US425200A - Steam-generating fire-box - Google Patents

Steam-generating fire-box Download PDF

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US425200A
US425200A US425200DA US425200A US 425200 A US425200 A US 425200A US 425200D A US425200D A US 425200DA US 425200 A US425200 A US 425200A
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grate
steam
boiler
box
bars
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B5/00—Steam boilers of drum type, i.e. without internal furnace or fire tubes, the boiler body being contacted externally by flue gas
    • F22B5/02—Steam boilers of drum type, i.e. without internal furnace or fire tubes, the boiler body being contacted externally by flue gas with auxiliary water tubes outside the boiler body

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  • WITNESSES 6 UNITED STATES PATENT 'OFFICE.
  • Our invention relates to the fire-box used in connection with steam-boilers, and has for its object the production of a fire-box which shall be durable under the extreme heat used in generating steam of high pressure, and which shall be simple in construction and so divided in parts. that any portion which may be defective in construction or may become defective from use may be removed to be repaired or to be replaced by a perfect part with ease and without the necessity of disarranging any of the parts, except those which it is desired to remove.
  • Figure 1 shows a sectional side elevation showing the relative position of the steamboiler and fire-box.
  • Figs. 2 and 3 show two methods of connecting the hollow bridge wall with the hollow gratedoar.
  • Fig. 4 shows a top View of the grate-bars, bridge-wall, side walls, and hot-water and steam tank. A portion of the grate-bars is broken away to show the connection between the hot-water tank, side walls, and grate-bars.
  • Fig. 5 shows an end view of the side walls, bridge-wall, grate-bars, hot-water tank, and connection between the hot-water tank and grate-bars and side walls.
  • Fig. 6 shows a side view of a portion of one of the grate-bars
  • Fig. 7 shows a section across the same at the forward end.
  • Fig. 8 shows the meeting-point of the oblique sides of the grate-bars at the rear or larger end.
  • the support of the boiler and the support of the front end of the grate-bars are not shown, the support of the boiler consisting of the ordinary brick-setting, (shown in section in Figs. A and 5,) and the support of the front end of the gratabars consisting of an iron bar that passes across from one side wall to the other. 0
  • A represents the bridge-wall. It is made in sections equal in number to the number of grate-bars. Each section consists of a castiron box communicating at its lower front side with one of the series of grate-bars B and at its upper rear side with a stean1tank O.
  • the section A of the bridge-wall may be castin one piece with the grate-bar, as shown in Fig. 3, or it may be cast separate from it and united to it by means of a coupling-nip- 6o ple b, as shown in Fig. 2.
  • a Check-valve It is located in this return-pipe to prevent any reverse action of the steam in the boiler.
  • Each of the grate-bars B and each of the side walls E has on the under side at its forward end 'an inlet-pipe F, leading to it from the hot-water tank G, and the hot-water tank G, which is located in the ash-pit below the grate-bars, has an inlet-pipe leading into it from the lower forward end of the boiler WV.
  • a check-valve S prevents the steam formed in the hollow fire-box from forcing the water back into the boiler.
  • the grate-bars B, side walls E, and the sectionsA of the bridge-wall are hollow, and with the two tanks 0 and G and the connecting-pipes form a circulating system, through which there will be a @011- stant flow of water or steam when there is a fire on the grate. hen there is no fire 011 the grate, the parts would be full of water, 0 which would stand in the pipe I as high as the water-level in the boiler V. As soon as fire is placed upon the grate the water in the side walls and the bridge will begin to be converted into steam, and the steam will find 9 5 its escape through the pipe D, steam-tank C,
  • the tank t will ordinarily be full of steam rather than water.
  • the tank (l, which we call thehot- ⁇ vater tank, because it will ordinarily be full of hot water, is placed in the ash-pit below the grate-bars, and while its principal object isto form a reservoir, out of which the pipes F may lead to the side walls and to the gratebars, it; also forms an auxiliary mud-di.'um, in which any sediment coming down from the boiler will bedcposited and out of which any such sediment can be blown through the petcock J.
  • the grate-bar l is of a peculiar shape.
  • a cross-section of its tubular part is somewhat in the form of a sector of a circle, as shownin Fig. 7.
  • the arched part is turned downward and the angled part turned upward.
  • spring transverse grate-lugs L the upper surfaces of which lie in a horizontal plane slightlybelow the meeting-line at the apex of the lines c c, forming the uppersnri'aces of the tube of the grate-bar.
  • the object of this construction to produce a ridge on each grate-bar tube that rises slightly above the general surface of the grate-bar lugs and extends from the front to the rear of each grate-bar, furnishing a track over which thehoe of the fireman can be drawn.
