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The Working Principle Of Hydraulic Coupler
Apr 24, 2017

Liquid-Force Coupler is a non-rigid coupling with liquid as working medium. The pump wheels and turbines of the hydraulic coupler (see chart) comprise a sealed working cavity which can circulate the liquid, the pump wheel is mounted on the input shaft, and the turbine is mounted on the output shaft. The two rounds of the half ring along the radial line are arranged with many blades, they are coupled with each other, with each other, with a gap of 3mm to 4mm in the middle, and forming a circular shape working wheel. The drive wheel is called the pump wheel, the drive wheel is called the Turbo, the pump wheel and the turbine are called the work wheels. After the pump wheel and the turbine are fitted, the annular cavity is formed, which is filled with the working oil.

The pump wheels usually rotate under the internal combustion engine or the motor drive, the blade drives the oil liquid, the oil liquid is dumped to the blade edge of the pump wheel under centrifugal force, because the pump wheel is equal to the radius of the turbine, so when the rotational speed of the pump is greater than the turbine speed, the hydraulic pressure on the outer rim of the pump wheel blade is greater than the hydraulic pressure on the turbine blade due to the differential fluid impacting the turbine blade when it is sufficient to overcome the external resistance, so that the turbine begins to rotate, which is to transmit the kinetic energy to the turbine to rotate the turbine with the pump wheel. The oil kinetic energy drops from the blade edge of the turbine and flows back to the pump wheel, forming a circular loop, and its flowing route is like a leading ring helix. The hydraulic coupler relies on the interaction between the liquid and the pump wheel and the turbine blade to generate angular momentum to transmit torque. The output (turbine) torque equals the input (pump wheel) torque when ignoring the wind loss and other mechanical losses in the impeller rotation.