| 摘要 |
PURPOSE:To make the recovery of heating steam by a reheater ever so easy as well as to prevent a temperature of feed water from dropping, by installing an on-off valve in piping which interconnects the reheater and a high pressure feed water heater, and also installing the on-off valve in another piping which interconnects the feed water heater at the low temperature side and the reheater through. CONSTITUTION:An atomic power generation plant consists of a reactor and a steam generator 1, a high pressure turbine 3, a reheater 5, a low pressure turbine 6, a condenser 8, etc. An on-off valve 24 is installed in piping 16 which interconnects the reheater 5 and a high pressure feed water heater 12 through. Likewise, the on-off valve 24 is also installed in another piping 22 which interconnects a low pressure feed water heater 10 and the reheater 5 through. In time of partial load operation, an on-off valve 19 opens while another on-off valve 23 closes, switching an extraction steam point from X to Y. At this time, these on-off valves 24 and 23 turn to open and close respectively whereby the accompanying steam of heating steam in the reheater 5 is led by the low temperature feed water heater 10. Doing like this, flowing of the heating steam in the reheater is also stabilized so that a reaction core is stabilized too. |
