US1790834A - Surface condenser - Google Patents

Description

Feb. 3, 1931. c. A. PARSONS ET AL 1,790,834

SURFACE CONDENSER Filed June 22, 1929 6 Sheets-Sheet l 1NVENT$Z ML mtg/K auwk M THEIR ATTORNEYS 9 c. A PARSONS ET AL 1,790,834

SURFACE CONDENSER Filed June 22, 1929 6 Sheets-Sheet 2 INVENTORS @Aum M @406 BY THEIR ATTORNEYS Feb. 3, 1931. c. A. PARSONS ET AL 1,790,834

, summer: commnsrzn Filed June 22, 1929 e Sheets-Sheet s INVENTORS m. Wm WM M $1 V BY THEIR ATTORNEYS fix g 4 m Feb. 3, 1931. c. A. PARSONS ET AL 1,790,834

' SURFACE CONDENSER Filed June 22. 1929 e Sheets-Sheet 4 INVENTOQJ MW 5M BY THEIR ATTORNEYS 1931- c. A. PARSONS ET AL 1,790,834

SURFACE CONDENSER Filed June 22, 1929 6 Sheets-Sheet 5 v INVENT 3s Q? flu! 4240M jrMm 4 @MM w a BY THEIR ATTORNEYS Feb. 3, 1931. c. A. PARSONS ET AL 1,790,834

SURFACE CONDENSER Filed June 22, 1929 6 Sheets-Sheet 6 BY THEIR ATTOR NEYS INVENTO v The main object ofithe. presentinvention i i of Figure 2; 1

enemies nnennuonjrnnsons iiivn s tsemos 1 hn xnn ss, {or rinwoAs' rnn on-rm;

' n qenenn; SAIDABKLESSfASSIiGNQR TO'ZSAID'IAFSONTSi sunrhcn ooivnnnsna 1 's Application iueqaun 2 2, 1929; Seria1' u 372,963, and inGr eat Britainrirune 22, 19,28 i

is to provide an improved form o fsurface condenseriof comparatively simple construc tion andhigh'; efiiciency,

.. With-such an ob'ect, the p in whichthe-steam enters at th6;f0P and is g de t it e bo tom; th gh b ba fled duct or through laterally-disposed bafi'iedducts to *ascend through'fthe I 'nests of. ub by y 'a radu y dim n sh n area;

; Ramsesiheascompaymgra s matic drawings: f

Figure 1 1s acrossrsectlon through one form'of the condenser Figure 2-is a corresponding longitudinal section taken on he line ffiif iirsi and V Figure 3 an elevation of the condenser and turbine exhausting thereinto; while finally Figures 4:, 5 and 6 are corresponding views of a modified form of condenser applied'to a double-flow turbine, H I I When not otherwise mentioned, the same j reference symbols areused in the different 1 from a turbine, 3, by way of a duct, hand figures to denote corresponding parts. I

- In carrying the invention into eflect ac-j cording to one form, (see Figures 1,2 and 3) the condenser, 2, receives the exhaust,

takes the form of a cylinder ofoval crosssection with its major axis'horizontal; the

j casing or'shell ispreferably constructed of steel plates with the necessary stifieners and so forth while the condenser tubes are disposed 'ina horizontal position in two main groups, 5a, 5?), one on each side of the .con-

denser, each group being connected at each end to separate water boxes, (see for example, 6, 7, Figure 2) provided with the ap-; propriate inlet and outlet circulating water connections, 6a, 6b, on one side and 8a, 8?),

on the other side (Figure 3) and doors, 60,80.

The twomain groupsof tubes, 56;,56,

larevspacedapart (see Figure 1) to leave a resent; invention conslsts in a condenser wlth nests of-;tubes,-

taken on the line o R fillg he ct en't e; t e i file iy y the top v to. the bo ttom'v part of the 'tsihell. Longitudinal bafiles, 111;,116, v defining. the transverse dimensions of the uppenpart of i the centrali duct'are arranged one on: each side. of the', vertical centre; line or the icons denser, the upper}partslof'these"baflies'be; 1 ing ag distanc'e apart substantially "corre'- spending to the transversefdirnen'sions' Woof"? i thesteamainlet, 10, the 'baflies approach, 1

each other towards'the centre ofthejfcondenser. ,(see Figure; 1.) The lowerlpart of each nestf of tubes; is lor mayflbe curved away' from' the icentraljduct f as shown" atfj 12a, 12b, to'allow freev accessflofjthe'steani} togthe. lower tubes. '1 As theifl-steami enters, therefore, it spreads out longitudinally to of tHePcohdenSer I through any usual outlet,

.flhe condenser as L .y ol supp r' su t bl [res dicatedlatlfia', 165.

