A leak detection device for electrolytic hydrogen generation gaskets

Abstract

The utility model relates to a kind of electrolytic hydrogen production sealing detection devices, specifically a kind of electrolytic hydrogen production sealing gasket's leakage detection device, including detection table, and the support crossbeam being set in the top of the detection table and the air cylinder being set in the top of the support crossbeam, the utility model: the detection device is realized by mechanical linkage and the cooperation of automatic determination sealing gasket leak detection: after being detected gasket is placed between two pressure disc and is pressed tightly, stepper motor drives piston pressure-increasing mechanism, drives internal piston quantitative movement to compress gas to the sealing cavity between pressure disc, gas subsequently enters the gas collection bin connected to one end, sliding block in bin is moved, and then drive rotating shaft rotation, swing lever deflection, trigger control switch to make stepper motor continue to pressurize detection;If gasket is insufficient and leaks, cavity gas escapes, leading to the gas entering gas collection bin reduces, piston block stroke shortens, swing lever cannot trigger control switch, stepper motor stops, it can be determined leakage.

Description

Technical Field

[0001] This utility model relates to an electrolytic hydrogen production sealing detection device, specifically a leakage detection device for electrolytic hydrogen production sealing gaskets. Background Technology

[0002] Electrolytic hydrogen production equipment is a core device that converts electrical energy into chemical energy by electrolyzing water (or other electrolyte solutions), thereby decomposing water molecules into hydrogen and oxygen. It is widely used in green hydrogen production and other scenarios. Its core is to achieve hydrogen-oxygen separation by using electrode reactions. It needs to operate under specific temperature, pressure and electrolyte conditions to ensure hydrogen production efficiency and safety.

[0003] As a key auxiliary component in this equipment, the sealing gasket mainly functions to form a reliable seal at the connection points of the electrodes, partitions, end plates and other components of the electrolytic cell. On the one hand, it can prevent the leakage of high-pressure electrolyte, generated hydrogen and oxygen during the electrolysis process, and avoid the safety risks and waste of raw materials caused by gas mixing.

[0004] To ensure that the gaskets in the electrolytic hydrogen production equipment can reliably prevent gas or electrolyte leakage and guarantee the safe and efficient operation of the equipment, a comprehensive sealing performance test must be performed on the gaskets before use. Under high pressure, high temperature, and high corrosion conditions, even a tiny crack or damage to the gasket can quickly lead to a leakage accident, reduce equipment efficiency, and even pose serious safety hazards. Therefore, it is crucial to strictly verify the gasket's airtightness, pressure resistance, and anti-aging performance through methods such as pressure testing and permeation testing before installation to ensure its reliability in actual use.

[0005] Currently, most leak detection devices for hydrogen electrolysis gaskets rely on electronic detection components such as pressure sensors and mass spectrometers. This increases the overall manufacturing cost of the device. Furthermore, due to the environmental factors of the hydrogen electrolysis gaskets, the actual testing process requires simulating the electrolysis environment. Under electrolysis conditions, electronic components are affected by temperature and humidity fluctuations and electromagnetic interference, leading to data drift and misjudgments. In addition, traditional static pressure holding testing methods use a fixed pressure to hold and observe pressure changes, which cannot achieve dynamic performance monitoring of the gasket during gradual pressure increases. It can only determine whether the gasket leaks under a specific pressure, making it difficult to capture the critical point of sealing failure at different pressure levels. This can easily lead to misjudgments where the gasket passes the initial test but leaks in actual operation. Utility Model Content

[0006] The purpose of this invention is to provide a leakage detection device for electrolytic hydrogen production sealing gaskets, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A leakage detection device for an electrolytic hydrogen production sealing gasket includes a detection platform, a support beam mounted on top of the detection platform, and a cylinder mounted on top of the support beam. A lower pressure plate and an upper pressure plate are fixedly connected to the top of the detection platform and the bottom of the cylinder, respectively. A sealing gasket sample for leakage detection is placed between the lower pressure plate and the upper pressure plate. A pressurization chamber and a gas collection chamber are installed at the bottom of the detection platform. A quantitative displacement mechanism is installed at one end of the pressurization chamber. A piston mechanism is installed inside the gas collection chamber. The piston mechanism cooperates with a rotating mechanism rotatably mounted inside the gas collection chamber. A control component for remotely controlling the quantitative displacement mechanism is provided at one end of the rotating mechanism.

