CN220752062U - Hydrogen sensor test system - Google Patents
Hydrogen sensor test system Download PDFInfo
- Publication number
- CN220752062U CN220752062U CN202322231976.7U CN202322231976U CN220752062U CN 220752062 U CN220752062 U CN 220752062U CN 202322231976 U CN202322231976 U CN 202322231976U CN 220752062 U CN220752062 U CN 220752062U
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- Prior art keywords
- hydrogen
- sensor
- air inlet
- test box
- sensor test
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- 238000012360 testing method Methods 0.000 title claims abstract description 73
- 239000001257 hydrogen Substances 0.000 title claims abstract description 62
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 62
- 125000004435 hydrogen atom Chemical class [H]* 0.000 title 1
- 150000002431 hydrogen Chemical class 0.000 claims abstract description 46
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 20
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 9
- 239000008246 gaseous mixture Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model relates to the field of instrument and meter manufacturing, in particular to a hydrogen sensor testing system which comprises a hydrogen cylinder, a nitrogen cylinder and a mass flowmeter for adjusting mixed gas containing different hydrogen concentrations, wherein the hydrogen cylinder and the nitrogen cylinder are respectively connected with an air inlet of the mass flowmeter through pipelines, and the hydrogen sensor testing system further comprises a detection mechanism for simultaneously detecting a plurality of hydrogen sensors. The utility model can effectively reduce the interference of temperature and humidity and pressure in the environment on the hydrogen sensor, improve the testing precision, accurately know the performance of the hydrogen sensor, and simultaneously test a plurality of hydrogen sensors and improve the testing efficiency.
Description
Technical Field
The utility model relates to the field of instrument and meter manufacturing, in particular to a hydrogen sensor testing system.
Background
The test system of the hydrogen sensor is mainly applied to the test, performance test and calibration of the hydrogen sensor. The performance of the hydrogen sensor is comprehensively and accurately evaluated, no unified test system standard exists at present, when the temperature in the environment changes, the response speed of the hydrogen sensor changes, the resistance temperature coefficient of the sensing element also influences the test precision, and the humidity changes the response value of the sensor; when the pressure is too high, the linearity and sensitivity of the sensor are changed, so that when the hydrogen sensor is accurately tested, the environment condition is required to be synchronously tested or controlled;
most hydrogen sensor test systems in the market are large in volume, response recovery time of the hydrogen sensor is prolonged, sensor errors caused by factors such as temperature, humidity and pressure are difficult to compensate, and sensor test is inconvenient.
Disclosure of Invention
The present utility model has been made to solve the above problems, and an object of the present utility model is to provide a hydrogen sensor test system.
The utility model realizes the above purpose through the following technical scheme:
the hydrogen sensor testing system comprises a hydrogen cylinder, a nitrogen cylinder, a mass flowmeter for adjusting mixed gas containing different hydrogen concentrations, a detection mechanism for simultaneously detecting a plurality of hydrogen sensors, and a control unit, wherein the hydrogen cylinder and the nitrogen cylinder are connected to an air inlet of the mass flowmeter through pipelines respectively;
the detection mechanism comprises a first control component, a second control component and a sensor test box, wherein the first control component is arranged at an air inlet of the sensor test box, the second control component is arranged at an air outlet of the sensor test box, a channel for testing a plurality of hydrogen sensors is fixed on the sensor test box, a sealing connector is arranged on each channel of the sensor test box, the hydrogen sensors are positioned inside the channels of the sensor test box, and each hydrogen sensor is electrically connected with an ammeter through the sealing connector.
Preferably: the first control assembly comprises an air inlet back pressure valve, an air outlet of the air inlet back pressure valve is connected to an air inlet of the sensor test box through a pipeline, and an air inlet temperature and humidity pressure sensor is fixed on the pipeline between the air inlet back pressure valve and the sensor test box.
Preferably: the second control assembly comprises an air outlet back pressure valve, an air inlet of the air outlet back pressure valve is connected with an air outlet of the sensor test box through a pipeline, and an air outlet temperature and humidity pressure sensor is fixed on the pipeline between the sensor test box and the air outlet back pressure valve.
Preferably: and an air inlet of the air inlet backpressure valve is connected with an air outlet of the mass flowmeter through a pipeline.
Compared with the prior art, the utility model has the following beneficial effects:
1. the interference of temperature and humidity and pressure in the environment on the hydrogen sensor can be effectively reduced, the testing precision is improved, and the performance of the hydrogen sensor is accurately known.
2. The test can be carried out on a plurality of hydrogen sensors simultaneously, and the test efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of a hydrogen sensor testing system according to the present utility model;
FIG. 2 is a partial detail view of a seal connector of a hydrogen sensor testing system according to the present utility model;
FIG. 3 is a schematic view of a sealed connector installation of a hydrogen sensor testing system according to the present utility model.
The reference numerals are explained as follows:
1. a hydrogen cylinder; 2. a nitrogen cylinder; 3. a mass flowmeter; 4. an air inlet back pressure valve; 5. an air inlet temperature and humidity pressure sensor; 6. a sensor test box; 7. sealing the connector; 8. a temperature and humidity pressure sensor at the air outlet; 9. an air outlet back pressure valve; 10. an electricity meter.
Detailed Description
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.
