CN215062181U - Double-layer multi-hearth heating device of large-scale assembled boiler and large-scale assembled boiler - Google Patents
Double-layer multi-hearth heating device of large-scale assembled boiler and large-scale assembled boiler Download PDFInfo
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- CN215062181U CN215062181U CN202120869904.3U CN202120869904U CN215062181U CN 215062181 U CN215062181 U CN 215062181U CN 202120869904 U CN202120869904 U CN 202120869904U CN 215062181 U CN215062181 U CN 215062181U
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Abstract
The utility model discloses a double-layer multi-hearth heating device of a large-scale assembled boiler, which comprises a hearth and a convection section, wherein the hearth is positioned in front of the convection section, the upper part of the tail end of the hearth is provided with a hearth outlet, and the hearth outlet is communicated with the inner space of the convection section; the hearth comprises at least 2 hearth heating units, the hearth heating units are adjacently arranged along the length direction of the boiler, and an upper layer square coil pipe and a lower layer square coil pipe are arranged in each hearth heating unit; the upper part of each hearth heating unit is provided with a flue gas channel, the adjacent hearth heating units are communicated through the flue gas channels, and the flue gas channels are horizontally level with the hearth outlet to form a horizontal flue gas passage; the bottom of the hearth is provided with a flue gas inlet which is communicated with the bottom of the hearth heating unit. The utility model provides a pair of double-deck many furnace of large-scale equipment boiler is heated device, this furnace can fall into a plurality of parts and transport alone, has solved the difficult problem of transportation, has also reduced manufacturing cost simultaneously.
Description
Technical Field
The utility model belongs to the technical field of the boiler, concretely relates to double-deck many furnace of large-scale equipment boiler is 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, electric energy, heat energy of high-temperature flue gas and the like in fuel, 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, boilers are developed in large scale, the tonnage is larger and larger, the appearance and the size of a hearth are increased continuously, grates are wider and wider, the conventional single-hearth arrangement mode is more and more difficult, the manufacturing cost of the boilers is higher and higher, and meanwhile, the ultra-wide transportation of the boilers is inconvenient.
Therefore, research and development of a double-layer multi-hearth 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 furnace of the double-deck three furnace of large-scale equipment boiler is heated unit 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-hearth heating device of a large-scale assembled boiler, which comprises a hearth and a convection section, wherein the hearth is positioned in front of the convection section, the upper part of the tail end of the hearth is provided with a hearth outlet, and the hearth outlet is communicated with the inner space of the convection section; the hearth comprises at least 2 hearth heating units, the hearth heating units are adjacently arranged along the length direction of the boiler, and an upper layer square coil pipe and a lower layer square coil pipe are arranged in each hearth heating unit; the upper part of each hearth heating unit is provided with a flue gas channel, the adjacent hearth heating units are communicated through the flue gas channels, and the flue gas channels are horizontally level with the hearth outlet to form a horizontal flue gas passage; the bottom of the hearth is provided with a flue gas inlet which is communicated with the bottom of the hearth heating unit.
Optionally, the outer peripheries of the square coil pipes are provided with outer steel frames, and an upper outer steel frame and a lower outer steel frame in the single heating unit of the hearth are fixedly connected.
Optionally, the square coil 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 width of each hearth heating unit is not more than 2.5 m.
Optionally, the square coil pipe is horizontally arranged.
Optionally, the hearth includes a first hearth heating unit, a second hearth heating unit and a third hearth heating unit, and the first hearth heating unit includes a first square coil pipe located at an upper layer and a second square coil pipe located at a lower layer; the second hearth heating unit comprises a third square coil pipe positioned on the upper layer and a fourth square coil pipe positioned on the lower layer; the third hearth heating unit comprises a fifth square coil pipe positioned on the upper layer and a sixth square coil pipe positioned on the lower layer.
Another object of the utility model is to provide a large-scale equipment boiler, including above-mentioned double-deck many furnace heated device.
Has the advantages that: compared with the prior art, the utility model provides a pair of double-deck many furnace of large-scale equipment boiler is heated device under the condition that does not influence furnace heat absorption requirement, and this furnace can fall into a plurality of parts and transport alone, has solved the problem of super wide transportation, falls into a plurality of parts and makes alone simultaneously and has also reduced manufacturing cost, 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-hearth heating device of a large-scale assembled boiler;
FIG. 2 is a left side view of a double-layered multi-hearth heating apparatus of a large-scale assembled boiler;
FIG. 3 is a top view of a double-layered multi-hearth heating device of a large-scale assembled boiler;
in the figure: 1. a hearth; 2. a convection section; 3. a first square coil pipe; 4. a second square coil pipe; 5. a third square coil pipe; 6. a fourth square coil pipe; 7. a fifth square coil pipe; 8. a sixth square coil pipe; 9. a flue gas inlet; 10. a flue gas channel; 11. a hearth outlet; 12. an inlet header; 13. and an outlet header.
