Method and device for mounting and withdrawing a plasma torch relative to an apparatus operating under pressure and temperature conditions precluding a direct intervention
US4997475A · kind A · utility
2Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1989 |
| Grant date | Mar 5, 1991 |
| Priority date | — |
| Expiry date | Sep 26, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21B5/002
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method and device for forming a modifiable closed volume (16) by means of an extensible and retractable tubular element (16) fixed around the orifice of a sleeve (3) closed by a valve (5) on the upstream side of the valve, and detachably fixed around the nose (12) of the torch (4), and balancing the pressure in the volume (16) on the upstream side of the valve with the pressure prevailing on the downstream side of the valve by a device (20, S), opening the valve and reducing the volume (16) by advancing to the mounted position the nose (12) of the torch and locking the torch (4) on a sealing element (7) of the sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.