CN202835338U - Fixing device for tail flue temperature regulating baffle of CFB (circulating fluid bed) boiler - Google Patents
Fixing device for tail flue temperature regulating baffle of CFB (circulating fluid bed) boiler Download PDFInfo
- Publication number
- CN202835338U CN202835338U CN 201220323366 CN201220323366U CN202835338U CN 202835338 U CN202835338 U CN 202835338U CN 201220323366 CN201220323366 CN 201220323366 CN 201220323366 U CN201220323366 U CN 201220323366U CN 202835338 U CN202835338 U CN 202835338U
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- temperature
- truss
- adjusting baffle
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- flue
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Abstract
In traditional design structure, a temperature regulating baffle is formed by a blending plate directly connected with an upper flue and a lower flue, and the lower flue is hung through the temperature regulating baffle. A fixing device for a tail flue temperature regulating baffle of a CFB (circulating fluid bed) boiler comprises a outlet flue (1) of a economizer and a small ash bucket (2) of the economizer, wherein the outlet flue of the economizer is provided with a steel truss module (6) inside, the steel truss module is provided inside with a low temperature reheater temperature regulating baffle with a frame (3) and a low temperature overheater temperature regulating baffle (5) with a frame, and the bottom of the truss is connected with the small ash bucket of the economizer. The fixing device for the tail flue temperature regulating baffle of the CFB (circulating fluid bed) boiler is used for fixing the tail flue temperature regulating baffle of a boiler.
Description
Technical field:
The utility model relates to a kind of CFB boiler back end ductwork temperature-adjusting baffle fixture for boiler back end ductwork.
Background technology:
330MW subcritical circulating fluidized bed boiler back-end ductwork adopts the twin flue temperature-adjusting baffle to regulate the reheater steam temperature first, and temperature-adjusting baffle is positioned in the economizer exit flue, and the economizer exit flue is divided into upper and lower two parts flue.In traditional project organization, temperature-adjusting baffle directly is connected with the upper and lower part flue by bent plate, relies on temperature-adjusting baffle to hang underflue.Because boiler economizer exhaust pass dust load has uncertainty, the uncertainty of welding quality in on-the-spot the installation, rely on the temperature-adjusting baffle power transmission to hang the economizer underflue and there is very large hidden danger in ash bucket, the stressed meeting of temperature-adjusting baffle is distorted and ineffective.
The utility model content:
The purpose of this utility model provides a kind of easy for installation, and temperature-adjusting baffle does not stress, the CFB boiler back end ductwork temperature-adjusting baffle fixture of the distortion that can not be distorted.
Above-mentioned purpose realizes by following technical scheme:
A kind of CFB boiler back end ductwork temperature-adjusting baffle fixture, its composition comprises: the little ash bucket of economizer exit flue, be installed in the rigidity component truss in the economizer exit flue, the low-temperature reheater temperature-adjusting baffle of tape frame and the low temperature superheater temperature-adjusting baffle of tape frame are housed in the described rigidity component truss, and described truss bottom connects the little ash bucket of described economizer exit flue.
Described CFB boiler back end ductwork temperature-adjusting baffle fixture, described rigidity component truss comprises low-temperature reheater temperature-adjusting baffle truss and low temperature superheater temperature-adjusting baffle truss, described low-temperature reheater temperature-adjusting baffle truss comprises three groups of horizontal truss, No. two horizontal truss and No. three vertical truss, described low temperature superheater temperature-adjusting baffle truss comprises three groups of horizontal truss, No. four vertical truss, No. two horizontal truss and No. six vertical truss, described transverse truss is connected with described vertical truss right-angled intersection, described rigidity component truss is installed in described economizer exit flue inwall, and described low-temperature reheater temperature-adjusting baffle and described low temperature superheater temperature-adjusting baffle are fixed in the described rigidity component truss.
Described CFB boiler back end ductwork temperature-adjusting baffle fixture, the described low-temperature reheater temperature-adjusting baffle degree of depth is 3682mm, the described low temperature superheater temperature-adjusting baffle degree of depth is 5712mm, and the described transverse truss degree of depth is 10550mm, and described vertical truss length is 15244mm.
Described CFB boiler back end ductwork temperature-adjusting baffle fixture, described framework is made of the 25# I-steel, and it is inner that described framework is arranged at described economizer exit flue.
Beneficial effect:
1. temperature-adjusting baffle of the present utility model is fixed on the truss, is carried by truss, and this structure manufacturing is simple, easy for installation, and temperature-adjusting baffle does not stress, and distortion can not be distorted.
2. the utility model is made of one the truss of upper and lower two parts flue, temperature-adjusting baffle directly is fixed between the truss, bear whole load by economizer exit flue internal truss frame, temperature-adjusting baffle does not stress, distortion can not be distorted, more can not make the baffle plate distortion stuck, and can't regulate the reheater steam temperature.
