CN108826676B - Indirect heating type hot-blast stove - Google Patents
Indirect heating type hot-blast stove Download PDFInfo
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- CN108826676B CN108826676B CN201810892024.0A CN201810892024A CN108826676B CN 108826676 B CN108826676 B CN 108826676B CN 201810892024 A CN201810892024 A CN 201810892024A CN 108826676 B CN108826676 B CN 108826676B
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- air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
- F24H3/08—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes
- F24H3/087—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes using fluid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
- F24H9/1877—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1881—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2064—Arrangement or mounting of control or safety devices for air heaters
- F24H9/2085—Arrangement or mounting of control or safety devices for air heaters using fluid fuel
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Central Heating Systems (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to the field of hot blast stoves, in particular to an indirect heating type hot blast stove, which comprises an inner container and a shell arranged outside the inner container, wherein the inner container and the shell form an air duct; the inner container is internally provided with combustion equipment, the top of the inner container is provided with a smoke outlet, and the smoke outlet passes through the shell and leads to the outside; the shell is provided with a cold air inlet leading to the air duct from the outside and a hot air outlet leading to the outside from the air duct, and the cold air inlet is provided with a blowing device. The invention has the advantages that: the inner container and the shell form an air duct, and the combustion equipment in the inner container generates heat to indirectly heat air in the air duct, so that hot air is generated, the heat exchange area is large, and the heat conversion rate is high.
Description
Technical Field
The invention relates to the field of hot blast stoves, in particular to an indirect heating type hot blast stove.
Background
The indirect heating hot blast stove is mainly suitable for drying material without pollution or for drying heat sensitive material with low temperature. Such as milk powder, pharmacy, synthetic resin, fine chemical engineering, etc. The heating device uses steam, heat-conducting oil, flue gas and the like as carriers, heats air through various heat exchangers, and can be used for heating human beings through separation of fuel and a heating source. The most essential problem of the indirect hot blast stove is heat exchange, the larger the heat exchange area is, the higher the heat conversion rate is, the better the energy-saving effect of the hot blast stove is, the longer the service life of the stove body and the heat exchanger is, and on the contrary, the size of the heat exchange area can be identified from the smoke temperature. The lower the smoke temperature is, the higher the heat conversion rate is, and the larger the heat exchange area is, and in the prior art, the heat exchange area of a common hot blast stove is smaller, and the heat conversion rate is lower.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the problems of small heat exchange area and low heat conversion rate of an indirect heating type hot blast stove in the prior art are solved.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: an indirect heating type hot blast stove comprises a liner and a shell arranged outside the liner, wherein the liner and the shell form an air duct;
the inner container is internally provided with combustion equipment, the top of the inner container is provided with a smoke outlet, and the smoke outlet passes through the shell and leads to the outside;
the shell is provided with a cold air inlet leading to the air duct from the outside and a hot air outlet leading to the outside from the air duct, and the cold air inlet is provided with a blowing device.
Preferably, the combustion equipment is a gas fire grate.
Preferably, the combustion equipment is a combustor.
Preferably, a flame detector is arranged on the combustion equipment.
Preferably, the blowing device is a blower.
Preferably, the air channels comprise a first air channel, a second air channel, a third air channel and a fourth air channel, the first air channel, the second air channel, the third air channel and the fourth air channel are uniformly distributed on the side surface of the liner, the second air channel is arranged opposite to the first air channel on the side surface, and the third air channel is arranged opposite to the fourth air channel;
the first air channel is communicated with the cold air inlet, the first air channel is communicated with the second air channel through the air pipe, the air pipe penetrates through the inner container, the second air channel is communicated with the third air channel and the fourth air channel respectively, and the third air channel and the fourth air channel are converged and then lead to the hot air outlet.
Preferably, a part of the first air duct is distributed at the top of the inner container, and the first air duct distributed at the top is communicated with the cold air inlet.
