Device for mounting and withdrawing a plasma torch relative to an apparatus operating under pressure and temperature precluding a direct intervention
US4972063A · kind A · utility
1Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1989 |
| Grant date | Nov 20, 1990 |
| Priority date | — |
| Expiry date | Sep 26, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21B5/002
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The device for mounting and withdrawing a plasma torch in an apparatus at high pressure and temperature comprises in combination: at least one circular sealing element (2) interposed between the inner surface of a sleeve (3) and a nose (12) of the torch (4) and surrounding the nose, devices (6, 13) for balancing the pressures on each side of a valve (5) within the sleeve, and devices (18,23) for cooling the sealing element. The devices for balancing the pressures on each side of the valve comprise a communication pipe (6) by-passing the valve (5) and a tap valve (13) inserted in the pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.