US1972143A - Superheater boiler - Google Patents

Description

Sept. 4, 1934. c. w. GORDON 3 SUPERHEATER BOILER Filed April 1, 1933 2 Sheets-Sheet 1 'NVENTOR ca /muss M qokmv BY? 41/ h ATTORNEY Sept. 4, 1934. Q GORDON 1,972,143

SUPERHEATER BOILER Filed April 1, 1933 2 Sheets-Sheet 2 CO. v to 0.1 /2 l4 ag smim in P-Q 69 y g; y w-a .'UIQQQU INVENTOR cH/IRLES M fioRoo/v ATTORNEY Patented Sept. 4, 1934 4 warren STATES" PATENT OFFICE SUPERHEATER BOILER Charles W. Gordon, Munster, Ind;, assignor to The Snperheater Company, New York, N. Y.

Application April 1,1933, Serial No. 663,959

10 Claims. (Cl'. 122-478) The present invention relates to superheater loops '22, 22. The units 21 preferably are placed boilers of the type having lanes through its front at intersections oflanes 18 and 20 and only minor bank someperpendicular to the furnace face portions of such units need project outside of and some parallel thereto. 7 the lanes 20; The loops 22 are arranged diagonal- 5 Many boilers have had superheater elements 1y with respect to the lanes 18 and 20 so thata leg 60 interspersed among the tubes of the generating of one loop of a' given unit lies substantially in banks. Such arrangements have been very sucfront'of oneleg of the other loop of such unit in cessful, but the ever advancing requirements of thecenter line of a given lane 18,.the' other two practice have indicated the desirability of imlegs of a given unit lying partlyout'of the lane 10 proving them in certain directions. 18 but whollywithin the intersecting lane 20. 65'.

t is an object of my invention to provide an As will be apparent from comparing Figs. 1 and arrangement adapted to better utilize'the avail- 2','each unit comes off the saturated header 24 so able space in superheater boilers so as to permit that the. steam runs from such header downsomewhat higher steam temperatures with a wardly in the leg aofJeach unit as far as the given amount of superheater surface ina given return bend 26, thence upwardlythrough the leg 70'? boiler or to permitgreatly increasing the steam b (this appearing. only in Fig. 2), into the return temperatures without much increase of the-space bend 28 (this appearing only in Fig.1), thence required. 1 across to the legaa. in which the steam again In order that my invention, together with its flows downwardly into thereturn bend 30, and

20 objects and advantages, may be readilyand fully thence upwardly through the leg hi) to the header 75'. understood, I will now describe in detail,'by way 32 for superheated steam. Each of the units 21 of example and in connection with the accomwill, of course, beunderstoodto be substantially panying drawings, several arrangements of superlike .every other unit. As shown in the drawings, heater boiler within the scope of my invention. none of the units are closer to the furnace face 25 In the drawings, I than the second row 20 from such face. However. 8

Fig. 1 is a sectional elevationof a superheater I'do not limit myself to this. All the units are, boiler in accordance with my invention. however, preferably grouped so that the range of Fig. 2. is' a section on'i-th'e'line 22 of Fig. 1. gas temperature over the entire superheater shall Fig. 3 is a view similar to Fig. 2, but illusvarywithin the minimum limits to thereby protrating a slightly different arrangement of 'genduce a high average steam temperature from a crating tubes and superheater elements. given amount of superheater. surface, the ar- Fig. 4 is also similar to Fig. 2 but illustratesa rangement-of the units so as to have groups of further modification of tubes-andelements. two loops each and adapted to be each installed The superheater boiler illustrated in Figs. 1 at the junction of two lanes at right angles perand 2 is designated by reference character 10. mitting such grouping of the loops. -While I have 90 Boiler 10 is of the Stirling type having a front shown the units as having only two loops apiece, generating bank 12 of vertically inclined water I do not-limitmyself to this, astwo groups of tubes 14, 14. The tubes 14 are arranged, as loops may easily be connected together to make best shown in Fig. 2, to provide two setsof lanes units each having four loops.

through the bank. In Fig. 2, as well as in Figs. The arrangement illustrated in Fig. 3 differs 95 3 and 4, the furnace face of the bank 1 2-is indifrom that shown in Fig. 2 in that thegenerating cated by arrows 16 which are placed at the point tubes 140i the bank 12A do not all have the same of entrance of the furnace gases-into the-bank.- spacing in the direction parallel to the furnace As shown in Fig. 2, the lanes between" the tubes face. In Fig. 3, the lanes 20, 20 are all the same 14 are in tWO Sets, 0116 Set 8; 3 being at g t size. and are the same size as those in Fig. 2. angles to the furnace face bank and the The lanes atright angles to the lanes 20 of Fig. other set 20, 20 running parallel to the furnace 3 are not all the same width, however, some such face of such bank. It willbe seen further that lanes, designated 18, having the same width as the distance between tube centers perpendicular those in Fig. 2, whereas every other lanein bank to the furnace face of the bank is the same as 12A running at right angles to the furnace face, 5

