Device for mounting and withdrawing a plasma torch relative to a

Details Device for mounting and withdrawing a plasma torch relative to a Device for mounting and withdrawing a plasma torch relative to a

1989-09-26

1990-11-20

Paschall, M. H.

Electric heating

Metal heating

By arc

21912151, 21912136, 21912137, 21912149, 373 18, 373 22, 373 24, B23K 900

Patent

active

049720635

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.

REFERENCES:
patent: 4466824 (1984-08-01), Gauvin et al.
patent: 4654504 (1987-03-01), Sullivan et al.
patent: 4659899 (1987-04-01), Welkie et al.
patent: 4761793 (1988-08-01), Digne et al.

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