US881544A - Governing mechanism for turbines. - Google Patents

Description

' No. 881,544. PATENTED MAR..1908.

J. G. CALLAN; GOVBRNING MEGHANISM FOR TURBINES.

APLIOATION FILED JUNE 28. 1906.

3 SHBBTSSHEET 2.

J. G. GALLAN.

GOVERNING MEGHANISM FOR TURBINBS. APPLICATION FILED JUNI: za. Ipo.

PATBNTBD MAR. l1o, 1908.

a snug-snm' a. Y

Witnesses Johns-@wh f -stmtiun wlfiicli wil (entirely Sliul, all' lliu f incloSv/d in' a. casing.

H7' or other lluiil discharging ilcvirfus.

GOVERNING 'MECHANISM FR TURBINES.

No. Sem@ Spanne-ation of Leiters miem.

@wanted Mii-.rch i0, i908.

Application filed Juney 2S, l906 .Serial le. 323,8?6.

guw-'fi ling pri 1 ne nu i 1 vors'. a. govorning -nmunuuism nl' unpiu'vml uuusupply of mnt-ive l'luifl when lvlu. Snm'wl lw- Golnus a-lmnl'uuil, Lluil, is Wl'wn il ux( wlw n certain prei 'ined limit. llue uuulmnimn ih' simpl@ vin strilstiu'n, positivi in .ipuiulgiun mul the sluit-(ffl milf/hlm ijf-szuliljy' uml am-viirullly resellfy tho afttimlantwilflimit Llw (if any special .skill ou his parla In tlm aiizcmulmnying; druwix'igs illuzl'iruiiugg; (me of the @n'liudinuinlvs mi" .my ixwcn'Ln'm, Figure l is a. partial axial suction 0i :in elastic 'iiluid turbine; Fig. 2 a partial trm'lsvclsn section on` line l12W-f2, Fig. 1; and. Figs. 3, -4 and 5 are (lOl/Gils of the mncrgoncy 'vulva mcc-llal'xisn'.

ll rpmsnlzs the main :shalt of tlm turliiiw upon which a bucket wheel. 2 n'muntefl. This Wheel has one 0I' more rows u1" liuc-lu of suitable shape. yBel/wenn ille. rows ol" Wheel lmckms,l are internwiliaitfy liuclwts l carried by a support @l`l appropriati. iufm. The wheel 4sind irlternwclizize l'iuokets are v, To this casing, :i'vzLlYe chest (i iS Securvd which :ilsuiicts ns u. Sunni-wl, l' 01' ,suitiil'il nozzle/S 0I' ijliscl'uirgin-g deviens 7 which disclizirgu Stoa-Tn 01' otlmrplnstiu lluiil t0 drvc blu; v'vluel. Tlw nmllivc .fluidi aus from the liuckts iutoynn vxllausl; uumluii S whiuli may lead tu mother St nl nozzles :ind bucketsv ,if elle tuiliino lm nl the multi-stagni type., O1' to a Cinilclism, or to the ainiusplmiv.

Outil@ lm'lis of flic Wliecl 2 me )zualiings Si l flows `through the passage l] tullio, intcrur 2 of the :lu-st 6 wlwnco it pn..

lu tlm now/.lm vl 11s ilow is rgulaftod by a. th'ulztlc vzi'lvo 12 unilfi tlm control of a speed-resinunivie xlo'ilce lll of any suitable mmstruutii'in muuntml upon fullnn'ing in a. speen@ 'ill will "-15 :im i. .7

.fill

' trally through. the Valve.

E threaded into the up er end ot they hub 51, passes loosely throng 1 thc hub 5() and has a conical end of spindle 5S which passes ccn- This spindle is I the removable 6() and has a squared portion for receiving a Wrench. A stop pin 61 secured inthe member-4E) projects into the path 'of the disk 47 to limit its downward movement and keep the valve from dropping out when `assembling the machine.

When assembling the parts, the spindle 58 is either removed or it is unscrewedto draw its conical end within the hub 51. The lower portion ofthe liub is then slipped .over the eadof the stud and the spindle is screwed down to seat its conical end in the recess in thehead 56 to bringr the valve and the connectionl8 into alinenient. The disks l17 and 48 having been previously adjustediinay now be secured against displacement by the check nut 59.

To prevent injury resulting fromhanabnor? mal increaseot speed, l provide an einerturbine.

gency valve 26, which is loosely mounted on a stud 27, fixed in the upper part of the.

Achamber 10, so that it may when' released from a catch-28, 29 swing downward and close the entrance to passage 11, thus shutting off the steam supply and stopping thc T lic steam pressure in chamber 10 keeps the valve closed until it reset by the attend ant. For convenience in manufacturing, and assei'nbling the mechanism, both i parts 28, 29 of the catch are notched but the s handle and the arm.

notch in part 29 may be omitted.

