CN113834052A

CN113834052A - Boiler with flue gas waste heat utilization equipment

Info

Publication number: CN113834052A
Application number: CN202110944507.2A
Authority: CN
Inventors: 余帆
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2021-12-24

Abstract

The invention discloses a boiler with a flue gas waste heat utilization device, and relates to the technical field of boiler equipment. The smoke exhaust device comprises a shell, wherein a smoke exhaust tube is arranged at a port of the shell, and a water supply assembly is arranged in a cavity formed by the shell and the smoke exhaust tube; the combustor that is used for the heating of water supply assembly is installed to the bottom of casing, and heat transfer portion is still installed to the chimney inboard, and the heat transfer portion is located the inside of water supply assembly, the passageway that forms between the flue gas accessible heat transfer portion of production and the water supply assembly. The flue gas can pass through a channel formed between the heat exchanging part and the water supply assembly to complete heat exchange on the unheated water inlet assembly section, so that the temperature of water in the water inlet assembly section is increased.

Description

Boiler with flue gas waste heat utilization equipment

Technical Field

The invention belongs to the technical field of boiler equipment, and particularly relates to a boiler with a flue gas waste heat utilization device.

Background

The energy-saving and emission-reducing work is comprehensively promoted in the whole social range, and meanwhile, various energy-saving and energy-recovering modes are generated. At present, the energy utilization rate of China is still at a lower level, and the waste heat recovery technology still has a large development space and potential, so that a large amount of industrial waste heat/waste heat resources cannot be effectively recycled due to the restriction of the prior art. Taking the steel industry as an example, the recovery utilization rate of flue gas waste heat discharged by various furnaces in the steel industry of China is only about 30 percent, which is far lower than the level of developed countries. The method directly discharges various medium-high temperature flue gases into the atmospheric environment, thereby not only causing environmental pollution, but also wasting a large amount of heat energy. The flue gas waste heat is recycled, so that good social effect can be obtained in the aspect of environmental protection, and the flue gas waste heat recycling device has strong attraction in the aspect of economy, and therefore, the development of the flue gas waste heat recycling technology has important significance for further improving and developing an energy recycling mode.

At present, the boiler, whether a coal-fired boiler, a gas-fired boiler, an oil-fired boiler or a biomass boiler, has the problem of low thermal efficiency, wherein the loss of smoke discharge is one of the most important reasons for low thermal efficiency of the boiler. The temperature of the flue gas discharged by the boilers is more than 90 ℃, the flue gas is directly discharged to the outside after being subjected to environment-friendly treatment, the heat of the flue gas cannot be effectively utilized, China is a big coal-fired country, thousands of tons of smoke and dust are discharged from various coal-fired boilers every year, the heat of the flue gas cannot be recovered, and great resource waste is caused, so that the recovery of the waste heat of the flue gas becomes a main research direction for improving the heat efficiency of the boilers.

Disclosure of Invention

The invention aims to provide a boiler with a flue gas waste heat utilization device, wherein flue gas can pass through a channel formed between a heat exchange part and a water supply assembly to complete heat exchange on an unheated water inlet assembly section, so that the temperature of water in the water inlet assembly section is increased, and the problems in the background art are solved.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a boiler with a flue gas waste heat utilization device, which comprises a shell, wherein a smoke exhaust tube is arranged at a port of the shell, and a water supply assembly is arranged in a cavity formed by the shell and the smoke exhaust tube; the combustor that is used for the heating of water supply subassembly is installed to the bottom of casing, heat transfer portion is still installed to the chimney inboard, the heat transfer portion is located the inside of water supply subassembly, the passageway that forms between the flue gas accessible heat transfer portion of production and the water supply subassembly.

Furthermore, the upper end of the shell is of a conical shell structure, and a small port of the conical shell is communicated with the smoke exhaust pipe.

Further, the water supply assembly comprises a water storage device, a water collector, a water separator, a first pipe body and a second pipe body; the water storage device is communicated with the water storage device through one or more tube bodies II, a water outlet pipe is further arranged on the side surface of the water storage device, and the end part of the water outlet pipe penetrates through the shell to extend to the outside; the water collector is communicated with the water distributor through one or more pipes, a water inlet pipe is arranged on the side face of the water distributor, and the end of the water inlet pipe penetrates through the smoke exhaust pipe and extends to the outside.

