Electrolytic bath end plate structure with pressure-equalizing reaction area

Abstract

The invention discloses an electrolytic bath end plate structure with a pressure equalizing reaction area, and relates to the field of water electrolysis hydrogen production, the electrolytic bath end plate structure comprises two end pressing plates and an electrolysis assembly arranged between the two end pressing plates and used for electrolysis hydrogen production, and fastening bolts are arranged on the two end pressing plates in a penetrating mode; wherein one end pressing plate is provided with a plurality of voltage-sharing electric bolts for restraining the bending deformation of the end pressing plate, the other end pressing plate is provided with pressure sensors corresponding to the voltage-sharing electric bolts, and one side of each voltage-sharing electric bolt is provided with a supporting frame. The supporting frame is provided with an elastic assembly used for adjusting the tightness of the voltage-sharing electric bolt, a driving mechanism used for driving the elastic assembly to move is arranged on the supporting frame, and the supporting frame is further provided with a PLC used for controlling the driving mechanism to drive the elastic assembly to move and twist the voltage-sharing electric bolt. The non-uniform-stress end pressing plate is automatically adjusted, bending deformation of the end pressing plate is restrained, and the problem that contact between an electrode and a diaphragm is not tight due to deformation of the end plate is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of water electrolysis hydrogen production, in particular to an electrolyzer end plate structure for uniform pressure in the reaction area. BACKGROUND

[0002] In the field of water electrolysis hydrogen production, with the continuous development of related technologies, water electrolysis hydrogen production devices are being used more and more widely. Water electrolysis hydrogen production, as a green and environmentally friendly method of hydrogen production, is of great significance for achieving sustainable development of energy. With the progress of technology, people have higher requirements for the hydrogen production capacity of water electrolysis hydrogen production devices, expecting to improve the hydrogen production efficiency and output of unit equipment to meet the growing market demand.

[0003] In a water electrolysis hydrogen production device, an electrolyzer is usually composed of multiple electrodes and diaphragms stacked together and assembled by two end plates. The end plate not only bears the structural support function, but also directly affects the contact effect of the electrode and the sealing element. With the continuous increase of the area of the electrolyzer monomer, the mechanical stress and internal pressure required by the end plate significantly increase. Under the combined action of electrolyte pressure, electrode stacking fastening force and thermal stress, the end plate is prone to bending or slight warping deformation. Especially when the size of the end plate is too large and the thickness or rigidity is insufficient, the deformation is more obvious. The bending or deformation of the end plate can easily lead to uneven contact between the electrode and the diaphragm, resulting in uneven current distribution.

[0004] For the related technologies in the above, the inventors believe that there are the following defects: With the continuous increase of the area of the electrolyzer monomer, the mechanical stress and internal pressure on the end plate increase, which can easily cause the end plate to bend or slightly warp, leading to uneven contact between the electrode and the diaphragm, resulting in uneven current distribution, and affecting the hydrogen production effect of the water electrolysis hydrogen production device. SUMMARY

[0005] In order to improve the problem of bending or slight warping deformation of the end plate caused by mechanical stress and internal pressure, which leads to uneven contact between the electrode and the diaphragm, the present application provides an electrolyzer end plate structure for uniform pressure in the reaction area.

[0006] The electrolyzer end plate structure for uniform pressure in the reaction area provided by the present application adopts the following technical solution: The utility model provides an electrolytic cell end plate structure of reaction area equalizing pressure, including two end pressure plates, the electrolytic component for electrolytic hydrogen production is arranged between two end pressure plates, the fastening bolt is arranged on two end pressure plates, wherein one end pressure plate is provided with a plurality of equalizing pressure electric bolts for inhibiting the bending deformation of end pressure plate, the pressure sensor corresponding with equalizing pressure electric bolt is arranged on the other end pressure plate, one side of equalizing pressure electric bolt is provided with support frame, and the tightness component for adjusting the tightness of equalizing pressure electric bolt is arranged on support frame, driving mechanism for driving tightness component to move is arranged on support frame, and PLC controller for controlling driving mechanism to drive tightness component to move and screw equalizing pressure electric bolt is further arranged on support frame.

[0007] By adopting the above technical scheme, two end pressure plates are fixedly connected through fastening bolts to ensure the stability of the electrolytic cell as a whole, one of the end pressure plates is provided with equalizing pressure electric bolts to inhibit the deformation of the end pressure plate and ensure uniform contact of the electrode and the diaphragm, a pressure sensor capable of monitoring the force of the end pressure plate in real time is arranged at a position corresponding to the equalizing pressure electric bolts on the other end pressure plate, the tightness component can be used to adjust the tightness of the equalizing pressure electric bolts, the driving mechanism can drive the tightness component to move to each equalizing pressure electric bolt, and the PLC controller can control the driving mechanism to drive the tightness component to move and screw the equalizing pressure electric bolts, and the PLC controller has stored the coordinate parameters and corresponding pressure threshold values of each equalizing pressure electric bolt in advance, when the pressure of the equalizing pressure electric bolts at a certain position exceeds the preset threshold value, the PLC controller controls the driving mechanism to move the tightness component to the corresponding equalizing pressure electric bolts to adjust the tightness thereof, so that the force of the end pressure plate is uniform, the end plate is prevented from bending or deforming, the contact of the electrode and the diaphragm is uniform, the current distribution is uniform, and the hydrogen production effect of the water electrolysis hydrogen production device is improved.

[0008] Optionally, the driving mechanism comprises a support plate horizontally sliding on the support frame, a first driving component arranged on the support frame to drive the support plate to horizontally slide, and a second driving component arranged on the support plate to drive the tightness component to vertically move, and the tightness component horizontally slides on the support plate.

[0009] By adopting the above technical scheme, the first driving component can drive the support plate to horizontally slide on the support frame, thereby driving the tightness component to move in the horizontal direction, when the local pressure of the end pressure plate is uneven, the first driving component can quickly move the tightness component to the horizontal position corresponding to the equalizing pressure electric bolts, the second driving component arranged on the support plate can drive the tightness component to move in the vertical direction, when the local pressure of the end pressure plate is uneven, the second driving component can quickly position the tightness component to the vertical position corresponding to the equalizing pressure electric bolts, and through the cooperation of the first driving component, the second driving component and the PLC controller, the tightness component can be accurately moved to the position of the equalizing pressure electric bolts to adjust the tightness of the equalizing pressure electric bolts.

[0010] Optionally, the first driving assembly comprises a first screw rod rotatably connected to the support frame, a guide rod arranged on the support frame, and a first motor arranged on the support frame, the first screw rod is coaxially rotatably connected to the first motor, the support plate is threadedly connected to the first screw rod, and the support plate is slidably connected to the guide rod.

[0011] By adopting the above technical scheme, when the tensioning assembly is driven to move in the horizontal direction, the output shaft of the first motor drives the first screw rod to rotate, the first screw rod drives the support plate threadedly connected to the first screw rod to move along the direction of the guide rod until the tensioning assembly accurately reaches the horizontal coordinate position preset by the PLC controller.

[0012] Optionally, the second driving assembly comprises a second screw rod rotatably connected to the support plate, a mounting plate vertically slidably arranged on the support plate, and a second motor arranged on the support plate, the second screw rod is coaxially rotatably connected to the second motor, the mounting plate is threadedly connected to the second screw rod, and the first screw rod and the second screw rod are perpendicular to each other.

[0013] By adopting the above technical scheme, during the horizontal movement of the tensioning assembly, the output shaft of the second motor synchronously drives the second screw rod to rotate, the second screw rod drives the mounting plate threadedly connected to the second screw rod to vertically slide along the support plate, until the tensioning assembly accurately reaches the vertical coordinate position preset by the PLC controller.

[0014] Optionally, the tensioning assembly comprises an electric telescopic rod arranged on the mounting plate, a push plate arranged at the telescopic end of the electric telescopic rod, a third motor mounted on the push plate, and a sleeve arranged on the output shaft of the third motor, the electric telescopic rod is perpendicular to the first screw rod and the second screw rod.

[0015] By adopting the above technical scheme, after the tensioning assembly moves to the equalizing electric bolt, the telescopic end of the electric telescopic rod is extended to push the push plate until the sleeve is fitted with the equalizing electric bolt, then the third motor drives the sleeve to rotate, and the pressure on the equalizing electric bolt is adjusted by screwing the equalizing electric bolt, so that the pressure meets the threshold value preset by the PLC controller.

[0016] Optionally, the electrolysis assembly comprises sealing members arranged on the two end pressure plates respectively, polar plates arranged on the sealing members, inner frames opened on the polar plates, diffusion layers arranged in the inner frames, and electrodes arranged on the side of the diffusion layers away from the polar plates.

[0017] By adopting the technical scheme, the sealing member is arranged on the end pressing plate, which can prevent electrolyte leakage and ensure stability of the electrolysis process, the electrode plate is arranged on the sealing member, which provides a basic conductive structure for the electrolysis reaction, the inner frame is arranged on the electrode plate and used for accommodating the diffusion layer, the diffusion layer can make the reaction gas uniformly distributed and improve the reaction efficiency, and the electrode is arranged on the side of the diffusion layer away from the electrode plate, which cooperates with the electrode plate to realize the water electrolysis hydrogen production reaction after being electrified.

[0018] Optionally, the side of the electrode away from the diffusion layer is provided with a diaphragm, and an insulating plate for blocking a leakage loop is arranged between the end pressing plate and the electrode plate.

