CN214745889U - Improved alloy wear-resistant plate for water-cooled wall of CFB boiler - Google Patents
Improved alloy wear-resistant plate for water-cooled wall of CFB boiler Download PDFInfo
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- CN214745889U CN214745889U CN202120713262.8U CN202120713262U CN214745889U CN 214745889 U CN214745889 U CN 214745889U CN 202120713262 U CN202120713262 U CN 202120713262U CN 214745889 U CN214745889 U CN 214745889U
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Abstract
The utility model discloses an improvement type alloy wear plate of CFB boiler water-cooling wall belongs to circulating fluidized bed boiler technical field, and it includes the alloy wear plate, three navigation key has been seted up to the upper surface of alloy wear plate, and the navigation key that is located both sides is the fourth circular arc, and the navigation key is the half circular arc in the middle of being located, and the surface that is located both sides navigation key all is provided with the locating piece. This improvement type alloy wear plate of CFB boiler water-cooling wall, through setting up the increase welding depth, this design is under the prerequisite that utilizes original alloy wear plate to form grid formula stationary flow protection, the improvement is optimized through the structure to alloy wear plate, fixing device has been installed additional, interval when adjusting the welding through addding the navigation key is 1.6mm, thereby reach the deepening welding depth of fusion, improve welding strength's effect, each alloy wear plate welded reliability has been guaranteed, the possibility that the welding drops has been reduced, therefore boiler unit's security, stability is also to be improved.
Description
Technical Field
The utility model belongs to the technical field of circulating fluidized bed boiler, specifically be an improvement type alloy wear plate of CFB boiler water-cooling wall.
Background
The heat transfer efficiency of the hearth directly influences the overall operation efficiency of a boiler unit, in the heat transfer process of the hearth, the heat transfer of each heating surface is the most important heat transfer process, the main processes include the heat transfer between the heating surface and flame in the boiler and the heat transfer between the heating surface and a working medium, the heat transfer is one of the most important heating surfaces in the boiler, the abrasion problem of the water-cooled wall of the hearth is a key problem influencing the boiler efficiency, and the abrasion prevention improvement of the heating surface of the boiler at present mainly comprises the abrasion prevention protection of the surface of the water-cooled wall by paving abrasion-resistant materials such as refractory castable and abrasion-proof beams. In addition, for the use of various anti-abrasion coatings, high-temperature resistant coatings must be selected for spraying, the main function of the anti-abrasion coating is to protect the heating surface of the boiler and prevent the heating surface from being abraded so as to influence the stability of the integral operation of the unit, however, the existing various anti-abrasion modification schemes of the water-cooled wall are passive anti-abrasion technologies.
In terms of the existing modification and optimization mode, if the structure and the arrangement are optimized, the improvement of the heat transfer of the hearth is realized, but due to the complexity of a boiler unit, the modification of a heating surface is relatively complex, and the safety and the stability of the whole operation must be considered in any structural adjustment; if the heating surface is coated with wear-resistant paint or is paved with refractory castable and anti-abrasion beams, the heat transfer efficiency of the heating surface is affected. Therefore, the grating abrasion-proof technology can be selected for active abrasion resistance, the alloy abrasion-proof plate is welded on the fins of the water wall to form the grating, the wall flow on the surface of the water wall is reduced, and the purpose of reducing the abrasion of the water wall is achieved.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In order to overcome prior art's above-mentioned defect, the utility model provides an improvement type alloy wear plate of CFB boiler water-cooling wall has solved and has optimized the mode with current transformation, if carry out the structure, the optimization of arranging, promotion to furnace heat transfer has certain effect, nevertheless because boiler unit's complexity, the transformation that receives the hot side is also complicated relatively, the adjustment of any structure all must consider the security and the stability of whole operation, if to receiving the wear-resistant coating of hot side spraying or lay the refractory castable, the abrasionproof roof beam then can influence its heat transfer efficiency. Therefore, the grid abrasion-proof technology can be selected for active abrasion resistance, the alloy abrasion-proof plate is welded on the fins of the water wall to form the grid, the wall flow on the surface of the water wall is reduced, and therefore the purpose of reducing the abrasion of the water wall is achieved.
(II) technical scheme
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an improvement type alloy wear plate of CFB boiler water-cooling wall, includes the alloy wear plate, three positioning key has been seted up to the upper surface of alloy wear plate, and the positioning key is the fourth circular arc that is located both sides, and the positioning key is the half circular arc in the middle of being located, and the surface that is located both sides positioning key all is provided with the locating piece, and the surface that is located middle positioning key is provided with two locating pieces, two interior arcs have been seted up to the lower surface of alloy wear plate, and the position of two interior arcs and alloy wear plate lower surface contact all is provided with the chamfer.