The utility model is further described below with reference to the accompanying drawings:
as shown in fig. 1-3, a hydrogen sensor testing system comprises a hydrogen cylinder 1, a nitrogen cylinder 2, a mass flowmeter 3 for adjusting mixed gas containing different hydrogen concentrations, and a detection mechanism for simultaneously detecting a plurality of hydrogen sensors, wherein the hydrogen cylinder 1 and the nitrogen cylinder 2 are respectively connected with an air inlet of the mass flowmeter 3 through pipelines;
in this embodiment: the detection mechanism comprises a first control component, a second control component and a sensor test box 6, wherein the first control component is arranged at an air inlet of the sensor test box 6, the second control component is arranged at an air outlet of the sensor test box 6, a channel for testing a plurality of hydrogen sensors is fixed on the sensor test box 6, a sealing connector 7 is arranged on each channel of the sensor test box 6, the hydrogen sensors are located inside the channels of the sensor test box 6, each hydrogen sensor is electrically connected with an ammeter 10 through the sealing connector 7, a plurality of channels on the sensor test box 6 can provide quick corresponding environments for the plurality of sensors, and the ammeter 10 is used for testing the plurality of hydrogen sensors.
In this embodiment: the first control assembly comprises an air inlet back pressure valve 4, an air outlet of the air inlet back pressure valve 4 is connected to an air inlet of a sensor test box 6 through a pipeline, an air inlet temperature and humidity pressure sensor 5 is fixed on the pipeline between the air inlet back pressure valve 4 and the sensor test box 6, an air inlet of the air inlet back pressure valve 4 is connected with an air outlet of a mass flowmeter 3 through a pipeline, the air pressure of air entering the sensor test box 6 is regulated by the air inlet back pressure valve 4, and the air temperature and humidity of air entering the sensor test box 6 are detected by the air inlet temperature and humidity pressure sensor 5.
In this embodiment: the second control assembly comprises an air outlet back pressure valve 9, an air inlet of the air outlet back pressure valve 9 is connected with an air outlet of the sensor test box 6 through a pipeline, an air outlet temperature and humidity pressure sensor 8 is fixed on the pipeline between the sensor test box 6 and the air outlet back pressure valve 9, the air pressure of the air sent out of the sensor test box 6 is controlled by the air outlet back pressure valve 9, and meanwhile the temperature and humidity of the air sent out by the sensor test box 6 are detected by the air outlet temperature and humidity pressure sensor 8.
Working principle: the gas flow rates of the hydrogen cylinder 1 and the nitrogen cylinder 2 are adjusted through the mass flowmeter 3 to realize mixed gas with different hydrogen concentrations, the mixed gas is introduced into the sensor test box 6, the air inlet back pressure valve 4 and the air inlet temperature and humidity pressure sensor 5 are arranged at the air inlet of the multichannel sensor test box 6 so as to adjust the gas pressure of the air inlet, the temperature and humidity pressure of the air inlet is measured, and the hydrogen sensor is arranged inside the sensor test box 6;
as shown in fig. 3, the sealing connector 7 can connect the hydrogen sensor of each channel with the external ammeter 10, so that a plurality of hydrogen sensors can be tested at the same time, the testing efficiency is improved, and in addition, the sealing connector 7 can be replaced by an aviation plug;
a temperature and humidity pressure sensor 8 and a back pressure valve 9 are arranged at the air outlet, the air pressure at the air outlet of the sensor test box 6 is controlled, and the temperature and humidity pressure at the air outlet is tested; the device can accurately sense the environmental conditions tested by the hydrogen sensor, is convenient for comprehensively testing and evaluating the performance of the hydrogen sensor, and can carry out the subsequent work of sensor compensation, calibration and the like.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.
Claims (4)
1. The utility model provides a hydrogen sensor test system, includes hydrogen cylinder (1), nitrogen cylinder (2) and is used for adjusting mass flowmeter (3) that contain different hydrogen concentration gaseous mixture, hydrogen cylinder (1) with nitrogen cylinder (2) are respectively through pipe connection at mass flowmeter (3) air inlet, its characterized in that: the device also comprises a detection mechanism for simultaneously detecting a plurality of hydrogen sensors;
the detection mechanism comprises a first control component, a second control component and a sensor test box (6), wherein the first control component is arranged at an air inlet of the sensor test box (6), the second control component is arranged at an air outlet of the sensor test box (6), a channel for testing a plurality of hydrogen sensors is fixed on the sensor test box (6), a sealing connector (7) is arranged on each channel of the sensor test box (6), the hydrogen sensors are positioned inside the channels of the sensor test box (6), and each hydrogen sensor is electrically connected with an ammeter (10) through the sealing connector (7).
2. A hydrogen sensor testing system according to claim 1, wherein: the first control assembly comprises an air inlet back pressure valve (4), an air outlet of the air inlet back pressure valve (4) is connected to an air inlet of the sensor test box (6) through a pipeline, and an air inlet temperature and humidity pressure sensor (5) is fixed on the pipeline between the air inlet back pressure valve (4) and the sensor test box (6).
3. A hydrogen sensor testing system according to claim 1, wherein: the second control assembly comprises an air outlet back pressure valve (9), an air inlet of the air outlet back pressure valve (9) is connected with an air outlet of the sensor test box (6) through a pipeline, and an air outlet temperature and humidity pressure sensor (8) is fixed on the pipeline between the sensor test box (6) and the air outlet back pressure valve (9).
4. A hydrogen sensor testing system according to claim 2, wherein: and an air inlet of the air inlet backpressure valve (4) is connected with an air outlet of the mass flowmeter (3) through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322231976.7U CN220752062U (en) | 2023-08-18 | 2023-08-18 | Hydrogen sensor test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322231976.7U CN220752062U (en) | 2023-08-18 | 2023-08-18 | Hydrogen sensor test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220752062U true CN220752062U (en) | 2024-04-09 |
Family
ID=90569871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322231976.7U Active CN220752062U (en) | 2023-08-18 | 2023-08-18 | Hydrogen sensor test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220752062U (en) |
-
2023
- 2023-08-18 CN CN202322231976.7U patent/CN220752062U/en active Active
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