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-hearth heating device for the large-scale assembled boiler comprises a hearth 1 and a convection section 2, wherein the hearth 1 is positioned in front of the convection section 2, a hearth outlet 11 is arranged at the upper part of the tail end of the hearth 1, and the hearth outlet 11 is communicated with the inner space of the convection section 2; the hearth 1 comprises at least 2 hearth heating units, the hearth heating units are adjacently arranged along the length direction of the boiler, an upper layer of square coil pipe and a lower layer of square coil pipe are arranged in each hearth heating unit, and the square coil pipes are horizontally arranged; the upper part of each hearth heating unit is provided with a flue gas channel 10, the adjacent hearth heating units are communicated through the flue gas channels 10, and the flue gas channels 10 are horizontally level with the hearth outlet 11 to form a horizontal flue gas passage; the bottom of the hearth 1 is provided with a flue gas inlet 9, and the flue gas inlet 9 is communicated with the bottom of the hearth heating unit. Optionally, the number of the hearth heating units can be flexibly arranged according to the integral heat absorption requirement of the boiler.
As an alternative embodiment, as shown in fig. 1, the furnace 1 includes a first furnace heating unit, a second furnace heating unit and a third furnace heating unit, the first furnace heating unit includes a first square coil pipe 3 located at an upper layer and a second square coil pipe 4 located at a lower layer; the second hearth heating unit comprises a third square coil 5 positioned on the upper layer and a fourth square coil 6 positioned on the lower layer; the third hearth heating unit comprises a fifth square coil pipe 7 positioned at the upper layer and a sixth square coil pipe 8 positioned at the lower layer. The hearth is divided into 6 parts, so that the hearth can be respectively and independently transported, the problem of ultra-wide transportation is solved, and the manufacturing cost is reduced.
As an alternative embodiment, as shown in fig. 1 and 2, the outer steel frames are respectively arranged on the peripheries of the square coil pipes, the first square coil pipe 3 is fixedly connected with the outer steel frame of the second square coil pipe 4, the third square coil pipe 5 is fixedly connected with the outer steel frame of the fourth square coil pipe 6, and the fifth square coil pipe 7 is fixedly connected with the outer steel frame of the sixth square coil pipe 8. After the furnace wall reaches an installation site, 6 parts of the furnace hearth 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, the adjacent furnace hearth heating units are separated by the furnace wall built by concrete, after a section of flue gas channel 10 is reserved on the upper part of the furnace wall between the first furnace hearth heating unit and the second furnace hearth heating unit, the furnace wall is continuously poured between the second furnace hearth heating unit and the third furnace hearth heating unit, a section of flue gas channel 10 is reserved on the upper part of the furnace wall, when the number of the furnace hearth heating units is more than 3, the rest is done in the same way, and a horizontal flue gas channel is formed on the upper part in the furnace hearth.
As an alternative embodiment, as shown in fig. 2 and 3, the square coils each have an inlet header 12 at a lower portion and an outlet header 13 at an upper portion, and the inlet header 12 and the outlet header 13 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 used for connecting the sections, so that the smooth circulation of the working medium is ensured.
As an alternative embodiment, the inlet header 12 is connected in parallel by means of pipes to the working medium inlet pipe and the outlet header 13 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 embodiment, as shown in FIG. 3, the width Y of each hearth heat receiving unit does not exceed 2.5 m. The problem of super wide transportation is solved.
The working principle is as follows:
(1) the working medium flows to each parallel inlet header 12 through the working medium input pipe and enters the square coil pipe;
(2) flue gas generated by combustion of fuel on a fire grate respectively enters the lower parts of the first hearth heating unit, the second hearth heating unit and the third hearth heating unit through a flue gas inlet 9, and simultaneously exchanges heat with working media in the square coil pipes of the lower parts of the first hearth heating unit, the second hearth heating unit and the third hearth heating unit, then flows upwards to exchange heat with the working media in the square coil pipes on the upper layer, and then flows towards the direction of a hearth outlet 11 on the upper part of the third hearth heating unit together through a flue gas channel 10 on the upper parts of the first hearth heating unit, the second hearth heating unit and the third hearth heating unit.
