US1472474A

US1472474A - David s

Info

Publication number: US1472474A
Authority: US
Publication date: 1923-10-30
Anticipated expiration: 1940-10-30

Description

Oct. 30, 1923. 1,472,474

D. s. JAcoBus STEAM BOILER Original Filed April 15, 1919 aoaoeo sacan uooooo oooooo noounuoaue oenaonouao IN V EN TOR.

@andi Patented Oct. 30, 1923.

UNITED s'rarss;

maar PATENT ori-"ice,

DAVID S. JACOBUS, OF JERSEY CITY, NEW' JERSEY, ASSIGNOR TO THE BABCOCK LW/VIL- COX COMPANY, F BAYONNE, NEV JERSEY, A CORPORATION OF NEW JERSEY.

STEAM BUTLER.

Original application led April 15, 1919, Serial No. 290,180. Divided and this application led December To all enf/oom t may concern.'

Be it kno-wn that I, Dnvrn S. .Licor-JUS, a citizen or the United States, residing at Jersey City, in the county of Hudson and State ot N ew Jersey, have invented certain ew and useful improvements in Steam Boilers, of which the following is a speciiication.

ln the drawing, Fig. 1 is a vertical trans verse section through a boiler showing one embodiment ormy invention; Fig. 2 isa section on the plane et the line 2 2 of Figl, and Fig. 3 is an enlarged section through the p down-take headers to illustrate the method 'i entire length ot the tubes the boiler beine 5:2 Y 7 C lired at both liront and rear by underteed stoker mechanisms 3 et well known construction, ylhe lower ends ot the tubes of alternate vertical rows ot the upper bank are connected to downtake headers 1 and 5, V and the upper ends ot said tubes are con-` nccted to uptake headers 6 and '7, while the* lower ends of the tubes o1 alternate vertical rows ot the lower bank rare connectedl to header sections 8 and 9, and the-upperfends oit said tubes 'are connected with'drop-leg extensions G and 7 ot the uptake headersf G and 7. rlhe headers l and 5 are connected to the header sections 8 and 9, respectively, by relatively long nipples 1G and 11, and the upper ends ot' the headers 4t and 5 are connected to a transverse steam and water drain l2 ly nipples 13 and lll. Said drum is also connected to the uptake headers `G and .7 by tworows of horizontal tubes A baille 16 extends over the upper row ot tubes 2 trom the header sections 8 and 9 for a portion or their length, and a trans verse baille 17 divides the upperV banket tubes into two passes. rl`he space between headers ot superheater 26 is closed by a baille and the horizontal spaces between the upper headers and between the lower headers ot the two superheaters are closed the hottest water.

Serial No. 608,716.

`by the usual battle blocks laid on the supernected by tubes'20. This economizer may constitute the high pressure stage ot an economiser system, the low pressure stage of which is not shown. The tubes and boxes ot the economizer are preferably of wrought iron or wrought steel to withstand the high boiler pressure to which they are subjected. As shown, it is divided into `three sections, water entering the uppermost section through the pipe 21 and leaving said section through the pipe 22, by which the water is'delivered to the middle section and leaves the latter through the pipe 23, which delivers it to the lowermost section, from which the water itlows through a pipe 24 to the steam and water drum 12.

By arranging the economizer in the way described, the advantages of the counterflow principle are secured, as the uppermost of the three sections which comes in Contact with the coolest gases will contain the coolest water, the middle section which comes in contact with the gases of an intermediate temperature, somewhat hotter water, and the third and lowermost section which comes in contact with the hottest gases, will contain Each section is ted at the lower part and the heated water passes away trom the upper part. This results in the water flowing upwardly throughout each section which gives a more even distribution between the different tubes than should the water be ted downwardly through thesections. Again, byv feeding the water upwardly throughout each section in the way described, the water flowing through each tube flows in a slightly upwarddirection and tends to more thoroughly sweep out any air or contained gases from the tubes than would be the case should there be a downward flow.

