摘要
燃气轮机作为天然气集中式发电、分布式发电以及基于天然气的多能互补系统的核心动力设备,其对于能源电力行业有着重要意义。压气机作为燃气轮机的三大主要部件之一,其性能和可靠性直接决定燃气轮机能否安全高效运行。从气动设计体系和叶片设计技术两方面对压气机气动设计技术的进展和现状进行综述研究。在气动设计体系方面,已经从基于二维通流设计的准三维设计体系发展到目前三维计算流体力学(computational fluid dynamics,CFD)技术与通流相结合的三维气动设计体系。在叶片设计方面,从传统的系列叶型和二维叶型优化发展到了全三维叶片和端壁造型技术。研究还指出,各三维设计元素对多级压气机内部三维流场的影响是非线性的,压气机三维优化设计应当考虑全局,通过迭代过程获得各三维设计元素的最佳组合,从而提高压气机的效率和裕度。
As the core device of centralized,distributed power generation and multienergy complementary system based on natural gas,gas turbine is of great significance to the energy and electric power industry.As one of three main parts of gas turbine,compressor＇s performance and reliability directly determine whether gas turbine will operate safely and efficiently.This paper reviews the progress of the compressor aerodynamic design in two aspects,the aerodynamic design system and blade design technology.The aerodynamic design system has developed form quasi-three-dimensional design system based on two-dimensional throughflow design,to three-dimensional design system which combines three-dimensional computational fluid dynamics（CFD）technology with throughflow design.The blade design technology has developed from the traditional series profile and two-dimensional profile optimization to full three-dimensional blade and end-wall contouring technology.In this study,it is noted that the impact of various three-dimensional design features on the three-dimensional internal flow field of the multistage compressor is nonlinear,thus the three-dimensional optimization of compressor should be taken into full consideration.The best combination of the design elements in three-dimensional design needs to be obtained through an iteration process,so as to improve the efficiency and stall-margin of the compressor.
作者
宋寅
SONG Yin(Thermal Power Technology Research Institute,China Datang Corporation Science and Technological Research Institute Co Shijingshan District,Beijing 100040,China)
出处
《分布式能源》
2018年第3期1-9,共9页
Distributed Energy
关键词
燃气轮机
高负荷压气机
通流设计
叶片优化
gas turbine
highly-loaded compressor
throughflow design
blade profile optimization
