US1399758A - Apparatus for conserving motive fluid - Google Patents

Description

W. BR FLANDEHS. APPARATUS Fon CoNsEm/ING Mo'rlvE FLUID. APPLIMHON FILED JU-LY 6, i518.

: MQQXYMD Patented Deu. M, WZL

.A T T ORNE YS.

1BRS. U1? 'WLlINSBUlELG. PMINSYLVANIB.. ASSIGNOB, TOW'ESTING- tfl d.; MANUFACTURING C0.. .A CORPORATION OF PENNSYLVANIA 150B, CONSERVING MOTXVE FLUH).

tlrtig'iiial application .To all eff/wm zz may conf-ern.:

lle it known that l. ll'snnns ll. -l"I..-\.\'Dens.

t a eltizen oty the, tinted htates. and a resident olill'ilkinshurg. in the county ot .lille- Vgrl and State ot' lllennsylvania. have made water heaters and particularly heaters which are continuouslgr or at times during their operation subjected topressures above atlor discharging' air and troncondensable Without Wasting steam.

, .iurther object. oit the invention is to duce a new and improved t'eed water tingl system in which means are employed maintaining the pressure otl the steam .ly constant and in "which simple and improved means are employed tor venting air or non-condensable zgases delivered to the ed Water heater.

llt tfurther ohject is tdprndure a system `for tine' leed Water and tor conserving the e 'lahle for heating the feed water. mproved means `are employed for tir and noncondensable gases init ,ic l into the system tvith the steam or the Water to he heated.

and other objects. which will be liii-arent throughout the further de- ,ptimrot' my invention are attained by means of a leed water heating system herein described and illustrated in the drawing' ac*A companying; and "forming a part `hereot'.

lnthe drawing lhave illustrated dia- Lejrannnatically a leed Water heating system. which toi-fins an embodiment of my invention.

.rered to the feed T.vater heater suhstair Specicaton of .Letters Patent. Patinten@ Magg p3@ 192i ma .ruiy 22, i915, serial no. 41.22. Divided and una applicatie med July e,

' serial No. 243,656.

Inpower plants. orl similar install-ations, it is customary to deliver the Steam eX- hausted from the steam driven auxiliaries to a feed water heater. where it is employed 1n heating the Water prior to its delivery to the steam generators. lt will he apparent that it' the exhaust steam so delivered to the heater is sutlicient-rn quantity to heatthe feed Water to a determined temperature durmg periods ot full load on the steam gener'- ators. it will be in excess during periods ,of

light load. since the load on the generators l varies in approximately direct ratio to variations in the yload on the prime movers or main power developing units. Whereas the amount of steam exhausted from the auxiliaries remains substantially constant regardless of variations. in the load on the prime movers. n the other hand. it' the number ot' auxiliaries. delivering exhaust steam to the feed Water heater. is so proportioned that the steam delivered to the heater during normal loads on the main power `units or prime movers. is just sutlicient to be economically employed in heating the feed Water.' there will not be sulicient steam to raise the feed Water to the desired temperature when the main power units are developing maximum poujer.

ln order. therefore. to conserve the steam and to increase the eco iomygof the entire plant or installation, means have been provided tor automatically delivering" the excess steam which cannot he etliciently employed in'the'feed water heater to al power developing mechanism or some other apparat-us in which the heat ot the? steam can be usefully employed. Means have alsobeen'employed t'or automatically augmentingr the supply of heating steam by delivering additional steam to the heater when .the nor mal source ot heating steam supply is insuflicientto maintain the t'eedtvater at the el remoral'ot the air and other non-condens atmospheric pressure.'

able fluids from the: heater Without dissipatino' heat energy.

tMy invention overcomes this difliculty, and, as illustrated, includes a feed water heater which is adapted to receive steam under pressure and is provided with a vent port for venting air or other non-condensable gases from the heater. The vent port communicates with apparatus of suoli capacity that it is capable of efficiently or economically employing the fluid vented from the heater during the periods of greatest fluid pressure within the heater. ln the apparatus illustra-ted, the .means for utilizing the vented fluid is shown as an auxiliary heater vwhich operates to condense the steam vented from the main heater and which also abstracts '-heat from the air or other noncondensable gases vented from the .ineiu heater. y

The illustrated embodiment of in y invention includes a prime 'mover or main power developing unit 3,-Wh1ch is illustrated diagrammatically as a steam turbine, having aA low pressure stage 3a between two rotor sections 3 and 3c which are operated in series A by'high pressure steam entering the turbine at 3d and exhausing into a ,condenser e,

ivhichinay be of any type to which condens `img' Water is delivered by means of a pump 5,

through a pipe or passage 6, the

pump re c'eivingj water from a pipe 6.

