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A method for continuous monitoring of artificial α radionuclide aerosol concentration

An alpha-radioactive and aerosol technology, applied in radiation measurement, X/γ/cosmic radiation measurement, measurement devices, etc., can solve the problems of low measurement accuracy and long measurement cycle, so as to reduce adverse effects and improve accuracy The effect of high degree and high application value

Active Publication Date: 2021-08-06
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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  • Abstract
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Problems solved by technology

[0005] The invention purpose of the present invention is: when adopting existing equipment to monitor artificial alpha radionuclides, the measurement cycle of the fixed monitoring device is longer, and the online monitoring device is affected by the energy tailing of natural alpha radionuclides, and the measurement accuracy The problem is not high, providing a continuous monitoring device and measurement method for artificial alpha radionuclide aerosol concentration

Method used

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  • A method for continuous monitoring of artificial α radionuclide aerosol concentration
  • A method for continuous monitoring of artificial α radionuclide aerosol concentration

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Embodiment 1

[0042] The device includes a measuring chamber, an air inlet pipe, an air outlet pipe, a flow meter, a vacuum pump, a solenoid valve, a filter paper belt, a paper belt conveyor, a diversion cone, an α detector, a signal processing and data acquisition card, an embedded control module, a display Control system, pressure sensor, reminder device. Wherein, the measuring chamber is respectively provided with an air inlet and an air outlet, the air inlet pipe is connected with the measuring chamber through the air inlet, the air outlet is connected with the vacuum pump through the air outlet pipe, and the flowmeter is arranged on the air outlet pipe. Among them, the electromagnetic valve is used to realize the opening and closing of the intake pipe, and the paper belt conveying device is used to drive the filter paper belt to move relatively.

[0043] In this embodiment, the solenoid valve is arranged on the inner wall of the intake pipe, and the display and control system is connec...

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Abstract

The invention discloses a continuous monitoring device for the concentration of artificial alpha radionuclide aerosol and a measurement method thereof. The on-line monitoring device is affected by the energy tailing of natural alpha radionuclides, and the measurement accuracy is not high. It includes measurement chamber, air inlet pipe, air outlet pipe, vacuum pump, solenoid valve, filter paper belt, paper belt conveyor, diversion cone, α detector, signal processing and data acquisition card, embedded control module, display and control system, pressure Sensors, reminders. The invention can not only realize real-time measurement, but also realize continuous and accurate measurement. In the real-time monitoring mode, when the monitoring value exceeds the alarm limit, it has an accurate measurement function. It performs high-precision measurement by vacuuming the measurement chamber, which greatly reduces the impact of natural α radionuclides energy tailing on artificial α radionuclides. The impact of the measurement, thereby reducing the adverse effects of false alarms.

Description

technical field [0001] The invention relates to the field of alpha radionuclide monitoring, in particular to an alpha radionuclide aerosol concentration continuous monitoring device and a measuring method thereof. Further, the present invention provides a continuous monitoring device for the concentration of artificial alpha radionuclide aerosol, and a measurement method for alpha radionuclide, which can not only realize real-time online monitoring, but also be used as a fixed monitoring device to achieve high precision continuous monitoring. Background technique [0002] In nuclear industry sites, the concentration of artificial radioactive aerosols in the air reflects the radiation safety status of the working environment. Due to the presence of natural α radionuclide decay daughters such as radon and thorium in the air, it has caused great interference to the monitoring of artificial α radionuclide concentration. [0003] At present, similar monitoring devices at home a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01T1/167G01N33/00G01N15/06G01N1/24G08B21/18G08B19/00
CPCG01N1/2273G01N1/24G01N15/0606G01N33/0004G01N33/0065G01T1/167G08B19/00G08B21/182
Inventor 王雷付军赵伟秦驰肖丽吴柳青
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS