公开(公告)号：US20110041503A1

公开(公告)日：2011-02-24

申请号：US12857988

申请日：2010-08-17

申请人： Yosuke HIRAKAWA ,  Mitsuru Sudo ,  Ichiro Hiraga ,  Tsugutomo Teranishi

发明人： Yosuke HIRAKAWA ,  Mitsuru Sudo ,  Ichiro Hiraga ,  Tsugutomo Teranishi

IPC分类号： F01D21/14

CPC分类号： F01D21/14 ,  F01D21/20 ,  F01K7/34 ,  F01K7/345 ,  F01K13/02 ,  F22D1/28

摘要： An object of the present invention is to provide a turbine protection device which can interrupt backflow from a deaerator to a turbine completely even if a check valve provided between the deaerator and the turbine can not interrupt the steam flow between the deaerator and the turbine completely. In order to achieve the above object, a control unit sends commands to a shutdown valve device so as to close the shutdown valve device when a differential pressure resulted from subtracting a pressure of a extraction steam from a pressure within the deaerator becomes greater than or equal to a first predetermined value. As a result, the backflow from the deaerator to the turbine is interrupted by a stop valve of the shutdown valve device.

摘要翻译： 本发明的目的是提供一种涡轮机保护装置，其即使在脱气器和涡轮机之间设置的止回阀也不能完全中断脱气器和涡轮机之间的蒸汽流动，因此可以完全中断从脱气器到涡轮机的回流。 为了实现上述目的，当从脱气器内的压力减去提取蒸汽的压力而产生的压差变得大于或等于一个时，控制单元向关闭阀装置发送命令以关闭关闭阀装置 到第一预定值。 结果，从脱气器到涡轮机的回流被关闭阀装置的截止阀中断。