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What are the connection methods for plastic tube float flow meters?
Plastic pipe floating cover. This type of flowmeter generally has flange connection method; Threaded connection method; Card sleeve connection method is cautious. In some places where the requirements are not high, such as measuring the flow rate of clean water, and the flow rate is only used as a reference, simple hose connections will also be used.
2. Working principle of gas rotor flowmeter
The working principle of gas rotor flowmeter is that when gas flows through a vertical conical tube from bottom to top, it will push a freely suspended rotor (or float) inside the tube to rise.
. After reaching an equilibrium position, the rotor comes to a standstill, and the lift of the gas on the rotor is exactly equal to its gravity. By reading the corresponding position of the rotor on the scale of the conical tube, the instantaneous flow rate value of the gas can be directly obtained. 1. The core workflow is based on the principle of variable area measurement: - Gas enters from the bottom of the flowmeter, passes through the annular gap between the rotor and the inner wall of the conical tube, and flows out from the top. -When the gas flow rate increases, the lift generated by the gas on the rotor increases, which will cause the rotor to find a new equilibrium point in a wider conical tube area, that is, the rotor rises and the annular area increases, resulting in a larger angle. -When the rotor is stable, its gravity (minus gas buoyancy) reaches dynamic equilibrium with the pressure differential force (lift) generated by the gas on the vibration source rotor. -The suspension height of the rotor is approximately linearly related t
2. Key components • Cone tube: usually made of glass, metal, or plastic, with a scale on the inner wall, and the diameter gradually decreases from top to bottom. • Rotor (float): an induction element suspended in a conical tube, with various shapes such as spherical and inclined groove, and a material density greater than that of the measured gas. Sealing and connecting components: Ensure a sealed connection between the flowmeter and the pipeline system to prevent gas leakage. • Indicator/Sensor: For glass cone tubes, direct visual reading is required; For metal tubes, the rotor position signal is remotely transmitted through magnetic coupling and other methods. 3. Important characteristics and influencing factors - Rotary flow meters are usually calibrated with air (20 ° C, 101.325kPa) when they leave the factory. -If the actual measured density, temperature, pressure of the gas are different from the calibration conditions, the readings must be corrected and converted to obtain the true flow rate. -The instrument has a simple structure, low price, small pressure loss, and directly indicates flow without the need for external power supply. -Its accuracy is generally 1-2.5%, which is not suitable for measuring small flow rates or situations that require extremely high accuracy.
3. Installation and use method of plastic tube rotor flowmeter
The installation and use method of LZS series plastic tube rotor flowmeter is as follows:
1. Installation method of Kuankai Brother: Connect directly by inserting and bonding: Use ABS or PVC plastic tube, directly insert into the flow