CN220552828U - Device for checking performance of gas sensor - Google Patents
Device for checking performance of gas sensor Download PDFInfo
- Publication number
- CN220552828U CN220552828U CN202321388408.1U CN202321388408U CN220552828U CN 220552828 U CN220552828 U CN 220552828U CN 202321388408 U CN202321388408 U CN 202321388408U CN 220552828 U CN220552828 U CN 220552828U
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- gas
- detection
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- distribution box
- gas sensor
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- 238000001514 detection method Methods 0.000 claims abstract description 137
- 238000009826 distribution Methods 0.000 claims abstract description 86
- 238000012360 testing method Methods 0.000 claims abstract description 9
- 238000004880 explosion Methods 0.000 claims description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 8
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 abstract description 5
- 238000012216 screening Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 167
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
An apparatus for testing the performance of a gas sensor, comprising: the device comprises an air distribution box, a detection box communicated with the air distribution box and a gas sensor to be detected, wherein the gas sensor is arranged in the detection box; the volume of the air distribution box is larger than that of the detection box; the gas distribution box is filled with detection gas with specific concentration, and the detection gas with specific concentration is introduced from the gas distribution box and fills the detection box, so that the gas sensor to be detected gives an alarm. And (3) introducing the detection gas with specific concentration into the detection box, namely, detecting the performance of the gas sensor to be detected in the detection box, and screening out qualified gas sensor products. The device simple structure, convenient operation has greatly reduced detection cost to inspection efficiency has been promoted.
Description
Technical Field
The utility model relates to the field of sensors, in particular to a device for testing the performance of a gas sensor.
Background
The gas sensor is a device capable of detecting the concentration of specific gas in air, and is widely applied to the fields of environmental monitoring, industrial production, medical treatment and health and the like. In order to ensure the accuracy and reliability of the gas sensor, it is necessary to perform a performance test thereon.
Currently, a commonly used gas sensor performance test method is a standard gas test method. However, the standard gas inspection method requires the use of expensive standard gas and is cumbersome to operate, and thus is not suitable for a gas sensor for mass production.
Disclosure of Invention
The utility model provides a simple, economical and reliable gas sensor performance inspection device, which solves the problems in the prior art. The specific technical scheme is as follows:
an apparatus for testing the performance of a gas sensor, comprising: the gas distribution box, a detection box communicated with the gas distribution box and a gas sensor to be detected arranged in the detection box; the volume of the air distribution box is larger than that of the detection box; the gas distribution box is filled with detection gas with specific concentration, and the detection gas with specific concentration is introduced from the gas distribution box and fills the detection box, so that the gas sensor to be detected gives an alarm.
Further, the gas distribution box is provided with a gas distribution channel, and the detection gas enters the gas distribution box from the gas distribution channel to prepare the detection gas with specific concentration.
Further, the device also comprises a detection device, and the gas distribution box is communicated with the detection device to detect the concentration of the detected gas in the gas distribution box.
Further, the gas distribution box is communicated with the detection box through the gas inlet channel and the gas outlet channel, detection gas with specific concentration enters the detection box through the gas inlet channel, and initial gas in the detection box is extruded to be discharged through the gas outlet channel and enters the gas distribution box.
Further, air valves are arranged on the air inlet channels and/or the air outlet channels.
Further, an air pump is arranged between the air distribution box and the detection box so as to pump the detection gas with specific concentration in the air distribution box into the detection box through the air inlet channel.
Further, the number of the detection boxes is plural.
Further, the volume ratio of the air distribution box to the detection box is greater than 20:1.
Further, the detection gas is a combustible gas, and the specific concentration is an explosion lower limit value corresponding to the detection gas.
Further, the combustible gas is methane or carbon monoxide.
The utility model has the beneficial effects that: the detection gas with specific concentration is configured in the gas distribution box in advance, and the detection gas is introduced into the detection box, so that the detection device can be used for detecting the performance of the gas sensor to be detected in the detection box, screening out qualified gas sensor products, and detecting the products reliably due to the fact that the detection is carried out by simulating actual conditions. The device simple structure, convenient operation has greatly reduced detection cost to promoted inspection efficiency, be worth popularizing and applying.
The foregoing description is only an overview of the present utility model, and is intended to be implemented in accordance with the teachings of the present utility model in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present utility model more readily apparent.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures.
Fig. 1 is a perspective view of the present utility model.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to FIG. 1, an apparatus for testing performance of a gas sensor includes: the gas distribution box 2, a detection box 6 communicated with the gas distribution box 2 and a gas sensor 4 to be detected arranged in the detection box 6; the volume of the air distribution box 2 is larger than that of the detection box 6; the gas distribution box 2 contains detection gas with specific concentration, and the detection gas with specific concentration is introduced from the gas distribution box 2 and fills the detection box 6, so that the gas sensor 4 to be detected gives an alarm.
