CN200968600Y - Fluidized-bed boiler furnace transition region anti-wear structure - Google Patents
Fluidized-bed boiler furnace transition region anti-wear structure Download PDFInfo
- Publication number
- CN200968600Y CN200968600Y CN 200620047625 CN200620047625U CN200968600Y CN 200968600 Y CN200968600 Y CN 200968600Y CN 200620047625 CN200620047625 CN 200620047625 CN 200620047625 U CN200620047625 U CN 200620047625U CN 200968600 Y CN200968600 Y CN 200968600Y
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- China
- Prior art keywords
- wear
- bed boiler
- transition region
- boiler furnace
- inclination angle
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Abstract
The utility model relates to an anti-wearing structure of transition zone of firebox on the fluidized bed boiler. Dense-phase zone of the water wall tube is poured with wear-resisting material. The interface of the wear-resisting material and the smooth tube has a tilt angle, which is characterized in that a boss is arranged in the transition zone of the tilt angle. The upper face of the boss is consistent with the original and the lower face is horizontal. The utility model has the advantage of that the structure can lighten and prevent the wear and corrosion in the upper part of interface between the dilute-phase zone and the dense-phase zone of the water wall tube in the firebox on the fluidized bed boiler.
Description
Technical field
The utility model relates to a kind of fluid bed boiler furnace transition region abrasion-proof structure, relate in particular to a kind of CFBB emulsion zone and dilute-phase zone intersection and prevent a kind of structure of wearing and tearing, be used for boiler hearth of circulating fluidized bed water-cooling wall abrasionproof, belong to CFBB fluidization technique field.
Background technology
Principle according to the CFBB Dual-Phrase Distribution of Gas olid, the dilute-phase zone of upper furnace is the fast bed that fine grained is formed, under certain condition, the particle of dilute-phase zone is reunited, and after fine grained was gathered into bulky grain group, particle weight increased, free-falling velocity improves, in case greater than fluidizing velocity, cluster of grains is not blown up, but moves downward against air-flow.In the decline process, the air-flow that is risen is dispersed as fine grained, driven by air-flow again and move upward, be gathered into cluster of grains again, settle down again, in the recirculating fluidized bed burner hearth, owing to there is the effect of limit wall, gas-solid is flowed to form near furnace wall cooling limit wall place high concentration particle group and is moved downward, and the burner hearth center then is that rarer gas-solid moves upward relatively, produces circulation in the strong stove.
The abrasionproof of fluid bed boiler furnace water-cooling wall emulsion zone and dilute-phase zone intersection mostly adopts " tickout " to kick out of structure at present, as shown in Figure 1, emulsion zone water-cooling wall pipe 1 adopts welding pin and cast high-abrasive material 2 to come abrasionproof, wherein wear-resistant castable and light pipe intersection adopt the inclination angle transition, though this structure can prevent the wearing and tearing of transition region well in actual moving process, but find through long-term operation, transition region is because opposite along the smoke movement direction of upwards moving in the material that flows downward of wall and the stove, therefore produce eddy current in the zone 3 of the about 1.0-2.0m in interface top, thereby cause this zone tube wear serious, this phenomenon ubiquity in CFBB.
Summary of the invention
The purpose of this utility model provides a kind of fluid bed boiler furnace transition region abrasion-proof structure of eliminating the wearing and tearing of transition region top.
For realizing above purpose, the technical solution of the utility model provides a kind of fluid bed boiler furnace transition region abrasion-proof structure, emulsion zone water-cooling wall pipe is provided with the cast high-abrasive material, wherein wear-resistant castable and light pipe intersection are the inclination angle transition, it is characterized in that, the inclination angle transition position of wear-resistant castable and light pipe intersection is provided with a boss, and the inclination angle of its upper surface keeps with original consistent, and lower surface is a level.
The utility model utilizes boss of wear-resistant pouring material cast at water-cooling wall emulsion zone and dilute-phase zone boundary, utilizes boss to guide burner hearth rising flue gas flow direction.
The utility model has the advantages that the wearing and tearing and the erosion that alleviate and prevent fluid bed boiler furnace water-cooling wall emulsion zone and dilute-phase zone intersection top.
