A fully automatic halogen gas measuring device

Abstract

The invention relates to a fully automatic halogen gas measuring device, which includes a gas path part and a gas path control part, the gas path part includes a gas collection part, an intake time control part and a gas measurement part; the gas collection part is used to collect the measured gas and air, and send the collected two gases to the intake time control part through their respective pipelines; the intake time control part mixes the two gases through an output pipeline and then sends them to the gas measurement part; the gas measurement part The gas concentration is measured; the gas circuit control part includes a control and data processing module and a data display module. The control and data processing module is used to control the on and off time of the two gases of the intake time control part, and receive feedback from the gas measurement part. The electric signal is sent to the data display module after calculation and processing. The measuring device of the present invention realizes the real-time online measurement of the halogen gas from 1ppb-50ppm; the measuring range is wide and the sensitivity is high.

Description

technical field [0001] The invention belongs to the field of gas detection, and in particular relates to a fully automatic halogen gas measuring device. Background technique [0002] Iodine adsorber is the key purification equipment in the nuclear air purification system. It is mainly used in the iodine removal and exhaust system of various nuclear facilities (such as nuclear submarine maintenance bases, reprocessing plants, research reactors, nuclear industry scientific research units, nuclear power plants, etc.). The last barrier to prevent radioactive iodine from entering the surrounding atmosphere under normal operation of nuclear facilities and accident conditions. Therefore, for the newly installed iodine adsorber (arrangement) in the nuclear facility, the on-site leak test must be carried out before operation, and the installed iodine adsorber must be regularly on-site leak test during operation to ensure the function of the iodine adsorber. Effectiveness to ensure t...

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Problems solved by technology

[0004] At present, in the application field of nuclear air purification technology in China, the halogen gas detection devices used in the on-site leakage test of iodine adsorbers using Freon method are all imported from abroad, which are expensive, long delivery cycle, high and inconvenient for instrument maintenance. Especially when reading the measurement results, it is necessary to manually judge whether the final measurement signal is stable, and then give the final result based on the records and offline calculations, resulting in large measurement errors and delays in obtaining results. These factors seriously restrict the annual verification. The on-site leak test of the air purification system of the facility went smoothly

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