Electrode seal assembly for metallurgical furnace

Details Electrode seal assembly for metallurgical furnace Electrode seal assembly for metallurgical furnace

1983-04-20

1984-06-26

Envall, Jr., Roy N.

Industrial electric heating furnaces

Arc furnace device

Electrode support

373 96, H05B 712

Patent

active

044570023

ABSTRACT:
A seal for use around a rod electrode passing along an axis through a hole in the wall of a furnace into the interior of the furnace has an annular and at least limitedly flexible seal ring fitted snugly around the electrode in the hole and a holder carrying the seal ring and sealingly engaged with the furnace wall. Thus gas flow through the wall at the hole past the seal ring is substantially blocked. The seal assembly has structure forming with the electrode and seal ring a substantially closed chamber surrounding the electrode axially inward into the furnace from the ring. This chamber is pressurized at superatmospheric pressure with an inert gas and the electrode is cooled inward of the furnace from the seal ring. The seal ring is compressed axially by a packing assembly so it is pressed radially against the electrode. The packing includes rigid split compression rings bearing axially on the seal ring.

REFERENCES:
patent: 2243096 (1941-05-01), Hardin
patent: 2979550 (1961-04-01), Sherman, Sr.
patent: 3709506 (1973-01-01), Beerman
patent: 4377289 (1983-03-01), Lefebvre

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