US1821868A - Distributor for pulverized fuel - Google Patents

Distributor for pulverized fuel Download PDF

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Publication number
US1821868A
US1821868A US416619A US41661929A US1821868A US 1821868 A US1821868 A US 1821868A US 416619 A US416619 A US 416619A US 41661929 A US41661929 A US 41661929A US 1821868 A US1821868 A US 1821868A
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Prior art keywords
distributor
pulverized fuel
fuel
chamber
whirling chamber
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US416619A
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Yarrow Harold Edgar
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00—Feeding arrangements
    • F23K2203/006—Fuel distribution and transport systems for pulverulent fuel

Definitions

  • the object of this invention is to provide means whereby pulverized fuel from a single pulverizer and its conveying or primary air may be distributed substantially equally be- -31 tween two or more discharge points.
  • the pulverized fuel and conveying air are discharged downwardly through a conveying trunk or pipe upon a substantially horizontal plate or disc contained in a closed casing and having preferably a concave surface, over the edges of which the fuel spills evenly and thence passes inwardly between deflecting vanes into a whirlin chamber leading to a receiving chamber having a plurality of 7 equal and equally spaced discharge outlets.
  • the result of the gyratory movement imparted to the fuel mixture by the inclined or curved deflecting vanes is that the mixture is distributed P1) evenly around the inside of the receiving chamber and each of the outlets gets an equal supply of fuel.
  • Fig. 1 is a vertical section of a multiple dis-.
  • Figs. 2 and 3 are transverse sections on lines 22 and 33 respectively of Fig. 1.
  • A is the air trunk or pipe into which the pulverized fuel and its conveying air are delivered at considerable velocity from the pulverizer or by means of a primary air fan from a store of already pulverized fuel, and from which it passes to the multiple distributor which consists of a cylindrical casing H having access hand-holes V spaced around its periphery.
  • a conical whirling chamber 1 formed of a ring of inclined defleeting blades or vanes C which rest on an internal flange at the bottom of the cylindrical casing H and have their upperends fixed to a steel saucer-shaped plate B.
  • a receiving chamber F which may be in the form of an inverted cone and which has equally spaced around it a plurality of identical discharge outlets G, which may be provided with suitm able valves to close down or regulate the fuel mixture issuing from them.
  • the quantity of fuel passing. through the distributor may be regulated by means of an annular diaphragm E provided with operating rods extending through the top of the distributor, whereby it can be moved upwards or downwards.
  • a distributor for pulverized fuel comprising a whirling chamber into which the mixture of pulverized fuel and its conveying air is discharged, means for distributing the fuel substantially uniformly around the outer region of the whirling chamber, fixed deflecting vanes separating the outer from the inner region of the whirling chamber, a receiving chamber located below and communicating with the inner region of the whirling chamber and provided with a plurality of equally spaced discharge outlets.
  • a distributor for pulverized fuel comprising awhirling chamber, means for del vering fuel in a substantially even stream to said whirling chamber, said whirling chamber being provided with a substantially horizontal deflector plate upon-which the fuel mixture is discharged and over the edge of which it falls in a substantially even stream around the outer region of the whirling chamber, and the said deflector plate being'provided with deflecting vanes between which thefuel stream passes into the interior of the whirling chamber, and a receiving chamber located below and communicating with said whirling chamber.

