Axial flow shut-off valve and sealing structure of its floating valve seat
By using a floating valve seat structure and a slope seal, the impact pressure problem of axial flow shut-off valves during closure is solved, thereby improving sealing performance and durability.
CN224380626UActive Publication Date: 2026-06-19SHANGHAI FIORENTINI GAS EQUIP
View PDF 0 Cites 0 Cited by
Patent Information
- Application Number
- CN202521317447.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-25
- Publication Date
- 2026-06-19
- Estimated Expiration
- 2035-06-25
AI Technical Summary
Technical Problem
The sealing structure of existing axial flow shut-off valves is easily damaged by impact pressure when closed, affecting sealing performance and product durability.
Method used
The valve seat adopts a floating seat structure, which allows the valve seat to float axially. Combined with slope sealing and elastic connection, it ensures tight contact and sealing between the valve seat and the closing element.
Benefits of technology
It effectively protects the valve seat from crushing, extends its service life, ensures sealing performance and facilitates seal replacement, and improves product performance stability.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224380626U_ABST
Abstract
A sealing structure for an axial flow shut-off valve and its floating valve seat is disclosed. The sealing structure includes a valve body, a closing element, and a valve seat. The valve body has a first port and a second port, which are connected via a fluid flow channel for fluid flow. The closing element is installed inside the valve body and can move axially relative to the valve body to achieve shut-off and conduction. The valve seat is installed at the first port and can float axially relative to the first port. In the shut-off state, the closing element abuts against the valve seat to block the fluid flow channel and restrict fluid flow. In the conduction state, the closing element and the valve seat separate, and the first port and the second port are connected. A first sealing element is provided at the end of the valve seat and / or the closing element that is close to each other. This application uses a floating valve seat, which can protect the valve seat from crushing when the valve body is shut off and compensate for unevenness between the valve seat and the end of the closing element. Combined with the first sealing element, an effective seal can be achieved between the valve seat and the closing element.
Need to check novelty before this filing date? Find Prior Art