Technical requirements and precautions for measuring natural gas with precession vortex flowmeter

Abstract: The technical requirements and precautions for the measurement of natural gas by the precession vortex flowmeter are provided by the excellent flowmeter and flowmeter manufacturers and quotation manufacturers. 1. Precession vortex flowmeter Requirements for the measured gas flow conditions 1. The measured gas should be a single-phase, circular tube flow that continuously flows through the pipeline. 2. Before the gas flows through the flowmeter, its velocity must be parallel to the axis of the pipeline, and there must be no vortex flow. 3, the airflow should be. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following are the technical requirements and precautions for measuring natural gas with precession vortex flowmeters. 1. Requirements for the measured gas flow conditions of the precession vortex flowmeter 1. The measured gas should be a single-phase, circular tube flow that continuously flows through the pipeline. 2. Before the gas flows through the flowmeter, its velocity must be parallel to the axis of the pipeline, and there must be no vortex flow. 3. The airflow should be subsonic and non-pulsating, and its flow rate changes slowly with time. 2. Installation requirements for precession vortex flowmeter Precession vortex flowmeter does not have too many special requirements for process installation and use environment, but any type of flow measurement instrument has such a commonality, that is to avoid vibration and high temperature as much as possible Interfering components with the flow state of the environment (such as compressors, separators, pressure regulating valves, large and small heads, manifolds, elbows, etc.), keep the inner wall of the straight pipe section before and after the instrument smooth and straight, and ensure that the measured medium is a clean single-phase fluid, etc. . 3. Matters needing attention in the installation and use of the precession vortex flowmeter The precession vortex flowmeter has no mechanical moving parts, is small in size, has corrosion resistance, and has stable performance; it can directly display the working pressure, temperature, flow rate of the medium and the standard state. It has the advantages of wide range and small measurement error, and has been widely used in the production measurement of oil and gas wells and the sales measurement of natural gas. In field applications over the years, we believe that this flowmeter is most suitable for relatively clean dry gas measurement, and has gradually become the first choice for small and medium gas measurement. To ensure the accurate measurement of the precession vortex flowmeter and reduce the measurement error, please note: 1. Reasonable selection. Do not make the actual minimum flow rate QVmin lower than the lower limit of the flow range of the selected diameter flowmeter. 2. Correct installation There should be at least a 10D straight measuring straight pipe section upstream of the flowmeter. The inner wall of the straight pipe section should be smooth, and there should be no steps. The welding seam of the connecting flange should be smoothed, and the flange gasket should not protrude into the pipeline. The installation direction of the flowmeter cannot be reversed. Tests have proved that any unreasonable installation will result in a low flow meter measurement value. 3. Keep away from the vibration source, or install piers upstream and downstream of the flowmeter to avoid the influence of pipeline vibration. Avoid the interference of the strong magnetic field to the flowmeter chip. 4. The air quality is relatively clean, especially the two-phase flow of liquid and gas cannot occur; when the air quality is dirty, the flowmeter should be cleaned immediately. 5. Reduce the influence of airflow pulsation A buffer tank can be installed in front of the flowmeter, or the length of the straight pipe section upstream of the flowmeter can be lengthened. 6. Carry out metering verification on the precession vortex flowmeter in time to ensure the accurate and reliable value. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Technical requirements and precautions for measuring natural gas with precession vortex flowmeter'

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