High Efficiency Magnetic Coupling

One of the biggest obstacles in magnetic coupling technology

The High Efficiency Magnetic Coupling overcomes one of the biggest obstacles in magnetic coupling technology – eddy current generation.

Eddy current losses are generated in the containment shell by the rotating magnetic field of the inner and outer magnet rotors. These eddy currents create additional heat in the magnetic coupling as well consuming extra power.

Nova Magnetics Burgmann has developed and patented a special magnetic coupling which eliminates up to 99% of the eddy current losses compared to conventional magnetic couplings. This unique technology uses a special laminated containment shell and innovative magnet configurations to nearly eliminate eddy currents, resulting in minimal heat generation and power consumption.

By drastically reducing heat generation and power consumption, the High Efficiency magnetic coupling system results in improved equipment performance and reduced operating costs, as well as extending the application range of magnetic coupling technology to higher pressures, speeds, and torque ranges.

 
 
 
Operating Limits
Design Temparatures
Samarium Cobalt -125 to +250°C [-195 to +480°F]
Neodymium Iron Boron -125 to +150°C [-195 to +300°F]

Maximum Allowable Working Pressure
  Vacuum to 660 psi @ 480 °F [45 bar @ 250 °C]
  Pressure ratings to 15,000 psi [1000 bar] available on request

Design Torque and Eddy Losses
There are two standard sizes - 16 Pole and 22 Pole. Within each size there are varying numbers of magnet rings.

Design Features

Low Heat Generation

Patented laminated containment shell and magnet configuration result in lower heat generation. This results in less heat input into the pumped fluid.

Low Power Consumption

The low eddy current generation results in substantial reductions in annual operating costs compared with conventional solid stainless steel and Hastelloy® cans.

Smaller Motor Sizes

Capital costs savings are realized since there is no need to oversize the electric motor to compensate for large eddy current losses.

High-Pressure Operation

Standard pressure rating of 500 or 660 psi (35 or 45 bar); Custom designs up to 15,000 psi (1,000 bar)

Zero Leakage

Eliminates mechanical seals, support systems, and injection of barrier fluid into product.

Integral Bearing

Optional product lubricated hydrodynamic bearing available in silicon carbide or carbon graphite.

Chemically resistant materials of construction

Accepted materials such as 316SS are used in construction of the containment shell. Chemically inert Gore-tex® gaskets are used between the laminated rings. The magnets are protected from process fluid by a welded Hastelloy C-276 shell.

Inquiry
Send your inquiry to Burgmann
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