[0019] By adopting the technical scheme, the diaphragm is arranged on the side of the electrode away from the diffusion layer, which can make the electrolysis process more stable, and the insulating plate is arranged between the end pressing plate and the electrode plate, which can block the leakage loop and improve the safety and reliability of the electrolytic cell end plate structure.

[0020] Optionally, the electrode plate is provided with a wiring hole for external power supply.

[0021] By adopting the technical scheme, the wiring hole is arranged on the electrode plate for external power supply, which can provide power support for the electrolytic cell and ensure normal operation of the electrolysis hydrogen production reaction.

[0022] Optionally, the sleeve is slidably provided with two clamping plates arranged in opposite directions, the opposite surfaces of the two clamping plates are provided with abutting components for clamping the equalizing electric bolt, one side of the clamping plate is provided with a first spring for pushing the clamping plate to reset, the sleeve is slidably provided with a limiting block for pushing the clamping plate to clamp the equalizing electric bolt, one side of the limiting block away from the clamping plate is provided with a second spring for pushing the limiting block to reset, one end of the second spring is arranged on the inner wall of the sleeve, and the other end of the second spring is arranged on the side of the limiting block away from the clamping plate.

[0023] By adopting the technical scheme, as the equalizing electric bolt gradually penetrates into the sleeve, the equalizing electric bolt gradually pushes the limiting block to move in the direction of the electric telescopic rod, and the second spring is squeezed and the clamping plate is pushed in the process of movement of the limiting block, so that the abutting component gradually clamps the equalizing electric bolt and squeezes the first spring, which facilitates the screwing operation of the equalizing electric bolt, thereby adjusting the tightness of the equalizing electric bolt according to the pressure feedback of the pressure sensor, after the adjustment is completed, the telescopic end of the electric telescopic rod is retracted and drives the push plate, the third motor and the sleeve to move away from the equalizing electric bolt, in the process of movement of the sleeve, the second spring releases the elastic force to push the limiting block to reset, and in the process of movement of the limiting block, the first spring releases the elastic force and pushes the clamping plate and the abutting component to reset, and the equalizing electric bolt is no longer clamped.

[0024] Optionally, the abutting assembly comprises a plurality of connecting barrels fixed on the side wall of the clamping plate, clamping rods sliding on the connecting barrels, and a third spring arranged in the connecting barrels, the distance between the two clamping rods is greater than the diameter of the circumscribed circle of the equal-pressure electric bolt head, one end of the third spring is arranged on the inner wall of the connecting barrel, and the other end of the third spring is arranged on the end of the clamping rod close to the clamping plate.

[0025] By adopting the above technical scheme, the distance between the two clamping rods is greater than the diameter of the circumscribed circle of the equal-pressure electric bolt head, which prevents the equal-pressure electric bolt from touching the clamping rod during the sleeve fitting of the equal-pressure electric bolt, thereby affecting clamping. When clamping the equal-pressure electric bolt, the limiting block pushes the clamping plate, so that the clamping rod and the connecting barrel gradually approach the equal-pressure electric bolt. When the clamping rod abuts against the equal-pressure electric bolt, the clamping rod moves to the inside of the sleeve and presses the third spring. As the equal-pressure electric bolt gradually pushes the limiting block, the limiting block pushes the clamping plate to gradually approach the center of the sleeve. The tighter the equal-pressure electric bolt is clamped, the more the adjustment is completed. After the adjustment is completed, the sleeve is retracted under the driving of the electric telescopic rod. The second spring releases the elastic force to push the limiting block to move. The first spring releases the elastic force to push the clamping plate to reset. The third spring gradually pushes the clamping rod to restore the clamping rod to the original position.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Improve the uniformity of the stress on the electrochemical reaction area of the electrolytic cell, effectively inhibit the problem that the electrode and the diaphragm are not tightly contacted due to the bending deformation of the end plate during operation.

[0027] 2. The equal-pressure electric bolt can quickly adjust the unevenly stressed end pressure plate, so that the bending deformation of the end pressure plate is more comprehensively inhibited, and the electrode and the diaphragm are more uniformly attached in the entire reaction area.

[0028] 3. The equal-pressure electric bolt head of different angles can be clamped, and the equal-pressure electric bolt is accurately adjusted to quickly restore the stressed area of the end pressure plate to a balanced state. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating laborious work.

