초록 ▼

A method of operating a steam turbine facility which includes a turbine with at least a high pressure or a medium pressure cylinder and a steam reheater connected to the turbine and a valve-control bypass line connected across the reheater. During nominal and steady state operating modes of the faci

A method of operating a steam turbine facility which includes a turbine with at least a high pressure or a medium pressure cylinder and a steam reheater connected to the turbine and a valve-control bypass line connected across the reheater. During nominal and steady state operating modes of the facility, cold, steam leaving the turbine's high or medium pressure cylinder is split into two streams controlled by the valves. One stream amounting to 90%-50% of the steam leaving the turbine is fed to the bypass line while the other stream amounting to 10%-50% thereof is fed to the reheater for heating to a temperature of 650.degree.-850.degree. C. at a pressure not exceeding 0.1-1 Mpa. The streams of reheated and bypass steam are then merged and then mixed to form a single combined stream which is fed back to the turbine. The method enhances the cost effectiveness and reliability of the facility by reducing to zero the steam moisture once the expansion process in the turbine is complete.

대표청구항 ▼

[ What is claimed is:] [1.] A method of operating a steam turbine power plant of the type including a turbine, a reheater connected to the turbine, a supply of cold steam from the turbine and a supply of reheated steam to the turbine, during rated and steady-state operating conditions of the plant,

[ What is claimed is:] [1.] A method of operating a steam turbine power plant of the type including a turbine, a reheater connected to the turbine, a supply of cold steam from the turbine and a supply of reheated steam to the turbine, during rated and steady-state operating conditions of the plant, said method comprising the steps ofdividing the supply of cold steam from the turbine into first and second flow streams;directing the first flow stream amounting to 90%-50% of the total supply from the turbine to the bypass line;directing the second flow stream amounting to 10%-50% of the total supply from the turbine to the reheater for heating to a temperature of 650.degree.-850.degree. C. at a maximum pressure of 0.1-1.0 Mpa, andcombining the first and second flow streams from the bypass line and the reheater into a single combined stream which constitutes said supply of reheated steam to the turbine.