The catch 28, 2f) is tixcd to a shal't 3U, rotatably, mounted above stud 27 in the upper part of 'the chamber 1t) with one end projecting through a wall of said chamber. An arm 3l, Fig. 3 is lixcdly mounted Aon this projecting end in such relation to part' 2S' that the arm is substantially horizontal when the parts .Zand 413 are in engagement, Fig. 1 'lhe arm has a handle 32 on a stud i sccurcd in the end of said arm. A rod 3' mounted to slide` in a swivel bearing 35 on the casing has a. reduced end portion passing freely through the. stud 323 between the 'lhe movement. ot the iod with relation to the arm is limited by the shoulder Sti and the nut 37' and may be adustcd by means olI said nut.

A spring 18 secured at one. end to the bcar-.

lng 35 and at the jother to the rod 34 norinally tends to torce the rod upward through the bearing toward the arm. The lower end ol thc rod is enlarged at t) to lorin a shoulder to engage a trigger Lt() mounted upon the casing. One arm ol' the trigger projects inward through thc casing into proximity to the speed-responsive device 13. Springs 4l upon this device forming an emergency gov-l ernor are i'orccd outward as the speed increases and the mechanism is so adjusted that these springs will strike thc aini 42 and trip the trigger t() permitting thc latter to release the shut otlI valve .26 when the .spoed reaches a prescribed limit lnder normal conditions, the parts are in the -iosition shown in'tull lines in Fics. .1 2 i v h .l

and 3 with the catch 2S in engagement with the projection 413 on the valve :2G and the portion 2t) ot the catch overlying the projection 4st on said valve. l3nt when the speed exceeds the desired limit and the trigger' is actuated, the spring 38 imparts a quick upward movement to the rod IM bringing the shoulder 36 into contact with the stud 33 adj jacent the arm 31. The impact of the shoulder against .the stud turns th arm .'31 nnd sin-itt 30 releasing the catch 123 from the projection 43 and bringingl the part 29 forcibly against projection -14 with a hammer-like blow to ovcrcon'ie any possible sticking of valve 2G and to move. it quickly into approximatel)T closed position where the steam pressure will ctlcetively close it and hold it closed. The resultant position. ot the mechanism just described is shown in dotted lines Fig. 3.

When it is desired to reset the mechanism betetA starting up again, the attendant shuts ott the steam by a hand valve in the supply pipe and turns the arm LS1 b v means ol its handle in the direction ot the arrow` Fig. 3. rihe cani-like portion of the catch member .29 engages the projection t3 and opens the. valve Z6 after'tlie arm has moved through aonoximatel t .100 from its dotted .iositioi'n l l l Fig. in. Further motion tirst releases the valve t'roin the member 221. 'lhcn continued rotation oi the arm through about 180 to lull line position, Fig :3, causes the cani portion ot themembcr to again open the valve and' brings the projection L13 into engagemtuit with the, notch in the end of thc catch member 2S where it is held b v the weight ot' the valve.v and the action of' the steam upon the valve alter steam is turned on to start up again. The `notch being in line with the center ol the shalt 3io the pressure on the valve has no tendcncv to turn the c.at\li. Fig. 4 shows thc parts in a position intermediate the dotted line position ltig. Il and thc normal position to which they ure being 'moved After the valve and catch are set in open position, Fig. l as above de scribed, the arni 31 is in position loi the nt-A tendant to torce the rod 34 downward against the tension ot spring 38 and engage thc shoulder 339 with the trigger 4t).

The location of the governor outside the steam space makes it easily accessible lor inspection and adjustment. Access to the governor valve. l'or the same purposes is at- Vso forded by the cap 6i).

While the enii-rgenry -vnlvo is reset hy the siniple operaifiioi'i olf lin'ning' :iv handle :nid engaging :i rod iiilh :i trie'- rlho governing mechanism hns her-n illustrated in connertion with one type ol' turbine hut it may he need with :my l'orin of elasticlhiid tnrhine. l i

In accord-mee with the provisions ol' die patent statutes, I have described the prineiple ol operation of niy invention together with the apjierntus which l consider the heet embodiment thereof 3 hnt l desire lo have it 'understood that the apparatus shown in only illustrative und that the inreiition cnn vhe enr- Aried ont hy other nienrs.

that l Gleim as new und desireto secureby Letters Patent/of the '[.i'nited States, is:

1. ln it goiferning mechanism, the eoinhinii-tion el :i valve that has :i tendency :it :ill times to lclose, :2i catch which normally prevents the valve troni closing, and zi nierins `l'or rotating the cinch zitter it line released the Valve to reset it.h j

2. ln a ,egovelniiner nieohiinisni, :in einergeney valve, a enteh whiei may engz'nfre the Valve to hold it open, means for rotating' the catch to engageit with the vali/'o ,nnd ineens rendered operatine hy :in increase of speed ahove e prescribed limit which releases the valve troni the catch. j l

ln o governing mechanism, an einerA geney valve, ii. catch which nniy engage the vulve to hold it open, iiiezins rendered Opern-- tive hy an increase o'l speed :Lhove n, pren scribed liinit to release the vulve, :ind ineens for ri'itntinj?r the catch lo open and reset the vulve.