[0030] Figure 1 is the overall schematic view of the electrolytic cell end plate structure provided by the embodiments of the present application; Figure 2 is a schematic view of a side view section provided by the embodiments of the present application; Figure 3is a schematic view of the side view profile of the electrolytic cell provided by the embodiment of the present application; Figure 4 is a schematic view of the top view of the electrolytic cell provided by the embodiment of the present application; Figure 5 is a schematic view of the overall of the support frame and the driving mechanism provided by the embodiment of the present application; Figure 6 is a schematic view of the top view profile of the support frame provided by the embodiment of the present application; Figure 7 is a schematic view of the sleeve provided by the embodiment of the present application; Figure 8 is a schematic view of the profile of the sleeve provided by the embodiment of the present application; Figure 9 is a schematic view of the profile of the sleeve provided by the embodiment of the present application.

[0031] Reference signs: 1, end pressing plate; 2, electrolytic assembly; 201, sealing piece; 202, polar plate; 203, inner frame; 204, diffusion layer; 205, electrode; 3, fastening bolt; 4, pressure equalizing electric bolt; 5, pressure sensor; 6, support frame; 7, tensioning assembly; 701, electric telescopic rod; 702, push plate; 703, third motor; 704, sleeve; 8, driving mechanism; 801, first driving assembly; 8011, first lead screw; 8012, guide rod; 8013, first motor; 802, second driving assembly; 8021, second lead screw; 8022, mounting plate; 8023, second motor; 9, PLC controller; 10, support plate; 11, diaphragm; 12, insulating plate; 13, wiring hole; 14, clamping plate; 15, abutting assembly; 1501, connecting cylinder; 1502, clamping rod; 1503, third spring; 16, first spring; 17, limiting block; 18, second spring. DETAILED DESCRIPTION

[0032] The following will be described in detail below with reference to the accompanying drawings Figures 1-9 The present application will be further described in detail.

[0033] The present embodiment discloses an electrolytic cell end plate structure for reaction area pressure equalization.

[0034] Reference will be made to Figure 1 and Figure 2 An electrolytic cell end plate structure for reaction area pressure equalization comprises two end pressing plates 1, an electrolytic assembly 2 arranged between the two end pressing plates 1, fastening bolts 3 penetrating through the two end pressing plates 1, a pressure equalizing electric bolt 4 arranged on one of the end pressing plates 1, a pressure sensor 5 arranged on the other end pressing plate 1, a support frame 6 arranged on one side of the pressure equalizing electric bolt 4, a tensioning assembly 7 arranged on the support frame 6, a driving mechanism 8 arranged on the support frame 6, and a PLC controller 9 arranged on the support frame 6.

[0035] Referring to Figure 1 and Figure 2 , the electrolytic assembly 2 is used for hydrogen production, the fastening bolt 3 fixes the end pressure plate 1 and the electrolytic assembly 2 together, the equalizing electric bolt 4 can provide compensation pressure for the end pressure plate 1 in the low pressure area, thereby improving the stress uniformity of the reaction area, the pressure sensor 5 can collect the pressure data of the corresponding monitoring area in real time, and feed back the local stress condition of the end pressure plate 1 to the PLC controller 9, the support frame 6 provides support for the tensioning assembly 7 and the driving mechanism 8, the tensioning assembly 7 is used for screwing the equalizing electric bolt 4, the driving mechanism 8 is used for driving the tensioning assembly 7 to move, the PLC controller 9 can control the driving mechanism 8 to drive the tensioning assembly 7 to move, and also can control the tensioning assembly 7 to screw the equalizing electric bolt 4, the PLC controller 9 has the coordinate parameters of each equalizing electric bolt 4, and sets a threshold value for each equalizing electric bolt 4, the pressure sensor 5 detects the pressure of the end pressure plate 1 in real time, when the pressure value of the end pressure plate 1 at a certain position is lower than or exceeds the threshold value, the PLC controller 9 controls the driving mechanism 8 to carry the tensioning assembly 7 to loosen or tighten the equalizing electric bolt 4 at the corresponding position.

[0036] Referring to Figure 1 and Figure 2 , when the electrolytic cell is assembled, a plurality of equalizing electric bolts 4 are added to one of the end pressure plates 1, which can provide compensation for the smaller pressure area of the end pressure plate 1, improve the stress uniformity of the reaction area, and inhibit the poor contact caused by the deformation of the end pressure plate 1, and a plurality of pressure sensors 5 are arranged at the positions corresponding to the equalizing electric bolts 4 on the other end pressure plate 1, which divide the end pressure plate 1 into a plurality of monitoring areas, can collect the pressure data of each area in real time and transmit to the PLC controller 9, when the pressure value of a certain area on the end pressure plate 1 exceeds the threshold value preset by the PLC controller 9, the controller will immediately trigger the driving mechanism 8 to drive the tensioning assembly 7 to move accurately to the coordinate position of the corresponding equalizing electric bolt 4, then the tensioning assembly 7 adjusts the pressure by screwing the equalizing electric bolt 4, so that the stress of each area of the end pressure plate 1 returns to a balanced state.

