Standard Device of Natural Gas Real-flow Detection
Abstract
In my country's primary energy consumption structure, the proportion of natural gas is increasing. Accurate and reasonable measurement of natural gas is one of the important links in natural gas utilization, which has huge social and economic benefits. The Chongqing branch of the National Petroleum and Natural Gas Large-flow Detection Station has established a set of standard equipment for real-flow detection of natural gas. The device uses 10 critical flow venturi nozzles with different throat diameters in parallel, and uses the 1.6 MPa natural gas stored in the upstream 5500 m³ spherical tank as the verification gas. One of the biggest advantages of this device is that the pressure of the upstream natural gas source is relatively stable and the gas quality is clean. There is no need to add a voltage stabilizer and a purification device, and it can realize the verification of gas flow meters such as ultrasonic, turbine, and waist wheel. The working pressure of the device is (0.1 ~ 1.2) MPa, and the standard flow qN is (14 ~ 19000) m³/h. The measurement uncertainty of the device is evaluated, and the uncertainty of the device is Ur = 0.28 %, k = 2. A SICK DN200 gas ultrasonic flowmeter was calibrated using this testing standard device and the uncertainty of the measurement results was analyzed, and Ur = 0.32 %, k = 2.
Event details
- Event
- FLOMEKO 2022
- Technical Committee
- TC9
- lich@nim.ac.cn
- Place
- Chongqing, CHINA
- Time
- 1 November 2022 - 4 November 2022
- Website
- http://flomeko2022.msmk.tech/c/index.html