Steam turbine and construction method of steam turbine
AssigneesMitsubishi Heavy Industries Compressor Corporation, Sanyu Industries, Ltd.
InventorsAkito Kunimoto, Keita Mori
Life of this patent
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Abstract
A steam turbine 1 includes a turbine body 11 which includes a rotor 5 which is configured to rotate around an axis Ac, and a casing 6 which covers the rotor 5 to form a flow path through which steam flows in an axis Ac direction, together with the rotor 5, a thermal insulation member 12 which is provided to be in contact with an outer surface of the casing 6 in a high-pressure side region 61 out of the high-pressure side region 61 and a low-pressure side region 62 of the steam in the axis Ac direction of the casing 6, and a soundproof cover 13 which covers the low-pressure side region 62 out of the high-pressure side region 61 and the low-pressure side region 62 via a space between the outer surface of the casing 6 and the soundproof cover 13.
Claims11
A steam turbine comprising:
- a turbine body which includes a rotor which is configured to rotate around an axis, and a casing which covers the rotor to form a flow path through which steam flows in an axial direction in which the axis extends, together with the rotor;
- a thermal insulation member which is provided to be in contact with an outer surface of the casing in a high-pressure side region out of the high-pressure side region and a low-pressure side region in which pressure of the steam is different from each other of the casing in the axial direction;
- and
- a soundproof cover which covers the casing in the low-pressure side region out of the high-pressure side region and the low-pressure side region via a space between the outer surface of the casing and the soundproof cover.
A construction method of a steam turbine comprising:
- a step of preparing a turbine body which includes a rotor which is configured to rotate around an axis, and a casing which covers the rotor to form a flow path through which steam flows in an axial direction, together with the rotor, a thermal insulation member which is provided to be in contact with an outer surface of the casing in a high-pressure side region out of the high-pressure side region and a low-pressure side region in which pressure of the steam is different from each other of the casing in the axial direction, and a soundproof cover which covers the casing in the low-pressure side region out of the high-pressure side region and the low-pressure side region via a space between the outer surface of the casing and the soundproof cover;
- a thermal insulation member attachment step of attaching the thermal insulation member to the outer surface in the high-pressure side region of the casing;
- and
- a soundproof cover attachment step of attaching the soundproof cover with a space between the outer surface and the soundproof cover in the low-pressure side region of the casing.
Dependencies are inferred from the claim text.