Simulation Experimental Study On Metal Rubber Damping Suspension

Sucker rod is slender and elastic.In the process of reciprocating motion,the dynamic loads on the pumping unit suspension point will be changed by the magnitude of load and direction of motion of the rod,leading to the increase of the maximum polished rod load and the decrease of the minimum.Eventually,the input power of the electromotor is increased and the working efficiency of the pumping unit system is reduced as well.In order to overcome the adverse impact brought out by the dynamic load,vibration beam suspension is designed in this paper,the elastic damping of the absorber can reduce the effect of dynamic load on the polished rod load,thus,input power of the motor is reduced and it achieves the purpose of saving energy consumption.The paper combined the theory and laboratory test to research the influence of vibration beam suspension on the polished rod load.To investigate the effect of the metal rubber in shock absorbers on the load shedding and determine the corresponding parameters,virtual prototype technology was applied to simulate the damping effect of the vibration beam suspension.The paper studied the forming processes and support facilities of the metal rubber,then designed the vibration beam suspensionand metal rubber as an damping element.The research on the hysteresis characteristics of the metal rubber was carried out though the static tests and the pumping unit test platform was reformed to check the damping effect.Combining the results of theory and experiment,the load shedding effect of metal rubber on pumping beam suspension was summarized?Though the virtual prototype simulation and laboratory test results analysis,we obtained the change rules of polished rod load with the effect of different physical parameters damping element under the condition of different pumping speed.It was investigated that the limit value of load shedding decreased with the increase of the stiffness coefficient of the damping element,and increasing the density ratio of the metal rubber,the damping decreased.It was confirmed that the impact of damping effect on polished rod load was greater than the stiffness effect of the element.When the vibration beam suspension was the same,the damping effect was weakened by the increase of the times of stroke,and during one stroke,the damping effect would also be worse when the density ratio of metal rubber increased.The research findings lay the foundation of the theory and experiment for the design,development and engineering application of the vibration beam suspension.