Variable Moments Of Energy-saving Pumping Units

The paper has studied the general theory of pumping unit energy-saving in a deep going and systematic way from mechanism and proposed .tested a new mechanical production theory according to relative data .By the abuse of conventional pumping unit, a new driving scheme is presented ,meanwhile profoundly studied according to the proposed energy-saving theory .the energy-saving key is found that is the configuration curve of hinder heaven sheave.The paper given accurate computer formula and variation curve about suspension point motion (displacement velocity acceleration) and the torque variation law of reductor shaft .given two conclusion: one is the factor affected motor power is the law of suspension point torque ,the other is the factor affect torque fluctuation is the difference between the effective radius of hind heaven sheave and the theory's.The power of motor is positive proportion to square root of equality of square pure torque .the pure torque is combined by suspension point torque and balancing weight torque ,so the change of suspension point's motion law and balancing weight offset angle can causes pure torque variation .especially, the suspension motion law is decided by configuration curve of hinder heaven sheave .so the paper has emphatically studied and analysis the law that the configuration curve of hinder heaven sheave brings the change of pumping unit energy-saving . A new pumping unit is designed by using the studied curve , the curve of the units load, motion and dymatics are being on computer and the results is analysised .The paper has studied critical technique about pumping unit energy-saving from existed pumping unit(jiankai-curve),as is a creation of research way;through studying and analysising,the paper has presumed and tested energy-saving law about pumping unit on mechanism,as is a theory creation; by suspension load change, the paper has designed a new curve,as is also a creation.these creations have never appeared,while formed the paper charactestics.The conclusion of this presents new method,new theory for the design of pumping unit in the future .