A step-by-step large-flow aerosol sampling device

A sampling device, aerosol technology, applied in sampling devices, measuring devices, sampling and other directions, can solve the problems of inability to reach the lower limit of detector measurement, limited detector size, small sampling flow, etc., and achieves simple structure, convenient operation and operation. small space effect

Active Publication Date: 2017-12-05
NO 719 RES INST CHINA SHIPBUILDING IND
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Problems solved by technology

Although this method can carry out real-time continuous monitoring, due to the limited size of the detector, the area of ​​filter paper is often small when sampling in each step, and the sampling flow rate under the same sampling time is too small (the sampling flow rate should reach several hundred per hour in the state of nuclear accident. cubic meters), unable to reach the lower limit of the detector

Method used

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  • A step-by-step large-flow aerosol sampling device
  • A step-by-step large-flow aerosol sampling device
  • A step-by-step large-flow aerosol sampling device

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Embodiment Construction

[0023] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings and embodiments.

[0024] Such as figure 1 , 2 As shown, this embodiment provides a step-by-step large-flow aerosol sampling device, which includes an aerosol filter paper tube 22, a paper feeding mechanism, a sampling mechanism, and a sample preparation mechanism. The paper feeding mechanism is composed of a filter paper tray 9, a filter paper tray rotating shaft 14, a flap spring 10, a toggle flap 11, a shift fork 12, and a paper feeding motor 13. The sampling mechanism is composed of a sampling air inlet 6, an air inlet Gasket 21, sampling screw guide rail mechanism 7, sampling motor 8, sampling chamber 16, holder 20 form, described sample preparation mechanism is made up of piston rod 17, sample preparation screw rod guide rail mechanism 18, sample preparation motor 19.

[0025] The filter paper disk rotating shaft 14 and th...

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Abstract

The invention relates to the technical field of radioactive aerosol monitoring and provides a marching type high flow aerosol sampling device. The device comprises an aerosol filter paper roller, a paper advancing mechanism, a sampling mechanism and a sample preparation mechanism, the aerosol filter paper roller is formed by folding a single piece of filter paper into a polygonal-star roller shape and provided with an upper cover and a lower cover, and the upper cover and the lower cover can be buckled into a whole through conical teeth. The device is large in filtering area, high in sampling flow, low in detection lower limit and small in operation space, meanwhile, the automatic paper advancing function is achieved, sampling can be conducted continuously, and monitoring can be conducted in real time.

Description

technical field [0001] The invention relates to the technical field of radioactive aerosol monitoring, in particular to a step-by-step large-flow aerosol sampling device. Background technique [0002] A nuclear accident is often accompanied by the escape of radioactive aerosols. Once it spreads over a large area, it will cause internal exposure to surrounding personnel, and its damage ability is much stronger than that of external exposure. Therefore, rapid sampling and timely continuous measurement of large aerosol flows are required to detect gaseous radioactive substances as early as possible, monitor the status of atmospheric radioactive pollution in real time, and take remedial measures in a timely manner, which is conducive to controlling the development of the situation. In addition, in daily environmental monitoring, the concentration of radioactive aerosols is low, and a large flow rate of aerosols is also required to be sampled before measurement to meet the requir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/22
CPCG01N1/2205G01N2001/2223
Inventor 蔺常勇郭智荣陈祥磊何莉徐卫峰左亮周王益元程翀
Owner NO 719 RES INST CHINA SHIPBUILDING IND
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