Gas turbine shroud structure
AssigneeIshikawajima-Harima Heavy Industries Co., Ltd.
InventorsNobuyuki Suzumura, Takeshi Nakamura, Tadashi Natsumura, Takahito Araki, Kenichiro Watanabe
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Abstract
There is disclosed a gas turbine shroud structure comprising: a shroud support component 12 attached to an inner surface of a gas turbine casing 3; a shroud segment 14 divided in a peripheral direction and supported by the inner surface of the shroud support component; and a heat-resistant restricting spring 18 held between the shroud segment and shroud support component to urge the shroud segment inwards in a radial direction. The shroud segment 14 is formed of a ceramic composite material, and includes a coating layer 15 having heat insulation and impact absorption effect on an inner surface of the segment.
Claims6
A gas turbine shroud structure comprising:
- a shroud support component attached to an inner surface of a gas turbine casing;
- a shroud segment divided in a peripheral direction and supported by the inner surface of the shroud support component;
- and a heat-resistant restricting spring held between the shroud segment and the shroud support component to urge the shroud segment inwards in a radial direction,
- wherein the shroud segment is formed of a ceramic composite material, and includes a coating layer having heat insulation and impact absorption effect on an inner surface of the segment,
- wherein the ceramic composite material comprises laminated and stitched two-dimensional fabric, or fabric in which a fiber is three-dimensionally oriented.
A gas turbine shroud structure comprising:
- a shroud support component attached to an inner surface of a gas turbine casing;
- a shroud segment divided in a peripheral direction and supported by the inner surface of the shroud support component;
- and
- a heat-resistant restricting spring held between the shroud segment and the shroud support component to urge the shroud segment inwards in a radial direction,
- wherein the shroud segment is formed of a ceramic composite material, and includes a coating layer having heat insulation and impact absorption effect on an inner surface of the segment,
- wherein the ceramic composite material comprises laminated and stitched two-dimensional fabric, or fabric in which a fiber is three-dimensionally oriented,
- wherein the coating layer is a ceramic including pores or a ceramic composite material, wherein each of the ceramic including pores and the ceramic composite material is formed by ceramic containing one or more main components selected from the group consisting of mullite, SiC, Al2O3, zircon, SiO2, ZrC, and HfC.
Dependencies are inferred from the claim text.