| 方正余,徐科军,张建国,刘铮,刘文,乐静.科氏质量流量计差分驱动方式研究与实验[J].电子测量与仪器学报,2017,31(12):2030-2035 |
| 科氏质量流量计差分驱动方式研究与实验 |
| Research and experiment on differential drive mode of Coriolis mass flowmeter |
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| DOI：10.13382/j.jemi.2017.12.021 |
| 中文关键词: 科氏质量流量计 气液两相流 驱动能量 差分驱动方式 |
| 英文关键词:Coriolis mass flowmeter gas liquid two phase flow drive energy differential drive mode |
| 基金项目:国家自然科学基金（61573124）资助项目 |
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| Author | Institution |
| Fang Zhengyu | School of Electrical and Automation Engineering, Hefei University of Technology, Hefei 230009, China |
| Xu Kejun | School of Electrical and Automation Engineering, Hefei University of Technology, Hefei 230009, China |
| Zhang Jianguo | School of Electrical and Automation Engineering, Hefei University of Technology, Hefei 230009, China |
| Liu Zheng | School of Electrical and Automation Engineering, Hefei University of Technology, Hefei 230009, China |
| Liu Wen | School of Electrical and Automation Engineering, Hefei University of Technology, Hefei 230009, China |
| Yue Jing | School of Electrical and Automation Engineering, Hefei University of Technology, Hefei 230009, China |
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| 中文摘要: |
| 在气液两相流发生时，基于单端驱动方式的科氏质量流量变送器的驱动能量不足，从而导致流量管的振动幅值很低，流量计测量误差大，甚至无法正常工作。为此，分析单端驱动方式下变送器的驱动能力和可以提升的空间。提出差分驱动方式，增强驱动能量，且满足本质安全的要求。研制实现电路，应用于科氏质量流量变送器，分别进行气液两相流下驱动能量的对比实验和单相水流量标定实验。实验结果表明，差分驱动方式在相同流量和含气量情况下，使流量管的振动幅值几乎提升1倍；在单相水流量情况下，测量精度依然可以达到0.1级，稳定性好。 |
| 英文摘要: |
| When the gas liquid two phase flow occurs, the drive energy of Coriolis mass flow transmitter based on single ended drive mode is insufficient, which leads to very low of the vibration amplitude of the flow tube,very large of the measurement error of the flowmeter, and even abnormal work. Therefore, the drive capacity and its enhancing space of the transmitter based on single ended drive mode are analyzed.A differential drive mode is proposed to enhance the drive energy and meet the requirements of intrinsically safe. The circuit is developed and used in Coriolis mass flow transmitter. The comparative experiments on two kinds of driving modes are performed under the gas liquid two phase flow, and the water flow calibration experiments are conducted. The experimental results show that the vibration amplitude of the flow tube is almost doubled in the same flow rate and gas volume fraction when the transmitter is based on differential drive mode. The measurement accuracy can still reach 0.1% in the case of the single phase flow, so the differential drive mode can maintain the vibration stability of the flow tube. |
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