Precession vortex flowmeter structure

     Precession vortex flowmeter can be widely used in petroleum, chemical, electric power, metallurgy, urban air supply and other industries to measure various gas flows. As the fluid enters the flow sensor, the guide vanes force the fluid into a violent vortex flow. 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 secondary rotation precession frequency of the fluid to obtain good linearity over a wide range of flow rates. The signal is amplified by a preamplifier, filtered, and converted into a pulse signal proportional to the flow velocity. The signal is then sent to the microprocessor for integration processing along with temperature, pressure, and other detection signals. Measurements are then displayed on the LCD screen. Results (instantaneous flow, cumulative flow and temperature, pressure data).
     Precession vortex flowmeter structure:
     1, vortex body
     Made of aluminum alloy, with an angled spiral blade, which is fixed to the front of the housing contraction section, forcing the fluid to produce a strong swirling flow.
     2, the shell
     It has its own Flange and a certain shape of fluid channel. According to different working pressure, the shell material can be cast aluminum alloy or Stainless Steel.
     3, smart flow meter calculator
     It is composed of temperature and pressure detection analog channels, flow detection digital channels, micro-processing units, liquid crystal drive circuits and other auxiliary circuits, and is equipped with an external transmission signal interface.
     4, temperature sensor
     The Pt100 platinum resistance is a temperature-sensitive element, and its resistance value corresponds to the temperature within a certain temperature range.
     5, pressure sensor
     A piezoresistive diffusion silicon bridge is used as a sensing element, and its bridge arm resistance will undergo expected changes under the action of external pressure. Therefore, under a certain excitation current, the potential difference between its two output ends is proportional to the external pressure.
     6, piezoelectric crystal sensor
     Installed in the throat near the expansion section of the housing, the frequency signal of the vortex precession can be detected.
     7, derotator
     Fixed in the outlet section of the housing, its role is to eliminate vortex flow to reduce the impact on the downstream instrument performance.
     Huajiang Automation can provide you with professional precession vortex flowmeter selection recommendations and reliable precession vortex flowmeter products. Any questions can be caused, we will have professional technical staff to help you answer, hoping to bring you help !