US1597695A - Surface condenser - Google Patents

Description

www5

Aug. 331 @2% G. W. S/THQFF SURFACE CONDENSER Filed Dec. 13. 1922 remita Aussi, 192s. K i i ll,59.1,'-,6*95k` UNIT-ap STATES PATENT. o I-ricn Groen w; saa'rnorr, or sourir QBANGE'QNaw-mnsnr, assioma 'ro Donner? Bremen' comm,- o'r Naw Yoan, N. Y., Acoarozaarion or DELAWARE,

'simenon ooNnnNsEB. Application algemeenheiis, 1922. v serial no. 606,560. I This invention relates to a'. surface con-` ing specification andvclaims and illustrateddenser, and, more particularly, toppparatus lin the accompanying drawings,'in`which: `or preventing the leakage of vcooling fluid Flg. 1 is a vertical sectional elevation of Y from the cooling fluid compartments a condenser'embodying a preferred forni of t through the joints of the condenser appalthe invention, and,v c p ratus into the condensate or pure liquid com- Figa-2 isa detail sectional view of a por- 69 partment. tlon pf the condenser showing a manneriof In condensers' of thetype inwhich the packing the' joints about-the coolin tubes. cooling Water flows through cooling tubes In the present .invention the lea. age of extending through `a vapor space between cooling wateriixito t e vapor space is' p' partitions separating the -vapor space from posedsand. prevented by forcing a disti `ed 65 the end Water compartments, it is diiiieult, water or a'water which is suiiciently pure,so if not impossible, to maintain the )ointe as notto contaminate the condensate-as, or between the ends of the tubesand the partiexample, aportion of the condensate'.f liav 16 tions absolutely iuidv tight. As a result, against the joints through which le age there is a tendency for a portioirgof the in aycccuryin a direction opposed to that of 170 `cooiing liquid to leak from the cooling fluid said leaka e. This :is preferably-lgccomjchambers through the joints to the vapor plished mterposin'gan intermediate,' res@ chamber and thus becomemixedvith the surel fluid chamber' between tliegy artltion- 20 condensate formed in the vapor chamber. 'through'which leakagegnay. take .p agie a" d As condensers of this type are usuall e1n' `the vaporspaee,and till ing tlsintefrmdi t@A 7ti 4 ployed when the cooling iuid not o suichamber with condensate fro 4'ilie-ilvapor, cient purity or softness for usein boilers chamber under sufficient pres urkejjz'o", or. other a paratus to which the. condensate vent the leakage of cooling fluid-'through y is'returne, or for drinking purposes5 the Joints .1n-the partition. Theinternediate leakage of the cooling fluid into the vapor Chamber is preferably formed by a artition. 8.0 chamber tends to cause the continued con slightly spaced from the Vapor sidraof .the tamination of the condensate and the acend partitions and through which the coolv cumulation of saline products or impurities lng tubes extend. The pr" sure ofthe 1i uidf 3o in the boilers' or other'A apparatus to whichV `in this 'intermediate cham er is, mainta the condensate is applied 'and thus inter- -somewhatabove that'of the tluidfinitheicol- 5 5 fer-es with the operation of the apparatus. ing liquid compartment, in order :.t ?posif An object of -the resent invention is to tlvely insure against vthe leakage of any cool,

provide apparatus or condensiii vapors ing Huid into the vapor compartmentfglf a;4

in which the leakage ofcooling flu' into the small portion of the fluid leaks from the vaporsystem is positively prevented. intermediate, pressure chamber-into the cool- 90 A further object ofthe invention. is to ing fluid compartment, qit'will be mixed with provide apparatus, Vfor condensing vaporsthe coollngwater and if aportion' leaks into under reduced pressure in whichjjthe ,tendthe v'apor compartment it will com inglff';

40 ency for cooling fluid to leak into the vapors1 with the c'ondensate.f 'lhequantity o ,liquidi is opposed by a Huid under pressure interthusrlost rom .the-pressure chamberisre-'E '95 posed between the cooling fluid compartplaced byfresli condensate or other pure? mentl and the vapors. liquid and the quantity thus lost isreduced; Further objects and features of the in venl to a minimum by'y suitable packings about tion are to provide a surface condenser in the tubes in the artitions.

which a pressure chamber is interposed be- Referring to t e accompanyin df wings, m0' tween the partitionseparating the vapor the-.i'iiventioii' isfillustrated as em od-edn a compartment from the cooling comparttype of vcondenser in which coolingvater is ment; .to provide an improved packing about supplied through an inletL l0 to t Le IWQF the tubes passing through said pressure f portion of a supplyand distributin chain-r` chamber; and to provide a simple and eEecber 12 from ,Whichiti is distribut amongiloff tive construction for said pressure chamber.; 'a number of tubes 14 'extending from a para."4

These and other objectsand Ifeatures are' tition `16 foimingone'- `Wall of theI chamberl` described andset forth in the accompanyf1.2 through a vapor compartment 18, The

CII

partition 22 in whic .the chamber through an outlet-pipe 24. .The vapor come4 compartment.

partment 18 is formed vby a cylindricalshell 26 having an. inlet 28 in itsupper Wall through which the'vapor'is admitted to the The condensate formed in the vapor compartment flows-into l'a well 30 in the bottom wall of the compartment and is withdrawn through a drawoff pipe 32 by means of a .pump 33 and forced through a delivery line 34.

