US1997441A - Fuel distributor - Google Patents

Description

April 9, 1935. E, A. TURNER FUEL DISTRIBUTOR Filed May'9, 1930 INVENTOR April 9, 1935.

, E. A. TURNER FUEL DISTRIBUTOR Filed May 9, 1930 2 Sheets-Sheet 2 y IN VEN TOR i other and further objects Patented lApr. 9, 1835 Edwin arch 'rum to The standardk stok a corporation of application Mays, 1930, serial No. 450,891

5 claims; (c1. 11e-101) s,` and more invention yparticularly to the lThe principal object of multaneously distributing the fuel `to all parts of the flrebo A further object of sion of a new thereon.

A still further object of the invention is the mechanism that is simple pensive tomanufacture, economical in operation.

theinvention will appear from panymgdrawings, in which l Fig. `1 is acentral,v longitudinal v'section ofa lo-V invention in n away; sectionon line 2"-2 `of Fig. 1;` s

the device 'when emotive and 'Stoker with the tion thereon, parts being broke Fig.2 is a Fig. 3 isa viewed from front elevation of within the nrebox;

and

ing the means ber in position.

In'` the use of stokers employing steam jets 'for over the grates of :the nrehas been experienced in` distributing the fuel evenly-over the firebed for'the reason that it is common practice to use the boiler. In i s i of fuel, theparticles are of all sizes,` and where crushers are commonly employed for reducing the size of the same and lresults in the fuel I. being box, great difllculty of mine coal inflring large lumps occur coal the crushing process lumpsbeing heavier force to project them further` end of the` project practically the inventio relates to stoker distributing mechanism. s y

the invention is the grades; and for sidiiferentgrades of in construction, inex- `designates generally .and that iseflicientfand and advantages of 1 theA following description-ftalreninl connectionV with the accom- Fig-1 1s a. section 'on' broken line 4-'4 or Fig. 1;

rig. sis a section Online 5 5 of Fig. 2, showfor securing the distributor mem-` require considerably` more to the further endjof the rebox than the pulverized material or the lumps of smaller size. A force, therefore, necessary to Dmject any of the larger lumps of fuel to the rebox would be such'astoV all the `pulverized and `smaller n is the proviand improved fuel distributor member having a novel arrangement of steam jets FUEL nrsrluinrron4 er, NewYork, N. Y., assigner'V er Company. Incm'lm-` Delaware1 lumps to the further endof the ilreboxfand a result the fuel would be distributed unevenly over the rebed.

tially evenly over the entire iirebed.

For convenience of description and simplicity in illustration,` the invention is disclosed as be-` ing applied toa locomotive, but it is understood that the device is equally as applicable to stokers for other types of boilers.

, Referring now to `the drawings, numeral I0 box II providedwith `a backwall I2 andgrates I3. The backwall is provided with the conventional flredoor.` opening Il Since `the 'speciflc features ofthe locomotive constitute no `part of the presenttinventlon, it is not thought necessary y toffurther describe or. illustrate the same.

posi-y` lally by the reference numeral' I for conducting fuel from the tender, to the firedoor K `nism comprises a conduit I 6 terminating atI its forward end in a riser conduit II having a removable cap` I8 thereon; adistributor plate I9, and a vdistributor member fuel forwardly,uas will presently appear.

The distributor plate I9 fits into a recess in flooror bottom wall of the forward end of the riser conduit and `is secured thereinlby bolts 22 engaging tapped holes in the flange 23 and seated in recesses `24 in the oor of said riser con-- `.iuit, see Fig. 2. The forward end of this plate extends `into the firebox and is provided with curved channels 25 `andcurved` abutments `o`r abutment flanges 26 for vdirecting fuel `into the rear corners of the ilrebox. ,s i

The distributor member `2l comprises a body portionw2l which may be and preferably is rec-- tangular atits rear end for engaging inra correspondingrecess in theforwardportion ofthe 5,"is employed a` source of .supply, as

the run this type floor ofthe riser conduitfll,` see Figs. 1 `and 2. l,

a locomotive having a -lire-y `Suitable stoker mechanism, designated generi opening. Thismecha- 2| for projecting the ized fuel from the coarser or lump fuel. In the form of construction selected to illustratev one embodiment of the invention the fuel is separated into three main classes, graded as to size. It is understood that this is by Way of example only and that the principle employed may be extended for obtaining any desired number of classes grad-- ed as to the diameter of the material.

As shown, the body portion`21 is provided with a plurality of sets of forwardly extendingl projections or fingers 3| and 32. For the purpose of disclosure, only two sets of these projections are shown. ngers 32 and extend forwardly beyond the same. The ends of the fingers 3| terminate in a plane above and forwardly of the fingers or projections 32 `whereby the steam passages extending through said fingers 3| will be above those extending through the fingers 32 for distributing the different sizes of fuel as will presently appear.

Both sets of fingers or projections may be and preferably are arranged radially wherebymthe fuel will be directed to all parts of the fireboxf4 The body of the distributor -member 2| `is provided with a plurality of steam chambers or headers 33, 34 and 35, three being shown. Preferably they are arranged one above the other. Their front wall is arcuate and suitable jet openings are provided through this front for eaclr chamber. The jet openings 36 for the lowest chamber 35 extend through the wall below the yplane of the fingers 32 while the jet openings 31 and 38 for the chambers 33 and 34 `extend through the fingers 3| and 32 respectively.

