公开(公告)号：US20190178498A1

公开(公告)日：2019-06-13

申请号：US15838149

申请日：2017-12-11

Applicant: General Electric Company

Inventor： Matthew Bernard Wilson ,  James Harper ,  Yon Han Chong ,  Charlie Edmond Jones

IPC: F23R3/34 ,  F23R3/28

Abstract: A gas turbine combustor includes: a head end comprising a primary fuel nozzle; a liner defining a primary combustion zone proximate the head end and a downstream secondary combustion zone; a forward casing radially outward of and surrounding at least a portion of the liner; and an axial fuel staging system. The axial fuel staging system includes a plurality of fuel injection assemblies. Each fuel injection assembly includes a thimble assembly mounted to the liner, and an injector unit attached to the forward casing. A thimble of the thimble assembly extends through a thimble aperture in the liner. The injector unit extends through the forward casing, such that a portion of the injector unit is disposed within the thimble, and a fuel line fitting is disposed outward of the forward casing. The injector unit introduces fuel into air flowing through the thimble for injection into the secondary combustion zone.

公开(公告)号：US20190178497A1

公开(公告)日：2019-06-13

申请号：US15838172

申请日：2017-12-11

Applicant: General Electric Company

Inventor： Charlie Edmond Jones ,  James Harper ,  Matthew Bernard Wilson ,  Robert Wade Clifford ,  Yon Han Chong ,  Benjamin Robert Ryan ,  Gilbert Otto Kraemer

IPC: F23R3/28 ,  F23R3/00

Abstract: An injection assembly for a gas turbine combustor having a liner defining a combustion zone and a secondary combustion zone and a forward casing circumferentially surrounding at least a portion of the liner is provided. The injection assembly includes a thimble assembly and an injector unit. The thimble assembly, which is mounted to the liner, includes a thimble that extends through a thimble aperture in the liner. The injector unit, which is mounted to and extends through the forward casing, includes an injector blade that extends into the thimble. The injection assembly introduces a flow of fuel into a flow of air flowing through the thimble, such that fuel and air are injected into the secondary combustion zone in a direction transverse to a flow of combustion products from the primary combustion zone.