Electrode seal assembly for metallurgical furnace
US4457002A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1983 |
| Grant date | Jun 26, 1984 |
| Priority date | — |
| Expiry date | Apr 20, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B7/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.