| 摘要 |
PURPOSE:To enable a safe energization of a soot blower preventing an abnormal increase in steam temperature to be controlled by a method wherein a spray water control valve is opened and a temperature of steam at an outlet port of an overheater is decreased down to the desired value through an overheated steam temperature reducer and thereafter the soot blower is started to operate. CONSTITUTION:At a time when a soot blowing energization instruction (a) is generated, a primary spray water control valve SV1 is opened up to a specified value and the operation is waited until a secondary SH outlet steam temperature is decreased, and when a decreasing of the secondary SH outlet steam temperature is detected (c) with the secondary SH outlet steam temperature decreasing sensor circuit, a blowing of soot is initiated. With this an energization controlling method for a soot blower for preventing an abnormal increase of the secondary SH outlet steam temperature is provided. |