I have illus- /trated diagrammatieally a Asteam turbine 7 Vfor driving the pump 5. This turbine receives steam through a pipe or passage 8 and the steam* exhaust therefrom is delivered through a pipe or passage 9 to a receiver or exhaust main 10, with which the exhaust of other steam iven auxiliaries may communicate. I have also shown another auxiliary turbine 7 arranged to discharge into the exhaust main 10 by means of a pipe 9E.

A feed Water heater 11 is diagraininati1 cally illustrated in the drawing and as shown receives heating fluid from the receiver 1.0 through a passage 13 which is provided with horizontallyY disposed heater 11 is ofthe Contact type and coinprises a closed receptacle having an air vent connection 12 at one end and an inlet steam connection 13 at the other end. #The vent connection communicates with a heater 14. of the surface type,--shown as' located above the Contact heater 1 1 and to which all of the Water to be heated is delivered prior to its delivery tothe surface .hls'iten As illustrated, the heater 14; is oi the surface or closed type and is air vent 15, which is shown as eonununioating With the atmosphere. lVater to be heated is delivered to the heater 14 through a pipe 16, and after traversing;r the tubes lli of the heater 14, is delivered through a pipe 17 to the spray nozzles 18 of the It will be apparent to those skilled in the art provided with an' lie/:iter 11.

that various types of heaters may be einployed and that the details of coi'ietructii'in oic both the heaters .may he materially inedilied Without in any way departing 'lroin the spirit or scope oi the iuventioil set ilorth by the appended claims. ln the drawing' l have illustrated a condensate return pipe 14.- communicating with the heater il and with the heater 1l below the normal unter levelI of that heateu Other menus may be emploved for disposing of the Water of con densatioii, but Where an open communication such illustrated is employed.y time heater lll should cient height to prevent Water Jfrom heine' 'forced from the heater 11 into the healer lll.

The working passage ot' the turbine Il coinmunicates witlilthe receiver ill through 'a syst-cm oi' piping;v lll. .fis illust/intel. lelie piu ying' 1l) includes an ordinary; lore el" pressure regulating* valve coninionljiY lmou'n 'as e constant pressure or heat balance valve which T. diagrammatically illustrated ai" E21. The valve 2l is so arranged that it 'will open in response to the pressure of the lluid in 'the receiver l() and deliver lfluid therefrom to the turbine 3, when the pressure ".vitnin the receiver exceeds a determined pressure. 'lhc pipe 19 also 'includes :i manually operati-xd valve 22 `for permaneiuily shutting; oil" coni muuication between the turbine and the receiver Land the receiver may and pre'crrihly will he provided 'with a Lvty or popoli valve lQQ such as is ordinariliy employed 'lor relieving; excessive pressure. The valve is also arranged to open in response to a dccrease in pressure within the receiver 10 and to admit augifineutingr 'Huid or steam from thc workin;Y passage of the turbine Sl to the ceiver; For this reason., the piping 19 prete erahiv communicates with the working pas sage of the turbine ai such :i point that tlie pressure norma lv existing al' the point of connection is substantially equal to the pressure Which-it is desired to maintain Within 'the receiver 10.

Assume tor the purposes of description that 100,00() pounds et u'aier are to be heated per hour troni lo 216 lland that the receiver 10 receives 20000 pounds of er haust steeni per hour frein the varil` is sources communicating with it. Assume also that the constant i'iicssure or h it balance valve 21 is so adjusted that it will not open in reevonse to an excess pressure in receiver .l0 until the pre nrc in the rece is equal to or exceeds 6 pounds ahso.. llnder Such conditions a pre 1ere olf lll pounds absolute will he normally main tained in the heater 11, and steam will ilove troni the heater through the vent' pipe lf. 'to the heater 14 in which atmospheric pics` sure (14.7 pounds absolute) is an l duc to the vent 'llieing open lo hu i, phere.

we raised above he heater ."l a sulli- Y' beater lt.

Lanarte l tbe formation oli scale in tbebeater it and consequently a surface beater sucb ae illus trated may be employed. l'be Water atteipassing tbrougb tbe beater it, isdeliyered to tbe beater 11, Wbere it is mined. Witb tbe steam entering;r tbe beater trono tbe receiver 10. ts a result of tbe mixture et tbe-steam and water approximately 1d, pounds ol steam itself heated to tfltlo Vl?. llnasn'iucb as only 200ml-1000G pounds, z'. c. 12,000 pounds ot the available steain can be employed in beatingr the feed water. tbe remaining 80d@ will cause the constant pressure talee 2l to litt and tbe excess steam will be delirered to tbe main porter developing.r nnit 3 and `will do useful Work tberein in expanding' to con` denser pressure. lt will .be obvious that Whenever there is more steam available tban can be condensed in tbc two beaters ll and la that tbe pressure in tbe exbanst or re ceiver 10 and in tbe beat-er 'll will be atleast equal to tbe pressure required to litt or open soon as tbe pressure in tbe exhaust rnain or receiver l0 falls below lo pounds absolute, it will open and deliver stearnv troni tbe main poner un it to tbe receiver and tbereby maintain approaiinately lo pounds pressure in the receiver.

