Composite valve seat seal ring structure

By using a multi-layer design for the composite valve seat sealing ring, combining a high-hardness metal matrix ring, an elastic layer, and a functional coating, the problem of short service life of traditional sealing rings under high pressure, high temperature, or highly corrosive media is solved. This achieves high wear resistance and sealing effect, reduces assembly difficulty and leakage risk, and improves equipment stability.

CN224469651UActive Publication Date: 2026-07-07TIANJIN TONGSHUNPING VALVE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TIANJIN TONGSHUNPING VALVE CO LTD
Filing Date
2025-08-20
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Traditional valve seat sealing rings have a short service life under high pressure, high temperature or strong corrosive media, and require high installation accuracy, which can easily lead to sealing failure or leakage.

Method used

It adopts a composite structure, consisting of a high-hardness metal substrate ring, an elastic layer, and a functional coating. The outer circumference of the substrate ring has a groove for installation, and the inner side has a positioning groove. The elastic layer is embedded in the substrate ring and has micropores. The functional coating covers the elastic layer and has annular protrusions. The multi-layer design improves wear resistance and sealing performance.

Benefits of technology

It significantly improves the service life and sealing performance of the sealing ring under complex working conditions, reduces assembly difficulty and leakage risk, and enhances the operational stability of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a composite valve seat sealing ring structure, it includes base body ring, elastic layer and functional coating. Base body ring is made of high hardness metal, and the outer periphery is equipped with trapezoidal recess, and the inside is equipped with positioning groove, the elastic layer is embedded in the base body ring, adopts polyurethane material and contains fiber reinforced strip, the functional coating covers elastic layer, is made of ceramic matrix composite material, and the surface is equipped with annular projection. This structure promotes mechanical support, elasticity and corrosion resistance through multilayer design, solves the short life problem of traditional sealing ring under high pressure, high temperature or strong corrosive medium. At the same time, the low mounting precision requirement is adapted to complex working condition, and the sealing performance and service life are improved significantly, and it is applicable to mass production and various fluid control equipment.
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