Air sampling system
A technology of air sampling and sampling tubes, applied in sampling, sampling devices, measuring devices, etc., can solve the problems of reduced sampling accuracy, pollutant changes, and reduced fluidity, so as to improve accuracy, ensure fluidity, and reduce impact Effect
Inactive Publication Date: 2019-08-06
杭州统标检测科技有限公司
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Problems solved by technology
This kind of sampling tube with a longer design allows the sampling nozzle to extend above the fire source with higher temperature, collects exhaust gas through the sampling nozzle, and then transports it to the detection body for detection through the sampling tube; however, when the ambient temperature is low, dioxins It will be solid and its fluidity will be reduced. When the temperature inside the sampling tube cannot maintain a good state, and the sampling tube is long, when the temperature, uniformity, and temperature difference change, it is easy to affect the pollutants in the exhaust gas. Changes, resulting in Reduced fluidity and sticking in the sampling tube, resulting in greatly reduced sampling accuracy
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[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0029] An air sampling system, comprising a sampling nozzle 1, a sampling tube 2, and a detection body 3. One end of the sampling tube 2 is connected to the detection body 3, and the sampling nozzle 1 is connected to the other end of the sampling tube 2. When detecting combustion exhaust gas pollutants, the sampling The nozzle 1 and the sampling pipe 2 extend above the combustion object, and the air pump inside the detection body 3 is turned on, so that the combustion exhaust gas is sucked through the sampling nozzle 1, and then transported to the detection body 3 through the sampling pipe 2, and the exhaust gas inside the exhaust gas is detected by the internal exhaust gas detection equipment. The content of pollutants is detected, so that the detection body 3 is kept away from the high-temperature area, avoiding heat damage to the equipment, and improving th...
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The invention discloses an air sampling system, belonging to the technical field of air detection. The air sampling system has the advantages of improving the precision of air sampling. The air sampling system is characterized by comprising a sampling nozzle, a sampling tube and a detecting body, wherein one end of the sampling tube is connected with the detecting body, the sampling nozzle is connected to the other end of the sampling tube, the sampling tube comprises a glass inner tube, a thermal insulation outer tube and an infrared heating lamp tube, one end of the glass inner tube is communicated with the interior of the sampling nozzle, the other end of the glass inner tube is communicated with the interior of the detecting body, the glass inner tube spirally surrounds the infrared heating lamp tube, the inner wall of the thermal insulation outer tube is provided with a reflective layer, and a reflective gap is formed between the thermal insulation outer tube and the glass inner tube.
Description
technical field [0001] The invention relates to the technical field of air detection, in particular to an air sampling system. Background technique [0002] Dioxins generally refer to a group of polychlorinated substituted planar aromatic hydrocarbons with similar structures and physical and chemical properties, belonging to chlorinated oxygen-containing tricyclic aromatic hydrocarbons, including 75 polychlorinated dibenzo-one-to-one dioxins and 135 Polychlorinated dibenzofurans; dioxins are extremely toxic and carcinogenic, and these substances are by-products of combustion and various industrial processes. [0003] At present, the main sources of dioxins in the environment are the evaporation caused by the use of chlorophenols for wood preservation and prevention of schistosomes, the discharge of incineration industries, the use of defoliants, the preparation of pesticides, the bleaching of paper, and the emission of automobile exhaust. . [0004] The Chinese patent with...
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IPC IPC(8): G01N1/22
CPCG01N1/2247
Inventor 俞帅葛悦李昕
Owner 杭州统标检测科技有限公司