Device for monitoring creep quantity of gasket in electrolytic cell

Abstract

The utility model discloses a device for monitoring creep quantity of a gasket in an electrolytic bath, which comprises a left-end pressing plate and a right-end pressing plate, a plurality of small electrolysis chambers are arranged between the left-end pressing plate and the right-end pressing plate, each small electrolysis chamber comprises two pole frames and a gasket arranged between the two pole frames, and the device further comprises an optical detector, the optical detector comprises at least one pair of emitter and receiver, the emitter and the receiver are respectively arranged at preset positions of the electrolytic bath and are used for detecting creep deformation of the gasket, and an optical detection signal between the emitter and the receiver is cut off when the gasket creeps and protrudes; the device for monitoring the creep quantity of the gasket in the electrolytic cell has the advantages of convenience in arrangement, low cost and quick response, avoids the tedious operation of stopping the machine for manual measurement in the prior art, and effectively reduces the maintenance cost. Safety can be remarkably improved, and potential safety hazards can be found in time by monitoring the creep quantity of the gasket in real time.

Description

Technical Field

[0001] The utility model relates to the technical field of water electrolysis hydrogen production equipment, in particular to a device for monitoring the creep amount of a gasket in an electrolytic cell. Background Art

[0002] A water electrolysis hydrogen production device is a device that decomposes water into hydrogen and oxygen. Its core component is the electrolyzer. Within the electrolyzer, water molecules are decomposed into hydrogen and oxygen under the action of electrical energy. A filter-press water electrolyzer is a special type of water electrolysis device that uses filter-press technology to achieve efficient water electrolysis. This design effectively improves the separation efficiency of hydrogen and oxygen, reduces the risk of gas mixing, and contributes to the overall energy efficiency of the system. Its structure consists of several stacked electrolyzer cells. The electrolyzer cells are the core units of a filter-press water electrolyzer, and each cell is an independent electrolysis reaction space responsible for decomposing water molecules into hydrogen and oxygen. Each cell is separated by a diaphragm (i.e., a gasket). An annular gasket is placed on the outer ring of the diaphragm, separating and sealing the cells between the two electrode plates. This ensures the separation of the electrolytes within each cell and prevents direct contact between substances of different polarities, which could cause short circuits or other adverse reactions.

[0003] However, under normal operating conditions, the gasket deforms due to the high temperature and high pressure inside the electrolyzer, as well as the internal gas-liquid collision. This can cause the gasket to bulge between the two pole frames. When the gasket creep reaches a certain level, it can cause the electrolyzer seal to fail, allowing electrolyte to leak from the electrolyzer. This not only wastes electrolyte but also potentially pollutes surrounding equipment and the environment. Gases (such as hydrogen and oxygen) generated during the electrolysis process can leak if the gasket deflects, causing the seal to fail, posing a risk of explosion and fire.

[0004] Currently, there are two mainstream methods for monitoring the creep of electrolytic cell gaskets. One is to measure the protruding distance manually with a tape measure when the electrolytic cell is shut down, and the other is to dismantle the electrolytic cell, take out the gasket, and test its creep using a tensile tester. Both of the above methods require shutting down the equipment to dismantle it. Manual measurement during shutdown delays normal use, and on the other hand, the electrolytic cell is still in a high-temperature state after operation, which poses a safety problem. Dismantling the electrolytic cell for sampling and testing increases maintenance costs and is time-consuming and labor-intensive.

[0005] In view of the above, it is necessary to propose a device for monitoring the creep amount of gaskets in an electrolytic cell to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to overcome the defects in the prior art and provide a device for monitoring the creep amount of gaskets in an electrolytic cell.

