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    Electrohydraulic emergency trip system for a turbine power plant
    2.
    发明授权
    Electrohydraulic emergency trip system for a turbine power plant 失效
    涡轮发电厂电液紧急跳闸系统

    公开(公告)号：US3928976A

    公开(公告)日：1975-12-30

    申请号：US47711674

    申请日：1974-06-06

    申请人： WESTINGHOUSE ELECTRIC CORP

    发明人： BRAYTENBAH ANDREW S ,  JAEGTNES KARL O ,  SMITH MILLARD F

    IPC分类号： F01D21/00 ,  F01D21/02 ,  F01D21/16 ,  F01D21/20 ,  F01K13/02

    CPC分类号： F01D21/02 ,  F01D21/20

    摘要： An electrohydraulic emergency trip system and method, which rapidly closes the steam inlet valves to the turbine in response to one of a plurality of predetermined contingencies that are sensed by redundant devices is disclosed. The system is energized electrically by two independent power sources in a failsafe arrangement, both of which must fail to result in an unwarranted trip. Hydraulically, the system includes first and second trip valve means, both of which must operate to trip the turbine, and each of which are energized by one of the independent power sources. A test and indication panel is provided for selectively testing the response of the system to the occurrence of the predetermined contingencies and includes alarms and indications of system condition. Contingency simulation means are provided for subjecting each of the contingency sensing devices to a respective emergency trip environment during operation and the response of the system thereto without affecting the operational condition being simulated, and permitting the system to remain responsive to a trip contingency.

    摘要翻译： 公开了一种电液式紧急跳闸系统和方法，其响应于由冗余设备感测到的多个预定意外事件中的一个而迅速关闭到涡轮机的蒸汽入口阀。 该系统在故障安全装置中由两个独立的电源电气供电，两者都不能导致无理的行程。 在液压方面，该系统包括第一和第二跳闸阀装置，它们都必须工作以使涡轮机跳闸，并且其中的每一个由独立动力源之一激励。 提供测试和指示面板，用于选择性地测试系统对预定意外事件的发生的响应，并且包括系统状况的报警和指示。 应急模拟装置被提供用于在操作期间对每个应急感测装置进行相应的紧急跳闸环境以及系统的响应，而不影响正在模拟的操作条件，并且允许系统保持响应于跳闸应急状态。