Further, a specific concentration of the detection gas may be disposed in the gas distribution box 2 by the gas storage device 9, and the specific concentration of the detection gas is preset in advance by the gas type and concentration, so that the standard gas sensor 3 gives an alarm when detecting the gas of the specific concentration. That is, if the detection gas is introduced into and fills the detection case 6, the gas sensor 4 to be measured provided in the detection case 6 also generates an alarm, and therefore, when the gas sensor 4 to be measured is filled in the detection case 6 with the detection gas, the performance thereof is judged by observing whether the gas sensor 4 to be measured is alarm or not.
From the above description, the beneficial effects of the utility model are as follows: the detection gas with specific concentration is prepared in the gas distribution box 2 and is introduced into the detection box 6, so that the gas distribution box can be used for detecting the performance of the gas sensor 4 to be detected in the detection box 6, and qualified gas sensor products are screened out. The device simple structure, convenient operation has greatly reduced detection cost to inspection efficiency has been promoted.
Further, the gas distribution box 2 is provided with a gas distribution channel 21, and the detection gas enters the gas distribution box 2 from the gas distribution channel 21 to configure the detection gas with a specific concentration.
Further, a detecting device 7 is further included, and the gas distribution box 2 is communicated with the detecting device 7 to detect the concentration of the detected gas in the gas distribution box 2.
As is apparent from the above description, the detection gas enters the gas distribution box 2 through the gas distribution channel 21 provided on the gas distribution box 2, thereby preparing the detection gas of a specific concentration. In some embodiments, the detection device 7 is connected to the gas distribution box 2, the concentration of the detected gas in the gas distribution box 2 is measured by the detection device 7, and when a specific concentration value is reached, the gas inlet is stopped, so that the configuration of the detected gas can be completed.
The gas distribution box 2 is communicated with the detection box 6 through a gas inlet channel 601 and a gas outlet channel 602, detection gas with specific concentration enters the detection box 6 through the gas inlet channel 601, and initial gas in the detection box 6 is extruded to be discharged through the gas outlet channel 602 and enters the gas distribution box 2. Air valves are arranged on the air inlet channel 601 and/or the air outlet channel 602. An air pump 8 is further arranged between the air distribution box 2 and the detection box 6 to pump the detection gas with specific concentration in the air distribution box 2 into the detection box 6 through an air inlet channel 601. The number of the detection boxes 6 is plural.
As is apparent from the above description, the detection gas in the gas distribution box 2 is filled into the detection box 6 through the gas inlet passage 601,
the volume ratio of the air distribution box 2 to the detection box 6 is greater than 20:1.
The detection gas is combustible gas, and the specific concentration is the explosion lower limit value corresponding to the detection gas.
The combustible gas is methane or carbon monoxide.
Because the device for checking the performance of the gas sensor is provided with the gas distribution box 2 communicated with the detection box 6, the volume of the gas distribution box 2 is larger than that of the detection box 6, and the gas sensor 4 to be detected is arranged in the detection box 6. In use, a specific concentration of the detection gas is pre-configured in the gas distribution box 2, wherein the preset specific concentration of the detection gas can enable the standard gas sensor 3 to give an alarm, that is, when the detection gas is introduced from the gas distribution box 2 and fills the detection box 6, the gas sensor 4 to be detected arranged in the detection box 6 can give an alarm or does not react. From this, it can be inferred that the gas sensor 4 to be measured that sent out the alarm is a qualified product, and if it does not react, it is a rejected product. Therefore, the device can rapidly and accurately test the performance of the gas sensor with low cost, and improves the production efficiency.
In some embodiments, the gas distribution channel 21 is arranged on the gas distribution box 2, so that when the volume of the gas distribution box 2 is known, the amount of the required detection gas can be obtained unambiguously when the detection gas with a specific concentration is configured, and the required amount of the detection gas enters the gas distribution box 2 from the gas distribution channel 21 to complete the configuration. Further, a valve is provided in the air distribution channel 21, so that the air distribution channel 21 can be opened and closed.
In some embodiments, the gas distribution box 2 is provided with a detection device 7, wherein the detection device 7 is used for detecting the concentration of the gas in the gas distribution box 2. Specifically, in this embodiment, the standard gas sensor 3 is disposed in the detecting device 7 to detect the gas concentration, when in use, a calculation link can be omitted, a corresponding concentration value can be determined according to the type of the selected gas, and the gas can be inflated, and when the concentration value reaches a preset concentration value, the valve is closed to stop ventilation. I.e. for detection use can be started. In addition, the detecting device 7 may be other gas concentration detectors or the like, and may be used for an instrument for accurately measuring the gas concentration.
In some embodiments, the gas distribution box 2 is in communication with the detection box 6 via a gas inlet channel 601 and a gas outlet channel 602, and in use, a particular concentration of detection gas enters the detection box 6 via the gas inlet channel 601. Preferably, if the density of the detection gas is higher than that of air according to the difference of the types of the detection gases and the density of the air, the air inlet channel 601 is lower than the air outlet channel 602, so that the detection gas can discharge the initial gas in the detection box 6 conveniently, the detection box 6 is filled with the detection gas, and the gas sensor 4 to be detected is in a preset detection gas environment, thereby ensuring the detection accuracy.