[0008] The leakage detection device for the electrolytic hydrogen production sealing gasket as described above: the quantitative displacement mechanism includes a stepper motor fixedly connected to one end of the pressurization chamber and a screw mounted on the output shaft of the stepper motor. A piston block is threaded onto the screw, and the piston block is tightly fitted to the inner wall of the pressurization chamber.

[0009] The leakage detection device for the electrolytic hydrogen production sealing gasket as described above: one end of the pressurization chamber is fixedly connected to an exhaust pipe and a one-way valve installed on the exhaust pipe, and the exhaust pipe is connected to the top of the lower pressure plate.

[0010] The leakage detection device for the electrolytic hydrogen production sealing gasket as described above: the piston mechanism includes a sliding block slidably installed in the gas collection chamber and a sleeve installed at one end of the sliding block, wherein a ball bearing is provided inside the sleeve.

[0011] The leakage detection device for the electrolytic hydrogen production sealing gasket as described above: a spring body for elastically resetting the sliding block is provided in the gas collection chamber, and a gas guide pipe is fixedly connected to one end of the gas collection chamber, which is connected to the interior of the lower pressure plate.

[0012] The leakage detection device for the electrolytic hydrogen production sealing gasket as described above: the rotating mechanism includes a rotating shaft rotatably installed in the gas collection chamber and a spiral groove opened on the periphery of the rotating shaft, and the ball bearing is slidably installed on the spiral groove.

[0013] The leakage detection device for the electrolytic hydrogen production sealing gasket as described above: The control component includes an annular frame connected to the bottom of the detection platform and three toggle control switches circumferentially arranged on the annular frame. The three toggle control switches remotely control the start and stop of the stepper motor. One end of the rotating shaft is fixedly fitted with a swinging component, which cooperates with the three toggle control switches respectively.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This detection device achieves gasket leak detection through a combination of mechanical linkage and automatic judgment: After the gasket to be tested is placed between two pressure plates and pressed tightly, a stepper motor drives a piston pressurization mechanism, which moves the internal piston in a metered manner to compress gas into the sealing cavity between the pressure plates. The gas then enters a gas collection chamber connected to one end, pushing a sliding block inside the chamber to move, which in turn drives the rotating shaft to rotate and the swing arm to deflect, triggering a control switch to make the stepper motor continue to pressurize and detect. If the gasket is not sealed properly and leaks, the gas inside the cavity escapes, resulting in a reduction in the gas entering the gas collection chamber. The piston block stroke is shortened, the swing arm cannot trigger the control switch, and the stepper motor stops, thus determining a leak.

[0015] This utility model adopts pure mechanical transmission and control logic, eliminating the need for high-precision electronic detection components, reducing manufacturing costs and maintenance difficulty. It also avoids detection errors caused by electromagnetic interference, improving stability. The stepper motor pressurizes in stages, and the leakage-stopping mechanism automatically determines the leak. This can dynamically monitor the sealing performance of the gasket under different pressures, accurately capture the failure threshold, and eliminate the need for manual intervention, simplifying operation and reducing labor costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a leak detection device for sealing gaskets used in electrolytic hydrogen production.

[0017] Figure 2 This is a side view of the detection structure in a leak detection device for sealing gaskets used in electrolytic hydrogen production.

[0018] Figure 3 A schematic diagram of the pre-detection structure in a leak detection device for sealing gaskets used in electrolytic hydrogen production.

[0019] Figure 4 A frontal plan view of the leak detection device for sealing gaskets used in electrolytic hydrogen production.

[0020] Figure 5 A schematic diagram of the internal structure of the quantitative displacement mechanism in a leak detection device for sealing gaskets used in electrolytic hydrogen production.

