Summary

LWQ vortex turbine natural gas flowmeter (24V power supply, 4-20mA output) has absorbed the advanced technology of flow meters at home and abroad, and has developed a new generation of high-precision, high reliability gas precision measuring instrument, which has been developed by combining the theories of gas mechanics, fluid mechanics and electromagnetism. The low pressure and high pressure metering performance of color, various signal output methods and low sensitivity to fluid disturbance are widely applied to the measurement of natural gas, coal gas, liquefied petroleum gas, light hydrocarbon gas and other gases.

Working principle

The LWQ series turbine type natural gas flowmeter is a new generation of high precision, high reliability gas precision measuring instrument, which is developed by the advanced technology of flow meters at home and abroad, combined with the theory of gas mechanics, fluid mechanics and electromagnetism, and integrates the temperature, pressure, flow sensor and intelligent flow integrator. The low pressure and high pressure metering performance of color, various signal output methods and low sensitivity to fluid disturbance are widely applied to the measurement of non corrosive gases such as natural gas, coal gas, liquefied petroleum gas, light hydrocarbon gas, liquefied petroleum gas, argon, high pressure hydrogen and biogas.

The product is approved by the national explosion-proof product quality inspection department according to the GB3836.2000 "explosive gas environment electrical equipment 1 parts: General requirements", GB3836.2-2000 "explosive gas environment electrical equipment second parts: Flameproof" d "and GB3836.4-2000" explosive gas environment electrical equipment fourth parts: intrinsically safe ". The full type "I" standard is qualified. The explosion-proof sign is Exd II BT6 (flameproof) and Exia II CT6 (intrinsically safe). It is suitable for 0 (intrinsically safe) 1 and 2 dangerous areas containing explosive gas mixtures of type II A, II B and II C T1 ~ T6 temperature groups.

When the fluid flows into the flow timing, it is rectified and accelerated under the action of the integrated rectifier of the intake port. Because the turbine blade and the fluid flow at a certain angle, the turbine generates a rotational torque. After overcoming the friction torque and the fluid resistance moment, the turbine starts to rotate. Within a certain range of flow, the angular velocity of turbine rotation is directly proportional to the volume flow volume of the fluid. According to the principle of electromagnetic induction, a pulse signal which is directly proportional to the volume flow of the fluid is detected from the coaxial rotating signal wheel by using a magnetic sensor. After amplification, filtering and shaping, the signal enters the micro processing unit of the intelligent flow integrator with the temperature and pressure sensor signals, and the volume, flow and total volume of the gas are directly displayed on the LCD screen.

Product characteristics

1. Alloy turbine has higher stability and corrosion resistance.

2, special bearings, long service life;

3. The measuring room is isolated from the ventilating room to ensure the safety of the instrument.

4. It can detect the temperature, pressure and flow of the measured gas. It can automatically track and compensate the flow and display the volumetric cumulation of gas in standard condition (Pb=101.325KPa, Tb=293.15K).

5, wide flow range (Qmax/Qmin > 20:1), good repeatability, high accuracy (up to 1 level), small pressure loss, low initial flow rate, up to 0.6m3/h.

6. Intelligent meter coefficient is modified by multi point nonlinearity.

7. Built in pressure and temperature sensor, high safety, compact structure and beautiful appearance.

8, the instrument has explosion-proof and protective functions, explosion-proof signs are Exd II BT6, Exia II CT6, the protection level is IP65;

9, low power consumption of the system, a 3.2V10AH lithium battery can be used for more than 3 years.

10, meter coefficient and cumulative flow value are not lost for ten years.