GB709452A - Improvements in or relating to liquid fuel combustion apparatus more particularly for gas turbine plant - Google Patents

Abstract

709,452. Generating combustion products under pressure. NAPIER & SON, Ltd., D. Oct. 15, 1952 [Oct. 16, 1951], No. 24160/51. Class 51 (1). [Also in Group XI] Liquid-fuel combustion apparatus particularly for a gas turbine plant comprises one or more fuel distributing members C, Fig. 1, for maintaining layers of liquid fuel on at least some of the surfaces of a series of annular, radially spaced, substantially coaxial bodies B, B1, and which are rotatable about an axis coincident with or adjacent and parallel to the axis of the bodies B, B1 and comprise a radially extending fuel passage leading to a number of radially spaced fuel delivery nozzles C2 or the equivalent for delivering fuel on to the said surfaces, and means such as an air compressor for producing a flow of combustion air over the bodies B, B1. In the apparatus illustrated in Fig. 1 two fuel distributing conduits C are carried by the rotary inner wall A1 of an annular combustion chamber A2 at a point to the right of a diaphragm D extending across the interior of the wall A1, along which fuel flows axially from a supply point to the right of the conduits C to be discharged by centrifugal action through the latter. The fuel thus receives heat from and cools the wall Al and any fuel vaporized within said wall may escape through apertures D1 in the diaphragm D and may be led into the combustion chamber A2 through further holes in the wall A1 upstream of the conduits C. Each of the latter 'is formed with discharge orifices C3 and tubular nozzles C2 having metering inlet orifices C4, Fig. 3, or with either orifices C3 or nozzles C2. The bodies B, B1 are of oval cross section and are formed as incomplete annuli to avoid distortion due to thermal expansion, being supported from the outer wall A of the combustion chamber by radial bars A4, the bodies B1 being disposed downstream of the bodies B and in the paths of the air stream passing between the latter. Alternatively each of the bodies B, B1 may be of streamline cross section or of V-section so as to provide a sharp upstream edge and a concave rear surface. According to the Provisional Specification the rotary fuel distributing member or members may pass through one or more circumferential slots in a stationary inner wall of an annular combustion chamber.