Distance measurement monitoring system for water electrolysis hydrogen production device

Abstract

The utility model discloses a distance measurement monitoring system for a water electrolysis hydrogen production device, which comprises a detection signal transmitting module or a detection signal receiving module arranged on a preset monitoring point position, and further comprises a time measurement module and a data processing module, when the detection signal transmitting module transmits a detection signal and the detection signal receiving module receives the detection signal, a trigger signal is generated to the time measuring module, and the data processing module calculates the distance l of a monitored part according to the time interval t and the propagation speed v of the detection signal; the device detects the distance between two preset monitoring points through ultrasonic waves, laser, radar and the like, has on-line monitoring and interlocking functions, is beneficial to automatic control of equipment, and can early warn possible leakage of the electrolytic bath when the compensation capability of the disc spring is insufficient due to large size change, so that the service life of the electrolytic bath is prolonged. The ultrasonic ranging fixed-point detection system used by the device can measure without contact, and is high in precision, quick in response and strong in anti-interference capability.

Description

Technical Field

[0001] The utility model relates to the technical field of water electrolysis hydrogen production equipment, in particular to a distance measurement and monitoring system for a water electrolysis hydrogen production device. 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 specialized 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 improved energy efficiency of the overall system. Its structure consists of several stacked electrolyzer chambers. These chambers are the core unit of a filter-press water electrolyzer, each serving as an independent electrolysis reaction space responsible for decomposing water molecules into hydrogen and oxygen. Its structural components include an anode plate, a cathode plate, a diaphragm, an electrolyte, and a gas collection channel. The anode plate, typically made of corrosion-resistant materials such as titanium, nickel, or a catalyst-coated titanium mesh, serves as the positive electrode, where the oxidation reaction occurs, with water molecules losing electrons to produce oxygen. The cathode plate is also made of corrosion-resistant materials such as titanium, nickel, or a catalyst-coated titanium mesh. It serves as the negative electrode, where a reduction reaction occurs, with water molecules gaining electrons to generate hydrogen. Commonly used diaphragms include ion exchange membranes, porous ceramics, or microporous plastic membranes. Located between the anode and cathode plates, the diaphragm allows ions in the water to pass through but prevents hydrogen and oxygen from mixing, ensuring gas separation. Common electrolytes include alkaline solutions (such as KOH or NaOH) and acidic solutions (such as sulfuric acid). They provide the ions required for electrolysis, reducing resistance and improving electrolysis efficiency. Gas collection channels are dedicated gas collection channels located on the anode and cathode plates to guide the generated hydrogen and oxygen out of the chamber. These channels ensure smooth gas discharge, prevent gas accumulation within the chamber, and enhance safety.

[0003] As shown in a filter press alkaline water electrolyzer disclosed in application number: CN202321594795.4, it includes a left-end pressure plate and a right-end pressure plate, an intermediate plate is provided between the left-end pressure plate and the right-end pressure plate, a left-end pole frame and several left pole frames are provided between the left side of the intermediate plate and the left-end pressure plate, a sealing gasket and a diaphragm are provided between two adjacent left pole frames, several right pole frames and a right-end pole frame are provided between the right side of the intermediate plate and the right-end pressure plate, a sealing gasket and a diaphragm are provided between two adjacent right pole frames, the left-end pressure plate, the intermediate plate and the right-end pressure plate are tightened by multiple long bolts to form the electrolyzer body, one end of the long bolt is provided with a disc spring assembly, and the other end is provided with a constant pressure hydraulic compensation system.

[0004] In summary, filter-press water electrolyzers are prone to the following problems during operation. During operation, the large number of stacked electrolysis chambers makes the cell longer. The electrolysis reaction releases heat, causing the internal cell temperature to rise. This temperature change not only affects electrolysis efficiency and gas production, but also causes structural changes in the cell, particularly axial length expansion and contraction.