Preferably, x first partition plates are arranged in the first air duct, y second partition plates are arranged in the second air duct, z third partition plates are arranged in the third air duct, and m fourth partition plates are arranged in the fourth air duct;
the first air channel is divided into x +1 first air channels by the x first partition plates, the first air channels are isolated from one another, the second air channels are divided into y +1 second air channels by the y second partition plates, the second air channels are isolated from one another, the third air channels are divided into z +1 third air channels by the z third partition plates, the third air channels are communicated with one another end to end, the fourth air channels are divided into m +1 fourth air channels by the m fourth partition plates, and the fourth air channels are communicated with one another end to end;
the first air channel is communicated with the cold air inlet, the first air channel is communicated with the first second air channel through an air pipe, the first second air channel is communicated with the second first air channel through an air pipe, the second first air channel is communicated with the second air channel through an air pipe, and the like in sequence, the (y + 1) th second air channel is communicated with the first third air channel and the first fourth air channel respectively, and the (z + 1) th third air channel is communicated with the (m + 1) th fourth air channel after being converged and then communicated with the hot air outlet.
Optimally, x is 2, y is 1, z is 1, and m is 1;
the first air duct is communicated with the cold air inlet, the first air duct is communicated with the first second air duct through an air duct, the first second air duct is communicated with the second first air duct through an air duct, the second first air duct is communicated with the second air duct through an air duct, the second air duct is respectively communicated with the first third air duct and the first fourth air duct, and the second third air duct and the second fourth air duct are communicated with the hot air outlet after the third first air duct is converged.
The invention has the beneficial effects that:
1. the inner container and the shell form an air channel, and the combustion equipment in the inner container generates heat to indirectly heat air in the air channel so as to generate hot air, so that the heat exchange area is large, and the heat conversion rate is high;
2. the gas fire grate and the burner are adopted to heat cold air, so that the heating process is convenient and efficient;
3. the flame detector detects the combustion state of the combustion equipment in real time so as to facilitate timely maintenance;
4. the blower can efficiently and conveniently provide power for the flow of wind in the air duct, so that hot air is conveniently released and the heat of the hot blast stove is conveniently dissipated, and the hot blast stove is prevented from being damaged due to overhigh temperature caused by unsmooth ventilation;
5. the air ducts on the side surfaces of the hot blast stove are communicated through the air pipes, and the circulation length of cold air is increased under the condition that the overall size of the hot blast stove is not changed, so that the heat exchange area of the hot blast stove is increased, and the heat conversion rate of the hot blast stove is improved;
6. the top of the inner container is distributed with air channels to further increase the circulation length of cold air, thereby increasing the heat exchange area and improving the heat conversion rate;
7. each wind channel is further divided into a plurality of wind channels by the arrangement of each partition plate, so that the circulation length of cold wind can be further increased, the heat exchange area of the air conditioner is increased, and the heat conversion rate of the air conditioner is improved.
Drawings
FIG. 1 is a schematic view (front view direction) of an indirect heating hot blast stove according to an embodiment of the present invention;
FIG. 2 is a schematic view (right side view orientation) of an indirect heating hot blast stove according to an embodiment of the present invention;
FIG. 3 is a schematic view (in top view) of an indirect heating hot blast stove according to an embodiment of the present invention;
the device comprises an inner container-1, a shell-2, an air duct-3, a combustion device-11, a smoke outlet-12, a cold air inlet-21, a hot air outlet-22, a first air duct-31, a second air duct-32, a third air duct-33, a fourth air duct-34, an air duct-35, a flame detector-111, a first partition-311, a second partition-321, a third partition-331 and a fourth partition-341.
Detailed Description
The present invention is described in detail below with reference to the attached drawings.
In the description of the present invention, it should be noted that the terms "front", "rear", "left", "right", "horizontal", "vertical", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, the indirect heating type hot blast stove comprises an inner container 1 and a shell 2 arranged outside the inner container 1, wherein the inner container 1 and the shell 2 form an air duct 3, a combustion device 11 is arranged in the inner container 1, a smoke outlet 12 is arranged at the top of the inner container 1, the smoke outlet 12 penetrates through the shell 2 to lead to the outside, a cold air inlet 21 leading to the air duct 3 from the outside and a hot air outlet 22 leading to the outside from the air duct 3 are arranged on the shell 2, and a blowing device (not shown in the figure) is arranged at the cold air inlet 21.
