Design and experimental study on relief valve with permanent magnetic compression spring
SI Guo-Lei-1, YANG Feng-Yu-1, WANG Wen-Jie-2, LI Zheng-Gui-1
(1.Institute of Magnetic Physics and Magnetic Technology, Lanzhou University of Technology, Lanzhou, Gansu 730050, China; 2.Research and Development Center, Fenghuo Machinery Factory, Chengdu, Sichuan 611130, China)
Abstract：Because the helical compression spring has frequently suffered from various failures, such as fatigue fracture, corrosion cracking, relaxation, plastic deformation, permanent deformation during its operation in hydraulic components, a noncontact design concept was put forward for the relief valve by making use of permanent magnetic compression spring, and then the basic structure, working principle, electromagnetic force, stiffness characteristics for the valve were studied. Initially, a permanent magnetic compression spring was designed by means of analytical calculation and experimental validation so that the characteristics that magnetic force is superior to helical mechanical compression spring has been made full of use. Then a relief valve was constructed with the spring, eventually the valve performance was measured. The results show that the magnetic force keeps to be a near constant 70±5 N when the gap between the permanent magnet valve core and the valve base is 0.4-1.2 mm. During the step response test, the pressure fluctuation in the relief valve with permanent magnetic compression spring is 11.7%, compared with 22.8% in the valve with a helical mechanical compression spring. For the same technical specifications, the size of the valve with permanent magnetic compression spring is 37.5% smaller than one with a helical compression spring. Thus, we can make full use of the advantage of permanent magnetic compression spring in hydraulic valves, nevertheless further investigations still are on demand.
司国雷, 杨逢瑜, 王文杰, 李正贵. 永磁压缩弹簧式溢流阀的设计与试验研究[J]. 排灌机械工程学报, 2012, 30(2): 214-218.
SI Guo-Lei, YANG Feng-Yu, WANG Wen-Jie, LI Zheng-Gui. Design and experimental study on relief valve with permanent magnetic compression spring. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(2): 214-218.
参考文献(References)［1］高希彦, 王燕, 方武. 数值仿真在泵阀参数优化中的应用［J］. 排灌机械工程学报,2010,28(1):63-67.Gao Xiyan, Wang Yan, Fang Wu. Application of numerical simulation in optimizing parameters of reciprocating pump valve［J］. Journal of Drainage and Irrigation Machinery Engineering,2010, 28(1):63-67.(in Chinese)［2］邱文鹏,常序华,王仁智. 圆柱螺旋弹簧氢脆断裂失效分析［J］. 金属制品,2007,33(1):24-27.Qiu Wenpeng,Chang Xuhua,Wang Renzhi. Hydrogen brittle fracture failure analysis of column spiral spring［J］. Steel Wire Products,2007,33(1):24-27.(in Chinese)［3］杨辉,吴启梁.气门弹簧断裂的影响因素及原因分析［J］.内燃机,2010(2):37-40.Yang Hui, Wu Qiliang. The influence factor of valve spring rupture and reasons analysis［J］. Internal Combustion Engines,2010(2):37-40.(in Chinese)［4］董汉武, 高岩, 郑志军. 主汽门操纵座弹簧的断裂失效分析［J］. 机械工程材料,2007,31(1):60-62.Dong Hanwu, Gao Yan, Zheng Zhijun. Failure analysis of a spring in manipulating pedestal of main throttle valve in a power plant［J］. Materials for Mechanical Engineering, 2007,31(1):60-62.(in Chinese)［5］王其磊, 杨逢瑜, 杨倩, 等. 电磁轴承在立式高速泵中的应用［J］. 排灌机械工程学报, 2010, 28(1): 88-92.Wang Qilei, Yang Fengyu, Yang Qian, et al. Application of electromagnetic bearings in vertical highspeed pump［J］. Journal of Drainage and Irrigation Machinery Engineering, 2010, 28(1): 88-92.(in Chinese)［6］Jadwisienczak W M, Wang J, Tanaka H,et al.Optical and magnetic properties of GaN epilayers implanted with ytterbium［J］. Journal of Rare Earths, 2010,28(6):931-935.［7］Si Guolei, Yang Fengyu, Wang Wenjie, et al. Study on relief valve with permanent magnetic spring［J］. Advanced Materials Research, 2011,328／329／330:224-227.［8］Licskó Gbor, Champneys Alan, Hs Csaba. Dynamical analysis of a hydraulic pressure relief valve［J］. Lecture Notes in Engineering and Computer Science, 2009,2177(1):1820-1826.［9］Robertson W S, Kidner M R F, Cazzolato B S， et al. Theoretical design parameters for a quasizero stiffness magnetic spring for vibration isolation［J］. Journal of Sound and Vibration, 2009,326(1／2):88-103.［10］Licskó Gbor, Champneys Alan, Hs Csaba.Nonlinear analysis of a single stage pressure relief valve［J］.International Journal of Applied Mathematics,2009,39(4):286-299.［11］马吉恩,徐兵,杨华勇.轴向柱塞泵流动特性理论建模与试验分析［J］.农业机械学报,2010,41(1):188-194.Ma Jien, Xu Bing, Yang Huayong. Modelling and experiment study on fluid character of axial piston pump［J］. Transactions of the Chinese Society for Agricultural Machinery,2010, 41(1):188-194.(in Chinese)
