US1266344A - Condensate and air removing apparatus. - Google Patents

Description

R. SUCZEK.

CONDENSATE AND MR BEMOVING APPARATUS.

APPucknon man umso. me.

Patented May 14, 1918 SSHEElS-SHEET 2 UNITED sTATEs PATENT OFFICE.

ROBERT SUCZEK, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR T0 C. H. WHEELER MANUFACTURING 'COMPAN Y, OF PHILADELPHIA, PENNSYLVANIA, A CGRPOBATION OF PENNSYLVANIA.

CON DENSATE AND AIB REMOVING APPARATUS.

Specification of Letters Patent.

Patented May 14, 1918.

Application lcd December 80, 1916. Serial No. 139,985.

To all whom t ma concern Be it known that I, ROBERT SUOZEK, a subject of the Emperor of Austria-Hungary, residing in the city of Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented certain new and useful Improvements in Condensate and Air Removing Apparatus, of which the following is a specification.

My invention relates to apparatus for removing condensate and air from either a surface condenser or jet condenser, or kindred apparatus.

My'invention resides in apparatus of the character referred to in which the condensate umping means is preferably of the centrifugal type, in which may be employed an auxiliary impeller to preliminarily accelerate the condensate to improve the operation due to the low submergence, with means, such as ejector apparatus, for withdrawing air from the condenser to maintain a vacuor stages then delivering the air into t econdensate pump.

By such construction the double stage ap aratus is employed only in starting, and on y during such starting period is the steam consum tion for the ejector apparatus high, Therea teronly the first or early stages-are employed, consuming only relatively small amount of steam, the remainder of the work for raising the pressure of the air to atmospheric being performed by the condensate pump.

My invention resides inthe apparatus of the character hereinafter described and claimed.

For an illustration of some of the various forms In f invention may take, reference is to be haii to the accompanying drawings, in which:

Figure 1 is a vertical sectional View, some parts in elevation, through apparatus ernbodying my invention.

Fig. 2 is a sectional View, Home parts in elevation, of a modified forni of condensate pump and auxiliary structure.

Fig. 3 is a sectional view, some parts in elevation, ot' a modification of the structure shown in Fig. 2.

Fig. 4 is a vertical sectional view. some parts in elevation, of a modified arrangement in which the pumping mechanism is in two distinct units.

Fig. 4 is a cross sectional view through a art of Fig. 4.

n Fig. 1, (j represents a surface condenser for condensing steam or vapor, especially the exhaust steam from steam power plant or the like. The steam to he condensed enters through the opening 1, and the condensate is delivered through the opening 2 into the passage 3 which delivers to the suction of a centrlfugal pump P, the latter comprising the usual volute or dischar casing 4 and the runner or impeller I aving the venes V. The impeller I is secured upon and driven by the shaft 5 driven by any suitable means, as an electric motor or steam turbine. At the entrance to the suction side of the impeller I is provided an auxiliary im'peller or Huid moving device Il of any sultable type, as a screw propeller, attached at its periphery to and movable with the main limpeller I. A third impeller I2, secured to and rotatable with the main inpeller I and delivering between impellers I1 and I comprises a plurality of radlally outwardly' extending channels, or it may be a circumferentiall continuous impellcr, ofnumerousV charme s separated b the usual venes. The venes of the impel er` I, are indicated at V, and serre to connect the impcllcr l: to itnpcllc-r i. 'l`hc suvtiou oritirv ot' thc inipeller lu is thv longitudinally cxtcnding tube or pipe ti. whichlias a rotittl' hearing iii the stulling box .tl1ctuu\l'icouimunicating with thv chainher S.

(,omniunhating with thv vapor space ol' the condenser is the pipe t) through which is drawn air or nou-tfoudcnsahle gas into thc ejector F. ot' an)l suitable type. tti-which elastic inolirv fluid, as steunt. is dclit'rrcd. thc strani ciniltcd l'toin thc ejector nomlc eotraining the air 'lvlircrcd thrt n g'h thc pipe 9. thc mixture passing through thv pipiI l0, cont rolled hr \al\ c ll.to thv. 1eecond stage cjcctor lll which dclircrs thc air and strani through the member 12. Branching from thefpipc 1t) is a pipv 123, controlled h v valvi- L. coiiiinniiicatiunA with thc at'orcnwittioncd chamber 8.