A primary superheater 25 is preferably located in the triangular space above the ,upper bank of tubes, and a secondary superheater 26 is located in the secondary combustion chamber between the two banks of tubes, the steam from the drum l2 being delivered through the pipe 27 to the superheater 25 and from the latter through a pipe 28 to the upper box of the superheater 26. The superheated steam is delivered to the main through a connection from the lower box 26 oft the superheater 26. A second Vsuperheater 29 is also located in the secondary combustion chamber between the two banks of tubes, to the upper cross-box of which steam is delivered from one of the stages of a steam turbine, and the steam so resuperheated, returned through a connection from the cross-box 29 to a lower pressure section of the turbine. In order to completely flood the superheater loops between the banks, these loops are related to 4the boxes in such a way that no air will be trapped in the loops as the water rises in the superheater tubes. It will also be noted that the superheater tubes may be drained after they have been flooded, by permitting the water to pass out through the boxes. i In the particular construction shown, theretore, the superheater can be both flooded and drained. This is of special advantage in the case of the superheaters between the banks; since under certain conditions of service, it may be necessary to completely Hood the loops to prevent burning them inl starting up the boiler when no steam is flowing through the superheater.l The nearer the superheater tubes are to the combustion chamber, the more important it is to flood them. 26 and 29 should be so proportioned that they can be introduced by passing them between the nipples l0 and l1.

In the drawing, I have shown a staggered arrangenfient of the headers whereby headers having a greater width than the distance between the tubes measured horizontally may be employed, and thus enabling the use of a heavier construction of header for agiven tube diameter than is possible where the headers are arranged in the'y same plane, For example, if a boiler for exceptionally high pressure is desired, a header that would normally be used for a four-inch diameter tube could be made oit the saine outside dimensions but with thicker walls and could be employed for a three-inch tube. Should all oi the headers when constructed in this way be placedv in the same plane,` the spaces between the three-inch tubes for the passage of the gases would be wider than they should be for the best operation and eiiciency. By overlapping the headers" the proper spaces for the passage 'of the' vgases is secured between the tubes. With 'the staggered and overlapping arrangement of the headers, I provide means for calkinig the spaces between the headers to 'secure a gas-tight joint, as by placing asbestos or other plastic material 48 betweenthe head- Also the loops vfor the superheatersr ers and holding such material in position by special pieces 49, in the form oi' angle- -irons, bent to fit the stagger of the headers.

The pieces 49 may be held by fluted struts 50, which, after being placed in position and being struck, will be extended and made to bear tight against the pieces 49.

By the arrangement described, the staggered arrangement of the nipples l0 and l1 can be secured with straight nipples instead of using curved nipples, as described in a companion application. Also, the staggered arrangement ot' the nipples i3 and 14 which connect the steam and water drum l2 with the headers 4 and 5 results in the cutting away oi' a less amount of metal in a longitudinal line measured along the drum thereby giving greater strength fora given drum thickness than is possible with all of the nipples arranged in the same plane.

I claim:

l. A water tube boiler having front and rear vertically ext-ending water compartments connected by two banks of horizontally inclined water tubes, the banks being spaced apart to provide a chamber of a height as great as that of a plurality or" rows of thewater tubes ot the upper bank, baffling for directing the products of com` bustion, said bailiing having a longitudinal baffle extending from the lower ends of the water tubes above a plurality-of rows of water tubes to expose the major portion of their length and allow a free and unobstructed entrance of the gases to the chamber at the higher ends of the'tubes, and an upwardly projecting battling means extending from the inner end of the horizontally extending baille transversely of the water tubes above the chamber, a superheater located in said chamber and having boxes at the-rear of a plane extending through the front headers provided with super-heater tubes having return bends within `the boiler setting, a furnace below the water tubes and extending substantially the length of the water tubes, and a pair of Stoker mechanisms projecting from the front. and rear walls into the lower part of the furnace below the water tubes.

