Selected Journal of the Excellence Action Plan for China's Science and Technology Journals (Phase II),Selected Journal of Chinese Applied Core Journals (Extended Edition) / CACJ (Extended),Indexed in the Chinese Core Journals (Selection) Database
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燃气涡轮流量计非定点检测误差预测研究

Issue Number Issue 02, 2025 [View other articles in this issue]
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Publication Date 2025.02.15
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Author 张 琴1,2,张 翰1,2,李玮昊1,2,翟楠希1,董新利1
Organization 1.北京市燃气集团有限责任公司
2.国家城镇燃气流量计量站

Abstract

流量计的准确计量是保障对天然气贸易公平交接的关键技术,其计量准确性可以通过检定进行判定,检定所得的各流量点的示值误差是流量计计量准确性的定量表现,是计量性能的重要判断依据之一。本文以燃气涡轮流量计为研究对象,通过标准表比对法开展天然气实流检定实验,分析了涡轮流量计的误差曲线特性,并采用数值分析方法对非定点检测误差进行了预测分析,线性内插法能较好地预测分界流量(qt)以上非定点流量的示值误差,位于低流量区的非定点流量无法通过线性内插较好地进行预测;位于低流量区的非定点流量的示值误差可以通过多项式内插法(如拉格朗日插值法)进行预测,预测偏差较线性内插法较小,预测效果更佳。

Keywords

涡轮流量计;实流检定;误差曲线;数值预测

References

Declaration:

The English version of this article is translated with the assistance of AI.

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