水利水电科技进展2016，Vol.36Issue(3)：62-67,6.DOI:10.3880/j.issn.1006-7647.2016.03.013
水电机组推力轴承镜板泵及油循环冷却系统的水力优化设计
Hydraulic optimization design of runner-pump and oil circulating and cooling system for thrust bearing of hydroelectric units
摘要
Abstract
In order to optimize the layout and number of holes and geometric parameters such as the section shape, area, and outlet pipe diameter of the oil bath in hydrodynamic design of a runner-pump for the thrust bearing of hydroelectric units, a method for performance prediction and optimization design suitable for the flow passages of the runner-pump is presented in this paper. Through combination of different geometric parameters, the influence of the size and shape of the main flow passage components on hydrodynamic performance of the runner-pump was analyzed using the performance prediction method based on multi-condition numerical simulations. In this way, a hydrodynamic optimization design method for the runner-pump based on cooperation throughout the circulation system, which can improve the performance and reliability of the hydrodynamic system for self-circulating system design, is proposed. The results show that, compared with the original runner-pump, the average head is increased by 4m, the average efficiency is increased by 5. 5%, and the H-Q curve can guarantee better stability of the system under varying condition operation for the optimized runner-pump under the same test conditions.关键词
水电机组/推力轴承/循环冷却系统/镜板泵/集油槽/优化设计/性能预测Key words
hydroelectric unit/thrust bearing/circulating and cooling system/runner-pump/oil bath/optimization design/performance prediction分类
能源科技引用本文复制引用
赖喜德,张翔,陈小明,卢珍,杨仕福..水电机组推力轴承镜板泵及油循环冷却系统的水力优化设计[J].水利水电科技进展,2016,36(3):62-67,6.基金项目
国家自然科学基金(51379179) （51379179）
流体及动力机械四川省科技创新研究团队项目(2011JTD0016) （2011JTD0016）
