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Method for in-situ detection of aerosol particle concentration and detector thereof

A particle concentration, on-site detection technology, applied in the direction of measuring devices, scientific instruments, particle suspension analysis, etc.

Inactive Publication Date: 2006-09-27
天津青碧科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to propose a new method and detector for on-site detection of aerosol particle concentration suitable for most aerosol particle concentrations, to solve the problem of developing a method for rapid on-site detection or long-term monitoring of aerosol particle concentration and related problems. equipment; and solve the problem of obtaining the particle size distribution of aerosol particles conveniently by this technology

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  • Method for in-situ detection of aerosol particle concentration and detector thereof
  • Method for in-situ detection of aerosol particle concentration and detector thereof
  • Method for in-situ detection of aerosol particle concentration and detector thereof

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Embodiment Construction

[0047] The main steps of this detection or monitoring are as follows:

[0048] (1) Place the tubular probe in the airflow containing aerosol particles. There are a positive high voltage electrode and a negative high voltage electrode wire in the tubular probe, and at least one corona field is formed between the two electrodes.

[0049] (2) The air flow containing aerosol particles passes through the corona field, so that at least part of the aerosol particles to be measured in the air flow are negatively charged in the corona field.

[0050] (3) In the corona field, negatively charged aerosol particles are deposited on the positive high voltage electrode.

[0051] (4) Detect the change data of current or voltage appearing in the circuit connected with the positive high voltage electrode.

[0052] (5) Compare and calibrate the detection data with standard or conventional detection methods, and obtain the relationship curve or empirical formula between the change of current or volta...

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Abstract

This invention relates to a method for in-situ detection of aerosol particle concentration and detector thereof. <0}Wherein, putting the pipe-shaped probe with a positive / negative high voltage electrode metal wire for forming at least one corona field into the airflow with aerosol particle; forcing the gas flow the firmer field to let partial aerosol particles bring negative charge; in the corona field, depositing the charged particles on the positive electrode; detecting the current or voltage variation of the circuit connected with the positive electrode; comparing the detection data with standard or conventional result for scaling and the corresponding relation curve or empirical formula; finally, getting the particle concentration. This invention has wide application.

Description

Technical field [0001] The invention relates to a detection method of aerosol particles and a detection device thereof. Background technique [0002] Aerosol particles refer to solid or liquid particles suspended in the atmosphere or air with a diameter ranging from less than 1 micrometer to hundreds of micrometers. Generally it is natural (such as volcanic eruptions and sandstorms) or the result of human activities. The composition of the latter can be roughly divided into three categories: sulfate aerosols, biomass combustion aerosols and black smoke from the burning of fossil fuels. Aerosols have a great impact on human life. Most air pollution is related to aerosols. Whether it is the tons of smoke and dust produced by thermal power plants, the smoke emitted by tens of thousands of motor vehicles, and the oil fume aerosol produced by restaurant cooking, they will cause damage to people's breathing and circulatory systems. Taking the latter as an example, when the cooking temp...

Claims

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Application Information

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IPC IPC(8): G01N15/06G01N27/06
Inventor 何宗彦
Owner 天津青碧科技有限公司
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