Dec. 17, 1946. n G, B, WARREN 2,412,848 TURBINE-GENERATOR Filed Jan. 3. 1944 vu 頽V闥Ttor: A Glenn B. Warren. Patented Dec. 17, 1946 i v UNITED STATES PATENT GFFICE 2,412,848 TURBINE-GENERATOR Glenn B. Warren, Schenectady, N. Y., assigner Yto General Electric Company, ya corporation vof New York Application January 3, 1944, .,Serial'No. 516,874 6 Claims. , (Cl. 290-52) 1 2 ' The present invention relates to turbine-gen- tor l5 driven from the turbine and arranged in erators and like machine sets or aggregates havalignment therewith ?lengthwise of the railroad 'ing two casings connected together to support the car of vehicle i0. The generator �has a casing end of one casing on Ythe adjacent end of the �with 馻nges il' on each side rigidly secured other casing. Such support may e accomplished 5 >to a support on the frame l2 by means including by rigidly securing or hanging the adjacent casbolts lf3. The turbine has a casing l� with an in ing ends together. In certain instances, as where let chest ".?� adjacent the generator l5, The 駉w the casings are subject during operation to conof elastic huid from the Ichest to the turbine is siderable stresses or bending forces or misaligncontrolled by valve means 2l. The turbine has a ment, a rigid connection between them may be lo rotor 22 with a shaft 255 -and a bucket wheel or injurious to the safe operation of the machines. wheels 2t secured thereto and in the present in The object of my invention >is to provide an imstance integrally formed therewith. The shaft proved construction and arrangement for sup25 is rigidly secured to the generator shaft by porting the adjacent ends of two aligned machine means of a coupling 25. rI'he exhaust end of the casings on each other whereby the setting up of 15 turbine casing iii is connected to av condenser 2t lstresses dueto such connection or support is sub籭n alignment with the turbine by means of a sub� stantially avoided, stantially cylindrical exhaust conduit 2� flanged This is accomplished in accordance with'my invention by the provision of a ball and socket sup- at its right-?hand end to the exhaust end of the turbine casing iii and its left-hand end to a port between the casings, the socket being formed 'by an end portion of one casing and the ball by the adjacent end portion of the other casing. Such arrangement constitutes a firm support between the casings and at the same time permits limited angular movement between them. For a consideration of what I believe to lbe novel and my invention, attention is directed to the following description and the claims appended thereto in connection with the accompanying drawing. In the drawing Fig. 1 illustrates an arrangement embodying my invention, and Fig. 2 is an enlarged detail view of a part of Fig. l. The invention is of particular significance in connection 'with turbine-generators for ?mobile power plants supported on railroad cars or like vehicles. Such turbine-generators are of considerable length and arranged lengthwise of the sup porting truck. When moving through a curve 20 铎anged inlet of the condenser 26. The turbine-generator in the present example is a three~bearing set, that the rotors of the Vgenerator and turbine are supported by three bearings. A bearing 28 .is arranged to support zo the outer end of the generator rotor on the gen erator casing in conventional manner` An other bearing is arranged between the turbine and the generator to support the adjacent ends of the two rotors, and a third bearing 3i? located 30 inthe exhaust conduit supports the outer end of the turbine rotor on the conduit The bear ing 29 has an outer spherically-shaped surface 3i engaging a similarly shaped supporting ring 32 which in turn is supported by an annular bracket :4,5 secured to, the present instance integrally formed with, annular casing "ill which at its left-hand end has a flange 35 secured to a flange of the turbine casing i9 and circurnferentially positioned r tive to the latter by radial key or over a rough track and Aalso due to tempera- .m means . The casing Zit broadly lis an extension ture changes >the car and the turbine-generator ofthe turbine cas-ing la and the turbine shaft 23 casings thereon are subject to considerable bendis supported on the extension 3i by the bearing ing forces which would set up excessive stresses fifi, which latter through the rigid coupling 25 if the adjacent ends ofthe ca?sings of the turbine also acts `a support for the generator shaft. and the generator were rigidly secured together. 