公开(公告)号：US5079922A

公开(公告)日：1992-01-14

申请号：US609938

申请日：1990-11-07

申请人： Paul W. Viscovich ,  George J. Silvestri, Jr. ,  Richard M. Stephani ,  Homer G. Hargrove

发明人： Paul W. Viscovich ,  George J. Silvestri, Jr. ,  Richard M. Stephani ,  Homer G. Hargrove

IPC分类号： F01D17/24 ,  F01D25/32 ,  F01K7/24 ,  F01K7/40

CPC分类号： F01K7/24 ,  F01K7/40

摘要： A steam turbine system has a plurality of moisture-separator-reheaters (MSR) each connected via a respective drain line to a corresponding drain receiver. Each drain receiver includes a further drain line coupled through a flow control valve to a common line. The common line empties into a drain cooler connected at the highest pressure end of a series of feedwater reheaters. The drain cooler dumps through another flow control valve to one of the feedwater heaters. Each of the drain receivers includes a pressure sensor and liquid level sensor. A control processor monitors the pressure sensors and selects the drain receiver subjected to the lowest pressure. The processor then fully opens the valve associated with the selected drain receiver and thereafter regulates the liquid level in the others of the drain receivers by adjustment of their respective flow control valves in response to their respective level sensors. The liquid level in the selected drain receiver is adjusted to its preselected level by control of the flow control valve connected to the drain cooler. The pressure in the common drain line is regulated to the pressure at the lowest pressure drain receiver by adjustment of the control valves associated with the other drain receivers.

摘要翻译： 蒸汽涡轮机系统具有多个湿气分离器再热器（MSR），每个湿气分离器再热器通过相应的排水管线连接到相应的排水接收器。 每个漏极接收器包括通过流量控制阀耦合到公共线路的另外的排出线。 普通管路排入连接在一系列给水再热器的最高压力端的排水冷却器。 排水冷却器通过另一个流量控制阀排入给水加热器之一。 每个排水接收器包括压力传感器和液位传感器。 控制处理器监视压力传感器并选择经受最低压力的排水接收器。 然后，处理器完全打开与所选择的排水接收器相关联的阀，此后通过响应于它们各自的液位传感器调节它们各自的流量控制阀来调节排水接收器中的其它液位。 通过控制连接到排水冷却器的流量控制阀，将所选择的排水接收器中的液面调整到其预选的水平。 通过调节与其他排水接收器相关联的控制阀将普通排水管路中的压力调节到最低压力排放接收器处的压力。