US920052A - Turbo-generator. - Google Patents

Description

B. H. HAMILTON & W. E. VER PLANGK.

TURBO-GENERATOR.

APPLICATION FILED APB.19, 1907.

Patented Apr. 27, 1909.

3 SHEET8SHBET 1.

Inventor-s, Brace H. Hamilton, \MlliamEVe PlancK,

y QQM-u i 0 1th. y.

B. H. HAMILTON & W. E. VEB. PLANOK. TURBO-GENERATOR.

APPLIOATION FILED APR.19,1907.

Patented Apr. 27, 1909.

3 SHEETS-SHEET 3.

Witnesses:

I InVen tor-s Brace H. Hamilkon,

ll Iiam Eygr zlanck,

UNQITED s'rarns PATENT OFFICE.

BRACE H. HAMILTON AND WILLIAM EVERETT VER PLANCK, LYNN, MASSACHUSETTS, 'ASSIGNORS TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW .YORK.

rmo-enmanig'ron.

Specification of Letters Patent.

. PatentedApriI-Q 'I 1900 A lication an April 19, 190i. seriaino. 369,104.

To all whom it may concern:

Be it known that we, BRAOE H. HAMIL- TON and WILLIAM E. VER PLANcK, citizens of. the United States, residing at Lynn, county of Essex, State of Massachusetts,

- have invented certain new and useful Im-' provements inTurb'o-Generators, of which the following is a specification.

Our invention has "reference to turbogenerators and more especially to those intended for out-of-door service but it is to be understood, however, that the invention is not limited to that class of service since it is capable of much wider application.

The object of the invention is the provision of an improved turbo-generator of simple structure and reliable and eflicient operation.

The improvements are directed more particularly to the construction and'arrange-' ment of the casing and to means for ventilatmg the generator and reducing the tem-' perature of the turbo-generator as a whole.

In the accompanying drawings illustrating one embodiment of our invention, Figure 1 is a partial vertical section of a turbo-generator; Fig. 2.is' an enlar ed view of the right end of the machine s own in Fig. 1 with parts broken away; Fig. 3 is a sectionon the ne 33, of Fig. 2; Fig. 4 is a perspective new of the inner wall of the head at one end locomotive boiler or on some other part} of the train where it is exposed to rain, sleet, snow, dirt, etc.

working arts of the generator in such a manner t at they are protected from the elements while at the same time they are properly ventilated and are readily accessible for inspection and repair.

The generating unit maybe regarded as comprising two sections, v1 z.: the turbine section A and the generator section B.

,55 Steam from the locomotive boiler or other Owing to the severe condi-- tion of service, it 1s necessary to mclose thesource drives the turbine which turnv actuates the generator. Current from the generator is supplied to the train-lighting or turbine and generator are combineditoform a compact machine whichis supported by feet 1 bolted to suitable supports on the locomotive or some other base.

of the Curtls single-stage type is shown, but the invention is not limite 3 of the turbine is secured to and drives a shaft 4.

supply of steam is controlled by asuitable speed-responsive device actuated directlyor indirectly by the shaft 4. The exhaust from the bucket wheel enters the chamber 5 andis led away to any desired point by theeiillaust pipe 6 which may extend longitudinally or transversely of the apparatus. as a whole is inclosed in a casing 7. The pore tion 8 of the casing which surrounds the govremovable by slidingit longitudinally on the guides 9 andis secured in working position by a catch or look 10. Packings' 1'1 prevent leakage from the casing-along the shaft.- The shaft 4 is supported by suitable bearings.

and generator and another'bearing' 13 in the head beyond the generator.

bearing. I r The generator illustrated is of the b polar direct current type. In Fig. -1, 14 indicates tor and 15 the field .or stationary portion. In. operation the field oles occupy a general relation of the poles with respect to the armature conductors, one of' the polesis shown in a vertical position 90 de rees '1slaced from its actual locationl he numtype as'desired. The armature bars'16 are connected to the commutator 17 or to col lector-rings 17''. 18 indicates the supportsomitted from Fig.1 to-simplify the drawing. The arrangement of the brushes 18 with re- For the urpose of illustration, a turbine- Steam or other elastic fluid'fi'om a suitable source is discharged againstthe buckets by nozzles or other devices; The" 'One. bearing 12 .is located between turbine thearmature or rotary portion of the generahorizontal position, but .to il ustrate more clearly the.

