LOW PRESSURE STEAM CONTROL METHOD OF STEAM DRIVING PLANT HAVING BACK PRESSURE TURBINE AND CONDENSATE TURBINE

摘要

PURPOSE: To operate a back pressure turbine to its maximum capacity as possible even if the using amount of low pressure steam is reduced at its using place, when the back pressure turbine and a condensate turbine are operated while using high pressure steam, and low pressure steam which is generated the back pressure turbine is supplied to the using place. ;CONSTITUTION: When the using amount of low pressure steam in using place 10 is reduced, its excessive amount is regulated by a steam flow amount regulating valve 6 which is arranged in a connecting piping 16 for connecting a low pressure piping 12 and an extraction piping 15 to each other, and excessive low pressure steam is supplied to the intermediate step of a deaerator 7 and a condensate turbine 4 through the extraction piping 15, thereby, it is possible to ensure the using place of low pressure steam which is generated from a back pressure turbine 1.;COPYRIGHT: (C)1995,JPO