Study on Verification Method of Metering Calorific Value of Pipeline Natural Gas
LIU Zhe1,2,WU Yan1,2,JIANG Xing-peng1,2,ZHOU Yang3,SONG Chao-fan1,2,ZHOU Zhen-dong1,2
1. Nanjing Branch of National Station of Petroleum & Natural Gas Flow Measurement, Nanjing, Jiangsu 210058, China
2. Guangzhou Branch of National Station of Petroleum & Natural Gas Flow Measurement, Guangzhou, Guangdong 510940, China
3. National Pipe Network Group Production and Operation Department (Oil and Gas Control Center), Beijing 100010, China
Abstract The methods of on-line chromatograph analysis, off-line analysis and assigned component analysis for indirect calorimetry were studied and applied to the quality check of composition analysis results. Ultrasonic flowmeter sound velocity test is carried out in accordance with the prescribed method of GB/T 30500. When the deviation between measured sound velocity and calculated sound velocity is within ±0.15%, the analysis data of natural gas composition meets the requirements. Select configuration online chromatographic analyzer station, according to the results of chromatograph dynamic trend analysis, when the A level measurement system more than online calorific value fluctuation control limit (maximum permissible error of plus or minus 0.5%), determine the chromatograph analysis results appear problem, this method can effectively monitor the calorific value data, to ensure pipeline gas in the process of energy metering data accurate and reliable.
LIU Zhe,WU Yan,JIANG Xing-peng, et al. Study on Verification Method of Metering Calorific Value of Pipeline Natural Gas[J]. Acta Metrologica Sinica, 2020, 41(12A): 47-51.
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