CN215411850U - Wear-resistant boiler furnace four-corner structure - Google Patents
Wear-resistant boiler furnace four-corner structure Download PDFInfo
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- CN215411850U CN215411850U CN202120991583.4U CN202120991583U CN215411850U CN 215411850 U CN215411850 U CN 215411850U CN 202120991583 U CN202120991583 U CN 202120991583U CN 215411850 U CN215411850 U CN 215411850U
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Abstract
The utility model discloses a wear-resistant boiler furnace four-corner structure, which comprises water wall tubes arranged on the side wall of a furnace and finned tubes connected between the water wall tubes, wherein wear-resistant layers are arranged outside the water wall tubes at each corner of the furnace, the wear-resistant layers at least extend to third water wall tubes at two sides of the corner of the furnace, the corner of each wear-resistant layer is a smooth arc surface, and the surface of each wear-resistant layer is an inward inclined surface. The utility model has simple structure, improves the wear-resisting strength of the boiler furnace and prolongs the service life.
Description
Technical Field
The utility model relates to the field of heat island boilers, in particular to a wear-resistant boiler furnace four-corner structure.
Background
With the development of the circulating fluidized bed boiler technology, the circulating fluidized bed boiler has the advantages of high efficiency, environmental protection, wide coal adaptability and the like, and is more and more widely applied. The circulating fluidized bed boiler is in a high-temperature and high-solid-particle continuous scouring environment, so that the boiler equipment is seriously abraded. Especially, the four corners of the boiler chamber are the areas with the highest ash concentration in the hearth, so the abrasion of the four corners of the hearth is particularly prominent. And as the four corners of the hearth are made of the on-site castable, the structure is shown in figure 1, the pouring area is small, and the pouring surface is right-angled, so that the water wall is abraded and the tube burst is caused, the operation safety of the boiler is seriously influenced, and the boiler is stopped.
Disclosure of Invention
The utility model aims to provide a wear-resistant boiler furnace four-corner structure which is simple in structure and long in service life, aiming at the defects of the prior art.
The technical scheme of the utility model is as follows:
the utility model provides a wear-resisting boiler furnace four corners structure, is including setting up the water-cooling wall pipe at the furnace lateral wall and connecting the finned tube between the water-cooling wall pipe, all be equipped with the wearing layer outside the water-cooling wall pipe wall of each corner of furnace, the wearing layer extends to on the third water-cooling wall pipe of furnace turning both sides at least, the corner of wearing layer is the rounding off arc face, the surface of wearing layer is the inclined plane of leanin.
Furthermore, the finned tube and the water wall tube are provided with metal wear-resistant coatings.
Furthermore, the finned tubes and the water wall tubes close to the wear-resistant layer are provided with metal wear-resistant coatings.
Further, the distance between the side edge of the wear-resistant layer and the center line of the water wall tube close to the wear-resistant layer is 30-35 mm.
Further, the wear-resistant layer extends to half of the third water wall tube finned tube.
Furthermore, the two sides of the water wall pipe laid by the wear-resistant layer are provided with the grabbing nails which are of concave structures.
Adopt above-mentioned technical scheme to have following beneficial effect:
the structure is simple, the wear-resistant layer at least extends to the third water-cooled wall tubes on two sides of the corner of the hearth, the corner of the wear-resistant layer is a smooth arc surface, and the surface of the wear-resistant layer is an inward inclined surface.
The wearing layer extends to half of the third water wall tube finned tube, effectively protects the third water wall tube adjacent to the wearing layer, and increases the safety factor of the water wall tube for preventing abrasion.
The finned tubes and the water wall tubes close to the wear-resistant layers are provided with metal wear-resistant coatings, and the wear resistance of the finned tubes and the water wall tubes close to the wear-resistant layers can be improved by additionally arranging the metal wear-resistant coatings.
The following description is further described in conjunction with the accompanying drawings and the detailed description.
Drawings
FIG. 1 is a schematic diagram of a prior art structure;
FIG. 2 is a schematic structural view of the present invention;
fig. 3 is a schematic structural view of the present invention with a metal wear-resistant layer.
In the attached drawing, 1 is a water wall tube, 2 is a finned tube, 3 is a wear-resistant layer, 4 is a grab nail, and 5 is a metal wear-resistant coating.
