Electrode seal for arc furnaces
US5406580A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 23, 1993 |
| Grant date | Apr 11, 1995 |
| Priority date | — |
| Expiry date | Dec 23, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B7/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrode seal for arc furnaces, particularly arc furnaces for steel making, has a first element in the form of a water cooled copper sleeve lining an aperture in the furnace roof for passage of an electrode, the sleeve having an upper surface engaged by a lower surface of a horizontally slidable seal ring formed by beryllium copper water cooled segments which abut end-to-end to form a close fitting collar around the electrode having an internal diameter the same as the external diameter of the electrode. The segments are spring loaded radially against each other and so as to center them over the aperture, so as to accommodate any minor oversize or irregularities of the electrode, as well as damping horizontal movement of the latter, and are also spring-urged downwardly against the sleeve. Water passages in the segments and in the sleeve are connected in series, and water piping and spring loading apparatus are arranged to leave part of the periphery of the seal free, allowing close grouping of electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.