The ejcetors 1*) and ll, may hv ot' an)v ot thc types disclosed in cti-pending application Serial Number 179.859. filed Juli' lt, itil?. though my invention is not limited tu' thv character ot ejectors employed.

The operation is as follows:

In startin the system, the valve 14 is lirst closed` and t ie valve 11 opened; the ejectors E and El are then Litarted by supplying them` with steam in the usual way, whvrcupon the air in withdrawn from within thc condenser C, and a suitable degree ot \acunin produced. The first ejector E `steps itp the pressure of the air o1" gus through a `uit ablev range, as for example, from 29 inches` of vacuum to, say, 24 inches of vacuum. while the second ejector E1 raises thc prvssure from, say, 24 inches of vacuum to or above atmospheric pressure 0r other suitable pressure. The desired vacuum in the condense;` C havingtlius been produced and the centrifugal ump having een brought up to speed, Va ve 14 is first opened and then valve 11 closed and the steam Isupply to the ejector E1 discontinued.

The steam condensed into water, or eondensate, passes through the opening 2 and tinds a level more or less approximate the level indicated by the line 15, and is accelerated by the im ellen I, and moved into the iinpeller I, which latter further accelerates the liquid Itend delivers it at higher pressure into the discharge casing 4, from which it is delivered to any suitable point or device. By'this coperation of the inipellers I1 and I an cect. is produced which is equiyaleiit to increasing the submergence of the main inipetler T, the submergence being well under stood to be the distance between the condensate level 15 and the axis or center of the innelter I. That is to Say, by employment 'if the preliminary or auxiliary impeller Il the iin'peller I is working to better advantage in thahthe liquid at the entry to the inipcllci' l has hccn prcliininarily accelerated by the iinpcllvr l,. a condition similar to that ohlainiu;r whvu thv sulnncrgcnee of the impvllcr l is substantially greater than that correspondinthr with thv distance between the t Aiitci' ot' thc iinpcllcr l and th.I condensate level 15.

`*iinultancously the vivi-'tor ll is removing air fr an thc condenser (i and delivering it with thc .steam employed in the ejector through the pipe t3 and vahc 14 and into thv casing .Q from which itl passes into thc suction (3 of: the third impcller l. which aceclcratcs the mixture hy centrifugal action and raises its prvsstre and delivers it hvtwvvn itnpvllcrs lI and i into tlc channels of thc uiaiii impellvr l between neighboring Hines V thvrcot'. thv condensato niorcd li \v thv iinpcllcr i ci'iti'ainiiu;A thc air and inorv ing it outwardly with thv condensate to th:` dischargicasing ft at any suitable pressure. a` atmospheric pres-ure or higher,

ln Fig. 2 thc condensatipinnp 1 again comprises thc main impcllvil l timing thc ranvs V. driwn by thv shalt Si` Within thel iinpvllcr l is disposed the auxiliar)A iinpvllcr l1 secured upon thcv shaft and timing thc raiics Vw the suction t3 of thc inipeller ll `eontnittnicating with tinchandler Il rt"ei\' ing the condensate from the condenser. not shown. The iuipellcr l is supported and scvurcd upon the inipcller l'` by means ot' the spaced rilis 1G rcscn'iljiling the spokes of a wheel.

Front thv ejector apparatus`r not shown. connection is made at 17 through the air and steam conducting tubes 1S to the annular clian'ibcrs 19 on opposite sides oii'the iniicllcr l. Pines` 2l). delivering,T preferably lirv steam i'roni ani' suitable, source. com niunicate with the annular chamber '21. 0n each side of thc impvller l. with .suitable t ircuntt'crvntial spacing. is provided a plurality of steam lnozzles 22 delivering across the chambers 1f) and through thev spaces hvtween the ribs 16 into the suction side of the inipeller.

The condensate is firstV accelerated hy the auxiliary inipcller Il and delivered t'hvrehy into the t'ree space between the peripheryef the iin teller I, and thc inncr edges of the Yanes il ot', the main iinpellvr I. und troni such space is inored and fui-thc accvlera-ttul and raised in pressure by the main impeller I and delivered into the discharge casingr ljoo ' through the rose masses of air and vapor alternating therein Y ture is eiiti'ained by the livered thereby into the discharge casing 4 at at least atmospheric pressure.

The ribs 16 may be so formed as to in effect constitute vanes which assist in the movement oi' the vapor and air delivered by the pipesl IS into the condensate.

