Radon measurement dehumidification method

A radon chamber and flowmeter technology, which is applied in measurement devices, radiation measurement, X/γ/cosmic radiation measurement, etc., can solve the problems of inconvenience and cost of radon measuring instruments, improve portability and measurement efficiency, reduce usage Volume, volume and weight reduction effect

Pending Publication Date: 2021-11-26
BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing traditional dehumidification method for measuring the concentration of radon in the air is mainly to install a drying tube (built-in desiccant) at the air inlet, and all the air sucked by the instrument will pass through the desiccant. See the principle image 3 The main problems of the dehumidification method for measuring radon concentration in the above air are: because the measurement requires the radon meter to pump air for at least 10 minutes or use the method of pumping while measuring the concentration, how much gas needs to be pumped in the above drying method As long as it is dry, it requires a large amount of desiccant to be carried for each measurement, which is inconvenient and expensive for portable radon detectors

Method used

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  • Radon measurement dehumidification method

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Effect test

Embodiment 1

[0021] The invention provides a radon measurement and dehumidification method, the specific steps are as follows:

[0022] Step 1: Prepare radon daughter filter 1, flowmeter 2, first solenoid valve 3, radon measuring chamber 4, detector 5, pump 6, second solenoid valve 7 and drying pipe 8, and the detector 5 is installed on Measuring the inside of the radon chamber 4;

[0023] Step 2: The output end of the radon daughter filter 1 is connected to the input end of the flow meter 2, the output end of the flow meter 2 is connected to the input end of the first electromagnetic valve 3, and the output end of the first electromagnetic valve 3 The output end is connected to the input end of the radon measuring chamber 4, the output end of the radon measuring chamber 4 is connected to the input end of the pump 6, and the output end of the pump 6 is connected to the input end of the second solenoid valve 7, and the second electromagnetic valve 7 is connected to the output end of the pum...

Embodiment 2

[0028] The invention provides a radon measurement and dehumidification method, the specific steps are as follows:

[0029] Step 1: Prepare radon daughter filter 1, flowmeter 2, first solenoid valve 3, radon measuring chamber 4, detector 5, pump 6, second solenoid valve 7 and drying pipe 8, and the detector 5 is installed on Measuring the inside of the radon chamber 4;

[0030] Step 2: The output end of the radon daughter filter 1 is connected to the input end of the flow meter 2, the output end of the flow meter 2 is connected to the input end of the first electromagnetic valve 3, and the output end of the first electromagnetic valve 3 The output end is connected to the input end of the radon measuring chamber 4, the output end of the radon measuring chamber 4 is connected to the input end of the pump 6, and the output end of the pump 6 is connected to the input end of the second solenoid valve 7, and the second electromagnetic valve 7 is connected to the output end of the pum...

Embodiment 3

[0035] The invention provides a radon measurement and dehumidification method, the specific steps are as follows:

[0036] Step 1: Prepare radon daughter filter 1, flowmeter 2, first solenoid valve 3, radon measuring chamber 4, detector 5, pump 6, second solenoid valve 7 and drying pipe 8, and the detector 5 is installed on Measuring the inside of the radon chamber 4;

[0037] Step 2: The output end of the radon daughter filter 1 is connected to the input end of the flow meter 2, the output end of the flow meter 2 is connected to the input end of the first electromagnetic valve 3, and the output end of the first electromagnetic valve 3 The output end is connected to the input end of the radon measuring chamber 4, the output end of the radon measuring chamber 4 is connected to the input end of the pump 6, and the output end of the pump 6 is connected to the input end of the second solenoid valve 7, and the second electromagnetic valve 7 is connected to the output end of the pum...

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Abstract

The invention discloses a radon measurement dehumidification method, and particularly relates to the field of air radon concentration measurement, and the method comprises the following specific steps: radon-containing air passes through a radon daughter filter, a flowmeter, a first solenoid valve, a radon measurement chamber, a pump and a second solenoid valve, and is finally discharged into the atmospheric environment; and the air in the radon measuring chamber is completely replaced by air with the same radon concentration as the external air, then the air in the radon measuring chamber forms internal circulation through the drying pipe, moisture in the air is absorbed by the drying pipe and becomes dry radon-containing air with extremely low humidity, dehumidification of an air sample to be measured is completed, and measurement of the sample is started. On the premise that radon concentration measurement is not affected, the same drying effect can be achieved when the using amount of the drying agent is one third of that of a traditional method, the using amount of the drying agent is greatly reduced, the size and the weight of a radon measuring instrument are reduced, and the portability and the measuring efficiency of the radon measuring instrument are effectively improved.

Description

technical field [0001] The embodiment of the present invention relates to the field of air radon concentration measurement, in particular to a radon measurement and dehumidification method. Background technique [0002] The existing traditional dehumidification method for measuring the concentration of radon in the air is mainly to install a drying tube (built-in desiccant) at the air inlet, and all the air sucked by the instrument will pass through the desiccant. See the principle image 3 The main problems of the dehumidification method for measuring radon concentration in the above air are: because the measurement requires the radon meter to pump air for at least 10 minutes or use the method of pumping while measuring the concentration, how much gas needs to be pumped in the above drying method As far as drying is concerned, this requires a large amount of desiccant to be carried for each measurement, which is inconvenient and expensive for portable radon measuring instrum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/167G01N1/28
CPCG01T1/167G01N1/28
Inventor 王攀王晓琼杨明理孙雪云胡鹏华周磊陈刚初旭阳
Owner BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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