The composition of the pump wheel and the turbine for the coupling of the coupler

The pump wheel and turbine of the coupler accessories make up a closed working chamber that can make the liquid circulate. The pump wheel is mounted on the input shaft and the turbine is mounted on the output shaft. When the engine (internal combustion engine, motor and so on) drives the input shaft to rotate, the liquid is flung out by the centrifugal pump wheel.

When the high speed liquid enters the turbine, it drives the turbine to rotate, transferring the energy obtained from the pump wheel to the output shaft. Finally, the liquid returns to the pump wheel to form a cycle of flow. The torque is transmitted by the change of the moment of momentum by the interaction of the liquid, the pump wheel and the blade of the turbine. Its output torque is equal to the input torque and the friction torque, so its output torque is always less than the input torque.

The coupling is to transfer power by the working oil in the chamber between the pump wheel and the turbine. Therefore, in some harsh environment areas, the main use of oil should be mainly used.

We are now in the northern cold area of our country as an example, the hydraulic coupling in North China oil pumping machine or ski use tractor, mostly used in the open air, in -40 percent under harsh environment can still normal operation. L-TSA32 turbine oil cut-off ordinary only reached -7%, 6 -30 hydraulic transmission oil doubts percent, No. 8 hydraulic transmission oil pour point is -35 percent were unable to use in the alpine region. Only in the 0/SYRH2042-2001 standard 8D hydraulic transmission oil pour point up to -50 percent, can be used outdoors in the cold area.