by the fixed seat 21 and the movable seat 22 can be a rectangle, a circle, a triangle or other polygons, etc. It can be adaptively selected according to the outer contour shape of different workpieces 100 to be tested. In this embodiment, the projected shape of the fixed area 24 is a rectangle.

[0025] Furthermore, the movement of the drive component 23 in driving the movable seat 22 includes driving the movable seat 22 to reciprocate in a linear direction, and also driving the movable seat 22 to rotate in a curved direction. In this embodiment, the drive component 23 is used to drive the movable seat 22 to reciprocate in a linear direction. Therefore, the drive component 23 includes a cylinder, a hydraulic cylinder, an oil cylinder, an electric push rod, or a lead screw transmission structure, etc.

[0026] The sealing mechanism 3 can be a sealing ring or a sealing gasket, etc. In this embodiment, the sealing mechanism 3 uses a sealing gasket to ensure the sealing effect to the maximum extent. The rubber sealing gasket has strong surface sealing performance and can directly form a tight sealing interface with the surface of the workpiece 100 to be tested, blocking the path of test liquid penetration from the source and providing basic sealing protection for subsequent water pressure testing.

[0027] In addition, the test liquids include water, oil, or other liquid media to meet different test requirements.

[0028] It should be noted that this embodiment uses an explosion-proof enclosure as an example to describe the workpiece to be tested. In actual use, the workpiece to be tested can also be other workpiece products that need to be tested by water pressure.

[0029] like Figures 1 to 6As shown, in some embodiments, the fixed base 21 includes a first fixed plate 211 and a second fixed plate 212, which are vertically arranged and both mounted on the base 1. The movable base 22 includes a first movable plate 221 and a second movable plate 222, which are respectively aligned with the first fixed plate 211 and the second fixed plate 212. The driving component 23 includes a first driving member 231 and a second driving member 232, which are respectively used to drive the movement of the first movable plate 221 and the second movable plate 222, so that the fixed area 24 is formed by the first fixed plate 211, the second fixed plate 212, the first movable plate 221, and the second movable plate 222. This allows for positioning and clamping of the workpiece 100 to be tested from at least four directions, improving the stable fixing effect on workpieces 100 of different shapes, increasing the applicability of the device, and ensuring that the workpiece 100 will not move or deflect during the test, thus guaranteeing sealing and testing effectiveness.

[0030] The first fixing plate 211 and the second fixing plate 212 are detachably mounted to the base 1 by bolts or screws, or welded to the base 1. To improve the structural strength of the first fixing plate 211 and the second fixing plate 212, reinforcing ribs are provided between the first fixing plate 211 and the second fixing plate 212 and the base 1. Furthermore, the first driving component 231, the second driving component 232, and the third driving component 233 are all cylinders, which are detachably mounted to the base 1 by bolts.

[0031] like Figures 1 to 6 As shown, in some embodiments, the top of the workpiece 100 to be tested also has a hole 101. The movable seat 22 further includes a third movable plate 223, and the driving component 23 further includes a third driving component 233 for driving the third movable plate 223 to rise and fall. The sealing mechanism 3 is also provided on the third movable plate 223. By sealing the top of the workpiece 100 to be tested through the third driving component 233, the operator does not need to install the top cover plate separately, thus forming a multi-directional fixation of the workpiece 100 to be tested, realizing all-round rapid clamping, and also expanding the scope of use of the device.

[0032] Among them, the first driving component 231, the second driving component 232 and the third driving component 233 are all cylinders. The cylinders are detachably fixed to the base 1 by bolts. When disassembly is required, only the bolts at the corresponding positions need to be unscrewed to remove the parts to be maintained for replacement or repair. The whole process is short and easy to operate, which significantly reduces the maintenance cost and operation difficulty of the equipment.

[0033] Furthermore, a gantry 5 is provided on the base 1, and the third drive component 233 is provided on the gantry 5. The gantry 5 provides an installation position for the third drive component 233, which facilitates the installation of the third drive component 233. It can also ensure the stability and verticality of the third movable plate 223 during the lifting process, avoid the problem of misalignment or wear of the seal caused by the shaking of the drive component 23, and at the same time make the equipment structure compact and the space utilization rate high.

