Electrolysis parameter on-line detection device for cell of electrolytic cell of water electrolysis hydrogen production device

Abstract

The utility model discloses an electrolytic cell small chamber electrolysis parameter online detection device of a water electrolysis hydrogen production device, which comprises an electrolytic cell small chamber voltage online detection device consisting of a plurality of voltage acquisition pieces, a voltage shunt switching device and a voltage data acquisition device, the plurality of voltage acquisition pieces in the electrolytic cell small chamber voltage online detection device are respectively and correspondingly arranged in internal small chambers of an electrolytic cell, and the voltage shunt switching device and the voltage data acquisition device are respectively arranged outside the electrolytic cell of the water electrolysis hydrogen production device; voltage sampling is respectively carried out on the voltage of each cell of the electrolytic cell through the plurality of voltage acquisition pieces, and the sampled cell voltage is respectively transmitted to the voltage data acquisition device through the voltage shunt switching device, so that the cell voltage detection of the cell voltage in the unit cell of the electrolytic cell is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of water electrolysis hydrogen production devices, in particular to an online detection device for electrolysis parameters of an electrolytic cell chamber of a water electrolysis hydrogen production device. Background Art

[0002] A water electrolysis hydrogen production system is a device that uses alkaline water as a raw material to produce hydrogen through electrolysis. The core equipment of a water electrolysis hydrogen production system is the electrolyzer, which is equipped with a number of adjacent unit cells. Each unit cell is assembled from electrode plates, electrode meshes (including an anode mesh serving as the anode and a cathode mesh serving as the cathode), a diaphragm, a sealing gasket, and end plates. After the unit cells are assembled, they form the internal chamber of the electrolyzer, which is composed of an anode chamber and a cathode chamber located on either side of the diaphragm.

[0003] When an electrolyzer is operating, an electric current flows through an alkaline solution (electrolyte). After water electrolysis, hydrogen is produced at the cathode and oxygen at the anode. During this process, water in the alkaline solution is continuously consumed, causing the concentration of the solution to change, which in turn causes changes in electrolytic parameters such as the voltage within the electrolytic cell. The continuous consumption of water during the electrolysis process, which affects the concentration of the solution, can further increase the cell voltage, reduce current efficiency, and increase power consumption. Therefore, it is necessary to collect electrolytic parameters such as the voltage within the electrolytic cell chamber to properly control the voltage within the electrolytic cell and maintain a stable value to prevent unnecessary failures.

[0004] Currently, the primary method for detecting electrolytic cell chamber voltage is direct measurement using a multimeter. However, this method requires manual sampling of each chamber voltage in turn, which is time-consuming, wastes labor time, and is inefficient. Therefore, it is essentially a non-real-time detection method. Furthermore, since electrolytic cells operate at high temperatures during normal operation, manual testing poses significant safety risks.

[0005] Furthermore, significant fluctuations in electrolysis parameters, such as the cell voltage, of a water electrolysis hydrogen production system can reduce electrolysis performance. For example, low cell voltage results in low electrolysis efficiency, while voltage levels above this range increase energy consumption, resulting in unnecessary waste of resources. Real-time online monitoring of these parameters would facilitate on-site maintenance personnel in promptly addressing and maintaining abnormal cell conditions.

[0006] Furthermore, it is important to consider that the electrolytic parameters such as the voltage magnitude and distribution at various locations within the electrolytic cell may not be uniform during actual operation. Existing detection methods are unable to provide a relatively accurate comprehensive assessment of the magnitude and distribution of electrolytic parameters at different heights within the electrolytic cell. Accurately understanding the magnitude and distribution of electrolytic parameters at various locations within the electrolytic cell is not only beneficial for monitoring and rapidly addressing the internal electrolytic parameters of the electrolytic cell that has been formally put into use, but is also more conducive to the continuous improvement of the structural design of new electrolytic cells in the R&D and trial production stages, thereby contributing to the development of high-performance electrolytic cells with more reasonable and balanced magnitude and distribution of electrolytic parameters within the electrolytic cell and better operating stability. Utility Model Content

