US1355090A - Steam-turbine - Google Patents

Description

N. T. COLLINS.

STEAM TURBINE.

APPLICATION FILED SEPT. 16, 1919.

1,355,090, Patented 001;. 5,1920.

IN VEN'lOk 1V. 1 1i [i228 A? 6%1/1140/21/ UNITED TES;

BATENT OFFICE.

NATHANIEL T. COLLINS, OF SACRAMENTO, CALIFORNIA.

STEAM-TURBINE.

Application filed. September 16, 1919. Serial No. 324,188.

(til '20 7mm it may concern:

Be it known that I, NATHANIEL T. COL- L'Ins, a citizen of the United States, residat Sacramento, in the county of Sacramento and State of California, have inventwhich structure is decidedly simple in its.

construction and economical in performance; furthermore, being designed so that max1- mum power may be developed thereby, due to the fact that the rotor is being acted upon at all times and at no point in the cycle of its rotation uninfluenced by the motive force of the compressed fluid.

The present invention contemplates the use of an annular casing formed with a central cylindrical compartment, around the circumference of which a plurality of pockets are formed, said pockets cooperating with similar pockets upon a rotor housed within the case, the rotor being provided with means whereby a continuous inflow and outflow of fluid under compression may be maintained at all times.

The invention is illustrated byway of example in the accompanying drawing, in which Figure 1 is a view in central, vertical section through the turbine, showing the relative position of the rotor and the manner in which the circulation of fluid is maintained.

Fig. 2 is a view in vertical section through the turbine, as seen on the line 2-2 of Flg. 1, illustrating the details of construction of the rotor.

Referring more particularly to the drawings, indicates a shaft, upon which is keyed a reaction rotor comprising the two disks 11 and 12. One disk is formed with a radial passageway 13 leading from an 1ntake duct 14 which extends longitudinally through the main shaft 10 and is in communication with a source of fluid supply through the fixed cap 15 which is mounted over the end of the shaft.

The radial passageway 13 is also in communication with an annular passageway Specification of Letters Patent.

Patented Oct. 5, 1920 16 formed around the disk 11 for supply-- ing a plurality of short radialducts 17 which communicate with the periphery of the rotor. The outer ends of these ducts are covered by baffles 18 which act as a deflectlng plate to divert the fluid from its radial course of travel to one substantially tangential to the periphery of the rotor and along a nozzle opening 19. These openings are clearly shown in Fig. 2 as having inner wall faces 20 at right angles to the axis of the ducts 17 and having their outer portions opened to permit the fluid to flow into pockets 21 formed'around the inner face of a motor case 22. This case has an an nular body portion circumscribing both of the disks and is formed with opposite end walls 23 and 24k for completely sealing the rotors within thehousing thus formed.

The pockets 22 have end. faces 25 which are radial with the rotating axis of the turbine. These pockets are further formed with faces 26 which lie tangent to the inner circumference of the case and the outer circumference of the rotor, thus being parallel to the faces 20 of the rotor at certain points in their path of travel.

The pockets 21 extend, substantially the width of the housing 22 while the annular compartment within the housing for the reception of the rotors is divided by a central partition plate disk 27. By reference to Fig. 1 it will he noted that the disk 11 is not equal in width to the compartment formed within the engine case but occupies a portion of the case between the wall 27 and the end wall 23. The portion of the case between the wall 27 and the end wall is occupied by the disk 12. This disk has recessed portions 28 formed around itsperiphery and agreeing in location-and shape with the nozzle portions 19 of the disk. As the nozzle members 19 and the recessed portions 28 are in register they will be in communication when in re ister with the recesses 21 in the case. 6rdinarily they are separated by the partition disk 27 which rotates in unison with them and is disposed therebetween.

Radial slots 29 are formed in the disk 12 and will register with the pockets 21 at certain points in their travel so that the steam trapped within these pockets will be conveyed through an annular exhaust passageway 30 to an outlet passage 31 formed in the shaft and which passageway is in constant register with a circiunscribing exhaust chamber 32. The power developed by the movement of the rotor will be transmitted through the shaft 10 to any suitable gearing and may thereafter be utihzed as convenience dictates.

In operation of the present invention a fluid under pressure is delivered to the intake chamber 15 and thereafter passes along the duct'lito the radial passageway 13. It is then distributedto the various passageways 17 and emitted through the nozzle portions 19. The force of this fluid will act against the radial end walls 25: of the pockets 21 when the nozzles are in register therewith and wlllcause the rotor to move in the direction of 'arrowa, as indicated at."

Fig. 2. Attention is directed to the fact that there are five nozzles on the rotor. and

seven'pockets-formed in the case, thus in suring that the fiuid pressure is acting within certain of the pockets at all times to produce a continuous torque upon the main shaft 10. 7 When the nozzles 19 andthe pockets 21 7 permit the steam to escape to the exhaust compartment 32, it being preferable to posi tion one of the exhaust ducts 29 between each pair of pockets 28. V i

It will be observedthat the motor case is.

'mounted within bearings so that it may ro- This rotatioinhowever, 1s resisted by;

tate.

' the planetar gears interposed between the twosets of drivinggears. It will therefore be evident that thisgear set Wlll act to form a coupling between the forces of the rotor in one direction and the force of the motor case. in the opposite direction, thereby insuring that a maxlinum amount of power will be obtained from the turbine.

. Nhile I have shown the preferred form of my invention, various changes in the con- "struction and arrangement of the several pended claims. Having thus described my nvention, what I claim and desire to secure by Letters Patent is r V 1. A. turbine comprising a circular casing having a. plurality of spaced pockets formed on its inner circumference, a shaft by which the casing is rotatably supported and bearing supports for said shaft, a rotor rigidly mounted on said shaft and inclosed by said casing, said rotor having a plurality of pockets formed upon its periphery, and a pair of circular ducts formed in said rotor,

one-of said ducts communicating with each pocket of the rotor, and the other duct comrotor between each of the successive pockets of the rotor, and both of the circular ducts communicating with separate passages or. bores in the shaft and connections with the passages whereby the liquid under pressure may be delivered to one ofthe passages and" the returned liquid may be other passage. 7

2. A turbine comprising a circular casing having a plurality of spaced pockets-formed on its inner-circumference, a shaft by which the casing is rotatively supported and bearing supports for said shaft, a-rotor rigidly mounted on said shaft and inclosed by said casing, said rotor having a plurality of pockets formed upon it-s'periphery, and-a pair of circular-ducts formed in said rotor, one of said ducts communicating with each pocket of the rotor, and the other duct communicatingwith a plurality-of radial passages extending to the periphery of the rotor between each of the successive pockets of the rotor, and both of the circular ducts communicating with separate passages or bores in the shaft, a hollow bearing capon one end of the shaft with which the discharge passageor bore communicates, and said cap having a passageway leading therefrom, through which the discharge liquid may flow, and an annular hollow casing about the shaft? adapted to be in constant com-. munication with the inlet passageway of the shaftand the annular 'casin'g, also having drained from the an inlet passageway through which fluid under a pressure may be delivered.

In testimony whereof I have hereunto set 'my hand inthe presence of two subscribing witnesses. V v p v NATHANIEL'T. CQLLINS.

.Witnesses: V

C. H. COLLINS, 1 I I SrLvnY PEARLE FINsLnR.

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