Патент USA US2406399код для вставки
Aug. 27,1946. E. w. POTTMEYER ' - 2,406,399‘ COOLING APPARATUS .FOR FURNACE PORTS Filed May 2,‘ 1945 2 Sheets-Sheet l 25 /24 /25 E355 INVENTOR fo'waro’?lpoffmeyer' -. BY ‘ . ATTORNEYS Aug. 27, 1946‘. ' E_ w, POTTMEYER 4 ‘ 2,406,399 ' COOLING APPARATUS. FOR FURNACE PORTS Filled May 2; 1945 2 Sheets-Sheet 2 INVENTOR _ ' fo’waro’lllpoffmeyer' BY . MXW ATTORNEYS ‘ Patented Aug. 27! 1946 2,406,399‘ UNITED‘ STATES PATENT _ ‘ oFFics COOLING APPARATUS FOR FURNACE PORTS Edward W. Pottmeyer, Pittsburgh, Pa., assignor to Blaw-Knox Company,‘ Pittsburgh, Pa., a cor poration of New Jersey Application May 2, 1945, Serial Nq.'5e1,619~ 9 Claims. (01. 1.22-6.55‘ 1 Figure 8 is a partial elevation of the discharge This invention relates to ‘a furnace port cooler and, in particular, to a cooler for the port of a ‘regenerative furnace such as the conventional end of a ?ushing pipe; and - Figure 9 is an end view thereof. open-hearth furnace. It is an object of my invention to provide a port " cooler characterized by improved circulation of cooling water therethrough and the elimination of clogging resulting from the accumulation of sediment or sludge in narrow passages, particu larly between the spaced walls of the cooler and the outlet passages extending from the innerend of the cooler to the outer end. I also provide a cooler having an outlet passage between the 'walls thereof with suf?cient sectional area to provide a substantial ?ow even under the rather limit- ‘' ed pressure head available in port coolers as us - ' ‘ Referring now in detail to the drawings,’ the cooler of my invention comprises a water jacket IU of arch section including spaced inner and outer walls I l and 12, respectively. The cooler is fabricated from steel plate by welding. It is installed in a port I3 defined‘ by brick walls adapt ed to deliver a mixture of preheated air and fuel to the combustion space within a furnace such as the ordinary open hearth furnace. The cooler has a shape conforming to the port, i. e.,'- it slopes downwardly toward its inner ‘end. A reservoir in. the form of a box l4 extends upwardly above the-outer end of the‘ cooler and is adapted to be supplied with‘ water from any convenient. source. The reservoir, of course, communicates with the In a preferred embodiment, the port cooler of space between the walls II and I2. A water level my invention comprises a water jacket of arch section having spaced inner and outer walls withl 20 is maintained in the‘reservoir at approximately the upper edge of a partition 15. Excess water an outlet passage therebetween extending from ‘ ?ows over the “partition into an outlet'trough adjacent the inner end of the cooler to the outer l6 having drain connections". 7 .. end, the passage having a generally rectangular Anoutlet ‘passage l8 extends from a point ad section and a width several times its depth, and the depth being only approximately one-half the 25 jacent the inner end of the cooler to‘the outer end thereof where it communicates with the distance between the inner and outer walls. Con trough IS. The passage I8 is preferably formed veniently, the passage is formed by achannel by a channel having its ?anges welded to the. in-' having its ?anges welded to one of the \walls, ner wall ll. ‘As shown in Figures 2, 3 and 4, the preferably the inner wall. The outlet pipe pref erably has branches extending downwardly and 30 channel extends along the ridge orhighest por tion of the inner wall II. The passage [8 has a laterally adjacent the inner end of the cooler to rectangular section and a width several times a?ord good circulation adjacent the inner end of its depth. The depth, furthermore, is only ap the cooler which, of course, is subjected to the proximately one-half the distance between the highest temperature. ‘ ' , For a complete understanding of the invention, 35 walls II and 12 so that it does not obstruct free ?ow- of water through the spacer-between the reference is made to the accompanying draw walls." A vent or surge pipe l9 extends upwardly ings illustrating the present preferred embodi from'the passage l8 through the reservoir I4 ment and the following detailed description. In above the upper edge of-the. partition [5. the drawings, The passage l8 preferably has a number of Figure 1 is a side elevation of my port cooler, branches 20, 2| and 22 extending laterally. and partly broken away and partly in ‘section, show downwardly from its inner end. These passages ing the outline of the brick work de?ning the port may conveniently be de?ned by channels welded proper in chain lines; to the inner wall of the jacket in the same man Figure 2 is a plan view of the cooler; ' ner as, that forming the passage I8. The chan ually constructed. Figure 3 is an end elevation such as would be nels forming the branches 20 and 2|, as shown, ' seen by looking from the right in Figure 1; are curved to conform to the'a-rch shape of the Figure 4 is a transverse section taken along the cooler. The branches, like the mainrpassage ill, plane of line IV-—IV of Figure 1; have rectangular sections and a width several Figure 5 is a partial longitudinal section taken 50 times their depth. Their depth, furthermore, is along the plane of line V—V of Figure 3; only about one-half the spacing between the Figure 6 is a partial section taken along the walls II and I2. There is thus substantially no plane of line VI-V£ of Figure 5; possibility of accumulation of scale or other sed iment between the outer wall and the channels Figure '7 is a partial section taken along the plane of line VII-VII of Figure 1; . 