US868787A - Elastic-fluid turbine. - Google Patents

Description

No. 868,787. I PATBNTBD 00T. z2, 1907. @.JUNGGREN.

ELASTIC FLUIDv TURBINE.

APPLIoATIoN FILED MAR. 25, 1904.

4 SHEETS-SHEET 3.

Witnesses: Inventor:

A@Scardun grew, m' ha Pigs.

Witnesses:

APPLIOAVTION FILED IAR. 25. 1904.

' 4 SHEETS-SHEET 4.

se LO inventor: Oscar Junren,

flung.

PATENTBD OCT. 22, 1907.

3 0 indicating devices.

UNITED sTaTEs PATENT oE-EIGE.

COMPANY, A CORPORATION OF NEW YORK.

ELASTICI-FLUID TURBINE no. sears?.

Specification of Letters Patent.

Patented oet. 22, 1907.

Appnmanfnea nmhzalgoi. seminaristas.

To all whom it min/ concern:

Be it known that I, OSCAR JUNGGREN, a citizen of `tl1e United States, residing at Schenectady, in the county ol Schenectady and State of New York, have 5 invented certain new and useful improvements in Means for Adjusting the Relativo Positions of Buckets for Elastic-Fluid 'lurbines, of which the following is a specification.

The present invention has for its object to provide an improved and simple means for adjusting the positions of relative] y movable buckets, whereby the proper clearances may be maintained, and the relation of said parts ascertained.

The present invention is an improvement on the l5 construction shown, described and claimed in my application, Serial Number 154,886, tiled April 2E), 1908. In the accompanying drawings, which illustrate-one einbodimbnt of my invention, Figure l is a partial vertical section ol' a multi-stage vertical-shaft turbine of the jet type; Fig. 2 is an enlarged detail View of the step bearing and the worm wheel for adjusting it; Fig. 3 is a detail view of an indicating device above the platform to indicatetheextent ol movement of the shaft and bearing' blocks; Fig. 4 is a detail view of a double-acting ratchet for moving the bearing-adjust ing means; Fig. "3 a view showing the feeler or means Y for ascertaining the position `of the wheels of thedif- 'ferent stages; and Fig. 6 is a sectional view through the machine slimmingl the construction of the ieelers or l represents a concrete or other suitable foundation for supporting the sub-base 2. The sub-base isprovided with `an enlarged central opening to receive the lower end of the step bearing casing, and mounted on the upper surface thereof is a casing which supports the wheel casings and is connectedto a condenser or atmosphere as is desired. Situated above the coudenser casing or base is a wheel casing Al. The bucket wheels 5 are mounted on a vertical shalt Gthat is sup- 40 ported by the step bearing. Mounted on the periphery` ol' the wheely are rows of buckets 7 and between each two rows of buckets isa more orless completo row of intermediate buckets 8. Between the wheel and intermediate buckets is a small spare commonly spoken of as a clearance. This clearance, which changes due to unequal expansion of the` parts, and also to load variations, should be as small as possible in order to reduce Athe leakage. 1

The vertical shaft is supported by a step bearing 9 comprising upper and lower bearingblocks, the.A upper block being attached to the shaft while the lower block is mounted in a detachable head `l() `and isadjustable thereon. The upper bloclofrotates with. 'the shaft While the lower block `is preventedr from rotatingby the pins l1. The bearing as a whole ismounted in the casing l2, whichcasi'ng also carries 1aguide bearing. The casing is provided lwith a peripheral flange that is bolted to the under side of "the condenser casing. Situated directly underneath the lower block of the step is an adjusting screw 13 to which is keyed a worm 60 wheel 14. Extending through the screw isa passage for conveying lubricant under pressure to. maintain a Iilm between the blocks. The Wheel meshes with a. worm l5 that is attached to they horizontal shaft 16. The latter is provided with bearings that'are formed in 65 or attached to the cylindrical casing 17.. This casing is secured to the detachable head 10 by'bolts or other securing means. v i

