US1884778A - Steam reheater - Google Patents

Description

Oct. 25, 1932. c. E. LUCKE ET AL STEAM REX-{EATER 5 Sheets-Sheet l Original Filed May 16, 1928 IN ITOR Wfb/M ATTORNEYJ Oct. 25, 1932. c. E. LUCKE ET AL 1,884,778

STEAM REHEATER Original Filed May 16, 1928 5 Sheets-Sheet 2 Fig-4 ATTORN EYS O 1932' c. E. LUCKE ET AL 1,884,778

STEAM REHEATER Original Filed May 16, 192B 5 Sheets-Sheet 3 Fig- 6 v l/ I vgn:

r jwfl V ATTORNEYS Oct. 25, 1932. c. E. LUCKE ET AL 1,834,778

STEAM REHEATER I Original Filed May 16, 1928 5 Sheets-Sheet 4 Oct. 25, 1932. c. E. LUCKE ET AL- 1,884,778

' STEAM REHEATER Original Filed May 16, 1928 5 Sheets-Sheet 5 Patented Oct- UNITED STATES PATENT OFFICE GH'AELEB E. L'L'U'CIE, 0! NEW YORK, 11'. Y AND J'QHIT E. mam, 0F nmon, MW JERSEY, ASSIGNOM TO THE IBABUDCK dz 'WILGQX UQHI'AWW, OI MYhfl'hllt, NW JERSEY, A COBYOBA'LION 0E NEW JEREMY v duplication Med Hewitt, tttfl, dettat he. Mttttt. muewed dune n, hm

This invention reletes to e deviee hy nhieh heet cen he ttansfen'ed trons n fluid ut high temperetnre to a fluid et e toner temperetuee Without reusing the the fluids to contect.

m The intention is espeoieltynsetnt in eonneetion With heating steem hetneen eteges ot n, tnthine by means of stentn e high phensut'e and temperature, hut is net restricted to this pertteutur nee,

The intention Witt he nndeuetood hour the description in conneetien with penyine drutvinee, tn Whieh eection threnegh en tttnettettte etn hoditnent ot the inventten; hhgo is m t eten g the hue Q it e't Fig den etong the hue l a t; t eeetien ehniter to the; it tent. y hro Y showing a, needi' than; Fig 5 in n udontg the tine e e ed a d .higfm h is out eeetton showing an d tnoditice tizen; Fig 5? ie eeetten pntthgr hrehen ewe-y ntone; the tine t t et n e eide 't'td'tt' thtenegh hheedet a t uhh pent he in eeetion showing tuhe net neetnent; hie"; t id eeetion through the tenet e't one ot the tnhes en en en earned eente; 'th in n WdhW ot e fitter:- ee were he need in eoneeetion with the reheeter end he etenn the tine ld td out hie tit; it't in hie. ht; hig. 12 is a vertlcet eectien throneh nnother modification" hie, t3 n. eectiion etong the line 13-13 of t ig, th; the. ht it e eection along the line l t-1t ot Fig, 192 end Fig, 15 is a section along the tine th-dti ot the t2.

In the drawings, reference character t indi eaten a 'verticall disposed eytindrioet eeeing thet ie rovid with an inlet Q at the tower end an an outlet 3 at the upper end through which steam to be heated passes. it hnder er filler member 4 with both ends c used is located at the center oi the casing 1 circular header 5 for high pressure steam is provided near the upper end of the casing 1 on the outside thereof,.and an inlet 6 from a source of high pressure steam leads to the header 5. The header 5 is connected ty one or more connections 7 to the lowest one of a 50 series of ring shaped headers 8 on the inside en end View taken atong the time itt-t't ot' ot the seeing, this header upon u hedge W et the ceeinu' t. t i w h entend ne Wendhr "horn the the ioneet lender h end nee eonnected hy eonneettene 1th tn the other heed ere h erreneed one there the other end de ereeeing peogteesitety in dintneter nnuletdty with epneet htoehe 'tt hetneen them to euppont eeeh one upon e tenet" one, wit tttdht rune e't veiticet tnhee ht nee suspended the heedets h end etttend tentdtndinettt' theongh the seeing; t he dtththll ettentee one etso e ene nho'ee the end in si dhn? te h r v ten den'nnnedttm eotteeter t ehtende,

the igeee 18 teeth he tenet heeezen 1d thehn'ped With one ha tenggee then the ethee eenneet the heed we to the eetteetet en the thehhe'e' the eesing 11. teeth "ehieh en enttet Ettt ted nWn u the tnediheetton ehenn s tt unit '2, the heedete te Whieh the nte een nected nee neede etreieght end the eneinn t in enpnerted he" hreehete hit upon eny eenn'en tent euppett end the intet heeder dd tor the hi h pressure steam ie eonneeted hy e ptn re ity of eennections 23 to etruieht parattet headers 524 that reet upon on ere eunpetted hy the upper end ot the eeetne; L ittene nit tuhes 2h ehtend from the heedere dd tenet tudinali e through the cesine t te corre- The etee Wtt the tubes are spaced closely in their major straight parts. In order to increase the velocit of en rheated steam flowing throng the insi e of the tubes 25, and before it begins to condense, they may be provided in their upper parts with cores 27 (Fig. 9) with pro ections 28 extending into recesses 29 in t e tubes to keep the cores 'in lace and provide narrow annular passages tween the cores and the inside walls of the tubes. These cores give a higher heat transfor rate for the upper superheat section of the tubes. 7

The arrangement of tubes 25 in the casing 1 enables the casing 1 to be substantially filled with the tubes 25 and also enables the headers 24. to be placed suflicient distances apart to permit the low pressure steam to pass freely between them.

In order to prevent the low pressure steam that passes through the casing 1 longitudinally of the tubes 25 from passing through the spaces near the inner wall of the casing 1 that are not filled with tubes, boxes 30, that may be made of sheet metal to fill these :fitsces, are provided with closed ends 31 for An extens on 32 (Fig. 6) is provided above the headers 24 having a removable cover 33 and the outlet 3 extends from the side of the extension 32.

In the modification shown in Figs. 12 to 15, a acket 36 surrounds the casing 1 and is supported by brackets 37 on any convenient support. A pair of steam inlets 38 is roed on opposite sides of the device an the inlet on one side is connected to alternate horizontalparallel headers 39 and the inlets 38 to the headers 39 closes a portion of the annular space on the other side are connected to the other headers 39. The connections from the inlets extend through the Lacket 36 and the headers 39 are supported by a rs 40 on cross beams 41 that rest upon anie bars 42 attached to the inside of the et 36. Tubes 43 which may be similar to those already described connect theheaders 39 to corresponding headers 44 at the bottom, and drain pipes 45 are connected to the headers 44. An inlet 47 for the steam to be heated is provided in the jacket 36 near the lower end thereof. A urved. late 48 ween the casing 1 and acket 36. Plates 49 extend lonfitudmafly o the casing 1 from the ends of t e plate 48'downwardly across the space I betwen the casing 1 and jacket 36. A; curved plate 50 at the lower ends of plates 49 closes the annular space between the casin 1 and packet 36, on theother side of the p ates 49 from the plate 48. An outlet 51 leads from the. lower side of the jacket36 opposite the mlot 47. A drain pipe 52 leads m the space above the plate 50 and a drain ipe 53 leads from the lower end of the jac et 36.

In operating the device as illustrated in assure Fig. 1, for example, steam to be heated, such as relatively low pressure steam from a stage of a turbine, enters through the inlet 2 and passes upwardly between the headers 13, thence along the outsides of the tubes 12, be-' tween the headers 11, and thence out through the outlet 3. High pressure steam entering I heating the steam that enters through the inlet 2 to the maximum possible temperature.

The operation of the other embodiments of the invention is similar to that just described. The embodiment illustrated in Figs. 12 to 15 difiers somewhat from the others in that'the steam to be heated which enters through the inlet 47 passes under the lower edge of the casing 1 between the headers 44, thence upwardly along the outside of the tubes 43 over the upper ,edge of the casing 1, thence downwardly the annular space between the casing 1 and jacket 36, vfinally passing out through the outlet 51 in its heated condition. The high pressure 'steam enters the headers 39 from the inlets 38 and then passes into the tubes .43 and lower headers 44 from which the condensate escapes through the outlets 45. Any moisture of steam that may condense in the annular space between he casing 1 and jacket 36 or in the lower end of the jacket 36 can bewithdrawn through the drain pipes 52 and 53.

We claim 1. A reheater for steam comprising a casing, a plurality of headers near each end of said casing, vertical tubes connecting said headers, and means for admitting steam to the headers at the up er end and withdrawing condensate from t e headers at the lower end, said headers having an outline similar to a cross section of the casing.

2. A reheater for steam comprising a casing a pluralityof headers near each end of sun casing, vertical tubes connecting said headers, means for admitting steam to the headers at the upper end and withdrawing condensate from the headers at the lower end, and means for passing steam at a lower pressure along the outside of said tubes, said headers having an outline similar to a crosssection of the casing.

3. A reheater for steam comprising a vcrtically disposed casing, a plurality of headers near each end of said casing, vertical tubes connecting said headers, and means for admitting steam to the headers at the upper end and withdrawing condensate from the headers at the lower end, said headers hav ing an outline similar to a crosssection of the casin 4. A refineater for steam comprising a casing a plurality of headers near each end of sai easing, vertical tubes connecting said headers, means for admitting steam to the headers at the upper end, and means for passing steam at a lower pressure along the outside of said tubes in a direction countercurrent to the direction of steam on the inside of said tubes, said headers having an outline similar to a cross-section of the easing,

