MagnaDrive couplings and Adjustable Speed Drives replace the physical connection between motor and load with a gap of air. This air gap eliminates harmful vibration, wear and tear, enhances energy efficiency, increases motor life and protects equipment from overload damage.
Some of the features and benefits of this technology include: MagnaDrive’s revolutionary disconnected torque-transfer technology reduces your total cost of ownership by lowering maintenance and operating costs, increasing process availability, and improving system reliability.
A Torque Limiting Magnetic Coupling is currently in service driving the No.2 Coke Cooler. The coupling upgrade project was initiated as a result of a failure event on the No.1 coke cooler on November 16, 2016. Installation and start-up went well and the coupling is performing as expected demonstrating significant benefits (vibration reduction) over the Voith hydraulic coupling it replaced.
Remaining questions on new coupling performance will require a full load shutdown restart (something we never purposely plan to do) and operating time. The coupling is an infinite life design with no wear out parts.
“Maintenance manager seeks out inventive solution to solve problem”
DeGroote investigated medium voltage soft starts, VFDs, fluid couplings, gear reducers, belt drives and changing from medium voltage to 480 volts. While any of these might work, none provided a good return on investment.
“I started looking at different variable couplings – some of Nikola Tesla’s work – and came across the idea to use magnets for coupling purposes. I contacted MagnaDrive Corporation and found a solution,” said DeGroote.
The couplings were installed during Riverdale’s annual outage. Immediate benefits included the reduced starting torque and energy savings.
Total Cost of Ownership
When compared to alternative drives or constant torque couplings MagnaDrive products offer:
- Increased process system reliability.
- Lower maintenance cost for motor, seals and bearings.
- Reduced operational downtime.
- Substantial energy savings.
- Extended life of critical productive assets.