Further, air valves are arranged on the air inlet channel 601 and/or the air outlet channel 602, and preferably, the air valves are arranged on the air inlet channel 601 and the air outlet channel 602, the air valves are opened during detection, so that detection gas is led into the detection box 6 from the gas distribution box 2, and before the detection box 6 is connected or taken out, the air valves of the air inlet channel 601 and the air outlet channel 602 are closed, so that detection gas leakage is prevented, and the safety and reliability of detection are improved. Further, an air pump (8) is arranged between the air distribution box 2 and the detection box 6, and preferably, the air pump (8) is arranged on the air inlet channel 601, so that detection gas in the air distribution box 2 is pumped into the detection box 6 through the air inlet channel 601, and the detection efficiency is improved. Further, depending on the kind of the detection gas and the sizes of the detection box 6 and the gas distribution box 2,
the number of the detecting boxes 6 can be multiple, the detecting boxes 6 can detect simultaneously, and specifically, the detecting boxes 6 can be connected with the detecting boxes 6 in a parallel or serial mode, so that the detecting efficiency is further improved, and the detecting result is not affected. Of course, a plurality of sensors to be detected may be provided in one detection box 6 to perform detection at the same time.
In some embodiments, the volume of the gas distribution box 2 is greater than the volume of the detection box 6, and in particular, the volume ratio of the gas distribution box 2 to the detection box 6 is greater than 20:1.
In some embodiments, the detection gas is a combustible gas, wherein the specific concentration is a lower explosion limit of the combustible gas. The lower explosion limit refers to the concentration value of gas alarm, and the low content of combustible gas capable of causing explosion is called as the lower explosion limit, and the unit is: % LEL, low Explosion-Level. Further, the combustible gas may be carbon monoxide or methane, wherein the lower explosion limit of carbon monoxide is 12.5% and the lower explosion limit of methane is 5%. In the specific case, carbon monoxide is introduced from the gas distribution box 2, and when the concentration of the carbon monoxide in the gas distribution box 2 measured by the detector reaches 1.25%, the carbon monoxide reaches 100% LEL. And setting different explosion lower limit values according to different combustible gases so as to test the sensor to be tested.
The foregoing is only illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, and all equivalent changes made by the description of the utility model and the accompanying drawings, or direct or indirect application in the relevant art, are intended to be included within the scope of the utility model.
Claims (10)
1. An apparatus for testing the performance of a gas sensor, comprising:
the gas distribution device comprises a gas distribution box (2), a detection box (6) communicated with the gas distribution box (2) and a gas sensor (4) to be detected, wherein the gas sensor is arranged in the detection box (6);
the volume of the air distribution box (2) is larger than that of the detection box (6);
the gas distribution box (2) is internally provided with detection gas with specific concentration, and the detection gas with specific concentration is introduced from the gas distribution box (2) and fills the detection box (6) so as to enable the gas sensor (4) to be detected to give an alarm.
2. The device for checking the performance of a gas sensor according to claim 1, characterized in that the gas distribution box (2) is provided with a gas distribution channel (21), and the detection gas enters the gas distribution box (2) from the gas distribution channel (21) to configure the detection gas with the specific concentration.
3. The device for checking the performance of a gas sensor according to claim 2, further comprising detection means (7), said gas distribution box (2) being in communication with the detection means (7) for detecting the concentration of the detected gas in the gas distribution box (2).
4. The device for checking the performance of a gas sensor according to claim 1, wherein the gas distribution box (2) is communicated with the detection box (6) through a gas inlet channel (601) and a gas outlet channel (602), the detection gas with specific concentration enters the detection box (6) through the gas inlet channel (601), and initial gas in the detection box (6) is extruded to be discharged through the gas outlet channel (602) and enters the gas distribution box (2).
5. The device for checking the performance of a gas sensor according to claim 4, wherein gas valves are provided on the gas inlet channel (601) and/or the gas outlet channel (602).
6. The device for checking the performance of a gas sensor according to claim 4, wherein an air pump (8) is further provided between the gas distribution box (2) and the detection box (6) to pump the detection gas of a specific concentration in the gas distribution box (2) into the detection box (6) through an air inlet channel (601).
7. The device for checking the performance of a gas sensor according to claim 6, characterized in that the number of detection boxes (6) is a plurality.
8. The apparatus for testing the performance of a gas sensor according to claim 1, wherein the detection gas is a combustible gas, and the specific concentration is an explosion lower limit value corresponding to the detection gas.
9. The apparatus for testing the performance of a gas sensor of claim 8, wherein the combustible gas is methane or carbon monoxide.
10. The device for checking the performance of a gas sensor according to claim 1, characterized in that the volume ratio of the distribution box (2) to the detection box (6) is greater than 20:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321388408.1U CN220552828U (en) | 2023-06-01 | 2023-06-01 | Device for checking performance of gas sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321388408.1U CN220552828U (en) | 2023-06-01 | 2023-06-01 | Device for checking performance of gas sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220552828U true CN220552828U (en) | 2024-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321388408.1U Active CN220552828U (en) | 2023-06-01 | 2023-06-01 | Device for checking performance of gas sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220552828U (en) |
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2023
- 2023-06-01 CN CN202321388408.1U patent/CN220552828U/en active Active
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