CN201487944U - Anti-abrasion device for circulating fluid bed boiler water wall - Google Patents
Anti-abrasion device for circulating fluid bed boiler water wall Download PDFInfo
- Publication number
- CN201487944U CN201487944U CN2009202164602U CN200920216460U CN201487944U CN 201487944 U CN201487944 U CN 201487944U CN 2009202164602 U CN2009202164602 U CN 2009202164602U CN 200920216460 U CN200920216460 U CN 200920216460U CN 201487944 U CN201487944 U CN 201487944U
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- water wall
- wear
- water
- bed boiler
- horizontal protective
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model relates to an anti-abrasion device, particularly to an anti-abrasion device for circulating fluid bed boiler water wall capable of improving use effects, slowing abrasion and ensuring safe and economic operation of boiler, which comprises rake nails, horizontal protective cross beams, a wear-resistant alloy coating, and an enclosed material layer, wherein the rake nails are welded to fins between water wall tubes, the horizontal protective cross beams are arranged on the rake nails, and the wear-resistant alloy coating and the enclosed material layer are arranged sequentially on the outer surfaces of the walls of the water wall tube. As the water wall tubes are under shielded and protective state, and the circulating fluid bed boiler water wall tubes are effectively protected; as the horizontal protective cross beams with heat conduction effect are arranged on the heating surface of the water wall, the flow rate of dusty air flow in the boiler can be effectively reduced, the flowing direction of the air flow can be changed, and the abrasion of the air flow upon the water wall tubes can be reduced to a great degree; the utility model has the advantages of convenient manufacturing, low cost, no additional method and cost, and long effective term; the utility model is convenient to use, influence not the overhauling operation and normal use of user, and requires no maintenance.
Description
Technical field
The utility model relates to a kind of shoe, relates in particular to a kind of circulating fluidized bed boiler water-cooling wall to be improved result of use, slows down wearing and tearing, guarantees the shoe of boiler safety, economical operation.
Background technology
In service at CFBB, high moisture content, the great burning environment of inferior quality coal of dust burdening is produced contains fuel, ash, the solid material (particle diameter is below 0.6-0.3mm) that a large amount of high temperature of lime stone and product thereof are tiny, be in " burner hearth one separator one material returning valve one burner hearth " this closed circulation loop during the high speed of not stopping circulates, having formed material organizes mutually with plasticity, under the gravity effect, the adherent ash of being close between vertical water-wall tube row surface and pipe of top-down big flow flows, washing away between vertical water-wall tube row and pipe with high speed, and the adherent ash stream of this strand be derived from the recirculating fluidized bed air compartment from down and on air-flow meet, any protrusion on water wall surface (even high spot of not enough 1mm) forms countless eddy current, this eddy current water-cooling wall base material that ceaselessly wearing and tearing causes the boiler water wall serious wear.At present; for protecting the boiler water wall safe operation, slowing down wearing and tearing; the shoe of circulating fluidized bed boiler water-cooling wall heating surface to be adopted on its surface and to be wear-resisting watt of high alumina of protection, antiwear heat resisting casting arc watt; or it is moldable or water material feeding that fire-resistant abrasion-proof is set; or make the build-up wear-resistant alloy-layer, or spraying alloy wear-resisting coating, or add single shoe measure such as chafing strip; the abrasionproof effect is all not ideal enough, even some scheme causes to a certain degree negative effect to water-cooling wall tube wall part.
Summary of the invention
The purpose of this utility model is: overcome the abrasionproof measure defective and the deficiency of existing circulating fluidized bed boiler water-cooling wall heating surface, a kind of circulating fluidized bed boiler water-cooling wall shoe is provided.
The purpose of this utility model realizes by following scheme: it comprises harrow nail, horizontal protective crossbeam, coated with wear-resisting alloy, closed material layer, harrow nail is welded between water screen tube on the fin, the horizontal protective crossbeam is set on harrow nail, is provided with coated with wear-resisting alloy and closed material layer successively at the water screen tube outer surface of tube wall of water screen tube.
Harrow nail be shaped as " V " font or " Y " font.
Water screen tube and horizontal protective crossbeam are with mutual cross arrangement direction setting.
Harrow nail is fixed between water screen tube on the fin, and line space and column pitch are all adjustable.
The horizontal protective crossbeam adopts the fire-resistant ramming material of wear-resisting anti-thermal shock to add Heat Conduction Material and makes, and is ledge structure, thickness and width-adjustable.
