A natural gas filling device reliable in sealing

By designing a liquid filling gun, liquid receiving assembly and air return assembly with spiral grooves and spring energy storage seals, the existing problems of complex structure, cumbersome operation and low sealing reliability of the existing liquid filling gun are solved, and natural gas filling is realized The sealing reliability and operation convenience of the device make it suitable for liquefied natural gas and other cryogenic liquid media.

CN105371101AInactive Publication Date: 2016-03-02XIAN GERUIDE NEW CHEM MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAN GERUIDE NEW CHEM MATERIALS CO LTD
Filing Date
2014-08-16
Publication Date
2016-03-02
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

⚠Technical Problem

The existing liquid automobile fuel filling guns have complex structures, cumbersome operations, and low sealing reliability, resulting in low filling efficiency and high cost, and they need to rely on foreign imports.

⚗Method used

A natural gas filling device including a liquid filling gun, a liquid receiving component and a gas return component is designed. It adopts a valve core structure with a spiral groove and a spring energy storage sealing ring. The sealing, liquid filling and return are realized by rotating the operating handle. gas process to ensure sealing reliability and easy operation.

🎯Benefits of technology

A natural gas filling device with simple structure, low cost, easy operation and reliable sealing has been realized. It can maintain efficient sealing under normal and low temperature conditions. Life test shows that the sealing ring has a service life of more than 10,000 times without leakage. It is suitable for liquefied natural gas and Other cryogenic liquid media.

✦ Generated by Eureka AI based on patent content.
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Abstract

A natural gas filling device reliable in sealing is disclosed. The device is characterized in that the device comprises a liquid filling gun, a liquid receiving component matched with the liquid filling gun and used for filling a gas cylinder with liquid, and a gas returning component communicated with the gas outlet of the gas cylinder; the liquid filling gun is provided with a first outer shell, a first rotating fastener disposed in the first outer shell and connected to the first outer shell and the inner wall of which is provided with a symmetrical spiral groove, a first valve body between the first rotating fastener and the first shell, and a first valve core disposed in the first valve body and containing a liquid inlet and a liquid outlet; and the liquid receiving component is provided with a first shell, wherein the head of the first shell extends into the first rotating fastener and is in sealing match with the tail part of the first valve body, and the periphery of the first shell is provided with a first pivot pin engaged with the spiral groove in the first rotating fastener. The device is convenient in maintenance, replacement and operation of quick-wear parts and convenient to use. The device can be used for other low-temperature liquid media besides LNG and is simple in structure, low in cost, convenient in operation and reliable in sealing.
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