Method and arrangement for sealing off a separating gap, formed

Details Method and arrangement for sealing off a separating gap, formed Method and arrangement for sealing off a separating gap, formed

1998-12-17

2000-12-26

Knight, Anthony

Seal for a joint or juncture

Process of dynamic sealing

Close proximity seal

277412, 277418, F16J 15447

Patent

active

061646555

ABSTRACT:
The object of the invention is to provide an improved method for sealing off the separating gap, formed between a rotor and a stator, in a non-contacting manner, with which method the service life of the components involved can be increased. In addition, an arrangement for carrying out the method is to be shown. According to the invention, this is achieved in that the flow layers (35, 36), having different circumferential velocities, of the working fluid (18) are divided after the choking action into a first partial flow (35') having a high circumferential velocity and a second partial flow (36') having a low circumferential velocity, the first partial flow (35') is merely deflected, only the second partial flow (36') is swirled and is finally directed parallel to the deflected first partial flow (35') into the latter. To this end, the opposing surface (24) of the choke point (22) is designed as a flow divider for the working fluid (18). The vortex chamber (23) adjoins the flow divider (24) and is arranged further upstream than the feed duct (29) for the next sealing element (21).

REFERENCES:
patent: 1505647 (1924-08-01), Junggren
patent: 3572728 (1971-03-01), Smuland
patent: 3940153 (1976-02-01), Stocker
patent: 4335886 (1982-06-01), Frey et al.
patent: 4513975 (1985-04-01), Hauser et al.
patent: 5244216 (1993-09-01), Rhode
patent: 5639095 (1997-06-01), Rhode
"Beruhrungsfreie Dichtungen", Trutnovsky, et al., VDI-Verlag GmbH publication, 1981, pp. 244-245.

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