Alston & Bird LLP
Nozzle chamber warming-up structure for a steam turbine
 A nozzle chamber warming-up structure comprises a ring mounted about a rotor of the turbine and defines an annular space surrounding the rotor. The annular spaced is divided by dividing walls into a plurality of steam chambers distributed circumferentially about the rotor, including first ad second upper steam chambers and at least one lower steam chamber. The dividing wall have holes such that steam supplied into the first upper steam chamber flows through the hole in one of the dividing walls into the one or more lower steam chambers, and then flows through The hole in another of the dividing walls into the second upper steam chamber. The steam that flows circumferentially around the ring and warms up the nozzle chamber uniformly. 
Mitsubishi Heavy Industries, Ltd.
F F F
F01D F01D F01D
inventional inventional inventional
Takashi Ryotaro
Nakano Magoshi