Furthermore, the water storage device, the water collector and the water distributor are all of a ring body structure, the water storage device is installed in a conical shell of the shell in an attaching mode, the water collector is installed at the joint of the shell and the smoke exhaust cylinder in an attaching mode, and the water distributor is installed in the smoke exhaust cylinder in an attaching mode; the water separator is arranged on the upper side of the water storage device, and the water collector is arranged between the water separator and the water storage device.

Further, the second pipe body is spirally distributed along the conical shell of the shell, and meanwhile, the first pipe body and the second pipe body are both made of copper.

Furthermore, the water collector is provided with a cavity with an opening on the inner side surface; the heat exchange portion comprises a smoke tube and a rotating portion, the rotating portion is installed in a cavity of the water collector in a matched mode, and the rotating portion is fixedly provided with the smoke tube which penetrates through the first pipe body and extends to the outside.

Further, the rotating part comprises threaded blades, a ring body and inclined blades, the ring body is installed on the inner side of the water collector in a matched mode, a plurality of threaded blades extending into a cavity of the water collector are evenly distributed on the outer side of the ring body, a plurality of inclined blades are evenly distributed on the inner side of the ring body, the bottom ends of the inclined blades are provided with discs to form air inlet holes, and a plurality of smoke pipes corresponding to the air inlet holes are fixed to the top ends of the inclined blades.

Further, the sliding block has been cup jointed on the tobacco pipe, the sliding block slides in a body.

The invention has the following beneficial effects:

1. the water supply assembly is communicated with the water inlet pipeline and the water outlet pipeline, the water supply assembly is heated by the burner, the smoke generated in the heating process passes through the smoke exhaust pipe, and meanwhile, the smoke can pass through the channel formed between the heat exchange part and the water supply assembly to complete heat exchange on the unheated water inlet assembly section, so that the temperature of water in the water inlet assembly section is increased, the time for heating the water to boiling is effectively shortened, and the use of fuel is effectively reduced.

2. According to the invention, the water storage device, the water collector, the water separator, the first pipe body and the second pipe body which are arranged form the water supply assembly, so that water automatically flows to the water storage device end under the action of gravity to be heated, the water inlet end provided with the water separator is positioned inside the smoke exhaust pipe, heat exchange is realized in the water inlet process, and the utilization of heat in smoke is improved; in addition, the second pipe body is spirally distributed along the conical shell of the shell to effectively increase the heating area, and the heating time is convenient to shorten under the same condition.

3. According to the invention, after the water in the second pipe body is heated to a constant temperature, the boiler is simultaneously preheated, the flowing water in the second pipe body is heated, the threaded blades are pushed in the flowing process of the flowing water to drive the rotating part and the smoke pipe to rotate, the inclined blades arranged in the rotating part generate suction in the rotating process, the smoke is sucked into the channel formed between the smoke pipe and the first pipe body, the heat exchange between the water flow of the first pipe body and the smoke is conveniently realized, and the utilization rate of the waste heat of the smoke is improved.

4. According to the invention, after smoke enters a channel formed between the smoke tube and the first tube body, the sliding block is pushed to move upwards, the generated thrust enables the sliding block to be kept at the top end position, when the sliding block does not work, the sliding block slides downwards under the action of gravity, and a port of the sliding block scrapes off particles attached to the surface of the smoke tube or the first tube body, so that the channel formed between the smoke tube and the first tube body is cleaned.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal deployment structure of the present invention;

FIG. 3 is a schematic view of the water supply assembly of the present invention;

FIG. 4 is a schematic view of the heat exchange part of the present invention;

FIG. 5 is a schematic view of the internal structure of the heat exchange part of the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

the smoke exhaust device comprises a shell 1, a smoke exhaust cylinder 2, a combustor 3, a water receiver 4, a water outlet pipe 41, a water collector 5, a water separator 6, a water inlet pipe 61, a pipe body I7, a pipe body II 8, a heat exchange part 9, a smoke pipe 91, a sliding block 92, a rotating part 93, a threaded blade 931, a ring 932 and an inclined blade 933.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

Referring to fig. 1-5, the invention is a boiler with a flue gas waste heat utilization device, comprising a shell 1, a smoke exhaust pipe 2 is installed at a port of the shell 1, and a water supply assembly is installed in a cavity formed by the shell 1 and the smoke exhaust pipe 2; the combustor 3 that is used for the heating of water supply assembly is installed to the bottom of casing 1, and heat transfer portion 9 is still installed to chimney 2 inboard, and heat transfer portion 9 is located water supply assembly's inside, the passageway that forms between the flue gas accessible heat transfer portion 9 of production and the water supply assembly.

