CN215768465U - Hydrogen sensor performance evaluation device - Google Patents
Hydrogen sensor performance evaluation device Download PDFInfo
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- CN215768465U CN215768465U CN202121736803.5U CN202121736803U CN215768465U CN 215768465 U CN215768465 U CN 215768465U CN 202121736803 U CN202121736803 U CN 202121736803U CN 215768465 U CN215768465 U CN 215768465U
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Abstract
The utility model provides a hydrogen sensor performance evaluation device which comprises a gas distribution part, a micro evaluation cabin, a temperature regulation part, a hydrogen detection part and an exhaust emission part, wherein the gas distribution part is communicated with one end of the micro evaluation cabin, the gas distribution part is used for diluting hydrogen with standard concentration into gas containing preset hydrogen concentration and conveying the gas to the micro evaluation cabin, the temperature regulation part is fixedly arranged between the gas distribution part and the micro evaluation cabin, the temperature regulation part is used for changing the temperature of the gas conveyed to the micro evaluation cabin by the gas distribution part, the hydrogen detection part is fixedly arranged on the micro evaluation cabin, the hydrogen detection part is used for detecting the hydrogen concentration in the micro evaluation cabin, and the exhaust emission part is communicated with the micro evaluation cabin. The utility model realizes the performance detection and evaluation of the hydrogen sensor under different conditions, thereby promoting the rapid application of the hydrogen sensor.
Description
Technical Field
The utility model relates to the technical field of sensor performance evaluation, in particular to a hydrogen sensor performance evaluation device.
Background
Hydrogen is called three new energy sources together with solar energy and nuclear energy because of its advantages of high combustion efficiency, no pollution of products and the like. But hydrogen molecules are very small, are easy to leak in the processes of production, storage, transportation and use, are colorless and tasteless, are not easy to be detected by the nose, and explode when meeting open fire within the range of 4-75 percent in the air. As the application of hydrogen in various fields becomes more and more extensive, the problem of hydrogen safety also becomes more and more important.
In order to ensure the safety of hydrogen in the production and use processes, a hydrogen sensor is needed to accurately detect the concentration of hydrogen in real time and send control information most of the time. Therefore, in the process of developing and utilizing the hydrogen energy source, the performance evaluation of the hydrogen sensor is also a very critical part, and the safety of the use of the hydrogen energy source can be ensured only if the performance of the hydrogen sensor is ensured to be excellent. However, at present, no detection device can accurately detect the hydrogen sensor, and particularly, the performance of the hydrogen sensor under different conditions is difficult to evaluate and detect, so that the hydrogen sensor is difficult to rapidly apply.
SUMMERY OF THE UTILITY MODEL
The utility model provides a hydrogen sensor performance evaluation device, which is used for solving the problems that a detection device can accurately detect a hydrogen sensor in the prior art, particularly the performance of the hydrogen sensor under different conditions is difficult to evaluate and detect, so that the hydrogen sensor is difficult to rapidly apply, the performance detection and evaluation of the hydrogen sensor under different conditions are realized, and the rapid application of the hydrogen sensor is promoted.
The utility model provides a hydrogen sensor performance evaluation device, which comprises a gas distribution component, a micro evaluation cabin, a temperature regulation component, a hydrogen detection component and a tail gas emission component, wherein the gas distribution component is arranged on the micro evaluation cabin;
the gas distribution component is communicated with one end of the micro evaluation cabin and is used for diluting hydrogen with standard concentration into gas with preset hydrogen concentration and conveying the gas to the micro evaluation cabin;
the temperature adjusting part is fixedly arranged between the gas distribution part and the micro evaluation cabin and is used for changing the temperature of the gas delivered to the micro evaluation cabin by the gas distribution part;
the hydrogen detection component is fixedly arranged on the micro evaluation cabin and is used for detecting the hydrogen concentration in the micro evaluation cabin;
the tail gas emission component is communicated with the other end of the micro evaluation cabin.
According to the performance evaluation device for the hydrogen sensor provided by the utility model, a cavity is arranged in the micro evaluation cabin, and the cavity is of a spindle-shaped structure.
