Vortex flowmeter is a commonly used flow measurement instrument, and its detailed introduction is as follows:

Working Principle:

The vortex flowmeter utilizes the Karman vortex principle for flow measurement. When a fluid flows through a non streamlined object placed in a pipeline (such as a vortex generator), vortices will alternate on both sides downstream, forming two asymmetric and regular vortex columns, which is called Karman vortex street. According to the theory of fluid mechanics, the frequency of a vortex is directly proportional to the velocity of the fluid, and the flow rate of the fluid can be calculated by measuring the frequency of the vortex.

Structural characteristics:

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bluff bodyIt is the core component of vortex flowmeter, and its shape and size will affect the generation and stability of vortices. Common shapes include cylinders, triangular cylinders, etc. It is usually installed at the center of the pipeline to ensure that the fluid flows evenly around it and generates vortices.

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sensorUsed to detect signals generated by vortices. Generally, piezoelectric sensors or capacitive sensors are used. When a vortex passes through, the sensor will produce periodic pressure or capacitance changes, thereby converting the mechanical signal of the vortex into an electrical signal.

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amplifierAmplify and process the weak electrical signals detected by the sensor for subsequent measurement and display. Amplifier usually has anti-interference ability, which can filter out external electromagnetic interference and noise signals, ensuring the accuracy of measurement.

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display instrumentUsed to display flow measurement results, it can usually display instantaneous flow and cumulative flow. Some advanced display instruments also have data...

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