Spiral rotor flowmeter | What are the specifications and models of the flowmeter?

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1. Double rotor flowmeter II, working principle

Double rotor flowmeter is a uniquely designed volumetric flowmeter specifically used for measuring liquid flow rate. Its working principle is based on the meshing of a pair of spiral rotors with special tooth profiles, and there is no relative sliding between the two, without the need for synchronous gears. The rotational power source of the rotor comes from the small pressure difference generated by the fluid at the inlet and outlet. As shown in the figure below, at a certain moment on a certain cross-section, although a pair of rotors experience different fluid rotational torques, the resultant torque of the rotational torques on all cross-sections remains equal for both rotors. Therefore, the two rotors rotate at a constant speed and equal torque to ensure balanced displacement without pulsation. Each rotor can output 8 times the volume of the cavity per revolution, therefore, the rotational speed of the rotor is proportional to the cumulative flow rate of the fluid, and the rotational speed of the rotor is proportional to the instantaneous flow rate of the fluid. The rotational motion of the rotor is transmitted to the meter counter through a magnetic coupling, and the counter displays the flow rate through the flowmeter (flowing through the pipeline). This design enables the dual rotor flowmeter to have high precision, stability, and reliability, making it suitable for various industrial applications. Dual rotor flow meters can be divided into two forms based on their structure: standard type and axial flow type. The standard dual rotor flowmeter is shown in the figure and is suitable for general liquid flow measurement. Axial flow dual rotor flowmeter has h

2. Technical parameters of spiral rotor flowmeter

Accuracy: 0.5 (0.2) level Pressure: Zao Ju 1.6MPa, 2.5MPa, 4.0MPa Temperature: -20~60 ℃, 60~110 ℃, 110~200 ℃ nominal diameter: DN25~Padan DN300 Main component material: Body: ZG25 Rotor: HT250 Bearing: Graphite bearing stool He Rang

3. What are the common flow sensors?

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There are many types of common flow sensors, mainly divided into the following categories:

1. Code return differential flow meters, including standard orifice flow meters, multi delayed orifice balance flow meters, wedge flow meters, bend flow meters, etc., calculate flow by measuring the pressure difference formed by the medium in the pipeline.

Secondly, volumetric flow meters, including elliptical gear flow meters, spiral dual rotor dry fiber flow meters, waist wheel flow meters, scraper flow meters, etc., determine flow rate by accurately measuring the volume change of fluid in a fixed volume.

III. Velocity flow meters, such as target flow meters, electromagnetic flow meters, ultrasonic flow meters, vortex flow meters, turbine flow meters, etc., indirectly calculate flow by measuring the flow rate of the medium.

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