US1063692A - Elastic-fluid turbine. - Google Patents

Description

Ti AL Witnesses:

Patentd June 3, 1913;

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' Hismtorny? 0, JUNGGREN. ELASTIC FLUID TURBINE.

APPLICATION FILED JAN. 27, 1912.

' 1,063,692. Patented June 3,1913.

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Witnesses: inventor:

7 I Oscardung TGn, f% @M O. JUNGGREN. ELASTIC FLUID TURBINE.

APPLIOATION FILED JAN. 27, 1912.

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Patented June 3, 1913.

- OSCAR 'J'UNGGREN, OF SCHENECTADY, NEW YORK, ASSIGNOR TO GENERAL ELECTRIC fo-till whohm'tmag concern.

can be removed ing oneo'f the embod partial-axial {in which a section of I, UNITED STATES COMPANY, A CORPORATION OF NEW 'YQRK.

'ELAsTIoJ- LUIFTIIRBINE.

Specification oi'iletters "we.

Be itknown that .I, ()SGAR JUNGGRENJ a citizen of the. United States, residing at "Schenectady, county of Schenectady, State of New York, have invented certain 'new and useful Improvements in iElastic-Fluid iFurbines, of-which the following is a speciffication. I y

This invention 'relates to mu'lt-i-stage ela-'s-' rtic fluid turbines and the object of t-he invention is the provision of a turbine of im-- proved constructionhaving-a casing divided 'into segments withthe diaphragms', nozzles and intermediate buket's so supported from the casing that one or more-0f the segments and the wheel buckets, in.- termediates and nozzles fully exposed for inspection and repair without, dismantling the-apparatusas awho'le;

In the accompanying drawings illustratiments of my invention," Figure 1 is-an axial half section of a portion of a turbine; Fig. 2 is a transverse section on the line 2+2. of Fig. 1; and Fig. 3 isa the casing and its at 1 tached nozzles and intermediate buckets can be removed to inspect buckets, 'nozzles, ete.

Steam orothe'r motive fluid isfsupplied to the nozzles 4 of the initial stage of the tur-. bine 'by passages -5 "leading from a'steam The quantity of steam so supplied is usually controlled by some well known form of governing mechanism: The nozzles 4 discharge steam at relatively high velocity against the first rowof buckets 6 on the wheel '7.- Intermediate buckets 8 are arranged between the two rows'oi wheel buckets. :fllhe number of. rowsof and repair the wheel buckets can, however. be varied from "the" number illustrated. A'fterleaving the wheel, the steam enters the nozzles-9 which; discharge it against the buckets of the seeg ond wheel 10. It then flows in a similar manner through the succeeding stages of "the turbine to the exhaust 11. The first stage is separated *fromthe second stage by a diaphragm IQ-which is supported on a shoulder '13 formed on a. ring l' i'which rofrom "the easing 15. *Biaphragms 16, 17, 18 and 19 separate the other stages, the number of stages varying in =ac-- cordance with the different operatingx'con-t.

section illustrating the manner I of the wheel, buckets The Wheels :7, I10, 20, 21,22 and 23 of the .differentr'stages are mounted on a shaft 2 which ean ihave :its axis disposed horizon- :tall-y'or' vertically. For convenience, the turbine =will'be'described as having its shaft vertical. by, the inner edges'of the diaphragms-and serve .to .prevent leakage from one stage to another, I

, The outer'edges of thetliaphragms 16 and 117 are iplOVldBd with grooves 26 and 27 avhieh receive tongues or rings 28, 29, proljecting inwardly from an annular supporting member 30 that rests on ;a shoulder 31 on the casing lfi and ha-s the upper and lower portions of its periphery fitted to. the The member 30;

casing at '31 and 32. p which is'U-shnped' 1n cross-section,- is held in place-on the casing by the'bolts33. The

casing is'made in two or more segments and secured together at 5the oints by-the bolts PATENT OFFICE.

1 -Patented'June 3, 1913.

