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Steam vortex flowmeters 1 and vortex flowmeters reasonably select the installation site and environment.
Avoid strong power equipment, high-frequency equipment, strong power switch equipment; avoid high-temperature heat sources and radiation sources, avoid strong vibration and strong corrosion environment, etc., at the same time to consider the installation and maintenance.
2. The vortex flowmeter must have enough straight sections upstream and downstream.
If there are two 90 in the same plane upstream of the sensor mounting point. Elbow, then: the upstream straight section ≥ 25D, the downstream straight section ≥ 5D.
If there are two 90 on different planes upstream of the sensor mounting point. Elbow, then: upstream straight section ≥ 40D, downstream straight section ≥ 5D.
The regulating valve shall be installed outside the sensor at 5D downstream. If it must be installed upstream of the sensor, the upstream straight section of the sensor shall not be less than 50D, and the downstream shall be not less than 5D.
3. The piping upstream and downstream of the vortex flowmeter installation point should be concentric with the sensor, and the coaxial deviation should not be less than 0.5DN.
4. Vortex flowmeter pipelines take vibration reduction measures.
The sensor should not be installed on the vibrating pipeline as much as possible, especially the lateral vibration. If it is necessary to install, vibration reduction measures must be taken. Pipe fastening devices are installed at the upstream and downstream 2D ​​of the sensor, and anti-vibration pads are added.
5. The installation of vortex flowmeters on horizontal pipes is the most 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 in the higher part of the pipeline.
When measuring the liquid flow, if the measured liquid contains a small amount of gas, the sensor should be installed in the lower part of the pipeline.
6. Vortex flowmeter sensors installed in vertical pipes.
When measuring gas flow, the sensor can be mounted on a vertical pipe with unlimited flow. If the gas to be measured contains a small amount of liquid, the gas flow should be directed upwards.
When measuring the liquid flow, the flow direction of the liquid should be from bottom to top: this will not add extra weight to the probe.
7. The vortex flowmeter sensor is installed on the side of the horizontal pipeline.
No matter what kind of fluid is measured, the sensor can be installed on the side of a horizontal pipeline, especially for superheated steam, saturated steam and cryogenic liquids. If conditions permit, it is better to use side loading, so that the temperature of the fluid has little effect on the amplifier.
8. Vortex flowmeter sensor is flipped in a horizontal pipe.
This installation method is not recommended under normal circumstances. This installation method is not suitable for measuring general gases and superheated steam. It can be used to measure saturated steam and is suitable for measuring high-temperature liquids or situations where pipelines need to be cleaned regularly.
9. The vortex flowmeter sensor is installed on the insulation pipe.
When measuring high-temperature steam, the insulation should not exceed a third of the height of the stand.
10. Vortex flowmeter pressure measurement point and temperature measurement point selection.
According to the need of measurement, when measuring the pressure and temperature near the sensor, the pressure measurement point should be at the 3-5D downstream of the sensor, and the temperature measurement point should be at the 6-8D downstream of the sensor.
Steam vortex flowmeter installation points
The correct selection of steam vortex flowmeters can ensure better use of vortex flowmeters. What type of vortex flowmeter should be used to determine the physical properties and chemical properties of the fluid being measured? The vortex flowmeter's diameter, flow range, lining material, electrode material, and output current can all be adapted to the properties of the fluid being measured and the flow measurement requirements.