CN202442327U - Boiler top sealing device for circulating fluidized bed (CFB) boiler - Google Patents
Boiler top sealing device for circulating fluidized bed (CFB) boiler Download PDFInfo
- Publication number
- CN202442327U CN202442327U CN 201120554658 CN201120554658U CN202442327U CN 202442327 U CN202442327 U CN 202442327U CN 201120554658 CN201120554658 CN 201120554658 CN 201120554658 U CN201120554658 U CN 201120554658U CN 202442327 U CN202442327 U CN 202442327U
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- seal box
- boiler
- cfb
- expansion joint
- tube panel
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Abstract
Provided is a boiler top sealing device for a circulating fluidized bed (CFB) boiler. To meet the requirements of sealing and expanding of the boiler, a large non-metal expansion joint is generally adopted at the position of a tube panel penetrating a ceiling, the sealing effect is poor according to previous operating experience due to errors in manufacture and installation and quality of supplied material of the expansion joint, expanding and blocking of the tube panel are caused easily, so that the tube panel is deformed, and the running safety is influenced. The boiler top sealing device for the CFB boiler comprise a seal box (5), wherein aluminum silicate ceramic fiber felt is arranged inside the seal box (5), and a constructing abrasion-resistant and fireproof pouring material is arranged outside the seal box (5). The seal box is located at the upper end of a hearth water cooled wall (1), the tube panel (3) and a collecting box (6) are installed in the seal box, the collecting box is fixed through a lifting rod (7), and the collecting box and the lifting rod are connected with the seal box through the expansion joint (8). The boiler top sealing device is used for the CFB boiler.
Description
Technical field:
the utility model relates to a kind of novel roof Sealing in Boiler Furnace device, is specifically related to a kind of CFB of being used for roof Sealing in Boiler Furnace device.
Background technology:
recirculating fluidized bed (CFB) boiler has because of its unique flow dynamic characteristic and structure make it that fuel tolerance is wide, efficiency of combustion is high, high-efficiency desulfurization, nitrogen oxide (NOx) discharging are low, preparation of fuel, coal supply system are simple, be easy to realize ash comprehensive utilization, the lotus adjustable range is big; Advantages such as peaking performance is good; Particularly along with the minimizing of national coal resources and the adjustment of national environmental protection policy, CFBB obtained fast development in recent years.Though the greatest problem that the CFB boiler exists is a wear problem, for satisfying the development that the CFB boiler maximizes, CFB boiler stove domestic demand is provided with superheater and reheater tube panel.Simultaneously, for satisfying the demand of boiler seal and expansion, wear the ceiling place at tube panel and adopt a big non-metal expansion joint usually; But according to operating experience in the past; Because the supply of material quality of manufacturing, installation errors and expansion joint makes sealing effectiveness bad, and is prone to cause the tube panel swelling blockage; Make the tube panel distortion, influence security of operation.
Summary of the invention:
The purpose of
the utility model provide a kind of can solve that expansion issues can guarantee sealing effectiveness again be used for CFB roof Sealing in Boiler Furnace device.
Above-mentioned purpose realizes through following technical scheme:
a kind of CFB roof Sealing in Boiler Furnace device that is used for; Its composition comprises: inside has alumina-silicate ceramic fibre felt and outside seal box with construction abrasion-proof and refractory pouring material; Described seal box is positioned at the furnace wall cooling upper end; Tube panel and described collection case are contained in the described seal box, and described collection case is fixed through suspension rod, and described collection case is connected described seal box with described suspension rod through expansion joint.
described CFB roof Sealing in Boiler Furnace device that is used for: described suspension rod passes described seal box upper end, and described collection case passes described left end or the right-hand member that has the seal box of sealing plate.
described CFB roof Sealing in Boiler Furnace device that is used for; Wear the seal box place that has sealing plate at the collection case non-metal expansion joint is set; Described non-metal expansion joint lower end is welded to connect with the described seal box that has sealing plate, and upper end and described suspension rod clamp.
Beneficial effect:
1. the new type sealing device that adopts of the utility model can solve expansion issues and can guarantee sealing effectiveness again.
the utility model has solved the interior superheater of CFB boiler stove and the reheater tube panel is worn expansion and the sealing problem that ceiling brings; Avoid the tube panel swelling blockage; Alleviate the consequent distortion of tube panel in the stove, bending even booster, guaranteed power plant's security of operation.
hermetically-sealed construction of the utility model can satisfy the requirement of boiler expansion and sealing, effectively avoids adopting in the preliminary engineering problems such as the difficult installation that a big non-metal expansion joint brought, unfavorable maintenance again.
Description of drawings:
accompanying drawing 1 is the structural representation of this product.
accompanying drawing 2 is that the K-K of accompanying drawing 1 is to view.
accompanying drawing 3 is that the H-H of accompanying drawing 1 is to view.
The specific embodiment: embodiment 1:
a kind of CFB roof Sealing in Boiler Furnace device that is used for; Its composition comprises: inside has alumina-silicate ceramic fibre felt and outside seal box 5 with construction abrasion-proof and refractory pouring material; Described seal box and roof tube fin are welded to connect and are positioned at furnace wall cooling 1 upper end; Tube panel 3 is housed in the described seal box, and described tube panel upper end connects collection case 6, and described collection case is fixing through suspension rod 7; Described tube panel and described collection case are contained in the described seal box, and described collection case is connected described seal box with described suspension rod through expansion joint 8.
