新型深井排气阀设计及动态分析  

Design and dynamic analysis of new deep well exhaust valve

作　　者：秦连升 杜坚[1] Qin Liansheng;Du Jian(School of Mechatronic Engineering,Southwest Petroleum University,610500,Chengdu,China)

机构地区：[1]西南石油大学机电工程学院

出　　处：《应用力学学报》2019年第6期1362-1366,I0007,I0008,共7页Chinese Journal of Applied Mechanics

摘　　要：为有效保护和提高电潜泵及生产套管的有效寿命,防止生产过程中的伴生气体大量积累影响生产,设计了一种新型深井排气阀,对其结构、驱动方式、工作原理进行了介绍。利用FEM模拟深井排气阀从开启状态到闭合状态过程中,在不同倒角情况下排气阀所受压力的变化规律及流场特性。模拟结果表明:排气阀在整个闭合过程中流场最高速度约为263m/s,排气阀可承受的最大压力约为40MPa;排气阀能承受的压力、流场速度与排气阀开度、排气阀倒角变化趋势相反。经过对排气阀阀块角度的优选,最终确定55°倒角为最优角。本文设计的新型深井排气阀采用液压驱动方式,中间传动部件减少,结构简单,可靠性高;此外,该液压驱动方式借用高压气体作为一部分动力控制排气阀的开合,简化了结构,节省了动力组件布置空间。To effectively protect and improve the effective life of the electric potential pump and the production casing and to prevent the associated gas accumulates in the production process and affects the production, a new type of deep well exhaust valve is designed and corresponding structure, driving mode and working principle are introduced. With finite element method of deep well exhaust valve from open to close, to simulate the dynamic process under the condition of different exhaust valve chamfering, change law of pressure on the exhaust valve and flow field characteristics are analyzed. According to the analysis results, the maximum velocity of the fluid is about 263 m/s during the shutdown of the exhaust valve, and the maximum pressure of the sliding sleeve valve is about 40 MPa. The pressure of the fluid velocity and sliding sleeve valve are contrary to the change trend of the opening of the exhaust valve, and contrary to the change trend of the exhaust valve chamfer. Through the optimization of exhaust valve block angle, 55°angle for optimal angle was finally determined. The new type of deep well exhaust valve adopts the hydraulic driving mode, with fewer drive parts, simple structure and high reliability;In addition, high pressure gas is used to control the exhaust valve opening and closing as part of the hydraulic driving power, which can simplify the structure and effectively save the layout space of power components, and has high practical value.

关 键 词：井下排气阀 伴生气 动态分析 优化设计 

分 类 号：TH122[机械工程—机械设计及理论]