' ii A reheater for steam comprising n cosing, upper headers and lower headers near opposite ends oft said casing, vertically disposed tuhes connecting said headers, means tar admitting superheated. steam to the up tit per headers at one end and Withdrawing con densate item the headers at the other end, means to increase the velocity of flow in the upper ends at said tuhes and tor Withdrawinp condensate from the lower headers, and means for passing steam to he-heated upwa dly over said tubes,

to it, ieheater tor steam comprising"v a casinpg, a plurality of circular headers near each and ot said casing, tnhes connecting said headers, and means tor admitting steam to headers in parallei at one end and withr condensate tram the headers at the other i .t a steam reheater, a casing, a set or upper headers, a set at lorver headers one oi oi headers heinpg snpported hy said vertically disposed tuhes connected to said headers and supported hp one at said a or headers, means to introduce a hot arid into the upper ends at said tnhes, and means to pass steam to he heated over the outside oil said tuhes.

ii. in a steam neheater, a casing, a set of upper headers, a set ot lower headers, one at" said sets of headers heing supported hp said casing verticaliy disposed tuhes connected to said headers and supported hy one at said sets of headers, means to introduce a hot fluid into the upper ends of said tubes, and means to pass steam to "be heated over the outside of said tubes and between said headers. i

9. A reheater for steam comprising a'casing a plurality of headers near each end of said casing, vertical substantially straight tubes connecting said headers, and means for admitting steam to the headers at the upper end and withdrawing condensate from the headers at the lower end, saidheaders having time an outline similar to a cross-section of the casing.

10. A reheater for steam comprisingm casing, headers near opposite ends of said casing, vertical tubes connecting said headers, means for admitting steam to the headers at the upper end and withdrawing condening,

sate from the headers at the lower end, and means for assing steam at a lower pressure along t e outside of said tubes and lon gitudinally thereof, and means comprising sheet metal parallel to said tubes to revent steam from short circuiting past sai tubes.

11. A reheater for steam comprising a casing, headers near opposite ends of said casing, vertical tubes connecting said headers, means for admitting steam to the headers at the upper end and Withdrawing condensate from the headers at the lower end, and means for passing steam at a lower pressure along the outside of said tubes, said tubes losing closely spaced with the headers at opposite ends at oiderent heights.

12. it. reheater for steam comprising a casing, a plurality of headers near each end of said casing, vertical: tuhes connecting said headers, means tor admitting steam to the headers at the upper end and withdrawing condensate "from the headers at the tower end, and means for passing steam a lower pressure along the outside oi said tithes, said tuhes losing closely spaced with theends oi said tubes hent to enter said headers, said headers having an outline similar to a crosssection of the casing,

13. it. reheater for steam comprising a casling, headers located at different heights near opposite ends oi said casing, verticaily dis posed tubes connecting said headers, means tor admitting steam into the upper ends of said tuhes and Withdrawing condensates trom the lower ends, and means for introducing into said casing steam to he heated.

l t. in a steam reheater, a verticaliy disposed casing, a phirality oi? headers in the upper portion oi said casing, a plurality of verticaily disposed tuhes having their upper ends connected to said headers, cores in the upper portions oi said tuhes, means to in troduce superheated steam into said headers, and means to contact said tuhes with steam to he treated 15. in a steam reheater, a casing, a set oi upper headers, a set of lower headers, vertically disposed tuhes connected to said headers and supported by one of said sets oi headers, means to support said last named set oi head; ere, means to introduce a hot fluid into the upper ends of said tubes, and means to pass steam to he heated over the outside ot" said tubes.

16. In a fluid heat exchange device, a casa set of separate upper headers, means to s ace said headers so that each. of said hea ore is laterally offset with relation to the adjacent header and is located at a diderent elevation, at set of lower headers, vertically disposed tubes connected to said headers and supported by one of said sets of headers, means to support said last named set of headers, means to introduce a heatin fluid into the upper ends of said tubes and means to 'passsteaintobe ing, a set of inlet headers said tubes.

17. In a fluid heat exchange deviee,a casiriiig, a set of upper headers each of which is O 56 t laterally with respect toan adjacent header and at adiflerent elevation, a set of lower headers ofiset horizontally and vertically with respect to each other, vertically disposed tubes connected to said headers and supported by one of said sets of headers, means to support said last named set of headers, means to introduce a hot fluid into the upper ends of said tubes, and means to pass steam to be heated over the outside of said tubes.

18. In a fluid heat exchange device a casing, a set of up r headers, a set of lower headers, vertical y disposed tubes connected to said headers and supported by one of said sets of headers, a filler member extending longitudinally of the casing between the tubes so as to prevent short circuiting by which a fluid passing through the casing would have a substantial part of its body failing to-contact with the tubes, means to support the headers of said last named set, means to introduce a hot fluid into the upper ends of said tubes, and means to pass steam to be heated over the outside of said tubes.

19. In a fluid heat exchange device, a casisposed within the casing at one end so that each of said headers is offset horizontally and vertically with respect to the ad'oining header, an upright distributing hea er, separate means esta lishing communication between each of said inlet headers and the distributing header, a set of lower outlet headers at the other end of the casing, vertically disposed tubes connected to said headers and supported by one of said sets of headers, means to support said last named set of headers, means to introduce a hot fluid into the distributing header, and means to pass steam to be heated over the outside of said tubes and through the casing.

CHARLES E. LUGKE. JOHN E. BLACK.

heated over the outside of

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