[0034] In some embodiments, the third movable plate 223 has a third hole 2231 on its end face that mates with the workpiece 100 to be tested. A third guide groove 2232 communicating with the third hole 2231 is provided on the third movable plate 223. The air inlet end of the exhaust pipe 42 is inserted into the third guide groove 2232 and communicates with the third hole 2231. When the third movable plate 223 descends and presses against the top of the workpiece 100 to be tested, the exhaust pipe 42 automatically communicates with the internal cavity of the workpiece 100 through the third guide groove 2232 and the third hole 2231. This eliminates the need for manual pipe connection, simplifies operation, and avoids sealing failure at the connection point due to frequent manual insertion and removal of pipes.

[0035] Among them, the sealing mechanism 3 on the third movable plate 223 is provided with a through hole at the alignment of the third hole 2231 to ensure the communication between the third hole 2231 and the hole position 101 of the component to be tested.

[0036] Optionally, the third movable plate 223 is further provided with an insert 25, which is used to insert into the corresponding hole 101, and its shape matches the hole 101. The third hole 2231 is formed on the insert 25. The insert 25 rises and falls synchronously during the lifting and lowering of the third movable plate 223, and during the descent of the third movable plate 223, it can be inserted into the workpiece 100 to be tested, which can not only achieve positioning and guidance, but also reliably cooperate with the workpiece 100 to be tested. Combined with the sealing mechanism 3 on the third movable plate 223, a double sealing barrier is achieved, which improves the reliability of the top sealing of the workpiece 100 to be tested and effectively prevents leakage of high-pressure liquid at the top during the test.

[0037] like Figures 1 to 6As shown, in some embodiments, the first movable plate 221 has a first hole 2211 on its end face that mates with the workpiece 100 to be tested. A first guide groove 2212 communicating with the first hole 2211 is also provided on the first movable plate 221. The outlet end of the liquid inlet pipe 41 is inserted into the first guide groove 2212 and communicates with the first hole 2211. This achieves automatic and rapid connection of the side liquid inlet pipe 41, ensuring that high-pressure liquid can be reliably injected into the workpiece. When the first movable plate 221 moves to press against the side of the workpiece 100 to be tested, the liquid inlet pipe 41 automatically connects to the internal cavity of the workpiece 100 through the first guide groove 2212 and the first hole 2211, eliminating the need for manual pipe connection, simplifying operation, and avoiding sealing failure at the connection point due to frequent manual insertion and removal of the pipe.

[0038] The sealing mechanism 3 on the first movable plate 221 is also provided with a through hole at the alignment of the first hole 2211 with the hole 101 of the component to be tested, so as to ensure the communication between the first hole 2211 and the hole 101 of the component to be tested.

[0039] In some embodiments, the base 1 is further provided with a liquid tank 43, which contains the test liquid. The inlet end of the inlet pipe 41 and the outlet end of the outlet pipe 42 are both connected to the liquid tank 43. The test liquid can be recycled, reducing resource consumption. At the same time, by extending the outlet end below the liquid surface in the liquid tank 43, it is possible to visually observe whether bubbles are continuously generated during the pressure holding period, providing an auxiliary visualization method for determining whether there is a minor leak in the workpiece.

[0040] In some embodiments, a booster pump 44 and a pressure gauge 45 are connected to the inlet pipe 41. The booster pump 44 is mounted on the gantry 5 and is used to pump the test liquid from the liquid tank 43 into the inlet pipe 41. The booster pump 44 can provide a stable output pressure to meet the test requirements, while the pressure gauge 45 is used to monitor and display the internal pressure value of the workpiece 100 under test in real time, so that the operator can control the start and stop of the booster pump 44 or judge the pressure holding performance.

[0041] In some embodiments, the exhaust pipe 42 is provided with an exhaust valve 46. When injecting test liquid at the beginning of the test, opening the exhaust valve 46 ensures that the air inside the workpiece 100 under test is completely expelled, avoiding the problem of inaccurate pressure readings due to the presence of internal air. After the air is expelled, the exhaust valve 46 is closed, thereby establishing and maintaining the test pressure to ensure the accuracy and reliability of the test results.

[0042] In some embodiments, the base 1 is further provided with a control button 6, which is electrically connected to the drive component 23 to control the start and stop of the drive component 23 by pressing the control button 6. Alternatively, two control buttons 6 can be provided, one for controlling the start and stop of the drive component 23 and the other as an emergency stop button. Furthermore, three control buttons 6 can be provided, where pressing two control buttons 6 simultaneously turns the drive component 23 on, pressing any one of the control buttons 6 stops the drive component 23, and the third control button 6 serves as an emergency stop button. This effectively prevents accidental activation of the drive component 23, ensuring the safety of the device.