In the in-process that uses, the water supply subassembly that is equipped with advance, drainage pipe intercommunication, the combustor 3 through being equipped with heats the water supply subassembly, the flue gas that produces in the heating process is through the chimney 2 that is equipped with, the passageway that forms between flue gas accessible heat transfer portion 9 and the water supply subassembly simultaneously, the completion is to the subassembly section of intaking that does not heat exchange, the temperature of the inside water of subassembly section of intaking is improved, thereby the effectual time of reducing the water heating to boiling, the effectual use that reduces fuel.

The upper end of the shell 1 is a conical shell structure, and a small port of the conical shell is communicated with the smoke exhaust pipe 2.

Establish into toper shell structure with the upper end of casing 1, the guarantee that the taper shell structure inboard is gone up the different positions of the water supply assembly of installation and the range of combustor 3 extremely poor littleer, and the heating is more even, and the effect of effectual improvement heating shortens the heat time.

The water supply assembly comprises a water storage device 4, a water collector 5, a water distributor 6, a first pipe body 7 and a second pipe body 8; the water storage device 4 is communicated with the water storage device 5 through one or more tube bodies II 8, a water outlet pipe 41 is further arranged on the side surface of the water storage device 4, and the end part of the water outlet pipe 41 penetrates through the shell 1 to extend to the outside; the water collector 5 is communicated with the water distributor 6 through one or more pipe bodies 7, a water inlet pipe 61 is arranged on the side surface of the water distributor 6, and the end part of the water inlet pipe 61 penetrates through the smoke exhaust pipe 2 and extends to the outside.

The water storage device 4, the water collector 5 and the water distributor 6 are all of a ring structure, the water storage device 4 is installed in a conical shell of the shell 1 in an attaching mode, the water collector 5 is installed at the joint of the shell 1 and the smoke exhaust tube 2 in an attaching mode, and the water distributor 6 is installed in the smoke exhaust tube 2 in an attaching mode; a water separator 6 is provided at the upper side of the water reservoir 4 and a water collector 5 is provided between the water separator 6 and the water reservoir 4.

The second pipe body 8 is spirally distributed along the conical shell of the shell 1, and meanwhile, the first pipe body 7 and the second pipe body 8 are both made of copper.

The water receiver 4, the water collector 5, the water separator 6, the first pipe body 7 and the second pipe body 8 form a water supply assembly, so that water automatically flows to the end of the water receiver 4 under the action of gravity to be heated, the water inlet end provided with the water separator 6 is positioned inside the smoke exhaust cylinder 2, heat exchange is realized in the water inlet process, and the utilization of heat in smoke is improved; in addition, the second pipe body 8 is spirally distributed along the conical shell of the shell 1, so that the heating area is effectively increased, and the heating time is conveniently shortened under the same condition.

The water collector 5 is provided with a cavity with an opening on the inner side surface; the heat exchanging part 9 comprises a smoke tube 91 and a rotating part 93, the rotating part 93 is installed in the cavity of the water collector 5 in a matching mode, and the smoke tube 91 which penetrates through the first pipe body 7 and extends to the outside is fixed on the rotating part 93.

The rotating part 93 comprises a threaded blade 931, a ring body 932 and inclined blades 933, the ring body 932 is matched and installed on the inner side of the water collector 5, the threaded blade 931 extending into the cavity of the water collector 5 is evenly distributed on the outer side of the ring body 932, a plurality of inclined blades 933 are evenly distributed on the inner side of the ring body 932, the bottom ends of the inclined blades 933 are provided with a disc to form an air inlet hole, and a smoke pipe 91 corresponding to the air inlet hole is fixed on the top ends of the inclined blades 933.

After the second pipe body 8 is filled with water through the first pipe body 7 in the heating treatment, the second pipe body 8 is continuously heated, and meanwhile, the heat exchange part 9 does not rotate under the action of no water flow, so that the smoke can be rapidly discharged through the smoke pipe 91, and the situation that the resistance of water hinders the heat exchange part 9 to facilitate the gas discharge is avoided; after the water in the second 8 of body heats to the constant temperature, accomplish simultaneously and preheat the boiler, the realization heats the flowing water in the second 8 of body, rivers flow in-process and promote screw thread blade 931 and drive rotation part 93 and tobacco pipe 91 and rotate, and the slope blade 933 that is equipped with in the rotation part 93 gathers in the pivoted process and produces suction, in sucking the passageway that forms between tobacco pipe 91 and the first 7 of body with the flue gas, be convenient for realize that the rivers of the first 7 of body carry out the heat exchange with the flue gas, improve the utilization ratio of flue gas waste heat.

