CN215062182U - Double-layer multi-convection heating device of large-scale assembled boiler and large-scale assembled boiler - Google Patents
Double-layer multi-convection heating device of large-scale assembled boiler and large-scale assembled boiler Download PDFInfo
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- CN215062182U CN215062182U CN202120869976.8U CN202120869976U CN215062182U CN 215062182 U CN215062182 U CN 215062182U CN 202120869976 U CN202120869976 U CN 202120869976U CN 215062182 U CN215062182 U CN 215062182U
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Abstract
The utility model discloses a double-layer multi-convection heating device of a large-scale assembled boiler, which comprises a convection section, wherein the convection section is positioned behind a hearth, and the inside of the convection section is communicated with a hearth outlet positioned at the upper part of the hearth; the convection section comprises at least 2 convection heating units, the convection heating units are adjacently arranged along the length direction of the boiler, each convection heating unit is internally provided with an upper layer of coiled pipe and a lower layer of coiled pipe, and the coiled pipes are horizontally arranged; the upper part or the lower part of the convection heating unit is provided with a flue gas channel, the convection heating units are communicated with each other through the flue gas channel, and the flue gas channels form an S-shaped flue gas channel. The utility model provides a pair of double-deck many convection currents of large-scale equipment boiler are heated device, its convection current section can divide into a plurality of parts and transport alone, has solved the problem of super wide transportation, falls into a plurality of parts and makes manufacturing cost that has also significantly reduced alone simultaneously, has promoted the practicality greatly.
Description
Technical Field
The utility model belongs to the technical field of the boiler, concretely relates to double-deck many convection currents of large-scale equipment boiler are heated device and large-scale equipment boiler.
Background
The boiler is an energy conversion device, the energy input to the boiler is in the forms of chemical energy in fuel, electric energy, heat energy of high-temperature flue gas and the like, and steam, high-temperature water or an organic heat carrier with certain heat energy is output outwards after conversion of the boiler, so that the boiler is mainly used for thermal power stations, ships, locomotives and industrial and mining enterprises.
Along with the requirements of national policies, boiler equipment is developed to be large-scale, the appearance and the size of a hearth are continuously increased, the convection heating surface is also larger and larger, the conventional arrangement and transportation are more and more difficult, the manufacturing cost of the boiler equipment is higher and higher, and meanwhile, the ultra-wide transportation of the boiler equipment has great inconvenience.
Therefore, the research and development of a double-layer multi-convection heating device for a large-scale assembled boiler, which enables the boiler equipment to be conveniently transported and the manufacturing cost to be reduced, has become a significant problem to be solved in the field at present.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: in order to overcome the deficiencies in the prior art, the utility model provides a double-deck many convection currents of large-scale equipment boiler are heated device and large-scale equipment boiler, and the technical problem that solve makes convenient transportation of boiler equipment and manufacturing cost reduce.
The technical scheme is as follows: in order to achieve the above object, the utility model adopts the following technical scheme:
the utility model aims at providing a double-layer multi-convection heating device of a large-scale assembled boiler, which comprises a convection section, wherein the convection section is positioned behind a hearth, and the interior of the convection section is communicated with a hearth outlet positioned at the upper part of the hearth; the convection section comprises at least 2 convection heating units, the convection heating units are adjacently arranged along the length direction of the boiler, each convection heating unit is internally provided with an upper layer of coiled pipe and a lower layer of coiled pipe, and the coiled pipes are horizontally arranged; the upper part or the lower part of the convection heating unit is provided with a flue gas channel, the convection heating unit is communicated with the adjacent convection heating unit through the flue gas channel, and the flue gas channel forms an S-shaped flue gas channel.
Optionally, the outer peripheries of the coiled pipes are provided with outer steel frames, and the upper and lower outer steel frames in the single convection heating unit are fixedly connected.
Optionally, the serpentine pipes each have an inlet header located at a lower portion and an outlet header located at an upper portion, and the inlet header and the outlet header are located at two sides of the boiler in the width direction, respectively.
Optionally, the inlet header is connected in parallel with the working medium input pipe through a pipeline, and the outlet header is connected in parallel with the working medium output pipe through a pipeline.
Optionally, the upper or lower part of the end of the convection section is provided with a flue gas outlet.
Optionally, the outer walls of the bends of the serpentine tubes are closely and fixedly connected with each other.
Optionally, the width Y of each convection heating unit does not exceed 2.5 meters.
Optionally, the convection heating unit includes a first convection heating unit and a second convection heating unit, and the first convection heating unit includes a first serpentine pipe located at an upper layer and a second serpentine pipe located at a lower layer; the second convection heating unit comprises a fourth coiled pipe positioned at the upper layer and a third coiled pipe positioned at the lower layer.
Another object of the present invention is to provide a large-scale assembled boiler, which comprises the above double-layer multi-convection heating device.
Has the advantages that: compared with the prior art, the utility model provides a pair of double-deck many convection currents of large-scale equipment boiler are heated device, its convection current section can divide into a plurality of parts and transport alone, has solved the problem of super wide transportation, falls into a plurality of parts and makes the manufacturing cost that has also significantly reduced alone simultaneously, has promoted the practicality greatly.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a front view of a double-layered multi-convection heating device of a large-scale assembled boiler;
FIG. 2 is a left side view of a double-layered multi-convection heating apparatus of a large-scale assembled boiler;
FIG. 3 is a top view of a double-layered multi-convection heating apparatus of a large-scale assembled boiler;
in the figure: 1. a flue gas inlet; 2. a hearth; 3. a first serpentine tube; 4. a second serpentine tube; 5. a third serpentine tube; 6. a fourth serpentine tube; 7. an inlet header; 8. an outlet header; 9. a hearth outlet; 10. a flue gas channel; 11. and a flue gas outlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1, the double-layer multi-convection heating device for a large-scale assembled boiler comprises a convection section, wherein the convection section is positioned behind a hearth 2, and the inside of the convection section is communicated with a hearth outlet 9 positioned at the upper part of the hearth 2; the convection section comprises at least 2 convection heating units, the convection heating units are adjacently arranged along the length direction of the boiler, each convection heating unit is internally provided with an upper layer of coiled pipe and a lower layer of coiled pipe, and the coiled pipes are horizontally arranged; the upper part or the lower part of the convection heating unit is provided with a flue gas channel 10, the convection heating units are adjacent and communicated through the flue gas channel 10, and the flue gas channel 10 forms an S-shaped flue gas channel. Optionally, the number of convection heating units can be flexibly arranged according to the overall heat absorption requirement of the boiler.
As an alternative embodiment, as shown in fig. 1, the convection heating unit includes a first convection heating unit and a second convection heating unit, the first convection heating unit includes a first serpentine tube 3 at an upper layer and a second serpentine tube 4 at a lower layer; the second convection heating unit includes a fourth serpentine tube 6 at an upper layer and a third serpentine tube 5 at a lower layer. The convection section is divided into 4 parts, which can be respectively and independently transported, solves the problem of ultra-wide transportation, and reduces the manufacturing cost.
As an alternative embodiment, as shown in fig. 1, the first serpentine tube 3, the second serpentine tube 4, the third serpentine tube 5 and the fourth serpentine tube 6 each have an outer steel frame on the outer periphery thereof, the first serpentine tube 3 is fixedly connected to the outer steel frame of the second serpentine tube 4, and the third serpentine tube 5 is fixedly connected to the outer steel frame of the fourth serpentine tube 6. After the convection section reaches an installation site, 4 parts of the convection section can be hoisted to a preset position on the site, then the outer steel frames are fixedly connected together in a welding or riveting mode, furnace walls built by concrete are used for separating adjacent convection heating units, a section of flue gas channel 10 is reserved at the lower part of the furnace wall between the first convection heating unit and the second convection heating unit, and flue gas flows in the convection section through the flue gas channel 10 to form an S-shaped flue gas channel. It can be known that, in another embodiment, when the convection heating units are three or more, a furnace wall is poured between the first convection heating unit and the second convection heating unit, and after a section of flue gas channel 10 is reserved at the lower part, the furnace wall is continuously poured between the second convection heating unit and the third convection heating unit, and a section of flue gas channel 10 is reserved at the upper part, and so on, so as to form an S-shaped flue gas channel in the convection section.
As an alternative embodiment, as shown in fig. 2 and 3, each of the first, second, third and fourth serpentine tubes 3, 4, 5 and 6 has an inlet header 7 at a lower portion and an outlet header 8 at an upper portion, and the inlet header 7 and the outlet header 8 are respectively located at both sides in the width W direction of the boiler. The header of the boiler is used for reducing thermal deviation, so that the heat absorption and flow of working media, the cooling of the boiler and the thermal efficiency of the boiler are optimized and improved; the specification size, the number of the tubes and the arrangement mode of the tubes of the sections of the upper part, the middle part and the lower part of the boiler are different, and the header is responsible for connecting the sections, so that the smooth circulation of the working medium is ensured.
As an alternative embodiment, the inlet header 7 is connected in parallel by means of pipes to the working medium inlet pipe and the outlet header 8 is connected in parallel by means of pipes to the working medium outlet pipe. The working medium is a working substance for realizing heat and power conversion, and various heat engines or thermal equipment are medium substances for finishing the mutual conversion of heat energy and mechanical energy, and the working medium is commonly as follows: oil, combustion gas, water vapor, refrigerant, air, and the like.
As an alternative, the bends of the serpentine are secured in close proximity to one another as shown in fig. 2. The close proximity of the bends enhances the overall rigidity of the heated unit.
As an alternative embodiment, as shown in fig. 1, the width Y of each convection heating unit does not exceed 2.5 meters, which solves the problem of ultra-wide transportation.
