CN113866349A - Quick test calibration device and calibration method for hydrogen concentration sensor - Google Patents
Quick test calibration device and calibration method for hydrogen concentration sensor Download PDFInfo
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 150
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 150
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 122
- 238000012360 testing method Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000010926 purge Methods 0.000 claims abstract description 26
- 239000007789 gas Substances 0.000 claims description 58
- 150000002431 hydrogen Chemical class 0.000 claims description 31
- 206010010904 Convulsion Diseases 0.000 claims description 14
- 230000036461 convulsion Effects 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000004880 explosion Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000009530 blood pressure measurement Methods 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000009781 safety test method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- G—PHYSICS
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- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/005—H2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0006—Calibrating gas analysers
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Abstract
The invention provides a quick test calibration device and a quick test calibration method for a hydrogen concentration sensor. The rapid test calibration device and the calibration method for the hydrogen concentration sensor are safe, reliable and accurate in measuring the precision of the hydrogen concentration sensor, can realize the test of the hydrogen concentration sensor under any hydrogen concentration within the range of 0-4%, and have the functions of air purging, pressure measurement, temperature and humidity measurement, pressure maintaining test, explosion prevention and the like, so that the hydrogen concentration sensor can be rapidly calibrated.
Description
Technical Field
The invention belongs to the field of hydrogen safety testing, and particularly relates to a quick testing and calibrating device and a quick testing and calibrating method for a hydrogen concentration sensor.
Background
Hydrogen is a flammable and explosive gas, and is mixed with air to cause explosion. Hydrogen gas leaks are a significant source of danger for fire explosions. With the development of the hydrogen energy industry, the application of hydrogen in various fields is more and more extensive, and the problem of hydrogen safety also becomes more and more important.
The hydrogen detection technology is one of the basic key technologies for the development and utilization of hydrogen energy, and the research and development of the hydrogen detection technology become more and more important. For the hydrogen concentration in the real-time supervision operational environment, send out the police dispatch newspaper when hydrogen concentration surpasss the predetermined value and take measures to prevent dangerous the emergence, need use hydrogen concentration sensor to accurately monitor hydrogen concentration in real time, hydrogen concentration sensor arranges the position and receives factors such as multiple environment influence moreover, and the structure is complicated, and is high to operating personnel's requisition degree.
The performance of the hydrogen concentration sensor is important for guaranteeing the hydrogen safety, and the accuracy of the test value of the hydrogen concentration sensor needs to be ensured. Therefore, the patent develops a quick test calibration device and a quick test calibration method for the hydrogen concentration sensor, and the precision of the hydrogen concentration sensor is tested and calibrated.
Disclosure of Invention
In view of this, the present invention provides a quick test calibration apparatus for a hydrogen concentration sensor, so as to solve the problems of complex structure and complex operation in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a quick test calibration device of a hydrogen concentration sensor comprises a sealed explosion-proof box, a standard gas configuration unit, an air purging unit, an exhaust unit, a control system and a power supply unit, wherein one side of the sealed explosion-proof box is fixedly communicated with the standard gas configuration unit and the air purging unit respectively, the other side of the sealed explosion-proof box is fixedly communicated with the exhaust unit, the sealed explosion-proof box, the standard gas configuration unit, the air purging unit and the exhaust unit are all in signal connection with the control system, and the sealed explosion-proof box, the standard gas configuration unit, the air purging unit, the exhaust unit and the control system are all electrically connected to the power supply unit.
Further, sealed explosion-proof case includes the box, is surveyed support, pressure sensor and temperature and humidity sensor, the box is cuboid hollow structure, box inner wall bottom fixed connection pressure sensor and temperature and humidity sensor, box inner wall one side fixed connection is surveyed the support, is used for placing by survey hydrogen concentration sensor by survey the support, and pressure sensor, temperature and humidity sensor, by the equal signal connection of survey hydrogen concentration sensor to control system.
Furthermore, the standard gas configuration unit comprises a hydrogen divider, a flow controller and a first electromagnetic valve, one end of the flow controller is fixedly communicated to the hydrogen divider, the other end of the flow controller is fixedly communicated to one end of the first electromagnetic valve, the other end of the first electromagnetic valve is fixedly communicated to the inside of the box body and is positioned at the bottom of the measured bracket, and the hydrogen divider, the flow controller and the first electromagnetic valve are all in signal connection with the control system.
Furthermore, the air purging unit comprises a filter and a second electromagnetic valve, one end of the second electromagnetic valve is communicated to the filter, the other end of the second electromagnetic valve is fixedly communicated to the interior of the box body, and the second electromagnetic valve is in signal connection with the control system.
Further, the exhaust unit includes No. three solenoid valves, convulsions subassembly and drain, the fixed one end that communicates to No. three solenoid valves of one end of convulsions subassembly, the one end peripheral hardware drain of convulsions subassembly, the other end fixed intercommunication of No. three solenoid valves is inside the box, and No. three solenoid valves, the equal signal connection of convulsions subassembly are to control system.
Compared with the prior art, the rapid test calibration device for the hydrogen concentration sensor has the following advantages:
(1) the rapid test calibration device for the hydrogen concentration sensor, provided by the invention, has the advantages of simple structure and reasonable design, can be used for collecting the data of the measured hydrogen concentration sensor, drawing the concentration value of the standard gas and a test value curve, calibrating the hydrogen concentration sensor, and being simple and feasible to operate, economic, practical and easy to popularize.
The invention also aims to provide a rapid test and calibration method of the hydrogen concentration sensor, which is used for simulating any hydrogen concentration environment within 0-4% and safely and reliably testing the precision and calibration of the hydrogen concentration sensor.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a quick test calibration method for a hydrogen concentration sensor comprises the following steps:
s1, placing the measured hydrogen concentration sensor on the measured bracket;
s2, controlling the hydrogen divider to output hydrogen by the control system, controlling the standard gas flow of the flow controller, opening a first electromagnetic valve to enable the standard gas to enter the box body and blow to the measured hydrogen concentration sensor;
s3, the control system controls the pressure sensor, the temperature and humidity sensor and the measured hydrogen concentration sensor to be started, the pressure sensor, the temperature and humidity sensor and the measured hydrogen concentration sensor respectively transmit data to the control system, and the control system compares the hydrogen concentration output by the hydrogen divider to determine whether the accuracy of the measured hydrogen concentration sensor meets the requirement;
and S4, controlling a hydrogen divider in the standard gas configuration unit by the control system according to the parameters of the measured hydrogen concentration sensor, outputting hydrogen, sequentially reading the detection values of the measured hydrogen concentration sensor, drawing a standard gas concentration value and test value curve, and calibrating the hydrogen concentration sensor.
Compared with the prior art, the rapid test calibration method for the hydrogen concentration sensor has the following advantages:
(1) the rapid test and calibration method for the hydrogen concentration sensor, provided by the invention, can safely, reliably and accurately measure the precision of the hydrogen concentration sensor, can realize the test of the hydrogen concentration sensor under any hydrogen concentration within the range of 0-4%, and has the functions of air purging, pressure measurement, temperature and humidity measurement, pressure maintaining test, explosion prevention and the like, so that the hydrogen concentration sensor can be rapidly calibrated.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a process diagram of an overall structure of a rapid test calibration apparatus and a calibration method for a hydrogen concentration sensor according to an embodiment of the present invention;
fig. 2 is a control flow chart of a rapid test calibration apparatus and a calibration method for a hydrogen concentration sensor according to an embodiment of the present invention.
Description of reference numerals:
1. sealing the explosion-proof box; 11. a box body; 12. a measured support; 13. a pressure sensor; 14. a temperature and humidity sensor; 2. a standard gas configuration unit; 21. a hydrogen splitter; 22. a flow controller; 23. a first electromagnetic valve; 3. an air purge unit; 31. a filter; 32. a second electromagnetic valve; 4. an exhaust unit; 41. a third electromagnetic valve; 42. an air draft assembly; 43. a vent port; 5. a control system; 6. a measured hydrogen concentration sensor.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 2, the quick test calibration device for the hydrogen concentration sensor comprises a sealed explosion-proof box 1, a standard gas configuration unit 2, an air purging unit 3, an exhaust unit 4, a control system 5 and a power supply unit, wherein one side of the sealed explosion-proof box 1 is fixedly communicated with the standard gas configuration unit 2 and the air purging unit 3 respectively, the other side of the sealed explosion-proof box is fixedly communicated with the exhaust unit 4, the sealed explosion-proof box 1, the standard gas configuration unit 2, the air purging unit 3 and the exhaust unit 4 are all in signal connection with the control system 5, and the sealed explosion-proof box 1, the standard gas configuration unit 2, the air purging unit 3, the exhaust unit 4 and the control system 5 are all electrically connected to the power supply unit. This hydrogen concentration sensor's quick test calibration device, simple structure, reasonable in design can gather the data of being surveyed hydrogen concentration sensor to draw standard gas concentration value and test value curve, carry out hydrogen concentration sensor and mark, easy operation is reliable and easy, economical and practical, easily promotes.
During actual calibration, the control system 5 controls the hydrogen divider 21 in the standard gas configuration unit 2 to realize configuration of standard gas with a certain concentration, controls the flow controller 22 in the standard gas configuration unit 2 to enable the flow of the standard gas to reach a set requirement, and controls the first electromagnetic valve 23 in the standard gas configuration unit 2 to realize that the standard gas enters the sealed explosion-proof box 1. The control system 5 controls a second electromagnetic valve 32 in the air blowing unit 3 to realize the air entering the sealed explosion-proof box 1. The control system 5 controls a third electromagnetic valve 41 in the exhaust unit 4 to realize that gas flows out of the sealed explosion-proof box 1, and controls an air draft assembly 42 in the exhaust unit 4 to realize that gas in the sealed explosion-proof box 1 flows. The control system 5 collects pressure data of the pressure sensor 13 in the sealed explosion-proof box 1, temperature and humidity data of the temperature and humidity sensor 14 and hydrogen concentration data of the measured hydrogen concentration sensor 6. The power supply unit is connected with the sealed explosion-proof box 1, the standard gas configuration unit 2, the air purging unit 3, the exhaust unit 4 and the control system 5, and the power supply unit supplies power to the sealed explosion-proof box 1, the standard gas configuration unit 2, the air purging unit 3, the exhaust unit 4 and the control system 5.
Sealed explosion-proof case 1 includes box 11, surveyed support 12, pressure sensor 13 and temperature and humidity sensor 14, box 11 is cuboid hollow structure, box 11 is used for providing sealed explosion-proof test environment, box 11 inner wall bottom fixed connection pressure sensor 13 and temperature and humidity sensor 14, pressure sensor 13 is arranged in measuring box 11 gas pressure. The temperature and humidity sensor 14 is used for measuring the temperature and humidity of the gas in the box 11. The hydrogen concentration sensor measuring device is characterized in that a measured support 12 is fixedly connected to one side of the inner wall of the box body 11, the measured support 12 is used for placing a measured hydrogen concentration sensor 6, a pressure sensor 13, a temperature and humidity sensor 14 and the measured hydrogen concentration sensor 6 are in signal connection with the control system 5, the pressure sensor 13 and the temperature and humidity sensor 14 are in the prior art when the hydrogen concentration sensor measuring device is in actual use, and the measured support 12, the pressure sensor 13 and the temperature and humidity sensor 14 are all installed in the box body 11. The measured support 12 is used for placing a hydrogen concentration sensor for testing.
