Numerical Simulation and Sensitivity Analysis on Stator Temperature of Progressive Cavity Pump
During the operation of propgressive cavity pump(PCP),the temperature of its stator will increase significantly due to lag heating and frictional heating,and pump burning may occur af-ter long-term operation.In order to investigate the temperature distribution of PCP stator,numerical simulations of the stator temperature fields under various conditions were conducted based on a model with dual heat source,and the influence of stator bushing outer diameter,eccentricity,elastic modu-lus and thermal conductivity of rubber were evaluated.The results indicate that the temperature of the stator is significantly higher than that within the pump.Furthermore,influenced by the geometric shape of the stator,the temperature exhibits a concentrated distribution,with the highest temperature rise occurring at the thick-walled sections.Apparently,the temperature rise of stator bushing de-pends on its thickness,stator temperature increases with the increase in wall thickness,and it is worth to note that the heating phenomenon of PCP stator bushing can be improved while appropriate PCP geometry is employed.In addition,the elastic modulus and thermal conductivity of rubber de-termine the dissipation,storage and diffusion of generated energy during the deformation of stator bushing,and as the elastic modulus and thermal conductivity increase,the temperature rise of the stator bushing decreases.Ultimately,the temperature rise of PCP stator bushing is affected by its structure and properties,so during the design of PCP,the structural parameters of stator bushing and the selection of rubber should be reasonably optimized under the premise of ensuring its lifting effi-ciency.
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维普
