WUHU WANYI INDUSTRY CO.,LTD
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I. Operation Principle
The YOT series variable speed fluid couplings are operating in the following principle: The rotating part consistsof two bladed wheels -a Pump Wheel and a Turbine Wheel, the space between them is partially flled with a workingfluid (#32 Turbine oil in general) . The pump Wheel is driven by motor, the rotating wheel brings the fluid into rotationand thus convert input mechanical energy into fluid energy, back to mechanical energy . The quantity of fluid in thevariable speed coupling can be varied during operation by means of a scoop tube and thus it is possible to adjust thepower output level to meet the requirement at any time, The speed of the driven machine can be infinitely varied. Asmall portion of power is lost during the transmission which could warm up the working fluid, a heat exchanger isequipped to cool down the fluid. The speed is controlled by an electric actuator which is connected with the signals ofload change. A tachometer can installed for speed measurement upon customer's request. Depending on the application,the control of scoop tube can be either manual or automatic control
II. Advantages:
(1)Good power saving at about 20-40% when used with fans, pumps etc.
(2)Allow the motor to start at virtually no load, and then accelerate the driven machine at its maximum torque.
(3)Synchronize multi-motor drive.
(4)Dampens shocks and vibrations, minimize excessive torque on motor and working machine.
(5)Allow remote control on speed of drive. Step less speed adjustment.
(6)Reduce noise, improve environment and prolong service life of machine.
(7)Low investment, high reliability.
(8)Simple design, no mechanical wear, reliable even under most adverse environment, litle maintenance.
III. Applications:
(1)Pumps:boiler feed pumps, circulation pumps, cooling and condensation pumps, crudeoil pumps, pipeline pumps,ash pumps, piston pumps.
(2)Fans:ventilation fans, induce draft fans, forced draft fans, blowers, compressors etc. Used in steel plants, powerplants and cement plants.
(3)Others:Centrifugal machines, mixers, belt conveyors, Cylindrical granulating machines, Blenders, Drying machines etc.