Steam turbine
AssigneeKabushiki Kaisha Toshiba
InventorsMasataka Kikuchi, Toru Takahashi
Life of this patent
Estimating the term…
Abstract
A steam turbine includes a turbine casing, in which a turbine rotor is accommodated so as to extend along a direction of flow of steam, and a plurality of turbine pressure sections are mounted to the turbine rotor, which includes, in combination, at least two or more of a turbine high pressure portion, a turbine intermediate pressure portion and a turbine low pressure portion. The turbine casing is divided into two casing sections, each of the divided turbine casing sections being further divided into a turbine casing upper half and a turbine casing lower half, and the turbine casing lower halves of the divided turbine casing sections being connected to each other by a fastening member such as stud bolt inserted from a side of the turbine low pressure portion.
Claims26
A steam turbine comprising:
- a turbine casing;
- a turbine rotor accommodated in the turbine casing so as to extend along a direction of flow of steam;
- and
- a plurality of turbine pressure sections mounted to the turbine rotor including, in combination, at least two or more of a turbine high pressure portion, a turbine intermediate pressure portion and a turbine low pressure portion, said turbine casing being divided into two casing sections, each of said divided turbine casing sections being further divided into a turbine casing upper half and a turbine casing lower half, the turbine casing lower halves of the divided casing sections being connected to each other by a fastening member inserted from a side of said turbine lower pressure portion.
A steam turbine comprising:
- a turbine casing;
- a turbine rotor accommodated in the turbine casing so as to extend along a direction of flow of steam;
- and
- a plurality of turbine pressure sections to be mounted to the turbine rotor including, in combination, at least two or more of a turbine high pressure portion, a turbine intermediate pressure portion and a turbine low pressure portion,
- wherein said turbine casing is divided into two casing sections, each of said divided turbine casing sections being further divided into a turbine casing upper half and a turbine casing lower half, said turbine casing upper and lower halves of the divided turbine casing sections being formed with bolt insertion holes and flanged portions respectively, at least one of said flanged portions of said turbine casing upper and lower halves being formed with a steam passage connected to the bolt insertion holes and extending from the turbine high pressure portion to the turbine low pressure portion.
A steam turbine comprising:
- a turbine casing;
- a turbine rotor accommodated in the turbine casing so as to extend along a direction of flow of steam;
- and
- a plurality of turbine pressure sections to be mounted to the turbine rotor including, in combination, at least two or more of a turbine high pressure portion, a turbine intermediate pressure portion and a turbine low pressure portion,
- wherein said turbine casing is divided into two casing sections, each of said divided turbine casing sections being further divided into a turbine casing upper half and a turbine casing lower half, said turbine casing lower halves of the divided turbine casing sections being formed with steam inlets.
Dependencies are inferred from the claim text.