[0005] Temperature fluctuations affect the materials used in electrolytic cell equipment. Different materials have different thermal expansion coefficients. Common electrolytic cell materials, such as titanium, stainless steel, and ceramics, each have their own thermal expansion coefficients. Specifically, the linear expansion coefficient of titanium is approximately 8.6×10^-6 / °C, while that of stainless steel is approximately 17×10^-6 / °C. When the electrolytic cell temperature rises, the material expands axially; when the temperature drops, the material contracts. Axial expansion and contraction significantly impact the sealing performance, electrode spacing, and diaphragm performance of the electrolytic cell. Axial expansion and contraction can cause stress changes in electrolytic cell seals (such as gaskets and sealing rings), compromising sealing effectiveness. If the seals cannot adapt to the expansion and contraction caused by temperature fluctuations, electrolyte leakage or gas escape may occur, impacting system safety and reliability. Axial expansion and contraction affect the distance between the anode and cathode plates, known as the electrode spacing. Changes in the electrode spacing affect the electrolytic cell's electrical resistance, which in turn affects electrolysis efficiency and energy consumption. Increasing the electrode spacing increases resistance and reduces electrolysis efficiency, and vice versa. Axial expansion and contraction of the diaphragm may affect its physical and chemical properties. If the diaphragm material cannot adapt to the expansion and contraction caused by temperature changes, it may rupture or deform, affecting the separation of hydrogen and oxygen. Furthermore, under normal operating conditions, the disc springs in the electrolytic cell fasteners may become severely deformed due to prolonged use and excessive loads, resulting in increased spacing between the cells and leakage.

[0006] Therefore, it is particularly important to measure the distance between the key components of the water electrolyzer when it is working. Currently, most electrolyzer distance measurement methods use manual tape measures. On the one hand, the measurement accuracy is insufficient, and on the other hand, manual measurement may touch the electrolyzer, causing safety problems.

[0007] In view of the above, it is necessary to propose a distance measurement monitoring system for a water electrolysis hydrogen production device to solve the above problems. Utility Model Content

[0008] The purpose of the utility model is to overcome the defects in the prior art and provide a distance measurement and monitoring system for a water electrolysis hydrogen production device.

[0009] To achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a distance measurement and monitoring system for a water electrolysis hydrogen production device, comprising a left-end pressure plate and a right-end pressure plate, a plurality of electrolysis chambers are arranged between the left-end pressure plate and the right-end pressure plate, the left-end pressure plate, the middle plate and the right-end pressure plate are tightened and overlapped with the plurality of electrolysis chambers by a plurality of long bolts to form an electrolytic cell body, a disc spring assembly is provided at one end of the long bolt, preset monitoring points are provided in pairs on the monitoring part of the electrolytic cell body, and also includes a detection signal transmitting module or a detection signal receiving module arranged at the preset monitoring point, the detection signal transmitting module is used to send a detection signal for non-contact measurement, and the detection signal receiving module is used to receive the detection signal; also includes a time measurement module and a data processing module; the detection signal transmitting module sends a detection signal and detects Upon receiving a detection signal, the detection signal receiving module generates a trigger signal to the time measurement module. The time measurement module calculates the time interval t between the two trigger signals as the flight time of the detection signal. The data processing module calculates the spacing l between the monitoring parts based on the time interval t and the detection signal propagation speed v. The module also includes a temperature detection unit that monitors the temperature of the electrolytic cell body and measures the electrolytic cell body temperature T while performing distance detection. The module also includes a comparison processing system, which has a preset database of theoretical spacings L of corresponding monitoring points at different electrolytic cell body temperatures. The comparison processing system receives the electrolytic cell body temperature T and the calculated spacing l, compares them with the range of theoretical spacing L for corresponding temperatures in the database, and triggers an alarm system when the spacing l exceeds the range of theoretical spacing L.

[0010] Furthermore, the detection signal transmitting module is an ultrasonic ranging sensor, a laser ranging sensor or a radar ranging sensor.

[0011] Furthermore, the comparison processing system is connected to the PLC control system of the electrolysis hydrogen production device, so that the PLC control system of the electrolysis hydrogen production device triggers the corresponding interlock according to the comparison processing results; or the PLC control system of the electrolysis hydrogen production device issues a detection command to trigger the distance measurement monitoring system to conduct regular detection.