4f. ln n governing;` ineclninisin, :in einer" geney valve, :i eriteh having irpl'nrniity el' ineinl'iers one ol' which engages :i portion olthe valve to hold it open while :inother 'is located adjacent another portion of the vulve',

mea-ns rendered operative by :in increase-oi speed above :t prescribed limit which :irtii- :ites the. mitch to release the vnlve :ind to inipart a blow to the second portion ol the valve, and ineens lor rotntinijr the entch to reset the valve in open. position .y

In si governing mechanism, ,on einerA gency valve having; zi pl nrality of projections, :i catch havingr oppositely disposed nieinhers one ol which eniniges on'e'o'l the projections while a second ineinhcr is :rdjiieent another projection, and ineens rendered Ojmrzitive hy :in increase ol speed ahove :1. prenprihed liinii which aetiintes the ente/h to release the lir,L

projection :ind to impe-rt ai hlon' to the other projection to close the vulve.'

(l. ln ii governing inechnninni, :in einergenejf valve having :i plurality olt project ions. :reiith having oppositely disposed nieinherf; 1

vone of which engages one el the projections while a second ineinher is iidjiicent:inoiher f projection, ineens 'rendered operntive hyfnn.

` projection lor rin:

iin-resse oi' `spi\ed :ihove 'prenerilved liinit whieh :iilniites the cfil'eh loreieziSe the lirst projection :ind to inipnrl ii hloji' lo the other piojeci ion lo close the Valve, :nii'l ineinislor i'en 7. ln i gi'erning' nieehiinisiin, :in einerrency valve, :t catch lisiviner opposilely disposed nienihers one of which ongrngeo the vulve to hold it open while :inother member is located :idjneent n. portion et the valve, ineens rendered operative hy en increase of speed above jnesciihed liinit 'Whicl'i aetn- :itesthe mitch lo release the vzilve ind io ini port n. -hlow lofsiiid portion to elose the valve, :ind :i menne lor rotating the cri-tch to open :indi'esrl the voire. l

ln fr. governing; ineehnninin, a stud, an emergency viiivo loosely mounted on the .st-nd rind hon/ing :t pifi'jeetion snbstnntiftlly in line with the valve :ind another projection at in :ingle to seid vulve, :i pivoted enten having tirer@ oppositely di posed ineinhors onel ot whieh engages the lirst j'irojeetion to hold the vzilve open while the other overlies the .second projcel'-ion, rind ineens rendered ope" :iti'ife h v on increase ol speed :ihove n pre eerihed liniit which :ietiiziteii the catch toreleone the first project-ion :ind to impart n haine nier-like 'olonY to the other projection` 'to close -Ithe vrdve.

i). ln' :i `@governing inechnnisn'i, :in einer- ;feney vnlre, :i entch which normally holds the vulve open :ind 1S l:ilse employed to reset it idler heini; cloned, :1nd, n ineens 'for operatj ingr the rnteh to reset the vulve.

il). lit-n, gerer-ning ini'iehfinigni, the eoinhination ol :in einei'geiioj; vzilve, -LL cntcl'i to hold the vulve open, zr derieel'or releasing the E:ind ruin-like portions, projections on the valve onel ol' which engages the notch while the other is disposed :idjnceiit :i eatin portion, niezins rendered operiitivo hy nn increase of speed :ihove :i presei'ihed liinit which releases the viilve. troni the notch find brings the can: portion into l'oicihle Contact with its :idjncontprojeetion, :ind ineens for ninniinlly operating; the entrh. lo bring,l :i enfin portion into engngenient with the Vlirst mentioned ,l ting the volvo :ind mitch.

ll, ln i: governing ineohiinisin, :in einerrggoncv viilvo, :i enteh which engiignjii the valve lo hold it open, :i nlmli iipoii which the enti-,h is nioiinlei :in :irni iipoii the LQhnit, ai, rod having :i :ilidinrreoniicction willi the :irni, :'iy

.sin'ivel'heiiriing lei' the rod, iihiitnieiits on the.

rod for limiting; the slidiing,` inoveinei'it, :i spring teni'linii to nieve :in :Llnitinent into en`- giigeinciitivitli the, :irin to :ietinite tiie mitch and ielease the valve, a trigger for holding the rod/against the action of the spring, a Speed-responsive device which :minutes tho trigger to release the rofl when the s eed rises to :i prescribed limit, and a lia-nd e on the :iunior manually resetting the catch and valve.

ln Witness whereof; l Vlizwo heronno soi' my lifiml this 25th day of June, 1906.

JOHN Gr. (IAAN.

innossos: y

JOHN A. lxloMANUs, Jp.,

HENRY U. WESTENDMW.

l l l

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