DE34006C - Innovation in steam boiler systems - Google Patents

Description

IMPERIAL

PATENT OFFICE.

. Fig. 1 of the accompanying drawing shows a vertical section through the center line AB of a ship's boiler, Fig. 2 is a horizontal section according to CD, Fig. 3 is a front view of the boiler tube and Fig. 4 is a vertical section of a fire tube for a fixed land boiler.

A is a main wind pipe, starting from any blower and leading to the front end of the boiler, α is a connecting pipe that connects A with the channel α α in the cast iron body B , a ¹ is a similar pipe that carries the air from A to Channel α ^λ a ^l leads, and α ¹ and a ^s are valves or stopcocks in the tubes a and α ^: to regulate the amount of air for the fuel in the combustion chamber C and for the gases behind the fire bridge c ¹ in the combustion chamber E. B ist a hollow base plate that extends from the front end of the boiler to the rear end of the furnace C ^x. It is in the middle through the walls b ² b ^s b * in two channels or air lines α α and λ. ¹ α ¹ divided. The channel α α leads to and is connected to the air box b, which is arranged at the rear end of the base plate B. b ^x is the nozzle through which the air is directed under the grate bars c, even into the closed ash trap C. The channel a ¹ a ¹ leads to and is connected (at d) with the air box D, through which the air flows upwards and into the heating ^{apparatus D l} . (D ¹ is only a part of D, although it is specially designated D ¹ for the sake of clarity.) From D ¹ the air reaches the combustion chamber E, into which it flows through the slot e behind the fire bridge c ¹ . The part of the air box D, which is called D ¹ , is not deep and has inside five vertical walls d ² to <f ^e , which form six channels through which the air flows in the direction of the arrows, Fig. 2, in order to then get to the compartment d ¹ and from there through the slit e to the combustion chamber E. In country boilers, a reciprocating pipe is used instead of the box D ¹ to heat the air.

On the upper side of the nozzle b ¹ a thin wall c ² of stones is built up, which forms the rear end of the combustion chamber C and the front part of the fire bridge. The bottom of the combustion chamber E is made of a thin layer of stone that rests on the upper side of D and D *. The rear grate bar c ^{15 also} rests on the nozzle b ^l .

F is a Kohlrenraum, formed by the usual front panel /, which is extended towards the fire, and an upper, shorter panel f ^l . The chamber E between the plates / and f ¹ has the purpose of preventing the gases from flowing out the front when fresh fuel is introduced into the combustion chamber. The fire door cabinet / ⁵ has the usual shape, but the fire door / ⁰ itself is provided with a door / ⁴ which, when not in use, is closed with a slider / ⁷ . G is a hanging door to close the ash fall, which is provided with hinges g and rotates around axis g ^x , which is attached to the front panel /. H is a door that also moves on the axis g ^l. I is a crossbar underneath

Claims (1)

the front plate / to which it is attached and serves as a support point for the chisels when working in the firebox, i is a bolt that rests in / and has the purpose of keeping door G in a raised position. K is a lever, provided with a nose, which is used to lock and unlock door G; succumbs protected in the channel b * of the base plate B. L is a channel which runs parallel to α α and opens into the air box b (at /), but is separated from the air which also flows into the box b . This channel is used to conduct steam from the boiler through the base plate B to the ash fall, where it flows out of the nozzle b ^{1 in addition to the air.} In certain cases the artificial draft is only used to burn the gases, not to produce them; rather, this is brought about by the natural drafts of air. In that case the branch pipe α, the channel α α, the box b with nozzle b ^l and the doors G and H are omitted, but in all other respects the device remains unchanged. Incidentally, it may be arranged as desired, the grate bars c are in all cases placed as deep as possible under the upper part of the fire bridge c ^l . In the device Fig. 4, the air flows into the box D (at d) and collects in the department -D ² , from where it flows through the pipe D " to the rear end of the boiler and then through the pipe D ^x into the Section D ^{3 of} the box D comes back to flow out at e into the combustion chamber E behind the fire bridge c ^1. Ai M are walls of stones which serve as supports for the tubes D ' and D " and as further fire bridges. The procedure for heating is as follows: The fire is lit in the usual way, while door G is kept open by means of bolt i. The front plates f and / ¹ are filled with as much fuel as they can hold. Once the fire has burnt out, the fuel required by the small Oeffhungy ⁴ is gestofsen in the Feuerthüry ⁶ from the chamber .FIN the combustion chamber C ^1, and until the upper surface of the hot coke is equal as long with the upper side of the Fire bridge c ¹ . When this is achieved, the door G is closed with the bolt K , as well as the small door H. Now air is slowly let out of the main pipe A, through the opening of the valve α ² into the branch pipe a, the channel α α and the ash chamber in which it flows in through the nozzle b ^l , thereby promoting gas generation; the gas reaches the combustion chamber E via the fire bridge e ^J. The valve a ³ may then be slowly opened, whereupon the air, after having passed through the branch pipe α \ the channel a ¹ a ', the box D and the air heater D ¹ , enters the combustion chamber E in the heated state through the slot e in order to mix there with the hot gases coming from the combustion chamber C ¹ and to generate the required high temperature for the boiler heating. Door G is opened periodically in order to remove the ash and slag, during which the valves α ² and a ³ must be partially or wholly closed. The poking is done through door H, but in this operation it is not necessary to shut off the fan. Not more than about half of the fuel on the front plate / should be pushed into combustion chamber C ^{1 at} one time, so that a sufficient quantity of it always remains on it to close the opening in F to prevent the gases from flowing out. The upper surface of the fire should be kept uniform everywhere and always at the level of the upper side of the fire bridge c ¹ . The grate bars can be placed very close to each other. Pate nt-Ans ρ ruch: In steam boiler furnaces the combination and installation of the parts / and f ¹ to form the gas-tight filling space F , the TrIeUeZ) -D ¹ , Fig. 1 and 2, and D ¹ D ' ² , Fig. 4, in order to produce the air heating apparatus, the base plate B, to convey the entire air and steam supply, and the hanging doors G and H and the crossbar /, the entire individual parts forming a whole, in order to achieve the stated purposes, all as described herein. 1 sheet of drawings.