45 bearing at for supporting the shaft 23 near The provision of yieldable or loose supporting the exhaust end of the casing i9 is held on and means, Asuch yas a ball and socket connection beenclosed by an inner casing which in turn is tween Vthe turbine and generator casings, howenclosed by and supported on an outer casing 3Q ever, precludes the setting up of great .stresses in located within the exhaust conduit i2? and held the casings. More speci馽ally, the arrangement 5o and centered thereon by a plurality of circumfer as shown in the drawing comprises a railroad car entially spaced supports Both casings 3i? I0 having truck means l! and a frame l2 supare sealed to each other and to the turbine shaft stitutes ported ona afoundation railroad track or support I3. Thefor .frame a turbinel2 con- to ed permit to the the atmosphere annular space and also between to preclude te be sub� _generator comprising a turbine I4 and a `genera- stantial heat transfer from the elastic fluid in the 2,412,848 3 4 fluid to the turbine, means forming a ball and socket connection between the adjacent ends of the casings to support one casing on the other casing so as to permit limited angular displace ment between the casings without creating ex 42, thus forming a rigid support for the exhaust Ul cessive stresses therein, and a speed-governing end of the turbine casing I9. The inlet end of mechanism for controlling the valve means in the turbine casing according to my invention is cluding a speed governor driven from the exhaust yieldingly or loosely supported on the adjacent end of the turbine shaft, and means connecting end of the generator casing i6 by means of a ball the governor to the valve means. In the and socket connection between them. -2. In a mobile power plant, a car having a present example the extension Srl of the turbine frame of appreciable flexibility, and a turbine casing I9 has an annular spherically-shaped generator set arranged lengthwise on the frame portion 43 engaging and supported on a socket and including a generator having a iianged cas formed by a spherically-s?naped portion d4 of an ing of substantial axial length rigidly secured end shield 5,5 of the generator casing I6. Thus throughout its length to the frame and a turbine the end of the turbine casing is loosely support having a casing of substantial axial length with ed on the adjacent end of the generator casing by an inlet end adjacent the generator, means form a ball and socket connection formed between ing a two-point support for the exhaust end of them. This permits each casing to move angu the turbine on the frame, and means flexibly larly about the center of the ball and socket con supporting the inlet end of the turbine casing nection without thereby setting up stresses in the on the adjacent end of the generator casing so other casing. The feet @i on opposite sides of as to permit limited angular displacement be the exhaust conduit ?Z1 together with the socket tween the casings without creating excessive 44 near the inlet end of the _turbine casing broad ly constitute a three-point support for the tur stresses therein. 3. A turbine-generator designed and construct bine casing. ed to be mounted on a foundation having ap The ball and socket connection completely en preciable flexibility including a turbine having a closes the shaft 23. Therefore the speed-govern casing and a rotor with a shaft, a generator hav ing mechanism for controlling the valve means ing a casing and a rotor with a shaft aligned 2| is operated from the other end of the shaft with and rigidly connected to the turbine shaft, 23 enclosed within the exhaust conduit 2l. In a three-bearing support for the shafts including the present example a vertical duct 縤5 is formed separate bearings at the opposite ends of the between an opening of the exhaust casing 2l and shafts and a single bearing for` supporting ad an opening in the outer casing 39. A speed govjacent ends of the shafts, spherical self-aligning ernor d1 is accommodated in the ductd� and supporting means for supporting said single driven from the shaft 23 by a worm gear d8. The bearing on an end portion of one of the casings, governor is connected to the left-hand end of a said casing end portion having a spherically governor beam �which has an intermediate shaped portion, and a spherical support formed point held on a fulcrum 5t and a right-hand end connected to actuate a conventional hydraulic 40 on the other casing for supporting said portion. exhaust conduit 21 to the interior of the inner casing 38 and to the bearing 3Q. The exhaust conduit 2l has opposite fianges or feet el rigidly secured to the frame l2 by meansincluding bolts governing mechanism 5l .for positioning the valve e. A turbine generator designed and construct means 2l in response to speed changes of the turbine-generator. The duct 縤6 also serves to accommodate an oil pump driven from the worm gear 48 for supplying oil under pressure to the ed to be supported on a foundation of appreciable fiexibility comprising a turbine and a generator