CN204629466U - A kind of heated face structure with reheat vapor cycle fluidized-bed combustion boiler - Google Patents
A kind of heated face structure with reheat vapor cycle fluidized-bed combustion boiler Download PDFInfo
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- CN204629466U CN204629466U CN201520347056.4U CN201520347056U CN204629466U CN 204629466 U CN204629466 U CN 204629466U CN 201520347056 U CN201520347056 U CN 201520347056U CN 204629466 U CN204629466 U CN 204629466U
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- high temperature
- coiled pipe
- pipe group
- face structure
- bed combustion
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Abstract
With a heated face structure for reheat vapor cycle fluidized-bed combustion boiler, it relates to a kind of heated face structure, is specifically related to a kind of heated face structure with reheat vapor cycle fluidized-bed combustion boiler.The utility model in order to the heated face structure solving existing band reheat vapor cycle fluidized-bed combustion boiler unreasonable, cause operating cost to increase, the problem that boiler operatiopn security is poor.The utility model comprises multiple high temperature reheater coiled pipe group and multiple high temperature superheater coiled pipe group, and multiple high temperature reheater coiled pipe group and multiple high temperature superheater group coiled pipe group are crisscross arranged in boiler back end ductwork.The utility model is applied to field of boilers.
Description
Technical field
The utility model relates to a kind of heated face structure, is specifically related to a kind of heated face structure with reheat vapor cycle fluidized-bed combustion boiler, belongs to field of boilers.
Background technology
Since the eighties in 20th century, CFBB obtains swift and violent development in China, and the power plant that China is a lot of and heat supply factory all use this kind of type of furnace.CFBB has economize energy, stable, fuel availability is high and be applicable to the features such as inferior fuel.But the problem of the high temperature reheater emerged in operation distortion be arranged in burner hearth of band reheat vapor cycle fluidized-bed combustion boiler always is the problem that everybody studies.High temperature reheater is arranged in upper furnace by the fluidized-bed combustion boiler of conventional belt reheater, as curtain wall.The problem that this kind of arrangement brings: 1, because cigarette temperature in burner hearth is higher, the reheater heating surface material be arranged in burner hearth is selected higher.2, because the pipe material of reheater, Temperature of Working are different from water screen tube, cause its swell increment and water-cooling wall inconsistent, deal with operationally reheater tube panel improperly and easily produce distortion, in structure, process is complicated, there is potential safety hazard in boiler operatiopn.
Utility model content
The utility model is that to solve the heated face structure of existing band reheat vapor cycle fluidized-bed combustion boiler unreasonable, causes operating cost to increase, the problem that boiler operatiopn safety-type is poor, and then proposes a kind of heated face structure with reheat vapor cycle fluidized-bed combustion boiler.
The utility model is the technical scheme taked that solves the problem: the utility model comprises multiple high temperature reheater coiled pipe group and multiple high temperature superheater coiled pipe group, and multiple high temperature reheater coiled pipe group and multiple high temperature superheater coiled pipe group are crisscross arranged in boiler back end ductwork.
The beneficial effects of the utility model are: the utility model Appropriate application CFBB back-end ductwork space, high temperature reheater in burner hearth is arranged in back-end ductwork, reduce the material of reheater pipe, strengthen the heat exchange between reheater and superheater, provide cost savings, improve security and the boiler equipment availability factor of boiler operatiopn simultaneously.The utility model takes full advantage of the space between high temperature superheater S-shaped tube panel, effectively utilizes back-end ductwork space.Reduce the circulation area of high temperature superheater place flue gas simultaneously.Thus improve the flow velocity of flue gas.High temperature reheater and high temperature superheater interlaced arrangement, its material is selected consistent with it, and its expansion is simultaneously synchronous with superheater, and in structure, process is simple, and operating safety factor improves greatly.It is simple that the utility model has pattern handling, be convenient to design, produce and install, and the feature such as cost is low, effectively can solve the problems such as band reheat vapor cycle fluidized-bed combustion boiler high temperature reheater emerged in operation distortion, reduce operation and maintenance cost, improve boiler equipment availability factor, improve security and the economy of boiler operatiopn, its economic benefit produced is very significant.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model, Fig. 2 be in Fig. 1 A-A to sectional view.
Detailed description of the invention
Detailed description of the invention one: composition graphs 1 and Fig. 2 illustrate present embodiment, a kind of heated face structure with reheat vapor cycle fluidized-bed combustion boiler described in present embodiment comprises multiple high temperature reheater coiled pipe group 1 and multiple high temperature superheater coiled pipe group 2, and multiple high temperature reheater coiled pipe group 1 and multiple high temperature superheater coiled pipe group 2 are crisscross arranged in boiler back end ductwork 3.
