Verification Technology for Metrological Performance of Secondary Standard Devices for Natural Gas Flow

doi:10.11885/j.issn.1674-5086.2022.01.24.08

Abstract

Abstract: In response to the issue of incomplete real-time verification technology for the measurement performance of the high-precision flow standard device used for tracing the flow value of custody transfer flow meter, a study is conducted on the influencing factors of natural gas flow secondary standard device measurement, real-time verification technical indicators and methods. Large data statistical analysis technology is used in the study, and innovative real-time verification technical indicators and verification methods for the measurement performance of natural gas flow secondary standard device are proposed. We use a combined turbine working standard, and implement a combination of one-on-one verification, many-to-one verification, many-to-many verification, and total amount verification to monitor six technical indicators, including natural gas heat generation fluctuation rate, pressure and temperature weight coefficient, temperature difference between nozzles, nozzle differential pressure, and secondary standard volume flow deviation and repeatability of the turbine working standard. And we make an accurate and real-time verification of the metrological performance of the secondary standard device used for calibrating high-precision flow meters, monitor the process quality of flow meter calibration, and ensure the accuracy and reliability of each flow meter calibration result. The research results have certain guiding significance for the quality control of natural gas flow standard devices.

Key words: flow, standard device, metering performance, verification indicators, verification method

CLC Number:

TE348

PENG Liguo, HE Jinpeng, ZHOU Gang, WAN Yuanzhou. Verification Technology for Metrological Performance of Secondary Standard Devices for Natural Gas Flow[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2024, 46(2): 145-154.

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URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.11885/j.issn.1674-5086.2022.01.24.08

http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2024/V46/I2/145

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