Thermal failure of 2/3 PCP in high temperature environment and optimization analysis of stator and rotor meshing parameters |
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| Institution: | 1. Key Laboratory of Oil & Gas Equipment, Ministry of Education (Southwest Petroleum University), Chengdu, 610500, PR China;2. School of Mechatronic Engineering, Southwest Petroleum University, Chengdu, 610500, PR China;1. Institute of Disaster Prevention Science & Safety Technology, Central South University, Changsha, 410075, China;2. Beijing Key Laboratory of Metro Fire and Passenger Transportation Safety, China Academy of Safety Science and Technology, Beijing, 100012, PR China;1. Physikalisch-Technische Bundesanstalt, Braunschweig, Germany;2. Technische Universitaet Braunschweig, Institute for High Voltage Technology and Electrical Power Systems – elenia, Braunschweig, Germany;2. Lloyd''s Register, Applied Technology Group, Halifax, Canada;1. LISES - Department of Civil, Chemical, Environmental and Material Engineering, Alma Mater Studiorum – University of Bologna, via Terracini 28, 40131, Bologna, Italy;2. Department of Civil and Industrial Engineering, University of Pisa, Largo Lucio Lazzarino 2, 56126, Pisa, Italy;3. Department of Mechanical and Materials Engineering, McLaughlin Hall, Queen''s University, Kingston, ON K7L 3N6, Canada |
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| Abstract: | Progressive cavity pump (PCP), which has problems such as invalid and leakage of rubber bushings, is employed in heavy oil field exploitation. In this paper, based on the thermal aging mechanical test of rubber and the fitting precision evaluation result of the constitutive model, the rubber constitutive model is optimized; the finite element model of PCP is established; the deformation law of stator bushing inner wall is quantitatively analyzed by numerical simulation method; and the phenomenon that temperature field distribution and thermal aging failure of stator rubber bushings is revealed. As results: The increase in well depth, which leads to the increase in the overall temperature of the stator bushing and the decrease of the thermal hysteresis, have greatest influence on the temperature of the stator bushing; the interference, which leads the maximum temperature increases first and then decreases, has a great impact on the thermal hysteresis; and the eccentricity have little effect on the thermal hysteresis of the stator bushing. The research results provide theoretical support to optimize stator and rotor parameter matching, recommending applicable working conditions, improving invalid of stator bushing, pump leakage and other issues. |
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| Keywords: | Progressive cavity pump (PCP) Rubber Constitutive model Thermal hysteresis effect Numerical simulation |
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