Precautionary installation instructions for swirling vortex flowmeters

The precession vortex flowmeter adopts the latest micro-processing technology and has the advantages of strong functions, wide flow range, simple operation and maintenance, and easy installation and use. The precession vortex flowmeter integrates flow, temperature and pressure detection functions and can perform temperature, Automatic pressure compensation, precession vortex flowmeter main technical indicators have reached the advanced level of similar foreign products. Precession vortex flowmeter is widely used in petroleum, chemical, electric power, metallurgy, coal and other industries measuring various gases.

Today we come to understand the working principle of the precession vortex flowmeter. When the fluid passes through the vortex generator composed of spiral blades, the fluid is forced to rotate violently around the generating shaft to form a vortex. When the fluid enters the diffusion section, the vortex flow is subjected to a back flow, and secondary rotation is started to form a gyro-type eddy precession phenomenon. The precession frequency is proportional to the flow rate and is not affected by the physical properties and density of the fluid. The detection element measures the precession frequency of the secondary rotation of the fluid and knows the flow rate. And precession vortex flowmeters can achieve good linearity over a wide range of flow rates.

When the precession vortex flowmeter is installed for the first time, if the pipeline under test does not allow the flow to stop, the installation and sealing of the “mounting base” on the pipeline can be completed before the pipeline has been opened, and then the ball valve is installed. Drill with a continuous drilling rig. After drilling, remove the continuous drilling rig and install the sensor; or remove the continuous rig and temporarily close the ball valve until the sensor is installed. Precession vortex flowmeter power supply is powered by 220V, 24V and lithium battery. The meter can display instantaneous flow and cumulative flow. When the user is used to measure large-diameter pipeline, and when the exact requirements for measurement are different, we can choose this instrument as measurement and measurement. When pre-rotating vortex flowmeter selection, it is necessary to determine whether the medium temperature, pressure, and flow range meet the measurement requirements of the instrument. We must pay attention to the selection of the precession vortex flowmeter and pay attention to the correct installation of the precession vortex flowmeter and the swirl flow to the precession. The plan creates a good operating environment.

When the fluid flowing in the axial direction enters the inlet of the flow sensor, the vane forces the fluid to rotate, and thus generates a vortex flow in the center of the vortex generator. The swirling flow swirls in the venturi tube and reaches the contraction section. The sudden throttle makes the swirl flow Acceleration, when the vortex flow enters the diffusion section, the precession-type secondary rotation is forced by the effect of the backflow.

Precession vortex flowmeters, if not properly installed and maintained, can affect measurement accuracy and other performance. The precession vortex flowmeter should periodically clean the probe of the vortex flowmeter. During the inspection, it was found that the individual probe detection holes have been blocked by dirt and even wrapped in plastic cloth, which will affect the normal measurement. Check the grounding and shielding regularly to eliminate outside interference. Install the probe in a damp environment. It should be dried once a day or treated with moisture. Since the probe itself is not damp-proof at the end, it will affect the operation after getting wet. The management of the data data of the precession vortex flowmeter instrument should be given sufficient attention to facilitate future work. The precession of the vortex flowmeter manufacturers reminds everyone to check regularly to avoid damage.