| 摘要: |
| 以钻井液作为介质,对锥阀、球阀、板阀3种阀芯4种不同结构的阀座形式在不同开度下的流量、压力进行测量 和计算，得出了各种条件下钻井液提升阀阀口流量系数及其规律，并与水压阀阀口流量系数进行对比分析。结果表 明:阀座倒角角度和倒角长度对锥阀及球阀阀口流量系数有较大影响，对板阀影响较小;背压存在与否对板阀流量 系数变化规律影响较大;与水压阀相比,钻井液提升阀阀口流量系数略高。 |
| 关键词: 钻井液 幂律流体 提升阀 流量系数 |
| DOI：10.3969/j.issn.1673-5005.2010.02.025 |
| 分类号:TE 927 |
| 基金项目:国家“863”计划项目(2008AA09Z311) |
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| Measurement of flow coefficient of poppet valve for drilling fluid |
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ZHU Wan-sheng, ZHANG Zuo-long, LI Ji-zhi
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(College of Mechanical and Electronic Engineering in China University of Petroleum, Dongying 257061，China)
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| Abstract: |
| Experimental investigations were made on the flow coefficient of cone valve, ball valve and plate valve taking drilling fluid as the working media. The data and law of flow coefficient of poppet valve for drilling fluid were obtained in various situations by measuring flow and pressure at different opening of four structures of valve seats. The flow coefficient was compared with that of water valve. Results show that the angle and length of seat's chamfer have a significant effect on flow coefficient of cone valve and ball valve, and relatively slight influence on plate valve. The back pressure has an obvious influence on plate valve's flow coefficient. The flow coefficient of poppet valve for drilling fluid is larger than that of water valve. |
| Key words: drilling fluid power-law fluid poppet valve flow coefficient |
