Dual rotor flowmeter - turbine flowmeter

1、 Purpose:
(Also known as spiral rotor flowmeter or screw flowmeter) is a precision instrument used for measuring and controlling liquid flow in pipelines. Flow meters can be made of different materials and are widely used in industries such as petroleum, chemical, light industry, commerce, and scientific research. They are particularly suitable for measuring industrial liquids such as crude oil, refined oil, and light hydrocarbons, and are currently the first generation of volumetric flow meters in China. This flowmeter is equipped with a pointer, a dial counter, an accumulated flow indicator, and can output electrical pulse signals for secondary instruments or computer detection, automatic control, and data processing.
2、 Characteristics:
1. High measurement accuracy, wide flow range, and good repeatability.
2. The spiral rotor rotates uniformly, experiences minimal vibration, and has a long lifespan.
3. Not sensitive to changes in viscosity of the measured liquid, especially suitable for measuring liquids with higher viscosity.
4. Simple structure, small external dimensions, and light weight.
5. Easy to install.
3、 Model Naming Explanation

4、 Product working principle and structure:
1. Working principle
Dual rotor flowmeterIt belongs to the positive displacement flowmeter, which is composed of a closed cavity (shaded area in the figure) formed by the slot part of the spiral rotor (measuring element) and the inner wall of the measuring box as the measuring chamber. The rotor can output 8 times the volume of the cavity per revolution. Therefore, the fluid flow rate is proportional to the speed of the spiral rotor, and the cumulative number of rotor revolutions is converted into the measurement of fluid flow rate (see figure).

2. Structure:
Dual rotor flowmeterIt mainly consists of a body, a pair of spiral rotors, a magnetic coupling, a reduction mechanism, an adjusting gear, a counter, and a signaling device. The number of revolutions of the spiral rotor is transmitted to the meter counter through a reduction mechanism composed of a magnetic coupling and a series of gears. Magnetic couplings are mainly composed of active magnetic steel and passive magnetic steel.