Synthesis of a Pumping Unit With Consideration of a Flexible Member in the System

Sapietová, Alžbeta; Sekerka, Michal; Vaško, Milan; Sapieta, Milan

doi:10.12913/22998624/64069

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…Currently, numerous flexible pumping units are employed in oil production, including the flexible ultra-long stroke pumping unit, flexible ultra-long polished rod stroke pumping unit, and double-range flexible pumping unit. However, the steel wire ropes applied in most flexible pumping units can deform and become tangled during operation, affecting process accuracy and increasing the chances of fractures with frequent use, leading to the reduced safety and reliability of the machines [20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Kinematic and Dynamic Analysis of Eccentric Balanced Positive Torque Pumping Unit

Xu,

Wang,

et al. 2024

Machines

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Beam pumping units have numerous energy transfer links, significant net torque fluctuations and negative net torque in gear boxes, which lead to a high installed power and low system efficiency. In order to improve the efficiency of the pumping unit, in this paper, an eccentric balanced positive torque pump unit was designed based on the principle of eccentric balance that is small in size and adopts a flexible energy transfer system instead of a rigid structure to significantly reduce the energy transfer link. The kinematics and dynamics of the eccentric balanced positive torque pumping unit were analyzed and the ability to operate with positive torque over the entire cycle was verified using theoretical computations. And the results of the theoretical calculation were verified by using the virtual prototype simulation and analysis software ADAMS (Automatic Dynamic Analysis of Mechanical Systems); the pumping unit was optimized for relevant parameters such as the balance crank angle λ and the counterweight center of mass offset angle δ. Indoor testing and comparative field application have demonstrated that the installed power has been reduced by 80%, the weight of the entire prototype has decreased by 25% and the system efficiency has reached 24.3%. Additionally, electricity savings of over 50% have been achieved. These results indicate that the pumping unit has been designed correctly, has high reliability and has significantly improved system efficiency while also providing an obvious energy-saving effect.

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Section: Introductionmentioning

confidence: 99%