er of poles can be changedto satisfy the operating: requirements and the generator may be of the alternating or direct currentfor'thebrush' holders but the brushes are" other system by suitable conductors. The

t'o the' specific; construction illustrated. The bucket wheel The turbine ernor or speed responsive device is readily Oil-rings and reservoirs are. provided for lubricating each lation t o-their cooperating devices: :17 or 17- is illustrated in Figs. 8'and 9, thecommutator 17 for a direct current machine-being! shown in Fig. '8 and the collector rings 17"for i -A head '21 is secured to the right end of the casing l). .Within the head are the bearing 13 and its oil reservoir. A cover or baffie plate-22 bolted to the outer end of the head closes the reservoir and when removed gives access to the oiling devices and the bearing. .The'hollow member 23 which projects from' the reservoir-through the cover has openings forfilling and emptyin the reservoir. A similar opening is provi ed near: the middle.

of the cover. Screw plugs are used to close I theseopenings. Thebafileplate-22 has a curved edge 24 with an openin 25in its lower portion. The head ,2l--'also as a vertiof' Water whose weight balances-or slightly .cal "flange or baffle plate 26 witha curved edge 27. Concentric with this edge is a simi: lar semi-circular member 28 surrounding the upper half of the bearing.- The drain ipe 29 leads from the lower portion of the edge 27 toward the outside of the machine. To revent the suction on the interior of the cylinder 32 from -objectionably interfering with the drainage therefrom, a pocket 1s provided in the lower portion of the cylinder. The pipe 29 leads to this pocketand an opening 46 eads from the bottom of the pocket to the atmosphere. The depth of the ocket is sufiicient to enable it to hold 'a smal column 4&exce'e'ds the suction eflect.- The result is an intermittentflow from the pocket and the accumulation of an undesirable uantity of water the bottom of the cham er is prevented." J

Projectin from the lower portionof the inner wall 0% the head is a tapering discharge nozzle 'or directing member 30 which terminates in an'open ing 31 extending beneath the brushes 18" and commutator 17 orother' collecting devices, such'for exam le asthe collector rings "-17 and their'brus es. The cylindrical member. 32 is of substantially the same diameter as the. casing 19 and is attached ftoand forms a part of the head 21,

which inclos'esand supports the bearing structure The outer end of this cylin- (161' has a inclined wall orbaflie plate. 33 w th. a curved edge 34 surrounding an opening 135 m the center of'the plate.

This edge, as well asi-the edges of the plates 22 and 26, iscurved in a direction epposite to the flow" of air through the hea Between the generator and the bearing 12, the casin 19 is provided with an internal flange or wa 36-,having an ope ing 37 in its center. Mounted on the shaft 4 adjacent the opening 37 is a fan 38 which as it 'rotates draws air from the interior of the casing and discharges it over the bearing and the adjacent surface of the turbine casing, the air escaping from openings in the lower part ofthe casing 20. A screen 39 may artially surround the fan to, guard against t e entrance of dirt or other foreign. matter to the armature when the casing 201s removed at any time.

A bar or hanger 40 bolted to the turbine and generator casings and provided with an eye bolt 41 furnishes convenient means for lifting the apparatus and moving it about.

If m apparatus of the type described the parts were tightly inclosed, the temperature.

of the generator might at times rise to a point!) V v where it would cause injury to the insulation of the field and armature conductors andthus decrease the life of the machine. also obvious that the entrance of any substantial quantity of water or; dirtinto the generator would be accompanied by injurious results. The construction described secures the benefits of good ventilation at all times 95 and avoids the dangers incident to theadmission of foreign matter. of the turbo-generator, Fig. 1, is toward the front ofthe locomotive. When moving for- It is The right endward a suiiicient quantity of air will be forced into the annular opening 42 by the movementof the locomotlve and ass from othe opening 3l pver the current col ecting devices, through he other parts of the generator and on to the turbine. locomotive remain stationary for any lengthoftime and the turbo-generator continue runnin under normal load conditions, it is desirab e to provide means, such as thefan But should the 38, for causing a positive flow of air over the current 1 controlling devices and conductors and through the apparatus in general. Air is drawn by the fan from the distant end of the generator and discharged between the generator and.the turbine thus preventing heated air or steam due to leakage, passing from the turbine into the generator. Rain, snow, dirt, cinder-s, eta, enter with the air are arrested by the bafliing devices 22, 24,

26, 27, 2s, 33fand 34. Theflforeifirpartlcles 12 being heavier'are deflected from 0 tortuous path of the air :current, caught "by "the curved edges'of'flanges 24, 34, 27 and 28 and drained or directed downward to the outside of themachine by the inclined surface of the 2 baffle plate 33ai1d through the opening 25 and drain 29. Thecleanedair then passes from the interior of the cylinder32through the tapered nozzle and is discharged with m considerable velocity a well. directed .130.

of 'the'brushes and the commutator or collecting' rings be kept cool. This cooling is efi'ectedvery successfully by the nozzle which directs the aircurrent against them as described, the heat due to friction and resistance being communicated to the air and carried away by it. This result is secured without any interference with'the ventilationand cooling of the other parts 'of the generating apparatus.

