US1061858A - Reversible turbine. - Google Patents

Description

H. A. MQGULLOCH REVERSIBLE TURBINE.

APPLICATION FILED my 10. 1912.

1,061,858. Patented ma 13, 1913.

4 BKBETB-BEHBT 1.

H. A. MQGU'LLOEE- REVERSIBLE TURBINE.

APPLICATION Fl [LED MAY 10, 1912.

' Patented May 13,1913;

' 4 SHEETS-SHEET 2.

A. MQCULLOCH.

REVERSIBLE TURBINE.

A PLiOAI'I'JN TILED MAY 10, 1912.

Patented May 13, 1913.

4 SHEETS-SHEET 3.

H. A. REVERSIBLE TURMNL APPLICATION FILED MAY 10, 1912.

1,061,858. PatentedMay13,1913,

' 4 BHEBTFSHBET 4.

l accordance with my invention. Fig. 2 is a HENRY A. MOCULLOGH, 01 NEW YORK, N.

REVERSIBLE TURBINE.

Specification of Letters Patent. Application filed Hay 10, 1912. Serial No. 696,437.

Patented May 13,;913.

Toall whom it mag concern:

Be it known that I, HENRY A. MoCUL- LOCH, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented new and useful Improvements in Reversi-' ble Turbine-Engines, of which the following is a specification.

This invention relatesto certain new and useful improvements in reversible turbines; and has for its object to provide an engine v of the improved type whereby the motive fluid shall be economically utilized.

A further object of the invention is to provide a turbine in which the pockets of the rotor are so arranged around its pethrottle valve having a plurality of 'ent openings which may be automatically riphery' that they may receive the fullest impact and pressure of the motive fluid.

A still furtherobject of the inventionis to provide a turbine of this. type with a differoperatedfor regulating the speed of the turbin'e.

To these ends the invention consists in the novel details of construction and combination. of parts more fully hereinafter described and particularly pointed out in the claims.

Referring to the accompanying drawings forming a part of this specification in which like numerals designate like parts in all the views :-Figure 1 is a 'side elevational view of a reversible steam turbine constructed in transverse sectional view of the same. Fig. 3 is a cross sectional view taken on the line 33 of Fig. 2 and looking in the direction of the arrow. Fig.4 is a detail plan view of the throttle valve. Fig. 5 is a detail" plan view of the reversing valve. Fig. 6 is an en} larged detail cross sectional view of one of the bowl shaped pockets and Fig. 7 is a detail perspectlve view of the removable nozzle plate.

The frame of the turbine comprises the bed plate 1 which has. formed thereon the cylinder-casing 2 to the top of which is connected by the bolts 3, .the valve casing 4 which valve casing is provided in its upper portion with the usual steam inlet 4'. The cylinder heads 5 and 6, each of which are provided with the bearings 7 and 8 and exhaust outlets 9, and 10, are bolted-to the cylinder-casing 2 and are adapted to'support within the bearings 7 and 8 the main .rection of the travel the valve casing,

spring pressed shaft 11, which shaft has mounted thereon 1 the belt wheel 12 over which passes a belt vl3 to a governor pulley 14, the latter actuating an ordinary form of centrifugal governor 15 that controls, through the connecting rod 16 and arm, 17, the throttle or governor valve 18.- The throttle valve is held within the opening 19 in the upper portion of the valve casing 4 and is provided with a steam inlet 20, a central hollow portion 21 and a series of steam outlets 22, which outlets are gradually'increased in length, thepurpose of which will behereinafter described. A head 23 closesone end of the throttle valve and also retains it within the opening .19 as shown inFig. 3. y 1 i V Keyed to the main shaft 11 within the cylinder-casing 2 is the rotor 24 which consists of a hub, portion 25 and radial arms 26 to whichare held the cylinder 27 which cylinder is provided with a series of openings 28 into which are screwed the bowl shaped steam pockets .29. To prevent considerable wear as is usual inengines of this type, a small space is provided between the periphcry. of the rotor and the casing. A removable nozzle plate 30 is seated within the cut away portion 31 of the valve casingand comprises the sloping top walls 32 and circular bottom wall 33. This nozzle plate is of the width of with two series of nozzles 34 and 35 which nozzles are arranged approximately tangentially so that the steam shall strike the bowl shaped pockets of the rotor, as it rotates, practically at right power of the impact may bethus obtained. Located within the valve casing 4 are two series of approximately tangentially arranged steam passages 36'and 37 whichcommunicate with the nozzles 34 and'35 for delivering the steam thereto.