Description of drawings
Fig. 1 is former fluid bed boiler furnace transition region abrasion-proof structure schematic diagram;
Fig. 2 is the utility model fluid bed boiler furnace transition region abrasion-proof structure schematic diagram.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
As shown in Figure 2, be the utility model fluid bed boiler furnace transition region abrasion-proof structure schematic diagram, described fluid bed boiler furnace transition region abrasion-proof structure, on emulsion zone water-cooling wall pipe 1, adopt the welding pin that cast high-abrasive material 2 is installed, wherein wear-resistant castable 2 adopts the inclination angle transition with light pipe intersection 3, pour into a mould a boss 5 at the wear-resistant castable 2 and the inclination angle transition position of light pipe intersection 3 with the wear-resistant pouring material, the inclination angle of its upper surface keeps with original consistent, and lower surface is a level.
The flue gas of boiler rises along the emulsion zone conical surface and flows, force flue gas flow direction to change at the boss place, make it, after the grain flow that burner hearth central motion flue gas stream and limit wall descend meets to the burner hearth central motion, particle is thrown to the burner hearth center, thereby avoid producing eddy current wearing and tearing pipe.
Claims (1)
1. fluid bed boiler furnace transition region abrasion-proof structure, emulsion zone water-cooling wall pipe (1) is provided with cast high-abrasive material (2), wherein wear-resistant castable (2) is the inclination angle transition with light pipe intersection (3), it is characterized in that, wear-resistant castable (2) is provided with a boss (5) with the inclination angle transition position of light pipe intersection (3), the inclination angle of its upper surface keeps with original consistent, and lower surface is a level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620047625 CN200968600Y (en) | 2006-11-09 | 2006-11-09 | Fluidized-bed boiler furnace transition region anti-wear structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620047625 CN200968600Y (en) | 2006-11-09 | 2006-11-09 | Fluidized-bed boiler furnace transition region anti-wear structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200968600Y true CN200968600Y (en) | 2007-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620047625 Expired - Lifetime CN200968600Y (en) | 2006-11-09 | 2006-11-09 | Fluidized-bed boiler furnace transition region anti-wear structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200968600Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900328A (en) * | 2010-08-17 | 2010-12-01 | 济南市锅炉压力容器检验研究所 | Guiding device for water cooled wall |
| CN101701706B (en) * | 2009-11-20 | 2012-11-14 | 无锡华光锅炉股份有限公司 | Improved anti-abrasion structure at wall-through place of water-cooling wall and screen-type heating surface |
| CN102966959A (en) * | 2012-11-29 | 2013-03-13 | 华南理工大学 | Wall-attached air system for preventing high temperature corrosion of water cooled wall of garbage incinerator |
| CN105782960A (en) * | 2016-05-10 | 2016-07-20 | 北京亚高科能源科技有限公司 | Circulating bed heat-conducting oil boiler with dense phase zone with anti-abrasion structures |
| CN111043589A (en) * | 2019-12-31 | 2020-04-21 | 哈尔滨科能熔敷科技有限公司 | Flow guide beam and method for reducing abrasion of wall-attached wind of water-cooled wall of boiler |
-
2006
- 2006-11-09 CN CN 200620047625 patent/CN200968600Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101701706B (en) * | 2009-11-20 | 2012-11-14 | 无锡华光锅炉股份有限公司 | Improved anti-abrasion structure at wall-through place of water-cooling wall and screen-type heating surface |
| CN101900328A (en) * | 2010-08-17 | 2010-12-01 | 济南市锅炉压力容器检验研究所 | Guiding device for water cooled wall |
| CN102966959A (en) * | 2012-11-29 | 2013-03-13 | 华南理工大学 | Wall-attached air system for preventing high temperature corrosion of water cooled wall of garbage incinerator |
| CN102966959B (en) * | 2012-11-29 | 2015-01-28 | 华南理工大学 | Wall-attached air system for preventing high temperature corrosion of water cooled wall of garbage incinerator |
| CN105782960A (en) * | 2016-05-10 | 2016-07-20 | 北京亚高科能源科技有限公司 | Circulating bed heat-conducting oil boiler with dense phase zone with anti-abrasion structures |
| CN111043589A (en) * | 2019-12-31 | 2020-04-21 | 哈尔滨科能熔敷科技有限公司 | Flow guide beam and method for reducing abrasion of wall-attached wind of water-cooled wall of boiler |
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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: 20071031 |
|
| EXPY | Termination of patent right or utility model |