US1003204A

US1003204A - Elastic-fluid turbine.

Info

Publication number: US1003204A
Application number: US54246710A
Authority: US
Inventors: Charles Bemis Rearick
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-02-07
Filing date: 1910-02-07
Publication date: 1911-09-12
Anticipated expiration: 1928-09-12

Description

O. B. REARIGK.

ELASTIC FLUID TURBINE.

APPLICATION FILED FEB. 7, 1910. I 1,008,204. Patented Sept. 12,1911.

2 SHBETS-SHEET 1.

w/mssses ATTORNEYS B. REM-Mini.

ELASTIC FLUID TURBINE.

APPLICATION FILED FEB. 7, 191 LQQQ QQLL Patented Sept. 12, i1}

2 SHEETSSHEET 2.

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WITNESSES VENTQR ATTORNEYS REARICK, of the city, county, and'State of UNITED STATES Pars-NT oFFIoE.

CHARLES BEMIS BEARICK, OF NEW YORK, N. Y.

ELASTIC-FLUID TURBINE.

Application filed February To all whom it may concern:

Be' it known that 1, CHARLES Emits New York, have made a certain new and useful Invention Relating to Elastic-Fluid Turbmes, of whlch the following a specification, taken in connection with the accompanying drawings, which form part of the same.

This invention relates to elastic fluid turbines and relates especially to steam or other elastic fluid turbine construction of the double flow type in which a duplicate series of secondary chambers are provided on both sides of the primary wheel chamber to receive steam therefrom, the shaft cars rying interchangeable bucket wheels run ning in said chambers, there being a plurality of wheels in each of the lower stage secondary chambers with which nozzle members having special return passages may cooperate.

In the accompanying drawings showing in a somewhat diagrammatic way several illustratlve embodiments of this invention,"

F igure l is a vertical longitudinal section. Fig.2 is an enlarged transverse sectional detail showin the nozzle member construction. Fig. 3 1s a cross-section thereof taken substantially along the line 3-8 of Fig. 2. Fig.4 is a partial longitudinal section showing a modified casing construction; and. Fig. 5 is a transversedetail section showing a difierent return passage arrangement. Fig.

6 is a vertical longitudinal section showing a different construction.

In the illustrative embodiment of this invention, the turbine casing may as indicated be formed as by casting in several longitudinal divided

sections

1, 2 which of course may be rigidly but removably secured together in any desired way as by suitable bolts 73 and cooperating nuts 74 securing together suitable integral flanges 71, 72 on the casing sections as indicated in Fig. 6. The casing may be provided with a number of transverse partitions, such as the end partitions and thevarious intermediate partitions 4:9, 50, 51 and 52, indicated to form the

several chambers

12, 13,1 1, 15 and 16 shown in Fig. 1. The primary chamber 14 may as indicated be located adjacent the center of the casing and connected with the annular admission passage!) and communieating admission pipe tit-hrodgh which the steam or other Inotivefluid maybesupplied.

Specification of Letters lfatent.

Patented Sept. 12, 1911 1910. seriainois iaie'ix On either side of the primary chamber du pllcate-series of secondary chambers maybe arranged so as to receive motive fluid simultaneously from the primary chamber'in this double flow construction.

The shaft 3 may be mounted in suitable bearings 5 of any desired construction and pass through suitable stuffing boxes 4 in the end partitions of the casing. The bucketed wheels of any suitable construction may be mounted on this shaft in any desired way and in order to standardize the construction the wheels may all be interchangeable and a plurality of wheels may be mounted in each of the lower stage secondary chambers so as to give the proper increase in wheel capacity therein and allow the first stage wheels to be used at full capacity.

