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The hydraulic coupling is a combination of centrifugal pumps and turbines.

It is mainly composed of input shaft, output shaft, pump wheel, turbine, shell, auxiliary cavity and safety protection device.

The input shaft end is connected with the power machine, and the other end is connected with the pump wheel;

One end of the output shaft is connected to the turbine and the other end is connected to the working machine.

The pump wheel and the turbine are symmetrical arranged to form the working chamber, the pump wheel and the turbine have a certain number of blades, and the shell and the pump wheel are fixed to form a sealed cavity.

The working chamber is filled with working fluid to transfer power.

Safety protection devices such as fusible plug and explosive plug configured by the coupler can ensure that the coupler does not have accidents when overloaded.

When the engine, through the input shaft drive coupling pump rotates, working liquid filling work in coupling cavity by centrifugal force and the work of the dual role of wheel blade from the radius of the smaller pump inlet is accelerated pressurized into the radius of the larger pump wheel exports.

At the same time, the dynamic moment of the liquid is increased, that is, the mechanical energy input by the pump wheel can be converted into liquid kinetic energy.

When a liquid kinetic energy of the work by the pump export rushed to the other side of the turbine wheel, the fluid flow and impact turbine blades turns and pump wheels of the same direction, namely liquid kinetic energy into mechanical energy, drive a turbine rotating machine work and drive the work.

The working fluid that releases the liquid kinetic energy flows to the turbine exit and enters the pump inlet again, starting the next cycle.

In this way, working liquid in the pump wheel and turbine cycle continuously, spiral circulation exercise between the input shaft and output shaft in the absence of any mechanical connection, only by liquid kinetic energy is flexible to connect together.