[0021] Figure 6 A schematic diagram of the internal structure of the gas collection chamber in a leak detection device for sealing gaskets used in electrolytic hydrogen production.

[0022] Figure 7 A side view of the gas collection chamber and control components in a leak detection device for sealing gaskets used in electrolytic hydrogen production.

[0023] Figure 8 A schematic diagram of the piston mechanism, rotation mechanism, and control components in a leak detection device for sealing gaskets used in electrolytic hydrogen production.

[0024] Figure 9A schematic diagram showing the disassembled structure of the piston mechanism and rotating mechanism in a leak detection device for sealing gaskets used in electrolytic hydrogen production.

[0025] Figure 10 A schematic diagram of the piston mechanism and rotating mechanism in a leak detection device for sealing gaskets produced by electrolysis, taken from another angle.

[0026] In the diagram: 1. Testing platform; 2. Support beam; 3. Cylinder; 4. Lower pressure plate; 5. Upper pressure plate; 6. Sealing gasket sample; 7. Pressure chamber; 8. Stepper motor; 9. Screw; 10. Piston block; 11. Exhaust pipe; 12. One-way valve; 13. Air collection chamber; 14. Air guide pipe; 15. Sliding block; 16. Spring body; 17. Sleeve; 18. Ball bearing; 19. Rotating shaft; 20. Spiral groove; 21. Swinging component; 22. Ring frame; 23. Toggle control switch. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Please see Figures 1-10 As an embodiment of this utility model, the leakage detection device for the electrolytic hydrogen production sealing gasket includes a detection platform 1, a support beam 2 disposed on the top of the detection platform 1, and a cylinder 3 disposed on the top of the support beam 2. A lower pressure plate 4 and an upper pressure plate 5 are fixedly connected to the top of the detection platform 1 and the bottom of the cylinder 3, respectively. A sealing gasket sample 6 for leakage detection is disposed between the lower pressure plate 4 and the upper pressure plate 5. A pressurization chamber 7 and a gas collection chamber 13 are installed at the bottom of the detection platform 1. A quantitative displacement mechanism is installed at one end of the pressurization chamber 7. A piston mechanism is disposed in the gas collection chamber 13. The piston mechanism cooperates with a rotating mechanism rotatably installed in the gas collection chamber 13. A control component for remotely controlling the quantitative displacement mechanism is disposed at one end of the rotating mechanism.

[0029] In this embodiment, during testing, the gasket sample 6 to be tested is first precisely placed on the groove of the lower pressure plate 4. Then, the cylinder 3 is activated to drive the upper pressure plate 5 to fall, so that the gasket sample 6 is pressed between the lower pressure plate 4 and the upper pressure plate 5. Then, the quantitative displacement mechanism moves, so that the pressurization chamber 7 compresses the gas into the sealed cavity formed by the two pressure plates. The compressed gas is further introduced into the gas collection chamber 13 which is sealed to one end of the pressure plate. Then, the piston mechanism moves with the gas pressure. At the same time, the piston mechanism rotates through the rotating mechanism during the displacement process. The rotating mechanism deflects to a preset angle, triggering the switch of the control component. Then, a signal is sent to the quantitative displacement mechanism, instructing the quantitative displacement mechanism to start again to continuously increase the pressure, so as to realize dynamic leak detection of the gasket sample 6 under different pressure conditions. If the sealing performance of the gasket sample 6 is substandard, i.e. there are leaks or weak points in the seal, the gas in the sealed cavity will escape outward through the leaks, resulting in a reduction in the amount of gas entering the gas collection chamber 13. This will prevent the piston mechanism from reaching the preset threshold for triggering the control component switch, thus causing insufficient deflection angle of the rotating mechanism, making it unable to activate the control switch. As the control system does not receive the start signal, the quantitative displacement mechanism cannot operate. At this point, it can be accurately determined that the gasket sample 6 has a leakage problem.