As indicated in Fig. 1. the steam flowing into the different nozzles 43 cooperating with the wheel 26 in the primary chamber 14 4 passes through the wheel buckets the desired number of= times and then is dis charged from the primary chamber through the two series of suitable nozzles 18, 19, simultaneously deliverering it into the buckets of the wheels 25, 27in the first of the

secondary chambers

13 and 15. Since the steam has expanded considerably by this time this arrangement takes care of a degree of expansion which doubles the steam volume. If this ratlo of expansion between the various series of nozzle members20 and 61 may be used in the chamber 16 'so as to supply steam from the preceding chamber to the buckets of the two

wheels

28 and 29. Similar

separate nozzle members

120 and 161 may cooperatewith the twb

low stage wheels

23, 24 in the chamber 12 at the other end of the turbine. It is desirable, to have the bodies of all these nozzle members interchangeable and provided with similar return passages to pass, the steam a number of timesthrough the wheel buckets before it is finally discharged therefrom. This can be arranged by providingthe'nozzle members with supporting nozzle tubes similar.

to those of the nozzle members 19 so that when mountedin the partition 52 they propferly cooperatewith the adjacent wheel-28. The'nozzle members 61'may have'the same "bodies, including the. nozzles and return passages,- andbe provided with longer nozzle tubes ,so' as to project farther from the supporting partition 52 in which they are 'circumferentially' displaced or interposed be-- .tween the series of-nozzle members 20 and by projecting beyond the same support their nozzle members so as to properly coeperate with'the outer wheel 29. If desired, however, special nozzle members, such as 17-,

' may be-provided in the lower stage secondary chamberssoas to simultaneously supply theiplurality of wheels as 23, 24 ar-- ranged therein. ,As indicated at the left of I Fig. 1, sucha-nozzle'member mayhave a vplurality offluidxpa'ssages 21, 22 to simultaneously supplyfthe buckets of the two wheels so-that' the steam after passing a plurality of times therethrough is finally discharged into the chamber. 12, preferably provided with an annular exhaust s ace communicating withfthe exhaust pipe the opposite'chamber 16'having a similar passage and exhaust pipe 8 as indicated.

h ==chamber 16 at the right of Fig. 1 tosimultaneously supply steam through their multi- Special nozzle members, such as 117, may provided in the low stage secondary plefluid passages 121, 122 to the buckets of the'two

wheels

28, 29. 'If desired, however,

ly passages-44'shown in Fig. 4, maybe prov ided to supply the motive fluid to the outer heels in the lower stage secondary chambers. The steam which has been delivered through the nozzle member'47 and passed through the wheel 27 is delivered into the Epecial annular or otherwise arranged supfi1' st secbndary chamber 15 and then may simultaneously pass through the nozzle member 46 and wheel 28 and the supply pasf'sage 44 and the nozzle member 45 and outer wheel 29 before being discharged into the exhaust space 53. .In this way the tubes of the nozzle members .45 may be straight and arranged radially in suitable plugged radial nozzle apertures It is usually desirable to similarly arrange the nozzle members as 43 in the primary chamber and these supporting nozzle tubes may he firmly held within their nozzle apertures in any desired way as by expanding or otherwise, and if desired special threaded nuts such as 63 .may be arranged on suitably threaded extensions of these nozzle tubes to hold them in position. By arranging the nozzle'members so as to deliver alternately to both sides of the buck: ets of the wheel 26 in the primary chamber the longitudinal thrust is completely neutralized in this instance and the duplicate series 0 secondary chambers and nozzles on each side of this primary chamber have ex-. actly equal and oppositely directed end thrusts so as to entirely eliminate all trouble from this source. v

