Automatic calibration hydrogen-oxygen analyzer device applied to hydrogen production by electrolysis of water

Abstract

The utility model discloses an automatic calibration hydrogen-oxygen analyzer device applied to hydrogen production by water electrolysis. The automatic calibration hydrogen-oxygen analyzer device comprises a gas sampling module, a control module, a sensor module and a gas processing module, the gas sampling module is communicated with a sample inlet, a nitrogen port and a standard gas port; the gas sampling module is sequentially connected with the gas processing module and the sensor module, the control module is respectively connected with the gas sampling module and the sensor module and is used for controlling gas introduction and detection and calibration of the sensor module, and the sensor module is connected with the sample outlet. According to the utility model, manual participation in the calibration process is not needed, the labor cost is saved, and errors caused by improper manual operation are reduced; through the automatic calibration system, the hydrogen-oxygen analyzer is calibrated regularly, and detection errors caused by factors such as sensor aging and environment change are reduced.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen and oxygen analysis instrument technology, and in particular to an automatic calibration device for hydrogen and oxygen analyzers used in water electrolysis for hydrogen production. Background Technology

[0002] With the rapid development of renewable energy, water electrolysis for hydrogen production, as an efficient and clean method, has shown great potential in energy storage and industrial applications. However, the purity detection of hydrogen and oxygen during water electrolysis is crucial for ensuring product quality and system safety. While existing hydrogen and oxygen analyzers can detect hydrogen and oxygen concentrations, they often suffer from problems such as complex calibration, low accuracy, and short sensor lifespan. Summary of the Invention

[0003] Purpose of the utility model: In order to overcome the shortcomings of the prior art, this utility model requests protection for an automatic calibration hydrogen and oxygen analyzer device for hydrogen production by water electrolysis.

[0004] Technical Solution: The automatic calibration hydrogen and oxygen analyzer device for hydrogen production by water electrolysis disclosed in this utility model includes a gas sampling module, a control module, a sensor module, and a gas processing module; the gas sampling module is connected to the sample inlet, nitrogen inlet, and standard gas inlet; the gas sampling module is sequentially connected to the gas processing module and the sensor module; the control module is connected to the gas sampling module and the sensor module respectively, controlling the gas inlet and the sensor module detection and calibration; the sensor module is connected to the sample outlet.

[0005] Furthermore, the gas sampling module includes a first three-way solenoid valve, a second three-way solenoid valve, and a solenoid valve connected in sequence from the inlet. The first three-way solenoid valve is also connected to a nitrogen port, and the second three-way solenoid valve is also connected to a standard gas port. The control module connects to and controls the first three-way solenoid valve, the second three-way solenoid valve, and the solenoid valve.

[0006] When the first three-way solenoid valve is closed, sample gas is supplied; when it is open, nitrogen gas is supplied.

[0007] When the second three-way solenoid valve is closed, it will follow the first three-way solenoid valve to conduct; when it is open, nitrogen gas will be conducted.

[0008] Furthermore, the sensor module is a hydrogen and oxygen purity analyzer, and the control module transmits the hydrogen and oxygen purity analyzer signal via Modbus communication to control the analyzer's detection and calibration modes.

[0009] Furthermore, the gas processing module includes a self-regulating valve.

[0010] Furthermore, the gas processing module includes a dryer.

[0011] Furthermore, the gas processing module includes a filter.

[0012] Furthermore, the gas processing module also includes a branch pipeline connected in parallel with the sensor module on the main pipeline, and a first flow meter and a second flow meter are respectively installed on the main pipeline and the branch pipeline to realize the adjustment of the intake flow rate.

[0013] Furthermore, a check valve is provided in front of the sample outlet.

