Heat shield segment for a stator of a gas turbine
First Claim
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1. A gas turbine comprising:
- a turbine housing;
a rotatable turbine rotor having a plurality of turbine blades; and
at least one heat shield segment for a stator disposed radially between the rotor and the housing and attached to the housing, the at least one heat shield segment having a profile with a curved section in at least one region in an axial direction of the gas turbine and having a radial outer surface and including;
a first boss extending in a circumferential direction of the gas turbine in a region of the curved section and in a first end area in the circumferential direction disposed on the radial outer surface;
a rib disposed at the first end area extending at least partially in a longitudinal direction of the gas turbine, wherein the first boss protrudes from the rib in the circumferential direction disposed on the radial outer surface; and
a second boss extending in the circumferential direction in a region of the curved section and in a second area opposite to the first end area disposed on the radial outer surface, wherein the profile includes a two-stepped form in the circumferential direction in an area of the first boss, wherein a first step extends from the radial outer surface to the first boss and a second step extends from the first boss to the rib.
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Abstract
A gas turbine includes a turbine housing; a rotatable turbine rotor with turbine blades; and at least one heat shield segment for a stator. The heat shield segment is disposed radially between the rotor and the housing and attached to the housing and has a profile with a curved section in at least one region in an axial direction of the gas turbine and a radial outer surface. The heat shield segment includes a rib, a first boss, and a second boss disposed on the radial outer surface.
15 Citations
14 Claims
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1. A gas turbine comprising:
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a turbine housing; a rotatable turbine rotor having a plurality of turbine blades; and at least one heat shield segment for a stator disposed radially between the rotor and the housing and attached to the housing, the at least one heat shield segment having a profile with a curved section in at least one region in an axial direction of the gas turbine and having a radial outer surface and including; a first boss extending in a circumferential direction of the gas turbine in a region of the curved section and in a first end area in the circumferential direction disposed on the radial outer surface; a rib disposed at the first end area extending at least partially in a longitudinal direction of the gas turbine, wherein the first boss protrudes from the rib in the circumferential direction disposed on the radial outer surface; and a second boss extending in the circumferential direction in a region of the curved section and in a second area opposite to the first end area disposed on the radial outer surface, wherein the profile includes a two-stepped form in the circumferential direction in an area of the first boss, wherein a first step extends from the radial outer surface to the first boss and a second step extends from the first boss to the rib. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A heat shield segment for a stator of a gas turbine disposed radially between a turbine rotor and turbine housing and attached to the housing having a profile with a curved section in at least one region in an axial direction of the gas turbine and having a radial outer surface comprising:
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a first boss extending in a circumferential direction of the gas turbine in a region of the curved section and in a first end area in the circumferential direction disposed on the radial outer surface of the at least one heat shield segment; a rib disposed at the first end area extending at least partially in a longitudinal direction of the gas turbine, wherein the first boss protrudes from the rib in the circumferential direction disposed on the radial outer surface; and a second boss extending in the circumferential direction in a region of the curved section and in a second area opposite to the first end area disposed on the, radial outer surface, wherein the profile includes a two-stepped form in the circumferential direction in an area of the first boss, wherein a first step extends from the radial outer surface to the first boss and a second step extends from the at least one boss to the rib. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification
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Current AssigneeAnsaldo Energia IP UK Limited (Ansaldo Energia SPA)
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Original AssigneeAlstom Technology Ltd. (Alstom SA)
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InventorsKhanin, Alexander, Kurganov, Igor, Vorontsov, Sergey, Shunin, Anatoly
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Primary Examiner(s)Look, Edward
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Assistant Examiner(s)MCDOWELL, LIAM J
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Application NumberUS12/645,880Publication NumberTime in Patent Office881 DaysField of Search415/173.1US Class Current415/173.1CPC Class CodesF01D 9/06 Fluid supply conduits to no...F05D 2240/11 Shroud seal segmentsF05D 2260/231 Preventing heat transfer
