CN203454114U - Anti-wear structure for water-cooling wall tube of fluidized bed boiler - Google Patents
Anti-wear structure for water-cooling wall tube of fluidized bed boiler Download PDFInfo
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- CN203454114U CN203454114U CN201320514141.6U CN201320514141U CN203454114U CN 203454114 U CN203454114 U CN 203454114U CN 201320514141 U CN201320514141 U CN 201320514141U CN 203454114 U CN203454114 U CN 203454114U
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- cooling wall
- wear
- bed boiler
- abrasionproof beam
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Abstract
The utility relates to an anti-wear structure for a water-cooling wall tube of a fluidized bed boiler. The anti-wear structure for the water-cooling wall tube of the fluidized bed boiler comprises a water-cooling wall tube and an anti-wear beam; a plurality of circles of anti-wear beams are arranged on the side wall of the water-cooling wall tube at intervals; the distance between every two of the circles of the anti-wear beams is widened gradually from bottom to top; the distance difference between every two of the circles of the anti-wear beams is increased by 0.2 to 0.3 m gradually; the cross section of the anti-wear beam is a trapezoid; the included angle between the side of the trapezoid and the side wall of the water-cooling wall tube is 135 degrees. By adopting the anti-wear structure for the water-cooling wall tube of the fluidized bed boiler, the wear degree of the outer part of the water-cooling tube caused by a material flow in the furnace hearth of a circulation fluidized bed boiler of a power plant can be lightened effectively, and the service life of the water-cooling wall tube is prolonged.
Description
Technical field
The utility model belongs to field of boilers, relates to fluidized-bed combustion boiler, especially a kind of fluid bed boiler water-cooling wall pipe abrasion-proof structure.
Background technology
Along with the pay attention to day by day of country to energy-conserving and environment-protective, power plant's large quantities of CFBBs that started in the last few years, this boiler can be usingd junk, the residual extractive matter of oil etc. as fuel, has greatly reduced the use of ore fuel, and has solved the environmental problems such as waste deposit.But material is serious compared with other model boilers to the wearing and tearing of circulating fluidized bed boiler water-cooling wall pipe, how to carry out abrasionproof effectively and is treated as a professional project.
By retrieval, do not find the technical literature identical with present patent application yet.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art part, and a kind of safe and reliable, difficult drop-off, fluid bed boiler water-cooling wall pipe abrasion-proof structure that anti-wear performance is good are provided.
The utility model solves its technical problem and takes following technical scheme to realize:
A kind of fluid bed boiler water-cooling wall pipe abrasion-proof structure, it is characterized in that: comprise water screen tube and abrasionproof beam, on the sidewall of water screen tube, interval is fixed with multi-turn abrasionproof beam, spacing between this multi-turn abrasionproof beam is widened from bottom to top gradually, and each pitch difference of enclosing between abrasionproof beam increases progressively with 0.2m to 0.3m; The cross sectional shape of abrasionproof beam is trapezoidal, and the angle between this trapezoidal side edges and water screen tube sidewall is 135 degree.
And on described abrasionproof beam internal water cold wall pipe, weld diameter is the stainless steel palladium nail of Φ 6, and hexsteel is installed as abrasionproof beam framework.
And the axial width of described abrasionproof beam is 150mm, the radial thickness of abrasionproof beam is 30mm; .
Advantage of the present utility model and good effect are:
1, this structure construction is easy and simple to handle, affects hardly the heat transfer of furnace heating surface, and installation can not injure water screen tube.Abrasionproof beam lining material is used high-temperature anti-abrasion material, the wearing and tearing of high temperature resistance to erosion, corrosive nature excellence, and, there is not crackle, long service life in difficult drop-off.
2, the abrasionproof beam lining material of this structure is used high-temperature anti-abrasion material, the wearing and tearing of high temperature resistance to erosion, corrosive nature excellence, and, there is not crackle, long service life in difficult drop-off.
3, the utility model can effectively alleviate the outside deterioration degree of material flow to water screen tube in power plant's boiler hearth of circulating fluidized bed, extends the service life of water screen tube.
4, the utility model is according to the number of plies and the spacing of the Materiais for CFB Boilers stream height of emulsion zone and the feature of material flow design abrasionproof beam, the abrasionproof beam wearability of its installation is high, the area that covers water screen tube is little, the conduction of impact heat hardly, material flow is had to good guiding trend, make the material flow concentration of water-cooling wall greatly to reduce, the degree of wear reduces more than 90%.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model schematic partial cross-sectional view.
