防刺短节对节流阀流量特性影响规律的研究  

The influence of the erosion resistance device to the throttle valve′s flow characteristics

作　　者：王德贵[1] 李永飞[1] 严金林[1] 方倩[1] 

机构地区：[1]中国宝鸡石油机械有限责任公司,陕西宝鸡721002

出　　处：《阀门》2012年第1期8-10,共3页VALVE MAGAZINE

基　　金：国家重大专项"煤层气欠平衡钻井配套技术研究"(2008ZX05000-036-003)的部分研究内容

摘　　要：冲蚀磨损是井控节流阀正常工作下的主要失效形式,为了延长其使用寿命,减小其冲蚀磨损而设计了一种防刺短节装置。但该装置对节流阀流量特性的影响规律尚不清楚,为了对其现场应用提供理论参考,采用三维流场分析的方法,对其流场进行了研究。结果表明,防刺短节对节流阀的压降、流阻系数和流量系数影响不明显,不会对节流阀的现场操作带来影响。安装防刺短节仍然要避免节流阀在较小开度下长时间工作。针对楔形节流阀阀瓣与阀座之间无冲击的特点,提出了阀瓣采用陶瓷材料的建议。Erosion failure is the main lapsed form of the throttle valve. In order to extend the life of the throttle valve, erosion resistance device is designed for this problem. However the characteristics of the erosion resistance device is not clear. In order to provides a theoretical reference for the application. In this paper,based on the 3D flow field analysis method, Comparative analysis is done, the results show that pressure drop, flow and hinder coefficient, flow coefficient are not changed obvious. Even if the erosion resistance device are installed, throttle valve is still should avoid working long hours under relatively small opening. For the spool valve and valve seat is impact-free, ceramic materials are suitable for the spool valve.

关 键 词：节流阀 防刺短节 压降 流阻系数 流量系数 

分 类 号：TH134[机械工程—机械制造及自动化]