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Vortex Flow Meters

Vortex Flow Meter Vortex Flow Meter

Vortex Flow Meters

The Vortex flow meter integrating flow, temperature and pressure detection function, and can automatically compensate for temperature, pressure, compression factor, such as petroleum, chemical, electric power, metallurgy industry ideal instrument used in the measurement of gas.

The vortex flowmeter is used for measuring the flow velocity of gases or liquids in pipelines flowing full. The measuring principle is based on the development of a Karman vortex shedding street in the wake of a body built into the pipeline. The periodic shedding of eddies occurs first from one side and then from the other side of a bluff body (vortex-shedding body) installed perpendicular to the pipe axis. Vortex shedding generates a so called "Karman vortex street" with alternating pressure conditions whose frequency is proportional to the flow velocity.

Vortex flow meters are widely used in industrial applications to measure the flow rate of liquids, gases, and steam. They operate based on the principle of fluid-induced vortex shedding, where alternating vortices are created behind a bluff body placed in the flow path. By measuring the frequency of these vortices, vortex flow meters can accurately determine the flow velocity and calculate the volumetric or mass flow rate.

How do Vortex Flow Meters Work?

A typical vortex flow meter consists of a sensor body with a bluff body or shedder bar positioned in the fluid stream. As the fluid flows past the bluff body, vortices are formed alternately on both sides, creating a vortex street.

The vortex shedding frequency is directly proportional to the fluid velocity. The flow meter contains a piezoelectric crystal or a pressure sensor located downstream of the bluff body. This sensor detects the pressure fluctuations caused by the vortex shedding and converts them into electrical signals.

The frequency of the electrical signals is directly related to the flow velocity. By analyzing these signals, the vortex flow meter calculates the flow rate using appropriate algorithms, taking into account factors such as fluid density and temperature.

Features and Benefits of Vortex Flow Meters

Wide range of applications: Vortex flow meters are suitable for measuring the flow of various liquids, gases, and steam in industries such as oil and gas, chemical processing, power generation, water and wastewater, and HVAC systems.

High accuracy: Vortex flow meters offer excellent accuracy across a wide range of flow rates, making them suitable for both low and high flow applications.

Wide turndown ratio: These flow meters have a high turndown ratio, allowing them to measure flow rates accurately even when the flow varies significantly.

Minimal pressure drop: Vortex flow meters have a relatively low-pressure drop, minimizing energy losses and making them energy-efficient options for flow measurement.

No moving parts: Vortex flow meters have no moving parts, reducing the need for maintenance and minimizing the risk of mechanical failure.

Temperature and pressure compensation: Advanced vortex flow meters can compensate for changes in fluid temperature and pressure, ensuring accurate flow rate measurements in varying operating conditions.

Digital communication capabilities: Many vortex flow meters are equipped with digital communication protocols such as HART, Modbus, or Foundation Fieldbus, allowing for easy integration into control systems and enabling remote monitoring and configuration.

Applications of Vortex Flow Meters

Vortex flow meters find numerous applications across different industries, including:

Steam measurement: Vortex flow meters accurately measure steam flow rates in power plants, industrial boilers, and steam distribution networks.

Gas flow measurement: They are used for natural gas flow measurement in pipelines, compressed air systems, and gas distribution networks.

Liquid flow measurement: Vortex flow meters are employed in water and wastewater treatment plants, chemical processing, and oil and gas refineries for measuring the flow of liquids such as water, oil, chemicals, and solvents.

HVAC systems: Vortex flow meters are used in heating, ventilation, and air conditioning (HVAC) systems to measure the flow of air and ensure proper system performance.

Vortex flow meters provide accurate and reliable flow rate measurement for liquids, gases, and steam in a wide range of applications. With their high accuracy, wide turndown ratio, and minimal pressure drop, vortex flow meters are valuable instruments in industries requiring precise flow measurement. By enabling effective process control, energy optimization, and system efficiency, vortex flow meters contribute to improved operational performance and cost savings.