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基于PLC与组态技术的气体超声波流量计校准平台
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国家自然科学基金地区科学基金项目(61663001);江西省教育厅科技项目(GJJ209504);江西省人文社科基金(SH18109)


Calibration Platform for Ultrasonic Gas Flowmeter Based on PLC and Configuration Technology
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    摘要:

    针对气体超声波流量计校准装置成本高、精度低、检定效率差的事实,以喷嘴流量计为标准表研制气体超声波流量校准平台。在分析超声波传输原理与校准平台结构的基础上,以50 mm管径为待测表管道,采用空气负压气源,建立气体流量模型,进行气体流量稳定的PID仿真验证。采用PLC控制电动阀实现稳流,经温压补偿运算后上传至组态界面,在组态监控环境下比较标准表和待测表的流量值,完成校准平台的实流检定。对校准结果进行测量性能指标分析,该平台达到了设计要求。

    Abstract:

    Aiming at the fact that the calibration device for ultrasonic gas flowmeter has high cost,low accuracy and poor verification efficiency,a ultrasonic gas flow calibration platform was developed with nozzle flowmeter as the standard meter.Based on the analysis of the principle of ultrasonic transmission and the structure of the calibration platform,the PID algorithm was used to verify the gas flow stability by establishing the gas flow model with 50 mm diameter as the pipeline to be measured and the negative pressure air source.The PLC was used to control the electric valve to achieve steady flow,which was uploaded to the configuration interface after temperature and pressure compensation.The flow values of the standard meter and the meter to be verified were compared to complete the real flow verification of the calibration platform in the configuration environment.After analyzing the performance of the calibration results,the designed calibration platform meets the design requirements.

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胡开明,李跃忠,刘薇.基于PLC与组态技术的气体超声波流量计校准平台[J].机床与液压,2022,50(10):96-100.
HU Kaiming, LI Yuezhong, LIU Wei. Calibration Platform for Ultrasonic Gas Flowmeter Based on PLC and Configuration Technology[J]. Machine Tool & Hydraulics,2022,50(10):96-100

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  • 在线发布日期: 2022-06-30
  • 出版日期: 2022-05-28