Embodiment 2:
embodiment 1 described CFB roof Sealing in Boiler Furnace device that is used for, described suspension rod pass described seal box upper end, and described collection case passes described left end or the right-hand member that has the seal box of sealing plate.
Embodiment 3:
embodiment 1 or the 2 described CFB roof Sealing in Boiler Furnace devices that are used for; Wear the seal box place that has sealing plate at the collection case non-metal expansion joint is set; Described non-metal expansion joint lower end is welded to connect with the seal box that has sealing plate, and upper end and suspension rod clamp.
Embodiment 4:
The described CFB roof Sealing in Boiler Furnace device that is used for of
the foregoing description is worn big seal box that has sealing plate of ceiling place design at tube panel, and the seal box and the roof tube fin that have sealing plate are welded to connect.Wear the seal box place that has sealing plate at suspension rod non-metal expansion joint is set.The non-metal expansion joint lower end is welded to connect with the seal box that has sealing plate, and upper end and suspension rod clamp.Wear the seal box place that has sealing plate at the collection case non-metal expansion joint is set.Non-metal expansion joint and collection case and the seal box that has a sealing plate all are welded to connect.
Embodiment 5:
The described CFB roof Sealing in Boiler Furnace device that is used for of
the foregoing description; Wear big seal box of ceiling place design at tube panel; Tube panel and collection case all are placed in the seal box, wear at tube panel that the ceiling place is provided with sealing plate, construction abrasion-proof and refractory pouring material, alumina-silicate ceramic fibre felt etc. are used for sealing.
Upwards expand because of tube panel
, and hanging on top of tube panel need be provided with expansion joint so wear the seal box place at suspension rod.According to the difference of operating condition, select rational calculating wall temperature for use, according to the linear expansion coefficient of different materials, calculate possible maximum swelling value, with this foundation as expansion joint design and selection.Less because of the suspension rod diameter, the appearance and size demand of non-metal expansion joint is also less here, and it is also convenient to install.
When
tube panel upwards expanded, the collection case of upper end also expanded thereupon.For satisfying the expansion and the sealing of collection case, wear the seal box place at the collection case non-metal expansion joint also is set.The energy-conservation requirement of satisfying expansion and sealing fully of the expansion at collection case and suspension rod two places.
Claims (3)
1. one kind is used for CFB roof Sealing in Boiler Furnace device; Its composition comprises: inside has alumina-silicate ceramic fibre felt and outside seal box with construction abrasion-proof and refractory pouring material; Described seal box is positioned at the furnace wall cooling upper end; Tube panel and described collection case are contained in the described seal box, and described collection case is fixed through suspension rod, and described collection case is connected described seal box with described suspension rod through expansion joint.
2. the CFB roof Sealing in Boiler Furnace device that is used for according to claim 1 is characterized in that: described suspension rod passes described seal box upper end, and described collection case passes described left end or the right-hand member that has the seal box of sealing plate.
3. the CFB roof Sealing in Boiler Furnace device that is used for according to claim 1 and 2; It is characterized in that: wear the seal box place that has sealing plate at the collection case non-metal expansion joint is set; Described non-metal expansion joint lower end is welded to connect with the described seal box that has sealing plate, and upper end and described suspension rod clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120554658 CN202442327U (en) | 2011-12-27 | 2011-12-27 | Boiler top sealing device for circulating fluidized bed (CFB) boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120554658 CN202442327U (en) | 2011-12-27 | 2011-12-27 | Boiler top sealing device for circulating fluidized bed (CFB) boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202442327U true CN202442327U (en) | 2012-09-19 |
Family
ID=46823776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120554658 Expired - Lifetime CN202442327U (en) | 2011-12-27 | 2011-12-27 | Boiler top sealing device for circulating fluidized bed (CFB) boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202442327U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276559A (en) * | 2015-11-26 | 2016-01-27 | 华西能源工业股份有限公司 | Fixing device for vertical superheater of biomass circulating fluidized bed boiler |
| CN105387442A (en) * | 2015-12-23 | 2016-03-09 | 哈尔滨锅炉厂有限责任公司 | Expansion joint sealing device of boiler ceiling |
-
2011
- 2011-12-27 CN CN 201120554658 patent/CN202442327U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276559A (en) * | 2015-11-26 | 2016-01-27 | 华西能源工业股份有限公司 | Fixing device for vertical superheater of biomass circulating fluidized bed boiler |
| CN105276559B (en) * | 2015-11-26 | 2018-01-02 | 华西能源工业股份有限公司 | The vertical superheater fixing device of biomass recirculating fluidized bed boiler |
| CN105387442A (en) * | 2015-12-23 | 2016-03-09 | 哈尔滨锅炉厂有限责任公司 | Expansion joint sealing device of boiler ceiling |
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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: 20120919 |
|
| CX01 | Expiry of patent term |