Asindicated in Fig. 1, the nozzle apertures may be longitudinally alined by boring them through the various'partitions at the desired circumferential interval so that the nozzle members will be properly spaced about the wheel to operate it at the desired capacity. In this way proper alinement of the discharge end 42 of this tube to the suitably shaped no'zzle 30 integral if desired with the nozzle member61 and communicating with the wheel buckets 36 which of course may be formed in any desired way. The nozzle member '61 may be provided with any desired number of return passages so as to pass the motive fluid any number of times through the wheel buckets before it isfinally discharged into the chamber. These return passages may be formed by the diaphragms such as 64, 65, 66 in the nozzle member and if desired suitable distributing flanges such as 33, 34 may be arranged projecting from the rear diaphragm to or adjacent the succeeding diaphragm ahead as the wheel rotates so as to form the curved return passages 31, 32, preferably constituting a gradually expanding series, each of which has a greater cross-section than the preceding one. Since there is a tendency for the motive fluid to bank up at the-forward sides of these return passages their receiving endsmay be relieved at the forward sides so as to accommodate this collection of the fluid and.

this may be accomplished by inwardly flaring the receiving end of the return passage at its forward side, as indicated in Figs. 2 and 3 by inwardly bending or warping the corresponding portion 38 of the distributing flange 33, or if desired the distributing return passage may be relieved at this point by removing the distributing flange substantially along the line 35 shown 'in Fig. 5 which is a View taken in the opposite direction "from Fig. 2. It is also beneficialv in some cases to provide these return passages with open forward sides such as 40 where Use geous'to provide these diaphragm-s with suitable relief apertures such as 87 adjacent the central portions of the faces cooperating with the wheel which also tends toprevent choking.

Having described this invention in connection with a number of illustrative embodiments, forms, proportions, numbers and arrangements of parts, to the details of which disclosure the invention is not of course to be limited, what is claimed as new and what is desired to be secured by Letters Patent is set forth in the appendedv claims.

1. The elastic fluid turbine, comprising a divided casing, 'provided and duplicate series of secondary chambers on both sides of said primary chamber and receivlng motive fluid therefrom, a shaft carrying interchangeable bucketed wheels running in said chambers, thermbeing a plurality of said wheels in each of the lower stage secondary chambers and nozzle mem bers cooperating with said wheels and having supporting nozzle tubes mounted in longitudinally alined nozzle apertures in said partitions, said nozzle members having interchangeable bodies comprising integral .re-

turn passages and the nozzle members cooperating with the outer wheels in said lower stage secondary chambers having longer nozzle tubes interposed between those of the nozzle members cooperating with the inner Wheels in the same chamber.

2. The elastic fluid turbine, comprising a casing provided with partitions to form a primary chamber and duplicate series of secondary chambers on both sioes of said primary chamber and receiving motive fluid therefrom, a shaft carrying interchangeable bucketed wheels running in said chambers, there being a plurality of said wheels in each-ref the lower-stage secondary chambers and a series of nozzle members having integral return passages cooperating with each of said wheels.

3. The elastic fluid turbine. comprising a longitudinally divided. casing provided with partitions to form a primary chamberand' duplicate series of secondarv chambers on both sides of said primary chamber and receiving motive fluid therefrom. a shaft car-' rying interchangeable bucketed wheels running in said chambers. there being a plurality of said wheels in each of the lower stage secondary chambers and a series of nozzle members having integral return passages cooperating with each of said-wheels.

4. The elastic fluid turbine, comprising a.

, longitudinally divided casing provided with partitions to form a primary chamber and duplicate series of secondary chambers on ,tubes mounted both sides of said primary chamber and receiving motive fluid therefrom, a shaft carrying bucketed wheels running in said chambers, nozzle members cooperating with each of the. wheels in said secondary chambers and having supporting nozzle in longitudinally alined nozzle apertures, in said partitions and .nozzle members cooperating with the wheel 'in-1said primary chamber and having supporting nozzle tubes mounted in substantially 'radial nozzle apertures in said casin 5. The elastic fluid turbine, comprising a longitudinally divided casing. provided with partitions to form a primary chamber and duplicate series of secondary chambers on both sides of said primary chamber and receiving motive fluid therefrom, a shaft carrying bucketed wheels running in said chambers, nozzle members cooperating with each of the-wheels in said secondary chambers and having supporting nozzle tubes mounted in longitudinally alined nozzle apertures in said partitions and nozzle mem-- bers cooperating with thewheel in said primary chamber.

