Ring segment cooling structure, ring segment including same, and gas turbine
AssigneesDoosan Enerbility Co., Ltd., UIF (University Industry Foundation), Yonsei University
InventorsJeong Ju KIM, Yun Chang JANG, Hyung Hee CHO, Gyeong Ryun KIM, Jae Hyeong KIM, Hyung Joon JUN
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Abstract
A ring segment cooling structure with enhanced cooling performance, a ring segment, and a gas turbine including the same. The ring segment cooling structure includes a cooling channel and a rib turbulator. The cooling channel is formed inside a shield wall of a ring segment mounted to a casing that accommodates blades and is formed in a wavy shape so as to allow cooling air to flow through the cooling channel. The rib turbulator is installed in the wavy-shaped cooling channel.
Claims20
A ring segment cooling structure comprising:
- a wavy-shaped cooling channel formed inside a shield wall of a ring segment mounted to a casing that accommodates blades, the cooling channel allowing cooling air to flow therethrough;
- and
- a rib turbulator installed in the wavy-shaped cooling channel.
A ring segment comprising:
- a shield wall facing an inner wall of a turbine casing that accommodates blades;
- a first hook portion and a second hook portion protruding from the shield wall toward the turbine casing and coupled to the turbine casing;
- a main cavity formed between the first hook portion and the second hook portion;
- and
- a cooling structure which is formed within the shield wall and through which cooling air flows,
- wherein the cooling structure comprises:
- a wavy-shaped cooling channel which is formed within the shield wall and through which cooling air flows;
- and
- a rib turbulator installed in the wavy-shaped cooling channel.
A gas turbine comprising:
- a plurality of blades installed on a rotatable rotor disk;
- a turbine casing configured to accommodate the blades;
- and
- a plurality of ring segments coupled to the turbine casing and positioned outside the blades,
- wherein each of the ring segments comprises:
- a shield wall facing an inner wall of the turbine casing that accommodates the blades;
- a first hook portion and a second hook portion protruding from the shield wall toward the turbine casing and coupled to the turbine casing;
- a main cavity formed between the first hook portion and the second hook portion;
- and
- a cooling structure which is formed within the shield wall and through which cooling air flows,
- wherein the cooling structure comprises:
- a wavy-shaped cooling channel which is formed within the shield wall and through which cooling air flows;
- and
- a rib turbulator provided in the wavy-shaped cooling channel.
Dependencies are inferred from the claim text.