[0007] To solve the above problems, this utility model proposes an online detection device for electrolytic parameters of the electrolytic cell chamber of a water electrolysis hydrogen production device, which aims to achieve real-time online monitoring of electrolytic parameters such as the internal cell voltage of each unit cell of the electrolytic cell. The specific technical solution is as follows:

[0008] A device for online detection of electrolysis parameters of an electrolytic cell chamber of a water electrolysis hydrogen production device, comprising an electrolytic cell chamber voltage online detection device constructed using multiple voltage acquisition components, a voltage shunt switching device, and a voltage data acquisition device. The multiple voltage acquisition components in the electrolytic cell chamber voltage online detection device are respectively arranged in each internal chamber of the electrolytic cell, and the voltage shunt switching device and the voltage data acquisition device are respectively arranged outside the electrolytic cell of the water electrolysis hydrogen production device. The voltage of each chamber of the electrolytic cell is sampled by the multiple voltage acquisition components, and the sampled chamber voltage is transmitted to the voltage data acquisition device through the voltage shunt switching device, thereby realizing electrolytic cell chamber voltage detection of the internal chamber voltage of the unit cell of the electrolytic cell.

[0009] In the utility model, each of the voltage collecting components in the electrolytic cell chamber voltage online detection device is respectively and correspondingly arranged on the cathode and anode in each of the chambers of the electrolytic cell.

[0010] In the present invention, the electrolytic cell chamber voltage online detection device also includes a connection hole arranged on the cell body of the electrolytic cell of the water electrolysis hydrogen production device for leading out the connection wires of the cathode, anode and voltage collection component, and the connection hole is sealed after the connection wires are arranged.

[0011] As a further improvement of the present invention, a voltage transmitter for converting AC voltage into DC voltage and adjusting the DC voltage is provided at one end of the multiple cathodes and multiple anodes of the electrolytic cell of the water electrolysis hydrogen production device.

[0012] Preferably, a switch circuit board is provided on the voltage branch switching device, and the lead-out connection lines of the plurality of voltage collecting components are connected to the voltage branch switching device through the switch circuit board.

[0013] In the present invention, the control system of the water electrolysis hydrogen production device collects the cell voltage of each unit tank in sequence through the switch circuit board and the voltage branch switching device connected to the voltage collection component.

[0014] In the present invention, the voltage data acquisition device and the switch circuit board are respectively connected to the control system of the water electrolysis hydrogen production device; the control system is connected to the voltage transmitter through the signal output component according to the signal transmitted by the voltage data acquisition device to control the output voltage on the cathode and anode, so that the voltage in the unit cell is maintained in a stable state.

[0015] In the present invention, each unit cell of the electrolytic cell of the water electrolysis hydrogen production device is respectively provided with a number of electrode plates for supporting electrode meshes and stacked and clamped in sequence by sealing gaskets, wherein the electrode plates include a main electrode plate and an electrode frame connected to the outer edge of the main electrode plate; the electrolytic parameter online detection device of the electrolytic cell chamber of the water electrolysis hydrogen production device also includes an electrolyte performance parameter comprehensive detection device that can comprehensively detect the electrolyte performance parameters at different heights inside the electrolytic cell, and the electrolyte performance parameter comprehensive detection device includes a bracket fixedly arranged above the electrolytic cell of the water electrolysis hydrogen production device, a servo electric push rod fixedly arranged on the bracket, a comprehensive detection hole opened in the upper end of the electrode frame of the electrolytic cell in the up-down direction and connected to the small chamber inside the electrolytic cell, a detection rod movable in the up-down direction on the comprehensive detection hole and inserted into the small chamber inside the electrolytic cell, and a conductive probe arranged at the lower end of the detection rod; the upper end of the detection rod is connected to the telescopic rod of the servo electric push rod, and a sealing structure is provided between the detection rod and the comprehensive detection hole to prevent hydrogen from directly entering the air and causing a safety accident.