Suitable packingsp25 are carried The casing of the tnrbineshown in-the drawings, "by way of illustration, has four segments and the supporting member 30 is divided intothe same numberof partsvwith its joint-s registering with 'those ofthe' oasing. At the top and bottom of said member'are inwardly --eltten ding at'nnu'lar projections or rings'35 that carry'the tongues 28,

"29 that support ithe diaphragms. The number of 9the rings or projections 35-01111 -be more or Jess than the number shown if desired- The amp faees 'made :in segments, each segment comprising mozzles '36 are carried by the of gthe-projections 35 and are -a group of nozzle passages and the number at; nozzle segments being usually greater th'aifithe :number of segmentsof the casing 15 and'thesupportmg-member 30 with said -e'egments so arranged that some of the joints between them register with the joints of the *snpp'orting'memher and the casing so that melt segment of the casing and its attached parts ean be removed as a unit. The outer j side at .the'nozzles is provided with flanges 37 "that enter grooves in the member '30 and the inner side 'with'fianges 38 that .are

bolted to the projections 35. Passages39 *formed in said projections lead the steam from the preceding stage to the noz'zles. Thenumber ofthese passages and the are ithem increases-from t covered of snpplied admission towa1:d;

the exhaust end of the turbine, although in several of the "later stages they may extend over substantially the whole circle. larly, the intermediate buckets 40 bolted ,to the middle portion of the supporting members extend around the full circle of said I member in the later stages while in the earlier stages the are covered by them is smaller. The intermediate buckets 8, 40, 41 and-42 are bolted toshoulders formed on the casing. q V.

A segmental supporting member 43 similar to the member'30 is mounted in the lower part of the casing and supports the. dia{ phragms 18 and 19 together with the nozzles 44 and 44 and .the intermediate buckets 45. The casing is fastened to the base of the turbine by the bolts 46 and the cover or head 47 is attached to the top ofthe casing by the bolts 48. A sheet-metal lagging '49 is fastened to the upper and lower flanges desired by taking out the bolts which secure the chest to the head 47. One or more casing segments can be .removed at the same. time so long as a suiiicient number is left in position to support the diaphragms and the head.' From said figure, it is apparent that the buckets and nozzles are fully exposed and made readily accessible for, in-

' spection, changes and repairs. If it is only desired to examine or replace the Wheel buckets, one segment of the casing will be removed and the .wheels turned to bring all the buckets successively into the opening.

, If the intermediate buckets and nozzles are with massive parts and results in a savin to be looked after, then one or two segments of the casing can be removed and replaced after inspection before taking out others so that the diaphragms and the head will .always be properly supported. Thus the turbine can be readily inspected and repaired without dismantling the wheels, shaft and the generator that is usually carried by the 'upper end of the shaft. This facility of inspection and repair is a great advantage particularly in the case of large machines (T of time with improved service.

In accordance with the provisions of the patent statutes, I have described the principle of operation of my invention, together with the apparatus which I now consider to represent the .best embodiment thereof;

but I desire to have it understood that the apparatus shown is only illustrative, and that the invention-can be carried out by other means.

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

1. In a turbine, the combination of wheels having buckets on their peripheries, diaphragms arranged between the wheels, the diameter of the-diaphragms being less than the diameter of the adjacent bucket bases,

a casing, within which. the wheels and diaphragms are located, said casing being divided into segmentsand having an inwardly extending shoulder, an inner cylindricalsupporting member that rests on said shoulder and in turn engages the periphery of the diaphragms and supports them, and intermediate buckets coiiperating with a wh- -i that are carried by said member.

2. In a turbine, the combination of bucket whcels,'a diaphragm arranged between adjacent wheels. a. casing within which the wheels and diaphragm are located, said casing being divided into segments and provided with an internal shoulder, a segmental cylindrical member that rests against the shoulder and engages the periphery of the diaphragm to hold it'in position, nozzles carried by said member, and intermediate buckets carried by said member and arranged in segments having joints that register with those in the-member, said intermediate buckets extending between rows of wheel buckets.

3. In a turbine, the combination of bucket wheels, diaphragms arranged between the wheels, a. casing within which the wheels and diaphragms are located, said casing being divided into segments, and a segmental annularmember that is mounted on the inner wall of the casing and is provided with a plurality of inwardly extending proiections that engage the periphery of the diaphragms and support them.