According to the hydrogen sensor performance evaluation device provided by the utility model, the hydrogen detection part comprises a sensor fixing block, a hydrogen sensor and a signal transmission piece, the sensor fixing block is fixedly arranged on the micro evaluation cabin, the hydrogen sensor is fixedly arranged on the sensor fixing block, the hydrogen sensor is communicated with the inside of the micro evaluation cabin, and one end of the signal transmission piece is connected with the hydrogen sensor.
According to the hydrogen sensor performance evaluation device provided by the utility model, the hydrogen detection part further comprises a temperature control piece, the temperature control piece is installed on the sensor fixing block, and one end of the temperature control piece is connected with the hydrogen sensor.
According to the hydrogen sensor performance evaluation device provided by the utility model, the hydrogen detection component further comprises a first probe and a second probe, one end of the first probe is connected with the temperature control component, the other end of the first probe is connected with the hydrogen sensor, one end of the second probe is connected with the signal transmission component, and the other end of the second probe is connected with the hydrogen sensor.
According to the hydrogen sensor performance evaluation device provided by the utility model, each of the first probe and the second probe comprises a fixing part and a connecting part, one end of the fixing part of the first probe is connected with the temperature control part, one end of the fixing part of the second probe is connected with the signal transmission part, and one end of the connecting part is movably connected with the other end of the fixing part.
According to the hydrogen sensor performance evaluation device provided by the utility model, the hydrogen sensor performance evaluation device further comprises a temperature detection piece, the temperature detection piece is fixedly arranged on the micro evaluation cabin, and the temperature detection piece is used for detecting the temperature in the micro evaluation cabin.
According to the hydrogen sensor performance evaluation device provided by the utility model, the gas distribution part comprises a background gas storage tank, a first mass flow meter, a mixing chamber, a hydrogen storage tank and a second mass flow meter, wherein one end of the first mass flow meter is communicated with the background gas storage tank, the other end of the first mass flow meter is communicated with one input port of the mixing chamber, one end of the second mass flow meter is communicated with the hydrogen storage tank, the other end of the second mass flow meter is communicated with the other input port of the mixing chamber, and an output port of the mixing chamber is communicated with one end of the micro-evaluation chamber.
According to the performance evaluation device of the hydrogen sensor provided by the utility model, the gas distribution component is communicated with one end of the micro evaluation cabin through a first pipeline, the temperature regulation component comprises a heater, a refrigerator and a controller, the heater and the refrigerator are respectively and fixedly arranged on the first pipeline, and the heater and the refrigerator are respectively and electrically connected with the controller.
According to the hydrogen sensor performance evaluation device provided by the utility model, the tail gas emission component comprises at least one check valve, and the check valve is communicated with the other end of the micro evaluation cabin.
According to the hydrogen sensor performance evaluation device provided by the utility model, hydrogen with standard concentration is diluted into gas containing hydrogen with specific concentration through the gas distribution component, then the gas is conveyed to the micro evaluation cabin through the gas distribution component, the temperature of the gas is regulated by the temperature regulation component according to the evaluation requirement in the gas conveying process of the gas distribution component, so that the temperature of the gas conveyed into the micro evaluation cabin meets the hydrogen evaluation requirement, after the gas is conveyed into the micro evaluation cabin, the hydrogen sensor of the hydrogen detection component detects the hydrogen concentration in the gas and transmits the detection data to the related terminal, the detected gas is discharged out of the micro evaluation cabin through the tail gas discharge component, then the hydrogen concentration and the temperature of the gas conveyed into the micro evaluation cabin can be regulated in real time through changing the gas concentration in the gas generated by the gas distribution component and changing the temperature of the gas conveyed into the micro evaluation cabin through the temperature regulation component, the performance evaluation test of the hydrogen sensor is realized, and the rapid application of the hydrogen sensor is further promoted.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a hydrogen sensor performance evaluation device provided by the present invention;
FIG. 2 is a schematic structural view of a hydrogen detecting member of the hydrogen sensor performance evaluating apparatus according to the present invention;
reference numerals:
1: a gas distribution part; 2: a micro evaluation cabin; 3: a temperature adjustment member;
4: a hydrogen gas detection part; 5: an exhaust gas emission component; 6: a temperature detection member;
11: a background gas storage tank; 12: a first mass flow meter; 13: a mixing chamber;
14: a hydrogen storage tank; 15: a second mass flow meter; 41: a sensor fixing block;
42: a hydrogen sensor; 43: a signal transmission member; 44: a temperature control member;
45: a first probe; 46: a second probe; 47: a fixed part;
48: a connecting portion; 51: a check valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The performance evaluation device of the hydrogen sensor according to the present invention is described below with reference to fig. 1 and 2, and includes a gas distribution unit 1, a micro evaluation chamber 2, a temperature adjustment unit 3, a hydrogen detection unit 4, and an exhaust emission unit 5.