In order to prevent longitudinatmovement of the worm-carrying shaft, thrust collars 18 are provided at 70 opposite ends of the worm.` `The shaft 16 passes through the concrete or other foundation and is surrounded by a tube 19 which is embedded in the concrete. `At the righ t-hand end the tube is provided witha head which unites with a similar head attached to the cylindrical casingl?. The left-hand end of the tube is attached to a projection 2O formed on the vertical tubular eolumn 21. The tubular column is situated at one side of the turbine casing and is providedwith a suitable enlargement that forms a base. Formed in the column at la point adjacent to the projection isan enlargement Y for receiving the bevel gears 22. One of the gears is mounted on the horizontal worm shaft 16 While the other is mounted on a vertical shalt 23 that vis guided by suitable bearings formed in the column, At the lower end the shaft is supported by a cone vbearing 24 also carried by the column. The portion of the co1- umn adjacent to the gearing is removable so that the condition of the gears may be observed. y"Attached to the `side of the condenser casing is an iron ,platform 25, that is supported by brackets 26, upon whichthe engineer stands while adjusting the position ofy the step bearing and wheel. The shaft` 23 extends above the platform and is provided with a cylindrical ACasing 27 above which is located ay ratchet wheel28 best shown 95 in Fig. fl. Mounted in the handlek 29 for engagement with the ratchet wheel is a double-actinglpawl 30that is held on either side ofla central position by a spring pressed plunger 3l. As the handle is moved in one direction or the other, the verticalA shaft 2,3 is rotated forward or backward which imparts a ,similari movement to the horizontal worin shaft `1.6. Asvthe wormris rotated in one direction or the other, the worm Wheel tui-ns the adjusting screw 13 :in a direction to raise or lower the step bearing, .which changes the clearance 1,05

-between therelatively movable vbuckets 7y and 8.

20 comprise' a roller 36 that is carried by an arm 37.

40 draw it in.

In order to determine the extent of relative move,- ment of the vertical shaft 23 and its associated parts, an indicating'device is provided, comprising a pointer 32 and dial 33, best shown in Fig. 3. The pointer is 5 driven through suitable worm gearing by a shaft 34, the

latter being mounted in bearings carried by the cylindrical casing 27. Connecting the vertical shait23 and the indicator shaft 34 is suitable gearing 35. As the shaft 23 is moved in one direction or another jfrom a central position the pointer 32' will be correspondingly The indications on.

`moved from its initial position.

the dial 33 are arbitrary but the divisionsfshould be suiiciently far apart to prevent confusion on the part of the operator. For this reason I` prefer to make the pointer 32 relatively long so that a small movement o the supporting and actuating spindle will give a large movement at the outer end.

` ln Fig. 5 is shown 'a ieeler or indicating device tor ascertaining the position of the wheel`5. These ieelers The arm is attached to a spindle 38 that extends through the turbine casing and is provided with a packing 39 to prevent the escape of fluid around thefspindle. The center of the spindle and the axis of the roller are eccentrically disposed. The spindle should belocated near that portion of the casing carrying the intermediates, measured in a vertical plane, since it acts as a datum point from which to determine the changes in position,

of the parts. The changes are due to several causes,

of which unequal expansion oi the casing and shaft in a given interval of time, and unequal expansion of the upper and lower sides of the wheel due to mean temperature differences are the principal.

The spindle 38` is grooved at 40 where it passes through `the packing, and by screwing on\the gland or out of engagement witha bucket cover or other moving part of the wheel. Attached to the spindle at a point between the handle and the packing is a long pointer 42 that is adapted to move back and forth.A

over a scale 43. This scale is laid off with arbitrary indications, but is preferably so related with respect to the scale 33 (Fig. 3) that one division corresponds to one division of the second-mentioned scale. By

reason of this construction/if the pointer 42, when theV roller engages the wheel, indicates a deflection from the normal or permissible range of, say, three degrees,

the engineer knows that the vertical shaft 23 should be moved until the pointer 32 has traveled ihrec degrees. Ii the deflection is at the right of the initial position, the shaft 23 should be rotated in one direction, and if at the lett it should be rotated in the opposite direction. By means of the feeler the engineer is enabled to determine accurately the position of the wheel and intermediate buckets with respect to cach other, and at the saine time to ascertain how much,

if any, the propel` relation has lbeen disturbed. And by means oi the pointer 32 he knows just how much the parts have been shifted. The lower wheel is provided with a similar feeler, but the pointer 42, instead of` extending downwardly, extends upwardly toward ther pointer for the first-stage wheel. In this manner the two scales are brought close together where they can be (observed at a glance. The scales are carried by apiece of angle iron 44 that extends between the ianges on the second-stage wheel casing. The wheel chambers are separated one from the other by a` diaphragm 45 to which is attached on the under sidea nozzle 46 for discharging motive fluid to the bucket wheel; the nozzle or nozzles for the first-stage Wheel, being farther around, do not show.

.From the foregoing it will be seen thatall parts of the turbine may vary somewhat with respect to each other, which enhances the diliculty of adjustment. With my improved construction however the parts can be unfailingly moved to their proper position.

I have shown a manually actuated device or motor tor adjusting the position of the shaft, but I may substitute therefor' an electric motor or other equivalent power device.4 y

In accordance with the provisions of the patent statutes, I have described the principle oi operation of my invention, together with the apparatus which I now believe to represent the best embodiment thereof; but I desire to have it understood that the apparatus shown is only illustrative, and that the 'nvr ution can be carried out by other means.

