Claims
- 1. A gas turbine combustor comprising:a pilot fuel nozzle adapted to form a flame portion in a central part of said gas turbine combustor; a plurality of main fuel nozzles arranged so as to surround said pilot fuel nozzle for forming a pre-mixed gas of fuel and air, each of said plurality of main fuel nozzles comprising a cylindrical outer casing and a plurality of nozzle holes bored in said main fuel nozzle along a circumferential direction of said main fuel nozzle; and a plurality of swirlers, each of said swirlers being arranged to surround one of said plurality of main fuel nozzles and to extend to a position of said cylindrical outer casing, respectively, each of said plurality of swirlers comprising a hub fitted around said main fuel nozzle, and a plurality of swirler vanes fixedly connected to said hub and extending radially outward from said hub, each of said plurality of swirler vanes being twisted from a hub side thereof to a tip side thereof, wherein each of said plurality of swirler vanes has a fitting angle at said tip side of 45 degrees relative to a center axis of said main fuel nozzle, and a fitting angle at said hub side of 25 degrees relative to the center axis of said main fuel nozzle, wherein said plurality of nozzle holes of each of said plurality of main fuel nozzles is downstream of said swirler.
Priority Claims (1)
Number |
Date |
Country |
Kind |
9-245477 |
Sep 1997 |
JP |
|
Parent Case Info
This is continuation-in-part (CIP) of Ser. No. 09/145,498, filed Sep. 2, 1998, now abandoned.
US Referenced Citations (14)
Foreign Referenced Citations (2)
Number |
Date |
Country |
0 397 046 |
Nov 1990 |
EP |
8906307 |
Jul 1989 |
WO |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09/145498 |
Sep 1998 |
US |
Child |
09/794134 |
|
US |