JP2018066303A5 - - Google Patents

Claims (11)

Steam turbine comprising a turbine rotor rotating around an axially extending rotary shaft, an inner casing accommodating the turbine rotor, and an outer casing accommodating the inner casing and having an exhaust port in the lateral direction When,
A condenser disposed laterally of the outer casing and supplied with steam from the exhaust port;
A turbine pedestal supporting the outer casing;
A first anchor member fixed to at least a part of the surface of the outer casing;
A second anchor member fixed to at least a part of the turbine pedestal and in contact with the first anchor member to suppress lateral displacement of the outer casing;
Equipped with
The outer casing has an outer surface that intersects a first axis parallel to the rotation axis,
The surface of the outer casing to which the first anchor member is fixed includes the outer surface,
An opening in which at least a portion of the turbine rotor is disposed is provided in the outer surface,
The outer side surface has a cone portion disposed around the opening and recessed toward the inner space side of the outer casing,
The first anchor member is fixed to the cone portion.
Steam turbine system. In the lateral direction, at least a portion of the first anchor member is arranged at the same position as the rotation axis,
The steam turbine system according to claim 1. A support member fixed to the cone portion;
The first anchor member is fixed to an end of the support member in the axial direction.
The steam turbine system according to claim 1 . The support member is in the form of a plate elongated in the lateral direction.
The steam turbine system according to claim 3 . The support member has a recess at the end in the axial direction,
The first anchor member is fixed to the inner surface of the recess.
The steam turbine system according to claim 4 . The dimension of the first anchor member in the axial direction is smaller than the dimension of the first anchor member in the lateral direction,
The steam turbine system according to any one of claims 1 to 5. The outer casing has a lower surface,
The surface of the outer casing to which the first anchor member is fixed includes the lower surface.
The steam turbine system according to any one of claims 1 to 6. The plurality of first anchor members are provided in the axial direction,
The steam turbine system according to claim 7 . The outer casing has a bottom surface facing the inner casing,
A third anchor member fixed to at least a part of the bottom surface of the outer casing;
A fourth anchor member fixed to at least a part of the inner casing and in contact with the third anchor member to suppress lateral displacement of the inner casing;
The steam turbine system according to claim 7 or claim 8 comprising a. A rib fixed to the bottom surface,
And a reinforcing plate facing the rib and a gap and fixed to the bottom surface,
The third anchor member is fixed to each of the rib and the reinforcing plate.
The steam turbine system according to claim 9 . The first anchor member and the third anchor member are disposed at the same position in the axial direction and the lateral direction.
The steam turbine system according to claim 9 or 10 .