| 摘要: |
| 通过对取样孔的气液两相流的数值模拟和室内试验,探索取样孔的分流特性,考察取样小孔的结构(包括孔数、轴向取样位置、大小、形状和在圆周方向上的开孔位置)对取样的稳定性和均匀性及分流系数的影响。结果表明:液相分流系数与主管气相折算速度关系较小;当主管液相流速大于0.08 m/s,取样孔数目为8,直径为5 mm,位置距离整流器出口50 mm时,分流效果最好,能保证取样的均匀性和稳定性;数值模拟的液相分流系数平均值为0.064,与试验实测结果0.08相差较小。 |
| 关键词: 气液两相流 流量测量 分流分相法 分流特性 取样孔 分流系数 数值模拟 |
| DOI：10.3969/j.issn.1673-5005.2011.01.024 |
| 分类号::TE 868 |
| 文献标识码:A |
| 基金项目:“863”国家高科技研究发展计划项目(2007AA09Z301);国家科技重大专项课题(2008ZX05017-004-) |
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| Extracting characteristics of pipe wall sampling hole in swirled distributor |
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CAO Xuewen, WU Lianghong, ZONG Yuan, YANG Tao, ZHANG Wenjing
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(College of Storage & Transportation and Architectural Engineering in China University of Petroleum, Dongying 257061, China)
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| Abstract: |
| Based on the gasliquid twophase flow numerical simulation and experimental study on the flow rate measurement for sampling hole, extracting characteristics of sampling hole were investiga ted. The influence of sampling holes number, location in the axial direction,size,shape, and opening location on the circumference, on the stability and uniformity of sampling and the liquid phase extraction ratio was analyzed. The results show that the liquid phase extraction ratio bears little relation to main gas reduced velocity. The sample is of uniformity and stability when the liquid phase extraction ratio of the primary pipeline is more than 0.08 m/s and eight sampling holes with the diameter of 5 mm as well as the holes located 50 mm away from the rectifier outlet. Under these circumstances, the simulated liquid phase extraction ratio is about 0.064, which is very close to the experimental results of 0.08. |
| Key words: gasliquid twophase flow flow rate measurement extracting and separating method extracting characteristics sampling hole extraction ratio numerical simulation |