Specifically, in the embodiment of the present invention, the gas distribution member 1 is communicated with one end of the micro-evaluation chamber 2, and the gas distribution member 1 is used for diluting the hydrogen gas with the standard concentration into the gas containing the preset hydrogen concentration and delivering the gas to the micro-evaluation chamber 2. The temperature adjusting component 3 is fixedly arranged between the gas distribution component 1 and the micro evaluation cabin 2, and the temperature adjusting component 3 is used for changing the temperature of the gas delivered to the micro evaluation cabin 2 by the gas distribution component 1. The hydrogen detection component 4 is fixedly arranged on the micro evaluation cabin 2, and the hydrogen detection component 4 is used for detecting the hydrogen concentration in the micro evaluation cabin 2. The tail gas emission component 5 is communicated with the other end of the micro evaluation cabin 2.
In use, a gas containing hydrogen at a specific concentration is generated by the gas distribution part 1, and then the gas distribution part 1 delivers the gas to the micro evaluation chamber 2. During the gas delivery process of the gas distribution component 1, the temperature regulating component 3 regulates the temperature of the gas according to the evaluation requirement, so that the temperature of the gas delivered into the micro evaluation chamber 2 meets the hydrogen evaluation requirement. After the gas is delivered to the micro evaluation cabin 2, the hydrogen sensor of the hydrogen detection part 4 detects the hydrogen concentration in the gas and transmits the detection data to the relevant terminal. The detected gas is discharged out of the micro evaluation cabin 2 through the tail gas discharge component 5, and then the concentration of the gas in the gas generated by the gas distribution component 1 is changed, and the temperature of the gas conveyed into the micro evaluation cabin 2 is changed through the temperature adjusting component 3, so that the hydrogen concentration and the temperature of the gas in the micro evaluation cabin 2 can be adjusted in real time. And because the volume of the micro evaluation cabin 2 is smaller, the rapid replacement of the gas in the evaluation cabin can be realized, and the gas replacement rate is improved. The hydrogen concentration in the gas conveyed to the micro evaluation cabin 2 by the gas distribution part 1 and the hydrogen concentration detected by the hydrogen sensor of the hydrogen detection part 4 can be used for evaluating the performance of the hydrogen detection part 4, so that the performance detection and evaluation of the hydrogen sensor under different conditions are realized, and the rapid application of the hydrogen sensor is further promoted.
Further, a cavity is arranged inside the micro evaluation chamber 2, wherein in an alternative embodiment of the present invention, the cavity is in a spindle-shaped structure, and the volume of the cavity is small. When the hydrogen sensor is used, the cavity of the spindle-shaped structure can effectively restrict gas diffusion, a low Reynolds number and a stable gas flow field are kept, and the volume of the cavity is small, so that the rapid replacement of the gas in the cavity can be realized, the gas replacement rate is improved, the detection of the hydrogen sensor of the hydrogen detection component 4 is more accurate, the performance evaluation of the hydrogen sensor is more accurate, and the application of the hydrogen sensor is more facilitated. It should be understood that the cavity may be any other suitable shape.