3. the utility model has been eliminated a larger boiler operatiopn hidden danger with a simple structure, has guaranteed the safe operation of boiler.
4. the utility model use in the temperature-adjusting baffle of 300MW level flows fluidized bed boiler fixing is the fixed form of domestic initiation fluidized-bed combustion boiler back-end ductwork temperature-adjusting baffle.
5. the utility model adopts the flue internal truss frame to support whole load of temperature-adjusting baffle, avoids the foreign patent technology, exploitation proprietary technology, the cost of reduction boiler.
6. damper adjustment mode of the present utility model is used for back-end ductwork, substitutes external bed, has simplified the structure of 300MW level flows fluidized bed boiler.
Description of drawings:
Accompanying drawing 1 is the structural representation of this product.
Accompanying drawing 2 is that the I of accompanying drawing 1 is to structural representation.
Accompanying drawing 3 is that the B-B of accompanying drawing 2 is to structural representation.
Accompanying drawing 4 is frame diagrams of accompanying drawing 1.
The specific embodiment:
Embodiment 1:
A kind of CFB boiler back end ductwork temperature-adjusting baffle fixture, its composition comprises: economizer exit flue 1, the little ash bucket 2 of economizer exit flue, in the described economizer exit flue rigidity component truss 6 is housed, the low-temperature reheater temperature-adjusting baffle 4 of tape frame 3 and the low temperature superheater temperature-adjusting baffle 5 of tape frame are housed in the described rigidity component truss, and described truss bottom connects the little ash bucket of described economizer exit flue.
Described CFB boiler back end ductwork temperature-adjusting baffle fixture, the described low-temperature reheater temperature-adjusting baffle degree of depth is 3682mm, the described low temperature superheater temperature-adjusting baffle degree of depth is 5712mm, and the described transverse truss degree of depth is 10550mm, and described vertical truss length is 15244mm.
Described CFB boiler back end ductwork temperature-adjusting baffle fixture, described framework is made of the 25# I-steel.
Embodiment 2:
Embodiment 3:
A kind of method for regulating temperature of CFB boiler back end ductwork temperature-adjusting baffle, in 330MW subcritical circulating fluidized bed boiler back-end ductwork, adopt the twin flue temperature-adjusting baffle to regulate the reheater steam temperature, low-temperature reheater temperature-adjusting baffle and low temperature superheater temperature-adjusting baffle are positioned in the economizer exit flue, the economizer exit flue is divided into upper and lower two parts flue.
The method for regulating temperature of described CFB boiler back end ductwork temperature-adjusting baffle, the whole temperature-adjusting baffle that low-temperature reheater temperature-adjusting baffle and low temperature superheater temperature-adjusting baffle are made of one, be positioned on the internal truss frame of economizer exit flue, whole temperature-adjusting baffle is installed in the afterbody economizer exit flue, along the stove cross direction the same transverse truss of three rows is set at the economizer exit flue, consist of framework by the 25# I-steel around the whole temperature-adjusting baffle, with the frame welding of temperature-adjusting baffle on the 25# I-steel, whole temperature-adjusting baffle is supported jointly by three row's transverse truss, this three rows transverse truss by absolute altitude at row's truss frame for connecting of 29508 and unified general frame of vertical truss constitute of arranging along the stove cross direction, directly hang in economizer annular header bottom, finish the fixing of whole temperature-adjusting baffle; According to ruuning situation, by the aperture of DCS Signal Regulation baffle plate, finish the purpose of regulating the reheater steam temperature.
Embodiment 4:
The described CFB boiler back end ductwork of above-described embodiment temperature-adjusting baffle fixture, back-end ductwork adopts the twin flue temperature-adjusting baffle to regulate the reheater steam temperature first in the 330MW subcritical circulating fluidized bed boiler, temperature-adjusting baffle is positioned in the economizer exit flue, and the economizer exit flue is divided into upper and lower two parts flue.Afterbody economizer exit flue is of a size of 15244x10544, by calculating, low-temperature reheater side temperature-adjusting baffle opening size is 3682x15244, low temperature superheater side temperature-adjusting baffle opening size is 5712x15244, whole temperature-adjusting baffle need to be installed in the afterbody economizer exit flue, to hang down again with low two side shields and be made of one, be positioned on the internal truss frame of economizer exit flue, so as shown in drawings, along the stove cross direction the same transverse truss of three rows is set at the economizer exit flue, consist of framework by the 25# I-steel around the baffle plate, the housing of temperature-adjusting baffle is welded on the 25# I-steel, like this, baffle plate is supported jointly by three row's transverse truss, this three rows transverse truss by absolute altitude at a row of horizontal truss of 29508 and unified framework of vertical truss constitute of arranging along the stove cross direction, all wt, by the truss power transmission, directly hang in economizer annular header bottom, finish the fixing of temperature-adjusting baffle.