As a further aspect of the present invention: the mounting groove has been seted up to the right flank of alloy wear plate, the left surface fixedly connected with mounting bar of alloy wear plate, the cross section of mounting bar and mounting groove all sets up to the T font, the shape looks adaptation of mounting bar and mounting groove.
As a further aspect of the present invention: the diameter of the positioning block is set to be 3.2mm, and the radian of the chamfer is 45 degrees.
As a further aspect of the present invention: the length and the height of the alloy wear-resistant plate are 165mm and 65mm respectively, and the thickness of the alloy wear-resistant plate is set to be 4.5 mm.
As a further aspect of the present invention: the radius of the inner arc is 13mm, and the radius of the positioning key is set to be 32 mm.
(III) advantageous effects
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. this improvement type alloy wear plate of CFB boiler water-cooling wall, through setting up the increase welding depth, this design is under the prerequisite that utilizes original alloy wear plate to form grid formula stationary flow protection, the improvement is optimized through the structure to alloy wear plate, fixing device has been installed additional, interval when adjusting the welding through addding the navigation key is 1.6mm, thereby reach the deepening welding depth of fusion, improve welding strength's effect, each alloy wear plate welded reliability has been guaranteed, the possibility that the welding drops has been reduced, therefore boiler unit's security, stability is also to be improved.
2. This improvement type alloy wear plate of CFB boiler water-cooling wall, through setting up inner arc and chamfer, because of the acute angle ratio of straight flange and circular arc juncture is outstanding, make easily that the wainscot flow through here produces the vortex and then causes local wear, make the inner arc at this alloy wear plate, and carry out the chamfer at the lower flange and the arc juncture of this alloy wear plate, can eliminate the local vortex that produces when the local wall-sticking flow of water-cooling wall flows to a certain extent, and then prevent the production of local wear.
3. The improved alloy wear-resistant plate of the CFB boiler water-cooled wall has the advantage that by arranging the alloy wear-resistant plate, the alloy wear-resistant plate has the effect of reducing the temperature in the boiler, so that the NOx amount generated by the operation of a boiler unit is reduced, and the improved alloy wear-resistant plate has important significance for protecting the environment, saving energy and reducing emission.
Drawings
Fig. 1 is a schematic three-dimensional structure of the present invention;
fig. 2 is an enlarged schematic structural view at a position a of the present invention;
in the figure: 1 alloy wear-proof plate, 2 positioning keys, 3 chamfers, 4 positioning blocks, 5 mounting grooves, 6 mounting bars and 7 inner circular arcs.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
As shown in fig. 1-2, the utility model provides a technical solution: the utility model provides an improvement type alloy wear plate of CFB boiler water-cooling wall, including alloy wear plate 1, three navigation key 2 has been seted up to alloy wear plate 1's upper surface, it is the fourth circular arc to be located both sides navigation key 2, navigation key 2 is the half circular arc in the middle of being located, the surface that is located both sides navigation key 2 all is provided with locating piece 4, the surface that is located middle navigation key 2 is provided with two locating pieces 4, two interior arcs 7 have been seted up to alloy wear plate 1's lower surface, and the position of two interior arcs 7 and the 1 lower surface contact of alloy wear plate all is provided with chamfer 3, through setting up the increase welding depth, thereby reach the deepening welding depth of fusion, improve welding strength's effect, each 1 welded reliability of alloy wear plate has been guaranteed, the possibility that the welding drops has been reduced, therefore boiler unit's security, stability also will improve.
Specifically, as shown in fig. 1, the right side surface of the alloy wear-resistant plate 1 is provided with a mounting groove 5, and the left side surface of the alloy wear-resistant plate 1 is fixedly connected with a mounting bar 6, so that the lower straight edge and the arc junction of the alloy wear-resistant plate 1 are chamfered due to the arrangement of the inner arc 7 and the chamfer 3. Before the modification, the straight flange is more outstanding with the acute angle of circular arc juncture, make easily that the wainscot through here flows and produces the vortex and then causes local wear, be smooth transition after the modification, can eliminate the local vortex that produces when the local wall sticking of water wall flows, and then prevent the production of local wear, the cross section of mounting bar 6 and mounting groove 5 all sets up to the T font, the shape looks adaptation of mounting bar 6 and mounting groove 5, because of being provided with mounting groove 5 and mounting bar 6, make at the in-process of installing a plurality of alloy wear plates 1, can fix alloy wear plates 1 through mounting groove 5 and mounting bar 6, thereby the condition that appears the dislocation when having reduced and leading to alloy wear plates 1 to weld because of alloy wear plates 1 slides.
Specifically, as shown in fig. 2, the diameter of the positioning block 4 is set to be 3.2mm, the radian of the chamfer 3 is 45 degrees, the length and the height of the alloy wear plate 1 are 165mm and 65mm respectively, the thickness of the alloy wear plate 1 is set to be 4.5mm, and by arranging the alloy wear plate 1, the amount of NOx generated by the operation of the boiler unit is reduced due to the effect of reducing the temperature in the boiler, which is of great significance to environmental protection, energy conservation and emission reduction, the radius of the inner arc 7 is 13mm, and the radius of the positioning key 2 is set to be 32 mm.
The utility model discloses a theory of operation does:
when in use, only the alloy wear-resistant plate 1 needs to be installed, because the two sides of the alloy wear-resistant plate are respectively provided with the installation groove 5 and the installation strip 6, in the installation process, only the installation groove 5 and the installation strip 6 need to be spliced and then fixed in a welding mode, and in the welding process, the installation groove 5 and the installation strip 6 can play a limiting effect, so that the installation of the alloy wear-resistant plate 1 is ensured, and after a plurality of alloy wear-resistant plates 1 are installed, only the alloy wear-resistant plates are installed in a CFB boiler, when the wear-resistant plates need to be installed, only the pipelines needing to be welded are placed in the positioning keys 2, at the moment, the positioning blocks 4 can be in contact with the surfaces of the pipelines and extrude the pipelines, then, the connecting parts of the alloy wear-resistant plates 1 are welded, so that the alloy wear-resistant plates 1 are connected and fixed, and the positioning of the wear-resistant plates is fixed with the surface of a wall, the wear plate will now secure the pipe.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (5)
1. The utility model provides an improvement type alloy wear plate of CFB boiler water-cooled wall, includes alloy wear plate (1), its characterized in that: three positioning keys (2) are arranged on the upper surface of the alloy wear-resistant plate (1), the positioning keys (2) on the two sides are quarter circular arcs, the positioning key (2) in the middle is half circular arcs, the positioning blocks (4) are arranged on the outer surfaces of the positioning keys (2) on the two sides, the two positioning blocks (4) are arranged on the outer surface of the positioning key (2) in the middle, two inner circular arcs (7) are arranged on the lower surface of the alloy wear-resistant plate (1), and chamfers (3) are arranged at the positions of the two inner circular arcs (7) in contact with the lower surface of the alloy wear-resistant plate (1).
2. The improved alloy wear plate for the water wall of the CFB boiler of claim 1, wherein: mounting groove (5) have been seted up to the right flank of alloy wear plate (1), the left surface fixedly connected with mounting bar (6) of alloy wear plate (1), the cross section of mounting bar (6) and mounting groove (5) all sets up to the T font, the shape looks adaptation of mounting bar (6) and mounting groove (5).
3. The improved alloy wear plate for the water wall of the CFB boiler of claim 1, wherein: the diameter of the positioning block (4) is set to be 3.2mm, and the radian of the chamfer (3) is 45 degrees.
4. The improved alloy wear plate for the water wall of the CFB boiler of claim 1, wherein: the length and the height of the alloy wear-resistant plate (1) are 165mm and 65mm respectively, and the thickness of the alloy wear-resistant plate (1) is set to be 4.5 mm.
5. The improved alloy wear plate for the water wall of the CFB boiler of claim 1, wherein: the radius of the inner circular arc (7) is 13mm, and the radius of the positioning key (2) is set to be 32 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120713262.8U CN214745889U (en) | 2021-04-08 | 2021-04-08 | Improved alloy wear-resistant plate for water-cooled wall of CFB boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120713262.8U CN214745889U (en) | 2021-04-08 | 2021-04-08 | Improved alloy wear-resistant plate for water-cooled wall of CFB boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214745889U true CN214745889U (en) | 2021-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120713262.8U Active CN214745889U (en) | 2021-04-08 | 2021-04-08 | Improved alloy wear-resistant plate for water-cooled wall of CFB boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214745889U (en) |
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2021
- 2021-04-08 CN CN202120713262.8U patent/CN214745889U/en active Active
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