Application of Speed-Regulating Slip Clutches on oil Pumping Unit

For popularizing the new technique, the Xiangfan Oil transportation Company carried out 1042hours test with the regulating spead type slippery and differential clutches applied on oil pumping unit. The paper introduces the structure of such clutches, the working principle, the testing status and the energy saving results. This test had been passed by the technical appraisal of the Pipeline Bureau.