The sliding block 92 is sleeved on the smoke tube 91, and the sliding block 92 slides in the first tube body 7.

After the smoke enters the channel formed between the smoke tube 91 and the first pipe body 7, the sliding block 92 is pushed to move upwards, the generated thrust enables the sliding block 92 to be kept at the top end position, when the smoke tube does not work, the sliding block 92 slides downwards under the action of gravity, and the port of the sliding block 92 scrapes off particles attached to the surface of the smoke tube 91 or the first pipe body 7, so that the channel formed between the smoke tube 91 and the first pipe body 7 is cleaned.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a boiler with flue gas waste heat utilization equipment, includes casing (1), its characterized in that:

a smoke exhaust tube (2) is installed at a port of the shell (1), and a water supply assembly is installed in a cavity formed by the shell (1) and the smoke exhaust tube (2);

the combustor (3) that is used for the heating of water supply subassembly is installed to the bottom of casing (1), heat transfer portion (9) are still installed to chimney (2) inboard, heat transfer portion (9) are located the inside of water supply subassembly, the flue gas accessible heat transfer portion (9) of production and the passageway that forms between the water supply subassembly.

2. The boiler with the flue gas waste heat utilization device according to claim 1, characterized in that the upper end of the shell (1) is a conical shell structure, and the small port of the conical shell is communicated with the smoke exhaust tube (2).

3. The boiler with the flue gas waste heat utilization device according to claim 1, wherein the water supply assembly comprises a water receiver (4), a water collector (5), a water separator (6), a pipe body I (7) and a pipe body II (8);

the water storage device (4) and the water storage device (5) are communicated with each other through one or more tube bodies II (8), a water outlet pipe (41) is further arranged on the side surface of the water storage device (4), and the end part of the water outlet pipe (41) penetrates through the shell (1) and extends to the outside;

the water collector (5) and the water distributor (6) are mutually communicated through one or more pipes (7), a water inlet pipe (61) is arranged on the side face of the water distributor (6), and the end of the water inlet pipe (61) penetrates through the smoke exhaust tube (2) and extends to the outside.

4. The boiler with the flue gas waste heat utilization device is characterized in that the water receiver (4), the water collector (5) and the water separator (6) are all of a ring structure, the water receiver (4) is mounted in a conical shell of the shell (1) in a fitting manner, the water collector (5) is mounted at the joint of the shell (1) and the smoke exhaust cylinder (2) in a fitting manner, and the water separator (6) is mounted in the smoke exhaust cylinder (2) in a fitting manner;

the water separator (6) is arranged at the upper side of the water storage device (4), and the water collector (5) is arranged between the water separator (6) and the water storage device (4).

5. The boiler with the flue gas waste heat utilization device according to the claim 3, characterized in that the second pipe body (8) is spirally distributed along the conical shell of the shell (1), and the first pipe body (7) and the second pipe body (8) are both made of copper.

6. The boiler with the flue gas waste heat utilization device according to claim 3, characterized in that the water collector (5) is provided with a cavity with an opening on the inner side;

the heat exchanging part (9) comprises a smoke pipe (91) and a rotating part (93), the rotating part (93) is installed in a cavity of the water collector (5) in a matched mode, and the rotating part (93) is fixedly provided with the smoke pipe (91) which penetrates through the first pipe body (7) and extends to the outside.

7. The boiler with the flue gas waste heat utilization device according to claim 6, wherein the rotating part (93) comprises a threaded blade (931), a ring body (932) and an inclined blade (933), the ring body (932) is installed inside the water collector (5) in a matching manner, a plurality of threaded blades (931) extending into a cavity of the water collector (5) are uniformly distributed on the outer side of the ring body (932), a plurality of inclined blades (933) are uniformly distributed on the inner side of the ring body (932), a circular disc is arranged at the bottom ends of the plurality of inclined blades (933) to form an air inlet hole, and a smoke pipe (91) corresponding to the air inlet hole is fixed on the top ends of the plurality of inclined blades (933).

8. The boiler with the flue gas waste heat utilization device according to claim 6, wherein a sliding block (92) is sleeved on the flue pipe (91), and the sliding block (92) slides in the first pipe body (7).