PROBLEM TO BE SOLVED: To suppress a trouble due to the thermal contraction of an annular partitioning portion partitioning a high-pressure side turbine and a low-pressure side turbine.SOLUTION: A steam turbine installation includes: a high-pressure steam turbine 21 which rotates a rotor shaft 90 by main steam; a middle-pressure steam turbine 22 which rotates the rotor shaft 90 by reheat steam; an annular partitioning portion 23 which forms an inner peripheral surface opposite to an outer peripheral surface of the rotor shaft 90, partitions the high-pressure steam turbine 21 and the middle-pressure steam turbine 22, and forms a part of a reheat steam chamber 20d supplying steam discharged from the high-pressure steam turbine 21 to the middle-pressure steam turbine 22; a temperature sensor 23c which measures the temperature of the annular partitioning portion 23; and a control portion which controls so as to lower a number of rotations of the rotor shaft 90 when the temperature measured by the temperature sensor 23 is lower than predetermined temperature.SELECTED DRAWING: Figure 2
【課題】高圧側タービンと低圧側タービンとの間を仕切る環状仕切部が熱収縮することによる不具合を抑制する。【解決手段】主蒸気によってロータ軸90を回転させる高圧蒸気タービン21と、再熱蒸気によってロータ軸90を回転させる中圧蒸気タービン22と、ロータ軸90の外周面と対向する内周面を形成し、高圧蒸気タービン21と中圧蒸気タービン22との間を仕切るとともに、中圧蒸気タービン22へ高圧蒸気タービン21から排出された蒸気を供給する再熱蒸気室20dの一部を形成する環状仕切部23と、環状仕切部23の温度を計測する温度センサ23cと、温度センサ23cが計測する温度が所定温度を下回る場合にロータ軸90の回転数を低下させるよう制御する制御部とを備える蒸気タービン設備を提供する。【選択図】図2
STEAM TURBINE INSTALLATION, VESSEL, AND METHOD OF CONTROLLING STEAM TURBINE INSTALLATION
蒸気タービン設備、船舶、および蒸気タービン設備の制御方法
2016-07-11
Patent
Electronic Resource
Japanese