Water-operated turbo couplings
3rd Quarter 2012
Hydraulic systems & components
Voith Turbo’s water-operated turbo couplings comply with ISO 140001 environmental specifications to meet international demands for environmental protection and safety in mining and industrial operations.
“We are world leaders in hydrodynamic coupling technology and Voith water couplings present customers with all the advantages of oil filled couplings and more,” says Voith product manager – start-up components, Hans Voshol. “The ISO compliance, combined with some ingenious design features, gives substantially improved energy efficiency.”
The couplings can deliver higher output because the density of water is higher than that of other fluids. Because water’s specific heat capacity is double that of oil, water-operated couplings allow more stop starts and the lower slip reduces temperatures. An added benefit is that the stocking of oil is eliminated, which removes the risks associated with oil spills and using the incorrect grade.
Advantages unique to the hydrodynamic couplings include smooth acceleration of heavy masses; torque limitation during start-up; effective damping of shocks and vibrations; overload protection for motor and driven machines; load compensation for multi-motor drives; and relieved motor start and run-up.
Hydrodynamic couplings are used mainly in belt conveyors, armoured face conveyors (AFCs), fans, centrifuges, wood chippers and mills. “Water-operated couplings have been operating on underground AFC drives for many years,” comments Voshol. He says that one of South Africa’s leading coal mines has standardised on Voith hydrodynamic water couplings. “They can be retrofitted to any existing application or installation as sizes are the same as those of oil couplings. The numerous advantages offered by these couplings far outweigh initial purchase costs,” he concludes.
For more information contact Hans Voshol, Voith Turbo, +27 (0)11 418 4000, [email protected], www.voith.com
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