Low-leakage bellows valve
By combining the rotary opening and closing structure of butterfly valves or ball valves with bellows-type valve stem sealing components, and using fully welded seals and linear actuators, the problems of high flow resistance, slow opening and closing, and high external leakage rate of existing valves in the nuclear energy field are solved, achieving comprehensive performance of low flow resistance, fast opening and closing, and extremely low external leakage.
Patent Information
- Application Number
- CN202610635150.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-05-09
- Publication Date
- 2026-07-17
AI Technical Summary
Existing valves in fields such as nuclear energy and nuclear fusion suffer from problems such as high flow resistance, slow opening and closing, and high external leakage rate, making it difficult to simultaneously meet the requirements of low flow resistance, fast opening and closing, and extremely low external leakage.
Combining the rotary opening and closing structure of a butterfly valve or ball valve with a bellows-type valve stem sealing assembly, it adopts a fully welded sealing structure, is equipped with a linear actuator and gear and rack drive, and is equipped with auxiliary sealing and leakage detection holes. It uses a disc spring to provide preload.
It achieves a balance between extremely low external leakage rate and low flow resistance, features rapid opening and closing and precise adjustment functions, provides dual sealing redundancy and online monitoring, and is suitable for high-risk occasions such as nuclear energy and nuclear fusion.
Smart Images
Figure CN122407853A_ABST