Online detection method for electrolysis parameters of cell of electrolytic cell of water electrolysis hydrogen production device

Abstract

The invention discloses an electrolytic cell chamber electrolysis parameter online detection method of a water electrolysis hydrogen production device, which comprises an electrolytic cell chamber voltage detection method. The electrolytic cell cell voltage detection method comprises the steps that a plurality of voltage acquisition pieces, a voltage shunt switching device and a voltage data acquisition device are adopted to construct an electrolytic cell cell voltage on-line detection device, and the voltage acquisition pieces in the electrolytic cell cell voltage on-line detection device are correspondingly arranged in internal cells of an electrolytic cell respectively. The voltage shunt switching device and the voltage data acquisition device are respectively arranged outside an electrolytic cell of the water electrolysis hydrogen production device, and voltage sampling is respectively carried out on the voltage of each small chamber of the electrolytic cell through the plurality of voltage acquisition pieces; and the sampled cell voltage is transmitted to the voltage data acquisition device through the voltage shunt switching device. According to the invention, real-time on-line detection of the cell voltage in the unit cell of the electrolytic cell is realized.

Description

Technical Field

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

[0002] The water electrolysis hydrogen production device is a combination of equipment that uses alkaline water as raw material to produce hydrogen by electrolyzing water. The core equipment of the water electrolysis hydrogen production device is the electrolytic cell, which is provided with a number of unit cells arranged adjacent to each other in sequence. Each unit cell is assembled from a plate, an electrode mesh (including an anode mesh as an anode and a cathode mesh as a cathode), a diaphragm, a sealing gasket and an end plate. After the unit cells of the electrolytic cell are assembled, an internal chamber of the electrolytic cell is formed inside the electrolytic cell, which is composed of an anode chamber and a cathode chamber located on both sides of the diaphragm.

[0003] When the electrolyzer is working, current is passed through the alkali solution (electrolyte). After the water is electrolyzed, hydrogen is produced at the cathode and oxygen is produced at the anode. In this process, the water in the alkali solution is continuously consumed by electrolysis, and the concentration of the alkali solution changes, which causes the electrolysis parameters such as the voltage in the small chamber inside the electrolyzer to change. When the water in the alkali solution is continuously consumed during the electrolysis of water, thereby affecting the concentration of the alkali solution, it will further lead to an increase in the cell pressure in the electrolyzer, a decrease in current efficiency, and an increase in power consumption. Therefore, it is necessary to collect the electrolysis parameters such as the voltage in the small chamber of the electrolyzer, so as to reasonably control the voltage in the electrolyzer so that it reaches a stable value to prevent unnecessary failures.

[0004] At present, the main method for detecting the voltage of the electrolytic cell chamber is the direct measurement method using a multimeter. However, the direct measurement method using a multimeter requires manual sampling and detection of the voltage of each chamber in turn, which is time-consuming, wastes manual time, and is inefficient. Therefore, it is essentially a non-real-time detection method; and because the electrolytic cell is in a high-temperature state during normal operation, manual detection will lead to greater safety hazards.

[0005] In addition, when the electrolysis parameters such as the cell voltage of the electrolyzer of the water electrolysis hydrogen production device fluctuate greatly, its electrolysis performance will be reduced. For example, when the cell voltage is low, the electrolysis efficiency is low, and when the voltage is higher than this range, the energy consumption will increase, resulting in unnecessary waste of some resources. If the electrolysis parameters such as the cell voltage of the electrolyzer can be quickly obtained by real-time online detection, it will be beneficial for on-site maintenance personnel to promptly handle and maintain abnormal working conditions of the electrolyzer.

[0006] Furthermore, it is considered that the electrolysis parameters such as the voltage size and distribution at various locations in the electrolytic cell may not be uniform during actual operation. However, the existing detection methods are still unable to make a relatively accurate comprehensive assessment of the size and distribution of the electrolysis parameters at different heights in the electrolytic cell. Accurately grasping the size and distribution of the electrolysis parameters at various locations in the electrolytic cell is not only conducive to the monitoring and rapid disposal of the electrolysis parameters inside the electrolytic cell that is officially put into use, but also more conducive to the continuous improvement of the structural design of the new electrolytic cell in the research and development trial stage, thereby helping to develop a high-performance electrolytic cell with a more reasonable and balanced size and distribution of the electrolysis parameters inside the electrolytic cell and better working stability. Summary of the invention

