Anti-pollution air sampling pipe for hydrogen chloride sampling

By designing a U-shaped air sampling tube and installing a sealing element, the problem of external air pollution during hydrogen chloride sampling was solved, resulting in more stable and accurate hydrogen chloride measurement.

CN224247399UActive Publication Date: 2026-05-15XINJIANG NEW ENERGY (GRP) ENVIRONMENTAL TESTING CO LTD
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Patent Information

Application Number
CN202520883822.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-07
Publication Date
2026-05-15
Estimated Expiration
2035-05-07

AI Technical Summary

Technical Problem

Existing air sampling tubes are easily contaminated by external air during hydrogen chloride sampling, which affects the measurement results.

Method used

An air sampling tube comprising an inlet pipe section, a reaction pipe section, and an exhaust pipe section was designed. It adopts a U-shaped structure and is equipped with an inlet seal and an exhaust seal to ensure that the inside of the tube is sealed during non-sampling stages, thereby increasing the reaction space and increasing the contact area between hydrogen chloride and alkaline absorbent by using a porous glass plate absorption tube.

Benefits of technology

This effectively prevents external air from affecting the sampling volume and measurement results, reduces human-caused contamination, and improves the stability and accuracy of the sampling process.

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Abstract

The utility model relates to the technical field of gas sample collection, and particularly discloses an anti-pollution air sampling pipe for hydrogen chloride sampling, which comprises a gas inlet pipe section, a reaction pipe section and an exhaust pipe section, the reaction pipe section is of a U-shaped structure, and the gas inlet end of the reaction pipe section is communicated and fixedly connected with the gas outlet end of the gas inlet pipe section; the gas outlet end of the reaction pipe section is communicated and fixedly connected with the gas inlet end of the exhaust pipe section, the gas outlet end of the exhaust pipe section is hermetically connected with a gas suction port of the flue gas sampling instrument, a gas inlet sealing element is mounted at the gas inlet end of the gas inlet pipe section, an exhaust sealing element is mounted at the gas outlet end of the exhaust pipe section, and a liquid adding element is arranged on the end side, close to the exhaust pipe section, of the reaction pipe section. The air inlet pipe section, the reaction pipe section and the exhaust pipe section are of an integrally-formed structure, the connecting cross beam is arranged between the inner sides of the two ends of the reaction pipe section, and the problem that before and after traditional hydrogen chloride is sampled, the structure of an air sampling pipe is integrally circulated, air gas is easily introduced additionally, and the measurement result of hydrogen chloride is interfered is solved.
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