油涡轮流道的几何参数对性能影响分析及验证  

Analysis and Verification of the Influence of the Geometrical Parameters of the Flow Passage of an Oil Turbine

作　　者：苟秋琴[1] 赖喜德[1] 张翔[1] 宋冬梅[1] 

机构地区：[1]西华大学能源与环境学院,四川成都610039

出　　处：《热能动力工程》2013年第3期229-233,320-321,共5页Journal of Engineering for Thermal Energy and Power

基　　金："流体及动力机械"省部共建教育部重点实验室项目(SBZDPY-11-7);四川省教育厅成果转化培育项目(11ZZ002);四川省教育厅青年基金资助项目(11ZB008);西华大学重点科研基金资助项目(Z1120414)

摘　　要："主油泵-油涡轮增压泵"型式的油系统已广泛应用于600 MW及以上等级大型汽轮机组。根据油涡轮各部件流道几何特点、工作原理及系统对于油涡轮流体动力性能要求,在一定假设条件下推导出油涡轮设计过程中主要几何参数与外特性的关系方程。结合某1 000 MW汽轮机组油系统研制要求设计出了两个油涡轮方案,采用CFD软件进行多方案、多工况数值模拟和性能预测,揭示了所推导出的流道几何参数对油涡轮流体动力性能影响关系。通过油系统试验获得了两个方案的外特性,验证性能预测的可靠性,进一步证明分析方法的可行性,为完善这类油涡轮的设计方法奠定了一些基础。'Main oil pump-oil turbine-based booster pump'type oil systems have been widely used in 600 MW and above class large-sized steam turbine units.In the light of the geometrical features and the working principle of the flow passages of various parts and components of an oil turbine and requirements of the system for the fluid dynamic performance of the oil turbine,under certain presumption conditions,the correlation equations between the main geometrical parameters and the external characteristics of the oil turbine during its design stage were derived.In combination with the requirements for development of the oil system of a 1000 MW steam turbine unit,two versions of the oil turbine were designed and the CFD software was employed to conduct a numerical simulation of multiple versions and operating conditions,and performance prediction to reveal the relationship of the geometrical parameters of the flow passages influencing the fluid dynamic performance of the oil turbine thus derived.Through the test of the oil system,the external characteristics of the two versions were obtained and the reliability in predicting the performance was verified.It has further proven that the analytic method is feasible,thus laying a foundation for improving the methods for designing the oil turbine and its kind.

关 键 词：汽轮机组 油涡轮 几何参数 性能预测 

分 类 号：TK263[动力工程及工程热物理—动力机械及工程]