Patent ID: 9115898
Filing Date: 2015-08-25
Classification: F23R

Abstract:
1. A system for mounting a fuel injector to a gas turbine engine casing having an aperture formed therein, said system comprising: a fuel injector having an integral flange for mounting the fuel injector to the casing with the fuel injector extending through the aperture, the flange being configured to pass through the aperture, and an intermediate ring which mediates the mounting of the flange to the casing at the aperture, the intermediate ring being positioned inside the casing at the aperture and defining an opening from which an outer end of the fuel injector extends through the aperture while an inner end of the fuel injector extends into the engine with the flange positioned inward of the ring, the intermediate ring having within the casing an outer diameter greater than that of the aperture in the casing such that the intermediate ring cannot be removed from the engine through the aperture and such that the flange cannot pass through the opening in the intermediate ring; wherein to mount the fuel injector to the casing the flange is dismountably sealed to an inner surface of the intermediate ring with the fuel injector extending through the opening, and the intermediate ring is dismountably sealed to an inner surface of the casing adjacent the aperture, such that only the fuel injector and the intermediate ring together seal the aperture, and on dismounting the flange from the intermediate ring, the fuel injector can be displaced into the casing to allow the intermediate ring, when dismounted from the casing, to be moved away from the aperture, such that the fuel injector can be withdrawn from the casing through the aperture at which the intermediate ring and flange were sealed.