Vortex Flow Planning Commission | How to Adjust the Measurement Accuracy of Vortex Flow Meter | Direct supply from Changzhou quality flowmeter manufacturer

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The difference between vortex flowmeter and vortex flowmeter is mainly reflected in their working principles.
1. Working principle of vortex flowmeter: The vortex flowmeter is based on the Kalman vortex principle.
. When a fluid passes through a narrow slit or obstacle, it forms vortices on both sides of the object. The development and dissipation process of these eddies is periodic, and their frequency is directly related to the flow velocity of the fluid. By detecting the frequency of these vortices, the flow velocity can be calculated, thereby obtaining the flow rate value. This phenomenon is called vortex street, where vortices form an ordered arrangement in the fluid, similar to buildings on both sides of a street.
2. Working principle of vortex flowmeter: The vortex flowmeter adopts the principle of spiral inlet vortex.
. Install a vertical twisted blade in the pipeline, which will rotate and form a vortex when the fluid passes through. These vortices form near the centerline of the pipeline, and the center of the vortices rotates around the centerline while expanding the rotation radius as the fluid moves forward, forming a spiral motion similar to a conical spiral. For the observation point on the wall of the residual pin behind the vortex generator, the velocity of the fluid will periodically change, and its frequency is proportional to the flow velocity of the fluid. By detecting this frequency, the flow velocity can be determined and the flow rate value can be further calculated.

2. How to determine the appropriate range of vortex flowmeter diameter for working conditions

The core logic of determining the range of vortex flowmeter diameter is to match the flowmeter perfor

mance around the measured parameters of working conditions, and the core is to make the normal flow fall within the range of 30% -80% of the flowmeter and the flow rate meet the requirements.

Firstly, clarify the basic parameters of the operating conditions. Flow data: It is necessary to calculate the minimum flow rate, normal flow rate, and maximum flow rate of the actual operating conditions, which is the core basis of selection. The minimum flow rate should ensure that the flowmeter can start measuring normally, and the maximum flow rate should not exceed the upper limit of the range to avoid damaging the equipment. Fluid properties: Clearly determine whether the fluid is liquid, gas, or steam, and record the density and viscosity of the fluid. For example, if the viscosity of crude oil is much higher than that of water, more margin should be reserved when selecting. Operating environment: Record the working temperature and pressure of the fluid. In high temperature and high pressure scenarios, the fluid density will change significantly, which will directly affect the flow calculation results Based on the parameters, calculate and select the standard diameter and flow rate matching calculation: the recommended flow rate range for liquids is 0.5-7m/s, and for gases is 5-50m/s. Use the formula D=\ sqrt {\ frac {4Q} {\ pi v \ times3600} \) to calculate the required pipe diameter, where Q is the normal flow rate (unit m ³/h) and v is the recommended flow rate for the corresponding fluid. Finally, choose an industrial standard pipe diameter that is close to the calculated result and reserve future expansion space. If it is expected that the flow rate will increase by 10% -30% in subsequent operating conditions, you ca

Vortex Flow Planning Commission | How to Adjust the Measurement Accuracy of Vortex Flow Meter

2. How to determine the appropriate range of vortex flowmeter diameter for working conditions

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