公开(公告)号：WO2017058726A1

公开(公告)日：2017-04-06

申请号：PCT/US2016/053766

申请日：2016-09-26

Applicant: ELLIOTT COMPANY

Inventor： PACELLI, William, G. ,  WALSH, James, F.

IPC: F01D21/16 ,  F01D21/02 ,  F01D19/00 ,  F01D17/10

CPC classification number: F01D17/145 ,  F01D25/24 ,  F05D2220/31 ,  F05D2260/57 ,  F05D2260/83 ,  F15B11/10 ,  F15B19/005 ,  F15B20/008 ,  F15B2211/6336 ,  F15B2211/87 ,  F15B2211/8755 ,  F15B2211/8855 ,  F16K1/126 ,  F16K31/1221 ,  F16K31/406 ,  F16K37/0083

Abstract: A pneumatic trip system for a turbine includes a valve member; a valve stem connected to the valve member; and an actuator assembly connected to the valve stem. The actuator assembly includes a cylinder; a piston connected to the valve stem, the piston dividing the cylinder into a first chamber and a second chamber; a biasing element disposed in the second chamber of the cylinder; and a pneumatic circuit in communication with the second chamber of the cylinder. The pneumatic circuit is configured to pressurize the second chamber of the cylinder to actuate the piston to move the valve stem and the valve member to an exercised position between the open position and the closed position while the first chamber is pressurized.

Abstract translation: 一种用于涡轮机的气动跳闸系统包括阀构件; 连接到阀构件的阀杆; 以及连接到阀杆的致动器组件。 致动器组件包括气缸; 连接到所述阀杆的活塞，所述活塞将所述气缸分成第一室和第二室; 设置在所述气缸的所述第二室中的偏压元件; 以及与气缸的第二室连通的气动回路。 气动回路构造成对气缸的第二腔室进行加压以启动活塞，以在第一腔室被加压的同时将阀杆和阀构件移动到打开位置和关闭位置之间的锻炼位置。