[0016] The conductive probe is not in contact with the main electrode plate of the electrolytic cell and is spaced a certain distance apart from the main electrode plate.

[0017] Preferably, avoidance grooves are respectively opened on both sides of the main pole plate in the up and down directions for avoiding the detection rod and the conductive probe when the detection rod and the conductive probe move up and down. A pair of comprehensive detection holes are provided at the upper end of each pole frame, and a pair of detection rods are correspondingly provided on the pair of comprehensive detection holes. The pair of detection rods are placed in the avoidance grooves on both sides of the main pole plate, and the telescopic rods of the servo electric push rod are correspondingly connected to the pair of detection rods through a transition connecting plate.

[0018] Preferably, after the avoidance groove is provided on the main pole plate, when a through-gap appears in the avoidance groove at the concave and convex part of the spherical cap, a gap sealing plate is used to weld and seal the gap.

[0019] As a further improvement of the comprehensive detection device for electrolyte performance parameters in the utility model, the comprehensive detection device for electrolyte performance parameters also includes a conductivity detection circuit module arranged outside the electrolytic cell for detecting the conductivity of the solution at different heights in the electrolytic cell chamber. By externally connecting the conductivity detection circuit module between a pair of conductive probes at the anode and the cathode inside the electrolytic cell chamber of the same unit cell, and by the up and down movement of the telescopic rod of the servo electric push rod, the up and down movement of the conductive probe is achieved, thereby achieving real-time online detection of the conductivity of the solution at different heights in the electrolytic cell chamber.

[0020] The conductivity detection circuit module detects the conductivity of the solution by detecting the resistance between a pair of conductive probes inserted into the solution (electrolyte).

[0021] Preferably, the conductivity detection circuit module can also be connected between the electrode and the conductive probe. For example, the conductivity detection circuit module is connected between the conductive probe and the anode near the anode, or between the conductive probe and the cathode near the cathode, and the telescopic rod of the servo electric push rod connected to the conductive probe moves up and down to achieve real-time online detection of the conductivity of the solution at different heights in the anode chamber or cathode chamber of the electrolytic cell.

[0022] In the present invention, the detection rod is an electrically insulating detection rod, and the conductive probe leads to two connecting wires, which are buried inside the electrically insulating detection rod and led out from the upper part of the electrically insulating detection rod.

[0023] Preferably, in order to detect the solution temperature at different heights in the electrolytic cell chamber, the electrolyte performance parameter comprehensive detection device also includes making the conductive probe into a thermocouple conductive probe; the electrolyte performance parameter comprehensive detection device also includes a solution temperature detection circuit module arranged outside the electrolytic cell for detecting the solution temperature at different heights in the electrolytic cell chamber. By externally connecting the solution temperature detection circuit module with the thermocouple conductive probe and by moving the telescopic rod of the servo electric push rod connected to the thermocouple conductive probe up and down, the conductive probe can be moved up and down, thereby realizing real-time online detection of the solution temperature at different heights in the electrolytic cell chamber.

[0024] Preferably, the comprehensive detection device for electrolyte performance parameters also includes a wiring circuit switching device respectively arranged outside the electrolytic cell of the water electrolysis hydrogen production device, and the lead-out connection line of the conductive probe and the electrode lead-out connection line are respectively connected to the conductivity detection circuit module and the solution temperature detection circuit module through the wiring circuit switching device, and the conductivity detection circuit module and the solution temperature detection circuit module are respectively connected to the control system of the water electrolysis hydrogen production device.

[0025] To improve measurement accuracy, a parameter calibration method can be used to pre-calibrate the conductivity and temperature of the electrolyte at different heights within the newly commissioned electrolytic cell chamber. Subsequently, during subsequent operation of the electrolytic cell, the conductivity and temperature parameters at various locations within the electrolyte can be measured online in real time and compared with the original calibration data to determine if the cell is operating abnormally, such as if the electrode coating has fallen off (including determining the specific location of the falloff).