The calibration gas configuration unit 2 comprises a hydrogen divider 21, a flow controller 22 and a first electromagnetic valve 23, one end of the flow controller 22 is fixedly communicated with the hydrogen divider 21, the other end of the flow controller 22 is fixedly communicated with one end of the first electromagnetic valve 23, the other end of the first electromagnetic valve 23 is fixedly communicated with the inside of the box body 11 and is positioned at the bottom of the measured bracket 12, the hydrogen divider 21, the flow controller 22 and the first electromagnetic valve 23 are all in signal connection with the control system 5, the hydrogen divider 21, the flow controller 22 and the first electromagnetic valve 23 are all in the prior art, when in actual calibration, the calibration gas configuration unit 2 comprises the hydrogen divider 21, the flow controller 22 and the first electromagnetic valve 23 which are connected in sequence, and the outlet of the first electromagnetic valve 23 is connected with the box body 11 through a pipeline. The hydrogen separator 21 is used for preparing standard hydrogen with certain concentration. The flow controller 22 is used to control the flow of the standard hydrogen gas discharge. The first electromagnetic valve 23 controls the discharge of the standard hydrogen gas by on-off.
The air purging unit 3 comprises a filter 31 and a second electromagnetic valve 32, one end of the second electromagnetic valve 32 is communicated to the filter 31, the other end of the second electromagnetic valve 32 is fixedly communicated to the inside of the box body 11, the second electromagnetic valve 32 is in signal connection with the control system 5, the second electromagnetic valve 32 is in the prior art, and the air purging unit 3 comprises the filter 31 and the second electromagnetic valve 32 which are connected in sequence during actual calibration. The outlet of the second electromagnetic valve 32 is connected with the box body 11. The filter 31 serves to filter foreign substances in the air introduced into the cabinet 11. The second electromagnetic valve 32 controls the air in the box body 11 through on-off.
Exhaust unit 4 includes No. three solenoid valves 41, convulsions subassembly 42 and drain 43, the fixed one end that communicates to No. three solenoid valves 41 of one end of convulsions subassembly 42, the one end peripheral hardware drain 43 of convulsions subassembly 42, No. three solenoid valves 41's the other end fixed communicates to inside the box 11, and No. three solenoid valves 41, the equal signal connection of convulsions subassembly 5, No. three solenoid valves 41, convulsions subassembly 42 are prior art, and when actual standard, exhaust unit 4 is including No. three solenoid valves 41, convulsions subassembly 42 and the drain 43 that connects in order. The inlet of the third electromagnetic valve 41 is connected with the box body 11. The third electromagnetic valve 41 controls the discharge of gas in the box body 11 through on-off control. The air extraction assembly 42 effects the flow of air within the test chamber.
A quick test calibration method for a hydrogen concentration sensor comprises the following steps:
s1, placing the measured hydrogen concentration sensor 6 on the measured support 12; in the test, the hydrogen concentration sensor 6 to be measured is first placed on the support 12 to be measured. And the second solenoid valve 32 in the air purging unit 3 and the third solenoid valve 41 in the exhaust unit 4 are opened through the control system 5, and then the air draft assembly 42 in the exhaust unit 4 is opened to perform air purging on the box body 11.
S2, the control system 5 controls the hydrogen divider 21 in the standard gas configuration unit 2 to output standard hydrogen with a certain concentration, controls the flow controller 22 in the standard gas configuration unit 2 to achieve the standard gas flow required by the test, and opens the first electromagnetic valve 23 in the standard gas configuration unit 2 to enable the standard gas to enter the box body 11 and blow towards the measured hydrogen concentration sensor 6;
s3, the control system 5 controls the pressure sensor 13, the temperature and humidity sensor 14 and the measured hydrogen concentration sensor 6 to be started, the pressure sensor 13, the temperature and humidity sensor 14 and the measured hydrogen concentration sensor 6 respectively transmit data to the control system 5, and the control system 5 compares the hydrogen concentration output by the hydrogen divider 21 to determine whether the accuracy of the measured hydrogen concentration sensor 6 meets the requirement; during actual measurement, the control system 5 acquires pressure, temperature and humidity data in the box body 11 through the pressure sensor 13 and the temperature and humidity sensor 14, acquires data of the measured hydrogen concentration sensor 6, compares the data with the hydrogen concentration output by the hydrogen divider 21 in the standard gas configuration unit 2, and determines whether the accuracy of the measured hydrogen concentration sensor 6 meets the requirement;
s4, according to parameters such as the measuring range of the measured hydrogen concentration sensor 6, the control system 5 controls the hydrogen divider 21 in the standard gas configuration unit 2, outputs standard hydrogen with different concentrations from low to high within the range of 0% -4%, sequentially reads the detection value of the measured hydrogen concentration sensor 6, draws a standard gas concentration value and a test value curve, and calibrates the hydrogen concentration sensor.
