螺旋轴流式油气混输泵气液分离特性  

Study on Gas-liquid Separation Characteristics of Oil-gas Mixture Pump

作　　者：周巍巍 韩伟[2] 赵庆凯 袁仕芳 权辉[2] 赵月前 ZHOU Wei-wei;HAN Wei;ZHAO Qing-kai;YUAN Shi-fang;QUAN Hui;ZHAO Yue-qian(CNOOC China Limited,Tianjin Branch,Tianjin 300452,China;College of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China;Haimo Technologies Group Corp.,Lanzhou 730010,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300452 [2]兰州理工大学能源与动力工程学院,甘肃兰州730050 [3]海默科技(集团)股份有限公司,甘肃兰州730010

出　　处：《液压气动与密封》2022年第10期39-43,共5页Hydraulics Pneumatics & Seals

基　　金：中央引导地方科技发展-渤海航道区浅水多相流量计样机研制及产业化项目(YDZX20216200003442);国家自然科学基金面上项目(82179086)。

摘　　要：为了获得油气混输泵的两相分离规律以及该分离性质对该泵产生的影响,通过对含气率GVF=0.4的螺旋轴流式油气混输泵进行模拟计算,定量地分析了叶轮域内气液两相的分布及速度变化情况。结果发现:气液分离对流体流动造成的堵塞作用主要集中在靠近工作面以及背面的流道上,对中间流道上的影响较低。对导叶内部流场进行分析,发现两相分离造成的气团堆积,使得进入导叶的流体在流动中存在一低压区,该低压区使得流体在导叶内部形成二次回流。这说明了气液分离现象不但对泵叶轮区域造成了流动堵塞,且造成了导叶的二次回流损失。In order to obtain the two-phase separation law of oil-gas pump and the effect of the separation property on the pump, a helical axial-flow oil-gas pump is numerically calculated when its gas volume fraction GVF=0.4. The distribution in the phase of gas and liquid and the velocity variation in impeller domain are analyzed quantitatively. The results showed as follows: the blocking effect of gas-liquid separation on fluid flow is mainly concentrated on the flow passage near the working face and the back, and has a low impact on the middle flow channel. The internal flow field of guide vane is analyzed. The flow field inside the guide vane of the pump was analyzed. It was found that the air mass accumulation caused by two-phase separation resulted in a low pressure are. The low pressure area causes the fluid to form a secondary reflux inside the guide vane. This shows that the gas-liquid separation phenomenon not only causes flow blockage in the impeller region of the pump, but also causes secondary reflux loss of the guide vane.

关 键 词：油气混输泵 气液分离 流动堵塞 二次回流 

分 类 号：TH137[机械工程—机械制造及自动化] TH138[动力工程及工程热物理—流体机械及工程] TK72