STEAM TURBINE CASING SYSTEM
First Claim
Patent Images
1. A steam turbine casing system, comprising:
- an outer casing having a casting made of a first material and having a support region; and
an inner casing, enclosed by the outer casing, for enclosing a rotor, the inner casing including a contact surface in contact with the support region, wherein the support region comprises;
a metal insert, made of a second material with a greater hot strength than the first material, that has an encased surface encased in the casting, wherein the encased surface includes, relative to a radial outward direction (ROD), a flaring portion that flares at least one of axially and circumferentially;
a support surface, in contact with the contact surface, configured in conjunction with the contact surface to maintain a separation between the inner casing and the casting; and
a guide for guiding the contact surface over the support surface.
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Accused Products
Abstract
The disclosure relates to a steam turbine outer casing that can be at least partially cast out of a first material and has a plurality of support regions adapted to support an inner casing. The outer casing can be at least one support region that has a metal insert, made of a second material, with a flaring portion for retaining the metal insert in the casting of the outer casing. The second material has a greater hot strength than the first material. The support region can include a guide for limiting the movement of the inner casing in the outer casing.
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Citations
20 Claims
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1. A steam turbine casing system, comprising:
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an outer casing having a casting made of a first material and having a support region; and an inner casing, enclosed by the outer casing, for enclosing a rotor, the inner casing including a contact surface in contact with the support region, wherein the support region comprises; a metal insert, made of a second material with a greater hot strength than the first material, that has an encased surface encased in the casting, wherein the encased surface includes, relative to a radial outward direction (ROD), a flaring portion that flares at least one of axially and circumferentially; a support surface, in contact with the contact surface, configured in conjunction with the contact surface to maintain a separation between the inner casing and the casting; and a guide for guiding the contact surface over the support surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification