Fluid coupling

A liquid coupling or hydraulic coupling is a hydrodynamic or ‘hydrokinetic’ device used to transmit rotating mechanical power. It has been used in automobile transmissions as an alternative to a mechanical clutch.

Fluid couplings are hydrodynamic devices that transmit rotation between shafts by acceleration and deceleration of hydraulic fluid. Shafts are used industrially to supply rotary movement to a wide spectrum of vehicles and equipment and shaft couplings are key to providing protected rigid, flexible or nonlinear connection between shafts, wheels and rotary equipment.

Fluid couplings fluid coupling consist of a housing containing an impeller on the input or traveling shaft and a runner in the result shaft. Both of these include a fluid which is generally oil that is put into the coupling through a filling plug on the housing. The impeller, which functions as a pump, and the runner, which acts as a turbine, are both bladed rotors. The components of fluid couplings are generally made out of metallic materials-aluminum, steel or stainless. Fluid couplings are found in the motor vehicle, railroad, aerospace, marine and mining sectors. They are found in the transmissions of automobiles instead of mechanical clutches. Forklifts, cranes, pumps of all kinds, mining machinery, diesel trains, aircrafts and rotationally-powered commercial machinery all use liquid coupling when a credit card applicatoin requires variable speed operation and a startup without shock loading the system. Manufacturers use these couplings for connecting rotary tools such as for example drive shafts, line shafts, generators, wheels, pumps and turbines in a number of automotive, coal and oil, aerospace, water and waste treatment and construction sectors.

In a fluid coupling, the impeller and rotor are both bowl-shaped and also have many radial vanes. They encounter each other but unlike equipment couplings haven’t any mechanical interconnection rather than touch. Fluid is directed by the pump into the impeller. The traveling turbine or pump is normally rotated by an internal combustion engine or electric motor imparting both linear and rotational motion to the liquid. The velocity and energy is normally transferred to the fluid when the impeller rotates. It is then converted into mechanical energy in the rotor. Every liquid coupling provides differing stall speeds, which is the highest velocity that the pump can change when the runner is usually locked and maximum input power is used. Slipping always occurs because the input and result angular velocities are identical, and therefore the coupling cannot reach full power efficiency-some of it will always be dropped in the liquid friction and turbulence. Versatile shaft couplings such as for example fluid couplings are essential because during procedure, some types of shafts tend to shift, causing misalignment. Flexible couplings provide efficient accommodation for moderate shaft misalignment that occurs when the shafts’ axes of rotation become skewed. Shaft movement is caused by bumps or vibration and it outcomes in parallel, angular or skewed shaft misalignment.
Quick release coupling (quick connect-disconnect coupling), is certainly a mechanical device,that provides a fast, practical way to repeatedly connect and disconnect any fluid line.