2. A water tube boiler having front and rear vertically extending water compartments connected by two banks of horizontally inclined water tubes, the banks being spaced apart to provide a chamber of a Vheight as great as that of a plurality ot rows of the water tubes of the upper bank, baffling for directing the products of combustion, said 'baffling having a longitudinal battle extending from the lower ends ot the water tubes above a plurality of rows of water tubes to expose the water tubes below jor portion of 'their length and allow tree Y said baffle to the iiame and gases for the ma- Y lll and unobstructed entrance of the gases to the chamber at the higher epds of the tubes, and an upwardly projecting bafliing means extending from the inner end of the horizontally extending baille transversely of the water tubes above the chamber and inclined to the vertical 'to restrict the upward iiow of the gases, a superheater locatedin said chamber and having boxes at the rear f a plane extending through the front headers provided with superheater tubes having return bends within the boiler setting, a furnace below the water tubes and extending substantially the length of the water tubes, and a pair of underfeed stolrer mechanisms projecting from the front and rear walls into the lower part of the furnace below the water tubes.

3. fr water tube boiler having front and rear vertically extending water compartments connected by two banks of horizontally inclined water tubes, the banlrs being spaced apart to provide a chamber of a height as great as that of a plurality of rows of the water tubes of the upper banlr, bafiling for directing the products of combustion, said baffling having a longitudinal bafiie extending from the lower ends of the wa ter tubes above a plurality of rows of water tubes to expose the water tubes below said baille lo the flame and gases for the major portion of their length and allow a free and unobstructed entrance of the gases to the chamber at the higher ends of the tubes, and an upwardly projecting bai'liing means extending from the inner end of the horizont ll'y extending baille transversely of the water tubes above the chamber, a superlieater located in said chamber and having boxes at the r iur of a plane extending through the front headers provided with superheater tubes having return bends within the boiler setting, a furnace below the water tubes and extending substantially the length of the water tubes, and a pair of underfeed stolrer mechanisms projecting from the front and rear walls into the lower part of the furnace below the water tubes, the lower portion ofv the chamber between the banks of water tubes being unobstructed by cross baffling to provide for turning of the stream of heated within said chamber after the second or down pass of said gases on their way to the outlet. i l

Il. it steam boiler having a furnace arranged to give an unobstructed primary combustion chamber extending the entire distance between the front and rear walls of tbc furnace, horizontally inclined water tubes extending across the furnace chamber, said tubes being arranged in spaced apart banlcs and with the lowermost tubes expcsedfi'ior substantially their entire length to the radiant heat of the furnace, a superheater in the space between the banks of water tubes, a pair of underfeed stoher mechanisins disposed on either side of the central vertical plane of the furnace with their grates inclined toward each other, a horizontal haine extending from the lower ends of the water tubes longitudinally of the water tubes and above a plurality of rows of said tubes, and a transverse battling means extending upwardly from the inner end of the longitudinal baille,

5. A steam boiler having a furnace arranged to give an unobstructed primary combustion chamber extending the entire distance between the front and rear walls of the furnace, horizontally .inclined water tubes extending across the furnace chainber, said tubes being arranged in spaced apart banks and with the lowermost tubes exposed for substantially their entire length to the radiant heat of the furnace, a superheater in the space between the banks of water tubes, a pair of underfeed Stoker mechanisms disposed on either side of the central vertical plane of the furnace with their grates inclined toward each other, a horizontal baille extending from the lower ends of the water tubes longitudinally of the water tubes and above a plurality of rows thereof, and a transverse baffling means extending upwardly from the inner end of the longitudinal baille and across water tubes above the superheater space.

6. t steam boiler having a furnace arranged to give an unobstructed primary combustion chamber extending the entire distance between the front and rear walls of the furnace, horizontally inclined water tubes extending across the furnace chamber, said tubes being arranged in spaced apart banks and with the lowermost tubes exposed for substantially their entire length to the radiant heat of the furnace, a U-tube superheater in the space between the banks of water tubes, a pair of undcrfeed stolrer mechanisms disposed on either side of the central vertical plane of the furnace with their graies inclined toward each other, a horizontal baille extending from the lower ends of the water tubes longitudinally of the water tubes and above a plurality of the rows thereof, and an inclined transverse batting means extending upwardly from the inner end of the longitudinal baffle.

