Dual rotor flowmeter technology

The dual-rotor flowmeter, which belongs to the current generation of volumetric flowmeters, is a precision instrument used for the measurement and control of liquid flow in pipelines . Scope of application: Xi'an Qinwei dual-rotor flowmeter is widely used in petroleum, chemical, metallurgy, power , transportation, ships, oil depots, docks, tank trucks and other departments, especially suitable for the measurement flow of industrial liquids such as crude oil, refined oil, light hydrocarbon The meter can be indicated on the spot, the word code can be directly read and can be equipped with a transmitter, which outputs electrical pulse signals, which are remotely transmitted to the secondary instrument or computer to form an automatic control, automatic detection and data processing system. Features: Suitable for thin oil, light oil, heavy oil, crude oil with large sand content and large water content, and the viscosity range of the measured liquid is wide. The liquid flow through the flowmeter is large, and the flow rate is about twice that of the ordinary volume meter with the same diameter. Long service life, high accuracy and strong reliability. The pressure loss is extremely small. The longest cable remote transmission distance is 1000 meters, and the pulse signal output is N = 0.1L (one pulse is 1N), which can be directly connected to the computer. Intrinsically safe explosion-proof Iaâ…¡CT6 (intrinsically safe type); explosion-proof dâ…¡BT6 (explosion-proof type); protection IP56. Working principle: Xi'an Qinwei dual-rotor flowmeter is directly meshed through a pair of special toothed spiral rotors. There is no relative sliding, no synchronization gears are required, and the rotor is rotated by a small pressure difference at the entrance and exit. At the same time, although the rotational torque of each rotor on the same cross-section is different, the combined torque of the two rotors on all cross-sections is equal. Therefore, the two rotors rotate at the same speed and torque, and the displacement is balanced without pulsation. The screw rotor can output 8 times the volume of the cavity per revolution. Therefore, the number of revolutions of the rotor is proportional to the cumulative flow of the fluid, and the speed of the rotor is proportional to the instantaneous flow of fluid. The rotation speed of the rotor is transmitted to the meter counter through the magnetic coupling, which shows the flow through the flow meter (through the pipeline)