US1814787A - Gas producer - Google Patents

Description

July 1.4, 1931. DAAE 1,814,787

GAS PRODUCER Filed May 20, 1925 2 Sheets-Sheet 2 i i Patented July 14, I

NITED] STA nmnmnn'r DAAE, or younes'rown, OHIO T The present invention relates broadly to gas producers, and more particularly to con-,

trol mechanism for use therewith whereby the operating conditions obtaining within the I U producer may at will. I It has heretofore'been proposed in the art to which the presentfinvention relates to be automatically controlled provide gas producers having mechamsm ex-' 13 tending into the producer and operable in accordancewith variations in the level of the fuel therein for changing the rate of fuel feed to the producer. Such constructions,

however, have required special operating conl nections-with the poker, thereby, complicatingto some extent the producer construction. The present invention has for certain of its objects the production of a gas producer having controlling mechanism responsive to total 26- gas pressure variations within the producer for making such changes in the operating 'conditions as may be desir'ed.- In this mannerit is possible to provide-control mechanism entirely independent of the usual producer operating unit. r

In the accompanying drawings there is illustrated apreferred embodiment of the present invention, it being understood that the drawings do not define the limits of my invention, as changes in the construction and operation disclosedtherein may be made without departing either from the spirit of the inventionor. the scope of my broader claims. In the drawings: Figure 1 is aview partly in elevation and partly in section, and diagrammatically illustrating one embodiment'of the present invention;

I Figure. 2 is -'a diagrammatic vertical sectional view, certain of the parts being shown in elevation, of -the control motor and the operating motor;

Figure 3 is a detail vertical sectional View through the control Valve, the section being taken along the line III III of Figure 4;

Figuret is a detail vertical sectional view on the line IV -IV of Figure 3; Figure 5 is atop plan view of cover driving mechanism, and

Figure 6 is a vertical sectional view along Application filed May 20,

the producer This enables the effective stroke of-the lever ens :enonucn'a 1925. Serial. Nb. 31,523.) a k the line VIVI of Figure 5 looking inthe direction of the arrows.

- In carrying out the present invention there may be provided a gas producer of any de- -sired, construction.- In theaccompanying drawings the producer is illustrated as comprising a body portion 2. a top 3 and a grate 4. It iscustomary in gas producers to pro- [vide for relative movement between the producer body and the top and grate. .In the illustrated embodiment, the relative movement is accomplished by havinga stationary body with a rotatable cover and grate.

For rotating the cover there maybe pro- Vided a suitable driving mechanism, herein shown as comprisinga motor 5, the. shaft 6" of which carries a pinion 7 meshing with a gear 8 carried by one end of a shaft 9. The

opposite end of the shaft 9 carries a pinion 10 meshing with a gear 11 on a second shaft 12'. Intermediate its ends, the shaft 12- has secured thereto a worm 13 meshing with a worm wheell i keyed toa vertically extending shaft 15. This shaft in turn. drives a pinion 16 meshing with a ring gear 17 surrounding the cover 3. By reason of this construction it will be apparent that as the motor 5 is operated the cover 3 will be rotated, the

speed of rotation of the cover being extremely slow due .to the gear reduction between the motor and the cover.

The shaft 12 also has secured thereto an I ment about a shaft 22. This lever carries a pawl 23 adapted to engage a ratchet wheel 24 upon oscillation of the lever, to' thereby rotate the shaft 22, and in turn the shaft 25 with a ring gear 28 secured to the grate 4. The grate is mounted on suitable bearings 29 permitting free rotation thereof. The connection between the pitman 20 and the lever 21 may conveniently comprise a screw shaft 30' adapted to be turned by hand wheel 31.

and consequent speed of rotation of the grate "end to a lever 21 having an oscillating movethrough the worm-and worm wheel 26. The shaft 25 carries'a driving gear 27 meshing 5 ash receiving and sealing trough 33. Project- 1 ing downwardly into the trough is an adjustable ash plow 34 which may be of standard construction in which vertical adjustment is effected by means of a gear 35 with which meshes a gear 36 on ashaft 37. Or

dinarily this shaft is rotated by means of a hand wheel 38.

Secured to the opposite side of the eccentric band 19 is another pitman 39, the upper end of which is pivotally connected to a cross head 40 slidable in a slot 41 in one arm of a bell crank 42. This bell crank has a pivotal mounting 43, andits other arm is extended downwardly to operatively engage a frictional fuelfeeding plate 44 operable in the bottom ofa feed hopper 45 for feeding fuel therefrom below the adjustable gate 46 as well understood in the art.

