Modularized chimney gaseous effluent mixing uniformity research device

Abstract

The invention relates to a modularized chimney gaseous effluent mixing uniformity research device. According to the device provided by the invention, components with the same structure in the long straight pipe section and the elbow pipe section are uniformly designed, so that the components can be flexibly assembled and replaced in the use process, and the material cost is greatly saved; and the modular device is easy to disassemble, flexible to assemble and convenient to clean and maintain regularly. The device provided by the invention can realize simulation of a long straight pipe section, an elbow pipe section, a flue gas mixing chamber and a longitudinal chimney main body in an actual chimney structure, and on the basis, nuclear facility chimney gaseous effluent sampling representativeness verification and related research are carried out. In addition, the cubic mixing chamber module in the device can be connected with a plurality of air inlet pipelines, and various ventilation working conditions such as two-branch opposite air inlet, two-branch lateral air inlet, three-branch air inlet and four-branch air inlet can be studied.

Description

technical field [0001] The invention belongs to the technical field of research on radioactive gaseous effluents, and relates to a modular research device for mixing uniformity of gaseous effluents from chimneys. Background technique [0002] The radioactive gaseous effluents of nuclear facilities are mainly discharged into the environment through pipes or chimneys. Gas sampling systems are usually installed in nuclear facilities to continuously sample and measure gaseous effluents. Since the distribution of radioactive substances in the pipeline or chimney flow field may not be uniform, whether the obtained samples are representative will directly affect the accuracy of gaseous effluent measurement. [0003] The nuclear facility chimney gaseous effluent research device is a chimney model scaled down to a certain scale based on the principle of geometric similarity. It is mainly used for representative verification of nuclear facility chimney gaseous effluent sampling and r...

AI Technical Summary

Problems solved by technology

[0006] ① Horizontal pipes cannot represent the migration and mixing of gaseous effluents in vertical chimney pipes;

[0007] ②The pipe structure is difficult to be geometrically similar to the actual chimney, and there is a lack of typical structures such as mixing chambers;

[0008] ③The device cannot be modularized, the utilization rate of components is not high, and the usage scenarios are limited

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