Simplex airblade fuel injection method
US5115634A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 1990 |
| Grant date | May 26, 1992 |
| Priority date | — |
| Expiry date | Mar 13, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B7/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A simplex air blast fuel injection system and method for the atomization of fuel for ignition to drive a gas turbine includes a simplex nozzle which receives a fuel from a fuel pump powered by the turbine over a range of pressures between maximum and minimum pressures during the operation of the turbine, and also received fuel from the fuel pump at a substantially lower pressure than the minimum fuel pressure when the turbine is cranked during startup. The fuel is discharged from the nozzle orifice as a swirling stream of atomized fuel during turbine operation, and as a film which is insufficiently atomized to initiate ignition during the turbine startup. An air compressor is also powered by the turbine to supply air at a low pressure and high volume to the fuel issuing from the nozzle orifice during both turbine operation and startup. An air director shroud imparts a swirling motion to the low pressure, high volume air and directs the swirling air to adjacent the fuel film as it issues from the nozzle orifice during startup to produce a pressure differential between opposite sides of the film to explode and atomize the fuel film sufficiently to permit initiation of ignition during…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.