Further, as shown in fig. 1, the hydrogen detecting part 4 includes a sensor fixing block 41, a hydrogen sensor 42, and a signal transmitting member 43. The sensor fixed block is fixedly installed on the micro evaluation cabin 2, the hydrogen sensor 42 is fixedly installed on the sensor fixed block 41, the hydrogen sensor 42 is communicated with the inside of the micro evaluation cabin 2, and one end of the signal transmission piece 43 is connected with the hydrogen sensor 42. When in use, after the gas distribution component 1 delivers gas into the micro evaluation chamber 2, the hydrogen sensor 42 detects the hydrogen concentration of the gas and transmits the detection data to the outside through the signal transmission piece 43. Then, by comparing the hydrogen concentration in the gas delivered into the micro evaluation cabin 2 by the gas distribution part 1 with the hydrogen concentration detected by the hydrogen sensor 42 of the hydrogen detection part 4, whether the detection of the hydrogen detection part 4 is accurate can be known, so that the performance detection and evaluation of the hydrogen sensor under different conditions are realized, and the rapid application of the hydrogen sensor is further promoted.
In alternative embodiments of the present invention, the sensor fixing block 41 is fixed to the upper end of the micro-scale evaluation chamber 2, for example, but it should be understood that the sensor fixing block 41 may be fixedly installed at other suitable positions on the micro-scale evaluation chamber 2.
In an alternative embodiment of the present invention, the signal transmission element 43 is, for example, a digital source meter. It should be understood that any other suitable element having a signal transmission function may be used as the signal transmission member 43.
As shown in fig. 1, the hydrogen detecting part 4 further includes a temperature control member 44, the temperature control member 44 is mounted on the sensor fixing block 41, and one end of the temperature control member 44 is connected to the hydrogen sensor 42. In use, the temperature control 44 may change the temperature of the hydrogen sensor 42 in real time so that the hydrogen sensor 42 may perform different operating temperature tests. The hydrogen sensor 42 can be used for testing various performance parameters, the evaluation accuracy of the hydrogen sensor is ensured, and the performance detection and evaluation accuracy of the hydrogen sensor is further ensured.
As shown in fig. 2, the hydrogen detecting component 4 further includes a first probe 45 and a second probe 46, one end of the first probe 45 is connected to the temperature control member 44, the other end of the first probe 45 is connected to the hydrogen sensor 42, one end of the second probe 46 is connected to the signal transmission member 43, and the other end of the second probe 46 is connected to the hydrogen sensor 42. In use, the voltage of the first probe 45 is changed by the temperature control member 44, so that the voltage of the hydrogen sensor is changed, the heat generated by the hydrogen sensor is different under different working voltages, and the temperature of the hydrogen sensor 42 is changed, so that the hydrogen sensor 42 can adjust the working temperature. The hydrogen sensor 42 transmits the detection signal to the signal transmitting member 43 through the second probe 46, and then transmits the detection signal to the terminal of the outside through the signal transmitting member 43.
In an alternative embodiment of the present invention, the first probe 45 and the second probe 46 are gold alloy probes, for example, but it should be understood that the first probe 45 and the second probe 46 may be made of any other suitable material.
As shown in fig. 2, each of the first probe 45 and the second probe 46 includes a fixing portion 47 and a connecting portion 48, one end of the fixing portion 47 of the first probe 45 is connected to the temperature control member 44, one end of the fixing portion 47 of the second probe 46 is connected to the signal transmission member 43, and one end of the connecting portion 48 is movably connected to the other end of the fixing portion 47. When using, according to hydrogen sensor 42's size, through applying external force to connecting portion 48 for connecting portion 48 takes place to rotate, makes connecting portion 48 just can with hydrogen sensor 42 butt, makes hydrogen sensor 42 can steady operation, and then makes hydrogen sensor performance evaluation device can be applicable to the hydrogen sensor of different specifications.
