Automatic protection device for gas cutoff of carrier gas of gas chromatographic analyzer

By designing an automatic protection device for air-breaking of carrier gas, the air lock valve, air-controlled valve and small gas storage tank automatically extinguish the flame of the FID detector and purify the detector when the carrier gas is disconnected, the damage to the analyzer by continuous combustion of the flame after the carrier gas is disconnected is solved, and the accuracy and reliability of the analyzer are improved.

CN222689711UActive Publication Date: 2025-03-28LEVIMA ADVANCED MATERIALS CORP
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Patent Information

Application Number
CN202421057581.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-15
Publication Date
2025-03-28
Estimated Expiration
2034-05-15

AI Technical Summary

Technical Problem

After the carrier gas is cut off, the flame of the FID detector of the gas chromatography analyzer continues to burn before manually stopping the meter, causing damage to the detector to the high temperature and water vapor, thereby reducing the accuracy of the analyzer or causing damage.

Method used

An automatic protection device for air-extinguishing of carrier gas is designed, including an air lock valve, a first air-controlled valve, a second air-controlled valve and a small gas storage tank. These components are used to automatically extinguish the flame of the FID detector when the carrier gas is disconnected, and the carrier gas purge detector in the small gas storage tank is carried away by taking away water vapor and heat to protect the detector.

Benefits of technology

It realizes automatic meter shutdown and purge the detector when the carrier gas is disconnected, preventing high temperature and water vapor from damage to the detector, improving the accuracy and reliability of the analyzer, and avoiding potential damage.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model discloses a gas chromatographic analyzer carrier gas cut-off automatic protection device which comprises a gas lock valve, a first pneumatic control valve, a second pneumatic control valve and a small gas storage tank, and a carrier gas inlet and a fuel gas inlet of a gas chromatographic analyzer are respectively connected with a carrier gas pipeline and a fuel gas pipeline; the fuel gas pipeline is connected with a first pneumatic control valve, and the carrier gas pipeline is sequentially connected with an airlock valve, a second pneumatic control valve and a small gas storage tank at intervals in the flowing direction of carrier gas in the carrier gas pipeline. And the first pneumatic control valve and the second pneumatic control valve are both connected with the airlock valve. The device has the advantages that when the carrier gas is cut off, the flame of the FID detector of the gas chromatographic analyzer is automatically extinguished, the analyzer is automatically stopped, the FID detector can be purged for a period of time, water vapor generated by combustion is taken away, heat is taken away, the temperature of the FID detector is reduced, the detector is protected, and the detector is prevented from being damaged by condensate water and high temperature.
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