6. The elastic fluid turbine, comprising a longitudinally divided casing formed with a series of secondary chambers, a shaft-can rying interchangeable bucketed wheels running in said chambers, there being a plurality of said-wheels in each of the lower stage secondary chambers and a series of nozzle members cooperating with each of the wheels in said secondary chambers and having supporting nozzle tubes mounted in longitudinally alined nozzle apertures in said casing, the nozzle members cooperating with the outer wheels in each of the lower stage secondary chambers having longer supporting tubes interposed between the shorter supporting tubes of the nozzle members cooperating with the inner wheels in the same chamber.

7. The elastic fluid turbine, comprising a casing provided with a chamber. a shaft carrying a plurality of buc'keted wheels running in said chamber, nozzle members comprising return passages cotiperating with each of said wheels and having supporting nozzletubes mounted in nozzle apertures in 'the partition forming the side of said chamber, the nozzle members cooperating with each of the wheels farther from said partition, being provided with longer supporting tubes interposed between the supporting tubes of the nozzle members 00- operating with the inner wheel.

8. The elastic fluid turbine, con'iprising a chamber, a bucketed wheel running in said chamber, nozzle members cooperating with said wheel, each of saidnozzle members being provided with diaphragms having relief apertures and distributing flanges extending forward from said diaphragms to form a graduallyexpandingseries of re-- turn passages having inwardly open forward sides, the receiving ends of said return passages having inwardly flaring for ward sides to distribute the motive fluid received from the wheel buckets before again passing the same therethrough.

9.- The elastic fluid turbine, comprising a chamber, a bucketed wheel running in said chamber and a nozzle member cooperating with said wheel and provided with dia-' phragms having relief apertures and distributing flanges extending forward from said diaphragms to form a gradually expanding series of return passages having in wardly open forward sides, the receiving ends of said return passages having re- 1 lieved forward sides to distribute the mothe receiving ends of said return passages having relieved forward sides to distribute the motive fluid received from the wheel buckets before again passing the same therethrough.

11; The elastic fluid turbine, comprising a chamber, a bucketed wheel running in said chamber and a nozzle member cooperating with said wheel and provided with diaphragms and distributing flanges between said diaphragms to form curved return passages, the receiving ends of said return passages being inwardly flared at their forward sides to distribute the motive fluid received from the wheel buckets before again passing the same therethrough.

12. The elastic fluid turbine, comprising a chamber, a bucketed wheel running in said chamber and a nozzle member cooperating with said wheel and comprising diaphragms and a distributing flange between said diaphragms to form a curved return passage having an inwardly open-forward side, the receivmg end of sa1d return passage having an inwardly flarmg forward side to disttribute the motive fluid received from the wheel buckets before again passing the same therethrough.

l 13. The elastic fluid turbine, comprising a chamber, a bucketed wheel running in said chamber and a llOZZlQ'IDQlDbQI' cooperating with said wheel and comprising a return passage provided with a distributing diaphragm, the receiving end of said return passage having a relieved forward side to distribute the motive fluid received from. the

wheel buckets before again passing the same therethrough.

14. The elastic fluid turbine, comprisin a chamber, a bucketed Wheel running in sai chamber and a nozzle member-cooperating with said wheel comprising a curved return passage provided with a dis't-ributin'gfian e within the same, the forward side -'Of-'S 1'1d distributing flange being" inwardly flared at the receiving end of said-"return passage to i distribute the motive fluid received from the wheel buckets before again passing the same therethrough.