Further, as shown in fig. 1, the hydrogen sensor performance evaluation device further includes a temperature detection element 6, the temperature detection element 6 is fixedly mounted on the micro evaluation chamber 2, and the temperature detection element 6 is used for detecting the temperature in the micro evaluation chamber 2. When the temperature detection device is used, the temperature detection part 6 detects the temperature in the micro evaluation cabin 2 in real time, and sends a detection signal to the processor for processing, so as to judge whether the difference value between the temperature value detected by the temperature detection part 6 and the preset gas temperature value exceeds the preset value. The temperature of the gas to be detected in the micro evaluation cabin 2 is ensured to be consistent with the preset gas temperature, and the accuracy of performance detection and evaluation of the hydrogen sensor is ensured.
In an alternative embodiment of the present invention, the temperature detecting element 6 is, for example, a temperature sensor. It should be understood that any other suitable element having a temperature detecting function may be used as the temperature detecting member 6.
Further, as shown in fig. 1, the gas distribution section 1 includes a background gas storage tank 11, a first mass flow meter 12, a mixing chamber 13, a hydrogen storage tank 14, and a second mass flow meter 15. One end of the first mass flow meter 12 communicates with the background gas storage tank 11, and the other end of the first mass flow meter 12 communicates with one of the input ports of the mixing chamber 13. One end of the second mass flow meter 15 is communicated with the hydrogen storage tank 14, the other end of the second mass flow meter 15 is communicated with the other input port of the mixing chamber 13, and the output port of the mixing chamber 13 is communicated with one end of the micro evaluation chamber 2. In use, the first mass flow meter 12 and the second mass flow meter 15 are simultaneously opened so that the background gas and hydrogen gas simultaneously enter the mixing chamber 13. The amount of the background gas supplied from the background gas storage tank 11 into the mixing chamber 13 is detected by the first mass flow meter 12, and when a preset value is reached, the supply of the background gas into the mixing chamber 13 is stopped. The second mass flow meter 15 detects the amount of hydrogen gas delivered from the hydrogen storage tank 14 into the mixing chamber 13, and when a preset value is reached, the delivery of hydrogen gas into the mixing chamber 13 is stopped, so that the hydrogen gas in the mixing chamber 13 and the background gas are mixed to obtain a gas containing a preset hydrogen concentration. And the hydrogen storage tank 14 can be closed, the background gas storage tank 11 is opened, namely, only the background gas is conveyed into the mixing chamber 13, then the background gas is heated by the temperature adjusting component 3 and conveyed to the micro evaluation cabin 2, so that the micro evaluation cabin 2 is purged at high temperature, the self-cleaning of the device is realized, and the influence of internal pollution on the evaluation of the hydrogen sensor 42 can be effectively avoided.
Further, the air distribution part 1 is communicated with one end of the micro evaluation cabin 2 through a first pipeline, the temperature adjusting part 3 comprises a heater, a refrigerator and a controller, the heater and the refrigerator are respectively and fixedly installed on the first pipeline, and the heater and the refrigerator are respectively and electrically connected with the controller. When the temperature of the gas conveyed into the micro evaluation chamber 2 needs to be increased in use, the controller controls the heater to start working, the refrigerator to stop working, the temperature of the first pipeline is increased, and the temperature of the gas entering the micro evaluation chamber 2 through the first pipeline is increased. When the temperature of the gas conveyed into the micro evaluation chamber 2 needs to be reduced, the controller controls the heater to stop working, the refrigerator starts working, the temperature of the first pipeline is reduced, and the temperature of the gas entering the micro evaluation chamber 2 through the first pipeline is reduced. The temperature of the gas entering the micro evaluation chamber 2 can be adjusted according to actual requirements.