[0012] Furthermore, the detection signal transmitting module and the detection signal receiving module are located at the same preset monitoring point, and a reflective component is provided at another preset monitoring point corresponding to the preset monitoring point.

[0013] Furthermore, the detection signal transmitting module and the detection signal receiving module are respectively arranged at two preset monitoring points of the monitoring area.

[0014] Furthermore, a positioning frame structure for setting up a detection signal transmitting module or a detection signal receiving module is provided at the preset monitoring point.

[0015] An application of a distance measurement monitoring system for a water electrolysis hydrogen production device, wherein a positioning frame structure is set on the left end pressure plate and the right end pressure plate, and a distance measurement monitoring system is used to monitor the distance change between the two end pressure plates.

[0016] An application of a distance measurement monitoring system for a water electrolysis hydrogen production device, wherein a positioning frame structure is set on any end pressure plate, and another positioning frame structure is set on the pole frame of a certain electrolysis chamber, and a distance measurement monitoring system is used to monitor the distance change between the end pressure plate and the predetermined electrolysis chamber.

[0017] An application of a distance measurement monitoring system for a water electrolysis hydrogen production device, wherein positioning frame structures are respectively provided on the insulating pads on both sides of the disc spring assembly at the end of a long bolt, and the distance measurement monitoring system is used to monitor the dimensional changes of the disc spring assembly.

[0018] The advantages and beneficial effects of the present invention are as follows: the present invention is a measuring device which can autonomously or automatically monitor online the electrolytic cell body (internal spacing of the end pressure plates) and / or the size change of the electrolytic cell disc spring during the operation process of the electrolytic cell. The present invention detects the distance between two preset monitoring points by non-contact means such as ultrasound, laser, and radar, and has online monitoring and interlocking functions, which is beneficial to automatic control of the equipment. When the size change is large and the disc spring compensation capacity is insufficient, an early warning of possible leakage of the electrolytic cell can be given. The ultrasonic ranging fixed-point detection system used in the device can measure without contact, has high precision, fast response, and strong anti-interference ability, and is directly connected to the PLC control system of the electrolytic hydrogen production device to carry out a chain reaction to protect the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is one of the overall principle diagrams of a distance measurement and monitoring system for a water electrolysis hydrogen production device of the present utility model;

[0020] Figure 2 This is the second overall principle diagram of a distance measurement and monitoring system for a water electrolysis hydrogen production device of the present invention;

[0021] Figure 3 This is a schematic diagram of the installation structure of a distance measurement and monitoring system for a water electrolysis hydrogen production device of the utility model;

[0022] Figure 4 This is a schematic diagram of the installation of the positioning frame structure in the fifth embodiment of the present utility model;

[0023] Figure 5 This utility model Figure 4 Schematic diagram of the structure of the AA section;

[0024] Figure 6 This is a schematic diagram of the installation of the positioning frame structure in the sixth embodiment of the present utility model;

[0025] Figure 7 This utility model Figure 6 Schematic diagram of the structure of the AA section;

[0026] Figure 8 This is a schematic diagram of the installation of the positioning frame structure in the seventh embodiment of the present utility model;

[0027] Figure 9 This utility model Figure 7 Schematic diagram of the structure of the AA section;

[0028] In the figure: 1. Electrolytic cell body; 2. Left end pressure plate; 3. Right end pressure plate; 4. Long bolt; 5. Disc spring assembly; 6. Preset monitoring point; 7. Detection signal transmitting module; 8. Detection signal receiving module; 9. Distance measurement monitoring system; 10. Reflection component; 11. Positioning frame structure; 12. Card slot; 13. First side panel; 14. Second side panel; 15. Bottom plate; 16. U-shaped bayonet; 17. Fastening bolt; 18. Reinforcement rib; 19. Guide rail; 20. Slider; 21. Vertical plate; 22. Nut; 23. Adjustment screw; 24. Arc base plate; 25. First articulated arm; 26. Second articulated arm; 27. Positioning screw; 28. Threaded hole; 29. ​​Sensor; 30. Insulation pad; 31. Ring; 32. Pole frame. DETAILED DESCRIPTION

[0029] 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.

