US1592845A - Surface condenser - Google Patents

Description

J. GOODWILLIE July 20, 1925,

SURFACE CONDENSER Filed Dec. 1.. 1925 mmvron J E4 00 willie.

1 1/5 AT ORNEY TE STATES PATENT orrlce.

some n. ooonwmm, or 32.00

contain, or

KLYN, NEW YORK, ASSIGNOR T INGERSdLL-RAND mass! cm, NEW ansnr, a conronarron or NEW masnr.

summon convex sun.

Application filed December 1, 1925. Serial No. 72,543.

.This invention relates to. surface condensers of the typ e provided with water cooled condensing tubes with which steam is adapted to contact;

In surface condensers ofthis type water is forced through the tubes usually rom 0118 end of the condenser and discharged at the opposite end. The tubes. therefore, in con- (lensing steam transfer the heat to .the water causing a. progressive rising temperature along the length of the tubes which results in greater specific steam condensing ca acit at one end of the tubes than at the ot er. The tubes are spaced apart at the least practioal distance to permit the steam to pass "through to other tubes more remote from the steam inlet. It is to space the tubes at ends rather than in which incloses the vt usually more practical similar intervals at both ake the shell or casing,

ubes, smaller at the discharge end of the tubes than at the inlet end. Since the cooler ends of the tubes have greater warmer ends, 2

condensing capacity than the it therefore follows in the usual condenser that steam passing down about the tubes will penetrate to a greater depth at the warmer end than at the cooler end before the steam is doused. In this manner the lower tn 1 "so not utilized to their full steam condensing capacity in the cold which results in a lo It is an object of completely cones are er end of the condenser ss of elliciency. this invention to utilize the full steam condensing capacity of all of the tubes and todistribute the steam through c length" of the condenser in accordance with the steam condensing capacity in the VllIlOllS sections. this embodiment of This is accomplished in the invention by leavmg a space or steam lane extending downwardly along the center of the condenser and longitudinally of the condenser and by providing bafiles in the steam lane which deflect steam toward the cooler end of the condenser.

Other objects and advantages will be in part obvious and in part pointed out here- -1nafter.

. Figure l is a longitudinal vertical section of the condenser 00' nstructed in accordance drawn by a suitable vacuum pump (not.

shown) A plurality of tubes D are adapted to conduct the water supplied from the supply'head E suitably attached to the casing A at one end to a discharge head F at the opposite end of the casing A. The tubes are suitably sealed in the tube sheets G to prevent leakage of the cooling water into the casing A.

The cooling tubes D are adapted to condense steam introduced intothe interior of the casing A through the inlet B and to this end are arraiwed transverse to the path of the steam fl ow and interposed between the steam inlet B and the outlet C. Near the middle of the casing A the tubes D 'are spaced apart to form a steam lane H into which steam is adapted to flow to reach the lower banks of tubes D. at either side of the steam placed very closely to when steam is adapte The tubes D the tubes to reach the lower banks. Steam is adapted to enter the steam lane H and to spread laterally into the nest of tubes D to be condensed thereby. The steam lane H preferably'extends the entire length of the tubes D,and is arranged to connect with all of the tubes on all levels within the casing v A. i

The tendency-of the steam is to pass di- ,rect-ly to the outlet C. It will be noted that asthe water passes through the tubes D from the su ply head E toward the discharge head its temperature rises and therefore its heat absorbing capacity is low cred. The temperature of the tubes D rises correspondingly and as a result the specific condensing capacity of the tubes also' decreases. The tendency of the steam therefore at the warmer ends of the tubes D is to penetrate more deeply at the warmer endof the condenser than at the cooler end.

That is, if a suitable vacuum is maintained at the outlet C to, draw steam to the lower- Inost bank of tubes D at the warmer end of the condenser, steam passing by the-tubes D at the cooler end would not penetrate as deeply since it would be condensed before reaching the lowermost bank of'tubes. This would result ina loss of condensing capaeity in thecondenser since the cooler -portions Olfiihfitubes would remain unexposed to steam. In order to utilize the full steam ca acity of the condenser means s provi ed by this-invention to'distrib iite the steam-to the coolingtubes in proportion to their steam condensing capacityd To this end baffles J, K, Lv and 0 areuprovided Y which may be horizontally placed in the steam laneH and suitably supported on w brackets- P attached ,to-the tubesheets G and by means of spacing bolts Q between the baflles' Each of the bafiles J,-K, L and O'extends from the tube sheets-G5 at the warmer end toward the cooler end; of the condenser; The uppermost baffle J is shorter than the lower balliesxK, Land O, the upper bafiles being progressively shorter to provide "less obstruction at the cooler jend of the condenser to the introduction ot steam at lower levels than at the warmer end. The

lowest baflle 0 extends the. full lengthof the tubes D and is adapted ,to spreadlthe steam out laterally about [the lower tubes and to prevent steam fromgpassing throught-he relatively few-tubes below the bafileato the steam outlet. w v 3 Thus by the above described construction hereinbefore referYed to. k

I claim: 1. A surface condenser comprising a case ing, water conducting coolingfltubcs within are accomplished among others the objects saidcasing having greaterspecific steam condenslng capacity towand oifeend of the leasing than at thefotheg said tubes being spaeed apartto provide a steam lane,, and

means in said steam laneto distributo -the steam within -the -casing and'to theeoolingthe steam inlet and the outlet, said tubes being spaced to provides steam lane extend ing irom the steam inlet toward the outlet, and" means in said steam lane to distribute the steam within the casing and to the cooling tubes in proportion to their steam con-y densing capaci y. 7

3. A surface'condenser comprising a we ing having a steam inletandan outlet for condensate and uncondensible gases, a p111 x rality of Water conducting cooling tubes exl tending across the path of steam flow and interposed between the'stealn inlet and-out? vvlet, said tubes having varying specific steam condensing capacities throughout their length and spaced apart to form a steam lane from thesteam inlet toward the outlet, and means in said lane to distribute the" steam within the casing and to the cooling tubes in proportion to their specific steam condensing capacity.

A surtacecondenser comprising a casing having a steam inlet and van outlet for condensate and uncondensible gases, a plurality of Water conducting cooling tubsextending across the path of steam fiow and interposed between the steam inlet and the outlet, said tubes having specific steam condensing capacities throughout their length andspaced apart to form a steam-lane from I -:the steam inlet toward the outlet, and means 35 --,in said. lane to distribute the steam Within the' casing and to the cooling tubes inproportion to their specific steam condensing --eapacity, including bafies extending from the warmer portions of said tubes toward 99 the cooler portions.

In testimony whereof I have signed this specification.

- Jenn n. eoonwniiirs,

Images