中国石油大学学报（自然科学版）
中國石油大學學報（自然科學版）
중국석유대학학보（자연과학판）
JOURNAL OF CHINA UNIVERSITY OF PETROLEUM(EDITION OF NATURAL SCIENCE)
2014年
6期
134-139
,共6页
姜东%石白妮%李增亮%郭海滨
薑東%石白妮%李增亮%郭海濱
강동%석백니%리증량%곽해빈
全金属螺杆泵%CG 宏%动网格%黏度%转速%容积效率%泵效
全金屬螺桿泵%CG 宏%動網格%黏度%轉速%容積效率%泵效
전금속라간빙%CG 굉%동망격%점도%전속%용적효솔%빙효
metal progressive cavity pump%CG macro%dynamic mesh%viscosity%rotation speed%volumetric efficiency%o-verall efficiency
基于计算流体力学(CFD)，选用三维瞬态湍流动网格模型，对双头全金属单螺杆泵进行流体仿真分析，编写 CG宏函数实现动网格中流域动边界的行星运动，仿真研究不同黏度和转速对泵工作效率的影响，同时对该型全金属螺杆泵在不同黏度和转速下进行实验研究。结果表明：在稠油热采环境中，油液黏度较低(<50 mPa·s)，提高转速可以有效改善容积效率和泵效；在稠油冷采环境中，油液黏度较高(>50 mPa·s)，提高转速泵效先增大后减小，转速过大会引起定转子接触碰撞频率、油液对转子的正压力以及油液对转子的摩擦阻力的增大，使得泵效降低，容积效率维持在较高水平；该泵更适合于黏度较高液体的输送。
基于計算流體力學(CFD)，選用三維瞬態湍流動網格模型，對雙頭全金屬單螺桿泵進行流體倣真分析，編寫 CG宏函數實現動網格中流域動邊界的行星運動，倣真研究不同黏度和轉速對泵工作效率的影響，同時對該型全金屬螺桿泵在不同黏度和轉速下進行實驗研究。結果錶明：在稠油熱採環境中，油液黏度較低(<50 mPa·s)，提高轉速可以有效改善容積效率和泵效；在稠油冷採環境中，油液黏度較高(>50 mPa·s)，提高轉速泵效先增大後減小，轉速過大會引起定轉子接觸踫撞頻率、油液對轉子的正壓力以及油液對轉子的摩抆阻力的增大，使得泵效降低，容積效率維持在較高水平；該泵更適閤于黏度較高液體的輸送。
기우계산류체역학(CFD)，선용삼유순태단류동망격모형，대쌍두전금속단라간빙진행류체방진분석，편사 CG굉함수실현동망격중류역동변계적행성운동，방진연구불동점도화전속대빙공작효솔적영향，동시대해형전금속라간빙재불동점도화전속하진행실험연구。결과표명：재주유열채배경중，유액점도교저(<50 mPa·s)，제고전속가이유효개선용적효솔화빙효；재주유랭채배경중，유액점도교고(>50 mPa·s)，제고전속빙효선증대후감소，전속과대회인기정전자접촉팽당빈솔、유액대전자적정압력이급유액대전자적마찰조력적증대，사득빙효강저，용적효솔유지재교고수평；해빙경괄합우점도교고액체적수송。
Using FLUENT software, the double lobes metal progressive cavity pump was analyzed with the 3D dynamic mesh meth-od, and the eccentric rotation of the rotor in the stator was studied. The CG macro function which could make the rotor rotate was proposed. The influence of different conditions on the pump performance was studied using simulation and experimental methods. The results show that in the environment of thermal recovery of heavy oil, the increase of the rotating speed can effectively improve the volumetric efficiency and pump efficiency for the oil of lower viscosity (<50 mPa·s); in the environment of cold production of heavy oil, when the rotating speed increases, the pump efficiency increases in the beginning and then decreases for the oil of high-er oil viscosity (> 50 mPa·s). Because of the frequency of the contact between stator and rotor, the positive pressure and fric-tional resistance of the rotor increased with the increase of rotating speed, which makes the pump efficiency decrease. The increase of the speed can significantly improve the volumetric efficiency and overall efficiency of the metal progressive cavity pump for the conveying of a low viscosity liquid, but much higher speed also can cause the reduction of overall efficiency; volumetric efficiency and overall efficiency basically remain unchanged with the change of the differential pressure and the speed for the conveying of a high viscosity liquid; which is more suitable for the transportation of higher viscosity liquid.