[0026] Preferably, in the electrolytic cell chamber electrolysis parameter comprehensive detection method adopted, a conductive probe arranged to move horizontally can be set on a lateral side of the electrolytic cell, or a conductive probe arranged to move obliquely can be set on an oblique side of the electrolytic cell to detect the electrolysis parameters at different lateral positions or different oblique positions in the electrolytic cell chamber. In this case, it is only necessary to open a comprehensive detection hole arranged horizontally or obliquely on the pole frame of the electrolytic cell.

[0027] The beneficial effects of the utility model are:

[0028] First, the utility model is an online detection device for electrolysis parameters of the electrolytic cell chamber of a water electrolysis hydrogen production device. In the online detection device for the electrolytic cell chamber voltage, a conductive probe that can move up and down is set in the internal chamber of each unit cell of the electrolytic cell. The electrolysis parameter detection at different height positions of the internal chamber of each unit cell of the electrolytic cell is realized, thereby making a more objective and accurate comprehensive evaluation of the working condition of the electrolyte inside the electrolytic cell, realizing the optimization of water replenishment operation and electrolysis parameter control, and further improving the performance of the electrolytic cell.

[0029] Second, the utility model is an online detection device for electrolysis parameters of the electrolytic cell chamber of a water electrolysis hydrogen production device. In the comprehensive detection device for electrolyte performance parameters, conductive probes that can move up and down are set in the internal chambers of each unit cell of the electrolytic cell. Electrolysis parameter detection at different height positions of the internal chambers of each unit cell of the electrolytic cell is achieved, thereby making a more objective and accurate comprehensive evaluation of the working conditions of the electrolyte inside the electrolytic cell, realizing optimization of water replenishment operations and electrolysis parameter control, and further improving the performance of the electrolytic cell.

[0030] Third, the utility model is an online detection device for electrolysis parameters of the electrolytic cell chamber of a water electrolysis hydrogen production device. In the comprehensive detection device for electrolyte performance parameters, an avoidance groove for the up and down movement of the conductive probe is provided on the main electrode plate, thereby realizing the compact arrangement of the movable conductive probe in the narrow chamber, thereby ensuring the design size of the original internal space of the electrolytic cell, which is conducive to ensuring the performance of the electrolytic cell.

[0031] Fourth, the utility model provides an online detection device for electrolysis parameters of the electrolytic cell chamber of a water electrolysis hydrogen production device. The control system of the water electrolysis hydrogen production device can adjust the water replenishment amount in time through the water replenishment device of the electrolytic cell according to the detection of the electrolysis parameters of the electrolytic cell chamber, and adjust the electrolysis parameters such as the voltage of the corresponding unit cell in time through the voltage transmitter, so as to optimize the working performance of the electrolytic cell.

[0032] Fifth, the utility model is an online detection device for electrolysis parameters of the electrolytic cell chamber of a water electrolysis hydrogen production device. Through real-time online detection of electrolysis parameters at different heights inside the electrolytic cell chamber, it is not only beneficial to optimize the working performance of the electrolytic cell of the water electrolysis hydrogen production device put into formal production, but also beneficial to fully grasp the size and distribution of electrolysis parameters of the chambers at different heights inside the newly designed electrolytic cell during the research and development and trial production stage, so that targeted improvements can be made to the structural design of the electrolytic cell, and further a high-performance electrolytic cell with more uniform size and distribution of internal electrolysis parameters can be developed. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the working principle of an online detection device for electrolysis parameters of an electrolytic cell chamber (an online detection device for electrolytic cell chamber voltage) of a water electrolysis hydrogen production device of the present invention (which can realize real-time online detection of the electrolytic cell chamber voltage);

[0034] Figure 2 This is a schematic diagram of the working principle of another device for online detection of electrolytic parameters of an electrolytic cell chamber (comprehensive detection device for electrolyte performance parameters) of a water electrolysis hydrogen production device according to the present invention (which can realize real-time online comprehensive detection of solution conductivity and solution temperature at different heights inside the electrolytic cell chamber);

[0035] Figure 3 It is adopted Figure 2 Schematic diagram of the bulk structure of the electrolytic cell with a schematic diagram of the working principle.

[0036] Figure 4 yes Figure 3 A partial enlarged view of .

[0037] In the figure: 1. cathode, 2. anode, 3. diaphragm, 4. sealing gasket, 5. plate, 6. main plate, 7. pole frame, 8. electrolytic cell, 9. bracket, 10. servo electric push rod, 11. integrated detection hole, 12. detection rod, 13. conductive probe, 14. sealing structure, 15. avoidance groove, 16. transition connecting plate, 17. connecting wire. DETAILED DESCRIPTION

[0038] 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.

[0039] like Figures 1 to 4 The figure shows an embodiment of an online detection device for electrolysis parameters of an electrolytic cell chamber of a water electrolysis hydrogen production device of the present invention, including an electrolytic cell chamber voltage online detection device constructed by using multiple voltage acquisition components, a voltage shunt switching device and a voltage data acquisition device. The multiple voltage acquisition components in the electrolytic cell chamber voltage online detection device are respectively arranged in each internal chamber of the electrolytic cell, and the voltage shunt switching device and the voltage data acquisition device are respectively arranged outside the electrolytic cell of the water electrolysis hydrogen production device. The voltage of each chamber of the electrolytic cell is sampled respectively by the multiple voltage acquisition components, and the sampled chamber voltage is transmitted to the voltage data acquisition device respectively through the voltage shunt switching device, thereby realizing the electrolytic cell chamber voltage detection of the internal chamber voltage of the unit cell of the electrolytic cell.

[0040] In this embodiment, the voltage collecting components in the electrolytic cell chamber voltage online detection device are respectively arranged on the cathode and anode in each of the chambers of the electrolytic cell.

[0041] In this embodiment, the electrolytic cell chamber voltage online detection device also includes a connection hole arranged on the cell body of the electrolytic cell of the water electrolysis hydrogen production device for leading out the connection wires of the cathode, anode and voltage collection component, and the connection hole is sealed after the connection wires are arranged.

[0042] As a further improvement of this embodiment, a voltage transmitter is provided at one end of the multiple cathodes and multiple anodes of the electrolytic cell of the water electrolysis hydrogen production device for converting AC voltage into DC voltage and adjusting the DC voltage.

[0043] Preferably, a switch circuit board is provided on the voltage branch switching device, and the lead-out connection lines of the plurality of voltage collecting components are connected to the voltage branch switching device through the switch circuit board.

[0044] In this embodiment, the control system of the water electrolysis hydrogen production device collects the cell voltage of each unit cell in sequence through the switch circuit board and the voltage branch switching device connected to the voltage collection component.

[0045] In this embodiment, the voltage data acquisition device and the switch circuit board are respectively connected to the control system of the water electrolysis hydrogen production device; the control system is connected to the voltage transmitter through the signal output component according to the signal transmitted by the voltage data acquisition device to control the output voltage on the cathode and anode, so that the voltage in the unit cell is maintained in a stable state.

[0046] In this embodiment, each unit cell of the electrolytic cell 8 of the water electrolysis hydrogen production device is respectively provided with a number of electrode plates 5 for supporting the electrode mesh (cathode 1 or anode 2) and stacked and clamped in sequence by sealing gaskets 4, and the electrode plates 5 include a main electrode plate 6 and an electrode frame 7 connected to the outer edge of the main electrode plate 6; the online detection method of electrolysis parameters of the electrolytic cell chamber of the water electrolysis hydrogen production device also includes an online comprehensive detection method of electrolysis parameters of the electrolytic cell chamber, and the online comprehensive detection method of electrolysis parameters of the electrolytic cell chamber includes adopting an electrolyte performance parameter comprehensive detection device that can comprehensively detect the electrolyte performance parameters at different heights inside the electrolytic cell 8, and the electrolyte performance parameter comprehensive detection device includes a fixed arrangement A bracket 9 is positioned above the electrolytic cell 8 of the water electrolysis hydrogen production device, a servo electric push rod 10 is fixedly arranged on the bracket 9, a comprehensive detection hole 11 is opened in the upper end of the pole frame 7 of the electrolytic cell 8 along the up-down direction and is connected to the internal chamber of the electrolytic cell 8, a detection rod 12 is arranged on the comprehensive detection hole 11 and inserted into the internal chamber of the electrolytic cell 8 for movement along the up-down direction, and a conductive probe 13 is arranged at the lower end of the detection rod 12; the upper end of the detection rod 12 is connected to the telescopic rod of the servo electric push rod 10, and a sealing structure 14 is provided between the detection rod 12 and the comprehensive detection hole 11 to prevent hydrogen from directly entering the air and causing a safety accident.

[0047] The conductive probe 13 is not in contact with the main electrode plate 6 of the electrolytic cell 8 and is spaced a certain distance apart from the main electrode plate 6 .

[0048] Preferably, avoidance grooves 15 are respectively opened on both sides of the main pole plate 6 in the up and down directions for avoiding the detection rod 12 and the conductive probe 13 when the detection rod 12 and the conductive probe 13 move up and down, and a pair of comprehensive detection holes 11 are provided at the upper end of each pole frame 7, and a pair of detection rods 12 are correspondingly provided on the pair of comprehensive detection holes 11. The pair of detection rods 12 are placed in the avoidance grooves 15 on both sides of the main pole plate 6, and the telescopic rods of the servo electric push rod 10 are correspondingly connected to the pair of detection rods 12 through a transition connecting plate 16.

[0049] Preferably, after the avoidance groove 15 is provided on the main pole plate 6 , when a through-gap appears in the avoidance groove 15 at the concave-convex part of the spherical cap, the gap sealing plate 18 is used for welding and sealing.

[0050] As a further improvement of the comprehensive detection device for electrolyte performance parameters in this embodiment, the comprehensive detection device for electrolyte performance parameters also includes a conductivity detection circuit module arranged outside the electrolytic cell 8 for detecting the conductivity of the solution at different heights in the electrolytic cell chamber. By externally connecting the conductivity detection circuit module between a pair of conductive probes 13 at the anode 2 and the cathode 1 inside the electrolytic cell chamber of the same unit cell, and by the up and down movement of the telescopic rod of the servo electric push rod 10, the up and down movement of the conductive probe 13 is achieved, thereby realizing real-time online detection of the conductivity of the solution at different heights in the electrolytic cell chamber.

[0051] The conductivity detection circuit module detects the conductivity of the solution by detecting the resistance between a pair of conductive probes 13 inserted into the solution (electrolyte).

[0052] Preferably, the conductivity detection circuit module can also be connected between the electrode and the conductive probe 13. For example, the conductivity detection circuit module is connected between the conductive probe 13 and the anode 2 near the anode 2, or between the conductive probe 13 and the cathode 1 near the cathode 1, and the conductive probe 13 is moved up and down by moving the telescopic rod of the servo electric push rod connected to the conductive probe 13 up and down, thereby achieving real-time online detection of the conductivity of the solution at different heights in the anode chamber or cathode chamber of the electrolytic cell chamber.

[0053] In this embodiment, the detection rod 12 is an electrical insulation detection rod, and the conductive probe 13 has two connecting wires, which are buried inside the electrical insulation detection rod 12 and are led out from the upper part of the electrical insulation detection rod 12.

