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CLARIFICATION OF MEASUREMENT ERROR OF ORIFICE FLOW METER IN WET STEAM FLOW

机译:湿蒸汽流量孔口流量计测量误差澄清

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摘要

It is well known that the wetness of steam flow sometimes causes measurement errors of the steam flow meter. However, it is difficult to clarify a particular error quantitatively in actual plants and factories, and thus far, there has been no established method for estimating the error caused by the wetness of steam flow. Therefore, wet steam flow rate measurement experiments were conducted to clarify the measurement error caused by the wetness of steam flow in a plant and a factory. In this study, as the first step, the orifice flow meter was applied because it is the main flow meter in actual plants. Experiments were conducted with the steam flow apparatus by changing the flow rate, pressure and wetness. As a result, the correlation between the measurement error and the flow condition was clarified. Moreover, for the correction of the error, a new correction method was applied and was confirmed to be better than existing methods now being used.
机译:众所周知,蒸汽流动的湿润有时会导致蒸汽流量计的测量误差。然而,很难在实际植物和工厂中定量阐明特定误差,因此,没有建立用于估计由蒸汽流湿度引起的误差的方法。因此,进行了湿蒸汽流速测量实验,以阐明植物和工厂中蒸汽流动湿润引起的测量误差。在本研究中,作为第一步,施加孔口流量计,因为它是实际植物中的主要流量计。通过改变流速,压力和湿度,用蒸汽流动装置进行实验。结果,阐明了测量误差与流动条件之间的相关性。此外,对于误差的校正,应用了一种新的校正方法,并确认了比现在使用的现有方法更好。

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