A METHOD TO DETERMINE INFULUENCE OF MULTIPHASE FLOW ON VIBRATION CHARATERISTICS OF CORIOLIS MASS FLOWMETER’S MEASURING TUBE |
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| Chan-Na Xu, Liang Hu, Xin Fu |
- Abstract:
- Coriolis mass flowmeter (CMF) is a preference for mass flow rate measurement for its high accuracy. However, with multiphase flow, CMF has deducted accuracy and is prone to fail due to the lack of stable vibration of measuring tube, which is the premise of CMF’s accurate measurement. This paper presents a method to determine the influence of multiphase on vibration characteristics of CMF’s measuring tube. At first, the measuring tube with multiphase flow is drove at a series of frequencies to obtain its frequency responses. Then transfer function of the vibration system is identified by amplitude-frequency curve fitting and phase-frequency curve fitting. At last, vibration characteristics of the measuring tube with multiphase flow are derived from the transfer function. To verify this method, experiments of pure water, gas, and gas/liquid flow are conducted and the results are presented. Discussions and conclusions about influence of multiphase flow on measuring tube’s vibration characteristics have been carried out and are expected to lay the foundation of vibration control for CMF in multiphase flow. Further research about the vibration characteristics of any type of measuring tube with various multiphase flows such as solid/liquid flow and heavy oil can be conducted with the method presented in this paper.
- Keywords:
- Coriolis mass flowmeter, multiphase flow, vibration characteristics, measuring tube
- Download:
- IMEKO-WC-2015-TC9-230.pdf
- DOI:
- -
- Event details
- Event name:
- XXI IMEKO World Congress
- Title:
Measurement in Research and Industry
- Place:
- Prague, CZECH REPUBLIC
- Time:
- 30 August 2015 - 04 September 2015