Do you know the two ways of calibrating gas turbine flowmeters with real flow?

Do you know that for gas turbine flowmeters, there are two ways to calibrate the real flow. Do you know which two methods are? Let me introduce you to everyone. Natural gas is a high-quality, green and clean low-carbon energy. With the increasingly stringent requirements for economic development, energy consumption growth and carbon dioxide emission reduction, the effective development and utilization of natural gas has become one of the important paths for my country to promote the revolution of energy production and consumption. It is estimated that by 2020, the apparent consumption of natural gas in my country will exceed 3500×108m3, and the amount of imported natural gas will exceed 1200×108m3. Improving the measurement accuracy of natural gas custody transfer is the key to objectively and impartially safeguarding the legitimate economic interests of both parties. Gas turbine flowmeters are widely used in natural gas custody transfer because of their high accuracy, good repeatability, no zero drift, strong anti-interference, and wide range. Large, the gas physical property changes caused by different media and different working conditions have an impact on the accuracy of the gas turbine flowmeter; another disadvantage is that the calibration characteristics cannot be maintained for a long time. With the large-scale construction of the gas transmission system pipeline network, it must be regularly Real flow calibration of flow meters used for natural gas trade settlement. At present, there are two main ways to calibrate the flowmeter in domestic real flow: (1) the direct discharge scheme using natural gas as the working medium, using the own pressure and gas volume upstream of the gas pipeline to calibrate the flowmeter under positive pressure, and then the working medium enters the low pressure Pipeline or downstream low pressure area; (2) Calibration under normal pressure with air as the working medium. In order to be as close as possible to the actual working conditions of the natural gas flowmeter, as of July 2019, it is used to solve the problem of real-flow calibration and quantity transmission traceability of the high-pressure natural gas flowmeter. However, with the rapid growth of natural gas supply and demand, the production capacity of natural gas flow verification stations cannot meet the periodic verification requirements of medium and high pressure natural gas flowmeters on urban pipeline networks and regional gas transmission and distribution trunk lines. The accuracy and validity of a large number of gas turbine flowmeters that are involved in trade settlement and are in the category of mandatory verification cannot be guaranteed, and can only be sent to legal metrological verification institutions for calibration under normal pressure air. Therefore, the accuracy differences of gas turbine flowmeters under different media and different working conditions have attracted the attention of the natural gas industry and flow measurement academia. In particular, it is controversial whether the data results or verification conclusions using atmospheric air calibration are suitable for natural gas gas turbine flowmeters. The company has a calibration device for calibration of the 0.15-level nozzle certified by the Chinese Academy of Sciences in Beijing. Every instrument that leaves the factory must be calibrated by the calibration device. The useless life is as long as 10 years. The Kunke brand maintains maximum customer satisfaction, and obtains 300% satisfaction from users. When users buy with confidence and use them comfortably, welcome to inquire, or log in to Kaidi's official website for details.
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