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『Vortex flowmeter for oil measurement』Related information(v cone flow meter|rotary gas meter|gallon meter|gear meter|metal tube rotameter|glass tube rotameter|nutating disk meter|transit time ultrasonic flow meter|wedge flow meter|pd meters|hydraulic flow meter|ultrasonic water flow meter|water flow meter|air flow meter|magnetic water flow meter|oxygen flow meter|gas flow meter|argon flow meter|air velocity meter|gasoline flow meter|fuel flow meter|ultrasonic water meter|digital water meter|nitrogen flow meter|solid flow meter|Oxygen tank flow meter|digital water flow meter|diesel fuel flow meter|steam flow meter|02 flow meter|compressed air flow meter|oil flow meter|liquid flow meter)
Can a vortex flowmeter measure oil?
There are many types of oil, and the vortex flowmeter can measure oil, but it depends on what kind of oil it is. If the temperature is too high, it cannot be measured. If the temperature is too high, a V-cone flowmeter can be chosen, and a V-cone flowmeter is preferred for measuring high-temperature thermal oil.
2. Will there be data fluctuations when using a vortex flowmeter to measure liquid flow during purging?
When using a vortex flowmeter to measure liquid flow during purging, there is a high probability that data fluctuations will occur. The amplitude and duration of the fluctuations are directly related to the purging pressure, gas-liquid mixing ratio, and flow field stability.
.1. Core reasons for fluctuations 1 Flow field is directly interfered: The measurement principle of vortex flowmeter is based on the linear relationship between vortex shedding frequency and flow velocity in a stable single-phase flow field. During blowing, high-speed airflow will destroy the original laminar or stable turbulent state of the liquid, forming a turbulent flow field in the vortex shedding area, resulting in irregular changes in vortex shedding frequency and directly outputting fluctuating flow data. 2. Mismatch of two-phase flow conditions: Compressed air is mixed into the process liquid during blowing, forming gas-liquid two-phase flow, while the calibration parameters of vortex flowmeter are only suitable for single-phase liquid conditions. The flow resistance and vortex generation conditions of two-phase flow are significantly different from those of single-phase liquid, and the flowmeter cannot accurately match the working conditions, inevitably resu
2. Fluctuations in Different Blowing Scenarios 1 Offline blowing (blowing after removing the flow meter): At this time, the flow meter is separated from the process pipeline, and the blowing airflow directly passes through the inside of the flow meter, causing more direct flow interference and more severe data fluctuations, even resulting in range jumps.
2. Online pressurized blowing: If the blowing pressure is strictly controlled slightly higher than the process liquid pressure, the gas-liquid mixing ratio is reduced, and the fluctuation amplitude is relatively controllable, but instantaneous reading jumps may still occur during periods with more bubbles mixed in.
III. Compliance Operation Suggestions 1 Prioritize offline blowing: Remove the flowmeter from the process pipeline and clean the blowing shell and front and rear straight pipe sections separately, which will not interfere with the online measurement flow field and can thoroughly clean the internal impurities. 2. Optimize parameters during online blowing: adjust the blowing gas source pressure to slightly higher than the liquid pressure in the pipeline, reduce the gas-liquid mixing ratio, and reduce the degree of flow field disorder. 3. Standardize data recording: During the blowing process, mark the abnormal data period separately, wait for 10-30 minutes after the blowing is completed (the larger the pipe diameter, the longer the waiting t