Claims (4)
1. CFB boiler back end ductwork temperature-adjusting baffle fixture, its composition comprises: the little ash bucket of economizer exit flue, it is characterized in that: be installed in the rigidity component truss in the economizer exit flue, the low-temperature reheater temperature-adjusting baffle of tape frame and the low temperature superheater temperature-adjusting baffle of tape frame are housed in the described rigidity component truss, and described truss bottom connects the little ash bucket of described economizer exit flue.
2. CFB boiler back end ductwork temperature-adjusting baffle fixture according to claim 1, it is characterized in that: described rigidity component truss comprises low-temperature reheater temperature-adjusting baffle truss and low temperature superheater temperature-adjusting baffle truss, described low-temperature reheater temperature-adjusting baffle truss comprises three groups of horizontal truss, No. two horizontal truss and No. three vertical truss, described low temperature superheater temperature-adjusting baffle truss comprises three groups of horizontal truss, No. four vertical truss, No. two horizontal truss and No. six vertical truss, described transverse truss is connected with described vertical truss right-angled intersection, described rigidity component truss is installed in described economizer exit flue inwall, and described low-temperature reheater temperature-adjusting baffle and described low temperature superheater temperature-adjusting baffle are fixed in the described rigidity component truss.
3. CFB boiler back end ductwork temperature-adjusting baffle fixture according to claim 1 and 2, it is characterized in that: the described low-temperature reheater temperature-adjusting baffle degree of depth is 3682mm, the described low temperature superheater temperature-adjusting baffle degree of depth is 5712mm, the described transverse truss degree of depth is 10550mm, and described vertical truss length is 15244mm.
4. CFB boiler back end ductwork temperature-adjusting baffle fixture according to claim 1 and 2, it is characterized in that: described framework is made of the 25# I-steel, and it is inner that described framework is arranged at described economizer exit flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220323366 CN202835338U (en) | 2012-07-05 | 2012-07-05 | Fixing device for tail flue temperature regulating baffle of CFB (circulating fluid bed) boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220323366 CN202835338U (en) | 2012-07-05 | 2012-07-05 | Fixing device for tail flue temperature regulating baffle of CFB (circulating fluid bed) boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202835338U true CN202835338U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220323366 Expired - Lifetime CN202835338U (en) | 2012-07-05 | 2012-07-05 | Fixing device for tail flue temperature regulating baffle of CFB (circulating fluid bed) boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202835338U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777896A (en) * | 2012-07-05 | 2012-11-14 | 哈尔滨锅炉厂有限责任公司 | Device for fixing temperature-adjusting baffle of tail portion flue of circulating fluid bed (CFB) boiler and temperature-adjusting method |
| CN106227983A (en) * | 2016-08-31 | 2016-12-14 | 哈尔滨锅炉厂有限责任公司 | Girder device and Verification method for cigarette air channel carrying subordinate economizer |
| CN107575855A (en) * | 2017-10-10 | 2018-01-12 | 苏州海陆重工股份有限公司 | Flue gas governor motion in back-end ductwork |
| CN110822407A (en) * | 2019-11-26 | 2020-02-21 | 哈尔滨锅炉厂有限责任公司 | Novel economizer flue structure and installation and arrangement method |
-
2012
- 2012-07-05 CN CN 201220323366 patent/CN202835338U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777896A (en) * | 2012-07-05 | 2012-11-14 | 哈尔滨锅炉厂有限责任公司 | Device for fixing temperature-adjusting baffle of tail portion flue of circulating fluid bed (CFB) boiler and temperature-adjusting method |
| CN102777896B (en) * | 2012-07-05 | 2017-01-04 | 哈尔滨锅炉厂有限责任公司 | Fixing device and temperature adjusting method for CFB boiler tail flue temperature adjusting baffle |
| CN106227983A (en) * | 2016-08-31 | 2016-12-14 | 哈尔滨锅炉厂有限责任公司 | Girder device and Verification method for cigarette air channel carrying subordinate economizer |
| CN107575855A (en) * | 2017-10-10 | 2018-01-12 | 苏州海陆重工股份有限公司 | Flue gas governor motion in back-end ductwork |
| CN110822407A (en) * | 2019-11-26 | 2020-02-21 | 哈尔滨锅炉厂有限责任公司 | Novel economizer flue structure and installation and arrangement method |
| CN110822407B (en) * | 2019-11-26 | 2021-08-20 | 哈尔滨锅炉厂有限责任公司 | Novel economizer flue structure and installation and arrangement method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |
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| CX01 | Expiry of patent term |