US902951A - Water-tube boiler. - Google Patents

Water-tube boiler. Download PDF

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Publication number
US902951A
US902951A US38431607A US1907384316A US902951A US 902951 A US902951 A US 902951A US 38431607 A US38431607 A US 38431607A US 1907384316 A US1907384316 A US 1907384316A US 902951 A US902951 A US 902951A
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Prior art keywords
tubes
drum
water
tube boiler
row
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US38431607A
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William Dougherty
Carleton Y James
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B13/00—Steam boilers of fire-box type, i.e. the combustion of fuel being performed in a chamber or fire-box with subsequent flue(s) or fire tube(s), both chamber or fire-box and flues or fire tubes being built-in in the boiler body
    • F22B13/02—Steam boilers of fire-box type, i.e. the combustion of fuel being performed in a chamber or fire-box with subsequent flue(s) or fire tube(s), both chamber or fire-box and flues or fire tubes being built-in in the boiler body mounted in fixed position with the boiler body disposed upright
    • F22B13/023—Steam boilers of fire-box type, i.e. the combustion of fuel being performed in a chamber or fire-box with subsequent flue(s) or fire tube(s), both chamber or fire-box and flues or fire tubes being built-in in the boiler body mounted in fixed position with the boiler body disposed upright with auxiliary water tubes inside the fire-box, e.g. vertical tubes

Definitions

  • Our invention re ates to water tube boilers, and has for its object the production of a steam generator of the class in which the water is heated in tubes directly exposed to the burning furnace ases, those tubes having special form an particular arrangement whereby it is believed that greater economy of construction is attained, and leaking at the joints of the tubes with the end boxes and drum under expansion while steaming prevented.
  • furnace grate is marked A
  • front of the boiler setting is designated by the letter B
  • the back by C is designated by the letter D.
  • the bridge wall is referred to by the letter D.
  • the longitudinal drum of the boiler is designated E, and is in 0 on communication with the front end box I and the rear end box G as is customary.
  • the tubes H and J have substantially the same form. That is to say, each has a substantially horizontal straight portion opening into an end box, and a vertical portion openmg into the drum.
  • the outer-lying tubes J curve laterally lnward at the top for their connections with the drum, as shown in Fig. 2.
  • bafile plates K and L erected upon the brid e wall, and like horizontal and vertical ba e plates M and N direct the products of combustion from the grate bars through the system of tubes as inlcated by the arrows.
  • the tubes are arranged in vertical and horizontal rows. Those tubes which 0 en into an end box near the top of the box, t at is to say, nearest the drum E, extend to a point slightly beyond the middle of the drum where the are connected with the drum in suitable ori ces, the centers of those orifices for all the tubes in the uppermost row of tubes lying in the same vertical plane. Observed from the side, therefore, as in Fig. l, the ends of tubes appear to cross each other.
  • the next lower row of tubes opening into either end box extend still further beyond the middle of drum E, and the vertical portions of those tubes are in like manner secured in a row of orifices in the drum parallel to the row of orifices in which the first mentioned or uppermost row of tubes are secured.
  • each lower row of tubes extends further beyond the middle of the drum than the row of tubes next above, and finally, the lowest row of tubes, and the longest, are connected with the drum E near the tops of the end boxes.
  • a water tube boiler the combination with the furnace grate, of a longitudinal steam drum, end boxes opening into the drum near the ends of the drum and arranged vortically, the body of said end boxes being constructed greater in width than the diameter of the drum, bent tubes arranged lengthwise bclow the drum and each having a horizontal portion connected with an end box and a ver tical portion connected with the drum, and each of said tubes having a portion extending above the furnace grate, substantially as shown and described.

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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

W. DOUGHERTY & C. Y. JAMES. WATER TUBE BOILER.
APPLICATION FILED JULY 1a, 1007.
902,951. Patented Nov. a, 1908.
2 TS-BHEET 1.
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W. DOUGHERTY 6: G. Y. JAMES.
WATER TUBE BOILER.
APPLICATION FILED JULY 18, 1907.
Patented Nov. 3, 1908.
TIE:- E
WILLIAM DOUGHERTY AND OARLETON Y. JAMES, OF CHESTER, PENNSYLVANIA.
WATER-TUBE BOILER.
Specification of Letters Patent.
Patented Nov. 3, 1908.
Application filed July 18, 1907. Serial No. 384,316.
To all whom it may concern:
Be it known that we, WILLIAM Docen- ERTY and CARLETON Y. JAMES, citizens of the United States, residin at Chester, in the county of Delaware and State of Pennsylvania, have invented certain new and useful Improvements in Water Tube Boilers, of which the followin is a specification.
Our invention re ates to water tube boilers, and has for its object the production of a steam generator of the class in which the water is heated in tubes directly exposed to the burning furnace ases, those tubes having special form an particular arrangement whereby it is believed that greater economy of construction is attained, and leaking at the joints of the tubes with the end boxes and drum under expansion while steaming prevented.
lVe accomplish the stated object by fashioning and associating the parts as illustrated in the accompanying drawings, of which Figure 1 represents a vertical section lengthwise, and Fig. 2 shows an end view partly in vertical section.
Like reference letters are used to designate like parts throughout the specification and drawings.
In the drawings the furnace grate is marked A, the front of the boiler setting is designated by the letter B and the back by C. The bridge wall is referred to by the letter D.
The longitudinal drum of the boiler is designated E, and is in 0 on communication with the front end box I and the rear end box G as is customary.
The tubes H and J have substantially the same form. That is to say, each has a substantially horizontal straight portion opening into an end box, and a vertical portion openmg into the drum. In addition to those features the outer-lying tubes J curve laterally lnward at the top for their connections with the drum, as shown in Fig. 2.
Suitably placed bafile plates K and L erected upon the brid e wall, and like horizontal and vertical ba e plates M and N direct the products of combustion from the grate bars through the system of tubes as inlcated by the arrows.
It will be observed that in the construction constituting our invention, the relatively horizontal portions of the tubes have each a slight upward inclination from the end box to which it is attached.
The tubes are arranged in vertical and horizontal rows. Those tubes which 0 en into an end box near the top of the box, t at is to say, nearest the drum E, extend to a point slightly beyond the middle of the drum where the are connected with the drum in suitable ori ces, the centers of those orifices for all the tubes in the uppermost row of tubes lying in the same vertical plane. Observed from the side, therefore, as in Fig. l, the ends of tubes appear to cross each other. The next lower row of tubes opening into either end box, extend still further beyond the middle of drum E, and the vertical portions of those tubes are in like manner secured in a row of orifices in the drum parallel to the row of orifices in which the first mentioned or uppermost row of tubes are secured. In regular, spaced order, each lower row of tubes extends further beyond the middle of the drum than the row of tubes next above, and finally, the lowest row of tubes, and the longest, are connected with the drum E near the tops of the end boxes.
In any tube there is but a single turn, and that is made a gradual bend. The result is an extremely rapid circulation in the tubes, so rapid, in fact, as to practically eliminate the deposit of scale therein, and to materially increase the amount of steam generated in a given time beyond the steaming capacity of water tube boilers in the same general class with which we are acquainted.
Having now described our invention and explained the mode of its operation, what we claim is In a water tube boiler, the combination with the furnace grate, of a longitudinal steam drum, end boxes opening into the drum near the ends of the drum and arranged vortically, the body of said end boxes being constructed greater in width than the diameter of the drum, bent tubes arranged lengthwise bclow the drum and each having a horizontal portion connected with an end box and a ver tical portion connected with the drum, and each of said tubes having a portion extending above the furnace grate, substantially as shown and described.
In testimony whereof we allix our signatures in presence of two Witnesses.
WILLIAM DO UGllE It T Y. (JARLETON Y. JAMES.
Witnesses KlNesLnr MONTGOMERY, GERTRUDE HOWARD.
US38431607A 1907-07-18 1907-07-18 Water-tube boiler. Expired - Lifetime US902951A (en)

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US38431607A US902951A (en) 1907-07-18 1907-07-18 Water-tube boiler.

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US38431607A US902951A (en) 1907-07-18 1907-07-18 Water-tube boiler.

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US902951A true US902951A (en) 1908-11-03

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