Electrode seal assembly

Details Electrode seal assembly Electrode seal assembly

H - Electricity

05

B

307/24

H05B 7/12 (2006.01)

Patent

CA 1316201

43-21(6869)A ELECTRODE SEAL ASSEMBLY Abstract of the Disclosure The invention is directed to a seal assembly for sealing an electrode movable vertically through an opening in the roof of an electrode furnace. The seal assembly comprises a lower assembly including an annu- lar base adapted for sealing engagement with the roof around the roof opening, an annular wall extending up from the base, and an annular scraper extending gener- ally radially inwardly relative to the wall and having an inner edge adapted for scraping material from the outer surface of the electrode as the electrode moves vertically. The seal assembly also includes an upper assembly comprising a pair of annular seals of refrac- tory material disposed in vertically spaced relation, each seal comprising a plurality of discrete arcuate seal segments, a mechanism for applying an inward radial pressure to each seal to hold it in sealing engagement with the electrode, and a mechanism for holding each seal against upward movement relative to the roof as the electrode moves up through the roof opening.

568455

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