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Gas turbine flowmeterIt has good medium adaptability and can directly measure the working condition volume flow of steam, air, gas, water, and liquids without temperature and pressure compensation. Equipped with temperature and pressure sensors, it can measure standard condition volume flow and mass flow, making it an ideal alternative to throttling flowmeters.

Applications of gas turbine flowmeters:

Power generation and cogeneration, heating industry; aviation, aerospace, shipbuilding, nuclear energy, and weapons industry; machinery, metallurgy, coal mining, and automobile manufacturing industry; petroleum and chemical industry; pharmaceutical, food, and tobacco manufacturing industry; forestry, agricultural reclamation, and light industry, etc.

Gas turbine flowmeterWorking principle

The gas turbine flowmeter uses a turbine for measurement. It first converts the flow rate into the rotational speed of the turbine, and then converts the rotational speed into an electrical signal proportional to the flow. Gas turbine flowmeter It is used to detect instantaneous flow and total accumulated flow, with an output signal in frequency, making it easy to digitize. The induction coil in the figure is fixed to the housing along with the magnet. When the ferromagnetic turbine blades pass by the magnet, the magnetic resistance of the magnetic circuit changes, generating an induced signal.

The signal is amplified and shaped by an amplifier, sent to a counter or frequency meter, displaying the total accumulated flow. At the same time, the pulse frequency is converted from frequency to voltage to indicate instantaneous flow.

The rotational speed of the impeller is proportional to the flow, and the number of revolutions of the impeller is proportional to the total amount that has passed. The output of the turbine flowmeter is a frequency-modulated signal, which not only improves the anti-interference ability of the detection circuit but also simplifies the flow detection system. The range ratio of gas turbine flowmeters can reach 10:1, with an accuracy within ±0.2%. The time constant of small and low-inertia turbine flowmeters can reach 0.01 seconds.

Gas turbine flowmeter Mainly used for measuring the flow of fluids such as air, nitrogen, oxygen, hydrogen, biogas, natural gas, and steam in industrial pipelines, it is almost unaffected by parameters such as fluid density, pressure, temperature, and viscosity when measuring working condition volume flow.