As shown in fig. 1, the inner container 1 and the outer shell 2 form an air duct 3, and the combustion device 11 in the inner container 1 generates heat by combustion to indirectly heat air in the air duct 3, so as to generate hot air, which has a large heat exchange area and a high heat conversion rate.
Further, in this embodiment, the combustion apparatus 11 is a gas fire grate, and meanwhile, according to actual requirements, the combustion apparatus 11 of the present invention may be set as a burner or other combustion apparatuses capable of generating heat, and the gas fire grate and the burner are used to heat cold air, so that the heating process is relatively convenient and efficient.
Further, as shown in fig. 1, in the present embodiment, a flame detector 111 is disposed on the combustion device 11, and the flame detector 111 detects a combustion state of the combustion device 11 in real time, so as to facilitate timely maintenance.
Further, in this embodiment blast apparatus is the air-blower, and the air-blower can be comparatively high-efficient, convenient for 3 apoplexy mobile power supplies in wind channel to hot-blast release and the heat dissipation of hot-blast furnace prevent to arouse the too high hot-blast furnace temperature and damage the hot-blast furnace because of the ventilation is smooth.
Further, as shown in fig. 1 to 3, the air duct 3 includes a first air duct 31, a second air duct 32, a third air duct 33, and a fourth air duct 34, the first air duct 31, the second air duct 32, the third air duct 33, and the fourth air duct 34 are all distributed on the side surface of the inner container 1, the second air duct 32 is disposed opposite to the first air duct 31 on the side surface, and the third air duct 33 is disposed opposite to the fourth air duct 34.
The first air duct 31 is communicated with the cold air inlet 21, the first air duct 31 is communicated with the second air duct 32 through an air duct 35, the air duct 35 penetrates through the inner container 1, the second air duct 32 is respectively communicated with the third air duct 33 and the fourth air duct 34, and the third air duct 33 and the fourth air duct 34 are converged and then lead to the hot air outlet 22.
The air ducts 3 on the side surfaces of the hot blast stove are communicated through the air ducts 35, and the circulation length of cold air is increased under the condition that the overall size of the hot blast stove is not changed, so that the heat exchange area of the hot blast stove is increased, and the heat conversion rate of the hot blast stove is improved.
Further, as shown in fig. 1-2, a part of the first air duct 31 is distributed on the top of the inner container 1, and the first air duct 31 distributed on the top is communicated with the cold air inlet 21. The top of the inner container 1 is distributed with an air duct 3 to further increase the circulation length of cold air, thereby increasing the heat exchange area and improving the heat conversion rate.
Further, x first partition plates 311 are disposed in the first air duct 31, y second partition plates 321 are disposed in the second air duct 32, z third partition plates 331 are disposed in the third air duct 33, and m fourth partition plates 341 are disposed in the fourth air duct 34, where the first partition plate 311 and the second partition plate 321 are horizontally disposed, and the third partition plate 331 and the fourth partition plate 341 are vertically disposed, and may also be disposed along other directions according to actual situations.
The x first partition boards 311 divide the first air duct 31 into x +1 first air ducts 31, the first air ducts 31 are isolated from each other, the y second partition boards 321 divide the second air duct 32 into y +1 second air ducts 32, the second air ducts 32 are isolated from each other, the z third partition boards 331 divide the third air duct 33 into z +1 third air ducts 33, the third air ducts 33 are communicated with each other end to end, the m fourth partition boards 341 divide the fourth air duct 34 into m +1 fourth air ducts 34, and the fourth air ducts 34 are communicated with each other end to end.
The first air duct 31 is communicated with the cold air inlet 21, the first air duct 31 is communicated with the first second air duct 32 through an air duct 35, the first second air duct 32 is communicated with the second first air duct 31 through an air duct 35, the second first air duct 31 is communicated with the second air duct 32 through an air duct 35, and so on, the (y + 1) th second air duct 32 is respectively communicated with the first third air duct 33 and the first fourth air duct 34, and the (z + 1) th third air duct 33 is communicated with the (m + 1) th fourth air duct 34 after being converged and then communicated with the hot air outlet 22.
