Handheld flue gas particulate matter sampling device and method

Abstract

The invention discloses a handheld flue gas particulate matter sampling device and method. The handheld flue gas particulate matter sampling device comprises a cavity and a detection assembly arrangedin the cavity, the detection assembly comprises a protection plate and a smoke guide pipe, the protection plate defines a smoke channel, the smoke guide pipe is connected to the center of the smoke channel, the smoke channel is divided into N sections, the N sections are marked as a first channel, a second channel... an Nth channel, the N sections of smoke channels form a vortex structure, and adsorption holes are formed in the inner walls of the N sections of smoke channels. A plurality of first adsorption holes are formed in the inner wall of the first channel, a plurality of second adsorption holes are formed in the inner wall of the second channel,..., a plurality of Nth adsorption holes are formed in the inner wall of the Nth channel, and the sizes of the first adsorption holes, thesecond adsorption holes and the third adsorption holes are gradually increased in sequence; the protection plate is of a hollow structure, a base layer is arranged in the protection plate, an adsorption layer is arranged on one side of the base layer, and the adsorption layer can adsorb particles in flue gas; a smoke inlet is formed in one end face of the cavity, the smoke inlet is connected witha port of the first channel, smoke sequentially flows through the first channel, the second channel... the Nth channel from the smoke inlet to a smoke guide pipe, the smoke guide pipe is connected with a draught fan, and the draught fan can lead out the smoke in the smoke channel.

Description

technical field [0001] The invention relates to the field of smoke detection, in particular to a handheld smoke particle sampling device and method. Background technique [0002] Smoke is a mixture of gas and smoke and is the main cause of air pollution in residential areas. The composition of the flue gas is very complex. The gas includes water vapor, SO2, N2, O2, CO, CO2, hydrocarbons, and nitrogen oxides. The smoke includes fuel ash, coal particles, oil droplets, and pyrolysis products. Therefore, the pollution of flue gas to the environment is the compound pollution of various poisons. The harmfulness of smoke to the human body is related to the size of the particles. The most harmful to the human body is the floating dust with a diameter of less than 10 microns, especially the 1-2.5 micron floating dust is the most harmful. The harm to the human body depends on the composition of the pollutants on the one hand. , concentration, duration and site of action, on the othe...

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Problems solved by technology

In addition, the smoke still contains strong carcinogens such as benzopyrene.

[0003] In the prior art, the gas to be detected often needs to be tested at a place where the detection equipment is convenient to arrange. Generally speaking, the gas to be tested must first be guided to the detection gas pool by the pipeline, and the indicators to be detected are mainly the gas composition and content. , Spectrometry is a conventional detection method. This method is complicated to detect, and it is impossible to carry out simple sampling detection on small places such as kitchen smoke or smoking rooms through flexible handheld structures. Traditional smoke detection devices have not been equipped with multi-level detection components. , the superimposition test of the corresponding adsorption layer on the primary detection component and the secondary detection component cannot accurately analyze the content and concentration of particulate matter in the flue gas. In addition, it is impossible to conduct a comparative analysis of the primary detection through the secondary or multi-level detection components The detection accuracy of components and the adsorption rate of primary detection components and other index parameters are not very practical

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