高效宽负荷叶型气动性能研究  

Analysis on Aerodynamic Performances of Advanced Profiles at a Wide Load Range Condition for Steam Turbine

作　　者：刘云锋[1] 祁静 李宇峰[1] 冯永志[1] LIU Yun-feng;QI Jing;LI Yu-feng;FENG Yong-zhi(Harbin Turbine Company Limited,Harbin 150046,China;Harbin Electric Company Limited,Harbin 150028,China)

机构地区：[1]哈尔滨汽轮机厂有限责任公司,哈尔滨150046 [2]哈尔滨电气股份有限公司,哈尔滨150028

出　　处：《汽轮机技术》2018年第4期276-278,共3页Turbine Technology

基　　金：国家科技支撑计划"1000MW高效宽负荷率的超超临界机组开发与应用"(2015BAA03B01-02-02)

摘　　要：针对叶片根中顶3个截面不同的安装角,设计了相应的高效宽负荷叶型,并采用数值模拟的方法,分析了叶型对负荷的适应性,重点分析了对攻角和马赫数的适应性。数值计算表明,以变工况性能较好的高效后加载叶型为母型开发的高效宽负荷叶型,可以实现机组变负荷运行时保持较高通流效率的目标,攻角变化范围为±30°、马赫数变化范围为0.2~0.6时叶型损失变化不超过0.5%。According to the variations of stagger angles between hub and shroud profiles, threes typical profiles were designed for advanced-wide-loading steam turbine. This paper analyzes aerodynamic performances of these profiles at wide-loadings, which focus on the Mach numbers and impulse angles variation. As results show, when the impulse angle change between -30° - ＋ 30° and the Mach number between 0.2 -0.6, the variation of loss coefficient factor is not exceed 0.5%. This tiny change of loss indicates advanced-wide-loading profile, based on after-load profile, can keep high efficiency at a wide load range condition for steam turbine.

关 键 词：汽轮机 叶型设计 高效宽负荷 

分 类 号：TK263.3[动力工程及工程热物理—动力机械及工程]