Multi-point rotational flow type gas sampling device

Abstract

The invention belongs to the technical field of gas component monitoring and in particular relates to a multi-point rotational flow type gas sampling device. The invention provides the multi-point rotational flow type gas sampling device which can be used for uniformly mixing sample gas. The multi-point rotational flow type gas sampling device comprises a rotational flow mixing chamber and a plurality of sampling branch pipes, and is structurally characterized in that sampling points of all the sampling branch pipes are uniformly arranged along the radial direction of a flue; the sampling branch pipes are communicated with the rotational flow mixing chamber; outlets of the sampling branch pipes are uniformly arrayed in the rotational flow mixing chamber along the same clockwise direction;an analysis instrument probe mounting interface or a sampling probe mounting interface is arranged above the rotational flow mixing chamber.

Description

technical field [0001] The invention belongs to the technical field of gas component monitoring, and in particular relates to a multi-point swirling gas sampling device. Background technique [0002] With the development of economy and technology and the progress of society, people have higher and higher requirements for environmental quality, especially air quality. At the same time, the production process of energy, steel and other materials produces a large amount of harmful gases. The two are contradictory. This requires us to seek a balance between environmental quality and material demand, and the measurement of harmful gases becomes an important part of the balance. In addition, other gas components measured in production and life, such as oxygen, carbon monoxide, ammonia, etc., are also equivalent to the measurement of gas pollutants. [0003] Existing gas monitoring system sampling devices are often unable to find representative sampling points due to factors such ...

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Problems solved by technology

[0003] Existing gas monitoring system sampling devices are often unable to find representative sampling points due to factors such as large cross-sectional area of ​​the gas pipeline, short straight section of the pipeline, and single-point sampling, resulting in a large deviation between the gas content of the measured sample gas and the overall gas content

In addition, due to the large amount of solid impurities in the measured gas, the sampling branch pipeline and the filter element of the probe are often blocked. The existing methods of backflushing blockages are mostly compressed air backflushing or physical dredging. Continuous gas monitoring cannot be performed during the backflushing process, which affects parameter monitoring. and industrial adjustment

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