滑片泵防漏液水力结构优化研究.pdf

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CIIINA PETROLEUM MACHINERY
2014年第42卷第1期
油气田开发工程
滑片泵防漏液水力结构优化研究
薛亮赵岩龙张立新2郝忠献
(1.中国石油大学(北京)石油工程学院2.中国石油勘探开发研究院
摘要:基于计算流体力学和有限元数值模拟方法,建立了滑片泵数值模拟模型,针对滑片泵
压力负載条件下的流量损失进行了结构优化设计研究。研究结果表明,优化前滑片泵在3腔吸液
3腔排液带压工況时,吸液腔与排液腔之间没有过渡腔,且只有1个滑片密封,导致滑片泵出现
流量损失;经过优化后减小了滑片泵出口与入口相位角,在相邻的低压吸液腔与高压排液腔之间
设置过渡腔,増加了参与密封的滑片数,明显滅少了滑片泵压差负载条件下流量损失;经过优化
后的滑片泵在压力负载条件下流量増大,证明了滑片泵优化设计的可靠性。
关键词:滑片泵;数值模拟;流量损失;鈽构优化; Cfdesign
中图分类号:THE933文献标识码:Adoi:10.3969/jisn.1001-4578.2014.01.020
Research on the Optimization of Leak-proof
Hydraulic Structure of Vane Pump
Xue Liang Zhao Yanlong Zhang Lixin? Hao Zhongxian
( 1. College of Petroleum Engineering, China University of Peroleum, Beijing 2. Petrochina Researh Institate f Petroleum Explo
ration Development)
Abstract: On the basis of computational fluid dynamics and finite element numerical simulation method, the
numerical simulation model of sliding vane pump was established. Research on the structural design optimization was
conducted in light of flow rate loss in the condition of vane pump pressure load. The research findings show that in
the pressure condition of three-cavity suction and three-cavity drainage, there is no transitional cavity between suc
tion cavity and drainage cavity for vane pump before optimization. Moreover, there is only one vane which is
sealed. As a result, flow loss occurs with vane pump. After pump optimization, the phase angle between outlet and
nlet is reduced. The transitional cavity is offered between neighboring low-pressure suction cavity and high-pressure
drainage cavity. The number of vanes involving sealing is increased. Therefore, the fow loss of the pump is reduced
remarkably in the condition of pressure difference load. After pump optimization the flow rate increases in the condi-
tion of pressure load, which verifies the reliability of the design optimization for the pump
Key words vane pump; numerical simulation; flow loss; structural optimization; Cfdesign
全金属滑片泵,该泵具有良好的耐高温性能,在离
0引言
心力的作用下滑片在转子的槽内径向滑动,滑片长
度可以补偿磨损,密封可靠性好。滑片泵作为容积
稠油热米技术广泛应用于辽河、胜利、河南、泵的一种,在无压力负载条件下流量存在一个理论
新疆、大港和吉林等稠油区-3。稠油热采井温度值,可通过计算得到。但在室内试验过程中发现滑
较高,这对采油泵的耐高温与密封可靠性提出了更片泵在有压力负载条件下流量下降,研制的滑片泵
高要求。中国石油勘探开发研究院研制了一种新型在零压力负载条件下流量为0.317L/s,在1MPa
基金项目:国家自然科学基金创新研究群体项目“复杂油气井钻井与完井基础研究”(51221003)