In Fig. 3 double stage compressing a paratus. comprising the ejectoi's E and 1 in series. deliver air from the condenser through the tubes 1S, as described in connection with F ig. 2. Intliis case, however, the ribs lo are omitted and the vanes V2 and V ofthe inipellers Il and I respectively, are integral and continuous from the inner edge :23 to the oliter edge 24.

The operation is substantially the same as described in connection with Fig. 2, the inipeller Il preliminarily accelerating the condensate. which is then further accelerated and raised in pressure by the iinpeller I, the vapor and air mixture being delivered into the condensate while passing from one im-A peller to the other.

Iii Fig. l a plural iinpeller arrangement is again shown. In this case the condensate from the condenser is delivered through the passage 3 to the suction or intake of the preliminary impeller 1 which is driven by the shaft 5 and accelerates the condensate and simultaneously raises its pressure-fthe condensate being delivered from the discharge easing 4 through the pi e 25 to the suction of the second or main impeller I also driven by the shaft 5, which further accelerates the condensate and delivers it at higher pressure to the disharge casing 4. Disposed within the impeller I is the stationary rose or plural channel device 26, shown in cross section in Fig. 4, and comprising the channels27, of any suitable number. With the channels 27 of the members 26 communicates the passage or ipe 28 in communication with the ejector The ejector E, single or multipleistage, withdraws air from the condenser. whose condensate is delivered to the passage 3. and the iiiixturi of air and steam from the ejector E isA delivered through the pipe 26 into the iinpeller canals,

with masses of condensate and delivered tlierebi7 at higher pressure. at least atmospheric pressure, into the casing 4. The condensate delivered by the pipe 25 to the impeller I icaches the intake ofthe iinpeller I through `the spaces'29, Fig. i", between the channel `it'ornliing members 27.

Pursuant to requirement for division, Some of the subject matter herein disclosed is claimed in my divisional application Serial Number 210,054,1iled January 7, 1918. Cei'- tain of the ysnb'ect matter herein disclosed and claimed is disclosed in my copending apcondensate 'and de:A

.plications Serial Number 167,061, filed May 7, 1917, and Serial Number 207,744, filed December 18, 1917.

What I claim is:

1. The combination with a condenser, of punipin means for removing condensate comprising a submerged auxiliary impeller, a main inipeller, said auxiliary impeller delivering condensate under pressure in dense liquid form to said main.impe1ler, and means delivering air from said condenser into the condensate between the auxiliary and main impellers.

The combination with a condenser, of pumping means for removing condensate comprising submerged auxiliary and main impellers, and means for delivering air from the condenser to the condensate between the auxiliary and main impellers.

3. The combination with a condenser, of pumping means for removing condensate comprising a submerged auxiliary impeller, a main impeller, said auxiliary impeller delivel-ing condensate under pressure in dense liquid form to said main impeller, an ejector for withdrawing air from said con denser, and means for conducting the air removed by said ejectorsinto said condensate between the auxiliary and main impellers.

1. The combination with a condenser, of pumping means for removing condensate comprising submerged auxiliary and main i'mpellers, means for extracting air from said condenser, and means for conducting the extracted air into said condensate between said auxiliary and main inipellers.

5. The combination with a condenser. of

a condensate-reinoving pump, plural stage ejector apparatus for withdrawing air from said condenser and raising it in pressure, means for discontinuing operation of a later stage of said ejector apparatusal and means for thereafter conducting the air removed from Vsaid condenser into said condensate pump. f.

6. The combination with a condenser, of a centrifugal condensate-removing pum plural stage ejector apparatus for wit 1- drawing air from said condenser and raising it in pressure. means for discontinuing operation of a later stage of said ejector apparatus,`and means for tl'iereafter couducting the air removed from said condenser iiit'o an impeller of said condensate pump.

i. The combination with a condenser, of

pumping means for removing condensate after conducting tie air` removed from the.

condenser in toithe condensate between said auxiliary and main impellers.

ion

8. The combination with a condenser, of a condensate-removing pump comprising n submerged auxiliary impeller deliveringto a main ilpcller, a third impeller delivering into said main impeller, and an air connection from said condenser into the suction of said third im eller.

9. The com ination with. a condenser, of a condensate-removin pump comprising a submerged auxiliary lmpeller delivering to a main linpeller, a third impeller delivering into said `inain impeller beyond said auxiliar impeller, and means for extracting air rom said condenser delivering into said third impeller.