From tbe abone deocription it will be appaflent that by properly proportioning tbe vent or passage 193 ot tbe beater ll, Witb respect to tbe capacity oi tbe beater it, tbe

beater l1 will not only be properly rented,

but all of tbe Steam delivered to it will be ellicienty employed in beating tbe leed on tei"u As is apparent from tbe above descri tion, tbe rent paseage 152 and actuating niecbanisin of tbe yalye itl sbould be so proportioned rbat tbeA yaly'e al will open and relieve' tbe pressure, nitbin tbe receiver l@ or beater' 1t, oben tbe pressure conditions are snob tbat tbe rent passage l2 will pass more llunl tban tbe apparatus conininnicatiinhiv with 'it is capable ot eblectiy'ely utilirinpg. Wbile l bare shown tbe beater lt arranged to de0 liner tbe water pression,r tbrougb it to tbe beater 11, it willbe apparent that this Water nt tney be utilized elaenbere after it is beated are condensed and tbc AWeber is' by tbe beater lll and tbat tbe beater 1l may ybe replaced'by any apparatus capable ol utilining loir pressure fluid. lt will also be apparent tbat various changes. niodica tions, substitutions, additions. and omissions may be inade in tbe apparatus illustrated Without departing troni tbe spirit and scope ot tbe invention as set fortb by tbe appended claims. 4

Wbat il claire is:

t. ab teedwater beating system comprising Y a closed contact beater, ineans torsupplyng beating,- Hold to said beater, a surface beater arranged above tbe Contact beater. a vent connection between tbe ContactA and'surtacedensate troni tbe surface beater to the contact beater. A. l i

2. t toed-'water beating system comprisingr a closed contact beater, means tor supplying steam to said beater, a surface beater arranged aboye tbe contact beater, ,a continuously open vent connection between tbe contact and surface beaters, a continuously open atmospheric vent for tbe surface beater, means for passing Water successively tbrougb tbe surtace and contact beaters, and a connection tor draining condensate trono tbe suritace beater to the contact beater.

3. A teednater beatingl surface beater, andnieans tor priming Water Y tbinngb tbe surface and con?u` successively tact beaters.

5. A teedwater beatingn system comprisingr a contact beater, means lor supplying steain to one end tberoot, a surtaoe beater, a continuously open yent'connection between tbe otber end ot" tbe contact beater and tbe snrlace. beater lor pasaingrnoneondensable pasos and a portion ot tbeffsteana to tbe snrbien beater obere tbe beat tbereof is trans` lterred to tbe Water passing tbrougfb tbe surtace beater, tbe rent connection baving sucb 130 p a compris- ,v ing a closed contact beater, means lor supplying stearn to said beater, la surface beater l Seele depositing temperature,

ing a closed eonaet h emer, means communicating with one end of the .heater for sup plying steam thereto, a 'surface heater ranged above `the eontaet heater, a eonnu ously open vent connection" between the other end of the Contact heater and the sin face heater, and a continuously open atmospheric vent for the surface heater.

7. A 'feedhater heating system eomprising ai closed Contact heater, means communicating with one en'd ef the heater Jfor supplying steam thereto, 2L Surface heater nrrenged above the Contact heater, :i Continuously open vent connection between the other end of the Contact heater, en etmos pherie vent for the surfaee. heater, and e geez/mez;

drain -eemieetieii Jef'i-e'a. he contact heaters.

8. feed-water heaiiing system @emplee ing ri dosed eenuri header. means communicating wim one end of he heater for suppiyingg; eezxm Lhereh'y 'rr surface heniw zirrenged above the commet heater, :1 reminumisiy operi rent connection imm'eeu the o'her @mi of; che eenne heater :1111! 'he em.'- 'nee leuter for Supplying nonemirhnsnhie mees :md u portion of the Steam fm the em'- fzsee hez'i'ier, the vent eenueeiue' having auch czqmei'py :1S m aesure the 111:1 portion ex" (mdeiisntien :md heut'y transfer in the emr met heater" L rnmimwusiy hperl nm-imqiiwriv veut for the r "face heater, and n 11min wir neetien between the surfer@ um! renin-vt heaters.

In testimony whereof, l have herelmo Subscribed my nume this 5th dey et' lieb', i918.

shrine-e und wir,

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