公开(公告)号：US20150152898A1

公开(公告)日：2015-06-04

申请号：US14557840

申请日：2014-12-02

Applicant: ALSTOM Technology Ltd.

Inventor： Slaven BANAY ,  Eduard Burch ,  Roger Bauer

IPC: F15B20/00 ,  F02C7/00

CPC classification number: F02C7/00 ,  F01D17/16 ,  F01D21/00 ,  F02C9/20 ,  F04D29/563 ,  F05D2270/64 ,  F15B20/002 ,  F15B20/008 ,  F15B2211/30565 ,  F15B2211/862 ,  F15B2211/8752

Abstract: A device for emergency operation of pneumatic or hydraulic actuators. For normal operation of the actuator, an operation cycle includes at least a proportional valve for switching to different operational conditions of the actuator and related engine components. The proportional valve is arranged in a supply line of pressurized liquid/gas and in a drain line connected to a tank, and control means for operation control and supervising functions. An emergency cycle is attached to the operation cycle of the actuator which is provided with: at least one solenoid valve for initiating an emergency operation impulse in case of detected failures; a plurality of pneumatically/hydraulically operated switch valves which may be activated through said impulse of an emergency signal from said solenoid valve; and whereby the emergency cycle is adapted to bypass said proportional valve in emergency situations and to either block said actuator in its actual position or to bring said actuator in a predefined safe position.

Abstract translation: 用于气动或液压执行机构紧急操作的装置。 对于致动器的正常操作，操作循环至少包括用于切换到致动器和相关发动机部件的不同操作条件的比例阀。 比例阀布置在加压液体/气体的供应管线和连接到罐的排水管线中，以及用于操作控制和监督功能的控制装置。 致动器的操作周期附有紧急循环，该操作循环具有：至少一个电磁阀，用于在检测到故障的情况下启动紧急操作脉冲; 多个气动/液压操作的开关阀，其可以通过来自所述电磁阀的紧急信号的所述脉冲启动; 并且由此紧急循环适于在紧急情况下绕过所述比例阀并且将所述致动器阻挡在其实际位置或使所述致动器处于预定的安全位置。