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『Standard vortex flowmeter』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)
1. Flow calculation of vortex flowmeter
The flow calculation of vortex flowmeter is mainly achieved through the following steps and formulas: measuring the frequency of vortex occurrence: The vortex flowmeter first measures the frequency of vortex occurrence, which is directly related to the average flow velocity of the measured medium. The formula for calculating frequency is: f=Sr * U1/d=Sr * U/m, where Sr is the Strouhal number, reflecting the strength of the vortex; U1 is the average flow velocity on both sides of the vortex generator; D is the width of the upstream face of the vortex generator; M is the ratio of the bow shaped area on both sides of the vortex generator to the cross-sectional area of the pipeline. Calculate volumetric flow rate: The formula for calculating volumetric flow rate Li Zao is: qv=π * D2 * U/4=π * D2 * md * f/4 * Sr, where D is the diameter of the body. By using this formula, the measured vortex frequency can be converted into actual volumetric flow rate. Determination of instrument coefficient: The instrument coefficient hall disturbance K, which corresponds to the number of pulses per cubic meter of flow, is an important parameter for vortex flowmeters. The formula for calculating the instrument coefficient K is: K=)? 1. It reflects the characteristics of the flow meter. Considering calibration and compensation under different conditions: In practical applications, vortex flowmeters need to measure different parameters under standard and working conditions, such as volume flow rate, absolute pressure, thermodynamic temperature, and gas compression coefficient. These data help calibrate and compensate for the performance of flow meters under different conditions, ensuring measur
2. In depth exploration of vortex flowmeter structure
Vortex flowmeter is a precision instrument for fluid flow measurement based on the Karman vortex principle. It mainly consists of sensors, converters, measuring tubes, and auxiliary components. Its structural design embodies the engineering philosophy of "simplicity contains precision" and is continuously optimized with the development of technology.
.First, the core structure of the sensor vortex generator: a non streamlined cylindrical object inserted into the fluid pipeline and imitated, whose geometric shape (such as triangular columns, cylinders) directly affects the stability of vortex separation.
. When fluid flows through, two columns of staggered vortices are generated on both sides of the cylinder. The separation frequency of vortices is proportional to the flow velocity and inversely proportional to the width of the cylinder. This is the core application of the Karman vortex street principle. Detecting chaotic fiber components: including detection probes and detection amplifiers, converting physical signals into electrical signals by sensing pressure or frequency changes generated by vortex separation. The detection probe and vortex generator adopt a separate structure, effectively avoiding the problem of pressure hole blockage and improving reliability. Connecting rod: Connect the detection object and the de