CN213686762U

CN213686762U - Bent pipe heat exchange membrane type wall double-drum biomass generator

Info

Publication number: CN213686762U
Application number: CN202022654749.1U
Authority: CN
Inventors: 李宗华; 李鲁信
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-07-13
Anticipated expiration: 2030-11-17

Abstract

The double-drum biomass generator comprises a double-drum heat exchange device with a bent pipe heat exchange membrane wall and combustion equipment, wherein the double-drum heat exchange device with the bent pipe heat exchange membrane wall comprises two parallel left water pipes and a right water pipe which are arranged at the lower part, a plurality of left bent pipes with the same shape are connected to the left water pipe, a plurality of right bent pipes with the same shape are connected to the right water pipe, bent pipe heat exchange membrane walls are formed after the adjacent left bent pipes and the right bent pipes are sealed, the bent pipe heat exchange membrane walls are divided into a plurality of heat exchange chambers by taking the intersection points of the left bent pipes and the right bent pipes as boundaries, the heat exchange chamber at the lowest part is a combustion chamber, and the combustion chamber is communicated with the combustion equipment; the top of the heat exchange chamber at the uppermost end is provided with a boiler barrel A and a boiler barrel B, and the boiler barrel A and the boiler barrel B are sealed; and steam is output from the drum A and the drum B. This steam generator heat exchange efficiency is high.

Description

Bent pipe heat exchange membrane type wall double-drum biomass generator

Technical Field

The utility model relates to a living beings indirect heating equipment, in particular to living beings steam generator belongs to biomass boiler technical field.

Background

The biomass is made into a novel clean fuel which is formed (such as block, particle and the like) in various forms and can be directly combusted by taking agriculture, forestry and forestry wastes as raw materials through the processes of crushing, mixing, extruding, drying and the like. China is a big agricultural country, in the agricultural production process, after crops such as wheat, corn and rice are harvested, the number of straws which cannot be eaten is huge, the source of biomass fuel is reliable, the application of the existing biomass fuel boiler is greatly developed, in the use of the biomass boiler, because a large amount of slagging soot is generated, the flue gas can be deposited in a flue pipe (flue) in the heat exchange and discharge process, the heat exchange performance of components with deposited soot can be influenced, the flowing characteristic of the flue gas can be changed, the heat efficiency of the boiler is finally reduced, the existing biomass boiler is generally divided into a steam boiler, and the problems that the heat exchange speed is low, the resistance caused by steam turbulence, the steam production capacity is inconvenient and the like exist in the existing biomass steam generator.

Disclosure of Invention

An object of the utility model is to overcome the above-mentioned problem that present biomass steam boiler exists, provide a return bend heat transfer membrane wall double drum biomass steam generator.

In order to realize the purpose of the utility model, the following technical proposal is adopted: a bent pipe heat exchange membrane type wall double-drum biomass generator comprises a bent pipe heat exchange membrane type wall double-drum heat exchange device and combustion equipment, wherein the bent pipe heat exchange membrane type wall double-drum heat exchange device comprises two parallel left water pipes and a right water pipe which are arranged at the lower part, a plurality of left bent pipes with the same shape are connected to the left water pipe, the left bent pipes are distributed in the front and back direction, the lower ends of the left bent pipes are connected to the left water pipe, the left bent pipes are bent to the right and left alternately after going upwards to form bent pipes, the right and left bent pipes can be bent once or for a plurality of times, the upper end outlet of each left bent pipe is connected to a drum A, a plurality of right bent pipes with the same shape are connected to the right water pipe, the right bent pipes and the left bent pipes are arranged in the front and back direction in a crossed manner, the center lines of the connecting lines of the left water pipes and the right bent, the adjacent left bent pipes and the adjacent right bent pipes are sealed to form bent pipe heat exchange type membrane walls, the bent pipe heat exchange type membrane walls are divided into a plurality of heat exchange chambers by taking the intersection points of the left bent pipes and the right bent pipes as boundaries, all combustion chambers are communicated, the flue gas inlet and the flue gas outlet of each combustion chamber are positioned at different ends, the flue gas forms baffling among all combustion chambers, the heat exchange chamber at the lowest part is a combustion chamber, and the combustion chambers are communicated with combustion equipment; the top of the heat exchange chamber at the uppermost end is provided with a boiler barrel A and a boiler barrel B, and the boiler barrel A and the boiler barrel B are sealed; steam is output from the boiler barrel A and the boiler barrel B;

the combustion apparatus include the combustor, combustor upper portion set up the feeding auger, the feed inlet of feeding auger is located the fuel cell, has the fire grate in the combustor, has seted up the deashing mouth on the combustor under the fire grate, the combustor installs the air-blower outward, the air-blower is followed the fire grate through the air hose and is gone into the breeze in to the combustor down, the combustor wall is jacket structure, it has water to lead to in the jacket, the combustor connect the combustion chamber through a transition section of thick bamboo, install at least three overgrate on the section of thick bamboo wall of transition, the overgrate along the tangential of a transition section of thick bamboo, overgrate air pipe and air-blower intercommunication.

