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Condensation particle counter

A particle counter and butanol technology, applied in scientific instruments, individual particle analysis, particle and sedimentation analysis, etc., can solve the problems of complex mechanical structure and high price, and achieve the effect of low cost, fast feedback speed and simple structure

Pending Publication Date: 2020-05-08
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] A condensate particle counter proposed by the invention can solve the technical problem that the existing commercial CPC needs to use a special liquid level meter with complex mechanical structure and high price

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Embodiment Construction

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments.

[0021] Such as figure 1 As shown, the specific structure of the condensation particle counter described in this embodiment is as follows:

[0022] Based on the CPC saturation chamber 1, the inner wall of the CPC saturation chamber 1 is provided with felt 2 for absorbing butanol liquid, which is beneficial to evaporation and diffusion;

[0023] It also includes a butanol storage tank 3, which is arranged on the bottom wall of the CPC saturation chamber 1 and is close to the air inlet end;

[0024] It also includes a thermistor 4 for detecting the l...

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Abstract

A condensation particle counter can solve the technical problems that in an existing commercial CPC, a special liquid level instrument needs to be adopted, the mechanical structure is complex and theprice is high. The condensation particle counter is based on a saturation cavity, two ends of the saturation cavity comprise a gas inlet and a gas outlet respectively, and the condensation particle counter further comprises a butanol storage tank; the butanol storage tank is arranged on the bottom wall of the saturation cavity at a position close to the gas inlet; the condensation particle counterfurther comprises a thermistor and a control system, the thermistor is placed in the butanol storage tank, and the control system is arranged outside the saturation cavity; the butanol storage tank is arranged outside the saturation cavity; a butanol filling nozzle is used for filling butanol liquid, and the butanol filling nozzle is communicated with the butanol storage tank by arranging a liquid valve; the butanol filling nozzle is arranged on the top wall of the saturation cavity and is communicated with the interior of the saturation cavity; and the liquid valve is connected with the control system which controls the liquid valve to be opened and closed. By arranging the thermistor and the butanol storage tank, the detection and control functions of the liquid level can be completed;and the condensation particle counter has the advantages of simple structure, low cost and stable performance.

Description

technical field [0001] The invention relates to the technical field of condensation particle counters, in particular to a condensation particle counter. Background technique [0002] Condensation Particle Counters (CPC) is an instrument that measures the concentration of particles in the air in real time. Particles in the sampled air entering the CPC cannot produce enough scattered light to be detected by the detector due to their small size, so condensation is needed to make the size of the detected particles larger and can be detected by the detector. Condensation particle counter working fluid is mainly divided into alcohol-based and water-based based on the properties of the particles to be measured, and n-butanol is the most used working fluid in the history of commercial CPC, such as TSI's 377 series CPC and AIRMODUS' mixed type CPC. Butanol is a large molecule with low vapor diffusivity, so it stays in the vapor stream to provide reliable, repeatable CPC condensatio...

Claims

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Application Information

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IPC IPC(8): G01N15/12G01F23/24
CPCG01N15/12G01F23/24G01N2015/1486
Inventor 赵欣桂华侨王文誉
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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