Патент USA US2411552код для вставки
Nov. 26, 1946. 2,411,552 w. R. NEW ‘ TURBINE APPARATUS ' Filed Jan. 20, 1943 li .I INVENTQR Wms'ro'r; R; Nzw. LIii BY mam“; ATTORNEY ' 2,411,552 Patented Nov. 26, 1946 r. umfreo sTAres v'rl-irrilv'r,"mirror: Winston R. New, Spring?eld, Pa., assignor to Westinghouse Electric Corporation, East Pitts burgh, Pa.,' a corporation of Pennsylvania Application January 20, 1943, Serial'No. 472,955. -‘ ‘ 2 Claims. (or. 60—49) ' ~> ‘ ‘ ' 2 1 , bricating voil pumps and ignition apparatus may This invention relates to power plants and par ticularly to a gas turbine power plant which may be supported, an axial flow compressor l5, com bustion apparatus generally indicated 16, a tur be used for effecting propulsion of aircraft. In order to propel aircraft at high speeds, it has been proposed to employ a power plant func tioning on the nonregenerative Joule cycle. Such bine l1 and a nozzle 18 de?ned by the casing l2 ' and a tailpiece I9 ‘mounted concentrically there in, effective to provide a propulsion jet. Air enters at the intake end H, ?ows through the compressor l5 where it is compressed, and into the combustion apparatus where it is heat ed. The heated compressed air on leaving the a power plant may include an air compressor, a combustion apparatus, and a gas turbine com pactly overall imum. within arranged in series to keep the weight, length and diameter of the unit at a min 10 combustion apparatus is directed by suitable These parts are mounted centrally guide vanes or nozzles 2| against the blades 22 and supported by an outer casing of carried by the turbine disc 123 and then dis streamline form which directs the flow of air charged through the propulsion nozzle l8. _ through the power plant. . n The combustion apparatus l6 may be of any The turbine is driven by the hot gases pro 15 suitable construction and is here shown as com vided by the compressor and combustion appa prising a plurality of ?ared tubes 24 arranged cir ratus and extracts atleast suf?cient power from cularly within the casing. These tubes may be these gases to drive the compressor. The re mainder of the available power may be utilized to propel the aircraft by ejecting the air rear wardly of the turbine. Since the power plant relies on the power sup "provided with openings (not shown) in the side . ‘walls thereof through which the compressed air 20 supplied by the compressor may enter and'mix with fuel oil or the like supplied to theburners. plied by the turbine to operate the air compressor and fuel pumps, the power plant is not self starting and some means must be provided for 25 Suitable ignition means (not shown) for igniting the fuel and air mixture, may be provided for each burner. ' The present invention is not limited to the details or arrangement of the structure thus far It is accordingly an object of the invention to described but is primarily concerned with means provide an improved starting arrangement for for starting the power plant. a power plant of the character mentioned. The rotor of the compressor l5 and the tur These and other objects are effected by the 30 bine disc 23 are mounted on a shaft 25 journaled invention as will be apparent from the following in suitable bearings, generally indicated 25, sup description and claims taken in connection with ported by the outer casing structure 12. the accompanying drawing, forming a part of The downstream face 21 of the turbine disc 23 this application, in which: is provided with a circular scrim of buckets 28 Fig. 1 is a side elevational view of a power 35 disposedadjacent the periphery thereof and into plant in which the present invention is incorpo which a high velocity gas is discharged for start rated, with a portion of the outer casing struc ing purposes. The buckets are formed in the rim ture broken away; portion of the disc and they are spaced circum Fig. 2 is an enlarged view of the exposed por ferentially to provide wall thickness between ad 40 jacent cavities or buckets adequate to withstand tion of Fig. 1; Fig. 3 is a sectional view taken substantially on initially rotating the turbo-compressor shaft. the line III-III of Fig. 2; and suddenly applied high temperatures. The buckets are preferably shaped as shown particularly in Figs. 2, 3, and 4, so that the hot rotor showing the starting turbine buckets gas is turned through an angle somewhat less 45 formed therein. than 180° and discharged rearwardly through the The power plant shown in Fig. l and generally nozzle is as indicated by the arrows in Fig. 2. indicated I0 is adapted to be mounted in or on To prevent the escape of starting gaseous prod the fuselage or wings of an airplane with the left ucts from fouling or otherwise deteriorating the or intake end I I, as viewed in this ‘figure, pointed vcontiguous structure, the corner of the tailpiece 50 in the direction of ?ight. may be cut back slightly, as indicated at 29. The plant comprises an outer shell or casing ‘It is proposed to employ a cartridge 3! prefer structure I! providing an air duct I3 extending ably containing powder which will burn progres fore and aft with respect to the aircraft. This sively without detonation, thereby generating casing has mounted therein, along its longitudi rather slowly a large volume of gas at a relative nal axis, a nose portion I4 in which fuel and lu Fig. 4 is a _face view of a portion of the turbine‘ * 3 7 2,411,552 1y high temperature and pressure. In the em bodiment of the invention illustrated, the car tridge is shown as mounted in the tailpiece IQ of the power plant, although it is to be understood blades of axial-?ow blading and the stator in cluding inner and outer structures providing an axial-?ow annular passage for gases exhausting from said blades, starting means for the plant comprising an annular row of lateral buckets lar location or orientation. As shown, the car formed in said disc at the exhaust side thereof tridge 3| is mounted in a suitable holder 32 built and directed so as to be effective, when supplied into the tailpiece l9 and it is held in place by with motive ?uid, to turn the rotor in the same means of a hinged cover 33 provided with a clamping plate 34, access to the cover for car 10 direction as it is turned by said blading, a nozzle for supplying motive ?uid to said buckets, a mo tridge replacement being had through covered tive ?uid generator for said nozzle including a hand holes 35 provided in the outer casing cartridge adapted to contain an explosive charge structure l2, and means for ?ring the charge, and a‘ holder The cartridge may be ?red in any desired man providing a pocket within the con?nes of said ner, as for example, by electrical means con structures for retaining a cartridge in position trolled by a switch 3 . ' for supplying motive ?uid to the buckets, said While a suitable nozzle may be provided in any holder including part or parts which are movable desired manner, it is preferred to employ a car to open the pocket to the exterior of said outer tridge comprising a strong jacket having a noz~ structure to provide for insertion and removal of zle 31 formed in one end thereof. ' 20 a cartridge and means accessible from the exte To start the power plant, the cartridge 3| ls rior of the outer structure for detachably con ?red and the gases which are generated there necting the part or parts to said structure or in are directed by the nozzle 31 into the buckets structures. 28 to rotate the turbine disc. The charge of the cartridge should be adequate to operate the tur 25 2. In combination with a gas turbine power plant comprising a stator and a rotor with the bine until the heated and compressed motive rotor including a disc carrying the last row of ?uid provided by apparatus driven thereby may blades of axial-?ow blading and the‘ stator in operate it. cluding inner and outer structures providing an While a single cartridge holder 32 has been shown, requiring the cartridge 3| to be replaced 30 axial-?ow annular passage for gases exhausting from said blades, said inner structure being ar each time the power plant is to be started, it is ranged in juxtaposed and radially overlapping to be understood that a plurality of holders may relation with respect to the disc at the exhaust be provided, if desired, permitting one or more that the invention is not limited to this particu side thereof so that the annular passage consti cartridges to be ?red simultaneously for starting. Further, by providing a plurality of cartridge 35 tutes a continuation of the blading ?ow passage, starting means for the plant comprising an an holders, the turbine may be started several times before replacing the cartridges. While the invention has been shown in but ' one form,'it will be obvious to those skilled in the nular row of lateral buckets formed in said disc at the exhaust side thereof and directed so as to be effective, when supplied with motive ?uid, to art that it is not so limited, but is susceptible of 40. turn the rotor in the same direction as it is turned by said blading, a nozzle carried by said various changes and modi?cations without de inner structure and disposed radially inward , parting from the spirit thereof. and it is desired, therefore, that only such limitations shall be - from the inner boundary surface of said annular passage for supplying motive ?uid at high veloc placed thereupon as are speci?cally set forth in ity to said buckets, a container for an explosive the appended claims. - . charge in‘ communication with the nozzle, and What ‘is claimed is: , , _ means for igniting the explosive charge in the 1. In combination with a gas turbine power container to provide motive ?uid for the buckets. plant comprising a stator and a rotor with the ro tor including a disc carrying the last row of WINSTON R. NEW.