Hydraulic coupling classification model

 
    Fluid coupling finite rectangular and variable speed fluid coupling, there is oil and water media coupling medium, water transfer fluid coupling medium is oil medium power 1.15 times.
(fluid coupling)
    Fluid as the working medium to a non-rigid couplings, also known as hydraulic couplings.
    Hydraulic coupling of the pump wheel and turbine liquid can form a closed working chamber circulating pump wheel mounted on the input shaft, turbine mounted on the output shaft. Power machine (engine, electric motor, etc.) to drive the input shaft rotates, the liquid is thrown centrifugal pump wheel. This high-speed fluid into the turbine after the turbines rotate the energy obtained from the pump wheel to the output shaft. Finally liquid return pump wheel, forming a cycle of flow. By liquid fluid coupling with the pump wheel, turbine blades interaction of the change in angular momentum transfer torque. Its output torque equal to the input torque minus the friction torque, so that its output torque is less than the input torque constant. Fluid coupling between the input shaft and the output shaft by liquid contact, working member does not exist between the rigid connection.

Fluid Couplings

   Fluid coupling features are: to eliminate shock and vibration; output speed lower than the input speed, the speed difference between the two axes with the increase of the load; overload performance and good starting performance, the load is too large to enter when stalled still rotating shaft, without causing damage to the power machine; when the load decreases, the output shaft speed increases until close to the input shaft speed, the transmission torque to zero. Fluid coupling transmission efficiency is equal to the output shaft speed ratio of the input shaft speed. General hydraulic coupling normal operating conditions when the speed ratio above 0.95 can obtain higher efficiency. Hydraulic coupling due to the characteristics of the working chamber and the pump wheel, turbine shapes differ. It generally rely on natural body heat, does not require external cooling supply system. If the oil vent fluid coupling, coupling it in the disengaged state, can play the role of the clutch.
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