A high-pressure double-seal structure one-way valve
By using a check valve with a double sealing structure, and utilizing the conical sealing pair and planar sealing pair of the PEEK non-metallic valve seat and the metal end cap, the problem of unreliable sealing in high-pressure hydrogen environments is solved, and reliable media control and automated operation are achieved.
CN224469737UActive Publication Date: 2026-07-07JIANGSU SIWEI FLUID CONTROL TECHNOLOGY CO LTD
Patent Information
- Authority / Receiving Office
- CN Β· China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU SIWEI FLUID CONTROL TECHNOLOGY CO LTD
- Filing Date
- 2025-06-05
- Publication Date
- 2026-07-07
AI Technical Summary
Technical Problem
Existing check valves have unreliable sealing performance in high-pressure hydrogen environments and are prone to leakage.
Method used
It adopts a dual sealing structure, including a conical sealing pair of PEEK non-metallic valve seat and metal end cap, combined with a flat sealing pair, and is fixed by threaded connection. It uses a spring to provide initial sealing force and quick closing function, and is equipped with a leak detection hole to detect the sealing effect.
Benefits of technology
It achieves reliable sealing in high-pressure hydrogen environments, preventing media leakage, and requires no manual operation, featuring automatic control functions.
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Smart Images
Figure CN224469737U_ABST
Abstract
The utility model discloses a high pressure is with double sealed structure check valve, including valve body, spring, valve, valve seat, end cover, screw nut and compression nut, the inside of valve body is provided with spring, the inside of valve body is provided with valve, it is connected through screw thread between valve body and end cover, the valve seat is inlayed in end cover. The device is composed of valve seat and valve and forms the conical surface sealing pair, the valve seat is inlayed in end cover, and the sealing part of valve includes the conical surface part of valve seat and end cover, the valve seat is PEEK non -metal material, and it is the effect of main sealing, and end cover is metal material, and it is the effect of vice -sealing, and provide certain support effect simultaneously, and the valve seat and valve form plane sealing pair, prevent the medium and leak, and the sealing force has end cover thread pre -tightening force to provide, and compression spring acts on valve, and its effect is to provide certain initial sealing force, and its effect two is when medium reflux, and help valve fast closing and realize sealing.
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