Detailed description of the invention two: composition graphs 1 and Fig. 2 illustrate present embodiment, each high temperature reheater coiled pipe group 1 of a kind of heated face structure with reheat vapor cycle fluidized-bed combustion boiler described in present embodiment comprises multiple high temperature reheater coiled pipe group, described high temperature reheater coiled pipe group 1 by multiple high temperature reheater snake-like tube row 1-1 spaced set successively from top to bottom, high temperature reheater by described multiple high temperature reheater coiled pipe groups 1 by a left side to forming by being arranged side by side successively.
Detailed description of the invention three: composition graphs 1 and Fig. 2 illustrate present embodiment, each high temperature superheater coiled pipe group 2 of a kind of heated face structure with reheat vapor cycle fluidized-bed combustion boiler described in present embodiment comprises multiple high temperature superheater coiled pipe group, the high temperature superheater coiled pipe group 2 told is by multiple high temperature superheater snake-like tube row 2-1 spaced set successively from top to bottom, and high temperature superheater is arranged side by side successively from left to right by described multiple high temperature superheater coiled pipe groups 2 and forms.
Operation principle
According to boiler heat-transfer formula: Q=K* △ T*H/Bj
K: heat transfer coefficient;
△ T: heat transfer temperature difference;
H: heat exchange area;
Bj: calculated fuel consumption
Coefficient K in above formula and flue gas flow rate W linear proportional relation, velocity of flue gas increases, and Coefficient K is larger.When heat transfer temperature difference △ T, heat exchange area H, calculated fuel consumption Bj remain unchanged, Coefficient K increases, and fume side caloric receptivity Q is increased.Keep fume side caloric receptivity Q to remain unchanged, can heating surface area H be reduced, thus decrease the steel consumption of boiler.In addition, high temperature reheater and high temperature superheater interlaced arrangement, its material is selected consistent with it, and its expansion is simultaneously synchronous with superheater, and in structure, process is simple, and operating safety factor improves greatly.
Claims (3)
1. the heated face structure with reheat vapor cycle fluidized-bed combustion boiler, it is characterized in that: described a kind of heated face structure with reheat vapor cycle fluidized-bed combustion boiler comprises multiple high temperature reheater coiled pipe group (1) and multiple high temperature superheater coiled pipe group (2), multiple high temperature reheater coiled pipe group (1) and multiple high temperature superheater coiled pipe group (2) are crisscross arranged in boiler back end ductwork (3).
2. a kind of heated face structure with reheat vapor cycle fluidized-bed combustion boiler according to claim 1, it is characterized in that: each high temperature reheater coiled pipe group (1) comprises multiple high temperature reheater snake-like tube row (1-1), multiple described high temperature reheater coiled pipe group (1) is equidistantly arranged from left to right successively, composition high temperature reheater.
3. a kind of heated face structure with reheat vapor cycle fluidized-bed combustion boiler according to claim 2, it is characterized in that: each high temperature superheater coiled pipe group (2) comprises multiple high temperature superheater snake-like tube row (2-1), multiple described Superheater tube row (2) is equidistantly arranged from left to right, composition high temperature superheater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520347056.4U CN204629466U (en) | 2015-05-26 | 2015-05-26 | A kind of heated face structure with reheat vapor cycle fluidized-bed combustion boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520347056.4U CN204629466U (en) | 2015-05-26 | 2015-05-26 | A kind of heated face structure with reheat vapor cycle fluidized-bed combustion boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204629466U true CN204629466U (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520347056.4U Expired - Fee Related CN204629466U (en) | 2015-05-26 | 2015-05-26 | A kind of heated face structure with reheat vapor cycle fluidized-bed combustion boiler |
Country Status (1)
| Country | Link |
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| CN (1) | CN204629466U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819461A (en) * | 2015-05-26 | 2015-08-05 | 哈尔滨哈锅锅炉工程技术有限公司 | Heating surface structure with reheat cycle fluidized bed boiler |
-
2015
- 2015-05-26 CN CN201520347056.4U patent/CN204629466U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819461A (en) * | 2015-05-26 | 2015-08-05 | 哈尔滨哈锅锅炉工程技术有限公司 | Heating surface structure with reheat cycle fluidized bed boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20210526 |
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| CF01 | Termination of patent right due to non-payment of annual fee |