US212062A - Improvement in tubular boilers - Google Patents

Improvement in tubular boilers Download PDF

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US212062A
US212062A US212062DA US212062A US 212062 A US212062 A US 212062A US 212062D A US212062D A US 212062DA US 212062 A US212062 A US 212062A
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boiler
water
fire
box
improvement
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B9/00—Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body
    • F22B9/10—Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body the boiler body being disposed substantially horizontally, e.g. at the side of the combustion chamber
    • F22B9/12—Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body the boiler body being disposed substantially horizontally, e.g. at the side of the combustion chamber the fire tubes being in substantially horizontal arrangement

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  • NPEIERS PHOTD-UTHOGRAPHER. WASHINGTON, D. C.
  • I construct the furnace and fire-box with double walls, braced by bolts extending from the outer to the inner plates, the space between said plates constituting a jacket and water chamber.
  • the boiler is cylindrical in form, provided with horizontal lines, and is arranged in the fire-box directly over the grate-bars.
  • the length and Width of the furnace and fire-box exceed the dimensions of the boiler, and the arrangement of the boiler is such that the products of combustion from the fire-box pass under the boiler to the rear end, and return through the flues to the front end, and thence to the smoke-stack.
  • the boiler and the water-jacket communicate with each other by means of tubes or water-legs, and the upper portion of said jacket is provided with pipes leading to the steamdome or to the steam-space in the boiler.
  • Figure l is a longitudinal vertical section of an apparatus embodying my improvements
  • Fig. 2 is a transverse vertical section of the same.
  • the furnace and fire box A are of rectangular form at its sides, bottom, and ends, and its top is inclined upward, and vanishes into the upper portion of the horizontal cylindrical boiler B, which is arranged directly over the fire-grate a.
  • the lower portion of the furnace constitutes the fire-box, and is provided with doors a at the front end.
  • a casing, B (which may be a continuation of the boiler-casing,) extends beyond the front end of the furnace, above the doors a and constitutes a smoke-chamber, and it may be provided with a door, 6 From this chamber rises the smoke-stack 0.
  • the tubes or lines (I extend entirely through the boiler, and as the chamber B extends beyond the front end of the furnace, and the rear end of the boiler does not reach the rear wall of the furnace, the result is, that the products of combustion pass under the entire length of the boiler to the rear end thereof, and thence return through the dues d to the front end, and through the smoke-chamber to the smokest-ack.
  • dome E On the top of the boiler rests the dome E, which may be of any suitable description. It is here shown as of cylindrical form, connect ing with the steam-space of the boiler by means of tubes e c.
  • the rear end and two sides of the furnace and fire-box are provided with double walls, consisting of exterior and interior plates, connected and braced by bolts f.
  • the space between these plates forms a jacket or waterchamber, G, extending around three sides of a rectangle.
  • This water-jacket G communicates with the water-space of the boiler B by means of tubes or water-legs h, by which means a constant circulation of water is maintained.
  • the top of the Water-jacket may be provided with pipes, as shown in dotted lines, communicating with the steam-dome or the steamspace of the boiler, so that any steam which may be generated in the jacket will pass to the dome or the boiler.
  • the water jacket or chamber G not only 00 operates with the boiler in heating water for the generation of steam, but it serves as a pro teetion to the boiler and a preventive of con densation when the apparatus is exposed in cold weather.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (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

