gas turbine engine
JP7873755B1Active Publication Date: 2026-06-12KAWASAKI JUKOGYO KK
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- KAWASAKI JUKOGYO KK
- Filing Date
- 2025-04-30
- Publication Date
- 2026-06-12
AI Technical Summary
Technical Problem
The thermal expansion of the turbine case in a gas turbine engine leads to an increased gap between the turbine rotor blades and the turbine case, resulting in inefficient energy transfer.
Method used
A cooling structure is implemented to introduce cooling air into the space between the turbine case and a cowl, using a bypass passage to cool the turbine case and suppress thermal expansion, thereby maintaining a minimal gap.
Benefits of technology
The cooling structure effectively reduces the expansion of the gap between the turbine blades and the turbine case, enhancing energy transfer efficiency by maintaining a consistent distance.
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Smart Images
Figure 0007873755000001_ABST
Abstract
The present invention provides a gas turbine engine that can suppress the expansion of the gap between the turbine blades and the turbine case due to thermal expansion. [Solution] A gas turbine engine according to one embodiment includes a rotating shaft extending in the front-rear direction, a compressor for compressing air taken in from the outside, a combustor for burning a mixture of air compressed by the compressor and fuel, a turbine including a plurality of turbine blades that are rotationally driven around the rotating shaft by the combustion gas generated in the combustor, a turbine case housing the turbine, a cowl located radially outward from the turbine case and radially opposite to the turbine case, and at least one inlet for introducing cooling air from the space radially outward from the cowl into the cooling space which is the space between the turbine case and the cowl.
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