[0037] Referring to Figure 3 and Figure 4 , the electrolytic assembly 2 includes a sealing member 201 arranged on the end pressure plate 1, a polar plate 202 arranged on the sealing member 201, an inner frame 203 opened in the polar plate 202, a diffusion layer 204 and an electrode 205 arranged in the inner frame 203. The sealing member 201 is used to prevent leakage of electrolyte, the polar plate 202 is used to realize current conduction for the electrolytic cell, the inner frame 203 is used as a flow channel for the electrolyte, and also provides space for the electrode 205 and the diffusion layer 204 to fix and work, the diffusion layer 204 is used to make the reaction gas distribution more uniform, and the electrode 205 is used to cooperate with the polar plate 202 to produce hydrogen.

[0038] With reference to Figure 3 and Figure 4 One side of the electrode 205 is provided with a diaphragm 11, an insulating plate 12 is arranged between the end pressing plate 1 and the electrode plate 202, and a wiring hole 13 is arranged on the electrode plate 202. The diaphragm 11 is used to separate the anode and cathode regions, prevent product mixing, and allow specific ions to pass through to maintain system electrical neutrality, ensuring that the electrolysis reaction is safe and efficient. The insulating plate 12 is used to block the leakage circuit, and the wiring hole 13 is used to connect the external power supply to provide power for the electrolytic cell.

[0039] With reference to Figure 1 and Figure 2 The driving mechanism 8 includes a support plate 10 that slides horizontally on the support frame 6, a first driving assembly 801 arranged on the support frame 6, and a second driving assembly 802 arranged on the support plate 10. The support plate 10 provides support for the second driving assembly 802 and the elastic component 7. The first driving assembly 801 is used to drive the support plate 10 and the elastic component 7 to move horizontally, and the second driving assembly 802 is used to drive the elastic component 7 to move vertically. When the equalizing electric bolt 4 needs to be adjusted, the PLC controller 9 controls the first driving assembly 801 and the second driving assembly 802 to move, and the first driving assembly 801 and the second driving assembly 802 move the elastic component 7 to the coordinate position of the equalizing electric bolt 4. Then, the elastic component 7 starts to adjust the equalizing electric bolt 4 under the control of the PLC controller 9.

[0040] With reference to Figure 5 and Figure 6 The first driving assembly 801 includes a first lead screw 8011, a guide rod 8012, and a first motor 8013. The first lead screw 8011 is rotationally connected to the support frame 6 and is used to drive the support plate 10 to move. The guide rod 8012 is arranged on the support frame 6 and is used to limit the movement of the support plate 10. The first motor 8013 is a servo motor and is installed on the support frame 6 to provide power for the first lead screw 8011. The first lead screw 8011 is coaxially rotationally connected to the first motor 8013, the support plate 10 is threadedly connected to the first lead screw 8011, and the support plate 10 is slidingly connected to the guide rod 8012. When the equalizing electric bolt 4 needs to be adjusted, the output shaft of the first motor 8013 drives the first lead screw 8011 to rotate, causing the support plate 10 threadedly connected to the first lead screw 8011 to move horizontally under the limitation of the guide rod 8012 until the support plate 10 and the elastic component 7 are moved to the specified position.

[0041] With reference to Figure 1 and Figure 2The second driving assembly 802 comprises a second screw rod 8021, a mounting plate 8022 and a second motor 8023. The second screw rod 8021 is rotationally connected to the support plate 10 and is used to drive the mounting plate 8022 to move. The mounting plate 8022 is slidingly connected to the support plate 10 and is used to provide support for the tensioning assembly 7. The second motor 8023 is installed on the support plate 10 and is used to provide power for the second screw rod 8021. The second screw rod 8021 is coaxially rotationally connected to the second motor 8023. The mounting plate 8022 is threadedly connected to the second screw rod 8021. The second motor 8023 is a servo motor. When the voltage equalizing electric bolt 4 needs to be adjusted, the support plate 10 moves in the horizontal direction. At the same time, the second motor 8023 drives the second screw rod 8021 to rotate, so that the mounting plate 8022 threadedly connected to the second screw rod 8021 moves vertically with the tensioning assembly 7 until the tensioning assembly 7 moves to a specified position in the vertical direction.

[0042] With reference to Figure 2 The tensioning assembly 7 comprises an electric telescopic rod 701, a push plate 702, a third motor 703 and a sleeve 704. The electric telescopic rod 701 is installed on the mounting plate 8022 and is used to push the push plate 702, the third motor 703 and the sleeve 704 to move. The push plate 702 is arranged at the telescopic end of the electric telescopic rod 701 and is used to install the third motor 703. The third motor 703 is installed on the push plate 702 and is used to provide power for the sleeve 704. The third motor 703 is a servo motor. The sleeve 704 is installed on the output shaft of the third motor 703 and is used to screw the voltage equalizing electric bolt 4. After the tensioning assembly 7 is sent to the specified position, the telescopic end of the electric telescopic rod 701 is extended and pushes the push plate 702, so that the sleeve 704 is sleeved with the voltage equalizing electric bolt 4. Then, under the control of the PLC controller 9, the output shaft of the third motor 703 drives the sleeve 704 to rotate, thereby screwing the voltage equalizing electric bolt 4.

[0043] With reference to Figure 7 and Figure 8 The sleeve 704 slidingly has two clamping plates 14. The clamping plates 14 are provided with abutting assemblies 15. One side of the clamping plates 14 is provided with first springs 16. The inside of the sleeve 704 slidingly has a limiting block 17. One side of the limiting block 17 away from the clamping plates 14 is provided with second springs 18. The clamping plates 14 provide support for the abutting assemblies 15. The abutting assemblies 15 are used to clamp the voltage equalizing electric bolt 4. The first springs 16 are used to push the clamping plates 14 and the abutting assemblies 15 to reset, thereby facilitating clamping of the voltage equalizing electric bolt 4 next time. The limiting block 17 is used to push the clamping plates 14 and the abutting assemblies 15 to clamp the voltage equalizing electric bolt 4. The second springs 18 are used to push the limiting block 17 to reset.

[0044] With reference to Figure 7 and Figure 8When the sleeve 704 gradually moves towards the equalizing electric bolt 4, the equalizing electric bolt 4 pushes the limiting block 17 to move towards the direction close to the electric telescopic rod 701 and extrudes the second spring 18. In the process of movement of the limiting block 17, the limiting block 17 abuts against the clamping plate 14 and pushes the abutting assembly 15, so that the abutting assembly 15 gradually clamps the equalizing electric bolt 4 and extrudes the first spring 16. After clamping the equalizing electric bolt 4, the pressure sensor 5 collects the pressure data of the area of the end pressure plate 1 in real time and transmits the signal to the PLC controller 9. The PLC controller 9 carries out difference calculation according to the preset pressure threshold value and the current measured pressure value, converts the accurate rotation angle required by the third motor 703 through the built-in algorithm of the PLC controller 9. If the pressure is lower than the pressure threshold value, the PLC controller 9 instructs the third motor 703 to rotate forward by a specific number of turns, and the equalizing electric bolt 4 is screwed through the abutting assembly 15 to increase the pressure. If the pressure is higher than the pressure threshold value, the third motor 703 is instructed to rotate reversely by a corresponding number of turns, so that the equalizing electric bolt 4 is loosened to reduce the pressure. After the adjustment is completed, the electric telescopic rod 701 is retracted and drives the sleeve 704 to retreat. In the process of retreat of the sleeve 704, the second spring 18 gradually releases the elastic force to push the limiting block 17, so that the limiting block 17 is reset. In the process of resetting of the limiting block 17, the first spring 16 releases the elastic force to push the clamping plate 14 and the abutting assembly 15, so that the abutting assembly 15 no longer clamps the equalizing electric bolt 4.

[0045] With reference to Figure 8 and Figure 9 The abutting assembly 15 includes a connecting barrel 1501, a clamping rod 1502 and a third spring 1503. The connecting barrel 1501 is welded on one side of the clamping plate 14 to provide support for the clamping rod 1502, so that the clamping rod 1502 can be retracted into the connecting barrel 1501. The clamping rod 1502 is inserted into the inside of the connecting barrel 1501 to clamp the equalizing electric bolt 4. The distance between the two opposite clamping rods 1502 is greater than the circumscribed circle of the head of the equalizing electric bolt 4, so that the equalizing electric bolt 4 cannot be located between the two opposite clamping rods 1502 during the movement of the sleeve 704 towards the equalizing electric bolt 4, thereby preventing clamping failure. The third spring 1503 is arranged in the inside of the connecting barrel 1501. One end of the third spring 1503 is arranged at one end of the clamping rod 1502, and the other end of the third spring 1503 is arranged on the inner wall of the connecting barrel 1501. The third spring 1503 provides elastic force to the clamping rod 1502 to clamp the equalizing electric bolt 4, so that the clamping rod 1502 can clamp the equalizing electric bolt 4 with various angles.