Further, the method comprises the following steps of; the waste heat recovery heat exchanger is arranged behind the uppermost heat exchange chamber, heat exchange water is communicated with the waste heat recovery heat exchanger, a flue gas inlet of the waste heat recovery heat exchanger is connected with a flue gas outlet of the uppermost heat exchange chamber, and an induced draft fan is connected to the flue gas outlet of the waste heat recovery heat exchanger.

Further, the method comprises the following steps of; the combustor is provided with a fire viewing port, and an air adjusting plate covers the fire viewing port.

Further, the method comprises the following steps of; and a fireproof heat-insulating layer is arranged outside the heat exchange membrane type wall of the bent pipe.

Further, the method comprises the following steps of; the number of the heat exchange chambers is 3.

Further, the method comprises the following steps of; the rear end of the combustion chamber is provided with an ash cleaning door.

The utility model discloses an actively beneficial technological effect lies in: the combustor is external among this steam generator, be convenient for deashing and maintenance, the changeover portion has between combustor and the combustion chamber, secondary air pipe on the changeover portion can form the vortex in this department, make the ashes burning in the flue gas more complete, so this boiler gets into the cigarette ash in the combustion chamber very little, the effectual biomass boiler cigarette ash of having overcome is along with the various problems that the flue gas drift brought, this boiler normal water passes through return bend back heat transfer and forms steam, the steam route is simple, high heat exchange efficiency, steam production capacity adjustment is convenient, and this steam generator's heat transfer room quantity can be according to the convenient increase and decrease of the tonnage of boiler, can make the boiler that becomes different tonnages. The combustion casing of the steam generator is replaced by a fuel oil and gas combustor, and the corresponding steam generator is changed into a fuel oil and gas steam generator.

Drawings

Fig. 1 is a schematic view of the interior of the present invention.

Fig. 2 is a schematic view from the rear with the rear part removed.

Figure 3 is a schematic plan view of a bent tube heat exchange membrane wall viewed in the front-to-back direction.

Fig. 4 is a schematic view from the front with the front part removed.

Detailed Description

In order to explain the utility model more fully, the utility model provides an implementation example. These examples are merely illustrative of the present invention and do not limit the scope of the present invention.

The invention is explained in further detail with reference to the drawings, in which the reference symbols are: 1: a bent pipe heat exchange membrane type wall; 2: a left water pipe; 3: a left elbow; 4: a right water pipe; 5: a right elbow; 6: a waste heat recoverer; 7: an induced draft fan; 8: a drum A; 9: a drum B; 10: a combustion engine; 11: observing a fire hole; 12: a combustion chamber; 13: a second heat exchange chamber; 14: a third heat exchange chamber; 15: a transition cylinder; 16: a secondary air duct; 17: a grate; 18: a blower; 19: a dust removal door; 20: feeding the auger; 21: a fuel chamber; 22: and (5) cleaning ash.

As shown in the attached drawings, the double-drum biomass generator with the bent-tube heat exchange membrane type wall comprises a double-drum heat exchange device with the bent-tube heat exchange membrane type wall and a combustion device, wherein the double-drum heat exchange device with the bent-tube heat exchange membrane type wall comprises two parallel left water tubes 2 and right water tubes 4 which are arranged at the lower part, a plurality of left bent tubes 3 with the same shape are connected to the left water tubes, the left bent tubes are distributed in the front and back direction, the lower ends of the left bent tubes are connected to the left water tubes, the left bent tubes are bent to the right and left alternately after ascending to form bent tubes, the bent tubes are bent to the right and left, the bent tubes can be bent to the right and left once or for a plurality of times, the outlets at the upper ends of the left bent tubes are connected to a drum A8, a plurality of right bent tubes 5 with the same shape are connected to the right water tubes, the, the upper end outlet of the right bent pipe is connected to the boiler barrel B9, the adjacent left bent pipes and the left bent pipe and the right bent pipe are sealed to form bent pipe heat exchange type membrane walls, and a fire-resistant heat-insulating layer is arranged outside the bent pipe heat exchange type membrane walls.

The heat exchange type membrane wall of the elbow is divided into a plurality of heat exchange chambers by taking the intersection point of the left elbow and the right elbow as a boundary, the heat exchange chambers are communicated, a flue gas inlet and a flue gas outlet of each heat exchange chamber are positioned at different ends, flue gas forms baffling among the combustion chambers, the heat exchange chamber at the lowest part is a combustion chamber, and the rear end of the combustion chamber is provided with an ash removal door 19.