Coated with wear-resisting alloy is formed at the outer water wall surface surface of horizontal protective crossbeam, and thickness is adjustable.
The closed material layer adopts superhard new material to make, and sealing of hole is carried out on the coated with wear-resisting alloy surface, and high temperature forms hard ceramic body down, makes whole coating finer and close, and its thickness and the making frequency are adjustable.
The horizontal protective crossbeam flows soft stopping to the adherent ash of being close between vertical water-wall tube row surface and pipe of big flow in the stove, adherent like this ash stream still flows down along the recessed beam of fin between vertical water-wall tube row surface and pipe the ash stream that the abrasionproof beam overflows, but can not be close to the surface, reduce of the wearing and tearing of adherent ash stream greatly to vertical water wall, the segmentation of multiple tracks abrasionproof beam intercepts, and effect also shows especially thereupon; In horizontal protective crossbeam making material, add Heat Conduction Material, avoid the obstacle that conducts heat; Coated with wear-resisting alloy, closed material layer are further protected the water-cooling wall outside the horizontal protective crossbeam, and its screen is closed protection.
The utility model compared with prior art has following advantage:
1, makes water screen tube be in screen and close guard mode, protected the circulating fluidized bed boiler water-cooling wall pipe effectively;
2, the horizontal protective crossbeam with heat-conducting effect of described water wall surface reduces the flow velocity of dust-contained airflow in the boiler effectively, and changes the flow direction of air-flow, reduces the wearing and tearing of air-flow to water screen tube largely;
3, the utility model is easy to make, and cost is low, need not any additional means and fringe cost;
4, the utility model, the obtained effect phase is long;
5, the utility model, easy to use, do not influence user maintenance operation, normal use, Maintenance free.
Description of drawings:
Fig. 1 is the utility model part-structure schematic diagram;
Fig. 2 is the amplifier section structural representation at II place among Fig. 1;
Fig. 3 is the sectional view of water screen tube in the utility model;
Fig. 4 is an integral layout structural representation of the present utility model;
Fig. 5 is the sectional view of integral layout of the present utility model;
Fig. 6 is the amplifier section structural representation at I place among Fig. 5.
The specific embodiment
The present invention is described in detail below in conjunction with accompanying drawing: it comprises harrow nail 3, horizontal protective crossbeam 2, coated with wear-resisting alloy 5, closed material layer 6, harrow nail 3 is welded on 1 fin 7 of water screen tube, horizontal protective crossbeam 2 is set on harrow nail 3, is provided with coated with wear-resisting alloy 5 and closed material layer 6 successively at water screen tube tube wall 4 outer surfaces of water screen tube 1.
Harrow nail 3 be shaped as " V " font or " Y " font.
Water screen tube 1 and horizontal protective crossbeam 2 are with mutual cross arrangement direction setting.
This device installation process is as follows: harrow nail 3 is welded on 1 fin 7 of water screen tube in Fig. 1 and Fig. 2, on the basis of harrow nail 3, arrange horizontal protective crossbeam 2, in boiler water wall tube wall (base material) 4 other zones, form coated with wear-resisting alloy 5, and on coated with wear-resisting alloy, use coating closed material 6.
In Fig. 3; use supersonic electric arc spraying or hypervelocity flame-spraying technology on boiler water wall tube wall (base material) 4; spraying forms coated with wear-resisting alloy 5, and uses coating closed material 6 on coated with wear-resisting alloy, protection boiler water wall tube wall (base material) 4.
In Fig. 4,,, arrange several horizontal protective crossbeam 2 at the position of circulating fluidized bed boiler water-cooling wall serious wear in water screen tube 1 and fin 7 zones.
In Fig. 5 and example shown in Figure 6, adopt welding " V " font or " Y " font stainless steel harrow nail 3, must be welded on securely on the water-cooling wall fin 7 during welding, and the vertical effective depth of harrow nail 3 and water-cooling wall convex protrusion pipe row highest point is concordant is advisable, and on the horizontal direction straight line.
Claims (3)
1. circulating fluidized bed boiler water-cooling wall shoe, it comprises harrow nail (3), horizontal protective crossbeam (2), coated with wear-resisting alloy (5), closed material layer (6), it is characterized in that: harrow nail (3) is welded between water screen tube (1) on the fin (7), horizontal protective crossbeam (2) is set on harrow nail (3), is provided with coated with wear-resisting alloy (5) and closed material layer (6) successively at water screen tube tube wall (4) outer surface of water screen tube (1).
