A Sampling Device for Measuring Radon Concentration in Broken Emanation Medium

Abstract

The invention relates to a sampling device for measuring the radon concentration inside a crushed emanation medium, in particular to a sampling device for radon diffusion-seepage in the inside of crushed uranium ore or uranium tailings in different states. The gas-collecting outer ring and the gas-collecting inner ring form two concentric circles with different diameters. The central gas-collecting box is located in the center of the concentric circles. The central gas-collecting box is a closed hollow circular box made of stainless steel welding; the air intake pipe and the exhaust pipe cross vertically. Arrangement, the cross vertical point coincides with the center of the gas-collecting outer ring and the gas-collecting inner ring, the ends of the intake pipe and the exhaust pipe are sealed, and the open end is welded with a quick-connect self-locking joint; The air hole F is connected with the outer ring of the gas collection, the air intake pipe is connected with the inner ring of the air collection through the air hole B and the air hole E, the air intake pipe is connected with the central air collection box through the air hole C; the exhaust pipe is connected with the central air collection box through the air hole D The central gas collection box is connected. The invention can reduce the disturbance to the balance of the internal environment of the measurement and improve the measurement accuracy.

Description

technical field [0001] The invention relates to a sampling device for measuring the radon concentration inside the broken emanation medium, especially for the radon diffusion-seepage inside the broken uranium ore or uranium tailings under different states (particle size, temperature, humidity and pressure). sampling device. Background technique [0002] The propagation of radon in the emanation medium causes radon to distribute in the emanation medium according to certain rules, and this distribution of radon is closely related to the power of the migration channel provided by the medium for radon and the radon concentration in the air. Therefore, the influence of air seepage on the radon exhalation rate in porous media has extensive significance, and has attracted the attention of researchers from all over the world. At present, scholars at home and abroad have carried out a large number of experimental and theoretical studies on the diffusion of radon in porous media and ...

AI Technical Summary

Problems solved by technology

Regardless of whether it is active or passive measurement, it will cause disturbance to the local measurement environment

Especially when obtaining the radon concentration inside the fragmented emanation medium, the measurement will break its original equilibrium state, increase the measurement error, and even lead to experimental erroneous results

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