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| 振动管流体密度计设计研究 | |
| 引用本文： | 李琼,孔令罔,秦实宏,欧阳勇林.振动管流体密度计设计研究[J].舰船电子工程,2012,32(6):143-145. |
| 作者姓名： | 李琼 孔令罔 秦实宏 欧阳勇林 |
| 作者单位： | 1. 武汉工程大学电气信息学院,武汉430074／武汉大学电子信息学院,武汉430079 2. 武汉大学印刷与包装系,武汉,430079 3. 武汉工程大学电气信息学院,武汉,430074 4. 中国石油集团长城钻探工程有限公司,北京,100101 |
| 摘 要： | 从力学角度对欧拉—伯努利梁的简谐振动进行分析,推导出梁的横向振动方程;在考虑边界条件的情况下推导出两端固定梁的频率方程和主振型函数;建立主振型频率与相应密度的关系解析式,求解得到目标流体密度。以此为基础,文章提出了一种基于振荡管的新型流体密度测量方法(系统)。实验表明,相对于目前外业常用流体密度计,该流体密度计具有误差小于0.2%的高测量精度,且具有较好的抗恶劣环境的性能。 |
| 关 键 词： | 流体密度 梁振动模型 振动方程 |
Fluid Densimeter Design by Means of Beam-mechanics Model |
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| Institution: | LI Qiong1,2 KONG Lingwang3 QIN Shihong1 OUYANG Yonglin4(1.School of Electrical and Infomation Engineering,Wuhan Institute of Technology,Wuhan 430074)(2.School of Electronic Information,Wuhan University,Wuhan 430079)(3.School of Printing and Packaging,Wuhan University,Wuhan 430079)(4.China National Petroleum Corporation Greatwall Drilling Company,Beijing 100101) |
| Abstract: | Harmonic Oscillation of Bernoulli-Euler beam was analyzed in sense of mechanics to deduce its horizontal vibration function.The frequency function and the principle vibrating function were developed with its 2 terminals fixed and the boundary condition concerned.The target fluid density was ultimately solved from the density function of principle vibrating frequency.By means of the mentioned above,a novel fluid densimeter was designed and its experiments showed that,compared with the currently applied outdoor devices,it had a higher measuring accuracy with the lower 0.2% relative error,as well it had well performance of bad-environment resistance. |
| Keywords: | fluid density beam vibrating model oscillation function |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |