CN201203106Y - Anti-wear structure of water-cooled wall joint of fluidized bed boiler furnace - Google Patents
Anti-wear structure of water-cooled wall joint of fluidized bed boiler furnace Download PDFInfo
- Publication number
- CN201203106Y CN201203106Y CNU2007200770666U CN200720077066U CN201203106Y CN 201203106 Y CN201203106 Y CN 201203106Y CN U2007200770666 U CNU2007200770666 U CN U2007200770666U CN 200720077066 U CN200720077066 U CN 200720077066U CN 201203106 Y CN201203106 Y CN 201203106Y
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- bed boiler
- cooling wall
- wear
- boiler furnace
- transition
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Abstract
The utility model relates to a furnace water cooling wall junction wear prevention structure for a circulating fluid bed boiler. Casting wear resistant materials are arranged on a water cooling wall pipe for a dense phase area, wherein, the juncture of the casting wear resistant materials and a plain tube is an inclination transition. The wear prevention structure is characterized in that a lug boss is arranged under the inclination transition at the juncture of the casting wear resistant materials and the plain tube. The wear prevention structure has the advantages that the wear and the corrosion of the upper part of the juncture of the dense phase area and a dilute phase area of the furnace water cooling wall for the circulating fluid bed boiler are reduced and prevented.
Description
Technical field
The utility model relates to a kind of fluid bed boiler furnace water-cooling wall junction 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, after fine grained is gathered into bulky grain group, particle weight increases, and free-falling velocity improves, in case greater than fluidizing velocity, cluster of grains is not blown up, but move 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 3 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 water-cooling wall junction 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 wear-resistant castable and light pipe intersection below are provided with the boss of high-abrasive material cast.
The inclination angle transition of described its upper surface of boss, transition angle are 20 °-60 °, and lower surface is inclination angle or horizontal transition, and transition angle, inclination angle is 0 °-60 °.
The utility model changes the direction of rising flow of flue gas by changing the cast shape of fluid bed boiler furnace water-cooling wall emulsion zone and dilute-phase zone intersection wear-resistant castable, eliminates upper vortex and prevents wearing and tearing.
Characteristic according to fluid bed burner hearth flow of flue gas, the purpose that boss is set forces flue gas flue gas below boss upwards to flow, carry a large amount of particles and flow downward and above boss, form material along water-cooling wall limit wall, utilization is in the boss variation of near zone flow velocity up and down, near boss, form eddy current, thereby avoided the wearing and tearing of the light pipe of boiler hearth of circulating fluidized bed emulsion zone and dilute-phase zone junction.
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 1 one kinds of fluid bed boiler furnace water-cooling walls of embodiment junction abrasion-proof structure schematic diagram;
Fig. 3 is 2 one kinds of fluid bed boiler furnace water-cooling walls of embodiment junction abrasion-proof structure schematic diagram.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 2, be a kind of fluid bed boiler furnace water-cooling wall junction abrasion-proof structure schematic diagram, described a kind of fluid bed boiler furnace water-cooling wall junction 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, below wear-resistant castable 2 and light pipe intersection 3, pour into a mould a boss 4 with the wear-resistant pouring material, its upper surface adopts the inclination angle transition, the transition angle is 40 °, lower surface adopts the inclination angle transition, and the transition angle is 30 °.
The flue gas of boiler rises along the emulsion zone conical surface and flows, force flue gas flow direction to change at boss 4 places, 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, near formation eddy current boss 4, the light pipe on the top of avoiding wearing and tearing.
Described boss 4 lower surfaces adopt horizontal transition, and other is identical with embodiment 1, as shown in Figure 3.
Claims (3)
1. fluid bed boiler furnace water-cooling wall junction 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 (4) with the below of the inclination angle transition of light pipe intersection (3).
2. a kind of fluid bed boiler furnace water-cooling wall according to claim 1 junction abrasion-proof structure is characterized in that, the inclination angle transition of its upper surface of described boss (4), and the transition angle is 20 °-60 °, and lower surface is the inclination angle transition, and the transition angle is 0 °-60 °.
3. a kind of fluid bed boiler furnace water-cooling wall according to claim 2 junction abrasion-proof structure is characterized in that described boss (4) lower surface is a level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200770666U CN201203106Y (en) | 2007-12-24 | 2007-12-24 | Anti-wear structure of water-cooled wall joint of fluidized bed boiler furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200770666U CN201203106Y (en) | 2007-12-24 | 2007-12-24 | Anti-wear structure of water-cooled wall joint of fluidized bed boiler furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201203106Y true CN201203106Y (en) | 2009-03-04 |
Family
ID=40425418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200770666U Expired - Lifetime CN201203106Y (en) | 2007-12-24 | 2007-12-24 | Anti-wear structure of water-cooled wall joint of fluidized bed boiler furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201203106Y (en) |
Cited By (4)
| 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 |
| CN103604118A (en) * | 2013-11-20 | 2014-02-26 | 七台河宝泰隆煤化工股份有限公司 | Abrasion resistant device of boiler water wall tube |
| 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 |
-
2007
- 2007-12-24 CN CNU2007200770666U patent/CN201203106Y/en not_active Expired - Lifetime
Cited By (4)
| 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 |
| CN103604118A (en) * | 2013-11-20 | 2014-02-26 | 七台河宝泰隆煤化工股份有限公司 | Abrasion resistant device of boiler water wall tube |
| 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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090304 |