vortex flow meterThe theoretical basis for implementing flow measurement is the "Karman vortex street" principle in fluid mechanics, which places a non streamlined cylindrical body with an axis perpendicular to the flow direction in the flowing fluid, called a vortex generator. When a fluid flows around a vortex, two asymmetric but regular alternating vortex columns are generated downstream of the vortex, which is called the Karman vortex street.

Below is a brief explanation about the installation of vortex flowmeter, which should pay attention to the following aspects.

1、vortex flow meterReasonably choose the installation site and environment.

Avoid strong electrical equipment, high-frequency equipment, and strong power switch devices;Avoid the influence of high temperature heat sources and radiation sources, as well as places with strong vibrations and corrosion Environment and other factors should be taken into consideration, while also considering the convenience of installation and maintenance.

2、vortex flow meterThere must be sufficient straight pipe sections upstream and downstream.

If there are two upstream sensor installation points on the same plane90Bend, then: upstream straight pipe section ≥10DDownstream straight pipe section ≥5DIf there are two upstream sensor installation points on different planes90Bend, then: upstream straight pipe section ≥20DDownstream straight pipe section ≥5DThe regulating valve should be installed downstream of the sensor5DOutside, if it must be installed upstream of the sensor, the upstream straight pipe section of the sensor should not be less than50DDownstream should not be less than5D.

3、Vortex flowmeter inInstallation on horizontal pipelines is a common installation method for flow sensors.

When measuring gas flow, if the measured gas contains a small amount of liquid, the sensor should be installed at a higher position in the pipeline. When measuring liquid flow rate, if the measured liquid contains a small amount of gas, the sensor should be installed at a lower part of the pipeline.

4、vortex flow meterInstallation of sensors in vertical pipelines.

When measuring gas flow, the sensor can be installed on a vertical pipeline with no restrictions on the flow direction. If the tested gas contains a small amount of liquid, the gas flow should be from bottom to top. When measuring liquid flow rate, the liquid flow direction should be from bottom to top: this will not add additional liquid weight to the probe.

5、vortex flow meterThe pipeline adopts vibration reduction measures.

Sensors should be avoided as much as possible from being installed on pipelines with strong vibrations, especially lateral vibrations. If installation is necessary, vibration reduction measures must be taken upstream and downstream of the sensor2DInstall pipeline fastening devices at each location and add anti vibration pads.

6、vortex flow meterThe sensor is inverted in a horizontal pipeline.

This installation method is generally not recommended. This installation method is not suitable for measuring general gases and superheated steam. Can be used to measure saturated steam, suitable for measuring high-temperature liquids or situations that require frequent pipeline cleaning.

7、vortex flow meterInstallation of sensors on insulated pipelines.

When measuring high-temperature steam, the insulation layer should not exceed one-third of the height of the support.

8、vortex flow meterSelection of pressure and temperature measurement points.

According to the measurement requirements, when measuring pressure and temperature near the sensor, the pressure measuring point should be located downstream of the sensor3-5DThe temperature measurement point should be located downstream of the sensor6-8Dplace

9、vortex flow meterThe sensor is installed on the side of the horizontal pipeline.

Regardless of the type of fluid being measured, sensors can be installed on the upper side of horizontal pipelines, especially for measuring superheated steam, saturated steam, and low-temperature liquids. If conditions permit, side installation can be used to minimize the impact of fluid temperature on the amplifier.