[0007] In order to solve the above problems, the present invention proposes an online detection method for electrolysis parameters of the electrolytic cell chamber of a water electrolysis hydrogen production device, aiming to achieve real-time online monitoring of electrolysis parameters such as the internal chamber voltage of each unit cell of the electrolytic cell. The specific technical solution is as follows: A method for online detection of electrolysis parameters of an electrolytic cell chamber of a water electrolysis hydrogen production device, characterized in that it includes an electrolytic cell chamber voltage detection method for detecting the voltage of a chamber inside each unit cell of the electrolytic cell, the electrolytic cell chamber voltage detection method includes using multiple voltage acquisition components, a voltage shunt switching device and a voltage data acquisition device to construct an electrolytic cell chamber voltage online detection device, the multiple voltage acquisition components in the electrolytic cell chamber voltage online detection device are respectively correspondingly arranged in each internal chamber 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 multiple voltage acquisition components are used to sample the voltage of each chamber of the electrolytic cell, and the sampled chamber voltages are respectively transmitted to the voltage data acquisition device 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.

[0008] In the present invention, 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.

[0009] 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.

[0010] As a further improvement of the present invention, 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.

[0011] Preferably, a switch circuit board is provided on the voltage branch switching device, and the lead-out connecting wires of the plurality of voltage collecting components are connected to the voltage branch switching device through the switch circuit board.

[0012] In the present invention, the control system of the water electrolysis hydrogen production device collects the cell voltage of each unit cell in turn through the switch circuit board and the voltage branch switching device connected to the voltage collection component.

[0013] 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 a signal output component according to the signal transmitted by the voltage data acquisition device to control the output voltage on the cathode and the anode, so that the voltage in the unit cell is maintained in a stable state.

[0014] 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 pole plates for supporting electrode mesh sheets and stacked and clamped in sequence through sealing gaskets, and the pole plates include a main pole plate and a pole frame connected to the outer edge of the main pole plate; 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 using an electrolyte performance parameter comprehensive detection device capable of comprehensively detecting electrolyte performance parameters at different heights inside the electrolytic cell, and the electrolyte performance parameter comprehensive detection device includes The invention comprises 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 pole frame of the electrolytic cell along the up-down direction and connected with the small chamber inside the electrolytic cell, a detection rod movably arranged on the comprehensive detection hole along the up-down direction 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 to prevent hydrogen from directly entering the air and causing a safety accident.

[0015] Wherein, the conductive probe is not in contact with the main electrode plate of the electrolytic cell and is provided with a certain distance therebetween.

[0016] Preferably, avoidance grooves for avoiding the detection rod and the conductive probe when the detection rod and the conductive probe move up and down are respectively opened on both sides of the main pole plate in the up and down directions, and a pair of comprehensive detection holes are arranged at the upper end of each pole frame, and a pair of detection rods are correspondingly arranged on the pair of comprehensive detection holes, and the pair of detection rods are respectively 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.

[0017] 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 for welding and plugging.

[0018] As a further improvement of the comprehensive detection device for electrolyte performance parameters in the present invention, 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. The conductivity detection circuit module is externally connected between a pair of conductive probes at the anode and the cathode inside the electrolytic cell chamber of the same unit cell, and the conductive probes are moved up and down by the telescopic rod of the servo electric push rod, thereby realizing real-time online detection of the conductivity of the solution at different heights in the electrolytic cell chamber.

[0019] 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).

[0020] 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 chamber.

[0021] 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.

[0022] 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, and the solution temperature detection circuit module is externally connected to the thermocouple conductive probe, and the telescopic rod of the servo electric push rod connected to the thermocouple conductive probe is moved up and down to achieve the conductive probe. The up and down movement, thereby achieving real-time online detection of the solution temperature at different heights in the electrolytic cell chamber.

[0023] 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 connecting wires of the conductive probe and the electrode lead-out connecting wires 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.

[0024] In order to improve the accuracy of measurement, the parameter calibration method can be used in advance to detect and calibrate the solution conductivity and solution temperature at different heights of the electrolyte in the newly used electrolytic cell chamber. Then, in the subsequent work of the electrolytic cell, the solution conductivity and solution temperature parameters of the electrolyte at various locations are detected online in real time and compared with the original calibration data to determine whether the working condition of the electrolytic cell is abnormal, such as whether there is any abnormal situation such as electrode coating shedding (including the determination of the specific location of shedding).

[0025] Preferably, in the electrolytic cell chamber electrolysis parameter comprehensive detection method adopted, a conductive probe that is horizontally movable can be arranged on a lateral side of the electrolytic cell, or a conductive probe that is obliquely movable can be arranged on an oblique side of the electrolytic cell to detect electrolysis parameters at different lateral positions or oblique positions in the electrolytic cell chamber. In this case, it is only necessary to open a comprehensive detection hole that is arranged horizontally or obliquely on the pole frame of the electrolytic cell.

