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Dust gas concentration detection apparatus based on integrating sphere

A technology of gas concentration detection and integrating sphere, which is applied in the direction of measuring devices, analysis materials, particle suspension analysis, etc., can solve the problems of increasing detection workload, reducing detection work efficiency, increasing investment costs and detection costs, etc., to achieve increased concentration range effect

Inactive Publication Date: 2018-07-13
CHINA JILIANG UNIV
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Problems solved by technology

In many industrial fields, dust and harmful gases exist at the same time; and the current device can only detect one of the dust gas or harmful gas, if two kinds of detection are required, two different instruments are required; not only increases The detection workload reduces the detection work efficiency, and also increases the investment cost and detection cost

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  • Dust gas concentration detection apparatus based on integrating sphere
  • Dust gas concentration detection apparatus based on integrating sphere
  • Dust gas concentration detection apparatus based on integrating sphere

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Embodiment Construction

[0030] Further description will be given below in conjunction with the embodiments shown in the accompanying drawings.

[0031] 1. Detection principle

[0032] (1) Dust detection principle: When a beam of visible light with known light intensity is directed at the dust gas, part of the light is absorbed by the dust, part of the light is scattered through the dust, and the rest continues to move forward in the original direction. The intensity of the remaining light has a certain proportional relationship with the concentration of dust, and the specific principle is Lambert-Beer's law, that is

[0033] I=I 0 e -kLC (1)

[0034] Where: I is the transmitted light intensity; I 0 is the incident light intensity; L is the optical path; C is the dust concentration to be measured;

[0035] k is the extinction coefficient, which is related to the wavelength of light, the particle size distribution of dust and the refractive index of dust. Usually, the average value of the partic...

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Abstract

The invention relates to a detection apparatus. A purpose of the present invention is to provide a dust gas concentration detection apparatus, which can sequentially detect the dust concentration andthe harmful gas content in gas, and has characteristics of accurate detection data, high detection efficiency and low detection cost. The technical scheme comprises that the dust gas concentration detection apparatus based on an integrating sphere comprises a dust and gas pretreatment unit, an integrating sphere detection unit and a discharge port, the dust and gas pretreatment unit, the integrating sphere detection unit and the discharge port are sequentially communicated through pipelines, a dust and gas reflux unit is connected between the inlet and the outlet of the integrating sphere detection unit through a pipeline having a valve, and the integrating sphere detection unit transmits a detection signal to a data signal analysis processing unit through a data line.

Description

technical field [0001] The invention relates to a detection device, especially a detection device for dust and gas concentration. Background technique [0002] In recent years, with the continuous improvement of the country and the people's requirements for the ecological environment, the air quality, especially the air quality in the industrial field, has received more and more attention. In many industrial fields, dust and harmful gases exist at the same time; and the current device can only detect one of the dust gas or harmful gas, if two kinds of detection are required, two different instruments are required; not only increases The detection workload reduces the detection work efficiency, and also increases the investment cost and detection cost. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the background technology, and provide a dust gas concentration detection device, which can detect th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/06G01N21/01G01N21/33
CPCG01N15/06G01N21/01G01N21/33G01N15/075
Inventor 夏凤毅陈锋罗爱爱
Owner CHINA JILIANG UNIV
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