[0007] To achieve the above objectives, the technical solution of the present invention is as follows: a device for monitoring the creep of a gasket in an electrolytic cell, comprising a left-end pressure plate and a right-end pressure plate, wherein a plurality of electrolytic chambers are disposed between the left-end pressure plate and the right-end pressure plate, wherein the electrolytic chambers include two pole frames and a gasket disposed between the two pole frames, and an optical detector, wherein the optical detector includes at least one pair of a transmitter and a receiver, wherein the transmitter and the receiver are respectively disposed at preset positions in the electrolytic cell and are used to detect creep of the gasket, and when the gasket creeps and bulges, the optical detection signal between the transmitter and the receiver is blocked;

[0008] A data acquisition module, connected to the optical detector, for collecting signals from the sensor;

[0009] A programmable logic controller (PLC), connected to the data acquisition module, for processing the collected signals and performing logical judgment;

[0010] Human-machine interface (HMI), the PLC is connected to the HMI, and sensor data and alarm information are displayed in real time through the HMI;

[0011] an alarm device connected to the PLC and configured to send out an alarm signal when creep bulging of the gasket is detected;

[0012] The wireless communication module is connected to the PLC and is used to remotely transmit alarm information and monitoring data to the central monitoring system.

[0013] Furthermore, the optical detector is a laser beam switch sensor, which includes a transmitter and a receiver arranged in pair.

[0014] Furthermore, it also includes a bracket structure, which is respectively arranged on the pressure plates on both sides of the electrolytic cell, so that the transmitter and receiver are respectively arranged on the bracket structures on both sides and are opposite to each other so that the two transmit and receive detection light beams parallel to the axis of the electrolytic cell. The bracket structure also includes an insulating and heat-insulating pad.

[0015] Furthermore, the support structure can adjust the radial distance between the detection light beam and the axis of the electrolytic cell so that the distance between the detection light beam and the edge of the pole frame is ≥0.5 mm.

[0016] Furthermore, the support structure includes a base, a reflector, and an adjustment frame. The base is a base installed on the end pressure plate, so that the length direction of the base is set along the radial direction of the electrode plate. A reflector is set at one end of the base close to the axis of the electrolytic cell, and an adjustment frame is set at the other end. An optical detector is provided on the adjustment frame; the reflector forms a 45° angle with the axis of the electrolytic cell, and the direction of the light beam emitted by the emitter is perpendicular to the axis of the electrolytic cell. The light beam is irradiated on the mirror surface of the reflector and reflected to form a detection light beam parallel to the axis of the electrolytic cell. The adjustment frame controls the optical detector to adjust its position along the axis of the electrolytic cell.

[0017] Furthermore, it also includes a receiving end frame, the receiving end frame is provided with a convex lens, the convex lens is fixedly set on the base, and the receiver is set at the intersection position of the convex lens away from the transmitter side.

[0018] Furthermore, the optical detectors are arranged in a plurality of groups at intervals around the electrolytic cell.

[0019] Furthermore, the PLC is provided with a logic judgment program, and when it is detected that the light beam is blocked, it is determined that the gasket creep exceeds the limit, and the PLC also has a self-learning function, which can optimize the judgment threshold according to historical data.

[0020] A method for online monitoring of gasket creep in an electrolytic cell comprises the following steps: installing at least one pair of photoelectric beamforming switch sensors, comprising a transmitter and a receiver, at a preset position on an end pressure plate; acquiring signals from the photoelectric beamforming switch sensors via a data acquisition module; transmitting the acquired signals to a programmable logic controller (PLC); providing a logic judgment program in the PLC, and determining that the gasket creep exceeds a limit when an obstruction of the light beam is detected; displaying sensor data and alarm information in real time via a human-machine interface (HMI); triggering an audible and visual alarm when gasket deviation is detected, and notifying an operator via a notification system; and remotely transmitting the alarm information and monitoring data to a central monitoring system via a wireless communication module; the alarm device comprises an audible and visual alarm for emitting an audible and visual alarm signal when an excess of gasket creep is detected, and the alarm device also has a graded alarm function for emitting alarms of different levels depending on the degree of deviation.

[0021] The advantages and beneficial effects of the utility model are:

[0022] 1. The utility model provides a device for monitoring creep of gaskets in electrolytic cells, which has the advantages of easy installation, low cost and fast response, avoiding the tedious operation of manual measurement required by the prior art, and effectively reducing maintenance costs.

[0023] 2. It can significantly improve safety. By real-time monitoring of the creep of the gasket, potential safety hazards can be discovered in time, avoiding electrolyte leakage or gas leakage caused by gasket failure, thereby preventing accidents. When the gasket creep is detected to be out of limit, the system can automatically trigger the emergency stop procedure to prevent further damage.

[0024] 3. Through the data monitored by the system, the operator is helped to optimize the operating parameters of the electrolytic cell, such as current density, temperature, pressure, cooling water flow, etc., so as to achieve preventive and control operations.

[0025] 4. Sensors are set up at multiple locations around the electrolytic cell to conduct comprehensive and surrounding gasket status monitoring, which is suitable for complex working conditions and ensures safe operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall principle of a device for monitoring creep of gaskets in an electrolytic cell according to the utility model;

[0027] Figure 2 It is a schematic diagram of the structure of the electrolysis chamber in the electrolytic cell;

[0028] Figure 3 It is a schematic diagram of a detection light beam emitted by an optical detector in the present utility model;

[0029] Figure 4 This is a front view of the end pressure plate of the electrolytic cell in the utility model;

[0030] Figure 5 This utility model Figure 4 A schematic diagram of the structure enlarged in the middle;

[0031] Figure 6 This is a schematic structural diagram of the fifth embodiment of the present invention;

[0032] Figure 7 This is a schematic structural diagram of the sixth embodiment of the present invention;

[0033] In the figure: 1. Left end pressure plate; 2. Right end pressure plate; 3. Electrolysis chamber; 4. Electrode frame; 5. Gasket; 6. Electrode plate; 7. Electrode; 8. Diaphragm; 9. Optical detector; 10. Transmitter; 11. Receiver; 12. Detection beam; 13. Data acquisition module; 14. Programmable logic controller; 15. Logic judgment program; 16. Alarm device; 17. Human-machine interface; 18. Bracket structure; 19. Mounting base; 20. Insulation pad; 21. Sensor; 22. Base; 23. Screw; 24. Slider; 25. Motor; 26. Reflector; 27. Adjustment frame; 28. Electrolytic cell axis; 29. ​​Convex lens; 30. Horizontal frame. DETAILED DESCRIPTION

[0034] The following embodiments are used to further describe the specific embodiments of the present invention in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Example 1:

[0035] The filter press water electrolyzer comprises a left end pressure plate 1 and a right end pressure plate 2, wherein a plurality of electrolysis chambers 3 are provided between the left end pressure plate 1 and the right end pressure plate 2. Figure 2 、 3As shown, the electrolysis chamber 3 includes two pole frames 4 and a gasket 5 arranged between the two pole frames 4. The inner side of the pole frame 4 is a pole plate 6 with concave and convex nipples. Between the two pole plates 6 is a space for accommodating electrolyte. Two electrodes 7 are respectively arranged in the space. A diaphragm 8 is provided between the two electrodes 7. The outer periphery of the diaphragm 8 is connected to the gasket 5. In actual operation, the gasket 5 plays the role of sealing the electrolysis chamber 3. In actual work, the gasket 5 is deformed due to the high temperature and high pressure inside the electrolytic cell and the impact with the internal gas and liquid, so that the gasket 5 is squeezed and bulged, or the position of the pole frame 4 is offset. When the above-mentioned creep exceeds a certain range, it is very easy to cause leakage.

[0036] As a system for online monitoring of creep of gasket 5 in electrolytic cell, Figure 1 As shown, it includes an optical detector 9, which includes at least one pair of emitters 10 and receivers 11. The emitters 10 and receivers 11 are respectively arranged at preset positions of the electrolytic cell to detect the creep of the gasket 5. When the gasket 5 creeps and bulges, the optical detection signal between the emitter 10 and the receiver 11 is cut off;

[0037] Specifically, the optical detector 9 is a laser beam switch sensor 21, which includes a laser emitter 10 and a laser signal receiver 11 arranged in pairs. The emitter 10 emits a detection beam 12 and the corresponding receiver 11 receives it. Figure 3 As shown, the detection beam 12 is set close to the edge of the gasket 5. When the equipment is running, under improper working conditions or due to long-term use, the pole frames 4 on both sides cause excessive extrusion of the gasket 5 or the air pressure in the electrolysis chamber 3 causes the gasket 5 to creep and bulge. The protruding part of the gasket 5 will block the detection beam 12. The detection beam 12 is blocked by the gasket 5, and the optical sensor 21 sends a corresponding feedback signal to the data acquisition module 13.

[0038] The data acquisition module 13 is connected to the optical detector 9 and is used to collect signals from the sensor 21. The data acquisition module 13 is connected to the photoelectric switching sensor 21 through an analog input module to transmit the signal to the PLC. The data acquisition module 13 has data filtering and preprocessing functions to reduce interference.

[0039] Programmable logic controller 14 (PLC), such as Figure 1As shown, the PLC is connected to the data acquisition module 13 and is used to process the collected signals and perform logical judgments. The PLC is provided with a logical judgment program 15. When it detects that the light beam is blocked, it determines that the gasket 5 has exceeded the creep limit. The PLC also has a self-learning function and can optimize the judgment threshold based on historical data. In actual use, the PLC can compare the real-time monitoring value with the preset alarm value. Specifically, the creep value can be set to 0.5mm, 1mm, or more than 1mm, that is, when the gasket 5 protrudes more than 0.5mm, an alarm is triggered. The PLC triggers an alarm when it detects data anomalies, and the alarm device 16 also has a graded alarm function, issuing different levels of alarms according to the degree of deformation of the gasket 5. The alarm device 16 corresponds to different alarm forms corresponding to different degrees of protrusion of the gasket 5.

[0040] Human-machine interface 17 (HMI), the PLC is connected to the human-machine interface 17, and the sensor 21 data and alarm information are displayed in real time through the human-machine interface 17; the alarm value in the logic judgment program 15 in the PLC is set through the human-machine interface 17, and the creep monitoring alarm value of the gasket 5 can be adjusted according to the actual operating conditions of the equipment. In addition, the human-machine interface 17 can intuitively display the operating status and real-time monitoring data of several groups of optical detectors 9 installed around the electrolytic cell.

[0041] The wireless communication module is connected to the PLC and is used to remotely transmit alarm information and monitoring data to the central monitoring system, thereby enabling centralized management and remote monitoring of multiple electrolytic cells through the central monitoring system. Example 2:

[0042] It also includes a support structure 18, which is respectively arranged on the pressure plates at both sides of the electrolytic cell. Figure 3 As shown, the transmitter 10 and the receiver 11 are respectively arranged on the support structures 18 on both sides and are arranged opposite to each other so that the detection light beam 12 parallel to the axis 28 of the electrolytic cell is emitted and received between them. The electrolytic cell includes a plurality of electrolytic chambers 3 stacked in sequence. The outer sides of the electrolytic chambers 3 at both ends are respectively a left end pressure plate 1 and a right end pressure plate 2. The diameters of the two end pressure plates are larger than the diameter of the pole frame 4. Figure 4 As shown, the portion where the end pressure plate is larger than the pole frame 4 forms a mounting base 19 for the mounting bracket structure 18, and a laser beam switch sensor 21 is provided at a position opposite to the end pressure plates on both sides.

[0043] In this embodiment, the edge of the end pressure plate can be in the shape of an arc concentric with the electrode plate 6, such as Figure 4As shown, the sensor 21 is set on the installation base 19. It can be understood that an insulating and heat-insulating pad 20 for insulation and heat insulation functions is provided on the surface of the end pressure plate, and the sensor 21 is fixedly installed on the heat-insulating pad. The transmitter 10 and the receiver 11 are respectively provided on the end pressure plates on both sides to form a group of detection points for the electrolytic cell gasket 5. It can be understood that in this embodiment, multiple detection points can be added around the electrolytic cell, so that the optical detector 9 is arranged at intervals around the circumference of the electrolytic cell, so that each detection point monitors the deformation of the gasket 5 at the corresponding position, thereby achieving detection of all four sides of the electrolytic cell. For example, six groups of laser beam sensors 21 are installed on the electrolytic cell at equal angles of 60°. Figure 4 can also be installed every 30 ° a group of workers can be installed around 12 groups of sensors 21, set the number of groups should be an even array, and ensure that the symmetrical position of the arrangement on the circumference. Example 3:

[0044] For example, when the gasket 5 is extruded by 0.5mm, a first-level alarm is issued, which can remind the operator to check the equipment operation status on site. If the equipment is running well and there is no abnormality such as leakage, the power, current density, temperature, pressure, cooling water flow, etc. can be adjusted through process control to continue observing the operation of the electrolytic cell and observe the changes of the gasket 5 at the alarm position; in order to achieve graded alarms, such as Figure 3 As shown in the three groups of parallel detection beams 12 shown in the lower position, multiple groups of laser beam sensors 21 can be set at each monitoring point to alarm separately for different heights of gasket 5 extrusion, that is, the group closest to the pole frame 4 will alarm for gasket 5 protruding 0.5mm, the middle group will alarm for gasket 5 protruding 1mm, and the outermost group will alarm for gasket 5 protruding 1.5mm; specifically, after the first-level alarm has been issued at the aforementioned gasket 5 extrusion position, after adjusting the equipment operating parameters for a period of time and observing the operation, a second-level alarm will be further issued there, that is, the protrusion height of gasket 5 on the corresponding side of the electrolytic cell reaches 1mm, then personnel will need to enter the site again for inspection and evaluation, and determine whether the electrolytic cell is suitable for continued operation or shutdown and maintenance based on the on-site evaluation results. Similarly, a gasket 5 protruding 1.5mm can be used for emergency interlock alarm, that is, when it is detected that the gasket 5 protrudes 1.5mm, a third-level alarm can be issued and the equipment interlock emergency stop program can be started.

[0045] In the above-mentioned setting method, that is, setting multiple groups of laser beam sensors 21 at each monitoring point, it may be hindered by the size limitation of the mounting base surface 19 formed by the edge of the end pressure plate; as a preferred embodiment, a group of laser beam sensors 21 can be selected to be set, and the laser beam sensor 21 has multiple laser channels, and the multiple laser channels are arranged at intervals and at intervals, so that the multiple laser channels can be set to alarm at different protrusion heights of the corresponding gasket 5. Example 4:

[0046] In the aforementioned embodiment, in order to realize a multi-level alarm at a detection point, multiple groups of laser beam sensors 21 are set at each detection point. Although the multi-level alarm is realized, the cost is greatly increased. Another embodiment is to use a laser beam sensor 21 with multiple laser channels, which also increases the cost. As an improvement, the bracket structure 18 can adjust the radial distance between the detection beam 12 and the axis 28 of the electrolytic cell. Specifically, by controlling the position of the laser beam sensor 21, multiple uses of one device can be achieved. At this time, only one laser channel is used. In this embodiment, the bracket structure 18 includes a base 22 on the end pressure plate. The base 22 is arranged radially, such as Figure 5 As shown, a screw 23 is rotatably provided on the base 22, a slider 24 is slidably provided on the base 22, and a sensor 21 is provided on the slider 24. The slider 24 is threadedly connected to the screw 23, and a motor 25 for driving the screw 23 to rotate is provided on one side of the base 22. When the motor 25 drives the screw 23 to rotate, the sensor 21 can be controlled to move radially, thereby changing the monitoring position of the height of the gasket 5 protrusion to achieve multi-level alarm. In actual use, the sensor 21 is driven by the screw 23 to be located at the position closest to the pole frame 4. When the gasket 5 protrudes and causes the detection point to issue a first-level alarm, the PLC controls the motor 25 of the detection point to operate, and controls the sensor 21 to move to the detection position corresponding to the next-level alarm, and so on. In addition, the present embodiment can realize that the sensor 21 stays at any position within the length of the screw 23, thereby realizing more refined monitoring of the gasket 5, not limited to the three alarm positions of the aforementioned embodiment. Embodiment 5:

[0047] It can be seen from the above embodiments that in order to detect and alarm the creep of the gasket 5 in advance, the first-level alarm is to issue an alarm when the protrusion of the gasket 5 reaches 0.5 mm, so the laser beam sensor 21 is installed close to the pole frame 4. It is understandable that this inevitably makes the installation position of the laser beam sensor 21 extremely narrow, and since the emitter 10 itself has a certain diameter, it is almost impossible to emit a detection light beam 12 parallel to the axis at 0.5 mm outside the pole frame 4 after installation. Moreover, even if it can be installed, since the electrolytic cell will generate a certain temperature during operation, it will accelerate the aging speed of the laser beam sensor 21 under long-term high-temperature baking.

[0048] As an improvement, the support structure 18 of this embodiment includes a base 22, a reflector 26, and an adjustment frame 27. Figure 6As shown, the base 22 is a base mounted on the end pressure plate, and an insulating heat-insulating pad 20 can be set at the bottom of the base 22. Similarly, the length direction of the base 22 is set along the radial direction of the electrode plate 6. A reflector 26 is set at one end of the base 22 close to the axis 28 of the electrolytic cell, and an adjustment frame 27 is set at the other end. An optical detector 9 is provided on the adjustment frame 27. The edge of the reflector 26 close to the axis side can be infinitely close to the pole frame 4 or even be set on the surface of the pole frame 4, and will not be affected by the temperature of the pole frame 4, and the optical detector 9 at the other end can be set at a farther position; in this way, the optical detector 9 can be set at a certain distance away from the pole frame 4 with a higher temperature to avoid high-temperature baking.

[0049] Specifically, the reflector 26 forms an angle of 45° with the electrolytic cell axis 28, and the direction of the light beam emitted by the emitter 10 is perpendicular to the electrolytic cell axis 28. Figure 6 As shown, when the transmitter 10 emits a vertical light beam to the reflector 26, the reflector 26 reflects a detection light beam 12 parallel to the axis 28 of the electrolytic cell. In this embodiment, the reflector 26 and the adjustment frame 27 can be similarly provided at one end of the receiver 11, and the receiver 11 is provided on the adjustment frame 27. The transmitter 10 or the receiver 11 is controlled to change its position axially to a corresponding position by telescopic movement of the adjustment frame 27. As an embodiment, the adjustment frame 27 can be controlled by an electric telescopic rod to achieve precise control of the positions of the transmitter 10 and the receiver 11.

[0050] In actual alarm control logic, the following can be achieved: first, the adjustment racks 27 on both sides are extended to the far end, so that the formed detection beam 12 is closest to the first-level alarm position of the pole frame 4, that is, 0.5mm from the edge of the pole frame 4. Once the gasket 5 creeps and bulges out during detection, reaching 0.5mm to block the detection beam 12, the PLC can control the adjustment racks 27 on both sides to retract to the position as shown in the figure. Figure 6 In the middle position, it can correspond to the secondary alarm position at a distance of 1mm in actual use, so that self-learning control can be formed. Of course, other control signals of the PLC, such as issuing an alarm signal and transmitting the signal to the human-machine interface 17, are not affected as described in the above embodiment; when the transmitter 10 and the receiver 11 on both sides are changed to be in the secondary alarm position by adjusting the frame 27, secondary monitoring can be performed; similarly, for example, if the creep of the gasket 5 intensifies to 1mm, the secondary alarm can be triggered, and so on; in this embodiment, the number of alarm levels set in actual use can be increased or decreased, and the distance when the alarm is issued can be preset within a certain range on the PLC, so that the alarm is not limited to being issued at the positions of 0.5mm, 1mm, and 1.5mm. Example 6:

[0051] As an improved implementation of the fifth embodiment, the support structure 18 of the receiving end can be modified, and the transmitting end can still adopt the design of the fifth embodiment, or can also adopt the design of the fourth embodiment. In this embodiment, a convex lens 29 is provided on the receiving end frame, and the convex lens 29 is fixedly mounted on the base 22. The receiver 11 is located at the intersection of the convex lens 29 away from the transmitter 10. Figure 7 As shown, the base 22 of the receiving end is provided with a horizontal cross-bracket 30 at its upper end, extending toward the transmitting end. A convex lens 29 is fixedly suspended at the lower front end of the cross-bracket 30. The transmitting end, by controlling the adjustment bracket 27, can emit detection beams 12 at various positions to illuminate the convex lens 29. The position of the receiver 11, located at the intersection of the other end of the convex lens 29, can be fixed, and only the position of the adjustment bracket 27 at the transmitting end needs to be adjusted, thereby simplifying the adjustment control. In this embodiment, the position control of the adjustment bracket 27 at the transmitting end can be used to implement alarm settings corresponding to different levels.

[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A device for monitoring gasket creep in an electrolytic cell, comprising a left-end pressure plate and a right-end pressure plate, wherein a plurality of electrolysis chambers are provided between the left-end pressure plate and the right-end pressure plate, wherein the electrolysis chambers include two pole frames and a gasket provided between the two pole frames, characterized in that: The invention comprises an optical detector, which comprises at least one pair of emitters and receivers, and the emitters and receivers are respectively arranged at preset positions of the electrolytic cell. The invention also comprises a bracket structure, and the bracket structures are respectively arranged on the end pressure plates on both sides of the electrolytic cell, so that the emitters and receivers are respectively arranged on the bracket structures on both sides in an opposite arrangement so that the two emit and receive detection light beams parallel to the axis of the electrolytic cell; the diameter of the end pressure plate is larger than the diameter of the pole frame, and the mounting base surface for mounting the bracket structure is formed at the part where the end pressure plate is larger than the pole frame.

2. The device for monitoring creep of gaskets in electrolytic cells according to claim 1, characterized in that: The optical detector is a laser beam switch sensor, which includes a transmitter and a receiver arranged in pair.

3. The device for monitoring creep of gaskets in electrolytic cells according to claim 2, characterized in that: The support structure further comprises an insulating and heat-insulating pad, which is arranged on the bottom surface of the direct structure on one side close to the end pressure plate.

4. The device for monitoring creep of gaskets in electrolytic cells according to claim 3, characterized in that: The support structure can adjust the radial distance between the detection light beam and the axis of the electrolytic cell so that the distance between the detection light beam and the edge of the pole frame is ≥0.5mm.

5. The device for monitoring creep of gaskets in electrolytic cells according to claim 4, characterized in that: The support structure includes a base, a reflector, and an adjustment frame. The base is a substrate installed on the end pressure plate, so that the length direction of the base is arranged along the radial direction of the electrode plate. A reflector is arranged at one end of the base close to the axis of the electrolytic cell, and an adjustment frame is arranged at the other end. An optical detector is provided on the adjustment frame; the reflector forms a 45° angle with the axis of the electrolytic cell, and the direction of the light beam emitted by the emitter is perpendicular to the axis of the electrolytic cell. The light beam is irradiated on the mirror surface of the reflector and reflected to form a detection light beam parallel to the axis of the electrolytic cell. The adjustment frame controls the optical detector to adjust its position along the axis of the electrolytic cell.

6. The device for monitoring creep of gaskets in an electrolytic cell according to claim 5, characterized in that: It also includes a receiving end frame, which is provided with a convex lens fixed on the base, and the receiver is arranged at the intersection of the convex lens away from the transmitter.

7. The device for monitoring creep of gaskets in an electrolytic cell according to claim 2, characterized in that: The optical detectors are arranged in a plurality of groups at intervals around the electrolytic cell.

8. The device for monitoring creep of gaskets in an electrolytic cell according to claim 2, characterized in that: Six groups of laser beam sensors are installed on the electrolytic cell at equal angles of 60° and arranged at symmetrical positions on the circumference.

9. The device for monitoring creep of gaskets in an electrolytic cell according to claim 2, characterized in that: Six groups of laser beam sensors are installed on the electrolytic cell at equal angles of 30° and arranged at symmetrical positions on the circumference.

Images