The gate 46 is adapted to be adjusted vertically by a bell crank 47 pivotally connected to an operating link 48, the opposite end of which is connected to onefarm of a pivotally mounted bell (frank 49. "The cross head 40 is likewise. connected by a link 50 to an intermediate point of a lever 51 having at one end a pivotal mounting 52, and at its opposite end a pivotal connection with a link 53 extending substantially parallel to the link 48 and connected to one arm of a mounted bell crank 54.

Connecting the other arms of the respec:

pivotally r tive bell cranks 49 and 54 is a piston rod 55 projectingupwardly from a piston 56 of an operating motor, herein illustrated as conr-' prlsing a fluid pressure cylinder 57, adapted to raise and lower the rod 55. At an intermediate point therod 55 is pivotally connected to a lever 58 having a pivotal mounting 59 on a support 60 which also carries the bell cranks 49 and 54. The outer end of the lever 58 is pivotally connected to a link 61 extending downwardly to a crank arm 62 on a shaft 63. "This shaft carries a gear'64 meshing with a smaller gear 65 on a shaft 66,

- which shaft carries a. sprocket wheel around which passes a sprocket chain 67. This chain also passes around a second sprocket wheel on the shaft 37 for adjusting the plow 34.

The construction just described will be eifective upon movement of the rod 55 in one direction for rotating the gear '35 for raising the plowl to decrease the rate of ash removal from the trough 33, and effective upon movement in the opposite direction for lowering the plow to decrease the rate of ash removal Also carried by the support 60 may be an air main 68 anda steam main 69 for supplying air and steam respectively to the producer as well understood in the operation of gas producers. The 'airnlain is provided with a valve having an operating stem 70 connected to a walking lever 71, while the steam main is provided with a similar valve having an operating stem 7 2'connected to a walking lever 73. These two Walking levers in turn are pivotally connected to the piston rod 55. P

The producer is provided with the usual oii'take 74 for the gases generated therein. Communicating with the oli'take is a control motor herein illustrated as comprising a fluid pressure cylinder 75 having an inlet connection 76 and a piston 77 from which a piston rod 78 projects upwardly. This piston rod is normally urged downwardly by a light tension spring 79 surrounding the upper end of the rod and connected at one end to the rod and at its opposite end to the support 60. This piston rod carries a rack bar 80 meshing with a gear 81 on a valve shaft 82. The valve shaft carries a valve 83 within a casing 84, the casing having a pressure inlet 85, and the valve having a pressure balancing opening 86. j

The valve casing has a series of outlet connections 87, each connected by a conduit to an opening in the cylinder 57 .7 The valve has an outlet opening 88 adapted upon rotation of the valve to progressively communicate with the outlet connections 87. -As the rod 78 rises, the valve will be rotated in a clockwise direction, as viewed in Figures 2 and 3, to

bring the port 88 firstinto communication with the uppermost outlet" connection 87, which outlet communicates with the cylinder 57 at the lowest point of any of the outlets.

The piston 56 is provided with aport 89 communicating with the chamber below the piston by a passage 90. Normally, at the commencement of operation of the parts, the

operating piston 56 will be in its lowermost i position; At "this time the lowermost connection 87 will deliverfluid under pressure to the port 89 and thence to the lower end of the operating cylinder 57. This will result in raisin the piston 56 until such time as the skirt 92 cuts oif the further delivery of fluid. If the rod 78 continues to rise, the port 88 will be brought into registry successively with the outlet connections 87. This will result in a further upward movement of the piston 56. This operation will continue step by step so long as the piston 77 of the conto progressively restrict the. feed 'of steam Y and air to the producer through the open 54 by'such upward movement of the rod 55.

will result in movement of the lever 51 to the right, as viewed in Figure 1, thereby moving the cross head 40 outwardly in'the slot 41 to tions in the producer.

impart a relatively less movement to the bell crank 42.- This will .in turn diminish the fuel I.

feed. The bell crank 49- will be effective for lowering the gate 46 to restrict the feed of fuel, and the lever 58 will rotate the gear 35 in such direction as to raise the plow and decrease the spee'd of ash removal. I

The combined influence of the adjustments described will soon result in a decrease in the rate of gas generation in the producer. The control motor piston 77 will accordingly move downwardly. The, operating cylinder may have a regulablq fluidbleed 93 in its lower end to gradually bleed pressure therefrom. As the piston 77 moves downwardly, the valve 83 will be rotated-in a counter clockwise direction, and the connections 87 will be progressively cut off. This w'illpermit the operating piston 56 to gradually.

lower to its original position. This lowering movement may be assisted by any means such as a spring 94. As the piston 56 and rod 55. move downwardly, the reverse adjustment takes place with respect to 'the steam, a1r and fuel feed, and also the ash removal,

thereby again tending to promotegas generation.

It will lye understood that the control motor requires very little power for its operation, it being feasible, therefore, to operate it directly by Variations in pressure conditions within the gas producer. This control motor in turn brings an external source of power into play by means of which the operating motor is energized to an extent insuring movement thereof as required to effect the various ad ustments. With the 6 construction described, operating'conditio-ns within the producer may be automatically controlled by the total gas pressure condi- It will be understood that any desired form of 'fuel feed 95 may be provided-for the fuel delivered from the fuel feeding mechanism 44, and that a suitable poker 96 may also be utilized.

The control herein illustrated is adaptable for installations on standard gas producers, or may be built in ,as'an added feature on -new producers. I l

The advantages of the present invention arise from the provision of means for automatically and effectively controlling producer conditions in the producer.

air supplies, and an adjustable ash removing mechanism, a control -motdr responsive to total gas pressure in the producer,an operating motor controlled thereby, said control motor and operating motor being actuated by fluid at different pressures, and connections between said operating motor, said fuel feeding mechanism, saidsteam and air supplies, and said adjustable ash removing mechanism for adjusting the fuel feeding mechanism, the steam .and air supplies, and the ash removing mechanism in accordance with pressure variations within the. producer.

2. In a gas generating apparatus, an adjustable fuel feeding mechanism, steam and air supplies, an adjustable -waste material removing mechanism, fluid pressure means responsive to total gaseous pressure variations in the producer, a fluid pressure motor controlled by sa1d means, said fluid pres-.

sure" means and said fluid pressure motor being actuated by fluid at different pressures,

and means operated by 'said fluid pressure motor forvarying the effectiveness of said fuel feeding mecha'nismpsa'id steam and air supplies; and said ash removing mechanism:

in accordance with pressure variations With-r inthe produc r.

In com ination with a gas 7 producer having an adjustable fuel feeding. mechanism, steam and air supplies, and an adjustable -ash removing mechanism, a motor movable in response to fluctuations .inthe total gaseous pressure in the producer, and means controlled by the movement of said motor for adjusting said fuel fee-ding mechanism, said steam and air supplies, and said ash removing mechanism, said motor and said means beingactuated by fluid at different pressures. i

4. In combination with a gas producer having an adjustable fuel feeding mechanism, steam and air supplies, and an 'ash re- 1 ceiving trough and plow cooperating therewith, the plow being adjustable in a vertically extending direction in the trough, means responsive to fluctuations in the total gaseous pressure conditions in the producer,

and effective for causing adjustment of said fuel feeding mechanism, said steam and air supplies, and said plow.

6. In combination with a gas producer having adjustable means for supplying an ash forming fuel, steam and air supplies, and an ashremoving mechanism, a motor movable in response to fluctuations 1n the total gaseous pressure in the producer, and meansoperated by the movement of said motor for correspondingly varying the adjustment of the fuel supply means, the steam and air supplies, and the ash removing mechanism, said means being actuated by fluid at a higher pressure than said total gas pressure.

7. In a gas generating apparatus, an adjustable fuel feeding mechanism, steam and air supplies, an adjustable waste material removing mechanism, fluid pressure means responsive to total gaseous pressure in the apparatus, a fluid pressure motor, a separate source of operating fluid therefor, means controlled by said fluid pressure means for controlling fluid pressure from said source, and means controlled by said fluid pressure motor for varying the effectiveness of said fuel feeding mechanism, said steam and air I supplies, and said adjustable ash removing mechanism.

8. In combination with a gas producer having an adjustable fuel feeding mechanism, steam and air supplies, and an adjustable ash removing mechanism, a motor movable in response to fluctuations in total gasous pressure in the producer, a second motor controlled by said first motor, and means operated by the movement of said second motor for adjusting said fuel feeding mechanism, said steam and air supplies, and said ash removing mechanism, said second motor being actuated by a difierent source of-pressure than said first motor.

9. In combination with a gas producer having an adjustable fuel feeding mechanism, steam and air supplies, and an adjustable ash removing mechanism, a motor movable in response to fluctuations in total gaseous pressure in the producer, a second motor controlled by said first -motor, and means operated .by the movement of said second motor for adjusting said fuel feeding mechanism, said steam and air supplies, and said ash removing mechanism, said second motor comprising a cylinder and piston, and being actuated by a different means than said first motor.

In testimony whereof I have-hereuntoset my hand.

BEINHARDT DAAE.

Images