In order to govern the direction of the flow of the steam, and consequently the di-' of the rotor, a reversing valve 38 is placed'within the seat 39 of ernor valve 18 and nozzle-plate 30. The reversing valve 'is provided with a' series of slots'40 which communicate with the pas sages 36 or. 37' for directing the steam to either side of the nozzle plate. The valve is also provided with an operating lever 41 which may be held in any one of three positions, forward, stop or reverse by the at a point between the gov-' pawl 42 engaging the the rotor and is provided 7 angles, and the whole notched segment A series of steam passages 44 are located within the valve casing between the throttle valve 18 and reversing sages 44, slots 40 and passages 37 to the nozzles 35 which direct it against the bowl shaped pockets of the rotor, which, on account of lying approximately at right angles thereto receives the full impact of the steam and drives the rotor at a high rate of speed. The steam after having performed its work, passes into the interior of the rotor and on out through the exhaust ports located within each heads. Should the turbine reach an excessive speed, it will be automatically throttled bythe action of the centrifugal governor, which, through the connecting rod, 16

and arm 17 cause the throttle valve 18 to'beturned so that the shorter ports therein are successively brought from alinement with the communicating passages 44. This effects a gradual reduction of the supply of steam to the nozzles until such time as the speed of the turbine becomes normal, after which the'throttle valve will erated so that steam may'again be supplied uniformly to all of the nozzles.

It is obvious that those skilled in the art may vary the details of construction andarrangements of parts without departing from the spirit of my invention and therefore I do not wish to be limited to such features except as may be required by the claims. 7

What I claim as new is,

1. In a turbine, the combination with a casing provided with a plurality of steam passages, of a nozzle plate mounted within the casing, provided with steam outlets in drical rotor within the casing provided with a plurality of pockets passing through its wall, the interiorof the rotor forming an exhaust chamber. s,

2. In a turbine, the combination with a casing provided with a plurality of steam passages, of a nozzle plate mounted within the casing provided with steam outlets in alinement with the steam passages, of a cy-- lindrical rotor within the. casing provided with a plurality of pockets passing through its wall, the interior of the rotor forming an exhaust chamber, and a means for controlling the passage of steamto the pockets successively.

3. In a turbine, the combination with a casing provided with a plurality of longitudinally disposed steam passages, of a noz-' of the cylinder again be op-- ahnement with the passages and a cylinzle plate mounted within the casing provided with steam outlets in alinement with the steam passages, of a cylindrical rotor provided with a plurality of longitudinally disposed'pockets passing through its wall and a means mounted within the casing adapted to control the passage of steam to the pockets successively.

4. In a turbine, the combination with a cylinder provided with a plurality of longitudinally disposed steam passages, of a reversing valve provided with slots in aline- I ment with said steam passages, of heads provided with exhaust outlets mounted on said cylinder, and a cylindrical rotor provided with a plurality of pockets passing through its wall, the interior of the rotor forming an exhaust chamber.

'5. In a turbine, the combination with a cylinder rovided with a plurality of longitudinal y disposed steam passages, means arranged to control the passage of steam to the steam passages, of a reversing valve provided with steam passages, of heads provided with the exhaust outlets mounted on said cylinder and a cylindrical rotor provided with a plurality of pockets passing through its wall, the interior of the rotor forming an exhaust chamber.

6. In a turbine, the combination with a casing rovided with a cut-away portion and a p urality of angularly disposed steam passages, a nozzle plate mounted within the cut-away portion and provided with a plurality of angularly disposed outlets in ahnement with the steam passages, a cylindrical rotor within the caslng provided with a 'plurality'of pockets, and a means for controlling the passage of steam to the pockets successlvely.

7. In a turbine, the combination of a casing provided with a plurality of steam passages, a rotor provided with a plurality of openmgs passing through its wall and removable steam pockets mounted within the openings. 7

8;. In a turbine, the combination of a casing provided with a plurality of horizontally arrangedand angularly disposed steam passages, a. rotor provided with a. plurality of horizontally arranged openings assing through its wall, and removable owl-shaped steam pockets mounted within the o enings.

9. Ina tur ine, the combination of a casin provided-with a plurality of horizontal arranged and angularly disposed steam passages, a removable nozzle plate mounted within the casing provided with a plurality of horizontally arranged and angularly disposed steam outlets in alinement with the steam passtges, and a rotor provided with a plurality of bowl-shaped pockets and a means for controllin the 1o, In a turbine, the-' ombination of aces-f ing rovided with acut 'away portiongfa j ranged series'of imp havlng fluid admitt ng portways leading 'to the respective impact surfaces, and means ,for controlling the admission of a working v --fluid,. to the portways in successive'or col- :2 ranged in parallel series and-disposed par "portion. and provided oppositely disposed nozzles arranged aps j proximately tan w vided with'a no e plate mounted withinthe' cut-away with two series of entially and a rotor passing threu its well, saidv pockets ada'pted'to receive the impact of the steam when at right angles to'the nozzles. 11'. In a'turbine, a casin a rotor mounted in the casing and provide with parallel aract surfaces, the casing lective order. 12. In a turb 1 ne, a casing, a rotor'therein, said rotor having passageways therein arwith the aids of the series vo passages,

1'0- gxurality of steam poc ate.

1 the valve and or rotor, the casing having ,rtways leadin to the respective .a-va ve adjustabl supported ,by the casing and provld in difierent fluid a itting positions and means for eontrollin the valve to lu'ing the portways therein 1n successive registration with the ortways on one osi t1on of causing the co ect ve registration of the portways of the. valve w1th the said first portways on another position of the valve. Y

Gm; A. Bmn.

25 adapted 'tocontrol the admission offlui to the first (ggrtways and arranged

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