CN2086376U - Multi-layer combustion chamber type briquette boiler - Google Patents

Abstract

A multi-layer combustion chamber type coal boiler is characterized in that a multi-layer combustion chamber and corresponding coal feeding and slag discharging channels are arranged in a coal-fired furnace body in a layered mode. Compared with the existing boiler, the utility model has the advantages of high thermal efficiency, fast water boiling speed, large steam output, continuous and strong firepower guarantee.

Description

Multi-layer blast chamber formed coal boiler

The utility model relates to a kind of boiler, especially a kind of multilayer combustion chamber-type molded coal boiler.

In order to reduce environmental pollution, promote the use of moulded coal, the boiler that Chinese utility model patent discloses a kind of burning briquette No. 89213082.2.This boiler is made of jointly be filled with water drum and coal-fired body of heater, and coal channel is advanced in the combustion chamber one side setting of coal-fired body of heater, and opposite side is provided with slag releasing channel, slag notch double as air inlet, and the top of combustion chamber is connected with the flue that runs through the drum cylindrical shell.This utility model boiler thermal output is higher, and has solved the problem of boiler burning briquette preferably, helps environmental protection.But, because the combustion chamber individual layer of this boiler is provided with, when needing more greatly than vigorous fire power, if add a large amount of moulded coals for satisfying the mode that the firepower needs stack with multilayer when boiler is big, the amount of heating up water is more, the then possible incomplete phenomenon of generating unit somatotype coal combustion, the thermal efficiency of reduction boiler.Therefore, this boiler still has certain defective.

The utility model purpose provides that a kind of amount of heating up water is big, the speed of heating up water fast, moulded coal burns boiler completely.

Boiler of the present utility model improves on the basis of above-mentioned existing molded coal boiler.In the utility model, the individual layer combustion chamber with above-mentioned boiler changes the multilayer combustion chamber into especially, and relative set be connected with each layer combustion chamber respectively advance coal channel and slag releasing channel.For ease of burning briquette, each layer combustion chamber is interconnected up and down, with grate the levels combustion chamber separated, and the combustion chamber of the superiors is connected with the flue that runs through the drum cylindrical shell.When using boiler of the present utility model, fire coal pushes each layer combustion chambers burn respectively by the coal channel that respectively advances that is connected with each layer combustion chamber respectively, and the recrement that burns is discharged by each slagging channel.In moulded coal when burning,, each slag notch is air inlet, and the flue gas that produces when being positioned at the fired coal combustion of lower floor combustion chamber comes together in the flue discharge by the moulded coal of its combustion chamber, top and the gap of sidewall of combustion chamber.In boiler of the present utility model, owing to be provided with the multilayer combustion chamber, compare with original boiler, fundamentally eliminate the imperfect combustion phenomenon when the coal cinder multilayer is overlapping burns, thereby improved the thermal efficiency of boiler.In addition.The multilayer moulded coal owing to can burn simultaneously in body of heater, firepower is vigorous, can accelerate the speed of heating up water, and increases the amount of heating up water and steam quantum of output, therefore can be made into the steam boiler of burning briquette, enlarges the range of application of molded coal boiler.After the multilayer combustion chamber is set in the body of heater, also can improve boiler attendance, make staggered the carrying out of coal process of each layer combustion chamber, avoid occurring because of coal makes the phenomenon that firepower reduces suddenly in the body of heater, thereby guarantee to have continuous, vigorous firepower all the time in the boiler body.These characteristics of the utility model boiler, above-mentioned existing molded coal boiler and the existing coal burning boiler that looses do not possess.In addition, in the utility model boiler, for a large amount of heats that further utilize multilayer burning indoor coal burning to produce, accelerate the speed of heating up water and increase the steam quantum of output, also especially between combustion chamber and drum madial wall and the horizontal short side in the body of heater upwards be provided with the interlayer that is filled with water respectively.The interlayer that is filled with water that is arranged at drum madial wall place is thinner, and it is filled with water with drum only has slot to be connected between the layer.This slim interlayer is because of near the combustion chamber, be easy to absorb the heat of combustion chamber, its heating surface area is big and the amount of being filled with water is few in addition, with only being arranged again between the drum, slot communicates, the water of splendid attire is difficult for carrying out heat exchange quickly with the water of the interior splendid attire of drum in the interlayer, therefore being filled with water in the interlayer to heat up is exceedingly fast, and can reach boiling, vaporization very soon.The pressure that is filled with water in the interlayer after boiling, the vaporization increases, and enters the drum layer that is filled with water from the connection slot than top by force, and be filled with water lower temperature water in the layer of drum replenishes from the connection slot than the bottom and gives slim interlayer.In boiler is heated up water process, this process will continue to carry out, and promptly high-temperature water enters drum from interlayer, and water at low temperature enters interlayer from drum.This process makes water body generation disturbance in the drum, helps promoting the heat exchange of hydrone, improves the thermal efficiency of boiler.In the utility model, the above-mentioned interlayer that is filled with water can be one deck, also can be multilayer.In addition, because the water temperature in the above-mentioned interlayer that is filled with water is higher, it is also corresponding higher that interlayer is positioned at the side wall temperatures of combustion chamber one side, therefore after between combustion chamber and drum sidewall, slim interlayer being set, even traditional thermal insulation fire-resistant material layer no longer is set in the combustion chamber, can not occur crossing the low phenomenon that influences burning because of the combustion chamber side wall temperature yet.Thereby both can exempt the setting and the maintenance of thermal insulation fire-resistant material layer, can make full use of the heat of combustion chamber again.In the utility model, the interlayer that is filled with water of horizontally set is a kind of improvement to the horizontal water tube of existing boiler in body of heater.This improved purpose is to increase heating surface area, accelerates the speed of heating up water.Interlayer and the drum layer that is filled with water that laterally is filled with water directly is communicated with, directly roasted by the combustion chamber firepower to be filled with water in the interlayer of heating rapidly with drum in be filled with water and carry out thermal convection current, and can be after boiler water seethes with excitement raising steam quantum of output.The flow blocking piece that can be crisscross arranged in this interlayer utilizes it to increase the current disturbance, promotes heat exchange.In the utility model, the interlayer that laterally is filled with water can be provided with a plurality of, and can utilize the interlayer that laterally is filled with water as the combustion chamber of layering setting and advance the separate layer of coal, slag releasing channel, make it both to play the effect that makes full use of heat, accelerates the speed of heating up water and increase steam quantum of output, play the auxiliary effect that constitutes the multilayer combustion chamber again.

Boiler of the present utility model is compared with existing molded coal boiler, has thermal efficiency height, the speed of heating up water is fast, the steam quantum of output big, can guarantee characteristics continuous, vigorous firepower.

Boiler of the present utility model illustrates further in conjunction with the embodiments.

Fig. 1 is the structural representation of boiler among the embodiment.

Fig. 2 is the A-A cutaway view.

Fig. 3 is the B-B cutaway view.

Fig. 4 is the C-C cutaway view.

Shown in Fig. 1-4, the boiler of present embodiment has preheating hydroecium 1, boiling water chamber 2 and hot hydroecium 3.In boiler furnace, be provided with two-layer combustion chamber, i.e. upper combustion chamber 4 and lower combustion chamber 8 up and down.Simultaneously, corresponding with upper combustion chamber 4, be provided with enterprising coal channel 5, go up slag releasing channel 6 and grate 7.Corresponding with lower combustion chamber 8, be provided with down coal channel 9 and following slag releasing channel 10.In the present embodiment, grate 7 is separated upper and lower combustion chamber.For ease of advancing coal and deslagging, grate 7 is extended to the outlet of the inlet and the last slag releasing channel 6 of enterprising coal channel 5, make it the slide rail that double as advances coal and deslagging.Under lower combustion chamber 8 reaches, advance in coal, the slag releasing channel 9,10, also be provided with into coal, the slide rail 11 of slagging tap.In addition, the top of upper combustion chamber 4 is connected with the flue 12 that runs through the drum cylindrical shell.But in flue 12, be provided with the smoke barrier 13 of prolong smoke holdup time and the control fire valve 14 of turnover panel form.In the present embodiment, between combustion chamber 4,8 and hot hydroecium's 3 madial walls, be provided with the slim interlayer 15 that is filled with water, between be filled with water interlayer 15 and the hot hydroecium 3 by last connection slot 16 be communicated with slot 17 down and be connected.Simultaneously, in body of heater, also be respectively arranged with four groups of interlayers 18,19,20,21 that laterally are filled with water that are connected with hot hydroecium, the upper and lower combustion chamber of the interlayer 18 double as layering settings that wherein laterally are filled with water and advance the separate layer of coal, slag releasing channel.In each laterally is filled with water interlayer, be provided with flow blocking piece 22.In the porch of advancing coal channel, be provided with closing door 23.

Claims (3)

1, multilayer combustion chamber-type molded coal boiler, constitute jointly by drum and coal-fired body of heater, coal channel is advanced in one side setting of coal-fired combustion chamber of furnace body, opposite side is provided with slag releasing channel, it is characterized in that layering be provided with at least two combustion chambers (4), (8) and be connected with each layer combustion chamber respectively enter coal channel (5), (9) and slag releasing channel (6), (10), upper and lower being connected between the combustion chamber (4) that layering is provided with, (8), separated mutually by grate (7) therebetween, the combustion chamber (4) that is positioned at topmost is connected with the flue that runs through the drum cylindrical shell (12).

2, molded coal boiler as claimed in claim 1, it is characterized in that being filled with water at combustion chamber and drum is provided with the slim interlayer that is filled with water (15) between layer (3) madial wall, and the slim interlayer that is filled with water (15) is filled with water with drum and is connected by slot (16), (17) between layer (3).

3, molded coal boiler as claimed in claim 1 or 2 is characterized in that being horizontally arranged with in body of heater and the drum interlayer that laterally is filled with water (18), (19), (20), (21) that layer (3) is connected that are filled with water.

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