The specific embodiment
Below in conjunction with accompanying drawing and by specific embodiment, the utility model is described in further detail, and following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
A kind of fluid bed boiler water-cooling wall pipe abrasion-proof structure, comprise water screen tube 1 and abrasionproof beam 2, on the sidewall of water screen tube, interval is fixed with multi-turn abrasionproof beam, according to degree easy to wear, spacing between multi-turn abrasionproof beam is widened from bottom to top gradually, and each pitch difference of enclosing between abrasionproof beam increases progressively with 0.2m to 0.3m; The axial width of abrasionproof beam is 150mm, and the radial thickness of abrasionproof beam is 30mm left and right, and the cross sectional shape of abrasionproof beam is trapezoidal as shown in Figure 2, and the angle a between this trapezoidal side edges and water screen tube sidewall is 135 degree.
Whole adhesion strength for web beam, can also on the inner made fin of abrasionproof beam, weld diameter be stainless steel " V " the type palladium nail (1Cr18Ni9Ti) of Φ 6, and be fixed with hexsteel (1Cr18Ni9Ti) as the skeleton support of abrasionproof beam at palladium nail, strengthen lining material with the bond strength of working face, make it to form integral body, effectively prevent to come off.
The construction procedure of this abrasion-proof structure is:
(1) surface treatment, determines scope and the quantity that abrasionproof beam need to be installed according to situation easy to wear, to preparing the water screen tube surface of installation abrasionproof beam, clear up;
(2) weld palladium nail, weld palladium nail on the water-cooling wall fin after cleaning completes, the spacing between palladium nail is widened from bottom to top gradually;
(3) welding hanging hexsteel, nails on and fixes 15 centimeters of wide hexsteels at palladium;
(4) beam processed, fixes the wear-resistant ramming mass of high temperature by hexsteel, forms inboard wall of burner hearth along the multistage abrasionproof beam of the certain pitch arrangement of water-cooling wall short transverse.
Multistage abrasionproof beam, in effectively reducing, recycle stock stream, in adherent concentration and the flowing velocity on water screen tube surface, can make the life-span of water screen tube improve more than three times.Science, simply the wearing and tearing of ，Wei power plant circulating fluidized bed boiler water-cooling wall pipe provide precautionary measures effectively.
In the present embodiment, the installation of abrasionproof beam can effectively solve wear problem through practice test.For example: supporting three CFBBs of 1,000,000 tons/year of ethylene units of Plant of Tianjin Petrochemical Company, at the boiler operatiopn initial stage, find after water screen tube is using 1 year have obvious wear trace, three boiler wear resistant beams are installed additional to rear boiler operatiopn does not have too large wearing and tearing for 3 years, has saved the cost of overhaul and has also guaranteed the steam of Plant of Tianjin Petrochemical Company the place ahead factory and the supply requirement of electric power.
Claims (3)
1. a fluid bed boiler water-cooling wall pipe abrasion-proof structure, it is characterized in that: comprise water screen tube and abrasionproof beam, on the sidewall of water screen tube, interval is fixed with multi-turn abrasionproof beam, spacing between this multi-turn abrasionproof beam is widened from bottom to top gradually, and each pitch difference of enclosing between abrasionproof beam increases progressively with 0.2m to 0.3m; The cross sectional shape of abrasionproof beam is trapezoidal, and the angle between this trapezoidal side edges and water screen tube sidewall is 135 degree.
2. fluid bed boiler water-cooling wall pipe abrasion-proof structure according to claim 1, is characterized in that: on described abrasionproof beam internal water cold wall pipe, weld diameter is the stainless steel palladium nail of Φ 6, and hexsteel is installed as abrasionproof beam framework.
3. fluid bed boiler water-cooling wall pipe abrasion-proof structure according to claim 1, is characterized in that: the axial width of described abrasionproof beam is 150mm, and the radial thickness of abrasionproof beam is 30mm; .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320514141.6U CN203454114U (en) | 2013-08-21 | 2013-08-21 | Anti-wear structure for water-cooling wall tube of fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320514141.6U CN203454114U (en) | 2013-08-21 | 2013-08-21 | Anti-wear structure for water-cooling wall tube of fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203454114U true CN203454114U (en) | 2014-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320514141.6U Expired - Fee Related CN203454114U (en) | 2013-08-21 | 2013-08-21 | Anti-wear structure for water-cooling wall tube of fluidized bed boiler |
Country Status (1)
| Country | Link |
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| CN (1) | CN203454114U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681863A (en) * | 2019-01-03 | 2019-04-26 | 青海盐湖工业股份有限公司 | A kind of feed back pipeline repair technology of circulating fluidized bed boiler |
| 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 |
-
2013
- 2013-08-21 CN CN201320514141.6U patent/CN203454114U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681863A (en) * | 2019-01-03 | 2019-04-26 | 青海盐湖工业股份有限公司 | A kind of feed back pipeline repair technology of circulating fluidized bed boiler |
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20140821 |
|
| EXPY | Termination of patent right or utility model |