  • the grate-bar is also made with a larger cross-section from top to bottom at one end than at the other, and the largest part is placed to the rear, as shown in Fig. 1, and in the large end is inserteda short piece of pipe K with a stop-cock 1.; in it, out of which may be blown any sediment that may accumulate in the grate-bar B.
  • the side walls E rise on either side of the bank of grate-bars suliiciently high to hold the mass of coal used in firing, and the bridgewall at the rear of the grate-bars effects the double result of holding the coals and of deflecting the flame upward against the bottom of. the boiler.
  • the sectional form of the bridge-wall renders it easy to remove any defective portion of the bridge-wall or any defective grate-bar and to make the removal of one grate-bar and its section of the bridgewall still more easy.
  • the pipe 1), leading from the section of the bridge-wall to the steam-tank (J, is made in two short pieces, held together by a conpling-nutN.
  • the oblique upper sides of the tube of the grate-bar 13 cause any ashes that may he formed to drop at once into the ash-pit with out clogging between the lugs of the gratebar.
  • a fire-box used in connection with a boiler for generating steam said tire-box having hollow grate-bars, hollow side walls, and a bridge-wall formed of independent hollow sections, all of said hollow parts being connected by means of piping with the boiler and arranged to be kept full of water from the boiler, substantially as described.
  • a firebox used in connection with a steamgenerating boiler having the bridgewall made in sections, each section being 1101- low and being connected with a hollow gratebar, and each section with its connected gratebar being arranged to be disconnected from the system of piping by which it is connected to the boiler and removed from the fire-box without disarranging other parts of the firebox.
  • a tire-box formed of independent hollow side walls and independent hollow grate-bars, each one of which is connected to an independent part of a bridge-wall formed of independent hollow sections, the said. side walls and grate-bars being arranged to receive water at their front end from. the front end of the boiler, and to deliver either water or steam at their rear end through an interposed collecting-tank to the rear end of the boiler, substantially as described.
  • a sectional bridge-wall of a tire-box of which each section is hollow, unconnected to the adjacent section on either side, but is connected to one of a bank of hollow grate-bars, so that the hollow interior of the section communicates with the hollow interior of the gratebar, substantially as and for the purpose described.
  • a hot-water tank fed from the forward end of; the boiler and feeding to the forward end of each of the grate-bars by means of independent pipes leading from the tank to the forward end of the grate-bars, substantially as and for the purpose described.
  • the firebox connected with a boiler for generating steam, having its side walls made of imlepemilent hollow castings unconnected with the bridge-wall, and each of which is arranged, as described, to receive water from the boiler and return it to the boiler cithe as water or steam.
  • a receiving steam-tank located behind the fire-box, into which lead the pipes from the several hollow pieces of the fire-box, and out of which leads the pipe returning steam to the boiler over the fire-box, substantially as and for the purpose described.
  • a hollow grate-bar having grate-lu gs on the upper side thereof and having its upper sides between the lugs oblique and meeting at an angle above the upper surface of the lugs,
  • the said meeting-line of the oblique sides being continuous from end to end of the gratebar and forming a ridge above the upper surface of the lugs, substantially as and for the purpose described.
  • a casting forming in One piece a grate-bar and a part of the sectional bridge-wall, the sections of said bridge-wall being unconnected with each other, substantially as and for the purpose described.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)

Description

' (-No Model.) 2 Sheets-Sheet 1.]
M. D. BEARDSLEB 8; J. H; HAND. STEAM GENERATING FIRE BOX.
No. 425,200. PatehtedApL-S, 18.90.
:17 11 .f ;jjli. ffjlf M lllll 2 Sheets-Sheet 2. M. D. BEARDSLEB & J. H. HAND.
sTEAM GENERATING FIRE BOX (No Model.)
Patented Apr. 8, 1890;
(Fig. f
WITNESSES 6 UNITED STATES PATENT 'OFFICE.
MARCUS D. BEARDSLEE, or DETROIT, AND JESsE H. HAND, OF ANN ARBOR,
ASSIGNORS or ONE-THIRD To THE GEO. T. SMITH IrIIDDLINGs PURIFIER COMPANY, OF JACKSON, MICHIGAN.
STEAM-G EN ERATING F|RE=BOX.
SPECIFICATION forming part of Letters Patent No. 425,200, dated April. 8, 1890.
Application filed April 1, 1889. Serial No, 305,779- (No model.)
To all whom it may concern:
Be it known that we, MARCUS D. BEARDs- LEE and JESSE I-I. HAND, citizens of the United States, of whom MARCUs D. BEARDs- LEE resides at Detroit, in the county of WVayne and State of Michigan, and JESSE H. HAND resides at Ann Arbor, in the county of Washtenaw and State of Michigan, have invented a new and useful Improvement in Steam-Generating Fire-Boxes, of which the following is a specification.
