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中南大学学报(自然科学版)

Journal of Central South University

第48卷    第11期    总第279期    2017年11月

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文章编号:1672-7207(2017)11-2906-06
双头单螺杆泵定子衬套热力耦合研究
韩传军,郑继鹏,叶玉麟,陈飞

(西南石油大学 机电工程学院,四川 成都,610500)

摘 要: 为研究稠油热采工况下橡胶衬套的温升机理,对高温、含砂稠油工况下螺杆泵的定子橡胶衬套进行摩擦学试验。基于传热学原理,运用有限元方法对双头单螺杆泵橡胶衬套进行热力耦合研究,分析定子橡胶衬套温度场和热应力、应变的变化规律,并研究转速、过盈量、摩擦因数等因素对定子衬套热力耦合的影响。研究结果表明:考虑橡胶滞后生热作用,衬套的温度呈椭圆形分布,沿中心向外递减;衬套的温升,最大热应力和最大位移随转速、过盈量的增大而增大,随摩擦因数的增大而减小;摩擦因数对衬套的热力耦合场影响相对较小。

 

关键字: 双头单螺杆泵;定子衬套;摩擦试验;热力耦合;有限元方法

Thermal-mechanical coupling analysis for double-helix single screw pump’s stator lining
HAN Chuanjun, ZHENG Jipeng, YE Yulin, CHEN Fei

School of Mechanical Engineering, Southwest Petroleum University, Chengdu 610500, China

Abstract:To study the mechanism of temperature change under the heavy oil and thermal recovery condition, the tribological experiment of the stator rubber lining was conducted in the hot and sand laden oil. Based on the heat transfer theory, the thermal-mechanical coupling of rubber lining of double-helix single screw pump, and the distribution rules of the temperature field, the stress and the strain were analyzed with finite element analysis (FEA) method. The effects of speeds, interference and friction coefficient on thermal-mechanical coupling of stator lining were studied. The results show that under the influence of ruber hysteresis, the temperature field of the lining is in symmetrical ellipse and it descends along the centre outside. The rise of temperature, the biggest thermal-stress and displacement increase with the increase of speed and interference, and decrease with the increase of friction coefficient. The influence of friction coefficient on the thermal-mechanical of the lining is minor.

 

Key words: double-helix single screw pump; stator lining; friction test; thermal-mechanical coupling; finite element method

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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