|
|
|
| Calculation of gap between roller and valve plate for roller rotary oil pump |
| ZHANG Sheng-Chang, LIAN Jia-Di, DENG Hong-Ying, CHEN Xi-Dong, KE Yu-Long, ZHANG Yu-Lin |
| (Institute of Chemical Machinery Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China) |
|
|
|
|
Abstract To improve the efficiency of rod oil pumps,a new type of multistage,doubleaction roller rotary oil pump was put forward.In the pump rolling friction pairs are used to replace the conventional sliding friction ones and that cause a lower friction loss.A structure of multiple stages in series was adopted to raise discharge pressure greatly.Meantime a doubleaction structure in the inlet and outlet chamber was applied to get the radial force on the rotor balanced.Through analysis of forces applied on a roller in the pump,a force equilibrium equation was established.Based on the principle of minimum sliding friction,an optimal slot width was determined precisely by means of a computer code composed.By analyzing the rolling condition of a roller,the equilibrium equation of frictional moments on the roller surface was deduced,and considering the principal of optimal gap between two flat plates,eventually,a formula for determining the optimal gap between the roller and the valve plate was deduced.For a design example,such an optimal gap was calculated.As the gaps were 0.044 399 mm and 0.055 975 mm,respectively,the forces applied on rollers will be relief and the leakage will be reduced,subsequently the pump overall efficiency will be improved.The method proposed in the article comes up with a theoretical trial for determining,optimizing and choosing the gap to the pump.
|
|
Received: 02 September 2011
Published: 30 January 2012
|
|
|
|
| 参考文献(References)［1］谭海荣.国内外机械采油技术发展综述［J］.内蒙古石油化工,2008(4):64-68.Tan Hairong.The review of the artificial life developing in the home and aboard［J］.Inner Mongolia Petrochemical Industry,2008(4): 64-68.(in Chinese)［2］万晓玲,余爱明,王海军,等.提高抽油井系统效率的措施［J］.石油仪器,2009,23(6):66-68.Wan Xiaolin,Yu Aiming,Wang Haijun,et al.Analysis on measure of improving system efficiency of the pump well［J］.Petroleum Instrument,2009,23(6):66-68.(in Chinese)［3］狄敏燕,杨海滨,李汉周,等.江苏油田抽油泵泵效影响因素分析［J］.复杂油气藏,2009,2(2):65-68.Di Minyan,Yang Haibin,Li Hanzhou,et al.Analysis on the influence factors of oil well pump efficiency of Jiangsu oilfield ［J］.Complex Hydrocarbon Reservoirs,2009,2(2):65-68.(in Chinese)［4］叶晓琰,石海峡,胡敬宁,等.外环流转子泵转子与泵体间间隙的优化选择［J］.农业机械学报,2007,38(4): 81-84.Ye Xiaoyan,Shi Haixia,Hu Jingning,et al.Optimization selection of gap between rotor and pump body of external circulation rotor pump ［J］.Transactions of the Chinese Society for Agricultural Machinery,2007,38(4): 81-84.(in Chinese)［5］雷亚勇,吴晓明,陈春明,等.双作用叶片泵噪声产生机理和降噪分析［J］.机床与液压,2007,35 (1): 145-147.Lei Yayong,Wu Xiaoming,Chen Chunming,et al.Discussion on noise problem for doubleacting vane pump［J］.Machine Tool and Hydraulic,2007,35 (1): 145-147.(in Chinese)［6］张生昌,方宏生,邓鸿英,等.电动喷雾器用高效低噪双作用滚柱转子泵研制［J］.排灌机械,2008,26(4):18-21.Zhang Shengchang,Fang Hongsheng,Deng Hongying,et al.Design of double action roller rotary pump for electric sprayer with high efficiency and low noise［J］.Drainage and Irrigation Machinery,2008,26(4): 18-21.(in Chinese)［7］王天祥,何利民,任吉娟.刚性转子式叶片泵最佳过渡曲线研究［J］.流体机械,2006,34(3)：24-27.Wang Tianxiang,He Limin,Ren Jijuan.Study on the optimal transitional curve of stator for rigid rotator model vane pump［J］.Fluid Machinery,2006,34(3):24-27.(in Chinese)［8］Halling J.Principles of Tribology［M］.London: Macmillan Press LTD,1981.［9］孔珑.流体力学［M］.2版.北京:高等教育出版社,2011.［10］兰才有,仪修堂,薛桂宁,等.我国喷灌设备的研发现状及发展方向［J］.排灌机械,2005,23(1):1-6.Lan Caiyou,Yi Xiutang,Xue Guining,et al.Research state and development of sprinkler irrigation equipments in China ［J］.Drainage and Irrigation Machinery,2005,23(1):1-6.(in Chinese)［11］刘卫国.MATLAB程序设计与应用［M］.2版.北京：高等教育出版社,2008. |
|
|
|
