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Roll type paper feeding and sampling apparatus for radioactive aerosol continuous monitor

A sampling device and aerosol technology, applied in measuring devices, sampling devices, scientific instruments, etc., can solve the problems of easy breaking of filter paper and small frictional resistance

Inactive Publication Date: 2013-05-08
中国人民解放军海军核化安全研究所
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a roller-type paper-feeding sampling device with less frictional resistance to solve the practical problem that the filter paper in the marine radioactive aerosol monitoring system is easily broken after being wet or wet.

Method used

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  • Roll type paper feeding and sampling apparatus for radioactive aerosol continuous monitor
  • Roll type paper feeding and sampling apparatus for radioactive aerosol continuous monitor

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Embodiment Construction

[0012] Such as figure 1 As shown, when the motor 9 drives the paper receiving wheel 14 to rotate and start to collect paper, the paper feeding wheel 13 also starts to rotate, and the filter paper starts from the filter belt chamber 5, passes between the driven wheel 15 and the shrapnel, and passes along the conveying steel belt 4 and The filter paper tray 12 bypasses the driving wheel 16 and finally enters the paper delivery bin 10 .

[0013] During measurement, the aspirating pump 7 is turned on, the radioactive aerosol enters from the sampling box 17, and enters the aerosol sampling unit (i.e. filter paper tray 12, detector 3, filter paper 4) along the sampling pipeline 2, and then passes through the gas flowmeter 6 , and finally flow out through the air outlet 11. Because the suction pump 7 can form a negative pressure in the pipeline when air is pumped, the filter paper 4 is tightly attached to the filter paper tray 12 . Due to the use of the roller tray mechanism, such ...

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Abstract

The invention relates to continuous monitoring of radioactive aerosols in the field of nuclear radiation detections, and specifically relates to a paper feeding and sampling apparatus for the radioactive aerosol monitor, which is capable of being used in marine environment. A filter paper tray of the paper feeding and sampling apparatus is composed of a roller pallet (19) and rollers (18). When the filter paper moves at a constant speed on the roll type filter paper tray at a certain speed, the filter paper is mainly influenced by two frictional forces, one is a rolling friction force between the filter paper and the rollers (18), the other is a sliding friction force between the rollers (18) the filter paper and the roller pallet (19), and a resultant force of the two frictional forces is far smaller than tensile strength of the filer paper after immersion, thereby guaranteeing that the filter paper is not broken even when the filter paper is affected with damp and even is wet in an extreme condition.

Description

technical field [0001] The invention relates to the continuous monitoring of radioactive aerosol in the field of nuclear radiation detection, in particular to a paper-feeding sampling device of a radioactive aerosol monitor applicable to the marine environment. Background technique [0002] The purpose of radioactive aerosol monitoring is to obtain information on the concentration of aerosols in the air in a timely manner, to provide a scientific basis for the purification and protection of aerosols, and to protect environmental safety and personnel health. The radioactive aerosol monitoring system used at sea must not only meet the requirements for onshore radioactive aerosol monitoring, but also meet the special requirements during sea voyages, such as high humidity, high salt spray, waterproof, etc. [0003] After the existing land-based radioactive aerosol monitoring system is installed on a ship, it can generally only be turned on for measurement when the weather and se...

Claims

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Application Information

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IPC IPC(8): G01N15/06G01N1/10
Inventor 张燕刘明健李洋崔晓辉段再煜谷铁男罗明邢丽丽刘翠红闫学昆成晟
Owner 中国人民解放军海军核化安全研究所
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