Piston hydrogen compressor cylinder, cylinder assembly and hydrogen compressor

By configuring a cylinder liner and spring support structure and a nitrogen replacement hole in the cylinder block of the hydrogen compressor, the problems of cylinder liner breakage and hydrogen embrittlement are solved, the sealing performance and reliability of the cylinder block are improved, and the operating cost is reduced.

CN121611600BActive Publication Date: 2026-06-26ZIGONG DONGFANG GENERAL COMPRESSOR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZIGONG DONGFANG GENERAL COMPRESSOR CO LTD
Filing Date
2026-02-02
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Under high temperature and high pressure conditions, the cylinder block structure of existing hydrogen compressors is prone to cylinder liner breakage, axial movement, and reduced sealing performance. Furthermore, the elastic elements are susceptible to hydrogen embrittlement and hydrogen corrosion, leading to reliability and safety issues.

Method used

The cylinder liner is supported on the piston rod seat at one end and on the cylinder head at the other end by a spring. It is equipped with a main sealing ring and a spring assembly. The spring is located at the end of the main sealing ring away from the cylinder liner. The spring provides axial support and adaptive deformation to prevent the boss from breaking. It also reduces hydrogen leakage through nitrogen replacement holes and secondary sealing rings.

Benefits of technology

It improves the thermal deformation adaptability of the cylinder liner, protects the performance of the sealing ring and spring, reduces the hydrogen leakage rate, ensures the reliability and safety of the compressor, and reduces the dependence on high-cost hydrogen-resistant materials.

✦ Generated by Eureka AI based on patent content.

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    Figure CN121611600B_ABST
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Abstract

The application discloses a piston type hydrogen compressor cylinder, a cylinder assembly and a hydrogen compressor, and relates to the technical field of hydrogen compressors.The cylinder assembly and the hydrogen compressor both comprise the cylinder, which comprises a cylinder barrel, wherein the cylinder barrel is provided with a cylinder cover and a piston rod seat, a cylinder sleeve is lined in the cylinder barrel, the inner end of the cylinder cover extends into the cylinder sleeve and provides radial support for the cylinder sleeve, one end of the cylinder sleeve is supported on the piston rod seat, and the other end is provided with a sealing assembly; the sealing assembly comprises a main sealing ring and a spring which are arranged in the interspace between the cylinder barrel and the cylinder cover; the main sealing ring serves as an axial sealing piece in the interspace, the main sealing ring is attached to the end of the cylinder sleeve, the spring is arranged on the side of the main sealing ring away from the cylinder sleeve, the spring serves as an elastic support structure for providing support for the main sealing ring, and the direction of the support force of the spring on the main sealing ring is along the axial direction of the cylinder barrel; and the structure design adopted in the scheme is beneficial to guaranteeing the reliability of the hydrogen compressor.
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