As the vapor compartment is normally maintained under reduced pressure and the liquid'is supplied to the cooling liquid co'mv 'the tube. A packing ring 66 is placed in partments at atmospheric or .above atmospheric pressure, there is a tendency for liquid `to leak from the chambers 12 and 20 Vabout the ends of the tubes- 14'into the vapor com artment 18 and thus contaminate thel con ensate formed in :the vapor' compartment. vTo-prevent this leakage a portion of the condensate is diverted from the delivery pipe i4-through a branch pipe 36 and pressure regulating valve 38 and supplied through branch p1 es 40 and 42 to 1ntermediate orpressure c embers 44 and 46 formed between the partitions 1 6 and .22

y is maintained substantially respectively andthe vapor chamber 18 by means of artitions 48 and 50 spaced a short distance rom the partitions 16 and 22 respectively. The tubes 14 extend througlL alignedopenings 52 and 54"in the partitions' 16 and 22, and 48 and 50,- the joints about the tubes being rendered as tight as practicable by 'means of suitable packing or other means.

To insure against any seepage: or leakage of fluid through the partitions into the condensate, the ressure of the lquid'supplied to the cham ers 4 4 andj46 is maintained slightl above that of the chambers`12 and 20.l he pressure in chambers 44"and 46 constant by the regulating valve4 38 s o as to be slightly higher than the pressure in chambers 12 and '20, regardless of the variations in pressure in the line 34'.' 'A slight leakage ofthe condensate liquid'into thecooling li uid 'may 'take' place but by a-suitable regu ation of the relative pressures on opposite sides of the artitions, this leakage may be made sma Some of the condensate liquid may also lealiifrpm the chambers 44 and 46 into 1s To enable vthe tubes to'b'e easlly mounted in al1 of the partitions andto. form suiciently tight joints fto minimize the leakage To this end the openings 52 in the partitions 48 and 50 are countersunk and threaded as at 56 and a packing ring 58' is laced in the recess formed between theen arged portion and the cuter surface of the tube 14. This packing ring is then compressed by' means of a threaded ,ring or s anner nut 60 forming a in the enlargementA 56, there y tight jointabout the tube.

. The openings 54 in the partitions 16 and 22 arev larger than the outer circumference of the tubes 14 to permit the insertion of a wrench for operating the nut 60. Each opening '54 is providedA with an inwardly projecting flange 62 and a flanged ring 64 is positioned in the openingrto rest against the flange 62 and close the opening around tween the partitions 16 and 48 and 22 and 50 respectively, and bolting or otherwise fastening these rings with the partitions be.- tween suitable flanges projecting outwardly from the shell 26 and the walls of the chambers 12 and 20. A very simple construction is thus provided and one which permits the apparatus to be readily taken apart when necessary. This construction also permits existing condensers to be' readily adapted to utilize the present invention with a small change in construction.

Through the above invention the leakage of cooling fluid into the condensate -chamber or compartment may 'be positively prevented without interfering with the degree of vacuum maintained in the vapor chamber. The'invention also requires but very little additional apparatus or changes in construction over the ordinary type of condenser and but very little attention in op` eration.

VHavin described the invention, what I claim an desire to secure by Letters Patent .1. A condenser apparatus `which comprises, 'a' 'vapor compartment, cooling Huid rcompartmentsat opposite ends of said vapor compartment, cooling tubes extending through said vapor compartment from one cooling fluid compartment to the other, an intermediate chamber between each cooling `fluid, compartment and the vapor compartment, and means for .withdrawing condensate from said vapor compartment and forcing a portion of said condensate to said intermediate chambers at `pressure. p l .A

2, A condenser apparatus which comprises, a vapor compartment, a cooling Huid compartment at one end pertinent, cooling uid compartment into andclosed to a denite' regulated of said vapor comy cooling tubes extending from said said vapo1con1partment an intermediate dischar e from said pump to said intermediate c xamber and a pressure regulating valve in said branch pipe.

In testimony whereof I aix my signature.

."GEoRGE W. SAATHOFF.

chamber between said vapor compartment

Images