55 defining the passages, sumcient to interfere se 2,406,399 3 :-' 4 . riously with circulation of Water through the ' The course of ‘circulation through the cooler is ‘ downwardly from the reservoir I4 along the sides and top of the cooler toward the inner end there of from which the water ?ows into the branches 20, 2! and 22 and‘ thence throughv the main outlet passage -l'8'~to the outlet trough l6. Ba?ies [8a in the trough [6 on opposite sides of the passage [8 insure that the latter is kept. ?lled to the ex treme upper end. I claim: I l. A furnace port cooler comprising an elonq gated Water jacket of arch section including spaced inner and outer walls, and means de?ning an outlet passage extending longitudinally of the cooler from adjacent the inner end thereof to the outer end, said passage being generally rectangu larin section and having a depthapproximately jacket. one-half the distance between said walls. ,10 . . 2. A furnace port cooler comprising an elon gated water jacket of arch section including spaced inner and outer walls, and a relatively wide ?at outlet passage extending along the ridge Sludge, scale or other sediment'a‘ccumulating ,_ in the jacket falls freely to the bottom of the “ of the inner wall from adjacent the inner end of ‘ sides thereof which, have ‘inwardly extending . 1 ?anges 23. Flushing pipes 24 extend into these 15 the cooler to the outer end thereof. 3. Thelappa'ratus de?ned by claim 1 character ?anges and are supported on brackets 25. Slots ized by said passage having a plurality of branches 26 at the inner ends. of .the pipes discharge jets extending therefrom. ' of flushing water’ when the pipes are ‘connected 1 4.,A furnace port cooler comprising‘ an elon to a suitable source thereof, whereby accum‘ue ‘1' 1 lated ‘sediment may be washed out through holes 20 gated water jacket of arch section including spaced inner and outer walls, and a relatively ‘ Hand 28 in the outer end of the cooler. These wide ?at outlet passage between said Walls from adjacent the inner end of the cooler to the outer 7 } holes, of course, are closed by suitable plugs be ‘ tween successive flushings. ' ' ' .It will be apparent from the foregoing explan end thereof. _ _ , . . . 5. A furnace port cooler comprising an elon— ‘ ation that the invention is characterized by nu-4 .25 gated water jacket of arch section including merous advantages over port coolers as previous spaced inner and outer walls, and means de?ning ' . ly constructed. In the ?rst place, the shape and an outlet passage extending longitudinally of the cooler from adjacent the inner end thereof to the outer end, said passage being generally rectangu 1 disposition of the outlet passage and its branches; 1 as already indicated, are such that they do not . facilitate the accumulation of sedimentjbetween so lar in section and having branches‘ extending ‘ them and the outer. wall: so as to interfere with ' ‘ circulation of the coolingrrwater. The , arrange- ‘ therefrom. . . . " " ' , 6. A furnace port cooler comprising'anelon 1 ment of the outlet passage and its branches, gated water jacket ~ of arch section including 1 furthermore, is also such as to create an im- ' 1 proved circulation of» cooling water. This results .35 spaced inner and outer walls, and a vchannel be tween said Walls having its ?anges weldeditoone ‘ partly from‘the thermo-siphon actioncaused'by . of them and extending from adjacent the inner ‘ the locationjof the- passage 18, at; the ridgeiof 1 the inner wall .and from its upward slope. end, of the cooler to the outer end therebyr'proe viding an outlet passage of rectangular section 1' the'bottom of the sides'fromwhich it may be ‘1.40 having a' width several times its depth. ‘ sediment formed in the COOleris free to fall to easily removed by periodic ?ushing.~ The en 7 j trances for water returning through the outlet 1 passage i8, 1. ‘e., the lower endsof the branches i 20, 2| and 22,';ar,e located closely' adjacent’ the ' *7. The apparatusde?ned by claim ?jc'harac terized by branch channels extending from'said . ?rst-mentioned channel, said branch channels also having their ?anges welded to one of said ', ‘ , ‘ L I inner end: of the cooler whichis subjected,‘ to .45 walls. ‘ 8. A furnace port cooler comprising an elon the highest temperature. .Atvthe same time,_the gated wvater jacket of arch section including 1 .sectional area. of .the outlet passage and its ‘ spaced inner and outer walls, and’ari inverted. ‘ branches is sufficient to maintain the ?ow of a _ substantial volume of .water even under the rela- . channel ‘extending along the ridge of'ithe inner j~ tively' low head available in the-reservoir. l4, .50 wall from_-adjacent the inner end thereofftoithe ' outer end, the flanges of thejcha‘nnelbeing welded - It is to be noted that while the branches 20, 2| to the inner Wall whereby the’ channel de?nes an and 22 are desirable, they may not be necessary outlet passage. 7 ‘r ‘ . V _ I . in all cases.’ On the other'hand, additional plate 9. The apparatus'deflned by claim ‘8 charac ‘ eral branches from the main'outlet passage, l8 ' ; may be employed,'if.desired. These and other 55 terized by branch channels 'extendiing'frornsaid ‘ similar changes in the details of the. construc ‘ tion disclosed may,rof course, be made without ‘ departing from the spirit of the invention or the scope of the appended claims. ?rst-mentioned, channel, said branch‘ channels ' also having their ?anges welded to said" inner Wall. , " ' . " EDWARD W. PQTTMEYER‘. '