CN112824896A - Harmful gas concentration detection device and detection method - Google Patents
Harmful gas concentration detection device and detection method Download PDFInfo
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- CN112824896A CN112824896A CN201911139519.7A CN201911139519A CN112824896A CN 112824896 A CN112824896 A CN 112824896A CN 201911139519 A CN201911139519 A CN 201911139519A CN 112824896 A CN112824896 A CN 112824896A
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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
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
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Abstract
The invention discloses a harmful gas concentration detection device and a detection method, comprising a detection trolley and a control device; the detection trolley consists of a base, a multi-section telescopic rod and an electric push rod, wherein a stepping motor is fixedly installed at the telescopic end of the multi-section telescopic rod, and the output end of the stepping motor is fixedly connected with a first wireless signal transmission device; above-mentioned gas concentration detection device carries out concentration detection to gas through gas concentration detection sensor and vacuum detection cavity, can obtain real-time accurate testing result, take a sample to the gas in the sealed cavity through the sampling element, and utilize the analysis of detection and analysis appearance to obtain more accurate testing result, and through two kinds of concentration detection results of detection and analysis appearance contrast, judge whether the sensor breaks down, thereby avoided leading to obtaining wrong concentration information because of the sensor trouble, make the testing result more accurate.
Description
Technical Field
The invention relates to the technical field of gas concentration detection, in particular to a gas concentration detection device and a detection method thereof.
Background
With the rapid development of social economy and the increasing improvement of living standard of people, people pay more and more attention to industrial safety and living room environment, so that the detection of the gas concentration in the environment of people is more and more important. In chemical engineering plants in particular, a large amount of gas is often generated in production and manufacturing of some products, and when the gas reaches a certain concentration, certain harm can be brought to the health of workers, even the safety of the lives of the workers can be threatened, so that irreparable loss is caused, and therefore, the detection of the gas concentration is an important measure for preventing loss and protecting the personal safety.
Most of the existing gas detectors are portable and handheld, the detection device needs a user to carry out handheld measurement, and the measurement mode easily causes potential safety hazards and is not beneficial to the body health of the user in a closed environment containing harmful gases; meanwhile, the gas concentrations at different positions in the sealed environment are different, and the existing detection device is difficult to detect all the positions in the sealed environment, so that the detection accuracy is influenced.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the harmful gas concentration detection device which is simple in structure, convenient to operate and accurate and reliable in detection result.
The purpose of the invention is realized by the following technical scheme:
an apparatus for detecting the concentration of a multi-component gas in air, comprising: a gas chamber, the gas concentration detection device further comprising:
the treatment unit comprises a buffer tank and a treatment pool which are arranged in parallel, and the treatment pool is used for filtering components to be measured in the air; the processing unit is connected with the gas chamber and is positioned at the upstream of the gas chamber; a sensor is arranged in the gas chamber;
a switching valve connecting an air inlet with the processing unit, through which air selectively enters the buffer tank or the processing bath.
According to the gas concentration detection device, preferably, at least two treatment cells are arranged in parallel.
According to the gas concentration detection apparatus described above, preferably, after the air passes through the treatment tank, humidity and pressure are not affected.
According to the gas concentration detection device, an adsorber or a catalytic filter or an electrochemical removal device is optionally arranged in the processing tank.
According to the gas concentration detection device, optionally, the treatment tank comprises an O3 filter tank, an NO2 filter tank and a CO filter tank.
A gas concentration detection method based on a gas concentration detection device comprises the following steps:
acquiring gas concentration data sent by a gas concentration detection sensor;
comparing the acquired multiple groups of gas concentration data, and sampling gas by a sampling element when the difference of the multiple groups of gas concentration data is large;
acquiring gas concentration data obtained by analyzing a sample gas in a sampling element;
when the difference between the data obtained by the sensor and the data obtained by sampling analysis is larger than a set range, sending fault information of the gas concentration detection sensor;
and when the difference between the data obtained by the sensor and the data obtained by sampling analysis is smaller than a set range, sending a gas concentration change signal.
According to the gas concentration detection method, the gas concentration in the sealed cavity storing the gas to be detected is detected by the gas concentration detection sensor, a real-time detection result can be obtained, when the difference of a plurality of groups of gas concentration data is large, the gas in the sealed cavity is subjected to concentration detection through the sampling element, the concentration result obtained by the gas concentration detection sensor and the sampling element is compared for detection, and whether the gas concentration detection sensor breaks down or changes of the gas concentration itself is judged, so that the situation that wrong concentration information is obtained due to the failure of the gas concentration detection sensor is avoided, and the detection result is more accurate.