[0030] Example 1:

[0031] A ranging monitoring system for a water electrolysis hydrogen production device includes a left-end pressure plate 2 and a right-end pressure plate 3, wherein a plurality of electrolysis chambers are provided between the left-end pressure plate 2 and the right-end pressure plate 3, and the left-end pressure plate 2, the middle plate and the right-end pressure plate 3 are tightened and overlapped with the plurality of electrolysis chambers by a plurality of long bolts 4 to form an electrolytic cell body 1, wherein a disc spring assembly 5 is provided at one end of the long bolt 4, and preset monitoring points 6 are provided in pairs on the monitoring part of the electrolytic cell body 1, and further includes a detection signal transmitting module 7 or a detection signal receiving module 8 provided at the preset monitoring point 6, and the detection signal transmitting module 7 is used to send a detection signal for non-contact measurement. In this embodiment, the detection signal transmitting module 7 and the detection signal receiving module 8 are placed at the same end, and the detection target is located at another relative preset monitoring point 6, such as Figure 3As shown, the detection signal transmitting module 7 and the detection signal receiving module 8 are located at the same preset monitoring point 6, and the other preset monitoring point 6 corresponding to the preset monitoring point 6 is provided with a reflective component 10. The detection signal transmitting module 7 is an ultrasonic ranging sensor 29, and this embodiment is based on the pulse echo method, such as Figure 1 As shown, the trigger signal from the control circuit stimulates the detection signal transmitting module 7 to generate an ultrasonic pulse. At this moment, the system simultaneously generates a start signal that is transmitted to the time measurement module. The ultrasonic wave is transmitted to an object and, when it is blocked by the object, generates a pulse back. The detection signal receiving module 8 is configured to receive the detection signal. The detection signal receiving module 8 receives the signal and simultaneously sends an end signal to the time measurement module. That is, the detection signal transmitting module 7 generates a trigger signal to the time measurement module simultaneously with the detection signal transmission and the detection signal receiving module 8 receiving the detection signal. The time measurement module digitizes the two signals and calculates the time difference. The time measurement module calculates the time interval t between the two trigger signals as the flight time of the detection signal, thereby matching the flight time of the ultrasonic wave. Combined with the speed of sound v (the speed of sound in air can be calculated, assuming a constant air temperature of 15°C and a speed of sound of approximately 340 m / s), the distance l between the signal transmitting end and the target is the distance l between the two preset monitoring points 6. The data processing module calculates the spacing l between the monitoring locations based on the time interval t and the detection signal propagation speed v, as shown in the following formula.

[0032]

[0033] It also includes a temperature detection unit that monitors the temperature of the electrolytic cell body 1, and measures the temperature T of the electrolytic cell body 1 while performing distance detection. The temperature detection unit measures the temperature of the environment in which the electrolytic cell body 1 is located. On the one hand, it can be used as a basis to calculate the speed of the sound wave in the environment, and on the other hand, it can be used to monitor the temperature of the electrolytic cell body 1 for the subsequent comparison processing of the corresponding temperature and the changing relationship between the elongation of the electrolytic cell.

[0034] Specifically, temperature has a certain impact on the accuracy of ultrasonic ranging. Generally, for every 1°C change in temperature, the speed of sound changes by 0.607m / s. The change in the temperature effect on the ultrasonic wave is compensated for in the ultrasonic wave velocity as a correction to reduce the impact of temperature conditions on the ranging results and improve the accuracy of this ultrasonic detection system. This ultrasonic ranging system includes a temperature compensation part. By obtaining the medium temperature, the ultrasonic propagation speed is corrected, thereby improving the ranging accuracy. The propagation speed of the ultrasonic wave in actual working conditions is calculated by the following formula:

[0035]

[0036] Where: t is the temperature of the air medium, unit is ℃; T0 is a constant, and T0=273.16, and the unit of v is m / s.