- Suitable means are provided for supplying steam at different pressures to the steam chambers. Since the least amount of steam pressure is required for projecting the finer particles forwardly, and the greatest amount for distributing the largest particles or lumps, the lowest chamber 35 is supplied 'with steam at the lowest pressure, the chamber 33 with steam at the highest pressure and the chamber 34 with steam at an intermediate pressure.

For convenience of description the chamber 33 will be referred to a: the high pressure chamber, the Ychamber 34 as the intermediate pressure chamber, and the chamber 35 as the low pressure chamber.

Steamis supplied to the chambers 33, 34 and 35 by the pipes 4|, 42 and 43 respectively. Valves 44, 45 and 46 may be provided in the pipes 4|,`42 and 43 respectively for controlling the amount of steam supplied to the respective chambers.

The upper surfaces' of the fingers slope downwardly and forwardly for facilitating the movement'of the fuel thereover. f

In the operation of the stoker, fuel is fed by the stoker mechanism onto the distributor member 2|, pushed over the body 21 of the distributor member which may be curved to facilitate the passage lof the fuel thereover, and forced forwardly .onto the fingers. The pulverized and vfiner particles of fuel fall. down between the fingers and be projected forwardly and laterally by the steam jets3l.: The intermediate sizelumps will be forced forwardly over the outer ends of the ngers 32 and be distributed over the flrebed by the steam iets from the openings 31. Therlumps of fuel that are too large to pass down The fingers 3| alternate with theA l 1,997,441 that the fuel may be distributed to different parts between the fingers 3| are pushed forwardly by the oncoming fuel and fall in front of the steam jets issuing from the jet openings38 which distribute them evenly over the firebed.

The projection of the larger and intermediate lumps above the pulverized fuel will tend to form a blanket for preventing the finer particles of fuel from being caught by the draft and carried on to the stack.

A certain amount of fuel will, of course, be struck by the steam blasts in such a manner as to cause the same to strike the distributor plate and be directed by the' channels 25 and abutmentV members 26 into the rear corners of the rebox.

I claim: Y

1. In a stoker, a riser conduit, a distributor plate detachably connected to the wall thereof over which the fuel is discharged and extending forwardly therefrom, a distributor member having steam passages opening through its front wall seatedon the rear end of said plate, the aforesaid wall of saidriser conduit being provided with a recess for receiving the rear portion of said member, and means for detachably connecting said member to said plate with the rear end of said member in said recess.

2. In a Stoker, a riser conduit, a distributor plate detachably connected to the wall thereof over which the fuel is discharged and extending forwardly therefrom, va distributor member having steam passages opening through its front .wall seated on the rear end of"saidplate, the aforesaid wall of said riser conduit being provided with a recess for receiving the rear portion of said member, and means for detachably securing said member in said recess.

3. In a Stoker, a fuel distributor member when in operative position including; anrupstanding wall having an upper edge over which fuel drops in front of the wall, said front wall adjacent its lower edge having therein a transverse row of jet openings spaced between its ends, a transverse row of spaced ngers projecting forwardly from said front Wall in a plane above said transverse row of jet openings, and a. second transverse row of spaced fingers projecting forwardly from said front wall a greater distancethan and in` a plane above the first row of fingers, said upper row of fingers being staggered with respect to the lower row and providing vspaces therebetween, the upper surfaces of the ngers of both rows extending rearwardly to said upper edge of the front wall to form channels therewith between the fingers, each of said fingers having a jet opening therein, and said distributor member having internal chambers rearward of sail front wall apertured for the introduction of pressure fluid in communication with the jet openings of the fingers and of the front wall for the supply of pressure fluid thereto.

4. In a stoker, a fuel distributor member when in operative position including; a topwall constituting a fuel receiving fioor', a front wall extending downwardly from and transversely of said top wall at thedischarge edge thereof, said front wall adjacent its lower edge having therein a transverse-row of jet openings spaced between its ends, a transverse row of spaced finbeing staggered with respect to the lower row and providing spaces therebetween, the upper` surfaces of the fingers of both rows extending rearwardly to the discharge edgeof said top wall to form channels therewith between the fingers, each of said ngers having a jet opening therein, and said distributor member having internal chambers apertured for the introduction of pressure fluid in communication with the jet openings of the fingers and vof the front wall for the supply of pressure fluid thereto.

5. In a stoker, a fuel distributor member when in operative position including: an upstanding wall having an upper edge over which fuel drops in front of the wall, said front wall adjacent its lower edge being apertured transversely between its ends to discharge pressure fluid forwardly in an approximately horizontal plane, a transverse first row of ngers, said upper row of fingers being staggered with respect to the lower row and providing spaces therebetween, the upper surfaces of the fingers of both rows extending rear- Wardly to vsaid upper edge of the front wall to form channels therewith between the fingers, each of said fingers having a jet opening therein, and said distributor member having internal pressure fluid supply chambers in communication with the jet openings of the fingers and with the rst named apertured portion of said front `wall for the supply of pressure uid thereto.

E. ARCHER TURNER.

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