Our invention relates to the fire-box used in connection with steam-boilers, and has for its object the production of a fire-box which shall be durable under the extreme heat used in generating steam of high pressure, and which shall be simple in construction and so divided in parts. that any portion which may be defective in construction or may become defective from use may be removed to be repaired or to be replaced by a perfect part with ease and without the necessity of disarranging any of the parts, except those which it is desired to remove.
Figure 1 shows a sectional side elevation showing the relative position of the steamboiler and fire-box. Figs. 2 and 3 show two methods of connecting the hollow bridge wall with the hollow gratedoar. Fig. 4 shows a top View of the grate-bars, bridge-wall, side walls, and hot-water and steam tank. A portion of the grate-bars is broken away to show the connection between the hot-water tank, side walls, and grate-bars. Fig. 5 shows an end view of the side walls, bridge-wall, grate-bars, hot-water tank, and connection between the hot-water tank and grate-bars and side walls. Fig. 6 shows a side view of a portion of one of the grate-bars Fig. 7 shows a section across the same at the forward end. Fig. 8 shows the meeting-point of the oblique sides of the grate-bars at the rear or larger end.
The support of the boiler and the support of the front end of the grate-bars are not shown, the support of the boiler consisting of the ordinary brick-setting, (shown in section in Figs. A and 5,) and the support of the front end of the gratabars consisting of an iron bar that passes across from one side wall to the other. 0
A represents the bridge-wall. It is made in sections equal in number to the number of grate-bars. Each section consists of a castiron box communicating at its lower front side with one of the series of grate-bars B and at its upper rear side with a stean1tank O. The section A of the bridge-wall may be castin one piece with the grate-bar, as shown in Fig. 3, or it may be cast separate from it and united to it by means of a coupling-nip- 6o ple b, as shown in Fig. 2.
The steam tank 0 extends horizontally across between the side walls supporting the boiler and receives 011 its forward. side or side toward the fire a number of inlet-pipes D, of which there is one from each section of the bridge=wall and one from each of the side walls E E. On its opposite or rearward side ithas an outlet-pipe leading to and emptying into the upper part of the boiler W. A Check-valve It is located in this return-pipe to prevent any reverse action of the steam in the boiler.
Each of the grate-bars B and each of the side walls E has on the under side at its forward end 'an inlet-pipe F, leading to it from the hot-water tank G, and the hot-water tank G, which is located in the ash-pit below the grate-bars, has an inlet-pipe leading into it from the lower forward end of the boiler WV. A check-valve S prevents the steam formed in the hollow fire-box from forcing the water back into the boiler. The grate-bars B, side walls E, and the sectionsA of the bridge-wall are hollow, and with the two tanks 0 and G and the connecting-pipes form a circulating system, through which there will be a @011- stant flow of water or steam when there is a fire on the grate. hen there is no lire 011 the grate, the parts would be full of water, 0 which would stand in the pipe I as high as the water-level in the boiler V. As soon as fire is placed upon the grate the water in the side walls and the bridge will begin to be converted into steam, and the steam will find 9 5 its escape through the pipe D, steam-tank C,
and pipe I into the top of the boiler, and water will come in from the boiler in the other direction. The tank t will ordinarily be full of steam rather than water.
The tank (l, which we call thehot-\vater tank, because it will ordinarily be full of hot water, is placed in the ash-pit below the grate-bars, and while its principal object isto form a reservoir, out of which the pipes F may lead to the side walls and to the gratebars, it; also forms an auxiliary mud-di.'um, in which any sediment coming down from the boiler will bedcposited and out of which any such sediment can be blown through the petcock J.
The grate-bar l) is of a peculiar shape. A cross-section of its tubular part .is somewhat in the form of a sector of a circle, as shownin Fig. 7. In position the arched part is turned downward and the angled part turned upward. From the upper or angled sides spring transverse grate-lugs L, the upper surfaces of which lie in a horizontal plane slightlybelow the meeting-line at the apex of the lines c c, forming the uppersnri'aces of the tube of the grate-bar. The object of this construction to produce a ridge on each grate-bar tube that rises slightly above the general surface of the grate-bar lugs and extends from the front to the rear of each grate-bar, furnishing a track over which thehoe of the fireman can be drawn. The grate-bar is also made with a larger cross-section from top to bottom at one end than at the other, and the largest part is placed to the rear, as shown in Fig. 1, and in the large end is inserteda short piece of pipe K with a stop-cock 1.; in it, out of which may be blown any sediment that may accumulate in the grate-bar B.