[0030] As a further embodiment of this utility model, the quantitative displacement mechanism includes a stepper motor 8 fixedly connected to one end of the pressurization chamber 7 and a screw 9 mounted on the output shaft of the stepper motor 8. A piston block 10 is threadedly mounted on the screw 9, and the piston block 10 is tightly fitted to the inner wall of the pressurization chamber 7.

[0031] In this embodiment, the stepper motor 8 works by controlling the on / off state of the electromagnetic coil with pulse signals, causing the rotor to rotate step by step at a fixed angle, thereby achieving precise position control. The stepper motor 8 can drive the piston block 10 to move a preset distance through the screw 9.

[0032] As a further embodiment of this utility model, one end of the booster chamber 7 is fixedly connected to an exhaust pipe 11 and a one-way valve 12 installed on the exhaust pipe 11, and the exhaust pipe 11 is connected to the top of the lower pressure plate 4.

[0033] In this embodiment, the compressed air inside the pressurization chamber 7 is discharged into the space between the lower pressure plate 4 and the upper pressure plate 5 through the exhaust pipe 11, and the one-way valve 12 only allows air to be discharged through the exhaust pipe 11.

[0034] As a further embodiment of this utility model, the piston mechanism includes a sliding block 15 slidably installed in the gas collection chamber 13 and a sleeve 17 installed at one end of the sliding block 15, wherein a ball bearing 18 is provided inside the sleeve 17.

[0035] In this embodiment, the sliding block 15 is tightly connected to the inner wall of the gas collection chamber 13. A sleeve 17 is fixed to one end of the sliding block 15, and ball bearings 18 are disposed on the inner wall of the end of the sleeve 17.

[0036] As a further embodiment of this utility model, the gas collection chamber 13 is provided with a spring body 16 for elastically resetting the sliding block 15, and one end of the gas collection chamber 13 is fixedly connected to a gas guide pipe 14, which is connected to the interior of the lower pressure plate 4.

[0037] In this embodiment, the spring body 16 can elastically reset the sliding block 15. When the sliding block 15 is displaced, the spring body 16 will be compressed. The air guide pipe 14 can guide the gas between the lower pressure plate 4 and the upper pressure plate 5 into the gas collection chamber 13.

[0038] As a further embodiment of this utility model, the rotating mechanism includes a rotating shaft 19 rotatably installed in the gas collection chamber 13 and a spiral groove 20 formed on the periphery of the rotating shaft 19, wherein the ball bearing 18 is slidably installed on the spiral groove 20.

[0039] In this embodiment, the rotating shaft 19 is rotatably installed inside the gas collection chamber 13, and the ball bearings 18 provided inside the sleeve 17 are slidably installed on the spiral groove 20.

[0040] As a further embodiment of this utility model, the control component includes an annular frame 22 connected to the bottom of the detection platform 1 and three toggle control switches 23 arranged circumferentially on the annular frame 22. The three toggle control switches 23 remotely control the start and stop of the stepper motor 8. One end of the rotating shaft 19 is fixedly fitted with a swing member 21, and the swing member 21 cooperates with the three toggle control switches 23 respectively.

[0041] In this embodiment, during testing, the gasket sample 6 to be tested is first precisely placed on the groove of the lower pressure plate 4. Then, the cylinder 3 is activated to drive the upper pressure plate 5 to fall, so that the gasket sample 6 is pressed between the lower pressure plate 4 and the upper pressure plate 5. Then, the stepper motor 8 is activated, and the stepper motor 8 will automatically stop after rotating a certain number of revolutions. The stepper motor 8 drives the piston block 10 to move through the screw 9, so that the pressurization chamber 7 compresses the gas into the sealed cavity formed by the two pressure plates. The compressed gas is further introduced into the gas collection chamber 13, which is sealed and connected to one end of the pressure plate. At this time, the sliding block... 15 moves with the pressure of the gas, and at the same time, the sliding block 15 drives the sleeve 17 to move. During the process, the ball 18 moves on the spiral groove 20. Since the sliding block 15 is square, it does not rotate. When the ball 18 moves on the spiral groove 20, it drives the rotating shaft 19 and the swinging part 21 to rotate, so that the swinging part 21 deflects to the preset angle and moves the lever of the toggle control switch 23. Then, a signal is sent to the stepper motor 8, which instructs the stepper motor 8 to start again to continuously increase the pressure, so as to realize dynamic leak detection of the sealing gasket sample 6 under different pressure conditions. If the sealing performance of the gasket sample 6 is substandard, i.e. there are leaks or weak points in the seal, the gas in the sealed cavity will escape outward through the leaks, resulting in a reduction in the amount of gas entering the gas collection chamber 13. This causes the sliding block 15 to fail to reach the preset threshold for triggering the control component switch, which in turn causes the rotating shaft 19 and the swing component 21 to deflect too little, making it impossible to toggle the toggle control switch 23. The control system will not run the stepper motor 8 because it does not receive a start signal. At this point, it can be accurately determined that the gasket sample 6 has a leakage problem.