15. The elastic fluid turbine, comprising a chamber, a bucketed wheel running in said chamber and a nozzle member cooperating with said wheel having a curved return passage provided with-an inwardly flaring forward side 'at its receiving end and a substantially parallel section at its discharge end to distribute the motive fluid received from the wheel buckets before again passing the same therethrough. a

16. The elastic fluid turbine, comprising a chamber, a bucketed wheel running in said chamber and a nozzle member cooperating with said wheel andvprovided' with din-- phragms and a distributing flange extending forward from one of said diaphragms adjacent the other to form a curved return passage having an inwardly open forward side, the receiving end of said return passage having an inwardly flaring forward side to distributethe motive fluid received from the wheel buckets before again passing the same therethrough. 17. The' elastic fluid turbine, comprising a chamber, a bucketed wheel running in said chamber and a nozzle member cooperating with said wheel and provided with diaphragms having a relief aperture and a distributing flange extending forward from one of said diaphragms to form a curved return passage between them having an in wardly open forward side, the receiving end of said return passage having a relieved forward side to distribute the motive fluid received from the wheel bucket-s before again passing the same therethrough.

18. The elastic fluid turbine, comprising a chamber, a bucketed wheel running in said chamber and a nozzle member cooperating with said wheel and provided with diaphragms and distributing flanges extending forward from said diaphragms to form a series of curved return passages having inwardly open forward sides, the receiving ends of said return passages having relieved forward sides to distribute the motive fluid received from the wheel buckets before again passing the same therethrough.

19. The elastic fluid turbine, comprising a chamber, a bucketed wheel running in said chamber and a nozzle member cooperating with said wheel and provided with diaphragms having relief apertures and distributing flanges extending between said diasecondary chambers receiving motive fluid therefrom, a shaft carrying bucketed wheels running in said chambers, there'being a plurality of said wheels in one of the lower stage secondary chambers and nozzle members cooperating with said plurality of wheels and having connected nozzle tubes mounted in nozzle apertures in the adjacent partition, said nozzle tubes beina provided with a separate nozzle passage leading to,

each nozzle member.

'21. The elastic fluid turbine, comprising a longitudinally divided casing provided with integral partitions to form a primary chamber and duplicate series of secondary chambers on both sides of said primary chamber and receiving fluid therefrom, the shaft carrying bucketed wheels running in said:

chambers, nozzle members cooperatingwith each of the wheels in said secondary 0 ambers and having supporting nozzle tubes mounted in longitudinally alined nozzle apertures bored in said partitions from the outer exhaust ends of said casing.

22. The elastic fluid turbine, comprising a longitudinally divided casing provided with partitions to form a primary chamber and duplicate series of secondary chambers on both sides of said primary chamber and receivin motive fluid therefrom, a shaft carrying ucketedwheels running in said chambers and nozzle members cooperating with said wheels and having 'sup orting nozz'le tubes mounted in longitu inally alined nozzle. apertures formed in said 'artitions from the outside low pressure en S ofsa id-l casing. Y 1

23. The elastic fluid turbine, compr sm a longitudinally divided casing provided with integral partitions to form a primary chamber and duplicateseries of secondary chambers on both sides of said primary chamber and receiving motive fluid therefrom, a

shaft carrying'bucketed wheels running in.

said chambers and nozzle members coopcrating with each of said wheels.

24. The elastic fluid turbine, comprising a longitudinally divided chamber, a bucketed wheel running in said chamber and a nozzle member coiiperating with said wheel and provided with diaphragms and distributing flanges between said diaphragms to form curved return passages, the receivin ends of said return passages being inwar y flared at their forward sides to distribute the motive fluid received from the wheel buckets before again passing the same therethrough.

25. The elastic fluid turbine, comprisin a longitudinally divided casing provided with partitions to form a primary chamber and duplicate series of secondary chambers on.v

both sides of said primary chamber and receiving motive fluid therefrom, a shaft carrying bucketed wheels running in said chambers and nozzle members 'coiiperating with each of said wheels. 1 7 CHARLES BEMIS REARICK. j Witnesses: i I i i HARRY L. DUNCAN, Jesse B. KAY.