The side walls E rise on either side of the bank of grate-bars suliiciently high to hold the mass of coal used in firing, and the bridgewall at the rear of the grate-bars effects the double result of holding the coals and of deflecting the flame upward against the bottom of. the boiler. The sectional form of the bridge-wall renders it easy to remove any defective portion of the bridge-wall or any defective grate-bar and to make the removal of one grate-bar and its section of the bridgewall still more easy. The pipe 1), leading from the section of the bridge-wall to the steam-tank (J, is made in two short pieces, held together by a conpling-nutN. The ends of the pieces of the pipe D which meet inthe nut- N are threaded one with a right-hand thread and the other with a left-hand thread, as shown in Fig. 4., and so, also, the upright parts of the pipes F are made each in two pieces, united in the same way by the unionnuts MI, so that in order to remove any one of the grates with its connected section of the bridge-wall it is only necessary to loosen the two nuts N and M on the pipes connected with that particular section.
The oblique upper sides of the tube of the grate-bar 13 cause any ashes that may he formed to drop at once into the ash-pit with out clogging between the lugs of the gratebar.
Having thus described our invention, what we claim as novel, and desire to have secured to us by Letters Patent, is--- 1. A fire-box used in connection with a boiler for generating steam, said tire-box having hollow grate-bars, hollow side walls, and a bridge-wall formed of independent hollow sections, all of said hollow parts being connected by means of piping with the boiler and arranged to be kept full of water from the boiler, substantially as described.
2. A lirebox used in connection with a steamgenerating boiler, having the bridgewall made in sections, each section being 1101- low and being connected with a hollow gratebar, and each section with its connected gratebar being arranged to be disconnected from the system of piping by which it is connected to the boiler and removed from the fire-box without disarranging other parts of the firebox.
In connection with a boiler for generating steam, a tire-box. formed of independent hollow side walls and independent hollow grate-bars, each one of which is connected to an independent part of a bridge-wall formed of independent hollow sections, the said. side walls and grate-bars being arranged to receive water at their front end from. the front end of the boiler, and to deliver either water or steam at their rear end through an interposed collecting-tank to the rear end of the boiler, substantially as described.
4.. The bridge-wall of a lire-box made in sections, each section being hollow, unconnected with the adjacent section on either side, and arranged, as described, to communicate with the boiler above the firebox by means of hollow connections and to be kept; full of water from the boiler.
5. A sectional bridge-wall of a tire-box, of which each section is hollow, unconnected to the adjacent section on either side, but is connected to one of a bank of hollow grate-bars, so that the hollow interior of the section communicates with the hollow interior of the gratebar, substantially as and for the purpose described.
0. In combination with abank of independent hollow grate-bars having an outlet at the rear end of. each bar for the escape of contained water, a hot-water tank fed from the forward end of; the boiler and feeding to the forward end of each of the grate-bars by means of independent pipes leading from the tank to the forward end of the grate-bars, substantially as and for the purpose described.
7. The firebox connected with a boiler for generating steam, having its side walls made of imlepemilent hollow castings unconnected with the bridge-wall, and each of which is arranged, as described, to receive water from the boiler and return it to the boiler cithe as water or steam.
8. In combination with a fire-box composed of independent hollow parts forming the back and sides thereof, a receiving steam-tank located behind the fire-box, into which lead the pipes from the several hollow pieces of the fire-box, and out of which leads the pipe returning steam to the boiler over the fire-box, substantially as and for the purpose described.
9. The combination of a steam-boiler, a firebox composed of hollow pieces, a system of piping arranged, as described, to lead Water from one end of the boiler into the hollow pieces composing the fire-box, and a system of piping, as described, to return the steam from the fire-box into the boiler, and checkvalves to check the reverse flow of either steam or water, substantially as described.
10. A hollow grate-bar having grate-lu gs on the upper side thereof and having its upper sides between the lugs oblique and meeting at an angle above the upper surface of the lugs,
the said meeting-line of the oblique sides being continuous from end to end of the gratebar and forming a ridge above the upper surface of the lugs, substantially as and for the purpose described.
11. In the fire-box, a casting forming in One piece a grate-bar and a part of the sectional bridge-wall, the sections of said bridge-wall being unconnected with each other, substantially as and for the purpose described.
12. In a fire-box, the combination of a grate and bridge-wall, said bridge-Wall being sectional and each section being independent of the sections adjacent to it, but connected with one of the grate-bars, substantially as described. MARCUS D. BEARDSLEE. JESSE H. HAND. Witnesses:
EFFIE I. CROFT, CHARLES F. BURTON.
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