[0014] Beneficial effects: Compared with the prior art, the advantages of this utility model are:

[0015] 1. Improve testing efficiency: No manual intervention is required in the calibration process, saving labor costs and reducing errors caused by improper human operation;

[0016] 2. Improve detection accuracy: The hydrogen and oxygen analyzer is calibrated regularly through an automatic calibration system to reduce detection errors caused by factors such as sensor aging and environmental changes;

[0017] 3. Improved ease of operation and portability: Simple operation and easy maintenance reduce the technical requirements for operators;

[0018] 4. Enhanced system stability: Through real-time monitoring and feedback adjustment, the hydrogen and oxygen analyzer can maintain high-precision operation under complex working conditions. Automatic purging and pressure holding ensure sensor performance during start-up and shutdown, and extend the lifespan. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structural connection of this utility model. Detailed Implementation

[0020] like Figure 1 The illustrated automatic calibration hydrogen and oxygen analyzer device for hydrogen production via water electrolysis includes a gas sampling module 1, a control module 2, a sensor module 3, and a gas processing module 4. The gas sampling module 1 is connected to the sample inlet 101, the nitrogen inlet 102, and the standard gas inlet 103. The gas sampling module 1 is sequentially connected to the gas processing module 4 and the sensor module 3. The control module 2 is connected to both the gas sampling module 1 and the sensor module 3, controlling the gas flow and the detection and calibration by the sensor module 3. The sensor module 3 is connected to the sample outlet 104.

[0021] The gas sampling module 1 includes a first three-way solenoid valve 105, a second three-way solenoid valve 106, and a solenoid valve 107 connected in sequence from the inlet 101. The first three-way solenoid valve 105 is also connected to the nitrogen port 102, and the second three-way solenoid valve 106 is also connected to the standard gas port 103. The control module 2 connects to and controls the first three-way solenoid valve 105, the second three-way solenoid valve 106, and the solenoid valve 107.

[0022] When the first three-way solenoid valve 105 is closed, sample gas is supplied; when it is open, nitrogen gas is supplied.

[0023] When the second three-way solenoid valve 106 is closed, it will be turned on in conjunction with the first three-way solenoid valve 105; when it is open, nitrogen gas will be turned on.

[0024] When solenoid valve 107 is open, it will conduct gas through the second and third-way solenoid valve 106; when closed, it will not conduct gas.

[0025] The sensor module 3 is a hydrogen and oxygen purity analyzer 301, which detects the purity of hydrogen and oxygen in the gas and calibrates the zero point and concentration position of the analyzer sensor.

[0026] The control module 2 transmits signals from the hydrogen and oxygen purity analyzer 301 via Modbus communication to control the analyzer's detection and calibration modes.

[0027] The gas processing module 4 includes a self-regulating valve 401, a dryer 402, and a filter 403; it also includes a branch pipeline connected in parallel with the sensor module 3 on the main pipeline, and a first flow meter 404 and a second flow meter 405 are respectively installed on the main pipeline and the branch pipeline to realize the regulation of the inlet flow rate. A check valve 406 is provided in front of the sample outlet 104.

[0028] The main function of the self-operated regulating valve 401 is to reduce the pressure of the gas entering the gas sampling module 1.

[0029] The main function of dryer 402 is to dry and absorb water from the gas entering the gas sampling module 1;

[0030] The main function of filter 403 is to filter impurities in the gas entering the gas sampling module 1;

[0031] The main function of the first flow meter 404 and the second flow meter 405 is to regulate the flow rate of the gas entering the gas sampling module 1.

[0032] The main function of check valve 406 is to prevent backflow of outlet gas from affecting the measurement accuracy of sensor module 3 and to protect the sensor.

[0033] When the control module 2 detects that the system is in a shutdown state, it will purge the device to remove the sample gas inside the device during operation. It will then issue a purging mode command, opening the first three-way solenoid valve 105 and the solenoid valve 107. Nitrogen gas will enter the sensor module 3, and the analyzer data will be detected. Once the set value is reached, the first three-way solenoid valve 105 and the solenoid valve 107 will be closed, and the device will enter a pressure-holding mode. The sensor module will then be protected by nitrogen gas.

[0034] Control module 2 detects that the current mode is pressure holding mode. The control module records the time. When the set period is reached, the device will be purged and then enter pressure holding mode again to repeat the above work.

[0035] Control module 2 detects the system's operating status, issues a purging mode command, opens the first three-way solenoid valve 105 and solenoid valve 107, allows nitrogen gas to enter sensor module 3, detects the analyzer data, and when the set value is reached, the control module detects that the purging mode has been completed, issues an operating mode signal, closes the first three-way solenoid valve 105, allows sample gas to enter sensor module, and performs real-time concentration monitoring.

