Abstract:Orthogonal experiments were used to optimize the vaned diffuser of a boiler water circulating pump in the paper. The inletvane angle, diffusion angle, and throat area were selected as three factors in orthogonal experimental design. Each factor was subject to three levels, resulting in nine experimental designs. Fluid dynamics in every experimental design was calculated and analyzed by using CFD method. The performances of nine experimental designs were compared each other and a range analysis was conducted on the performances of nine experimental designs. The results showed that selected design factors played an important but different role in determining the characteristics of the pump.The three factors are in a rank such as inlet blade angel>throat area>diffusion angle to influence the pump characteristics from the most important to the least important.Specially, the inlet blade angle has a greater influence on the head than on the efficiency, however, the rest have an equal influence on both the head and the efficiency. According to the results of orthogonal experimental designs, the optimal design should be 16.2° inlet blade angle, 8° diffusion angle and 37×50 mm2 throat area.Since the predicted performance of the pump with original diffuser was in agreement with the measurement, the simulation data of nine experimental designs are accurate.It can be concluded that orthogonal experimental design method is applicable in the design of vaned-diffuser of boiler water circulating pump. By adjusting the primary and secondary important factors, the pump performance can be improved to provide areliable support toboiler water circulation in thermal power plants.
段小辉*, 孔繁余, 赵瑞杰, 刘莹莹, 谈倩艳. 基于正交试验的炉水循环泵导叶优化设计[J]. 排灌机械工程学报, 2018, 36(7): 580-586.
DUAN Xiaohui*, KONG Fanyu, ZHAO Ruijie, LIU Yingying, TAN Qianyan. Optimization analysis of vaned-diffuser of boiler water circulating pump based on orthogonal experiment. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(7): 580-586.
[1]卓宁. 炉水循环泵电机冷却系统设计特点[J]. 广西电力,2011(4):36-38. ZHUO Ning.Characteristics on motor cooling system design of boiler water circulating pump [J]. Guangxi po-wer, 2014(4):36-38.(in Chinese)[2]宁国睿. 炉水循环泵不同运行工况中的压差变化分析[J]. 发电设备,2010(2):116-119. NING Guorui. Pressure difference analysis of boiler water circulating pump in different conditions[J]. Power equipment, 2010(4):116-119.(in Chinese)[3]马燕敏. 炉水循环泵运行的安全性与经济性分析[J]. 上海电力,2008(1):9-11. MA Yanmin. Safety and economy analysis of boiler water circulating pump operation[J]. Power in Shanghai, 2008(1): 9-11.(in Chinese)[4]钱涛,陈红勋,梁成鹏. 基于CFD的潜液式液化天然气泵导叶设计[J].上海大学学报(自然科学版), 2016,22(5):606-615. QIAN Tao, CHEN Hongxun, LIANG Chenpeng. Design of liquefied natural gas submerged pump guide vane based on CFD[J]. Journal of Shanghai University(natural science edition),2016,22(5):606-615.(in Chinese)[5]马希金,包春辉.导叶叶片数对轴流式油气混输泵内部非定常流场的影响[J].流体机械,2017,45(5):36-41. MA Xijin, BAO Chunhui. Effect of guide vane number on unsteady flow in axial-flow oil-gas multiphase pump[J]. Fluid machinery, 2017,45(5):36-41.(in Chinese)[6]任露泉. 回归设计及其优化[M]. 北京:科学出版社,2009:459-483.[7]袁丹青,石荣,韩泳涛,等. 深井离心泵新型空间导叶设计及优化[J].江苏大学学报(自然科学版), 2015,36(6):661-665. YUAN Danqing, SHI Rong, HAN Yongtao, et al. Design of optimization of new-type space guide vanes for deep-well pump[J]. Journal of Jiangsu University(natu-ral science edition),2015,36(6):661-665.(in Chinese)[8]ZHOU Ling, SHI Weidong, LU Weigang, et al. Nume-rical investigations and performance experiments of a deep-well centrifugal pump with different diffuser[J]. Journal of fluids engineering, 2012,134(7):071102.[9]沈艳宁,袁寿其,陆伟刚, 等. 复合叶轮离心泵数值模拟正交试验设计方法[J]. 农业机械学报,2010,41(9):22-26. SHEN Yanning,YUAN Shouqi, LU Weigang,et al. Numerical simulation orthogonal experiment design method for compound impeller centrifugal pump[J]. Transactions of the CSAM, 2010,41(9):22-26.(in Chinese)[10]王秀勇,黎义斌,齐亚楠, 等..基于正交试验的核主泵导叶水力性能数值优化[J].原子能科学技术,2015,49(12):2181-2188. WANG Xiuyong, LI Yibin, QI Yanan, et al. Numerical optimization on guide vane hydraulic performance of nuclear main pump based on orthogonal test[J]. Atomic anergy science and technology, 2015,49(12):2181-2188.(in Chinese)[11]ZHOU Ling, SHI Weidong, WU Suqing, et al. Performance optimization in a centrifugal pump impeller by orthogonal experiment and numerical simulation[J]. Advances in mechanical engineering,2013, [12]马中强,张生昌,马艺,等.基于正交设计法的中比转速泵无过载优化设计[J].流体机械, 2015,43(10):42-46,83. MA Zhongqiang, ZHANG Shengchang, MA Yi, et al. Non-overload optimization design of medium specific speed pump based on orthogonal test[J]. Fluid machi-nery, 2015,43(10):42-46,83.(in Chinese)[13]丛小青,周日,韩泳涛,等. 基于CFX正交试验的深井离心泵导叶的优化设计[J]. 流体机械, 2015(9):22-25,21. CONG Xiaoqing,ZHOU Ri,HAN Yongtao, et al. Optimization design of guide vane of deep well centrifugal pump based on CFX orthogonal test[J]. Fluid machi-nery, 2015(9):22-25,21.(in Chinese)[14]FRANCIS Quail, THOMAS Scanlon, MATTHEW Stickland. Design optimization of a regenerative pump using numerical and experimental techniques[J]. Internatio-nal journal of numerical methods for heat & fluid flow, 2011,21(1):95-111.[15]孔繁余,邱宁,高翠兰, 等. 基于数值模拟的微型溴化锂屏蔽泵的性能分析[J].农业工程学报,2011,27(10):56-60. KONG Fanyu, QIU Ning, GAO Cuilan,et al. Analysis of the performance of the micro lithium bromide shield pump based on numerical simulation[J]. Transactions of the CSAE, 2011,27(10):56-60.(in Chinese)[16]杨魏,雷晓宇,张志民, 等. 基于载荷分布的潜水轴流泵叶轮与导叶水力设计[J].农业机械学报, 2017, 48(11): 179-187. YANG Wei, LEI Xiaoyu, ZHANG Zhimin, et al. Hydraulic design of submersible axial-flow pump based on blade loading distributions[J]. Transactions of the CSAM, 2017,48(11):179-187.(in Chinese)[17]ANDERSON H H. The area ratio system[J].World pumps, 1984(6):201-211.[18]孔繁余,宿向辉,陈浩, 等. 离心泵径向导叶正叶片参数的优化设计[J].农业工程学报,2012,28(23):40-45. KONG Fanyu, SU Xianghui, CHEN Hao, et al. Optimum design of the parameters of the radial guide vane of the centrifugal pump[J]. Transactions of the CSAE,2012,28(23):40-45.(in Chinese)[19]关醒凡.现代泵理论与设计[M].北京:中国宇航出版社,2011.