Industrial electric heating furnaces – Glass furnace device – Joule effect heating
Patent
1991-01-07
1992-06-23
Reynolds, Bruce A.
Industrial electric heating furnaces
Glass furnace device
Joule effect heating
373 36, 373 38, 373 52, 373 54, 373 55, 373 94, 373 95, 373 96, C03B 5027
Patent
active
051250020
ABSTRACT:
A sealed connection for a sleeve and jacket for protecting a molybdenum electrode mounted through the wall of an electric glass furnace. Around the electrode in the wall is a stainless steel sleeve coated on the inside with a fused alumina and having an outwardly extending flange at its outer end which engages the outer wall or shoulder in the aperture in the wall through which the electrode extends. The flange has an axially outwardly extending rib of V-shaped radial cross-section which seats and centers in an annular V-shaped groove around the inner end of a water jacket that surrounds the electrode outside the furnace. Refractory sealing gaskets are placed between the flange and the wall of the furnace and in the cooperating grooves and ribs of the sleeve and water jacket. The sealed cylindrical annular space around the electrode between it and the sleeve and the jacket is filled with nitrogen to prevent oxidation of the molybdenum electrode. The water jacket and sleeve are urged together and against the outer wall of the furnace by an adjustable mounting. The electrode is separately and adjustably mounted so that as the electrode wears away inside the furnace, more of it can be easily fed into the furnace.
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Carle Richard C.
Steitz William R.
Hoang Tu
Kirk Hugh Adam
Reynolds Bruce A.
Toledo Engineering Co., Inc.
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