Installation method of vortex flowmeter| multiphase meter

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1. Selection of the correct installation point for vortex flowmeter

The selection of the correct installation point for vortex flowmeter needs to comprehensively consider environmental conditions, pipeline conditions, fluid characteristics, and measurement requirements. The specific points are as follows: avoid interference sources and harsh environments. The installation point should be far away from strong power equipment, high-frequency equipment, and strong power switches to avoid electromagnetic interference; Avoid high temperature heat sources, radiation sources, and highly corrosive environments to prevent sensor performance damage; At the same time, sufficient installation and maintenance space should be reserved to ensure ease of operation. Horizontal pipeline installation specifications for gas measurement: If the gas contains a small amount of liquid, the sensor should be installed at a higher position in the pipeline to prevent liquid accumulation from affecting the measurement. Liquid measurement: If the liquid contains a small amount of gas, the sensor should be installed at a lower part of the pipeline to avoid gas interference. Concentricity requirement: The upstream and downstream piping must be concentric with the sensor, with a coaxial deviation not exceeding 0.5DN, to ensure stable fluid flow. The length of the straight pipe section requires double 90 ° elbows (on the same plane): the upstream straight pipe section is ≥ 25D, and the downstream is ≥ 5D. Double 90 ° elbows (on different planes): the upstream straight pipe section is ≥ 40D, and the downstream is ≥ 5D. The position of the regulating valve: If the regulating valve is downstream of the sensor, a distance of at least 5D should be

maintained; If it is upstream, the upstream straight pipe section should be ≥ 50D, and the downstream section should be ≥ 5D to reduce the impact of turbulence. Vibration reduction measures sensors should be avoided from being installed on pipelines with strong vibrations, especially lateral vibrations. If installation is necessary, pipeline fastening devices should be installed at the 2D upstream and downstream locations, and anti vibration pads should be added to stabilize the measurement signal. Horizontal pipeline side installation is suitable for measuring superheated steam, saturated steam, and low-temperature liquids. Side mounting can reduce the impact of fluid temperature on the amplifier and improve measurement accuracy, especially recommended when conditions permit. Vertical pipeline installation gas measurement: flow direction is not limited, but if the gas contains a small amount of liquid, it needs to flow from bottom to top to prevent liquid deposition. Liquid measurement: It must flow from bottom to top to avoid additional weight of the liquid being applied to the probe, which may cause measurement errors. Location of pressure and temperature measurement points: The pressure measurement point is located 3-5D downstream of the sensor to ensure accurate pressure measurement and is not affected by fluid turbulence interference. Temperature measurement point: located at 6-8D downstream of the sensor to avoid reading deviation caused by insufficient stability of the temperature field. Horizontal pipeline inversion is only suitable for specific scenarios: measuring saturated steam, high-temperature liquids, or pipelines that require frequent cleaning. When measuring high-temperature steam, the height of the ins

Installation method of vortex flowmeter

1. Selection of the correct installation point for vortex flowmeter

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