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Turbine flow meter consists of a multi-blade rotor mounted with a pipe perpendicular to the fluid flow. When the liquid passes through the blades, the rotor will spin. The speed of the rotor is depended upon the flow rate, so it can be measured by using a photoelectric cell or gears. This flow meter would convert the mechanical action of the turbine as the fluid flow rate. This device would rotate according to the flow in which it is placed, the number of revolution is proportional to the flow.It is used in many industrial applications to measure the flow of liquid and gas.
The major part of this device is a multi-blade rotor and this rotor is mounted at an angle that the fluid flow can rotate the rotor. A ball bearing supports the rotor on a shaft which is retained in the flow meter housing by shaft support section. A magnetic pick up is mounted to the turbine wheel, and the sensor would record the voltage pulse that is created. Then the voltage information is then translated into actual flow meter reading.
The turbine is rotated by the flowing fluid, these rotating blades would create pulses that would be recorded and the flow rate is determined by this. The pulse rate is depended upon the flow rate. This device would convert the mechanical action of the rotating turbine in the liquid flow around an axis into a user-readable rate of flow. The blades on the rotor is placed in a way that, can transform the energy of the flow into rotational energy. The rotor shaft spins on the bearings when the fluid moves faster then the rotor would spin faster too. These turbine flowmeters are used to measure the velocity of fluids and gases in pipes. Shaft rotation is sensed mechanically or by the blade movements. The movement of the blade is also detected magnetically. More pulse would be generated when the fluid flows faster and this flow could be measured, the transmitter would process the pulse signal to determine the customized gas turbine flow meter rate. These meters can be used when accuracy, compact size, and fast response is required.
It is used in the blending system of the petroleum industry
Airborne applications for energy fuel and cryogenic flow measurement
Food and beverage
Oil and gas
Food beverage dispensing
Easy to install
Good temperature and pressure rating
Excellent repeatability and range
The construction materials would allow to use it with many process fluid
Simple and durable
It can be easily connected to the electronic readout device for flow control and computer interface
Limited use for slurry applications
Problems caused by non-lubricating fluids
Less accurate at low flow rates
It cannot be operated at high velocity
Sensitive to flow profile
Interchangeability from unit to unit is very poor
The bearing is depended on the cleanliness and lubricity of the process fluid
Wear and tear could happen to the turbine blades and it needs to be calibrated frequently
For certain liquid applications, there could be problems such as cavitation, specific gravity, and viscosity
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