Further, as shown in fig. 1-3, in this embodiment, x is 2, y is 1, z is 1, and m is 1, the first air duct 31 is communicated with the cold air inlet 21, the first air duct 31 is communicated with the first second air duct 32 through an air duct 35, the first second air duct 32 is communicated with the second first air duct 31 through an air duct 35, the second first air duct 31 is communicated with the second air duct 32 through an air duct 35, the second air duct 32 is respectively communicated with the first third air duct 33 and the first fourth air duct 34, and the second third air duct 33 and the second fourth air duct 34 are communicated with the hot air outlet 22 after the third first air duct 31 is merged.
Each wind channel 3 is further divided into a plurality of wind channels 3 by the arrangement of each partition plate, so that the circulation length of cold wind can be further increased, the heat exchange area of the air conditioner is increased, and the heat conversion rate of the air conditioner is improved.
The working principle is as follows:
as shown in fig. 1-3, after the indirect heating type hot blast stove in this embodiment is turned on, the blower pumps the cold air into the first air duct 31, then the cold air passes through the first air duct 31, the air duct 35, the first air duct 32, the air duct 35, the second air duct 31, the air duct 35, the second air duct 32, the first air duct 33, the first air duct 34, the second air duct 33, the second air duct 34, and the third air duct 33 and the second air duct 34 in sequence, and finally the hot air is discharged from the hot air outlet 22, the flow path of the cold air is a-B-C-D-E-F-G-H-I-J-K-L in the figure, and the cold air is gradually heated by the heat generated by the combustion of the combustion device 11 during the flow process of the cold air, until the air is heated into hot air and discharged, each air channel 3 is skillfully communicated through the air pipe 35 through special structural design, the air channels 3 are divided into a plurality of air channels 3 through the partition plates, and the flowing distance of the cold air is prolonged, so that the heat exchange area is increased, and the heat conversion rate is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. An indirect heating formula hot-blast furnace which characterized in that: comprises an inner container (1) and a shell (2) arranged outside the inner container (1), wherein the inner container (1) and the shell (2) form an air duct (3);
the combustion equipment (11) is arranged in the inner container (1), the top of the inner container (1) is provided with a smoke outlet (12), and the smoke outlet (12) penetrates through the shell (2) and leads to the outside;
the shell (2) is provided with a cold air inlet (21) leading to the air duct (3) from the outside and a hot air outlet (22) leading to the outside from the air duct (3), and a blowing device is arranged at the cold air inlet (21);
the air duct (3) comprises a first air duct (31), a second air duct (32), a third air duct (33) and a fourth air duct (34), the first air duct (31), the second air duct (32), the third air duct (33) and the fourth air duct (34) are uniformly distributed on the side surface of the inner container (1), the second air duct (32) is arranged opposite to the first air duct (31) on the side surface, and the third air duct (33) is arranged opposite to the fourth air duct (34);
the first air channel (31) is communicated with the cold air inlet (21), the first air channel (31) is communicated with the second air channel (32) through an air pipe (35), the air pipe (35) penetrates through the inner container (1), the second air channel (32) is respectively communicated with the third air channel (33) and the fourth air channel (34), and the third air channel (33) and the fourth air channel (34) are converged and then led to the hot air outlet (22);
x first partition plates (311) are arranged in the first air duct (31), y second partition plates (321) are arranged in the second air duct (32), z third partition plates (331) are arranged in the third air duct (33), and m fourth partition plates (341) are arranged in the fourth air duct (34);
the first air duct (31) is divided into x +1 first air ducts (31) by x first partition plates (311), the first air ducts (31) are isolated from each other, the second air duct (32) is divided into y +1 second air ducts (32) by y second partition plates (321), the second air ducts (32) are isolated from each other, the third air duct (33) is divided into z +1 third air ducts (33) by z third partition plates (331), the third air ducts (33) are communicated with each other end to end, the fourth air duct (34) is divided into m +1 fourth air ducts (34) by m fourth partition plates (341), and the fourth air ducts (34) are communicated with each other end to end;
the first air channel (31) is communicated with the cold air inlet (21), the first air channel (31) is communicated with the first second air channel (32) through an air pipe (35), the first second air channel (32) is communicated with the second first air channel (31) through the air pipe (35), the second first air channel (31) is communicated with the second air channel (32) through the air pipe (35), and so on, the (y + 1) th second air channel (32) is respectively communicated with the first third air channel (33) and the first fourth air channel (34), and the (z + 1) th third air channel (33) is communicated with the hot air outlet (22) after being converged with the (m + 1) th fourth air channel (34).
