Sealing assembly
US4219201A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 24, 1978 |
| Grant date | Aug 26, 1980 |
| Priority date | — |
| Expiry date | May 24, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/004
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An assembly for sealing an interface between a high pressure steam chest or chamber and a casing, wherein high pressure steam flows from the steam chest into the interior of the casing. The assembly comprises a sealing element extending through the interface for preventing direct contact between the high pressure steam and the interface, and joined to the steam chest so that a steam tight joint is developed therebetween. The assembly further comprises an auxiliary chamber defined by the steam chest, the casing, and the sealing element in communication with the interface between the steam chest and the casing; a first passageway having one end in communication with the interior of the casing and a second end in communication with the auxiliary chamber, for passing steam from the interior of the casing to the auxiliary chamber; and means for developing a pressure differential across the first passageway so that the steam pressure at the second end of the passageway is less than the steam pressure at the first end of the passageway. A low pressure region is provided having a steam pressure lower than the steam pressure in the steam chest; and a second passageway is provided, having on…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.