The turbo-generator of Figs. 1 to {l is to be located parallel to the direction of motion of the train. Figs. 5, 6 and 7 show a modification adapted to be located transversely to the direction of train movement. The outer end of. the cylinder 221s closed and the air current enters an opening 43in the side of the cylinder toward the front of the train in? stead of in the end of the cylinder as inthe other figures. The baffling flange or edge is omitted from the cover 22 and the plane of the opening 44, corresponding to the opening 35, Figs. 1 and 2, is. inclined to the axis of the turbo-generator. In all other 'reother means.

spects the construction is the same as in the other form of machine above described. a

In accordance with the provisions of the patent statutes, We have described the principle of operation of our invention together with the apparatus which we now consider torepresent the best embodiment thereof;

alpparatus shown is only illustrative, and t at the invention can :be

What we claim as new and desire to secure b'yLetters Patent of the United States, is,-

1. In combmation, a dynamo electric i machine having poles, an armature and current collecting devices together with a cylindrical casing or frame inclosing the same, a

. cylindrical head for the casing including an air Inlet m its outer end, a nozzle pro'ecting from the inner wall of the head into t 'e casing which receives air from the interior of said head and has its discharge opening extending adjacent the armature and current collecting devices, and a baffling device intermedla-te'the air inlet and the nozzlefor preventing the entrance of foreign matter with the air to the interior of the machine comprising a cylindrical-plate centrally located adjacent the outer edge of the head, another centrall located plate substantially parallel to the st, and a plate rojecting inwardly from the outer edge'of t e peripheryof the head into the space between the parallel plates and having a central opening of less diameter than the outer diameter of said plates.

2. In combination, a motor, a generator collectin but we desire to have it understood that the carried out by.

driven thereby having an inclosing casing or ,for accumulating a column of liquid sufficient to overcome the suction effect of thefan.

3. In combination, a dynamo -electric machine having an armature and current devices, a cylindrical casing or frame w 'ch completely incloses the machine laterally, a transverse head at the armature end of the casing having. an-air outlet centrally located therein, and a cylindrical head for the collecting device end of the casing comprising an air inlet in its outer portion, an inner wall which separates the ead from the interior of the casing, a delivery nozzle carried by the wall which projects into the interior of the casing adjacent the collecting device, and a series of spaced plates intermediate the inlet and the nozzle with their edges curved in a direction ,oppositeto the flow of air through the apparatus,

said series comprising substantially parallel cylindrical plates centrally mounted in the head, and a plate projectinginwardly from the peri hery of the head into the space be tween the parallel plates and having a central opening of less diameter than that of the plates.

4. In combination, a dynamo electric machine having a shaft and an inclosing casing or frame, a cylindrical head at one end of the casing, a bearing for the shaft centrally located in the head, a circular plate on the end 'of the bearing, a second plate on the wall extehding between the earing and the periphery of the head, and an air delivering nozzle projectingfrom the wall into the interior of the casing.

5. In combination, a dynamo electric machine having current collecting devices, a casing for the machine having receivin and discharge openings to permit a circulation of air through the machine, a baflling means suitably located with res ect to the receiv ing opening to revent t e entrance of foreign matter, an a nozzle receiving air from said meansand dlschargm it over the current collecting devices to t e interior of the casin 6. In combination, a dynamo electric machine having an inclosing casing or frame, an air inlet, a bafliing device ad acent the inletfor preventing the entrance of foreign our hands this seventeenth day of April, matterpmeans for causing a circulation of 1907. air through the machine, and a drain for said BRAGE 1 HAMILTON.

. device having a pocket for circulating a col- WILLIAM EVERETT VER PLAN CK.-

Corrections in Letters Patent No. 920,052.

umn of liquid sufficient to overcome the Witnesses: suction effect of the air-circulating means. l JOHN A. MoMANUs, Jr., n witness whereof, we have hereunto set 'PHrLrP F. HARRINGTON.

It is hereby certified that in Letters Patent No. 920,052, granted'April 27, 1909, upon the application of Brface H. Hamilton and WilliamlEverett Ver Planck, of Lynn, Ma-ssa chusetts,-for an improvement in Turbo-Generators, errorsappear in the printed specification requiringcorrection, as follows: In line lllipge 2 the word controlling should read collecting; sa me page, line 123, the word of should read or, and page 4, line 4, the word circulating should read accumulcting; and that the said Letters Pzitent should be read with these corrections therein that the same may conform to the recordof the case in the Patent QfiEice. v v H 4 I Signed and sealed this 7th day of SeptQinberQA. DL, 1909 I [BEAL.] F. TENNANT,

Acting Commissioher of Pdtents.

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