[0037] In this embodiment, the temperature detection unit collects temperature data in actual working conditions and corrects the sound velocity, thereby improving the accuracy of distance measurement. In this embodiment, the ultrasonic distance measurement monitoring system 9 has a measurement range of 20mm to 10m; the distance measurement accuracy error is ±0.025mm.

[0038] Furthermore, it also includes a contrast processing system, such as Figure 1 As shown, the comparison processing system is pre-set with a database of theoretical spacings L between monitoring points at different temperatures of the electrolytic cell body. In actual operation, since the operating temperature of the electrolytic cell body 1 varies within a certain range, the elongation of the electrolytic cell body 1 also varies with the temperature change. For example, the long bolts 4 connecting the two end pressure plates have their fastening bolts 17 tightened to an appropriate torque when the equipment leaves the factory, so that the distance between the two end pressure plates is the calibrated length in the original factory state. However, during operation, the electrolytic cell body 1 is affected by changes in operating conditions and the environment, and thermal expansion and contraction cause the spacing between the two end pressure plates to change with temperature. Based on long-term practical operation experience, the temperature changes during the operation of the electrolytic cell body 1 are compiled into a temperature gradient as a reference. At a certain temperature value in the temperature gradient, the spacing between the end pressure plates should be within a certain range. The comparison processing system receives the electrolytic cell body 1 temperature T and the calculated spacing l, and compares them with the range of theoretical spacing L for the corresponding temperature in the database. When the spacing l exceeds the range of theoretical spacing L, the alarm system is triggered. During actual processing, the aforementioned temperature detection unit also detects and evaluates the temperature of the electrolytic cell body 1, and transmits the verified temperature data to the comparison processing system to select the corresponding temperature value from the temperature gradient, and then the distance range value of the end pressure plate under the temperature gradient can be found; and the actual spacing l measured by the ultrasonic ranging system is also transmitted to the comparison processing system by the data processing module, and the theoretical spacing L is compared with the actual spacing l. If the actual spacing is within the range of the theoretical spacing, the spacing change of the end pressure plate is normal; if it exceeds the range of the theoretical spacing, there may be a risk of leakage. At this time, an alarm signal can be issued to the operator through the connected alarm system.

[0039] As a preferred embodiment, the comparison processing system is connected to the PLC control system of the electrolytic hydrogen production device. The distance value of the two preset monitoring points 6 measured by the aforementioned ultrasonic ranging monitoring system 9 can be transmitted to the display panel of the PLC control system for observation by the system operator, and the measured distance value and comparison result can also be used as the conditions for the PLC to trigger the interlock, so that the PLC control system of the electrolytic hydrogen production device triggers the corresponding interlock according to the comparison processing result. The specific interlock operations include but are not limited to reducing the power of the electrolytic cell, increasing or decreasing the supply flow of the electrolyte, emergency stop and other operations.

[0040] In practice, the distance measurement between the two preset monitoring points 6 of the monitoring area by the distance measurement monitoring system 9 can be automatically measured at regular intervals, or the distance measurement monitoring system 9 can be triggered by a detection command issued by the PLC control system of the electrolytic hydrogen production device.

[0041] Example 2:

[0042] The principle is the same as that of the above-mentioned embodiment 1. In this embodiment, the detection signal transmitting module and the detection signal receiving module in the ranging monitoring system are respectively located at two preset monitoring points, so that the detection signal transmitting module and the detection signal receiving module are arranged relative to each other. Figure 4 As shown, the detection signal transmitting module and the detection signal receiving module are respectively arranged at two preset monitoring points of the monitoring part. Then, the distance between the two preset monitoring points is l=v×t.

