CN202581292U - Labyrinth sealing expansion joint for hearth outlet of circulating fluidized bed boiler - Google Patents
Labyrinth sealing expansion joint for hearth outlet of circulating fluidized bed boiler Download PDFInfo
- Publication number
- CN202581292U CN202581292U CN 201220213402 CN201220213402U CN202581292U CN 202581292 U CN202581292 U CN 202581292U CN 201220213402 CN201220213402 CN 201220213402 CN 201220213402 U CN201220213402 U CN 201220213402U CN 202581292 U CN202581292 U CN 202581292U
- Authority
- CN
- China
- Prior art keywords
- expansion joint
- flue
- separator inlet
- furnace outlet
- hearth outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model relates to a labyrinth sealing expansion joint for a hearth outlet of a circulating fluidized bed boiler. An expansion joint is arranged between a hearth outlet flue and a separator inlet flue. The labyrinth sealing expansion joint is characterized in that the hearth outlet flue is embedded into the separator inlet flue; and a compressible and stretchable high-temperature heat insulation sleeve is embedded between the hearth outlet flue and the separator inlet flue. The expansion joint is arranged outside the hearth outlet flue, one side of the expansion joint is connected with the separator inlet flue, and the other side of the expansion joint is connected with the hearth outlet flue through a sealing steel plate, so that the labyrinth sealing expansion joint forms a labyrinth sealing environment; and in addition, the expansion joint does not directly contact a flue gas, so that the service life of the expansion joint can be effectively prolonged.
Description
Technical field
The utility model relates to the fluidized-bed combustion boiler technical field, relates in particular to the sealed expansion joint between a kind of boiler furnace outlet flue and separator inlet flue duct.
Background technology
Furnace outlet place sealed expansion joint is the vitals of CFBB, and it is mainly by jacket, and stud, metal framework, sealing steel plate are formed.Expansion joint is between furnace outlet and separator inlet flue duct, and when boiler normally moved, flue gas was little negative pressure in the flue at furnace outlet place, and flue-gas temperature is 900 degree, and flue gas contains the ash concentration height.If the design of the expansion joint here is bad, expansion joint is burnt easily, and has the high temperature flying dust to spill, and influences boiler operatiopn safety.
Expansion joint between furnace outlet traditionally and the separator import, a side connects the furnace outlet flue, and a side is connected to the separator inlet flue duct.Expansion joint directly contacts with high-temperature flue gas, and expansion joint is as easy as rolling off a log to be burnt, be out of shape.And cause leaking grey.
Summary of the invention
The purpose of the utility model is the defective that exists to background technology; Design a kind of boiler hearth of circulating fluidized bed exit labyrinth sealing expansion joint; Connect furnace outlet and separator import to reach; When better absorbing expansion and the sealing between the two, prolong the service life of expansion joint.
The above-mentioned technical problem of the utility model mainly is able to solve through following technical proposals: the labyrinth sealing expansion joint in a kind of boiler hearth of circulating fluidized bed exit; Between furnace outlet flue and separator inlet flue duct, expansion joint is housed, it is characterized in that: said furnace outlet flue is embedded in the separator inlet flue duct; Embed the high-temperature heat insulation cover of compressible stretching between furnace outlet flue and the separator inlet flue duct; Said expansion joint is arranged in furnace outlet flue outside; One side of said expansion joint is connected with the separator inlet flue duct; Opposite side is connected with the furnace outlet flue through the sealing steel plate that is installed in the expansion joint side, makes and forms mazy sealed environment between expansion joint and furnace outlet flue and the separator inlet flue duct.
The beneficial effect of the utility model is:
Expansion joint is arranged in furnace outlet flue outside; One side of expansion joint is connected with the separator inlet flue duct; Opposite side is connected with the furnace outlet flue through the sealing steel plate, because expansion joint does not directly contact with high-temperature flue gas, has also formed mazy sealed environment; So both can improve sealing effectiveness, also prolong the service life of expansion joint.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the utility model.
Description of reference numerals: 1, furnace outlet flue, 2, the separator inlet flue duct, 3, the expansion joint body, 4, jacket, 5, stud, 6, the sealing steel plate, 7, metal framework.
The specific embodiment
Below through embodiment and combine accompanying drawing, the technical scheme of the utility model is further specified.
Embodiment:
A kind of boiler hearth of circulating fluidized bed exit labyrinth sealing expansion joint as shown in the figure; Furnace outlet flue 1 is embedded in the separator inlet flue duct 2; Embed the high temperature resistant jacket 4 of compressible stretching between furnace outlet flue 1 and the separator inlet flue duct 2, expansion joint 3 is arranged in furnace outlet flue outside, does not directly contact with high-temperature flue gas; Expansion joint 3 comprises jacket 4; Metal framework 7 connects with stud 5 on the metal framework, and metal framework leans on furnace outlet flue side to be connected with the sealing steel plate; One side of expansion joint 3 is connected with separator inlet flue duct 2; Opposite side is connected with furnace outlet flue 1 through the sealing steel plate 6 that is installed in the expansion joint side, makes and forms a mazy sealed environment between expansion joint and furnace outlet flue and the separator inlet flue duct.Because expansion joint does not directly contact with flue gas, can effectively prolong the service life of expansion joint simultaneously.
Among the figure arrow points be MEDIA FLOW to.
Claims (1)
1. a boiler hearth of circulating fluidized bed exit labyrinth sealing expansion joint is equipped with expansion joint between furnace outlet flue and separator inlet flue duct, it is characterized in that: said furnace outlet flue is embedded in the separator inlet flue duct; Embed the high-temperature heat insulation cover of compressible stretching between furnace outlet flue and the separator inlet flue duct; Said expansion joint is arranged in furnace outlet flue outside, and a side of said expansion joint is connected with the separator inlet flue duct, and opposite side is connected with the furnace outlet flue through the sealing steel plate that is installed in the expansion joint side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220213402 CN202581292U (en) | 2012-05-14 | 2012-05-14 | Labyrinth sealing expansion joint for hearth outlet of circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220213402 CN202581292U (en) | 2012-05-14 | 2012-05-14 | Labyrinth sealing expansion joint for hearth outlet of circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202581292U true CN202581292U (en) | 2012-12-05 |
Family
ID=47250698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220213402 Expired - Lifetime CN202581292U (en) | 2012-05-14 | 2012-05-14 | Labyrinth sealing expansion joint for hearth outlet of circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202581292U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736888A (en) * | 2016-04-29 | 2016-07-06 | 无锡锡能锅炉有限公司 | Pulverized coal boiler separator outlet flue structure |
-
2012
- 2012-05-14 CN CN 201220213402 patent/CN202581292U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736888A (en) * | 2016-04-29 | 2016-07-06 | 无锡锡能锅炉有限公司 | Pulverized coal boiler separator outlet flue structure |
| CN105736888B (en) * | 2016-04-29 | 2018-10-26 | 无锡锡能锅炉有限公司 | Pulverized-coal fired boiler separator outlet flue structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 310004 No. 245 Dong Xin Road, Xiacheng District, Zhejiang, Hangzhou Patentee after: Xizi clean energy equipment manufacturing Co.,Ltd. Address before: 310004 No. 245, Dongxin Road, Xiacheng District, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU BOILER GROUP Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |