Drycure

The presence of water-containing voids in steam cured XLPE cables and the expansion of usage of polymeric insulations into high voltage applications has spurred the search for a viable source of vulcanizing energy alternative to the use of saturated steam. Several alternative methods of vulcanization and many types of insulations have been considered, but for power cables the industry has directed the highest level of attention to systems which permit use of conventional insulating materials (such as PE with peroxide catalysts) and allow cure to occur in a dry atmosphere that provides a source of heat other than steam.

Several years ago, Anaconda Wire and Cable Company developed a vulcanizing method which does not require steam and cures conventional insulating materials. In a joining of forces, Royle and Anaconda further improved and perfected the method, and this resulted in the introduction of the Royle Drycure system.

The Drycure system for new and retrofit CV lines can replace steam vulcanization of high and low voltage cables. The Drycure system utilizes as the source of energy pressurized and preheated nitrogen gas flowing through a heated pipe. Heat input to the cable insulation is derived both from the gas and the pipe surface. Cooling of the vulcanized cable is completed in pressurized water or in a high speed inert gas. The Drycure system can take the form of catenary or vertical tubes depending on the cable size to be produced. Most components in either type of line are identical to those which would be supplied for a conventional steam CV system. The only portions which differ are the tube and the gas supply.

Benefits:

• Productivity increased
• Quality improved
• Energy consumption decreased
• Space decreased
• Safety improved
• Earnings increased

To find out more about this system and receive full spec sheets please contact us.

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