Method and arrangement for sealing off a separating gap, formed between a rotor and a stator, in a non-contacting manner
US6164655A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1998 |
| Grant date | Dec 26, 2000 |
| Priority date | — |
| Expiry date | Dec 17, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/447
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
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).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.