[0043] Example 3:

[0044] It is understandable that in actual use, laser ranging sensors can also be used instead of ultrasonic waves, using optical signals as detection signals for non-contact measurement. Specifically, d is the distance to be measured between two preset monitoring points, c is the speed of light, which propagates in the atmosphere at approximately 3×108 m / s, and t is the flight time of the laser pulse from emission to reception, that is, the time interval between the start signal and the stop signal. In a pulsed laser ranging system, the time interval t is recorded by the clock counter inside the time measurement module, which records the number of cycles of the clock oscillator between the start signal and the stop signal. The frequency of the oscillator determines the time resolution of the counter. Assuming the clock oscillator frequency is f, and the clock counter records N oscillation cycles, the distance d can be calculated according to the following formula:

[0045]

[0046] Example 4:

[0047] It is understood that in actual use, radar ranging sensors can also be used instead of ultrasonic waves, using electromagnetic wave signals as the detection signal for non-contact measurement; the propagation speed of electromagnetic waves is approximately the speed of light, that is, about 300,000 kilometers per second. The radar ranging sensor system can calculate the distance to the target by measuring the time difference between the transmitted signal and the received echo signal. Based on the time difference and the speed of the electromagnetic wave, the formula can be used:

[0048] D = (c × t) / 2

[0049] Calculate the distance to the target. Where D is the distance, c is the propagation speed of the electromagnetic wave (approximately 3 × 10^8 m / s), and t is the time difference between transmission and reception. Divide by 2 because the electromagnetic wave makes one round trip.

[0050] Embodiment 5:

[0051] As an application embodiment of the distance measurement monitoring system, the preset monitoring point 6 is provided with a positioning frame structure 11 for setting up the detection signal transmitting module 7 or the detection signal receiving module 8. The positioning frame structure includes a base body connected to the preset monitoring point. Specifically, in this embodiment, it is used to monitor the distance between the end pressure plates on both sides of the electrolytic cell body, such as Figure 4 As shown, a positioning frame structure 11 is set on the left end pressure plate 2 and the right end pressure plate 3. The monitoring part is the distance between the two end pressure plates. The two end pressure plates are preset monitoring points 6, and a distance measurement monitoring system 9 is used to monitor the distance change between the two end pressure plates.

[0052] The positioning frame structure 11 includes a slot 12 with a groove fixed on the end pressure plate and matched with the shape of the end pressure plate. The groove matches the shape of the edge of the end pressure plate. When used specifically, if the electrolytic cell body is a circular flange-shaped pressure plate, the slot 12 is also an arc-shaped structure, such as Figure 5 When the first and second side plates 13 are in engagement with each other, the first and second side plates 13 are engaged with each other, and the second and second side plates 13 are engaged with each other, so that the first and second side plates 13 are engaged with each other, and the second and second side plates 13 are engaged with each other, so that the first and second side plates 13 are engaged with each other, and the second and second side plates 13 are engaged with each other, so that the first and second side plates 13 are engaged with each other, and the second and second side plates 13 are engaged with each other, so that the

[0053] As a preferred embodiment, Figure 4 As shown, the side panels on both sides of the bottom plate 15 extend to form extended side edges, so that the bottom plate 15 plus the extended side edges on both sides form a widened slot 12, and triangular reinforcing ribs 18 are arranged between the extended side edges and the two side panels to avoid deformation during clamping; at the same time, the extended side edges are also beneficial to the position adjustment of the detection signal transmitting module 7 installed on the upper side.

[0054] Specifically, a guide rail 19 is provided on the upper side of the widened slot 12 and is arranged along the axial direction of the electrolytic cell body. A slider 20 is slidably provided on the guide rail 19. The transmitting and receiving modules of the ranging detection system are installed on the slider 20. Specifically, a vertical plate 21 is vertically arranged on the slider 20. A through hole is provided on the vertical plate 21. The sensor 29 of the ranging monitoring system 9 is installed through the through hole. Nuts 22 threadedly connected to the sensor 29 are provided on both sides of the through hole for fixation; an adjusting screw 23 is also provided, and the adjusting screw 23 is arranged parallel to the guide rail 19 and is rotatably connected to the slot 12. The adjusting screw 23 passes through the slider 20 and is threadedly connected. Therefore, by rotating the adjusting screw 23, the position of the sensor 29 can be accurately adjusted so that the transmitting window of the sensor 29 is flush with the end face of the end pressure plate, thereby minimizing the measurement error.