hydraulic governing mechanism 5i and to the bearings. Thus, with my invention I have accomplished an improved construction and arrangement of turbine-generators and like machine sets having aligned shafts securely fastened together and each having a casing of appreciable axial length, the inlet end of the turbine casing being located adjacent an end of the generator casing and forming a ball and socket connection therewith to support the end cf one casing on the end of the other casing so as to permit limited angular displacement between the casings without creat cated between the sets and held on one of the ing excessive stresses therein, a cylindrical ex haust conduit extending axially from the ex haust end of the turbine casing, the turbine hav casings, which latter together with a portion of ing a rotor with a shaft extending into the ex supported by three bearings of which one is lo haust conduit, bearing means disposed in the tion. With such arrangement misalignment of exhaust conduit for supporting the turbine shaft, a sealed housing supported within the exhaust the bearings and bending forces acting on the conduit and enclosing the bearing, a duct formed casings are taken care of by the flexible connec through and sealed to the conduit and the hous tion between the castings. Having described the method of operation of (il) ing, and accessory actuated means driven from the turbine shaft and at least partly disposed my invention, together with the apparatus which I now consider to represent the best embodiment in said duct. 5. A turbine-generator designed and construct thereof, I desire to have it understood that the ed to be mounted on a foundation having ap apparatus shown is only illustrative and that the preciable flexibility comprising a generator hav invention may be carried out by other means. ing a casing of substantial axial length arranged 'What I claim as new and desire to secure by to be rigidly secured to the foundation through Letters Patent of the United States, is: the other casing forms a ball and socket connec 1. A turbine-generator designed and construct ed to be supported on a foundation having ap preciable flexibility comprising a turbine and a generator having aligned casings with the inlet end of the turbine casing adjacent one end of the generator casing, the inlet end of the turbine casing having a valve chest with valve means in the chest for controlling the flow of elastic out its length, a multi-stage turbine with a cas ing of substantial axial length having a high pressure end of comparatively small diameter axially aligned with and closely arranged to one end of the generator casing and a comparatively large diameter low pressure end disposed remote ly from the generator casing, means constructed and arranged to provide a two-point support for 2,412,848 the turbine casing on the foundation at a loca tion remote from the generator, and means pro viding a third point of support for the high pres sure end of the turbine casing on the adjacent end of the generator easing, said last-named means including a ball and socket joint permitting lim ited angular displacement between the turbine and generator casings without creating excessive stresses therein. 6. A turbine~generator designed and construct� ed to be mounted on a foundation having ap preciable flexibility comprising a generator hav ing a casing of substantial axial length arranged to be rigidly secured to the foundation through out its length, a multi-stage turbine with a cas ing of substantial length having a high pressure end of comparatively small diameter axially aligned With and closely arranged to one end of the generator casing and a comparatively large diameter low pressure end disposed remotely from the generator casing and a cylindrical exhaust casing extending axially from the low pressure end of the casing, means constructed and ar ranged to provide a two-point support for the turbine casing on the foundation at a location remote from the generator, and means providing a third point of support for the high pressure end of the turbine casing on the adjacent end of the generator casing, said last-named means in cluding a ball and socket joint permitting limited angular displacement between the turbine and generator casings Without creating excessive stresses therein, the turbine having a rotor with a shaft supported in a 駌st bearing Within the ball and socket joint at the generator end and in a second bearing within the exhaust conduit at the low pressure end of the turbine, a sealed housing Within the exhaust conduit and enclos ing said second bearing, walls forming a duct through and sealed to the conduit and the hous ing, and turbine accessory actuating means driven from the turbine shaft and disposed in said duct. GLENN B. WARREN.