2. An indirect heating hot blast stove according to claim 1, characterized in that: the combustion equipment (11) is a gas fire grate.
3. An indirect heating hot blast stove according to claim 1, characterized in that: the combustion equipment (11) is a combustor.
4. An indirect heating hot blast stove according to claim 1, characterized in that: and a flame detector (111) is arranged on the combustion equipment (11).
5. An indirect heating hot blast stove according to claim 1, characterized in that: the blowing device is a blower.
6. An indirect heating hot blast stove according to claim 1, characterized in that: and a part of the first air duct (31) is distributed at the top of the inner container (1), and the first air duct (31) distributed at the top is communicated with the cold air inlet (21).
7. An indirect heating hot blast stove according to claim 1, characterized in that: the x is 2, y is 1, z is 1, and m is 1;
the first air duct (31) is communicated with the cold air inlet (21), the first air duct (31) is communicated with the first second air duct (32) through an air duct (35), the first second air duct (32) is communicated with the second first air duct (31) through the air duct (35), the second first air duct (31) is communicated with the second air duct (32) through the air duct (35), the second air duct (32) is respectively communicated with the first third air duct (33) and the first fourth air duct (34), and the 2 nd third air duct (33) and the 2 nd fourth air duct (34) are communicated with the hot air outlet (22) after the 3 rd first air duct (31) is converged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810892024.0A CN108826676B (en) | 2018-08-07 | 2018-08-07 | Indirect heating type hot-blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810892024.0A CN108826676B (en) | 2018-08-07 | 2018-08-07 | Indirect heating type hot-blast stove |
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| Publication Number | Publication Date |
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| CN108826676A CN108826676A (en) | 2018-11-16 |
| CN108826676B true CN108826676B (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810892024.0A Active CN108826676B (en) | 2018-08-07 | 2018-08-07 | Indirect heating type hot-blast stove |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2043736U (en) * | 1988-11-30 | 1989-08-30 | 北京环保技术设备中心 | Vertical hot-air furnace capable of returning smoke from two sides of the furnace |
| JPH02110252A (en) * | 1988-10-19 | 1990-04-23 | Sanyo Electric Co Ltd | Heat exchanging device |
| CN2284928Y (en) * | 1996-10-24 | 1998-06-24 | 中国农业工程研究设计院 | Pulse tube hot-air furnace |
| CN2651659Y (en) * | 2003-10-30 | 2004-10-27 | 刘鸣九 | High-efficient coal firing hot-air furnaces |
| CN202281375U (en) * | 2011-10-21 | 2012-06-20 | 邓超 | Hot blast stove with return and surround heat exchange |
| CN203731678U (en) * | 2014-03-20 | 2014-07-23 | 梨树县梨树镇久顺机械厂 | Vertical transverse pipe hot air furnace |
-
2018
- 2018-08-07 CN CN201810892024.0A patent/CN108826676B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02110252A (en) * | 1988-10-19 | 1990-04-23 | Sanyo Electric Co Ltd | Heat exchanging device |
| CN2043736U (en) * | 1988-11-30 | 1989-08-30 | 北京环保技术设备中心 | Vertical hot-air furnace capable of returning smoke from two sides of the furnace |
| CN2284928Y (en) * | 1996-10-24 | 1998-06-24 | 中国农业工程研究设计院 | Pulse tube hot-air furnace |
| CN2651659Y (en) * | 2003-10-30 | 2004-10-27 | 刘鸣九 | High-efficient coal firing hot-air furnaces |
| CN202281375U (en) * | 2011-10-21 | 2012-06-20 | 邓超 | Hot blast stove with return and surround heat exchange |
| CN203731678U (en) * | 2014-03-20 | 2014-07-23 | 梨树县梨树镇久顺机械厂 | Vertical transverse pipe hot air furnace |
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| Publication number | Publication date |
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| CN108826676A (en) | 2018-11-16 |
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