[0026] The beneficial effects of the present invention are: First, in an online detection method for electrolysis parameters of an electrolytic cell chamber of a water electrolysis hydrogen production device of the present invention, a method for detecting the voltage of an electrolytic cell chamber is adopted, in which a plurality of voltage collection components are distributed on electrodes of the electrolytic cell chamber, and the voltage collection components are connected to a voltage data acquisition device, thereby realizing a fragmented collection and control of the voltage of the electrolytic cell chamber, which can accurately collect the voltage of each chamber in real time to monitor the working condition of the electrolytic cell, thereby realizing real-time online monitoring of electrolysis parameters such as the voltage of the chamber inside each unit cell of the electrolytic cell.

[0027] Secondly, the present invention provides an online detection method for electrolysis parameters of an electrolytic cell chamber of a water electrolysis hydrogen production device. In the comprehensive detection method for electrolysis parameters of an electrolytic cell chamber, a conductive probe that can move up and down is arranged in the internal chamber of each unit cell of the electrolytic cell. This enables detection of electrolysis parameters at different heights of the internal chamber of each unit cell of the electrolytic cell. This enables a more objective and accurate comprehensive evaluation of the working condition of the electrolyte inside the electrolytic cell, optimizes the water replenishment operation and the control of electrolysis parameters, and further improves the performance of the electrolytic cell.

[0028] Third, in the online detection method of electrolysis parameters of the electrolytic cell chamber of a water electrolysis hydrogen production device of the present invention, in the comprehensive detection method of electrolysis parameters of the electrolytic cell chamber, 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 beneficial to ensuring the performance of the electrolytic cell.

[0029] Fourth, the present invention provides an online detection method for electrolysis parameters of an 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.

[0030] Fifth, the method for online detection of electrolysis parameters of electrolytic cell chambers of a water electrolysis hydrogen production device of the present invention, through real-time online detection of electrolysis parameters at different heights inside the electrolytic cell chamber, is not only conducive to the optimization of the working performance of the electrolytic cell of the water electrolysis hydrogen production device put into formal production, but also conducive to a comprehensive grasp of the size and distribution of electrolysis parameters of chambers at different heights inside the newly designed electrolytic cell during the research and development and trial production stages, 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

[0031] Figure 1 It is a schematic diagram of the working principle of an online detection device for the voltage of an electrolyzer chamber used in an online detection method for electrolysis parameters of an electrolyzer chamber of a water electrolysis hydrogen production device of the present invention (it can realize real-time online detection of the voltage of the electrolyzer chamber); Figure 2 It is a schematic diagram of the working principle of the electrolyte performance parameter comprehensive detection device used in the online detection method of electrolysis parameters of the electrolytic cell chamber of another water electrolysis hydrogen production device of the present invention (it can realize the real-time online comprehensive detection of the solution conductivity and solution temperature at different heights inside the electrolytic cell chamber); Figure 3 Is adopted Figure 2 Schematic diagram of the bulk structure of the electrolyzer with schematic diagram of the working principle.

[0032] Figure 4 yes Figure 3 A partial enlarged view of .

[0033] 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

[0034] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0035] like Figures 1 to 4 The embodiment of the method for online detection of electrolysis parameters of an electrolytic cell chamber of a water electrolysis hydrogen production device of the present invention is shown, including an electrolytic cell chamber voltage detection method for detecting the voltage of a chamber inside each unit cell of the electrolytic cell, the electrolytic cell chamber voltage detection method including using a plurality of voltage acquisition components, a voltage shunt switching device and a voltage data acquisition device to construct an electrolytic cell chamber voltage online detection device, the plurality of voltage acquisition components in the electrolytic cell chamber voltage online detection device are respectively arranged in each internal chamber 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 voltages are respectively transmitted to the voltage data acquisition device 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.

[0036] 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.

[0037] 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.

[0038] As a further improvement of this embodiment, 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.

[0039] Preferably, a switch circuit board is provided on the voltage branch switching device, and the lead-out connecting wires of the plurality of voltage collecting components are connected to the voltage branch switching device through the switch circuit board.

[0040] In this embodiment, the control system of the water electrolysis hydrogen production device collects the cell voltage of each unit cell in turn through the switch circuit board and the voltage branch switching device connected to the voltage collection component.

[0041] 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 the anode, so that the voltage in the unit slot is maintained in a stable state.

