Beta-ray soot concentration direct-reading monitor and method for determining effective sample

Abstract

The invention is the method about direct reading monitor appearance of dust concentration of Beta radial, it includes fume containment cell and fume quality detection cell, the fume containment cell includes fume sample collection gun, filter paper and mechanical control auto form feed structure, thereinto ,the fume sample collection gun includes gathering tube,pitot tube and sheath tube; thereinto, fixing a up bore body on the end of collection tube of the fume sample collection gun, fixing a down bore body with up bore body corresponding, the filter paper passes in the gap of thereabout bore body, fixing the filter paper torr at the place of entrance of down bore body, fixing the flue gas exit at the bottom of bore body, thereinto, the sampling acreage of soot from the up bore body is twice with actual testing acreage of filter paper. Getting to improve the measuring accuracy for the flue gas, avoiding disturb from hydrosphere for testing soot.

Description

technical field [0001] The invention relates to an environmental protection detection device, in particular to a β-ray soot concentration direct-reading monitor capable of improving weighing accuracy and a method for determining whether a sampling sample is valid. Background technique [0002] Since the environmental pollution caused by pollution sources such as industrial boilers, power plant boilers and industrial kilns is quite serious, all countries in the world have carried out in-depth research and control on this, which requires monitoring the concentration of particulate smoke emitted by them. At present, the commonly used monitoring methods include opacity method, light transmission method, laser backscattering method, charge method, β-ray absorption method (in-flue test), etc. [0003] Among them, the filter weighing method is the most widely used at present. Its basic principle is that a certain volume of dusty flue gas passes through a filter cartridge of known w...

AI Technical Summary

Problems solved by technology

[0007] The humidity in the smoke is high, which affects the detection of the quality of the smoke;

[0008] The detection of dust with large dispersion and large particles is inaccurate, and the β-ray source (carbon-14 area source) cannot penetrate at all, and is completely absorbed by the dust

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