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Nitrogen oxide gas detection system

A gas detection system, nitrogen oxide technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of difficult to achieve sample gas flow, large sample gas flow, insufficient measurement accuracy and sensitivity, etc., to achieve Nitrogen oxide gas concentration detection, the flow rate is stable, and the effect of low flow rate is achieved

Pending Publication Date: 2021-10-15
北京是卓科技有限公司 +1
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Problems solved by technology

[0006] 1) The sample gas flow rate required in the detection process is large (for example, more than 600ml / min is required), so it is not applicable in some occasions, for example, it is difficult to achieve the required sample gas when detecting the gas exhaled by the human body flow
[0007] 2) The detectors in the prior art usually use analog detectors, so the accuracy and sensitivity of the measurement are insufficient

Method used

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Embodiment Construction

[0049] In order to make the technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0050] figure 1 It is a schematic structural diagram of the nitrogen oxide gas detection system in the embodiment of the present invention. like figure 1 As shown, the nitrogen oxide gas detection system in the embodiment of the present invention includes: an air intake device 101, an ozone generator 102, an ozone flow measurement device 103, an ozone flow control device 104, a sample gas intake device 105, a sample gas flow rate Measuring device 106, sample gas flow control device 107, controller 108, reaction chamber 109, filter 110, detector 111 and suction pump 112;

[0051]The gas path output end of the air intake device 101 is connected with the gas path input end of the ozone generator 102; the gas path output end of the ozone generator 10...

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Abstract

The invention provides a nitrogen oxide gas detection system. The nitrogen oxide gas detection system comprises an air inlet device, an ozone generator, an ozone flow measuring device, an ozone flow control device, a sample gas inlet device, a sample gas flow measuring device, a sample gas flow control device, a controller, a reaction chamber, an optical filter, a detector, a sucking pump washing device, a first valve and a sucking bypass device. According to the invention, low-flow nitrogen oxide gas concentration detection can be realized.

Description

technical field [0001] The present application relates to the field of atmospheric monitoring and medical technology, and in particular, to a nitrogen oxide gas detection system. Background technique [0002] Nitrogen oxide gas (NOx) mainly refers to nitric oxide (NO) and nitrogen dioxide (NO 2 ), when they are present in the atmosphere in such a way that they have harmful effects on people, animals, plants, and other substances, the corresponding pollution is formed. NOx can photochemically react with other pollutants in the atmosphere to form photochemical smog pollution. Moreover, NOx can also enter the deep part of human lungs through breathing, causing bronchitis or emphysema. [0003] With the gradual increase of industrial pollution and the frequent occurrence of haze weather, air pollution has seriously affected human health. Therefore, the detection of air quality has become particularly important, and the detection of NOx is a very important detection in the det...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00
CPCG01N33/0011G01N33/0037
Inventor 张景秀侯珑斐张志伟韩宇
Owner 北京是卓科技有限公司
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