G. T. SNYDER. Tubular Boilers.
No. 212,062. 'Patente d Febil, I879.
GOO O00 000 ATTORNEYS.
NPEIERS. PHOTD-UTHOGRAPHER. WASHINGTON, D. C.
UNITED STATES PATENT OFFICE.
GEORGE T. SNYDER, OF NATRONA, PENNSYLVANIA.
IMPROVEMENT IN TUBULAR BOILERS.
Specification forming part of Letters Patent N 0. 212,062, dated February 4, 1879 application filed May 22, 1878.
To all whom it may concern:
Be it known that I, GEORGE T. SNYDER, of Natrona, in the county of Allegheny and State of Pennsylvania, have invented new and useful Improvements in Tubular Boilers, of which the following is a specification:
The invention will first be described in connection with the drawings, and then pointed out in the claim.
In carrying out my invention, I construct the furnace and fire-box with double walls, braced by bolts extending from the outer to the inner plates, the space between said plates constituting a jacket and water chamber. The boiler is cylindrical in form, provided with horizontal lines, and is arranged in the fire-box directly over the grate-bars. The length and Width of the furnace and fire-box exceed the dimensions of the boiler, and the arrangement of the boiler is such that the products of combustion from the fire-box pass under the boiler to the rear end, and return through the flues to the front end, and thence to the smoke-stack.
The boiler and the water-jacket communicate with each other by means of tubes or water-legs, and the upper portion of said jacket is provided with pipes leading to the steamdome or to the steam-space in the boiler.
The accompanying drawings illustrate the manner of carrying out my invention.
Figure l is a longitudinal vertical section of an apparatus embodying my improvements, and Fig. 2 is a transverse vertical section of the same.
Similar letters of reference indicate correspondin g parts.
The furnace and fire box A are of rectangular form at its sides, bottom, and ends, and its top is inclined upward, and vanishes into the upper portion of the horizontal cylindrical boiler B, which is arranged directly over the fire-grate a. The lower portion of the furnace constitutes the fire-box, and is provided with doors a at the front end.
A casing, B (which may be a continuation of the boiler-casing,) extends beyond the front end of the furnace, above the doors a and constitutes a smoke-chamber, and it may be provided with a door, 6 From this chamber rises the smoke-stack 0. As the tubes or lines (I extend entirely through the boiler, and as the chamber B extends beyond the front end of the furnace, and the rear end of the boiler does not reach the rear wall of the furnace, the result is, that the products of combustion pass under the entire length of the boiler to the rear end thereof, and thence return through the dues d to the front end, and through the smoke-chamber to the smokest-ack.
On the top of the boiler rests the dome E, which may be of any suitable description. It is here shown as of cylindrical form, connect ing with the steam-space of the boiler by means of tubes e c.
The rear end and two sides of the furnace and fire-box are provided with double walls, consisting of exterior and interior plates, connected and braced by bolts f. The space between these plates forms a jacket or waterchamber, G, extending around three sides of a rectangle. This water-jacket G communicates with the water-space of the boiler B by means of tubes or water-legs h, by which means a constant circulation of water is maintained. The top of the Water-jacket may be provided with pipes, as shown in dotted lines, communicating with the steam-dome or the steamspace of the boiler, so that any steam which may be generated in the jacket will pass to the dome or the boiler.
Among other advantages resulting from the construction above described, I avoid the ordinary crown-sheet, and the troublesome work of connecting the fire-box and tubular section, and also the complicated fastenings between the fire-box and cylinders.
I economize space by constructing the apparatus in a compact form, and I obtain a large extent of heating-surface, and thereby econo mize fuel.
By omitting the complicated features referred to I lessen the cost of construction.
The water jacket or chamber G not only 00 operates with the boiler in heating water for the generation of steam, but it serves as a pro teetion to the boiler and a preventive of con densation when the apparatus is exposed in cold weather.
Having thus described my invention, what, ter is produced, and also pipes for connecting I claim as new, and desire to secure by Letthe top of the water-leg with the steam-space ters Patent, isof the boiler, for the better liberation of the The combination with a steam-boiler, of the steam, substantially as described.
surrounding water-leg or casing Gr, provided GEORGE T. SNYDER. with pipes h, connected to the bottom of boiler lVitnesses:
and to the lower part of said water-leg at an JULIUS G. GNERRY,
angle, whereby a better circulation of the wa CHRIST. GONROY.
US212062D Improvement in tubular boilers Expired - Lifetime US212062A (en)

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