Detailed Description
Specific example 1:
referring to fig. 2 and 3, the wear-resistant four-corner structure of the boiler furnace comprises water-cooled wall tubes 1 arranged on the side wall of the furnace and finned tubes 2 connected between the water-cooled wall tubes, wherein wear-resistant layers 3 are arranged outside the water-cooled wall tubes at the corners of the furnace, the wear-resistant layers 3 are formed by casting a casting material in situ, the casting material is cement mortar concrete, the casting material is dense after construction, and the casting material is smooth after construction. Wear-resisting layer 3 extends to on the third water wall pipe of furnace turning both sides at least, 3 lateral margins of wear-resisting layer are close to the distance of the water wall pipe central line of wear-resisting layer 3 is 30 ~ 35mm, the corner of wear-resisting layer 3 is the rounding off cambered surface, the surface of wear-resisting layer 3 is the inclined plane of leanin, and the thickness of 5 edges of the more wear-resisting layer of corner of wear-resisting layer 3 is thin, makes the material of whereabouts along the four corners gather together, and through the time inspection, the wearing and tearing of water wall have slowed down effectively, and the effect is better. The two sides of the water wall pipe laid by the wear-resistant layer 3 are provided with the grabbing nails 4, the grabbing nails 4 are of concave structures, and the grabbing nails 4 are welded and fixed on the finned pipe 2.
Referring to fig. 3, possibly, the finned tube 2 and the water wall tube 1 close to the wear-resistant layer are provided with a metal wear-resistant coating 5, the metal wear-resistant coating 5 is formed by spraying existing metal wear-resistant materials, and the thickness of the metal wear-resistant layer 5 is 0.5-0.8 mm. Therefore, the water wall tube adjacent to the castable can be effectively protected, and the safety factor of preventing the water wall tube from being abraded is increased.
In this particular embodiment: the wear-resistant layer 3 is 60mm in widest thickness on the surface and 55mm in narrowest thickness, the wear-resistant layer 3 extends to half of a third water wall tube finned tube, a metal wear-resistant coating 5 is arranged on a finned tube between the third water wall tube and a fourth water wall tube, the fourth water wall tube is provided with the metal wear-resistant coating 5, the thickness of the metal wear-resistant coating 5 is 0.5mm, and the distance from the outer side edge of the third water wall tube to the central line of the fourth water wall tube is 30 mm.
Claims (6)
1. The utility model provides a wear-resisting boiler furnace four corners structure, is including setting up the finned tube between the water wall pipe and connecting in the water wall pipe of furnace lateral wall, its characterized in that: the hearth structure is characterized in that wear-resistant layers are arranged outside the water wall pipes at the corners of the hearth, the wear-resistant layers at least extend to the third water wall pipes on two sides of the corners of the hearth, the corners of the wear-resistant layers are smooth arc surfaces, and the surfaces of the wear-resistant layers are inclined planes inclined inwards.
2. The wear-resistant boiler furnace quadrangle structure of claim 1, wherein: and the finned tube and the water wall tube are provided with metal wear-resistant coatings.
3. The wear-resistant boiler furnace quadrangle structure of claim 2, wherein: and the finned tubes and the water wall tubes close to the wear-resistant layer are provided with metal wear-resistant coatings.
4. The wear-resistant boiler furnace quadrangle structure of claim 1, wherein: the distance between the side edge of the wear-resistant layer and the center line of the water wall tube close to the wear-resistant layer is 30-35 mm.
5. The wear-resistant boiler furnace quadrangle structure of claim 1, wherein: and the wear-resistant layer extends to a half part of the third water wall tube finned tube.
6. The wear-resistant boiler furnace quadrangle structure of claim 1, wherein: the two sides of the water wall pipe laid by the wear-resistant layer are provided with the grabbing nails which are of concave structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120991583.4U CN215411850U (en) | 2021-05-11 | 2021-05-11 | Wear-resistant boiler furnace four-corner structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120991583.4U CN215411850U (en) | 2021-05-11 | 2021-05-11 | Wear-resistant boiler furnace four-corner structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215411850U true CN215411850U (en) | 2022-01-04 |
Family
ID=79674765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120991583.4U Active CN215411850U (en) | 2021-05-11 | 2021-05-11 | Wear-resistant boiler furnace four-corner structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215411850U (en) |
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2021
- 2021-05-11 CN CN202120991583.4U patent/CN215411850U/en active Active
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