[0046] With reference to Figure 8 and Figure 9When the limiting block 17 pushes the clamping plate 14, the clamping plate 14 drives the connecting cylinder 1501 and the clamping rod 1502 to move towards the equalizing electric bolt 4. When the clamping rod 1502 abuts against the equalizing electric bolt 4, the clamping rod 1502 moves towards the inside of the sleeve 704 and extrudes the third spring 1503. As the sleeve 704 gradually moves towards the equalizing electric bolt 4, the equalizing electric bolt 4 continues to push the limiting block 17, so that the limiting block 17 gradually approaches the electric telescopic rod 701. The limiting block 17 continues to push the clamping plate 14, so that the two clamping plates 14 are closer and closer, until the clamping rod 1502 clamps the equalizing electric bolt 4. After clamping, the equalizing electric bolt 4 is screwed by the third motor 703 to adjust the pressure of the end pressing plate 1 at this position, so as to ensure that the diaphragm 11 and the electrode 205 are tightly attached. After adjustment, the sleeve 704 is retracted under the drive of the electric telescopic rod 701. The second spring 18 releases the elastic force and pushes the limiting block 17. At this time, the first spring 16 pushes the clamping plate 14, so that the two clamping plates 14 gradually move away from each other, and the clamping rod 1502 no longer clamps the equalizing electric bolt 4.

[0047] The implementation principle of the electrolytic cell end plate structure for reaction area pressure equalization provided in the embodiments of the present application is as follows: during the operation of the electrolytic cell, the pressure on the end pressure plate 1 is monitored in real time by the pressure sensor 5, and when the pressure value at a certain area on the end pressure plate 1 is lower than or higher than the threshold value in the PLC controller 9, the pressure sensor 5 transmits a signal to the PLC controller 9, and the PLC controller 9 immediately starts the first motor 8013, the first motor 8013 drives the first lead screw 8011 to rotate, so that the first lead screw 8011 drives the support plate 10 threaded on the first lead screw 8011 to move, the support plate 10 carries the second driving assembly 802 and the tensioning assembly 7 to move in the horizontal direction, and at the same time, the second motor 8023 drives the second lead screw 8021 to rotate, so that the second lead screw 8021 drives the mounting plate 8022 threaded on the second lead screw 8021 to move, and the tensioning assembly 7 is moved to the position of the pressure equalization electric bolt 4 that needs to be adjusted, then the telescopic end of the electric telescopic rod 701 is elongated and pushes the push plate 702, until the sleeve 704 is sleeved with the pressure equalization electric bolt 4, in the process of sleeving the sleeve 704 with the pressure equalization electric bolt 4, the pressure equalization electric bolt 4 abuts against the limiting block 17 and pushes the limiting block 17 to move in the direction of the electric telescopic rod 701, and at the same time, the limiting block 17 extrudes the second spring 18, in the process of moving the limiting block 17, the limiting block 17 pushes the clamping plate 14, the connecting barrel 1501 and the clamping rod 1502, so that the two clamping plates 14 gradually approach, until the clamping rod 1502 clamps the pressure equalization electric bolt 4, at this time, the electric telescopic rod 701 is no longer elongated, the third motor 703 drives the sleeve 704 to rotate under the control of the PLC controller 9, to adjust the tightness of the pressure equalization electric bolt 4, so as to suppress the bending deformation of the end pressure plate 1, ensure the uniform contact between the electrode 205 and the diaphragm 11, and make the current distribution uniform, after the adjustment of the pressure equalization electric bolt 4 is completed, the telescopic end of the electric telescopic rod 701 is retracted and drives the sleeve 704 to move, in the process of moving the sleeve 704, the second spring 18 releases the elastic force and pushes the limiting block 17 to reset, and then the first spring 16 pushes the clamping plate 14, so that the two clamping plates 14 gradually move away, and the clamping rod 1502 no longer clamps the pressure equalization electric bolt 4.

[0048] Unless otherwise defined, technical terms or scientific terms used in the present application shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Unless otherwise defined, the terms "first", "second" or "third" and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. The terms "one", "another", "an" or "some" as well as similar referents in the context of describing the specification and claims are to be construed to be open-ended, i.e., to cover both singular and plural referents unless otherwise indicated. The terms "including", "containing" or "comprising" and the like are not intended to exclude other integers or steps, but to "include" or "comprise" other integers or steps unless otherwise indicated. The terms "connected", "coupled" or "pathway" and the like are not limited to direct connections, couplings or pathways, but can also include indirect connections, couplings or pathways unless otherwise indicated.

[0049] The above are only preferred embodiments of the present application, not intended to limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. An electrolyzer end plate structure for reaction zone pressure equalization, comprising two end pressure plates (1), an electrolysis assembly (2) for electrolytic hydrogen production arranged between the two end pressure plates (1), characterized in that: Two said end pressing plates (1) are provided with fastening bolts (3), one of the end pressing plates (1) is provided with several equalizing electric bolts (4) for preventing the end pressing plate (1) from being deformed, the other end pressing plate (1) is provided with pressure sensors (5) corresponding to the equalizing electric bolts (4), one side of the equalizing electric bolts (4) is provided with a support frame (6), the support frame (6) is provided with a tightness adjusting assembly (7) for adjusting the tightness of the equalizing electric bolts (4), the support frame (6) is provided with a driving mechanism (8) for driving the tightness adjusting assembly (7) to move, the support frame (6) is further provided with a PLC controller (9) for controlling the driving mechanism (8) to drive the tightness adjusting assembly (7) to move and twist the equalizing electric bolts (4).