10. The combination with a condenser, of a condensate-removing pump comprising a submerged auxiliary impeller delivering to a main impeller, ,a third impeller delivering into said ,main impeller beyond said auxiliary impeller, and an ejector removing 'air from said condenser and delivering the same into said third impeller.

ll. The combination with :i condenser, of a centrifugal condensate-removing pump havin an impeller, another impeller delivering into said impeller, and an air connection from said condenser into the suction of said other impeller.

12. The combination with a condenser, of a centrifugal condensate-removing pump having an impeller, another impeller delivering into said impeller, and means for extracting air from' said condenser delivering into the suction of said other impeller.

13. The combination with a condenser, of a centrifugal condensate-removing pump havingan impeller, a condensate'connection from said condenser to said impeller, another impellerr whose suction inlet extends through and to the exterior of said condensate connection, and an air connection from said condenser to the suction inlet of said other impeller,

14. The combination with a condenser, of a centrifugal condensate-removing pump having an impeller, a condensate connection from said condenser to said impeller, another impeller'whose suction inlet extends through andto the exterior of said condensate connection, and means for extractin air from said condenser and deliverin it into the suction inlet of said other impe ler.

1,5. The combination with a condenser, 'of a centrifugal condensate-removing pump, a condensate connection from said condenser to saidV pump a tubular member rotating with the impeller of said pump and extending to the exteriorof said condensate connection, a chamber with which said tubular Q centrifugal air und water removing apparamember communicates, and an air connection from-Said condenser to said chamber.

16. The combination with a condenser, of

a centrifugal condensate-removing pump, a

condensate connection from said condenser to said pump, a tubular member rotating with the impeller of said pump and extending to the exterior of said condensate lconnection, a chamber with which said tubular member communicates, and. means ior ex tractng air from said condenser and delirering it into said chamber.

17. The combination with a condenser, of an impeller, a pump casing inclosing said impeller, a tubular suction inict for said impeller extending to the exterior of said casing, a chamber exterior to said pump casing with which said tubular extension comnmnL cates, and means for conducting air sepa4 rately from the condensate from said rondenser to said chamber.

1S. The combination with :i condenser, of a centrifugal condensatenemoi'ing pump. a tubular member rotating with (he impellor structure of said pump and'cxiending lo the exterior of said pump` a clmmher with which Said tubular member comnmnirates, u d means for conducting air separately "rom the condensate from said condenser to said chamber, the inner end of said tubular n mber communicating with said impcllrr structure.

19. The combination with a condense", ot' a centrifugal condensate removing pump, a connection for delivering condensate from said condenser to said pump a tubular member rotatable with the impeller structure of said pump and extending to the exterior thereof, a chamber with which said tubular member communicates, an air connection from Said condenser to said chamber separate from said first named connection.` and an ejector for Aremoving air from said condenser and deliverin it through said air connection into said c amber.

20. Centrifugal water and air removing apparatus comprising impellers having independent suctions, means for delivering air to the suction of one of said impcllers, means for delivering water to the suction of another of Said impellers, said one impeller increasing the ressure of the air and deliv ering it into said other impeller. l

21. Centrifugal water and air removing )ump structure comprising a pump casing, impellers in said casin having a common discharge, separate suctions for said impellers. means for conducting air to the suction of one of said impellers, and means t'or con ducting water to the suction of :mother of said impellers, said one of said im pellers dclivering the air acted upon thereby into said other impeller.

22. The, combination with a condenser, ot

tus comprising impellcrs having independent suctions, means for connecting thcsuttlon of one of said imnellers with Hw` nir space of seid condenser, means for conducting e611?, pressure into the suction of one of seid inldnsate from said condenser to the suction of said other inpeiler, said one mpeller increasing the pressure of the air and de1iverin it int/o the water acted upon by said otf er impeller.

23. The combination with a condenser, of centrifugal air and water removing apparw tus comprising impellers having independent suotions, means for removing air from said condenser und delivering it at higher pe11ers,. means for conducting condensate from Said condenser to the suotlon of another of said impellers, ,said one lnpeller 16 increasing the pressure of the iir and delivering it into said other impeller.

In testimony whereof I have hereunto affixed my signature this 28th dey of December, 1916.

ROBERT SUCZEK.

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