US2095950A - Fuel distributor - Google Patents

Description

Oct. 19, 1937. H. P. ANDERSON FUEL DISTRIBUTOR 2 Sheets-Sheet 1 Filed Nov. 13, 1935 INVENTOR. Howard P Andewon ATTORNEY.

Oct. 19, 1937. H. P. ANDERSON 2,095,950

FUEL DISTRIBUTOR Filed Nov. 13, 1935 2 Sheets-Sheet 2 9- 2 I INVENTOR. Howana FA/vdemon ATTORNEY.

Patented Oct. 19, 1937 UNITED STATES FUEL DISTRIBUTOR Howard P. Anderson, Erie, Pa., assignor, by mesne assignments, to The Standard Stoker Company, Inc., a corporation of Delaware Application November 13, 1935, Serial No. 49,484

4 Claims.

This invention relates generally to fuel distributing means for boiler furnaces and more particularlyto fuel distributing means for locomotive stokers.

The main object of the invention is to provide a novelfuel distributing means which will aiford greater flexibility in controlling the quantity of fuel delivered to desired areas of the firebed.

More specifically, it is an object of the invention to provide, in a fuel distributing system employing a pressure fluid head for projecting fuel over a firebed, auxiliary pressure fluid means arranged with the fuel distributing system to permit distributing more or less fuel to one part of the firebed than another, as desired.

With the above objects in view, the invention consists in the features of construction, the combination of elements and arrangement of parts hereinafter more fully described and claimed.

" In the drawings, v

Fig. 1 is a sectional plan view through a locomotive boilerfurnace andits firing opening with a portion of a stoker shownapplied to the firing opening in similar section;

'Fig. 2 is a sectional view on the irregular line 22 of Fig. .3; and

Fig. 3 is an enlarged horizontal section of the stoker and adjacent portions of the locomotive boiler shown in Fig. 1, parts being shown in eleva-' tion. a

'While the inventionis hereinafter described as applied to a locomotive boiler firebox, it will be obvious that the invention is equally applicable to fireboxes of other types.

A locomotive is indicated generally by the numeral l0 and comprises a firebox I I, having grates l2 and a boiler backwall l3 provided with a firing opening l4. Q A stoker discharge conduit 115 communicates :with the lower portion of the firing opening M.

Only so much of the stoker has been illustrated in the drawings as is necessary to a complete understanding of the invention. The discharge con charge conduit l5 projecting through the firing opening M. The dischargeconduit i5 is provided with an opening'2l through which access may be had to the interior thereof, and a cover 22 forms a closure for the opening 2 I.

Rearward of the distributor plate 24) and out--v The mouth portion I6 is side of the firebox is a vertically disposed distributor head 23 divided into a plurality of chambers, preferably, as shown in Fig. 3, a center chamber 24, leftand right side chambers 25 and 25, respectively, and left and right intermediate chambers 26 and 25', respectively. The forward face El of the distributor head 23 is provided with a plurality of jet openings communicating with the chambers in the head. Center jets 28 communicate with center chamber 24 and are directed across the longitudinal central portion of the firebox grate; the left and right side jets 29 and 29", respectively, communicate with the left and right side chambers 25 and 25, respectively, and are directed toward the left and right side portions, respectively, of the firebox grate; and, the left and right intermediatejets 38 and 30, respectively, communicate with the left and right intermediate chambers 2'6 and 26', respectively, and are directed toward the left and right front corners, respectively, of the firebox grate.

Fluid under pressure, preferably steam, is supplied to the chambers 24, 25, 25', 26 and 26' by supply pipes, 3|, 32, .32, 33 and 33, respectively, provided respectively with the control valves .34, 35, 35', 36 and 36. The fluid pressure blasts issuing from the jets project the fuel from the plate 210 into the firebox and scatter it over the grate. The plate .20 is provided at its forward corner portions with upstanding curved ribs 31, which intercept a portion of the fuel and direct it to the rear corners of the firebox. The combined blasts of pressure fluidissuing from the jet openings form a fan-shaped blast which, when the control valves are properly adjusted, cooperates with the ribs 31 to spread fuel uniformly over the entire grate. In practice, it is often necessary, due to uneven draft conditions or for other reasons, to temporarily deliver more fuel to one part of the firebox than another. This can to a certain extent be accomplished by adjustment of thecontrol valves 34, 35, 35', 36 and 36.

As hereinafter described, the present invention provides an arrangement whereby the fireman can set the fluid pressure distributor jets at a suitable pressure permitting them to spread fuel uniformly and then compensate for any unevenness in the firebed without resorting to changing the pressure of any of the distributor jets; This greatly simplifies the duties of the fireman.

Jet pipes 38 and 39 extend vertically, one through each rearward corner of the distributor plate 20 and are provided with jet openings 49 and M, respectively, in that portion projecting above the surface of the plate 20. Fluid under pressure is supplied to the jet pipes 38 and 39 from a suitable source by the supply pipes 42 and 43, respectively, provided with control valves 44 and 45, respectively, whereby fiuid under pressure may be supplied to one or both of the jet pipes or the supply of fiuid under pressure to both can be out off. Flexible pipe sections 42' and 43' connect supply pipes 42 and 43 with the jet pipes 38 and 1-f9,'respectively. j

The jet pipes 38 and 39 are provided beneath the plate with'arms 46 and 41, respectively, to the free ends of which are flexibly attached rods 48 and 49, respectively, that project through respective side walls .of the discharge conduit l5. 7

The free ends of the rods 48 and 49 are threaded and carry the adjusting knobs 50 and 5|, respectively, which, when turned, cause partial rotation of the jet pipes 38 and 39, permitting the a direction of the blast issuing from the jet openings 40 and 4| to change angularly with respect to a vertical plane passed through the longitudi- V nal center line of the firebox.