that between the tube centers in a direction designated 18A, is narrower than the lanes 18 parallel to the furnace. Interspersed between and lanes 20. Such an arrangement having althe generating tubes 14 and substantially in two ternate lanes 18 and 18A is well known in Stiradjacent lanes 20 are two groups of superheater ling type boilers. With such an arrangement of 55. units 21, 21 each composed of a group of two generating tubes 14, it is inconvenient to use units of the same general type as units 21 at the intersections of lanes 20 with lanes 18A. I have therefore illustrated in Fig. 3 two types of units, one type designated 21A and the other type designated 34. Units 21A have the same general arrangements as units 21, but may be given a greater span parallel to lanes 20 than was given units 21. The reason for such greater span will presently appear. The units 34 comprise two loops each, and the loops of each unit lie in a given plane on the center line of one of the lanes 18A. The arrangement ofunits 34 altogether in planes at right angles to the furnace face provides more room in the lanes 20 for the units 21A and I have therefore taken advantage of this fact in the arrangement illustrated in Fig. 3 to make the return bends 26A and 30A of larger radius than the bends 26 and 30 (Fig. 2), thereby spacing the legs I; and aa farther apart. The other two legs of the units 21A, however, retain the same relative positions in Fig.8 as such legs in Fig. 2, lying substantially on the center lines of the lanes 18. I

The arrangement of the tubes .14; and the bank 12?, illustrated in Fig. l, differs from that shown in Fig. 2 and also from that shown in Fig. 3 in that the tubes 14 are equally'spaced in the direction parallel to the furnace face by the, same amount as in Fig. 2 but have a greater distance between centers in the direction perpendicular to the furnace face so that the lanes 20A are wider than the lanes 18, the lanes 20 being, however, all of the same width. With such arrangement of the generating tubes 14, I am able to employ units 213 of the same arrangement throughout thetube bank. Units 2113 are quite similar to units 21A, but advantage is taken of the distance between tubesl l. in the direction parallel to lanes 18 to put a leg of each of two adjacent units on the center line between two adjacent tubes 14 in the direction of lanes 18. That is to say, as shown in Fig. 4, leg Z; of one unit lies alongside of the leg cm of an adjacent unit in the same lane 20A. Otherwise units 213 are the same as units 21 and 21A.

It will be seenthat, while units 21'; 21A and 213 all lie principally in lanes parallel to the furnacefaces of the banks 12, 12A and12l3, the centers of all such units lie substantially at points of intersection between lanes parallel to thefurnace faces and lanes perpendicular to such faces. It will be seen'further that in each of the figures. the units 21, 21A and 213 all have the loops of whichthe units are composed lying in planes inclined both to the lanes 18 and to the lanes 20 and 20A respectively.

It will be seen that the arrangements of generating tubes and superheater units herein described perniit obtaining greatly increased steam temperature as compared to one having its superheater units only in planes perpendicular to the furnace face without unduly restricting the available area for gas flow and without requiring a much deeper bank. Furthermore, the required surface being condensed into a smaller, and therefore hotter, gas zone the variation of steam temperature with load will be less while less total surface is required for a given total steam temperature.

What I claim is:

1. The combination of a boiler having a bank of generating tubes arranged to provide a group of lanes in such bank in a direction at right angles to the furnace face of the bank and to provide another group of lanes parallel to such face, and superheater units in said lanes, certain of said units each having a group of loops at the intersection of a lane at right angles to said face with one parallel thereto and substantially within the width of the lane parallel to said furnace face.

I 2. The combination as set forth in claim 1 and in'which the units therein described are arranged in two adjacent lanes lying parallel to the furnace face of the bank.

3. The combination as set forth in claim 1 and in which a leg of one loop of a given unit and one leg of the adjacent loop of such unit lie substantially in the central line of the lane perpendicular to the furnace face and the other two legs of such loops lie on opposite sides of said line and in the lane parallel to the furnace face.

4. The combination as set forth in claim 1 and in which certain of the lanes perpendicular to the furnace face are narrower than others together with multi-loop units having their loops in the same narrow lane perpendicular to the furnace face and centrally of such lane.

5. The combination as set forth in claim 1 and in which the lanes parallel to the furnace'face' are wider than those perpendicular to such face together with units as described in claim 1 but which have legs of two different adjacent units overlapping .in the direction parallel to the furnace face. 7 a

. 6. The combination of a boiler having a bank of generating tubes arranged to provide a group of lanes in such bank in a direction at right angles to the furnace face of the bank and to provide another group of lanes parallel to such face, and superheating units in said lanes, certain of said units each having a group of loops at the intersection of a lane at right angles to said face with one parallel thereto and substantially within the width of the lane parallel to said furnace face, each loopof said certain units lying in a plane inclined to all said lanes.

7. The combination as set forth in claim 6 and in which at least one leg of each loop lies entirely within a lane parallel to the furnace face.

8. The combination as set forth in claim 6 and in which each loop has a leg in alignment with one of the other loopsof the same unitin the direction parallel to the furnace face.

' .9. The combination as set forth in claim 6 and in which each unit has a .leg of one of its loops lying in. alignment with a leg of another unit in the direction perpendicular to the furnace face and in the space between two adjacent water tubes. I i

10. The combination as set forth in claim 6 and in which a leg of one loop of a given unit and one leg of the adjacent loop of such unit lies substantially in the central line of the lane perpendicular to the furnace face and the other two legs of such loops lie on opposite sides'of said lane and in a line perpendicular to the furnace face.

CHARLES W. GORDON.

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