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

Description

Sept. 1, 1931. H. E. YYARROW 1,821,868
DISTRIBUTOR FOR PULVERIZED FUEL Filed Deb. 26, 1929 Imam-6R Ha'mld Yarrow ATTORNEY Patented Sept. 1, 1931 PATENT OFFICE,
HAROLD EDGAR YARROW, OF SCOTSTOUiN', SCOTLAND DISTRIBUTOR FOR PULVERIZED FUEL Application filed December 26, 1929, Serial No. 416,619, and in Great Britain November 13, 1929.
The object of this invention is to provide means whereby pulverized fuel from a single pulverizer and its conveying or primary air may be distributed substantially equally be- -31 tween two or more discharge points.
According to this invention the pulverized fuel and conveying air are discharged downwardly through a conveying trunk or pipe upon a substantially horizontal plate or disc contained in a closed casing and having preferably a concave surface, over the edges of which the fuel spills evenly and thence passes inwardly between deflecting vanes into a whirlin chamber leading to a receiving chamber having a plurality of 7 equal and equally spaced discharge outlets. The result of the gyratory movement imparted to the fuel mixture by the inclined or curved deflecting vanes is that the mixture is distributed P1) evenly around the inside of the receiving chamber and each of the outlets gets an equal supply of fuel.
One embodiment of the invention is illustrated in the accompanying drawings, wherein Fig. 1 is a vertical section of a multiple dis-.
tributor, and Figs. 2 and 3 are transverse sections on lines 22 and 33 respectively of Fig. 1.
In these drawings A is the air trunk or pipe into which the pulverized fuel and its conveying air are delivered at considerable velocity from the pulverizer or by means of a primary air fan from a store of already pulverized fuel, and from which it passes to the multiple distributor which consists of a cylindrical casing H having access hand-holes V spaced around its periphery.
Inside the cylinder is a conical whirling chamber 1) formed of a ring of inclined defleeting blades or vanes C which rest on an internal flange at the bottom of the cylindrical casing H and have their upperends fixed to a steel saucer-shaped plate B.
Below the whirling chamber D is a receiving chamber Fwhich may be in the form of an inverted cone and which has equally spaced around it a plurality of identical discharge outlets G, which may be provided with suitm able valves to close down or regulate the fuel mixture issuing from them.
The quantity of fuel passing. through the distributor may be regulated by means of an annular diaphragm E provided with operating rods extending through the top of the distributor, whereby it can be moved upwards or downwards.
Having thus described the nature of the invention and the best means I know of carrying the same into practical effect, I claim 1. A distributor for pulverized fuel, comprising a whirling chamber into which the mixture of pulverized fuel and its conveying air is discharged, means for distributing the fuel substantially uniformly around the outer region of the whirling chamber, fixed deflecting vanes separating the outer from the inner region of the whirling chamber, a receiving chamber located below and communicating with the inner region of the whirling chamber and provided with a plurality of equally spaced discharge outlets.
2. A distributor for pulverized fuel comprising awhirling chamber, means for del vering fuel in a substantially even stream to said whirling chamber, said whirling chamber being provided with a substantially horizontal deflector plate upon-which the fuel mixture is discharged and over the edge of which it falls in a substantially even stream around the outer region of the whirling chamber, and the said deflector plate being'provided with deflecting vanes between which thefuel stream passes into the interior of the whirling chamber, and a receiving chamber located below and communicating with said whirling chamber.
3. A distributor for pulverized fuel according to claim 2, wherein the substantially horizontal deflecting plate is concave or cupped on its upper side.
r 'In testimony whereof I have signedv my name to this specification.
HAROLD E. YARROWV.
US416619A 1929-11-13 1929-12-26 Distributor for pulverized fuel Expired - Lifetime US1821868A (en)

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GB1821868X 1929-11-13

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1149127B (en) * 1958-11-29 1963-05-22 Maschf Augsburg Nuernberg Ag Device for distributing a coal dust-air mixture flow to several branch lines
DE1172794B (en) * 1959-12-08 1964-06-25 Maschf Augsburg Nuernberg Ag Coal dust-air mixture distributor for ceiling burners of coal dust firing systems
DE1257055B (en) * 1962-04-05 1967-12-21 Babcock & Wilcox Co Device for distributing pneumatically conveyed material in particle form to a plurality of consumer locations
EP0206137A2 (en) * 1985-06-20 1986-12-30 ASEA STAL Aktiebolag Method for drying, crushing and distribution of solid fuel for a solid fuel boiler

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1149127B (en) * 1958-11-29 1963-05-22 Maschf Augsburg Nuernberg Ag Device for distributing a coal dust-air mixture flow to several branch lines
DE1172794B (en) * 1959-12-08 1964-06-25 Maschf Augsburg Nuernberg Ag Coal dust-air mixture distributor for ceiling burners of coal dust firing systems
DE1257055B (en) * 1962-04-05 1967-12-21 Babcock & Wilcox Co Device for distributing pneumatically conveyed material in particle form to a plurality of consumer locations
EP0206137A2 (en) * 1985-06-20 1986-12-30 ASEA STAL Aktiebolag Method for drying, crushing and distribution of solid fuel for a solid fuel boiler
EP0206137A3 (en) * 1985-06-20 1988-01-13 ASEA STAL Aktiebolag Method for drying, crushing and distribution of solid fuel for a solid fuel boiler

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