A self-sealing valve

By employing a self-sealing structure and an external sealing mechanism, the problem of insufficient sealing reliability in traditional valves is solved, enabling continuous sealing and emergency sealing under high-pressure conditions, thereby improving the safety and reliability of the valves.

CN224479308UActive Publication Date: 2026-07-10肯拓流体控制技术(江苏)研究院有限公司
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
肯拓流体控制技术(江苏)研究院有限公司
Filing Date
2025-07-29
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Traditional valves have the problems of high risk of external leakage and insufficient sealing reliability. In particular, under high pressure conditions, the medium is prone to leakage from the gap between the valve stem and the packing, causing safety hazards and environmental pollution.

Method used

It adopts a self-sealing structure, including a dynamic sealing system consisting of a fixed sealing ring, a sealing elastic compression layer and a spring. Combined with an external sealing structure, it achieves emergency sealing through gas injection, ensuring real-time adjustment and restoration of sealing performance.

Benefits of technology

It provides a continuous seal in the initial state, dynamically adjusts the sealing pressure to resist wear, and enables rapid emergency sealing through external gas drive in case of leakage, reducing downtime losses and improving sealing reliability and safety.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224479308U_ABST
    Figure CN224479308U_ABST
Patent Text Reader

Abstract

The utility model discloses a kind of prevent external leakage self-sealing valves, belong to valve technical field, including valve body and valve stem, the valve stem is rotationally connected in the inside of the valve body, the inside of the valve body is integrally formed with placing cavity, the inside of placing cavity is connected with spherical valve core, the bottom of the valve stem is fixedly connected with the spherical valve core, the sidewall of placing cavity is fixedly connected with two self-sealing structures, in the utility model, initial state, fixed sealing ring of spherical valve core two sides and extrusion sealing ring form basic sealing, sealing elastic extrusion layer because initial compression continuously applies thrust to extrusion sealing ring, so that it is closely attached spherical valve core outer wall, forms first dynamic sealing barrier, simultaneously, spring in sealing cavity provides secondary elastic compensation, when pipeline pressure fluctuation or valve frequent opening and closing lead to sealing surface abrasion, the elastic deformation of spring can real-time adjustment sealing pressure, ensure that extrusion sealing ring always keeps attached spherical valve core, avoid medium leakage.
Need to check novelty before this filing date? Find Prior Art