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A portable atmospheric particle dilution channel sampler and sampling method

A kind of atmospheric particulate matter and portable technology, which is applied in the direction of sampling, instruments, scientific instruments, etc., can solve the problems of high flow rate of secondary pump, difficult to control, and affect sampling accuracy, etc., and achieve the effect of increasing dilution ratio, convenient portability, and improving sampling accuracy

Active Publication Date: 2018-05-18
SHAANXI ZHENGDA ENVIRONMENTAL PROTECTION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] E. The secondary pump of the traditional dilution sampler has a high flow rate, which is difficult to control and seriously affects the sampling accuracy;

Method used

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  • A portable atmospheric particle dilution channel sampler and sampling method

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Embodiment Construction

[0051] Such as figure 1 As shown, the portable atmospheric particle dilution channel sampler of the present invention includes a dilution system and a sampling system, and the dilution system includes a primary dilution chamber 5, a secondary dilution chamber 7 and a dwelling chamber 9 connected in sequence, and the primary dilution The outside of the bin 5 is wrapped with heat-insulating material, and the particle inlet of the first-stage dilution bin 5 is connected with a sampling probe 1 for sampling into the source 14 through the sampling tube 2, and the first-stage dilution bin 5 is provided with a first-class clean air filter. Inlet 4, the first-level clean air inlet 4 is connected with a first-level clean air inlet pipe 16, the clean air inlet end of the first-level clean air inlet pipe 16 is connected with an air heater 28, and the first-level clean air The introduction pipe 16 is provided with a first-level clean air flow control valve 17; the outside of the second-le...

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Abstract

The invention discloses a portable atmospheric particulate dilution channel sampler. The sampler comprises a diluting system and a sampling system, wherein the diluting system comprises a primary diluting bin, a secondary diluting bin and a remaining room which are connected in sequence, a particulate inlet of the primary diluting bin is connected with a sampling probe by a sampling tube, the primary diluting bin is provided with a primary clean air guide inlet, the secondary diluting bin is provided with a secondary clean air guide inlet and a secondary bypass outlet, and the remaining room is provided with a sampling hole and a condensate collecting hole; the sampling system comprises a plurality of sampling branch tubes connected with the sampling hole and a sampling header connected with all the sampling branch tubes, each sampling branch tube is provided with a sampling cutter, a sampling flow control valve and a sampling flow meter, and the sampling header is provided with a sampling pump. The invention also discloses a portable atmospheric particulate dilution channel sampling method. According to the invention, the dilution ratio of atmospheric particulates and the sampling precision are improved, and the practicability is high.

Description

technical field [0001] The invention belongs to the technical field of environmental monitoring, and in particular relates to a portable atmospheric particle dilution channel sampler and a sampling method. Background technique [0002] The advantages and disadvantages of traditional atmospheric particle samplers used in environmental monitoring are mainly manifested in the following aspects: [0003] (1) Due to the short research period of the domestic self-developed gas sampler, the test gas composition is single, and the accuracy and stability are not very high; the foreign gas sampler used for environmental atmospheric monitoring, whether it is a single gas or multiple gases Composition, the system has the advantages of variable gas sampling parameters, high sampling accuracy, stability and reliability. [0004] Both the domestic atmospheric gas sampling devices discussed above and foreign atmospheric gas samplers have a large system size, which is not conducive to movem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/22
CPCG01N1/2258G01N1/2273G01N2001/2261G01N2001/2264G01N2001/2282
Inventor 杜金玲张晓博周胜武伟宋伟赵晓鹏
Owner SHAANXI ZHENGDA ENVIRONMENTAL PROTECTION TECH
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