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文章介绍了国家石油天然气大流量计量站广州分站的临界流文丘里喷嘴次级标准装置的加工、几何检定和实流校准结果。探讨了校准数据的分析、使用方法,并对校准压力范围外的校准系数外延使用方法进行了验证。
This paper introduces the processing, geometric verification and real-time calibration results of the sub-standard device for the critical flow venturi nozzle of the Guangzhou Sub-station of the National Petroleum and Natural Gas Large Flow Metering Station. The analysis and application of calibration data are discussed, and the method of using the calibration coefficient outside the calibration pressure range is validated.