A planar floating seal

By designing a combination of a rectangular sealing ring body, a metal support ring, and an anti-extrusion retaining ring, the problems of easy damage to valve seals and insufficient sand prevention under high pressure are solved. This achieves self-adaptive sealing, simplifies installation, reduces maintenance costs, and extends the service life of valves.

CN117287508BActive Publication Date: 2026-07-24JIANGSU FUJIE HIGH-END EQUIP MFG (GRP) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU FUJIE HIGH-END EQUIP MFG (GRP) CO LTD
Filing Date
2023-09-04
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing valve seals are easily damaged under high pressure, difficult to install, have insufficient sand protection, high maintenance costs, and are expensive, requiring special tools for replacement.

Method used

A planar floating seal is designed, comprising a sealing ring body with a rectangular cross-section, a metal support ring and a pressure groove on the bottom end face, and a metal anti-extrusion retaining ring and an arc sealing convex surface on the outer ring. The pressure groove converts pressure into thrust, thereby enabling the seal to float and be positioned, preventing sand particles from entering, reducing gaps, and improving strength.

Benefits of technology

It achieves adaptive compensation for sealing performance under high pressure, prevents sand particles from entering, reduces maintenance costs, simplifies the installation process, and extends the service life of the valve.

✦ Generated by Eureka AI based on patent content.

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    Figure CN117287508B_ABST
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Abstract

The application discloses a kind of plane floating seal, including plane floating seal ring body, the cross section of the plane floating seal ring body is set to rectangle, and the bottom end surface of the plane floating seal ring body is equipped with a circle of metal support ring, the plane floating seal ring body is set to sealing surface on the side away from metal support ring, the bottom end surface of the metal support ring is equipped with multiple annular and equidistant distribution pressure groove;The application creates conditions for pressure to quickly enter the bottom of plane floating seal, while converting working pressure into thrust, pushing plane floating seal towards the valve body seat hole end surface sliding, plane floating seal will be closely combined with valve body seat hole end surface, the degree of combination will change with pressure change, so that plane floating seal can compensate and eliminate the gap generated between valve body seat hole end surface and valve seat, while also having plane floating seal replacement without special proprietary tool, maintenance cost is low.
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