Further, as shown in fig. 1, the exhaust gas discharge unit 5 includes at least one check valve 51, and the check valve 51 is communicated with the other end of the micro evaluation chamber 2. In use, the gas in the micro-chamber 2 is detected and vented through the check valve 51.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A performance evaluation device of a hydrogen sensor is characterized by comprising a gas distribution component, a micro evaluation cabin, a temperature regulation component, a hydrogen detection component and a tail gas emission component;
the gas distribution component is communicated with one end of the micro evaluation cabin and is used for diluting hydrogen with standard concentration into gas with preset hydrogen concentration and conveying the gas to the micro evaluation cabin;
the temperature adjusting part is fixedly arranged between the gas distribution part and the micro evaluation cabin and is used for changing the temperature of the gas delivered to the micro evaluation cabin by the gas distribution part;
the hydrogen detection component is fixedly arranged on the micro evaluation cabin and is used for detecting the hydrogen concentration in the micro evaluation cabin;
the tail gas emission component is communicated with the other end of the micro evaluation cabin.
2. The hydrogen sensor performance evaluation device according to claim 1, wherein a cavity is arranged inside the micro evaluation cabin, and the cavity is of a spindle-shaped structure.
3. The hydrogen sensor performance evaluation device according to claim 1 or 2, wherein the hydrogen detection component comprises a sensor fixing block, a hydrogen sensor and a signal transmission member, the sensor fixing block is fixedly mounted on the micro evaluation chamber, the hydrogen sensor is fixedly mounted on the sensor fixing block, the hydrogen sensor is communicated with the inside of the micro evaluation chamber, and one end of the signal transmission member is connected with the hydrogen sensor.
4. The hydrogen sensor performance evaluation device according to claim 3, wherein the hydrogen detection means further comprises a temperature control member, the temperature control member being mounted on the sensor fixing block, one end of the temperature control member being connected to the hydrogen sensor.
5. The hydrogen sensor performance evaluation device according to claim 4, wherein the hydrogen detection means further includes a first probe and a second probe, one end of the first probe is connected to the temperature control member, the other end of the first probe is connected to the hydrogen sensor, one end of the second probe is connected to the signal transmission member, and the other end of the second probe is connected to the hydrogen sensor.
6. The hydrogen sensor performance evaluation device according to claim 5, wherein each of the first probe and the second probe includes a fixing portion and a connecting portion, one end of the fixing portion of the first probe is connected to the temperature control member, one end of the fixing portion of the second probe is connected to the signal transmission member, and one end of the connecting portion is movably connected to the other end of the fixing portion.
7. The hydrogen sensor performance evaluation device according to claim 1 or 2, further comprising a temperature detection member, wherein the temperature detection member is fixedly mounted on the micro evaluation chamber, and the temperature detection member is used for detecting the temperature in the micro evaluation chamber.
8. The hydrogen sensor performance evaluation device according to claim 1 or 2, wherein the gas distribution component comprises a background gas storage tank, a first mass flow meter, a mixing chamber, a hydrogen storage tank, and a second mass flow meter, one end of the first mass flow meter is communicated with the background gas storage tank, the other end of the first mass flow meter is communicated with one of the input ports of the mixing chamber, one end of the second mass flow meter is communicated with the hydrogen storage tank, the other end of the second mass flow meter is communicated with the other input port of the mixing chamber, and the output port of the mixing chamber is communicated with one end of the micro evaluation chamber.
9. The hydrogen sensor performance evaluation device according to claim 1 or 2, wherein the gas distribution component communicates with one end of the micro evaluation chamber through a first pipe, the temperature adjustment component comprises a heater, a refrigerator and a controller, the heater and the refrigerator are respectively fixedly mounted on the first pipe, and the heater and the refrigerator are respectively electrically connected with the controller.
10. The hydrogen sensor performance evaluation device according to claim 1 or 2, wherein the exhaust gas discharge means comprises at least one check valve, and the check valve is communicated with the other end of the micro evaluation chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121736803.5U CN215768465U (en) | 2021-07-28 | 2021-07-28 | Hydrogen sensor performance evaluation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121736803.5U CN215768465U (en) | 2021-07-28 | 2021-07-28 | Hydrogen sensor performance evaluation device |
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| CN215768465U true CN215768465U (en) | 2022-02-08 |
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| CN202121736803.5U Active CN215768465U (en) | 2021-07-28 | 2021-07-28 | Hydrogen sensor performance evaluation device |
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- 2021-07-28 CN CN202121736803.5U patent/CN215768465U/en active Active
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