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Radon exhalation rate measuring instrument

A technology of radon exhalation rate and measuring instrument, which is applied in the field of radon measurement, can solve the problems affecting the detection accuracy and pressure difference, and achieve the effects of avoiding danger, improving accuracy and ensuring safety

Pending Publication Date: 2021-08-10
赛睿环仪(北京)科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, forced air circulation will inevitably produce a pressure difference. When the pressure on the surface of the object to be tested is different from that in the natural state, the radon gas content on the surface of the object to be tested will also be different from that in the natural state. This measurement method will affect the accuracy of the detection.

Method used

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  • Radon exhalation rate measuring instrument
  • Radon exhalation rate measuring instrument
  • Radon exhalation rate measuring instrument

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Experimental program
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Effect test

Embodiment 1

[0028] Such as figure 2 As shown, the radon measuring chamber 300 is a shell structure, and is arranged inside the precipitation cover 200, wherein the shell of the radon measuring chamber 300 is charged, and the charged amount is the first voltage value, and the detector 400 has a processing circuit and a probe 414 Two parts, the probe 414 part extends into the inside of the radon measuring chamber 300, and has a second voltage value, wherein the first voltage value is greater than the second voltage value, the positive high voltage radon measuring chamber 300 and the low voltage probe 414 form electrostatic field.

[0029] The casing of the radon measuring chamber 300 is provided with through holes, and there are multiple through holes distributed in various positions of the casing, so as to ensure that the external air can freely diffuse into the radon measuring chamber 300 .

[0030] In the precipitation cover 200, a protective plate 500 is also provided. The protective ...

Embodiment 2

[0034] Such as image 3 As shown, the inside of the shell of the precipitation cover 200 is the chamber 300 for measuring radon, the probe 414 of the detector 400 is arranged inside the shell of the precipitation cover 200, and the detector 400 is a negative high voltage detector 410, and the shell of the precipitation cover 200 is used Conductive material, and ground the precipitation cover 200 at the same time, the zero-voltage shell and the negative high-voltage detector 400 form a collection electric field to collect positively charged radon progeny.

[0035] Since the shell has been grounded and has zero voltage, the precipitation cover 200 no longer needs insulation treatment, which greatly simplifies the structure and volume of the radon precipitation rate measuring instrument, and simplifies the insulation process.

[0036] In the precipitation cover 200, a protective plate 500 is also provided. The protective plate 500 is arranged at the opening of the precipitation c...

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Abstract

The invention relates to the technical field of radon measurement, and provides a radon exhalation rate measuring instrument which comprises a radon exhalation cover, a radon measurement chamber and a detector. The radon measurement chamber is arranged in the radon exhalation cover, a collection electric field is formed because of a voltage difference between the detector and the radon measurement chamber, and radon daughters generated after radon decay carry positive charges and tend to one side with low potential energy of the electric field, so that the radon exhalation rate of the surface of an object to be measured in a natural state is measured.

Description

technical field [0001] The invention relates to the technical field of radon measurement, in particular to a radon exhalation rate measuring instrument. Background technique [0002] The principle of radon measurement mainly used by the existing radon measuring instrument is to make the air on the surface of the object to be measured flow into the radon measuring chamber, such as figure 1 As shown, the radon measuring instrument and the extraction cover are set separately, and an air pump is installed in the radon measuring instrument, under the action of the air pump, the air on the surface of the object to be measured flows into the radon measuring instrument for measurement. [0003] However, forced air circulation will inevitably produce a pressure difference. When the pressure on the surface of the object to be measured is different from that in the natural state, the radon gas content on the surface of the object to be measured will also be different from that in the n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/167G01T7/00
CPCG01T1/167G01T7/00
Inventor 许明发彭博赵建坤
Owner 赛睿环仪(北京)科技有限公司
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