[0054] Preferably, in order to detect the solution temperature at different heights in the electrolytic cell chamber, the electrolyte performance parameter comprehensive detection device also includes making the conductive probe 13 into a thermocouple conductive probe; the electrolyte performance parameter comprehensive detection device also includes a solution temperature detection circuit module arranged outside the electrolytic cell 8 for detecting the solution temperature at different heights in the electrolytic cell chamber. By externally connecting the solution temperature detection circuit module with the thermocouple conductive probe, and by moving the telescopic rod of the servo electric push rod connected to the thermocouple conductive probe up and down, the conductive probe 13 is moved up and down, thereby realizing real-time online detection of the solution temperature at different heights in the electrolytic cell chamber.

[0055] Preferably, the comprehensive detection device for electrolyte performance parameters also includes a wiring circuit switching device respectively arranged outside the electrolytic cell of the water electrolysis hydrogen production device, and the lead-out connection line of the conductive probe 13 and the electrode lead-out connection line (cathode 1 lead-out connection line, anode 2 lead-out connection line) are respectively connected to the conductivity detection circuit module and the solution temperature detection circuit module through the wiring circuit switching device, and the conductivity detection circuit module and the solution temperature detection circuit module are respectively connected to the control system of the water electrolysis hydrogen production device.

[0056] To improve measurement accuracy, a parameter calibration method can be used to pre-calibrate the conductivity and temperature of the electrolyte at various heights within the newly commissioned electrolytic cell chamber. Subsequently, during subsequent operation of the electrolytic cell 8, the conductivity and temperature parameters at various locations within the electrolyte can be measured online in real time and compared with the previously calibrated data to determine whether the electrolytic cell 8 is operating abnormally, such as whether the electrode coating has fallen off (including determining the specific location of the falloff).

[0057] Preferably, in the electrolytic cell chamber electrolysis parameter comprehensive detection method adopted, a conductive probe 13 that is horizontally movable can be provided on a lateral side of the electrolytic cell 8, or a conductive probe 13 that is obliquely movable can be provided on an oblique side of the electrolytic cell 8 to detect the electrolysis parameters at different lateral positions or oblique positions in the electrolytic cell chamber. In this case, only the comprehensive detection hole 11 arranged horizontally or obliquely is required to be provided on the pole frame 7 of the electrolytic cell 8.

[0058] 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. An online detection device for electrolysis parameters of an electrolytic cell chamber of a water electrolysis hydrogen production device, characterized in that: The invention comprises an electrolytic cell chamber voltage online detection device constructed by using a plurality of voltage acquisition components, a voltage shunt switching device and a voltage data acquisition device. The plurality of voltage acquisition components in the electrolytic cell chamber voltage online detection device are respectively arranged in the internal chambers of the electrolytic cell, the voltage shunt switching device and the voltage data acquisition device are respectively arranged outside the electrolytic cell of the water electrolysis hydrogen production device. The voltage of each chamber of the electrolytic cell is sampled respectively by the plurality of voltage acquisition components, and the sampled chamber voltage is transmitted to the voltage data acquisition device respectively through the voltage shunt switching device, thereby realizing the electrolytic cell chamber voltage detection of the internal chamber voltage of the unit cell of the electrolytic cell.

2. The online detection device for electrolysis parameters of the electrolytic cell chamber of a water electrolysis hydrogen production device according to claim 1, characterized in that: The voltage collecting components in the electrolytic cell chamber voltage online detection device are respectively and correspondingly arranged on the cathode and anode in each of the chambers of the electrolytic cell.

3. The online detection device for electrolysis parameters of the electrolytic cell chamber of a water electrolysis hydrogen production device according to claim 1, characterized in that: The electrolytic cell chamber voltage online detection device also includes a connection hole provided on the cell body of the electrolytic cell of the water electrolysis hydrogen production device for leading out the connection wires of the cathode, anode and voltage collection component, and the connection hole is sealed after the connection wires are arranged.

4. The online detection device for electrolysis parameters of an electrolytic cell chamber of a water electrolysis hydrogen production device according to claim 1, characterized in that: One end of the multiple cathodes and multiple anodes of the electrolytic cell of the water electrolysis hydrogen production device is provided with a voltage transmitter for converting AC voltage into DC voltage and adjusting the DC voltage.