[0042] 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 through the sealing gasket 4, and the electrode plate 5 includes 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 using an electrolyte performance parameter comprehensive detection device that can comprehensively detect 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 with 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 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 arranged between the detection rod 12 and the comprehensive detection hole 11 to prevent hydrogen from directly entering the air and causing safety accidents.

[0043] 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 .

[0044] 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 arranged on the upper end of each pole frame 7, and a pair of detection rods 12 are correspondingly arranged on the pair of comprehensive detection holes 11, and the pair of detection rods 12 are respectively 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.

[0045] 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 and convex part of the spherical cap, the gap sealing plate 18 is used for welding and sealing.

[0046] As a further improvement of the comprehensive detection device for electrolyte performance parameters in the present 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 achieving real-time online detection of the conductivity of the solution at different heights in the electrolytic cell chamber.

[0047] The above-mentioned 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).

[0048] 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 realizing the 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.

[0049] 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 .

[0050] 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, and the conductive probe 13 is moved up and down by externally connecting the solution temperature detection circuit module to 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, thereby realizing real-time online detection of the solution temperature at different heights in the electrolytic cell chamber.

[0051] 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.

[0052] In order to improve the accuracy of the measurement, the parameter calibration method can be used in advance to detect and calibrate the solution conductivity and solution temperature of the electrolyte at different heights in the newly used electrolytic cell chamber. Then, in the subsequent operation of the electrolytic cell 8, the solution conductivity and solution temperature parameters of the electrolyte at various locations are detected online in real time and compared with the original calibration data to determine whether the working condition of the electrolytic cell 8 is abnormal, such as whether there is any abnormal situation such as the electrode coating falling off (including the determination of the specific location of the falling off).

[0053] Preferably, in the electrolytic cell chamber electrolysis parameter comprehensive detection method adopted, a conductive probe that is horizontally movable can be set on a lateral side of the electrolytic cell 8, or a conductive probe 13 that is obliquely movable can be set 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, it is only necessary to open a comprehensive detection hole 11 that is horizontally or obliquely set on the pole frame 7 of the electrolytic cell 8.

[0054] 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 the scope of protection of the present invention.

Claims

1. An online detection method 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 detection method for detecting the voltage of the internal chamber of each unit cell of the electrolytic cell, wherein the electrolytic cell chamber voltage detection method comprises using a plurality of voltage acquisition components, a voltage shunt switching device and a voltage data acquisition device to construct an electrolytic cell chamber voltage online detection device, wherein 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 method for online detection of electrolysis parameters of an electrolytic cell chamber of a water electrolysis hydrogen production device according to claim 1, characterized in that: The voltage collecting components in the online detection device for the voltage of the electrolytic cell chamber are respectively arranged on the cathode and the anode in each chamber of the electrolytic cell.

3. The method for online detection of electrolysis parameters of an 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 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, the anode and the voltage collection component, and the connection hole is sealed after the connection wires are arranged.

4. The method for online detection of electrolysis parameters of an electrolytic cell chamber of a water electrolysis hydrogen production device according to claim 1, characterized in that: 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.

5. The method for online detection of electrolysis parameters of an 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 connecting wires of the plurality of voltage collecting components are connected to the voltage branch switching device through the switch circuit board.

6. The method for online detection of electrolysis parameters of an 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 the anode, so that the voltage in the unit cell is maintained in a stable state.

7. The method for online detection of 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 pole plates for supporting electrode meshes and stacked and clamped in sequence through sealing gaskets, and the pole plates include a main pole plate and a pole frame connected to the outer edge of the main pole plate; 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 using an electrolyte performance parameter comprehensive detection device that can comprehensively detect electrolyte performance parameters at different heights inside the electrolytic cell, and the electrolyte performance parameters The 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 pole frame of the electrolytic cell along the up-down direction and connected with the small chamber inside the electrolytic cell, a detection rod movably arranged on the comprehensive detection hole along the up-down direction 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 method for online detection of electrolysis parameters of an 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 arranged at the upper end of each pole frame. A pair of detection rods are correspondingly arranged on the pair of comprehensive detection holes. The pair of detection rods are respectively placed in the avoidance grooves on both sides of the main pole plate. 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 method for online detection of 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. The conductivity detection circuit module is externally connected between a pair of conductive probes at the anode and the cathode inside the electrolytic cell chamber of the same unit cell, and the conductive probes are moved up and down by the telescopic rod of the servo electric push rod, thereby realizing real-time online detection of the conductivity of the solution at different heights in the electrolytic cell chamber.

10. The method for online detection of 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 the conductive probe leads to two connecting wires, which 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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