常压气体流量标准装置控制系统研究与性能测试

发布时间：2018-09-07 09:04

【摘要】：标准表法气体流量标准装置为量值传递标准,在流量仪表以及流量计量方法研究中发挥着重要作用。随着研究的不断深入,对流量标准装置的性能提出了更高的要求。本文以天津大学流量实验室大口径常压气体流量标准装置为研究对象,着眼于装置流量范围、精度以及控制系统的可靠性,提出装置改造方案,重点研究了装置的控制系统的软硬件设计方案以及方案的实现。根据检定规程对装置的性能指标进行了理论分析和实验验证。气体流量标准装置建设目的是为了进行流量仪表测试。根据检定规程,在实验装置上进行了标准孔板流量计、热式质量流量计和超声流量计的检定。标准孔板流量计主要是对装置的精度进行测试。热式质量流量计和超声流量计的检定主要是对装置的整体运行情况进行系统的测试。本文的工作,提高了装置的精度,增强了控制系统的可靠性和可操作性,为同类装置的建设提供了经验和思路,并对装置的发展提出了展望。
[Abstract]:The standard meter gas flow standard device is the standard of value transfer, which plays an important role in the research of flow meter and flow measurement method. With the development of the research, the performance of the flow standard device is required higher. This paper takes the large caliber atmospheric pressure gas flow standard device of Tianjin University flow Laboratory as the research object, focusing on the device flow range, precision and the reliability of the control system, and puts forward the reconstruction scheme of the device. The hardware and software design and the realization of the control system are studied. According to the verification regulation, the performance index of the device is theoretically analyzed and verified by experiment. The purpose of the gas flow standard device is to test the flow meter. According to the verification regulation, the standard orifice plate Flowmeter, thermal mass Flowmeter and ultrasonic Flowmeter are calibrated on the experimental device. The standard orifice plate Flowmeter is mainly used to test the accuracy of the device. The verification of thermal mass Flowmeter and ultrasonic Flowmeter is mainly to test the whole operation of the device. The work of this paper improves the precision of the device, enhances the reliability and maneuverability of the control system, provides experience and ideas for the construction of the same kind of device, and puts forward the prospect for the development of the device.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TH814;TP273

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