结构参数对提升阀性能的影响
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摘要
针对电站锅炉中蒸汽吹灰器低能耗、高效率的要求,基于浸入实体方法,研究了提升阀阀座入口收缩角α及出口扩大角β对提升阀开启过程动态特性的影响,获得了不同收缩角及不同扩大角所对应的流量特性曲线。结果表明:α由20°增大至50°时,阀门小开度下的出口流量增加了23%;β由0°增大至15°时,阀门大开度下出口流量增加了56%;结构允许范围内,增大收缩角可提高阀门小开度下的流量,增大扩大角可提高阀门大开度的流量。
For the requirements that steam soot blowers of utility boiler should have high efficiency and low cost,based on immersed solid method,the influences of shrinkage angleαand expansion angleβon the opening dynamic characteristics were studied,and the flow curves of different shrinkage angles and different enlargement angles were obtained.The results show that flow rate increases 23% at the small opening whenαincreases from 20° to 50°,flow rate increases 56% at the large opening whenβincreases from 0° to 15°.Increasing shrinkage angle may improve the flow rate at the small opening,and increasing expansion angle may improve the flow rate at the large opening within the ranges of the structure.
For the requirements that steam soot blowers of utility boiler should have high efficiency and low cost,based on immersed solid method,the influences of shrinkage angleαand expansion angleβon the opening dynamic characteristics were studied,and the flow curves of different shrinkage angles and different enlargement angles were obtained.The results show that flow rate increases 23% at the small opening whenαincreases from 20° to 50°,flow rate increases 56% at the large opening whenβincreases from 0° to 15°.Increasing shrinkage angle may improve the flow rate at the small opening,and increasing expansion angle may improve the flow rate at the large opening within the ranges of the structure.
引文
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[3]杨卫娟,周俊虎,刘建忠,等.600MW机组锅炉吹灰器优化投用分析[J].热力发电,2005(1):24-26.YANG Weijuan,ZHOU Junhu,LIU Jianzhong,et al.Analysis of Sootblowing Optimization for Boiler for 600MW Unit[J].Thermal Power Generation,2005(1):24-26.
[4]ANSYS Inc.Release 15.0Documentation for ANSYS[G].Canonsburg,PA,USA,ANSYS Inc.,2015.
[5]谢龙汉,赵新宇,张炯明.ANSYS CFX流体分析及仿真[M].北京:电子工业出版社,2010.XIE Longhan,ZHAO Xinyu,ZHANG Jiongming.ANSYS CFX Fluid Analysis and Simulation[M].Beijing:Publishing House of Electronics Industry,2010.
[6]郭昌盛,林腾蛟,吕和生,等.基于浸入固体法的湿式离合器调压阀流场数值仿真[J].机械研究与应用,2013(3):1-3.GUO Changsheng,LIN Tengjiao,LYU Hesheng,et al.Numerical Simulation of Fluid in the Pressure Regulating Valve of Wet Clutch Based on Immersed Solids Method[J].Mechanical Research&Application,2013(3):1-3.
[7]纪兵兵,陈金梅.ANSYS ICEM CFD网格划分技术实例详解[M].北京:水利水电出版社,2012.JI Bingbing,CHEN Jinmei.ANSYS ICEM CFD Meshing Technology Example[M].Beijing:China Water&Power Press,2012.
[8]李树勋,王虎斌,范宜霖,等.氮气式水击泄压阀初启阶段动态特性研究[J].华中科技大学学报(自然科学版),2016,44(7):10-13.LI Shuxun,WANG Hubin,FAN Yilin,et al.Study on Dynamic Characteristics of Nitrogen Surge Relief Valve and in Opening Process[J].Journal of Huazhong University of Science and Technology(Natural Science),2016,44(7):10-13.
[9]SONG X G,CUI L,PARK Y C.Three-dimensional CFD Analysis of Spring-loaded Pressure Safety Valve from Opening to Re-closure[C]//Proceedings of the ASME 2010Pressure Vessels and Piping Division/K-PVP Conference.Washington DC:ASME,2010:295-303.
[10]刘亚俊,唐电,魏华刚.清洗机斜盘轴向柱塞泵流道的流场仿真与结构优化设计[J].中国机械工程,2013,24(17):2358-2361.LIU Yajun,TANG Dian,WEI Huagang.Flow Field Simulation and Structure Optimal Design for Passage in Swash Plate Axial Piston Pump of Pressure Washer[J].China Mechanical Engineering,2013,24(17):2358-2361.
[11]李树勋,范宜霖,叶琛,等.基于改进设计的平衡阀开孔型线优化及试验[J].浙江大学学报(工学版),2015,49(5):908-915.LI Shuxun,FAN Yilin,YE Chen,et al.Optimization and Text for Opening Profile Line of Balance Valve Based on Improved Design[J].Journal of Zhejiang University(Engineering Science)2015,49(5):908-915.
[12]TAO G,CHEN H Y,J Y Y.Optimal Design of the Magnetic Field of a High-speed Response Solenoid Valve[J].Journal of Materials Processing Technology,2002,129(1/3):555-558.
[13]弓永军,周华,杨华勇.结构参数对先导式纯水溢流阀性能的影响[J].浙江大学学报(工学版),2006,40(5):869-873.GONG Yongjun,ZHOU Hua,YANG Huayong.Properties of Pilot Operated Water Hydraulic Relief Valve with Different Structure Parameters[J].Journal of Zhejiang University(Engineering Science),2006,40(5):869-873.