Apparatus for stabilization and deceleration of supersonic flow incorporating a diverging nozzle and perforated plate
US8176941B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2009 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Oct 12, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An apparatus is disclosed for reducing pressure and velocity of a particulate-laden, supersonic vent gas stream from a pressure vessel such as an autoclave. The apparatus includes a diverging duct in which the vent gas expands, and a perforated plate located inside the diverging duct. The perforated plate provides an area reduction that increases back pressure and forces an upstream normal shock in the diverging duct, thereby bringing about a desired reduction in pressure and velocity. The perforated plate is comprised of a material, such as a ceramic, that is resistant to erosion by the abrasive particulate entrained in the high velocity vent gas. The perforated plate has a central portion provided with holes and an imperforate peripheral portion which is resiliently received between connection flanges of the duct.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.