4. In a turbine, the combination of bucket wheels, diaphragms arranged between the wheels and having grooves in their peripheries. a casing within which the wheels and diaph-ragms are located. said casing being divided into segments, and a segmental annular member that is mounted on the inner wall of the casing and is provided with a plurality of inwardly extending projections having tongues that engage the grooves in the diaphragms and support them.

5. In a turbine. the combination of bucket wheels, diaphragms arranged be tween the wheels.- a casing within which the wheels and diaphragms are located, said casing being divided into segments and provided with an internal shoulder, a segmental annular member that rests against the shoulder and is provided with a plurality of inwardly extending projections that engage f is provided with a wheels and having the periphery of the diaphragms, and nozzles carried by said projections.

6. In a turbine, the combination of bucket wheels, diaphragms arranged between the wheels and having grooves in their peripheries, a casing within which the wheels and diaphragms are located, said casing being divided into segments and provided with an internal shoulder, and a segmental annular member that rests against the shoulder and plurality of inwardly extending projections having tongues that engage the grooves in the diaphragms.

7. In a turbine, the combination of bucket wheels, diaphragms arranged between the eries. a casing within which the wheels and diaphragms are located, said casing being divided into segments and provided with an segmental, annularinternal shoulder, a member that rests against the shoulder and is provided with a plurality of projections that extend inwardly over the wheel buckets and have tongues that engage'the grooves in the diaphragms, and nozzles carried by the projections, there being passages in said projections that supply the nozzles.

8. In a turbine, the combination. of bucket wheels, diaphragms arranged between the wheels, a casing within which the Wheels and diaphragms are located, said casing being divided into segments and provide. witlfauQinternal shoulder, a segmental annular member which rests against the shoulder and is provided with inwardly extending projections adjacent its upper and lower edges that engage the periohery of the two adjoining tdiaphragms ant support them, noz' cs ca ried by the projections, and inter mediate buckets secured to -the member between said projections. v i

In a turbine. the combination of bucket wheels, diaphragms arranged between thewheels. a casing within which the wheels and diaphragms are located, said casing being divided into segments and provided with an internal shoulder, a segmental annula-r member having one edge resting against the shoulder and also having joints that register with the joints of the casing,

bolts that secure the member to the casing,

projections that extend inwardly from the member over the wheel buckets and engage the diaphragms to support them, and nozzles' carried by the projections,-there being grooves in their periph-- casing beingdivided into segments, a segmental annular member arranged within the casing, bolts that secure said member to the casing, projections that extend inwardly from the member over the wheel buckets, there bein grooves in the inner surface of the gem er, one of the walls of which coincides with tions, segmental nozzles that are attached to said faces and have joints that register with the joints of the casing, flanges 'on one side of the nozzles that enter the a face of the projec-' grooves, flanges on the opposite side of the nozzles, and bolts that secure the last named .flanges to saidf'aces, in the projections that lead to the nozzles.

11. In a turbine, the combination of bucket wheels, diaphragms arranged between the wheels, a casing within which the wheels and diaphragms are located, said casing being made in segments, a segmental annular supporting member of U-shaped cross-section mounted in the casing, the projections of which engage the peripheries of a pair of diaphragms and support them,

and detachable nozzles carried by the mem-- her, there being passages in said member that lead to the nozzles.

12. In a'turbine, the combination of a segmental casing having an internal shoulder, a cylindrical member which rests on the shoulder at one end and has afinished. iface at the other end ner surface of the casing, said member having inwardly extendingshouldered projecwhich engages the inthere being passages t1ons,-diaphragms engaged by the projections, fluid discharging devices carried by the projections, rows of rotating buckets that receive elastic fluid from said devices, and intermediate buckets which are carried by the member and are located between the projections and cooperate with the rotating buckets.

In witness whereof, I' have hereunto set my hand this 25th day of January, 1912.

- OSCAR JUNGGREN, Witnesses:

BENJAMIN B. HULL, HELEN ORFORD. H

Genie: of this patent may be obtained for five cents each. by addressing the Commissioner of Patents. I Washington. D. C.

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