2. An electrolyzer end plate structure for equalizing pressure in a reaction zone as defined in claim 1, wherein: The driving mechanism (8) comprises a support plate (10) horizontally sliding on the support frame (6), a first driving assembly (801) arranged on the support frame (6) and driving the support plate (10) to horizontally slide, and a second driving assembly (802) arranged on the support plate (10) and driving the tightness adjusting assembly (7) to vertically move, wherein the tightness adjusting assembly (7) slides on the support plate (10).

3. An electrolyzer end plate structure for equalizing pressure in a reaction zone as defined in claim 2, wherein: The first driving assembly (801) comprises a first lead screw (8011) rotatably connected to the support frame (6), a guide rod (8012) arranged on the support frame (6), and a first motor (8013) arranged on the support frame (6), the first lead screw (8011) is coaxially rotatably connected to the first motor (8013), the support plate (10) is threadedly connected to the first lead screw (8011), and the support plate (10) is slidingly connected to the guide rod (8012).

4. An electrolysis cell end plate structure for equalizing pressure in a reaction zone as defined in claim 3, characterized in that: The second driving assembly (802) comprises a second lead screw (8021) rotatably connected to the support plate (10), a mounting plate (8022) vertically sliding on the support plate (10), and a second motor (8023) arranged on the support plate (10), the second lead screw (8021) is coaxially rotatably connected to the second motor (8023), the mounting plate (8022) is threadedly connected to the second lead screw (8021), and the first lead screw (8011) and the second lead screw (8021) are perpendicular to each other.

5. A cell end plate structure for equalizing pressure in the reaction zone of an electrolytic cell as defined in claim 2, characterized in that: The tightness adjusting assembly (7) comprises an electric telescopic rod (701) arranged on the mounting plate (8022), a push plate (702) arranged at the telescopic end of the electric telescopic rod (701), a third motor (703) mounted on the push plate (702), and a sleeve (704) arranged on the output shaft of the third motor (703), the electric telescopic rod (701) is perpendicular to the first lead screw (8011) and the second lead screw (8021).

6. A cell end plate structure for equalizing pressure in a reaction zone of an electrolytic cell as defined in claim 1, characterized in that: The electrolytic assembly (2) comprises sealing members (201) arranged on the two end pressing plates (1) respectively, polar plates (202) arranged on the sealing members (201), inner frames (203) opened on the polar plates (202), diffusion layers (204) arranged in the inner frames (203), and electrodes (205) arranged on the side of the diffusion layers (204) away from the polar plates (202).

7. A cell end plate structure for equalizing pressure in a reaction zone of an electrolytic cell as defined in claim 6, characterized in that: The electrode (205) is provided with a diaphragm (11) on the side away from the diffusion layer (204), and an insulating plate (12) is arranged between the end pressing plate (1) and the electrode plate (202) to block the leakage loop.

8. An electrolysis cell end plate structure for reaction zone pressure equalisation according to claim 7 wherein: The electrode plate (202) is provided with a wiring hole (13) for external power supply.

9. An electrolyzer end plate structure for equalizing pressure in a reaction zone as defined in claim 5, wherein: The sleeve (704) is slidably provided with two clamping plates (14) arranged opposite to each other, and the opposite surfaces of the two clamping plates (14) are provided with abutting assemblies (15) for clamping the equalizing electric bolt (4), one side of the clamping plate (14) is provided with a first spring (16) for pushing the clamping plate (14) to reset, the sleeve (704) is slidably provided with a limiting block (17) for pushing the clamping plate (14) to clamp the equalizing electric bolt (4), one side of the limiting block (17) away from the clamping plate (14) is provided with a second spring (18) for pushing the limiting block (17) to reset, one end of the second spring (18) is arranged on the inner wall of the sleeve (704), and the other end of the second spring (18) is arranged on one side of the limiting block (17) away from the clamping plate (14).

10. An electrolysis cell end plate structure for reaction zone pressure equalisation according to claim 9, characterised in that: The abutting assembly (15) comprises a plurality of connecting barrels (1501) fixed on the side wall of the clamping plate (14), clamping rods (1502) slidably arranged in the connecting barrels (1501), and third springs (1503) arranged in the connecting barrels (1501), the spacing between the two clamping rods (1502) is greater than the diameter of the circumscribed circle of the head of the equalizing electric bolt (4), one end of the third spring (1503) is arranged on the inner wall of the connecting barrel (1501), and the other end of the third spring (1503) is arranged on one end of the clamping rod (1502) close to the clamping plate (14).

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