公开(公告)号：US3688095A

公开(公告)日：1972-08-29

申请号：US577070

申请日：1970-01-26

申请人： TOKYO SHIBAURA ELECTRIC CO

发明人： SAKAMOTO TETSUZO ,  TORII AKIOMI ,  YOKOTA MITUHISA ,  SATO SEIKO

IPC分类号： F01D17/22 ,  F01D17/24 ,  F01D17/00

CPC分类号： F01D17/24 ,  F01D17/22

摘要： In a steam turbine control device wherein a steam control valve is controlled by a main control system responsive to an opening command signal from a speed control or a load control of the turbine, there are provided a throttle governing feedback circuit and a nozzle governing circuit which are connected in parallel and respond to the opening of the regulator valve to correct the opening thereof and a control circuit operative to gradually vary the difference signal between the feedback signals of the throttle governing and nozzle governing feedback circuits and to feed back the gradually varying difference signal to the main control system to switch the control of the steam regulator valve from the throttle governing operation to the nozzle governing operation without causing rapid increase of the steam flowrate. The control device is also provided with means to detect the rate of change in the steam pressure on the downstream side of the regulator valve.

摘要翻译： 在蒸汽涡轮机控制装置中，其中蒸汽控制阀由主控制系统控制，响应于来自涡轮机的速度控制或负载控制的打开指令信号，提供了一个节气门控制反馈电路和一个喷嘴控制电路， 并联连接并响应于调节阀的打开以校正其开度;以及控制电路，其可操作以逐渐改变节气门调节和喷嘴控制反馈回路的反馈信号之间的差信号，并反馈逐渐变化的差 信号到主控制系统，将蒸汽调节阀的控制从节气门调节操作切换到喷嘴调节操作，而不会引起蒸汽流量的快速增加。 控制装置还具有检测调节阀下游侧蒸汽压力变化率的装置。