Drawings
Fig. 1 is a block diagram of a detection trolley in a harmful gas concentration detection device.
Fig. 2 is a block diagram of a control device in the harmful gas concentration detection device.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
An apparatus for detecting the concentration of a multi-component gas in air, comprising: a gas chamber, the gas concentration detection device further comprising:
the treatment unit comprises a buffer tank and a treatment pool which are arranged in parallel, and the treatment pool is used for filtering components to be measured in the air; the processing unit is connected with the gas chamber and is positioned at the upstream of the gas chamber; a sensor is arranged in the gas chamber;
a switching valve connecting an air inlet with the processing unit, through which air selectively enters the buffer tank or the processing bath.
According to the gas concentration detection device, preferably, at least two treatment cells are arranged in parallel.
According to the gas concentration detection apparatus described above, preferably, after the air passes through the treatment tank, humidity and pressure are not affected.
According to the gas concentration detection device, an adsorber or a catalytic filter or an electrochemical removal device is optionally arranged in the processing tank.
According to the gas concentration detection device, optionally, the treatment tank comprises an O3 filter tank, an NO2 filter tank and a CO filter tank.
A gas concentration detection method based on a gas concentration detection device comprises the following steps:
acquiring gas concentration data sent by a gas concentration detection sensor;
comparing the acquired multiple groups of gas concentration data, and sampling gas by a sampling element when the difference of the multiple groups of gas concentration data is large;
acquiring gas concentration data obtained by analyzing a sample gas in a sampling element;
when the difference between the data obtained by the sensor and the data obtained by sampling analysis is larger than a set range, sending fault information of the gas concentration detection sensor;
and when the difference between the data obtained by the sensor and the data obtained by sampling analysis is smaller than a set range, sending a gas concentration change signal.
According to the gas concentration detection method, the gas concentration in the sealed cavity storing the gas to be detected is detected by the gas concentration detection sensor, a real-time detection result can be obtained, when the difference of a plurality of groups of gas concentration data is large, the gas in the sealed cavity is subjected to concentration detection through the sampling element, the concentration result obtained by the gas concentration detection sensor and the sampling element is compared for detection, and whether the gas concentration detection sensor breaks down or changes of the gas concentration itself is judged, so that the situation that wrong concentration information is obtained due to the failure of the gas concentration detection sensor is avoided, and the detection result is more accurate.
Claims (4)
1. A harmful gas concentration detection apparatus comprising: a gas chamber characterized by: the gas concentration detection apparatus further includes: the treatment unit comprises a buffer tank and a treatment pool which are arranged in parallel, and the treatment pool is used for filtering components to be measured in the air; the processing unit is connected with the gas chamber and is positioned at the upstream of the gas chamber; a sensor is arranged in the gas chamber; a switching valve connecting an air inlet with the processing unit, through which air selectively enters the buffer tank or the processing bath.
2. The gas concentration detection apparatus according to claim 1, characterized in that: at least two treatment pools are arranged in parallel.
3. The gas concentration detection apparatus according to claim 2, characterized in that: after the air passes through the treatment tank, the humidity and the pressure are not affected.
4. The harmful gas concentration detection apparatus and method according to claim 1, wherein: the method is characterized by comprising the following steps:
acquiring gas concentration data sent by a gas concentration detection sensor;
comparing the acquired multiple groups of gas concentration data, and sampling gas by a sampling element when the difference of the multiple groups of gas concentration data is large;
acquiring gas concentration data obtained by analyzing a sample gas in a sampling element;
when the difference between the data obtained by the sensor and the data obtained by the sampling analysis is larger than a set range, sending fault information of the gas concentration detection sensor;
and when the difference between the data obtained by the sensor and the data obtained by the sampling analysis is smaller than a set range, sending a gas concentration change signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911139519.7A CN112824896A (en) | 2019-11-20 | 2019-11-20 | Harmful gas concentration detection device and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911139519.7A CN112824896A (en) | 2019-11-20 | 2019-11-20 | Harmful gas concentration detection device and detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112824896A true CN112824896A (en) | 2021-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911139519.7A Pending CN112824896A (en) | 2019-11-20 | 2019-11-20 | Harmful gas concentration detection device and detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112824896A (en) |
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2019
- 2019-11-20 CN CN201911139519.7A patent/CN112824896A/en active Pending
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Application publication date: 20210521 |