The b'aifi'es, 1122, 11b, hich" forrmthe-s es if hiireierel y silpp'olts" inj of the-duct, 9, through'which the staiiiiiows lew war .betvee rthe. nest e i i s se etc rotectj the tubes from erosion such i'nj condensersinjwhi ch the top rows 1 e exposed tofthe direct action of vn turbine blading'at high; I

f The? condensate falling; through the tube nests cowards 'thej;w ater extraction brancm 1 has, to pass-through-the steam "stream so 7 that the condenser works on What is common;

ly' known as the regenerativelprinciple. 1 Further; as the: twoinests "of tubes, 521,156,

" one on eachside, :arieprOvided With-separate doors fic, s80, lpreferably of approximately j semi-circulars shape to; correspondwith thea cross seQtio'n ofthe condensencleaning of the it condenser tubes may be carried out' without,

shutting down the whole plant by shutting off the circulating water from the half of the condenser to be cleaned and opening or removing the door of the corresponding water box to expose the tubes. During this process condensation continues in-the other half of the condenser. 1

According to a modified form of the invention, .(see Figures 1, 5 and 6) the same main features are emb-odied'in the condenser butin a modified manner, the two nests of tubes, 5a, 5?), being placed closer together while the single central duct, 9, is replaced by two ducts, 9a, 9?), arrangedone on each side of the con: denser, whichthey envelop on the sides and bottom, theupper' part of each such duet being proyided witha steam 'inlet,10a',10b, respectively. I I I I I I males are arranged between the tubes and the steam inlets, 10a,"10b, anain the present modification take "the form- .or iongimamn partitions, 15a',,15b, extending outwardly and the top of the condenser downwardly from I on each side to about its mid depth. (See Figem I V I I As ffore, air is withdrawn at the top ofthe condenser while one or more fittings for the pumpsuetion'sareprovided at the bottom. I

Such amodified form of the invention is particularly'applicable to a double-flow turbine, 17,-(see'Figure 5 with exhaust ducts,

tin-4 b, one at eacliend, the two laterally-dis posed. condenser inlets, 10a, 105,; above described being spaced apart to correspond with the turbine outlets, 4a, 4b, 1 I I Alternatiyely,in any formof ftheinyention a section of the tube-nestsimay be disposed in the steam inlet ducts 9, 9

tubesandis partially condensed thereon. The constructions described are appl cable to acondenserwith any number of water "Varid' meaificaaqas as be made in th details of construction of the condensers described without exceeding the scope ,of the invention.

w a m f. '1. A surface condenser comprisingln com= bination, a casinghaving an inlet through the" ing between said free space and said tubes, so

that the medium to be condensedcsweeps round the entire" lower edge of saidbafile means '"and attacks said tubes along their when length.

I 1, 9b, stamina? downward steam ,stream scrubs cover these;

2. condenser as claimed in claim 1, in which said tubes are arranged in a plurality of symmetrical'nests with bafiiingmeans opera tively. disposed in relation to each of said nes s.

3. A: condenser as claimed in' claim 1,,havlng'a plurality of nests'of tubes within said casing with said free space between the upper parts thereof, said baffling means being dis-. posed between said free space and said nests of tubes on the two sides thereof. 4.- A c ondenser as claimed in claim 1, hav;

'ing a plurality of nests of tubes within said casingwith said free space betweenthe upper parts thereof, said baffling means being disposed between said free space and said nests of tubes on-the two sides thereof and mutually convergingin the downwarddirection.

5. condenser as claimed in claim 1, in which sai'd tubes, are arranged centrally in said casing in a plurality .of juxtaposed nests with -thebafiiingmeans operativelydisposed between said nests and'the wall of said'casing.

16:. condenser as claimed in claim 1, in' wh ch s aid*tubes arearranged centrally in sald'casing in a'plurality of-jux'taposed nests with the bafliing means operatively disposed between said nests and the wallof' said casing and forming therewith steam ducts Ico'ntract' ing in a downward direction. T

"In testimony whereof '9 names to this specification.

CHARLES ALGERNON PARSONS.

have signed our -FREDERIOK ARKL'ESS.

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