7. A steam boilerhaving a furnace arranged to give an unobstructed primarycombustion chamber extending the entire distance between the front and rear walls of the furnace7 horizontally inclined water tubes extending across the furnace chamber, said tubes being arranged in spaced apart banks and with the lowermost tubes exposed for substantially their entire length to the radiant heat of the furnace, a U-tube super-heater in the space between the banks of water tubes with the superheatertubes extending in the same general direction as the water tubes, a pair of underfeed stoker mechanisms disposed on either side of the central vertical plane of the furnace with their grates inclined toward each other, a horizontal baille extending from the lower ends of the water tubes longitudinally of the water tubes and above a plurality of the rows thereof, and a transverse battling means extending upwardly from the inner end of the longitudinal baille and across the water tubes of the upper bank.

8. A steam boiler having a furnace arranged to give an unobstructed primary combustion chamber extending the entire distance between the front and rear walls of the furnace, horizontallyr inclined water tubes extending across the furnace chamber, said tubes being arranged in spaced apart banks and with the lowermost tubes exposed for substantially their entire length to the radiant heat of the furnace, a superheater in the space between the banks of water tubes, a pair of underfeed stoker mechanisms symmetrically disposed on either side of the central vertical plane of the furnacewith their grates inclined toward each other, a horizontal baflle extending from the lower ends of the water tubes longitudinally of the water tubes and above a plurality of the rows thereof, and a transverse battling means extending' upwardly from the inner end of the longitudinal baffle, and arranged to give the gases a restricted upward pass across the water tubes located above the superheater.

9. A steam boiler having a furnace ar ranged to give an unobstructed primary combustion chamber extending the entire distance between the front and rear walls of the furnace, horizontally inclined water tubes extending across the furnace chamber, said tubes being arranged in spaced-apart banks and with the lowermost tubes exposed for substantially their entire length to the radiant heat of the furnace, a superheater in the space between the banks of wat-er tubes and having looped tubes arranged so that they can be flooded with water, a pair of underfeed stoker mechanisms disposed on either side of the central vertical plane of the furnace with their grates inclined toward each other, a horizontal baille extend- .ing from the lower ends of the water tubes longitudinally of the water tubes and above a plurality of rows of said tubes, and a transverse bafliing means extending upwardly from the inner end of the longitudinal baille.

10. A steam boiler having a furnace arranged to give an unobstructed primary combustion chamber extending the entire distance between the front and rear walls of the furnace, horizontally inclined water tubes extending across the furnace chamber, said tubes being arranged in spaced-apart banks and with the lowermost tubes exposed for substantially their entire length to the radiant heat of the furnace, a superheater in the space between the banks of water tubes and having looped tubes arranged so that they can be flooded with water and drained, a pair of underfeed stoker mechanism disposed on either side of the central vertical plane of the furnace with their grates inclined toward each other, a horizontal baffie extending from the lower ends of the water tubes longitudinally of the water tubes and above a plurality of rows of said tubes, and a transverse bafliing means extending upwardly from the inner end of the longitudinal baille.

ll. A water tube boiler having front and rear vertically extending water compart-I ments connected by two banks of horizontally inclined water tubes, the banks being l ed apart to provide a chamber of a height as great as that of a plurality of rows of the water tubes of the upper bank, baffling for directing the products of combustion, said baffling having a longitudinal baille extending` from the lower ends of the water tubes above a plurality of rows of water tubes to expose the water tubes below said baffle to the flame and gases for the major portion of their length and allow a free and unobstructed entrance of the gases to the chamber at the higher ends of the tubes, and an upwardly projecting ballling means extending from the inner end ofthe horizontally extending' baille transversely of the water tubes above the chamber, a. superheater located in said chamber and having boxes at the rear of a plane extending through the front headers and provided with superheater tubes having return bends within the boiler setting, the tubes of the superheater being arranged so that they can be flooded with Water, and a furnace below the water tubes and extending substantially the length of the water tubes.

DAVID S. JAC/GBUS.