Example 1
During the test, firstly, a measured hydrogen concentration sensor is placed on the measured hydrogen concentration sensor bracket. The control system 5 opens the electromagnetic valve 32 in the air purging unit 3 and the electromagnetic valve 41 in the exhaust unit 4, and then opens the air draft assembly 42 in the exhaust unit 4 to perform air purging on the box body 11, so as to replace the fresh air in the box body 11.
According to the test conditions, the temperature, the humidity and the pressure are at the ambient temperature, the humidity and the pressure, such as 25 ℃, 60% RH and 101 kPa. The control system 5 controls the hydrogen divider 21 in the standard gas configuration unit 2 to output standard hydrogen with a certain concentration, such as 1000ppm, the control system 5 controls the flow controller 22 in the standard gas configuration unit 2 to achieve the standard gas flow required by the test, such as 5mL/min, and the control system 5 opens the electromagnetic valve 23 in the standard gas configuration unit 2 to enable the standard gas to enter the box body 11 and directly blow to the tested hydrogen concentration sensor.
The control system 5 collects pressure, temperature and humidity data in the box body 11, collects hydrogen concentration sensor data, compares the hydrogen concentration data with the hydrogen concentration output by the hydrogen divider 21 in the standard gas configuration unit 2, and determines whether the accuracy of the measured hydrogen concentration sensor meets the requirement. If the hydrogen concentration output by the hydrogen divider 21 is 1000ppm and the measured hydrogen concentration sensor reads 995ppm, then there is a deviation of 5ppm and the reading of 995ppm is calibrated to 1000 ppm.
Similarly, according to the parameters such as the measurement range of the measured hydrogen concentration sensor, the control system 5 controls the hydrogen divider 21 in the standard gas configuration unit 2 to output standard hydrogen with different concentrations, such as 100ppm, 200ppm, 500ppm, 1000ppm, 2000ppm, 5000ppm, 10000ppm and the like, from low to high within the range of 0% to 4%, sequentially reads the detection value of the hydrogen concentration sensor, draws a standard gas concentration value and a test value curve, and calibrates the hydrogen concentration sensor.
The test temperature, humidity and pressure are ambient temperature, ambient humidity and ambient pressure, the device can be placed in an environmental chamber to simulate different temperatures, humidities and pressures, such as 40 ℃ of temperature, 80% RH of humidity and 80kPa of pressure, and the readings of the test hydrogen concentration sensor under different working conditions are compared with the concentration of standard gas to be calibrated.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. The utility model provides a quick test calibration device of hydrogen concentration sensor which characterized in that: the air purging device comprises a sealed explosion-proof box (1), a standard gas configuration unit (2), an air purging unit (3), an exhaust unit (4), a control system (5) and a power supply unit, wherein one side of the sealed explosion-proof box (1) is fixedly communicated with the standard gas configuration unit (2) and the air purging unit (3) respectively, the other side of the sealed explosion-proof box is fixedly communicated with the exhaust unit (4), the sealed explosion-proof box (1), the standard gas configuration unit (2), the air purging unit (3) and the exhaust unit (4) are all in signal connection with the control system (5), and the sealed explosion-proof box (1), the standard gas configuration unit (2), the air purging unit (3), the exhaust unit (4) and the control system (5) are all in electric connection with the power supply unit.
2. The quick test calibration device of the hydrogen concentration sensor according to claim 1, characterized in that: sealed explosion-proof box (1) includes box (11), surveyed support (12), pressure sensor (13) and temperature and humidity sensor (14), box (11) are cuboid hollow structure, box (11) inner wall bottom fixed connection pressure sensor (13) and temperature and humidity sensor (14), box (11) inner wall one side fixed connection is surveyed support (12), is used for placing by survey hydrogen concentration sensor (6) by survey support (12), and pressure sensor (13), temperature and humidity sensor (14), by survey equal signal connection of hydrogen concentration sensor (6) to control system (5).
3. The quick test calibration device for the hydrogen concentration sensor according to claim 2, characterized in that: the standard gas configuration unit (2) comprises a hydrogen divider (21), a flow controller (22) and a first electromagnetic valve (23), one end of the flow controller (22) is fixedly communicated to the hydrogen divider (21), the other end of the flow controller (22) is fixedly communicated to one end of the first electromagnetic valve (23), the other end of the first electromagnetic valve (23) is fixedly communicated to the inside of the box body (11) and is located at the bottom of the measured support (12), and the hydrogen divider (21), the flow controller (22) and the first electromagnetic valve (23) are all in signal connection with the control system (5).
4. The quick test calibration device for the hydrogen concentration sensor according to claim 2, characterized in that: the air purging unit (3) comprises a filter (31) and a second electromagnetic valve (32), one end of the second electromagnetic valve (32) is communicated to the filter (31), the other end of the second electromagnetic valve is fixedly communicated to the interior of the box body (11), and the second electromagnetic valve (32) is connected to the control system (5) in a signal mode.
5. The quick test calibration device for the hydrogen concentration sensor according to claim 2, characterized in that: exhaust unit (4) include No. three solenoid valve (41), convulsions subassembly (42) and drain (43), the one end of convulsions subassembly (42) is fixed to be linked to the one end of No. three solenoid valve (41), the one end peripheral hardware drain (43) of convulsions subassembly (42), the other end of No. three solenoid valve (41) is fixed to be linked to inside box (11), and No. three solenoid valve (41), equal signal connection of convulsions subassembly (42) are to control system (5).
6. A method for quickly testing and calibrating a hydrogen concentration sensor, which is applied to the device for quickly testing and calibrating a hydrogen concentration sensor according to any one of claims 1 to 5, and is characterized in that: the method comprises the following steps:
s1, placing the measured hydrogen concentration sensor (6) on the measured bracket (12);
s2, the control system (5) controls the hydrogen divider (21) to output hydrogen, controls the standard gas flow of the flow controller (22), opens the first electromagnetic valve (23) to make the standard gas enter the box body (11) and blow to the measured hydrogen concentration sensor (6);
s3, the control system (5) controls the opening pressure sensor (13), the temperature and humidity sensor (14) and the measured hydrogen concentration sensor (6), the pressure sensor (13), the temperature and humidity sensor (14) and the measured hydrogen concentration sensor (6) respectively transmit data to the control system (5), and the control system (5) compares the hydrogen concentration output by the hydrogen divider (21) to determine whether the accuracy of the measured hydrogen concentration sensor (6) meets the requirement;
and S4, controlling the hydrogen divider (21) in the standard gas configuration unit (2) by the control system (5) according to the parameters of the measured hydrogen concentration sensor (6), outputting hydrogen, sequentially reading the detection values of the measured hydrogen concentration sensor (6), drawing a standard gas concentration value and test value curve, and calibrating the hydrogen concentration sensor.
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| CN113125639A (en) * | 2021-03-08 | 2021-07-16 | 佛山仙湖实验室 | Calibration method and system for hydrogen concentration sensor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115825360A (en) * | 2023-02-21 | 2023-03-21 | 北京重理能源科技有限公司 | Calibration method and system for hydrogen concentration sensor of fuel cell vehicle |
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