(3) After the hearth is subjected to heat exchange by the heating unit, the working medium is discharged from the outlet header 13 connected in parallel through a working medium output pipe; the flue gas flows into the convection section from the furnace outlet 11 at the upper part of the third furnace heated unit for subsequent treatment, such as heat exchange of the convection section.
To sum up, the utility model provides a pair of double-deck many furnace of large-scale equipment boiler is heated device, its furnace can fall into a plurality of parts and transport alone, has solved the problem of super wide transportation, falls into a plurality of parts and makes also greatly reduced manufacturing cost alone simultaneously, has promoted the practicality greatly.
The invention also provides a large-scale assembled boiler which comprises the double-layer multi-hearth 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 the hearth outlet at the upper part of the hearth after being subjected to heat exchange and cooling by the double-layer multi-hearth heating device, is subjected to heat exchange and cooling by the convection heating unit, and is finally discharged from the 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 (8)
1. The utility model provides a double-deck many hearths of large-scale equipment boiler heating device, includes furnace (1) and convection current section (2), furnace (1) is located before convection current section (2), its characterized in that: the upper part of the tail end of the hearth (1) is provided with a hearth outlet (11), and the hearth outlet (11) is communicated with the inner space of the convection section (2);
the hearth (1) comprises at least 2 hearth heating units, the hearth heating units are adjacently arranged along the length direction of the boiler, and an upper layer of square coil pipe and a lower layer of square coil pipe are arranged in each hearth heating unit;
the upper part of each hearth heating unit is provided with a flue gas channel (10), the adjacent hearth heating units are communicated through the flue gas channels (10), and the flue gas channels (10) are horizontally aligned with the hearth outlet (11) to form a horizontal flue gas passage;
the bottom of the hearth (1) is provided with a flue gas inlet (9), and the flue gas inlet (9) is communicated with the bottom of the hearth heating unit.
2. The large-scale assembled boiler double-layer multi-hearth heating device according to claim 1, characterized in that: the periphery of the square coil pipe is provided with outer steel frames, and an upper outer steel frame and a lower outer steel frame in the heating unit of the single hearth are fixedly connected.
3. The large-scale assembled boiler double-layer multi-hearth heating device according to claim 1, characterized in that: the square coil pipes are respectively provided with an inlet header (12) positioned at the lower part and an outlet header (13) positioned at the upper part, and the inlet header (12) and the outlet header (13) are respectively positioned at two sides of the boiler in the width direction.
4. The large-scale assembled boiler double-layer multi-hearth heating device according to claim 3, characterized in that: the inlet header (12) is connected in parallel with the working medium input pipe through a pipeline, and the outlet header (13) is connected in parallel with the working medium output pipe through a pipeline.
5. The large-scale assembled boiler double-layer multi-hearth heating device according to claim 1, characterized in that: the width of each hearth heating unit does not exceed 2.5 meters.
6. The large-scale assembled boiler double-layer multi-hearth heating device according to claim 1, characterized in that: the square coil pipe is horizontally arranged.
7. The double-layer multi-hearth heating device for the large-scale assembled boiler according to any one of claims 1 to 6, characterized in that: the hearth (1) comprises a first hearth heating unit, a second hearth heating unit and a third hearth heating unit, wherein the first hearth heating unit comprises a first square coil pipe (3) positioned on the upper layer and a second square coil pipe (4) positioned on the lower layer; the second hearth heating unit comprises a third square coil pipe (5) positioned on the upper layer and a fourth square coil pipe (6) positioned on the lower layer; the third hearth heating unit comprises a fifth square coil pipe (7) positioned on the upper layer and a sixth square coil pipe (8) positioned on the lower layer.
8. A large scale package boiler, characterized in that it comprises the double-deck multiple-hearth heating apparatus according to any one of claims 1-6.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120869904.3U CN215062181U (en) | 2021-04-26 | 2021-04-26 | Double-layer multi-hearth heating device of large-scale assembled boiler and large-scale assembled boiler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120869904.3U CN215062181U (en) | 2021-04-26 | 2021-04-26 | Double-layer multi-hearth heating device of large-scale assembled boiler and large-scale assembled boiler |
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| CN215062181U true CN215062181U (en) | 2021-12-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113108301A (en) * | 2021-04-26 | 2021-07-13 | 江苏太湖锅炉股份有限公司 | Double-layer multi-hearth heating device for large-scale assembled boiler and working method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113108301A (en) * | 2021-04-26 | 2021-07-13 | 江苏太湖锅炉股份有限公司 | Double-layer multi-hearth heating device for large-scale assembled boiler and working method thereof |
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