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Passive aerosol continuous sampling device

A sampling device and aerosol technology, applied in the direction of sampling devices, etc., can solve the problems of inability to meet the requirements of aerosol sampling, unstable gas flow rate, complicated operation, etc., and achieve the effect of low power consumption, low noise and simple operation

Inactive Publication Date: 2015-12-23
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0004] However, the traditional aerosol sampling system is not suitable for carrying on sports tools. Due to its large size, complex operation, unstable gas flow rate and other practical problems, it cannot meet the existing vehicle-mounted and airborne aerosol sampling requirements.

Method used

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Embodiment Construction

[0017] The working principle of the present invention is as follows:

[0018] Aerosol sampling is carried out through the relative movement between moving tools (such as airplanes and cars) and air, and the aerosol is adsorbed on the filter paper by the impact of filter paper and aerosol particles. By setting the adsorption sampling time on the controller, when the sampling time After reaching the set value, the sampled filter paper is rolled up by the paper feeding system, and the blank filter paper is replaced at the same time to realize continuous sampling of the aerosol.

[0019] The present invention can change the sampling rate by adjusting the speed of the moving tool. If the speed of the moving tool cannot meet the requirements, the air pump can be connected to the rear end to assist in increasing the aerosol sampling rate. A filter paper support frame is installed at the rear end of the filter paper, so Even if the air velocity passing through the device is high, the ...

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Abstract

The invention provides a passive aerosol continuous sampling device. The passive aerosol continuous sampling device comprises a gas sampling pipeline fixed to a tool which has relative movement with air, the gas sampling pipeline is provided with a filter paper support frame and a flow meter, the two sides of the gas sampling pipeline are each provided with a paper feed system, filter paper connected with the paper feed systems winds around the filter paper support frame, and the filter paper moves in the radial direction of the gas sampling pipeline under the control of the paper feed systems. According to the passive aerosol continuous sampling device, relative flow of moving tools and the air is utilized to conduct continuous sampling on aerosol, and the passive aerosol continuous sampling device has the advantages of being small in size, convenient to operate, large in flow, low in power consumption, small in noise, stable in flow and free of maintenance.

Description

technical field [0001] The invention relates to the field of aerosol sampling devices, in particular to a passive aerosol continuous sampling device, which is suitable for sampling radioactive aerosols and iodine in the nuclear industry. Background technique [0002] Aerosol is a suspension system of liquid or solid particles in the air. Fog, smoke, dust, etc. are all aerosols caused by natural or man-made reasons. Nuclear technology production accidents, nuclear weapon tests, and nuclear energy leakage accidents may cause long-lived radioactive substances to disperse in the air and form artificial radioactive aerosols. These tiny particles mainly cause internal radiation damage to the human body through inhalation. To ensure that the public For the evaluation of health and accident levels, the usual monitoring method is to use continuous radioactive aerosol monitors to conduct continuous monitoring on site. [0003] Continuous radioactive aerosol monitoring instruments are...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/22
Inventor 汤晓斌曹叶王鹏龚频刘云鹏陈达
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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