[0042] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.

Claims

1. A leakage detection device for an electrolytic hydrogen production sealing gasket, comprising a detection platform (1), a support beam (2) disposed on the top of the detection platform (1), and a cylinder (3) disposed on the top of the support beam (2), characterized in that, The top of the testing platform (1) and the bottom of the cylinder (3) are respectively fixedly connected to a lower pressure plate (4) and an upper pressure plate (5). A sealing gasket sample (6) for leak detection is provided between the lower pressure plate (4) and the upper pressure plate (5). A pressurization chamber (7) and a gas collection chamber (13) are installed at the bottom of the testing platform (1). A quantitative displacement mechanism is installed at one end of the pressurization chamber (7). A piston mechanism is provided in the gas collection chamber (13). The piston mechanism cooperates with a rotating mechanism rotatably installed in the gas collection chamber (13). A control component for remotely controlling the quantitative displacement mechanism is provided at one end of the rotating mechanism.

2. The leakage detection device for an electrolytic hydrogen production sealing gasket according to claim 1, characterized in that, The quantitative displacement mechanism includes a stepper motor (8) fixedly connected to one end of the pressurization chamber (7) and a screw (9) mounted on the output shaft of the stepper motor (8). A piston block (10) is threaded onto the screw (9), and the piston block (10) is tightly fitted to the inner wall of the pressurization chamber (7).

3. The leakage detection device for an electrolytic hydrogen production sealing gasket according to claim 2, characterized in that, One end of the booster chamber (7) is fixedly connected to an exhaust pipe (11) and a one-way valve (12) installed on the exhaust pipe (11). The exhaust pipe (11) is connected to the top of the lower pressure plate (4).

4. The leakage detection device for an electrolytic hydrogen production sealing gasket according to claim 3, characterized in that, The piston mechanism includes a sliding block (15) slidably installed in the gas collection chamber (13) and a sleeve (17) installed at one end of the sliding block (15), wherein a ball bearing (18) is provided inside the sleeve (17).

5. The leakage detection device for an electrolytic hydrogen production sealing gasket according to claim 4, characterized in that, The gas collection chamber (13) is provided with a spring body (16) for elastically resetting the sliding block (15). One end of the gas collection chamber (13) is fixedly connected to a gas guide pipe (14), which is connected to the interior of the lower pressure plate (4).

6. The leakage detection device for an electrolytic hydrogen production sealing gasket according to claim 5, characterized in that, The rotating mechanism includes a rotating shaft (19) rotatably installed in the gas collection chamber (13) and a spiral groove (20) opened on the periphery of the rotating shaft (19), and the ball (18) is slidably installed on the spiral groove (20).

7. The leakage detection device for an electrolytic hydrogen production sealing gasket according to claim 6, characterized in that, The control components include a ring frame (22) connected to the bottom of the testing platform (1) and three toggle control switches (23) arranged circumferentially on the ring frame (22). The three toggle control switches (23) remotely control the start and stop of the stepper motor (8). One end of the rotating shaft (19) is fixedly fitted with a swing member (21), and the swing member (21) cooperates with the three toggle control switches (23) respectively.

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