What I claim las new and desire to secure by Letters Patent of the United States, is:

l. A tui-bine comprising sets ol' relatively rotating buckets, a main shaft which cari-ics one set of buckets, a support for the shaft, a means for adjustingthe support, an indicating device for indicatingr the extent of movement of the support and one set of buckets, and a driving con necton separated from and driven by the said adjusting means for actuaiinf: the indicating device.

2. A turbine comprising sets oi relatively rotating buckets, a main shaft which carries one set oi' buckets, a slipport for the shaft, a means for adjusting' ihe support, and a feeler which is movable into or out of engagement with a wheel for ascertainingl the position of the wheel buckets.

3. A turbine comprising sets of relatively rotating buckA ets, a Inain shaft which carries one set of buckets, a support for the shaft, a screw for adjusting the support, a vertical column situated at one side of the turbine, a shaft thereingearing connecting the shaft. and the screw, an means for impartim,r movement to the shaft. f

4. 'A turbine comprising sets of relatively rotating buckA ets, a main shaft which carries one set of hu ckets, a support for the shaft, a screw for adjusting' the support, a vertical column situated at one side of the turbine, a shaft therein, gearing connecting the shaft and the screw, a means for imparting movement to the shaft, and an indicating device that is movedby the shaft for indicatlug the position of thie support.

' A turbine comprising sets of relatively rotating: huck' the support, comprising' u horizontal shaft, a vertical shaftV rearingbeiwcen the shul'ls, und a device for imparting movement to the Vvertical shait.

7. A turbine comprising sets of relatively movable ond indicating buckets, a main shaft support for the worm attached to the head, and a shaft for actuating the worm,

14. A turbine comprising sets of relatively moving buckets, a main shaft which carries one set of buckets,

which carries one set of buckets, an adjustable bearing for supporting the weight of the shaft, a device for raising and loweringl the bearing,` a column located at one side of the turbine, a shaft mounted therein, means for imparting motion from the shaft t0 the device, and a lever for moving the shaft.

S. A turbine comprising sets of aA means for adjusting the shaft longitudinally, an indicator for showing;l the position of one set of buckets, and a second indicator which is located adjacent tofhe first for showing the position of the second set ot' buckets.

t). A turbine comprising sets. of relatively movable 15. A multistage turbine comprising sets of relatively movable buckets, a main shaft which carries sets of buckets, means for adjusting the shaft longitudinally, an indicator moved by the means for showing thev extent of movement of the shaft and its buckets, and feelers for showing the position of the several wheels.

i6. A multistage turbine comprising wheel and intermediate buckets mountedv in `separate compartments, in combination with feelers for the separate wheels, and dials for the feelers, which are located in close proximity.

17. A multistage turbine .comprising wheel and intermediate buckets mounted in shaft, a means for raising the bearing, an indicator moved by said means for showing the positionof the bearing, and a secdevice for showing,v tbe relation between the relatively movable buckets.

10. A` turbine comprising sets of buckets, a main shaft which an indicator for showing the position of the bearing, comprising,y a pointer and dial with gearing between the means andthe pointer.

1l. A turbine comprising sets of relatively movable buckets, a main shaft which carries one set of buckets, an adjustable bearing for the shaft, connected shafts located at an angle to each other for raising and lowering the bearing', and a double-acting ratchet-for imparting movement to the shaft.

12. A turbine comprising sets of relatively movable buckets, a main shaft which carries one set of buckets, an adjustable bearing l'or the shaft, a horizontal shaft for raising and lowering the bearing, a vertical shaft connected to the horizontal shaft for moving it, a column which surrounds the vertical shaft, a ratchet for moving the vertical shaft, and a platform situated adjacent to the ratchet and column.

13. A turbine comprising sets of buckets, a main shaft which an adjustable bearing for the the bearing. a head for wheel on the screw,

and'dials or scales over which the pointers travel. 1S. A multi-stage turbine comprising Wheel and inter mediate buckets mounted in separate compartments, in combination with feelers for the separate Wheels, pointers attached to the feelers, which extend toward each other, dials or scales over which the pointers travel, and a support which is common to the dials or scales.

19. In a turbine comprising the shaft, that extends through the head,

a cylindrical support that is attached to the head, a Worm wheel attached to the screw, a worm meshing' with the Ywheel and carried by the cylindrical support, and a shaft for driving,Y the worm,

In ,Witness whereof I have hereunto set my hand this relatively. movable 24th day of March, 1004. carries one set of buckets, shaft, a screw for moving supporting the screw, a w0rII1- a worm meshing with the wheel,`a

OSCAR JUNGGREN. Witnesses EDWAnD WILLIAMS, fir., HELEN OnFonD.

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