| 摘要 |
PURPOSE:To simplify the continuous free blow operation and prolong the life of a gas turbine by arranging a line for charging the auxiliary steam from a boiler in a plant into steam drums and stripping-off the sticked articles on the steam pipes by using said auxiliary steam. CONSTITUTION:A gas-turbine combined plant is equipped with a gas turbine 4 and a steam turbine 12, and the high and low pressure drums 3 and 11, superheater 5, high and low pressure evaporators 6 and 9, and high and low pressure coal economizers 8 and 10 are arranged. The foreign articles sticked onto the inside surfaces of the pipes in the course starting from the gas pipe of the superheater 5 to the inlet of the gas turbine 4 through a main steam pipe 14 are stripped-off by utilizing the auxiliary steam supplied from a boiler 1 in the plant, and said foreign articles are removed from a blow pipe 15. Thus, the continuous free blow operation can be simplified, and the service life of the gas turbine can be prolonged. |
