Double-plate gate valve and use of the same

US11131395B2 · kind B2 · utility

Assignees

• Beijing Aerospace Propulsion Institute · CN
• BEIJING AEROSPACE PETROCHEMICAL TECHNOLOGY AND EQUIPMENT ENGINEERING CORPORATION LIMITED · CN

Inventors

• Fan Yang · Stanford, US
• Jinxian Liu · Beijing, CN
• Yingren Ding · Beijing, CN
• Jin Guo · Beijing, CN
• Xiang Su · Beijing, CN
• Huan Yang · Beijing, CN
• Jingbo Han · Beijing, CN
• Pingyang Zheng · Beijing, CN

Key dates

• Filing date: Jan 28, 2019
• Grant date: Sep 28, 2021
• Expiry date: Jan 28, 2039

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16K3/316
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A double-plate gate valve includes a valve body, a valve cover, a valve stem, a guide plate, a goggle plate assembly, a diversion hole assembly, a disc spring assembly and a valve plate and wedge assembly. The goggle plate assembly provides mounting support for the diversion hole assembly and the valve plate and wedge assembly in the valve chamber, the goggle plate assembly is movable along with the diversion hole assembly and the valve plate and wedge assembly in the valve chamber, and floating seals are formed at a contact surface between the diversion hole assembly and the guide plate, and at a contact surface between the valve plate and wedge assembly and the guide plate. A face-to-face distance and a sealing force between a sealing surface of the diversion hole assembly and a sealing surface of the valve body are adjustable.