[0055] Example 6:

[0056] An application of a distance measurement monitoring system 9 for a water electrolysis hydrogen production device, wherein a positioning frame structure 11 is provided on any end pressure plate, such as Figure 6 As shown, another positioning frame structure 11 is provided on the pole frame 32 of a certain electrolysis chamber, and a distance measurement monitoring system 9 is used to monitor the distance change between the end pressure plate and the predetermined electrolysis chamber.

[0057] In this embodiment, if Figure 6 As shown in the figure, the left end pressure plate is a preset monitoring point 6, and a pole frame 32 on the right is another preset monitoring point 6, so a positioning frame structure 11 is set at these two points respectively. The positioning frame structure 11 on the left point is the same as that of the fifth embodiment, and the positioning frame structure 11 on the right side includes an arc-shaped base plate 24, a first hinge arm 25, and a second hinge arm 26. Figure 7 As shown, the curved substrate 24 is arranged in contact with the surface of the pole frame 32, and its bottom surface has the same curvature as the surface of the pole frame 32. A threaded hole 28 is provided on the surface of the pole frame 32, and a positioning screw 27 is provided through the curved substrate 24. The positioning screw 27 is screwed into the threaded hole 28 to fix the positioning frame structure 11 to the pole frame 32. It can be understood that the threaded hole 28 for installation can be preset on the pole frame 32 of each small chamber to facilitate the installation of the sensor 29.

[0058] An articulated seat is provided on the surface of the curved base plate 24, the lower end of the first articulated arm 25 is hinged on the articulated seat, and the upper end is hinged to the second articulated arm 26, and a vertical plate 21 is provided at the other end of the second articulated arm 26, and a sensor 29 is provided on the vertical plate 21; in this way, through the setting of the two articulated arms, the position of the sensor 29 in the up and down and left and right directions can be conveniently adjusted so that it can be set opposite to the sensor 29 on the other side.

[0059] Embodiment seven:

[0060] A distance measurement monitoring system 9 for a water electrolysis hydrogen production device is disclosed. Positioning bracket structures 11 are provided on insulating pads 30 on either side of a disc spring assembly 5 at the end of a long bolt 4. The distance measurement monitoring system 9 is used to monitor dimensional changes in the disc spring assembly 5. In this embodiment, the distance measurement monitoring system 9 is provided on the disc spring assembly 5 to facilitate monitoring of the disc spring's compression or rebound, thereby determining the allowable expansion and contraction deformation of the electrolytic cell body.

[0061] In addition to the stacked disc springs in the disc spring assembly 5, an annular insulating pad 30 is provided at both ends of the disc spring. By providing sensors 29 on the two insulating pads 30, it is convenient to monitor the change in the disc spring assembly 5. Specifically, Figure 8 、 9 As shown, in this embodiment, the positioning frame is a ring 31, the inner diameter of the ring 31 is larger than the insulating pad 30, a vertical plate 21 is provided on the outer wall of the ring 31, and a sensor 29 is provided on the vertical plate 21; and a plurality of positioning screws 27 are threaded through the ring 31, and the positioning screws 27 are distributed circumferentially. During installation, the ring 31 is put on the corresponding insulating pad 30, and then the positioning screws 27 around are gradually tightened so that the positioning screws 27 are pressed against the insulating pad 30, thereby fixing the positioning frame structure 11, and measuring the distance between the two sides using the distance measurement detection system.

[0062] 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 distance measurement and monitoring system for a water electrolysis hydrogen production device, 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, and the left-end pressure plate, the middle plate, and the right-end pressure plate are tightened and overlapped with the plurality of electrolysis chambers to form an electrolytic cell body by a plurality of long bolts, wherein one end of the long bolt is provided with a disc spring assembly, characterized in that: Preset monitoring points are provided in pairs on the monitoring part of the electrolytic cell body, and also include detection signal transmitting modules or detection signal receiving modules arranged at the preset monitoring points, the detection signal transmitting modules are used to emit detection signals for non-contact measurement, and the detection signal receiving modules are used to receive the detection signals; the preset monitoring points are provided with positioning frame structures for setting up the detection signal transmitting modules or the detection signal receiving modules; The positioning frame structure includes a base body connected to a preset monitoring point, a vertical plate is provided on the base body, and a through hole is provided on the vertical plate. The sensor of the ranging monitoring system is installed through the through hole. Nuts are provided on both sides of the through hole and are screwed to the sensor to form a clamping fixation. The relative position of the sensor with respect to the preset monitoring point is fine-tuned by adjusting the nuts on both sides.

2. A distance measurement monitoring system for a water electrolysis hydrogen production device according to claim 1, characterized in that: The positioning frame structure includes a card slot with a groove that is fixed on the end pressure plate and matches the shape of the end pressure plate. The groove matches the shape of the edge of the end pressure plate. A first side plate is provided on one side of the card slot, and a second side plate is provided on the other opposite side. A bottom plate that fits the edge of the end pressure plate is provided between the two side plates. The bottom plate and the two side plates form a groove-shaped card slot. Specifically, the first side plate is provided with a U-shaped bayonet that matches the position of the flange hole on the end pressure plate.

3. A distance measurement monitoring system for a water electrolysis hydrogen production device according to claim 2, characterized in that: When the slot is clamped on the end pressure plate, the U-shaped bayonet is clamped on at least two long bolts, and the number of U-shaped bayonet settings is not less than two; the second side plate is screwed with a fastening bolt, and the distance between the first side plate and the second side plate is greater than the thickness of the end pressure plate.

4. A distance measurement monitoring system for a water electrolysis hydrogen production device according to claim 3, characterized in that: Side panels extend from both sides of the bottom plate to form extended side edges, so that the bottom plate and the extended side edges form a widened slot, and triangular reinforcing ribs are arranged between the extended side edges and the two side panels.

5. A distance measurement monitoring system for a water electrolysis hydrogen production device according to claim 3, characterized in that: A guide rail is provided on the upper side of the card slot along the axial direction of the electrolytic cell body, and a slider is slidably provided on the guide rail. The transmitting and receiving modules of the ranging detection system are installed on the slider. A vertical plate is vertically provided on the slider. An adjusting screw is also provided. The adjusting screw is arranged parallel to the guide rail and is rotatably connected to the card slot. The adjusting screw passes through the slider and is threadedly connected. The position of the sensor is accurately adjusted by rotating the adjusting screw.

6. A distance measurement and monitoring system for a water electrolysis hydrogen production device according to claim 1, characterized in that: The positioning frame structure includes an arc-shaped base plate, a first articulated arm, and a second articulated arm. The arc-shaped base plate is arranged on the surface of the pole frame, and its bottom surface has the same curvature as the pole frame surface. A threaded hole is provided on the pole frame surface, and a positioning screw is provided through the arc-shaped base plate. The positioning screw is screwed into the threaded hole to fix the positioning frame structure to the pole frame.

7. A distance measurement and monitoring system for a water electrolysis hydrogen production device according to claim 6, characterized in that: A hinge seat is provided on the surface of the arc-shaped base plate. The lower end of the first hinge arm is hinged on the hinge seat, and the upper end is hinged to the second hinge arm. A vertical plate is provided at the other end of the second hinge arm, and a sensor is provided on the vertical plate.

8. The distance measurement and monitoring system for a water electrolysis hydrogen production device according to claim 1, characterized in that: The positioning frame includes a ring, the inner diameter of which is larger than the insulating pad, a vertical plate is provided on the outer wall of the ring, and a sensor is provided on the vertical plate; and a plurality of positioning screws are threaded through the ring, and the positioning screws are distributed circumferentially so that the positioning screws are tightened against the insulating pad to fix the positioning frame structure.

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