2. circulating fluidized bed boiler water-cooling wall shoe according to claim 1 is characterized in that: harrow nail (3) be shaped as " V " font or " Y " font.
3. circulating fluidized bed boiler water-cooling wall shoe according to claim 1 is characterized in that: water screen tube (1) and horizontal protective crossbeam (2) are with mutual cross arrangement direction setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202164602U CN201487944U (en) | 2009-09-17 | 2009-09-17 | Anti-abrasion device for circulating fluid bed boiler water wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202164602U CN201487944U (en) | 2009-09-17 | 2009-09-17 | Anti-abrasion device for circulating fluid bed boiler water wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201487944U true CN201487944U (en) | 2010-05-26 |
Family
ID=42426823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202164602U Expired - Lifetime CN201487944U (en) | 2009-09-17 | 2009-09-17 | Anti-abrasion device for circulating fluid bed boiler water wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201487944U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042589A (en) * | 2010-10-11 | 2011-05-04 | 无锡华光锅炉股份有限公司 | Anti-wear structure for water-cooled wall pipes at four corners of circulating fluidized bed boiler |
| CN103712205A (en) * | 2014-01-10 | 2014-04-09 | 哈尔滨红光锅炉总厂有限责任公司 | Circulating fluidized bed hot-water boiler free of abrasion and corrosion |
| CN105782961A (en) * | 2016-05-10 | 2016-07-20 | 北京亚高科能源科技有限公司 | Tail shaft circulating fluidized bed heat conducting oil boiler with abrasion resistant structure |
| CN106224946A (en) * | 2016-09-18 | 2016-12-14 | 广西秀美壮乡能源环保有限公司 | A kind of wear-resistance circulation fluidized bed boiler |
| CN107654793A (en) * | 2017-11-01 | 2018-02-02 | 石会所 | A kind of boiler tube protector and means of defence |
| CN109579042A (en) * | 2018-12-06 | 2019-04-05 | 华电江苏能源有限公司句容发电分公司 | A kind of antiwear dry bottom hopper water-cooling wall |
| CN110319432A (en) * | 2019-04-30 | 2019-10-11 | 舟山旺能环保能源有限公司 | Corrosion resistant waste incinerator superheater and manufacturing method |
-
2009
- 2009-09-17 CN CN2009202164602U patent/CN201487944U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042589A (en) * | 2010-10-11 | 2011-05-04 | 无锡华光锅炉股份有限公司 | Anti-wear structure for water-cooled wall pipes at four corners of circulating fluidized bed boiler |
| CN102042589B (en) * | 2010-10-11 | 2012-12-12 | 无锡华光锅炉股份有限公司 | Anti-wear structure for water-cooled wall pipes at four corners of circulating fluidized bed boiler |
| CN103712205A (en) * | 2014-01-10 | 2014-04-09 | 哈尔滨红光锅炉总厂有限责任公司 | Circulating fluidized bed hot-water boiler free of abrasion and corrosion |
| CN103712205B (en) * | 2014-01-10 | 2015-10-28 | 哈尔滨红光锅炉总厂有限责任公司 | A kind of Circulating Fluidized Bed Hot Water Boiler preventing wearing and tearing and corrode |
| CN105782961A (en) * | 2016-05-10 | 2016-07-20 | 北京亚高科能源科技有限公司 | Tail shaft circulating fluidized bed heat conducting oil boiler with abrasion resistant structure |
| CN106224946A (en) * | 2016-09-18 | 2016-12-14 | 广西秀美壮乡能源环保有限公司 | A kind of wear-resistance circulation fluidized bed boiler |
| CN106224946B (en) * | 2016-09-18 | 2018-10-30 | 广西秀美壮乡能源环保有限公司 | A kind of wear-resistance circulation fluidized bed boiler |
| CN107654793A (en) * | 2017-11-01 | 2018-02-02 | 石会所 | A kind of boiler tube protector and means of defence |
| CN109579042A (en) * | 2018-12-06 | 2019-04-05 | 华电江苏能源有限公司句容发电分公司 | A kind of antiwear dry bottom hopper water-cooling wall |
| CN110319432A (en) * | 2019-04-30 | 2019-10-11 | 舟山旺能环保能源有限公司 | Corrosion resistant waste incinerator superheater and manufacturing method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100526 |
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| CX01 | Expiry of patent term |