The working principle is as follows:
(1) the working medium flows to each parallel inlet header 7 through the working medium input pipe and enters the serpentine pipe;
(2) flue gas generated by combustion of fuel on a fire grate enters the lower part of a hearth 2 through a flue gas inlet 1, and enters a convection section from a hearth outlet 9 after radiation heat exchange of the hearth 2;
(3) the flue gas flows along an S-shaped flue gas passage in the convection section, specifically, the flue gas firstly enters a first convection heating unit to exchange heat with a working medium in a first coiled pipe 3 positioned on the upper layer, then flows downwards to exchange heat with a working medium in a second coiled pipe 4 positioned on the lower layer, then enters a second convection heating unit from a flue gas passage 10 on the lower part of the first convection heating unit to exchange heat with a working medium in a third coiled pipe 5 positioned on the lower layer, and then flows upwards to exchange heat with a working medium in a fourth coiled pipe 6 positioned on the upper layer, so that the cooling of the flue gas is realized;
(4) after heat exchange, the working medium is discharged from the outlet header 8 connected in parallel through a working medium output pipe; the flue gas is discharged from a flue gas outlet 11 at the upper part of the second convection heating unit for subsequent treatment, such as waste heat treatment.
To sum up, the utility model provides a pair of double-deck many convection currents of large-scale equipment boiler are heated device, its convection current section can divide into a plurality of parts and transport alone, has solved the problem of super wide transportation, falls into a plurality of parts and makes the manufacturing cost that has also significantly reduced alone simultaneously, has promoted the practicality greatly.
The invention also provides a large-scale assembled boiler which comprises the double-layer multi-convection heating device, wherein flue gas generated by combustion of fuel on a fire grate enters the lower part of the hearth through a flue gas inlet, enters the convection section from an outlet at the upper part of the hearth after radiant heat exchange of the hearth, is subjected to heat exchange and cooling through the double-layer multi-convection heating device, and is finally discharged from a flue gas outlet of the convection section for subsequent treatment, such as waste heat treatment.
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (9)
1. The utility model provides a double-deck many convection currents of large-scale equipment boiler are heated device, includes the convection current section, its characterized in that: the convection section is positioned behind the hearth (2), and the interior of the convection section is communicated with a hearth outlet (9) positioned at the upper part of the hearth (2);
the convection section comprises at least 2 convection heating units, the convection heating units are adjacently arranged along the length direction of the boiler, each convection heating unit is internally provided with an upper layer of coiled pipe and a lower layer of coiled pipe, and the coiled pipes are horizontally arranged;
the upper portion or the lower part of the convection heating unit is provided with a flue gas channel (10), the convection heating unit is communicated with the flue gas channel (10) in an adjacent mode, and the flue gas channel (10) forms an S-shaped flue gas channel.
2. The double-layer multi-convection heating device for the large-scale assembled boiler according to claim 1, wherein: the periphery of the coiled pipe is provided with an outer steel frame, and the upper and lower outer steel frames in the convection heating unit are fixedly connected.
3. The double-layer multi-convection heating device for the large-scale assembled boiler according to claim 1, wherein: the coiled pipes are provided with inlet headers (7) located at the lower part and outlet headers (8) located at the upper part, and the inlet headers (7) and the outlet headers (8) are located on two sides of the boiler in the width direction respectively.
4. The double-layer multi-convection heating device for the large-scale assembled boiler according to claim 3, characterized in that: the inlet header (7) is connected with the working medium input pipe in parallel through a pipeline, and the outlet header (8) is connected with the working medium output pipe in parallel through a pipeline.
5. The double-layer multi-convection heating device for the large-scale assembled boiler according to claim 1, wherein: the upper or lower part of the end of the convection section is provided with a flue gas outlet (11).
6. The double-layer multi-convection heating device for the large-scale assembled boiler according to claim 1, wherein: the outer walls of the elbows of the serpentine tubes are tightly and fixedly connected.
7. The double-layer multi-convection heating device for the large-scale assembled boiler according to claim 1, wherein: the width Y of each convection heating unit does not exceed 2.5 meters.
8. The double-layer multi-convection heating device for the large-scale assembled boiler according to any one of claims 1 to 7, wherein: the convection heating unit comprises a first convection heating unit and a second convection heating unit, and the first convection heating unit comprises a first coiled pipe (3) positioned at the upper layer and a second coiled pipe (4) positioned at the lower layer; the second convection heating unit comprises a fourth coiled pipe (6) positioned at the upper layer and a third coiled pipe (5) positioned at the lower layer.
9. A large scale package boiler comprising the double-layered multi-convection heating apparatus according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120869976.8U CN215062182U (en) | 2021-04-26 | 2021-04-26 | Double-layer multi-convection heating device of large-scale assembled boiler and large-scale assembled boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120869976.8U CN215062182U (en) | 2021-04-26 | 2021-04-26 | Double-layer multi-convection heating device of large-scale assembled boiler and large-scale assembled boiler |
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| Publication Number | Publication Date |
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| CN215062182U true CN215062182U (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120869976.8U Active CN215062182U (en) | 2021-04-26 | 2021-04-26 | Double-layer multi-convection heating device of large-scale assembled boiler and large-scale assembled boiler |
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|---|---|
| CN (1) | CN215062182U (en) |
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2021
- 2021-04-26 CN CN202120869976.8U patent/CN215062182U/en active Active
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