[0036] When the control module 2 detects the system operation and the device is in operating mode, it records the time until the calibration set cycle is reached. It then issues a purge mode command, opening the first three-way solenoid valve 105 and solenoid valve 107, allowing nitrogen gas to enter the sensor module. The analyzer data is detected, and when the set value is reached, the control module detects that the device has completed the purge mode. The control module then sends a zero-point calibration signal to the sensor module. After the sensor enters the zero-point calibration state and returns a completion signal, the control module sends a concentration calibration command, closes the first three-way solenoid valve 105, and opens the second three-way solenoid valve 106, allowing calibration gas to enter the sensor module. Upon receiving the calibration completion notification, the control module closes the second three-way solenoid valve 106 and sends a purge mode command, entering purge mode. The first three-way solenoid valve 105 and the solenoid valves open, allowing nitrogen gas to enter the sensor module. The analyzer data is detected, and when the set value is reached, the control module detects that the device has completed the purge mode, issues an operating mode signal, closes the first three-way solenoid valve 105, and the sensor module enters the sample gas for real-time concentration monitoring.

Claims

1. An apparatus for automatic calibration of hydrogen-oxygen analyzer for hydrogen production by electrolysis of water, characterized by: The gas sampling module (1), the control module (2), the sensor module (3) and the gas processing module (4) are included; the gas sampling module (1) is communicated with the sample inlet (101), the nitrogen inlet (102) and the standard gas inlet (103); the gas sampling module (1) is connected with the gas processing module (4) and the sensor module (3) in sequence, the control module (2) is connected with the gas sampling module (1) and the sensor module (3) respectively, the gas is controlled to enter, the sensor module (3) detects and calibrates, and the sensor module (3) is connected with the sample outlet (104).

2. The device for automatic calibration of hydrogen-oxygen analyzer for hydrogen production by electrolysis of water as claimed in claim 1, wherein: The gas sampling module (1) includes the first three-way electromagnetic valve (105), the second three-way electromagnetic valve (106) and the electromagnetic valve (107) connected in sequence from the sample inlet (101), the first three-way electromagnetic valve (105) is also connected with the nitrogen inlet (102), the second three-way electromagnetic valve (106) is also connected with the standard gas inlet (103), and the control module (2) is connected with and controls the first three-way electromagnetic valve (105), the second three-way electromagnetic valve (106) and the electromagnetic valve (107); When the first three-way electromagnetic valve (105) is closed, the sample gas is conducted; when the first three-way electromagnetic valve (105) is opened, the nitrogen gas is conducted; When the second three-way electromagnetic valve (106) is closed, the first three-way electromagnetic valve (105) is conducted; when the second three-way electromagnetic valve (106) is opened, the nitrogen gas is conducted.

3. The device as claimed in claim 1, wherein the device is used for automatic calibration of hydrogen-oxygen analyzer for hydrogen production by electrolysis of water. The sensor module (3) is a hydrogen-oxygen purity analyzer (301), the control module (2) transmits the hydrogen-oxygen purity analyzer (301) signal through Modbus communication, controls the analyzer to detect, and calibrates the mode.

4. The device as claimed in claim 1, wherein the device is used for automatic calibration of hydrogen-oxygen analyzer for hydrogen production by electrolysis of water. The gas processing module (4) includes a self-operated regulating valve (401).

5. The device as claimed in claim 1, wherein the device is used for automatic calibration of hydrogen-oxygen analyzer for hydrogen production by electrolysis of water. The gas processing module (4) includes a dryer (402).

6. The device as claimed in claim 1, wherein the device is used for automatic calibration of hydrogen-oxygen analyzer for hydrogen production by electrolysis of water. The gas processing module (4) includes a filter (403).

7. The device as claimed in claim 1, wherein the device is used for automatic calibration of hydrogen-oxygen analyzer for hydrogen production by electrolysis of water. The gas processing module (4) further includes a branch pipeline connected with the sensor module (3) in parallel on the main pipeline, a first flowmeter (404) and a second flowmeter (405) are arranged on the main pipeline and the branch pipeline respectively, so that the intake flow is adjusted.

8. The device as claimed in claim 1, wherein the device is used for automatic calibration of hydrogen-oxygen analyzer for hydrogen production by electrolysis of water. A check valve (406) is arranged in front of the sample outlet (104).

Images