The combustion chamber is communicated with combustion equipment; the top of the heat exchange chamber at the uppermost end is provided with a drum A8 and a drum B9, and the drum A and the drum B are sealed; steam is output from the boiler barrel A and the boiler barrel B; in this embodiment, be provided with waste heat recovery heat exchanger 6 behind the heat transfer chamber of top, lead to in the waste heat recovery heat exchanger and have traded hot water, the exhanst gas inlet of waste heat recovery heat exchanger connects the exhanst gas outlet of the heat transfer chamber of top, is connected with draught fan 7 on the exhanst gas outlet of waste heat recovery heat exchanger. The number of the heat exchange chambers is 3, the heat exchange chambers are respectively a combustion chamber 12, a second heat exchange chamber 13 and a third heat exchange chamber 14, smoke enters the second heat exchange chamber from the upper part of the rear part of the combustion chamber, is deflected, enters the third heat exchange chamber from the front part of the second heat exchange chamber, and then enters a waste heat recoverer from the rear part of the third heat exchange chamber.

Combustion apparatus include combustor 10, the combustor have and see burner 11, combustor upper portion set up feeding auger 20, the feed inlet of feeding auger is located fuel 21, has fire grate 17 in the combustor, has seted up deashing mouth 22 on the combustor under the fire grate, the combustor installs air-blower 18 outward, the air-blower is followed the fire grate through the primary air pipe and is gone into the primary air to the combustor under to, the combustor wall is jacket structure, it has water to lead to in the jacket, the combustor pass through transition section of thick bamboo 15 and connect combustion chamber 12, install at least three secondary air pipe 16 on transition section of thick bamboo wall, secondary air pipe along the tangential of transition section of thick bamboo, secondary air pipe and air-blower intercommunication.

When the boiler works, the flow of water deflection steam is as follows in sequence: waste heat recoverer, the combustor, left water pipe (right water pipe), left return bend (right return bend), the drum, fuel gets into the combustor through the feeding auger and burns and get into the combustion chamber through a transition section of thick bamboo, form the vortex burning under the effect of three secondary air pipe on the transition section of thick bamboo, it is more abundant to burn, flue gas after the burning gets into each heat transfer room in proper order behind the combustion chamber and carries out the heat transfer and discharge through the draught fan, the steam that the water shifted changes in the heat transfer process passes through the drum output, can set up the steam collection room on drum upper portion, outwards export steam from the steam collection room.

After the embodiments of the present invention have been described in detail, those skilled in the art can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above claims, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention all fall within the scope of the technical solution of the present invention, and the present invention is not limited to the embodiments of the examples given in the specification.

Claims

1. Bent pipe heat transfer membrane type wall double-drum biomass generator, including bent pipe heat transfer membrane type wall double-drum heat transfer device, combustion apparatus, its characterized in that: the double-drum heat exchange device with the bent pipe heat exchange membrane type wall comprises two parallel left water pipes and right water pipes arranged at the lower part, wherein a plurality of left bent pipes with the same shape are connected to the left water pipes and are distributed in the front and back directions, the lower ends of the left bent pipes are connected to the left water pipes, the left bent pipes are alternately bent to the right and left to form bent pipes after ascending, the bent pipes are bent to the right and left for one time or multiple times, the upper end outlet of each left bent pipe is connected to the drum A, a plurality of right bent pipes with the same shape are connected to the right water pipes, the right bent pipes and the left bent pipes are arranged in the front and back directions in a crossed manner, the right bent pipes and the left bent pipes are symmetrical about the central line of the connecting line of the left water pipes and the right water pipes, the upper end outlet of the right bent pipes is connected to the drum B, and the left bent pipes, dividing the heat exchange type membrane wall of the elbow into a plurality of heat exchange chambers by taking the intersection point of the left elbow and the right elbow as a boundary, wherein the heat exchange chambers are communicated, a flue gas inlet and a flue gas outlet of each heat exchange chamber are positioned at different ends, flue gas forms baffling among the combustion chambers, the heat exchange chamber at the lowest part is a combustion chamber, and the combustion chamber is communicated with combustion equipment; the top of the heat exchange chamber at the uppermost end is provided with a boiler barrel A and a boiler barrel B, and the boiler barrel A and the boiler barrel B are sealed; steam is output from the boiler barrel A and the boiler barrel B;

2. The bent-tube heat exchange membrane wall dual-drum biomass generator according to claim 1, characterized in that: the waste heat recovery heat exchanger is arranged behind the uppermost heat exchange chamber, heat exchange water is communicated with the waste heat recovery heat exchanger, a flue gas inlet of the waste heat recovery heat exchanger is connected with a flue gas outlet of the uppermost heat exchange chamber, and an induced draft fan is connected to the flue gas outlet of the waste heat recovery heat exchanger.

3. The bent-tube heat exchange membrane wall dual-drum biomass generator according to claim 1, characterized in that: the combustor is provided with a fire viewing port, and an air adjusting plate covers the fire viewing port.

4. The bent-tube heat exchange membrane wall dual-drum biomass generator according to claim 1, characterized in that: and a fireproof heat-insulating layer is arranged outside the heat exchange membrane type wall of the bent pipe.

5. The bent-tube heat exchange membrane wall dual-drum biomass generator according to claim 1, characterized in that: the number of the heat exchange chambers is 3.

6. The bent-tube heat exchange membrane wall dual-drum biomass generator according to claim 1, characterized in that: the rear end of the combustion chamber is provided with an ash cleaning door.