Numerical analysis of temperature rise by throttling and deformation in spool valve

【Author】

JI Hong,CAO Yong,WANG Zhengrong,WANG Yang College of Energy and Power Engineering,Lanzhou University of Technology,China

【Abstract】

Three-dimensional flow field,temperature field and thermal deformation of solid in spool valve with notches and without notches was calculated by using software FLUENT and ANSYS.The numerical results showed that the temperature distribution of fluid and solid was nonuniform in the spool valve.The temperature of the jet flow close to the solid wall was high,and the temperature in the center of the jet flow was low.In addition,the highest temperature located on the solid wall near to the orifice and on the wall in valve chamber impacted by the jet.The maximum deformation in spool and valve body caused by the temperature rise could come up to several microns,and there was an overall bending deformation in the spool and valve body.These two types of deformation could directly lead to the phenomenon of spool clamping.

【Keywords】

spool valve,notch,temperature rise,deformation, numerical analysis

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Total: 5 articles

  • [1] LIU Xiaohong,KE Jian,YU Lanying,WANG Guozhi(New Drive Technology Center,Southwest Jiaotong University,Chengdu 610031,China), CFD Research on Temperature Field in Radial Clearance of Hydraulic Spool Valve, Machine Tool & Hydraulics,
  • [2] JI Hong1,WANG Dong-sheng1,DING Da-li1,TAN Zheng-sheng1,LIU Xiao-ping2(1.College of Fluid Power and Control,Lanzhou Univ.of Tech.,Lanzhou 730050,China;2.Technical Research Center,Hitachi Construction Machinery Co.,Ltd,Ibaraki-ken 3000013,Japan), Calculation method of orifice area of spool valve with notches, Journal of Lanzhou University of Technology,
  • [3] Ji Hong1 Wang Dongsheng1 Shohei Ryu2 Fu Xin3(1.College of Fluid Power and Control Engineering,Lanzhou University of Technology,Lanzhou 730050,China2.Technical Research Center,Hitachi Construction Machinery Co.,Ltd.,Ibaraki-ken 3000013,Japan3.The State Key Lab.of Fluid Power Transmission and Control,Zhejiang University,Hangzhou 310027,China), Flow Control Characteristic of the Orifice in Spool Valve with Notches, Transactions of the Chinese Society for Agricultural Machinery,
  • [4] Shohei Ryu;Masami ochiai;Katsumi ueno;FU Xin;JI Hong, "Analysis of flow force in valve with notches on spool.", Proceedings of the 6th International Conference on F1uid Power Transmission and control,

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