5. The online detection device for electrolysis parameters of the electrolytic cell chamber of a water electrolysis hydrogen production device according to claim 4, characterized in that: The voltage branch switching device is provided with a switch circuit board, and the lead-out connection lines of the plurality of voltage collecting components are connected to the voltage branch switching device through the switch circuit board.

6. The online detection device for electrolysis parameters of the electrolytic cell chamber of a water electrolysis hydrogen production device according to claim 5, characterized in that: The voltage data acquisition device and the switch circuit board are respectively connected to the control system of the water electrolysis hydrogen production device; the control system is connected to the voltage transmitter through the signal output component according to the signal transmitted by the voltage data acquisition device to control the output voltage on the cathode and anode, so that the voltage in the unit cell is maintained in a stable state.

7. The online detection device for electrolysis parameters of an electrolytic cell chamber of a water electrolysis hydrogen production device according to claim 1, characterized in that: Each unit cell of the electrolytic cell of the water electrolysis hydrogen production device is respectively provided with a number of electrode plates for supporting the electrode mesh and stacked and clamped in sequence by sealing gaskets, wherein the electrode plates include a main electrode plate and an electrode frame connected to the outer edge of the main electrode plate; the online detection device for electrolysis parameters of the electrolytic cell chamber of the water electrolysis hydrogen production device also includes an electrolyte performance parameter comprehensive detection device that can comprehensively detect the electrolyte performance parameters at different heights inside the electrolytic cell, and the electrolyte performance parameter comprehensive detection device includes a bracket fixedly arranged above the electrolytic cell of the water electrolysis hydrogen production device, a servo electric push rod fixedly arranged on the bracket, a comprehensive detection hole opened in the upper end of the electrode frame of the electrolytic cell in the up-down direction and connected to the small chamber inside the electrolytic cell, a detection rod movable in the up-down direction on the comprehensive detection hole and inserted into the small chamber inside the electrolytic cell, and a conductive probe arranged at the lower end of the detection rod; the upper end of the detection rod is connected to the telescopic rod of the servo electric push rod, and a sealing structure is arranged between the detection rod and the comprehensive detection hole.

8. The online detection device for electrolysis parameters of the electrolytic cell chamber of a water electrolysis hydrogen production device according to claim 7, characterized in that: Both sides of the main pole plate are respectively provided with avoidance grooves in the up and down directions for avoiding the detection rod and the conductive probe when the detection rod and the conductive probe move up and down. A pair of comprehensive detection holes are provided at the upper end of each pole frame, and a pair of detection rods are correspondingly provided on the pair of comprehensive detection holes. The pair of detection rods are placed in the avoidance grooves on both sides of the main pole plate, and the telescopic rod of the servo electric push rod is correspondingly connected to the pair of detection rods through a transition connecting plate.

9. The online detection device for electrolysis parameters of an electrolytic cell chamber of a water electrolysis hydrogen production device according to claim 7, characterized in that: The comprehensive detection device for electrolyte performance parameters also includes a conductivity detection circuit module arranged outside the electrolytic cell for detecting the conductivity of the solution at different heights in the electrolytic cell chamber. By externally connecting the conductivity detection circuit module between a pair of conductive probes at the anode and the cathode inside the electrolytic cell chamber of the same unit cell, and by the up and down movement of the telescopic rod of the servo electric push rod, the up and down movement of the conductive probes is achieved, thereby achieving real-time online detection of the conductivity of the solution at different heights in the electrolytic cell chamber.

10. The online detection device for electrolysis parameters of an electrolytic cell chamber of a water electrolysis hydrogen production device according to claim 7, characterized in that: The detection rod is an electrical insulation detection rod, and two connecting wires are led out from the conductive probe. The two connecting wires are buried inside the electrical insulation detection rod and led out from the upper part of the electrical insulation detection rod.

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