强化换热的柱肋、透平叶片和燃气轮机
By employing a column rib structure with a gradually changing cross-sectional shape in the turbine blades of gas turbines, combining rhomboid and elliptical features, the problems of poor cooling effect and large pressure loss of traditional column ribs are solved, achieving efficient cooling and low loss.
CN117738748BActive Publication Date: 2026-07-17CHINA UNITED GAS TURBINE TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA UNITED GAS TURBINE TECH CO LTD
- Filing Date
- 2023-11-07
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Traditional cylindrical rib structures have limited cooling effects on gas turbine blades, failing to meet cooling requirements in high-temperature environments, and also suffer from significant pressure loss.
Method used
The column rib structure with a gradually changing cross-sectional shape, combined with rhomboid and elliptical features, enhances the heat exchange capacity of the cooling channel side walls and reduces pressure loss in the mainstream area through a smooth transition, making it an easy-to-manufacture structure.
Benefits of technology
It improves cooling efficiency by at least 15%, reduces pressure loss by at least 33%, and is easy to manufacture and install.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN117738748B_ABST
Abstract
本发明公开了一种强化换热的柱肋、透平叶片和燃气轮机。柱肋包括第一段和第二段，第一段在其轴向上的具有相对的第一端和第二端，第一端的形状为菱形，第二端的形状为椭圆形，第一段的形状从第一端向第二端平滑过渡，第二段在其轴向上具有相对的第三端和第四端，第三端的形状为椭圆形，第四端的形状为菱形，第二段的形状从第四端向第三端平滑过渡，第一段的第二端邻近第二段的第三端并与其相连，本发明的柱肋采用渐变截面形状，将菱形柱肋与椭圆形柱肋的优势相结合，增强了柱肋的换热能力的同时，使得冷却通道中的压力损失明显降低。第一段和第二段光滑的外周面进一步降低了柱肋在冷却流道中造成的流动损失，柱肋的拔模较为方便，制造难度较低。
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