Pressure balance die expansion joint null of exhaust air

摘要

PURPOSE: To prevent the damage of bellows caused by the large amplitude of the shaking of an expansion joint resulting from resonance during the operation of a turbine in the case where the natural frequency of the bellows on a steam flowing side provided in a pressure balance type expansion joint fitted to an exhaust connecting pipe to connect the exhaust port of a steam turbine with the steam inlet of a condenser is near the number of revolutions of a turbine rotor. ;CONSTITUTION: An amplitude limiter 21 is attached to the attaching part of bellows 14 provided in a pipe on the steam flowing side of a pressure balance type expansion joint 7 fitted to an exhaust connecting pipe 6 to restrict the size of the amplitude of shaking caused by the resonance of the bellows 14 for preventing the damage of the bellows 14 during the operation of a turbine.;COPYRIGHT: (C)1994,JPO&Japio