The measuring principle and structure of flow sensor of gas turbine flowmeter are obviously different from that of gas waist wheel flowmeter, and its measuring accuracy is affected by the friction resistance moment between impeller (waist wheel) and bearing, the flow resistance moment generated when gas passes through, and so on.
1, principle and structure of gas turbine flowmeter
Gas turbine flowmeter is a kind of velocity flowmeter, and it must have a long straight pipe section before and after installation and use. The measuring principle is to reflect the flow rate by measuring the rotating speed of the impeller by using the mathematical relationship that the rotating speed of the impeller in the fluid is proportional to the fluid speed. It is a mature high-precision measuring instrument in flowmeter at present. It mainly includes built-in rectifier, turbine blade, transmission mechanism, magnetic coupling transmission mechanism, counter and so on. Additional devices such as low frequency pulse, A 1S high frequency pulse generator and A 1R high frequency pulse generator can be selected according to actual needs.
Kornco KNKE turbine flowmeter
2. Principle and structure of gas waist wheel flowmeter
Gas waist wheel flowmeter is a kind of positive displacement flowmeter, which has the characteristics of high precision, wide range ratio and high reliability, and has low requirements for front and rear straight pipe sections during installation. The measuring principle is that a pair of ∞-shaped rotors, namely waist wheels, rotate synchronously to form a measuring chamber. The number of revolutions of the waist wheel is proportional to the volume of gas passing through the instrument, and the number of revolutions of the waist wheel reflects the total amount of gas passing through. Its structure mainly includes waist rotor, synchronous gear, permanent lubricated bearing, gear, magnetic coupling transmission mechanism, counter and other parts, and additional devices such as high-frequency pulse generator can be selected according to actual needs.
The above is Cohen KNKE's answer to this question. If you have the purchase demand of turbine flowmeter, please go to Konko KNKE in official website and the United States to buy it, or ask Konko KNKE's professional technicians to find the most suitable product for you.