, the firebox. More fuel is also delivered to other parts of the left half of the firebox due to the fact that as the fuel is delivered onto the plate 23, more will roll over to the left side thereof since it is being projected morerapidly from that side. On

' the other hand, if it is found necessary to deliver slightly more fuel 'to the right half of the firebox, then the right auxiliary jet 39 is turned on and directed against the right rib 31. Considerably more fuel can be delivered to the left half of the firebox, however, by shutting off the left auxiliary jet 38 and pointing the right auxiliary jet 39 to the left so that the fluid pressure stream is directed diagonally across the plate 20.

r The direction taken by the coal will be governed by the resultant of the fluid pressure stream issuing from the distributor hea'd23 and the fluid pressure stream issuing from the right auxiliary jet. The resultant fluid pressure stream will obviously be directed more to the left half of the firebox and more fuel will be delivered to that side. If at the same time the left auxiliary jet is turned on and directed toward the left rib, the amount of coal delivered'to the left half of the firebox is increased. Similarly, by directing the left auxiliary jet diagonally across the plate 20 and cutting off the right auxiliary jet or directing it against the right rib, delivery oficoal W111 be heavier in the right half of the firebox.

Suppose now, that the auxiliary jets are ar-' ranged for heavier firing to the left half of the firebox: then any desired area of the left half of the firebox considered: lengthwise can be fired 1more'heavily by adjusting the right auxiliary jet so that the resultant of the fluid pressure streams ,issuingfrom the distributor head and the right auxiliary jetiwillbe'directed to that portion of the left half of the'firebox where the heaviest charge .of fuel is desired; The direction of the resultant fiuid pressure stream may also be varied by increasing or decreasing thefluid pressure of the auxiliary jet. My novel distributing device thus provides for delivering a heavier charge of fuel to one half of the firebox than the other and for delivering .a heavier charge to any desired area of that half of the firebox without disturbing the original setting of the distributor head jets.

I claim:

1. In a mechanical stoker, the combination of a firebox having a grate and an upright wall with a firing opening therein above the level of said grate, means for delivering fuel to said firing opening, a distributor plate arranged to receive fuel from said means, a distributor head at the rear of said plate, said head having a plurality of jet passages arranged for emission of fluid under pressure across said-plate for projecting fuel to all parts of said grate, means for altering the distribution of fuel to said grate including a jet member'mounted for rotation on a vertical axis at the side of said distributor head, said jet member having a jet passage arranged for the emis sion of fluid under pressure across said plate, said jet member being arranged so that the extended axis of the jet passage thereof will intersect the extended axis of at least one of the jet passages of said distributor head, and means for adjusting said jet member to any one of a number of positions about its vertical axis.

2. In a mechanical stoker, the combination of a firebox having a grate and an upright wall with a firing opening therein above the level of said grate, means for delivering fuel to said firing opening, a distributor plate arranged to receive fuel from said means, a distributor head at the rear of said plate, said head having a plurality of jet passages arranged for emission of fluid under pressure across said plate for projecting fuel to all parts of said grate, means for altering the distribution of fuelito said grate including a jet member at each side of said distributor head mounted for rotation on a vertical axis, said jet members each having a jet passage arranged for the emission of fiuid under pressure across said plate, said jet members being arranged so that the extended axis of each of the jet passages thereof will intersect the extended axis of at least one of the jet passages of said distributor head, means for independently operating said jet members, and means for independently adjusting each of said jet members to any one of a number of positions about its'respective Vertical axis.

3. In a mechanical stoker, the combination of a firebox having a grate and an upright wall with arfiring opening therein above the level of said grate, means for delivering fuel to said firing opening, a distributor plate arranged to receive fuel from said means, a distributor head at the rear of said plate, said head having a plurality of jet passages arranged for emission of fiuid under pressure across said plate for projecting fuel to all parts of said grate, a jet member at each side of said'distributor head mounted for rotation on a vertical axis, and means for adjusting each of said jet members to any one of a number of, positions about its vertical axis, said jet members each having a jet passage arranged for the emission of fluid under pressure across said plate, said plate having upstanding ribs curving inwardly, toward each other from the" forward corners of the plate and thence rearwardly for such a distance that the extended axis of ,a jet passage of a jet member will strike the concave sideof a diagonally opposite rib in at least one of its adjusted positions.

.4. In a mechanical stoker, the combination of a firebox having a grate and an upright wall with a firing opening therein above the level of said grate, means for delivering fuel to said firing opening, a distributor plate arranged to receive fuel from said means, a distributor head at the rear of and spaced inwardly of the sides of said plate, said head having a plurality of jet passages arranged for emission of fluid under pressure across said plate for projecting fuel to all parts of said grate, means for altering the distribution of fuel to said grate including a jet member at each side of said distributor head vary the angle between said intersecting pressure 10 fluid streams.

HOWARD P. ANDERSON.

Images