| 用改进ECT技术测定油气两相流中空泡分数的测量研究 |
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| 引用本文： | 牛刚, ,贾志海, ,王经. 用改进ECT技术测定油气两相流中空泡分数的测量研究[J]. 中国化学工程学报, 2004, 12(4): 476-481 |
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| 作者姓名： | 牛刚 贾志海 王经 |
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| 作者单位： | SchoolofMechanicalEngineering,ShanghaiJiaotongUniversity,Shanghai200030,China |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | To measure the void fraction online in oil-gas pipeline, an improved electrical capacitance tomography (ECT) system has been designed. The capacitance sensor with new structure has twelve internal electrodes and overcomes the influence of the pipe wall. The data collection system is improved by using high performance IC (integrated circuit). Static tests of bubble flow, stratified flow and annular flow regime are carried out. Measurements are taken on bubble flow, stratified flow and slug flow. Results show that the new ECT system performs well on void fraction measurement of bubble flow and stratified flow, but the error of measurement for slug flow is more than 10%.
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| 关 键 词： | 空隙组分 测量方法 油气运输系统 油管 电容 ECT |
| 修稿时间： | |
Void Fraction Measurement in Oil-Gas Transportation Pipeline Using an Improved Electrical Capacitance Tomography System |
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| NIU Gang,JIA Zhihai,WANG Jing. Void Fraction Measurement in Oil-Gas Transportation Pipeline Using an Improved Electrical Capacitance Tomography System[J]. Chinese Journal of Chemical Engineering, 2004, 12(4): 476-481 |
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| Authors: | NIU Gang JIA Zhihai WANG Jing |
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| Affiliation: | School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200030, China;School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200030, China;School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200030, China |
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| Abstract: | To measure the void fraction online in oil-gas pipeline, an improved electrical capacitance tomography(ECT) system has been designed. The capacitance sensor with new structure has twelve internal electrodes and overcomes the influence of the pipe wall. The data collection system is improved by using high performance IC(integrated circuit). Static tests of bubble flow, stratified flow and annular flow regime are carried out. Measurements are taken on bubble flow, stratified flow and slug flow. Results show that the new ECT system performs well on void fraction measurement of bubble flow and stratified flow, but the error of measurement for slug flow is more than 10%. |
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| Keywords: | electrical capacitance tomography void fraction measurement oil-gas transportation |
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