[0043] like Figures 1 to 6 As shown above, this application provides a water pressure testing device with a novel design, simple operation, and high reliability. In actual use, the workpiece to be tested is placed on the fixed area of ​​the base and pressed against the fixed seat. Then, the control button is pressed, and the drive component moves the movable seat to clamp and fix the workpiece. The booster pump is turned on to inject water into the workpiece through the inlet pipe. The vent valve is opened to expel air from the workpiece, and then closed. The pressure gauge reading and holding time are used as a reference to observe the water seepage and leakage of the workpiece. After the test, the control button is pressed, and the drive component moves the movable seat away from the fixed seat. The workpiece is then removed, the test liquid is wiped dry, and the next round of testing can begin. The entire process is seamless and simple to operate, greatly improving work efficiency.

[0044] 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 water pressure testing device, characterized in that, include: Base (1); A fixing mechanism (2) is provided on the base (1). The fixing mechanism (2) includes a fixed seat (21), a movable seat (22), and a driving component (23). A fixing area (24) is formed between the fixed seat (21) and the movable seat (22). The fixing area (24) is used to place the workpiece to be tested (100). The driving component (23) is used to drive the movement of the movable seat (22) to limit and fix the workpiece to be tested (100) in the fixing area (24). A sealing mechanism (3) is provided on the fixing mechanism (2) for sealing multiple holes (101) on the workpiece to be tested (100). The testing mechanism (4) includes an inlet pipe (41) and an exhaust pipe (42). The inlet pipe (41) contains test liquid. The outlet end of the inlet pipe (41) is connected to one of the holes (101) through the fixing mechanism (2). The inlet end of the exhaust pipe (42) is connected to the top of the workpiece (100) to be tested through the fixing mechanism (2).

2. The water pressure testing equipment as described in claim 1, characterized in that: The fixed base (21) includes a first fixed plate (211) and a second fixed plate (212). The first fixed plate (211) and the second fixed plate (212) are vertically arranged and are both arranged on the base (1). The movable base (22) includes a first movable plate (221) and a second movable plate (222), which are respectively aligned with the first fixed plate (211) and the second fixed plate (212). The driving component (23) includes a first driving member (231) and a second driving member (232), which are respectively used to drive the movement of the first movable plate (221) and the second movable plate (222) so that the fixed area (24) is formed by the first fixed plate (211), the second fixed plate (212), the first movable plate (221) and the second movable plate (222).

3. The water pressure testing equipment as described in claim 2, characterized in that: The top of the workpiece to be tested (100) is also provided with a hole (101), the movable seat (22) also includes a third movable plate (223), the driving component (23) also includes a third driving component (233) for driving the third movable plate (223) to rise and fall, and the sealing mechanism (3) is also provided on the third movable plate (223).

4. The water pressure testing equipment as described in claim 3, characterized in that: A gantry (5) is provided on the base (1), and the third drive unit (233) is provided on the gantry (5).

5. The water pressure testing equipment as described in claim 3, characterized in that: The third movable plate (223) has a third hole (2231) on its end face that mates with the workpiece (100) to be tested. The third movable plate (223) has a third guide groove (2232) that communicates with the third hole (2231). The air inlet end of the exhaust pipe (42) is inserted into the third guide groove (2232) and communicates with the third hole (2231).

6. The water pressure testing equipment as described in claim 5, characterized in that: The third movable plate (223) is also provided with an insert (25), which is used to be inserted into the corresponding hole (101) and its shape matches the hole (101). The third hole (2231) is opened on the insert (25).

7. The water pressure testing equipment as described in claim 4, characterized in that: The first movable plate (221) has a first hole (2211) on its end face that cooperates with the workpiece (100) to be tested. The first movable plate (221) has a first guide groove (2212) that communicates with the first hole (2211). The liquid outlet end of the liquid inlet pipe (41) is inserted into the first guide groove (2212) and communicates with the first hole (2211).

8. The water pressure testing equipment as described in claim 7, characterized in that: The base (1) is also provided with a liquid tank (43), which contains the test liquid. The inlet end of the liquid inlet pipe (41) and the outlet end of the outlet pipe (42) are both connected to the liquid tank (43).

9. The water pressure testing equipment as described in claim 8, characterized in that: A booster pump (44) and a pressure gauge (45) are connected to the inlet pipe (41). The booster pump (44) is mounted on the gantry (5) and is used to pump the test liquid in the liquid tank (43) into the inlet pipe (41).

10. The water pressure testing equipment as described in any one of claims 1-9, characterized in that: An exhaust valve (46) is provided on the exhaust pipe (42).

Images