CN222164026U - High-temperature-resistant and wear-resistant silicon carbide refractory material and metal blind pipe composite structure - Google Patents
High-temperature-resistant and wear-resistant silicon carbide refractory material and metal blind pipe composite structure Download PDFInfo
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- CN222164026U CN222164026U CN202420991938.3U CN202420991938U CN222164026U CN 222164026 U CN222164026 U CN 222164026U CN 202420991938 U CN202420991938 U CN 202420991938U CN 222164026 U CN222164026 U CN 222164026U
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- silicon carbide
- blind pipe
- resistant
- metal blind
- pipe
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- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 48
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000002131 composite material Substances 0.000 title claims abstract description 16
- 239000011819 refractory material Substances 0.000 title claims abstract description 12
- 239000003870 refractory metal Substances 0.000 title claims abstract description 8
- 239000011449 brick Substances 0.000 claims abstract description 34
- 239000002184 metal Substances 0.000 claims abstract description 33
- 238000004873 anchoring Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000005299 abrasion Methods 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000003723 Smelting Methods 0.000 description 3
- 238000009415 formwork Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 239000010431 corundum Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The utility model provides a high-temperature-resistant and wear-resistant silicon carbide refractory material and metal blind pipe composite structure, wherein the metal blind pipe is of a structure with a spherical end socket at the lower end, a cold air heat exchange pipe is fixed in the metal blind pipe, a gap is reserved between a lower end interface of the cold air heat exchange pipe and the spherical end socket and is used for effectively expelling hot gas, silicon carbide refractory bricks are annularly hung on the outer wall surface of the metal blind pipe, silicon carbide self-flow castable is filled between the silicon carbide refractory bricks and the outer wall surface of the blind pipe, and the silicon carbide refractory bricks, the silicon carbide self-flow castable and the metal blind pipe jointly form the high-temperature-resistant and wear-resistant composite structure. The metal blind pipe has the advantages of long service life at high temperature, less maintenance, convenient and quick assembly and maintenance, and remarkable economic benefit.
Description
Technical Field
The utility model belongs to the field of blind pipe conveying which needs high temperature resistance and wear resistance in nonferrous smelting industry, and particularly relates to a composite structure of a high temperature resistant and wear resistant silicon carbide refractory material and a metal blind pipe.
Background
In the nonferrous smelting industry, a pipeline is often required to enter a combustion operation space, combustion gas or combustion-supporting gas is introduced to help production operation to be more sufficient, but at high temperature, bending deformation is generated after metal exceeds 800 ℃ and even fusion phenomenon occurs after long-term service, meanwhile, heated particles on the outer wall of the pipeline are continuously washed out to generate serious abrasion, the service life is greatly shortened, the traditional refractory interface cannot realize the condition that cooling and abrasion resistance are simultaneously met, the temperature cannot be conducted out at the same time of high abrasion resistance, the pipeline is caused to be invalid due to long-time high-temperature operation, meanwhile, the bolt on the outer wall of the traditional pipeline adopts a counter bore design, bare leakage screw cap is required to be in contact with a heat source, the problem of connection failure is easily generated, the pipe wall and a refractory layer cannot be tightly matched to form an assembly gap, and the phenomenon of fire-blocking and peeling damage is easily generated.
Disclosure of Invention
In order to solve the technical problems, the utility model aims to provide a high-temperature-resistant and wear-resistant silicon carbide refractory material and metal blind pipe composite structure.
The technical scheme adopted by the utility model for achieving the purposes is as follows:
The high-temperature-resistant and wear-resistant silicon carbide refractory material and metal blind pipe composite structure is characterized in that the metal blind pipe is of a structure with a spherical end socket at the lower end, a cold air heat exchange pipe is fixed in the metal blind pipe, a gap is reserved between an interface at the lower end of the cold air heat exchange pipe and the spherical end socket and is used for effectively exhausting hot gas, a silicon carbide refractory brick is annularly hung on the outer wall surface of the metal blind pipe, silicon carbide self-flow casting materials are filled between the silicon carbide refractory brick and the outer wall surface of the blind pipe, and the silicon carbide refractory brick, the silicon carbide self-flow casting materials and the metal blind pipe jointly form the high-temperature-resistant and wear-resistant composite structure.
The metal blind pipe is connected with a stud, and the silicon carbide refractory brick is hung on the stud of the metal blind pipe through a T-shaped groove on the silicon carbide refractory brick.
The surface of the spherical seal head is uniformly provided with a plurality of V-shaped anchoring parts, the spherical seal head is welded at the lower end of the metal blind pipe in a suspending way through the brick supporting plates, the brick supporting plates are six circumferentially distributed, and an expansion gap is reserved between every two adjacent brick supporting plates.
And a refractory fiber felt is arranged in a gap between two adjacent silicon carbide product bricks and is used for sealing the gap between two refractory bricks.
The high-temperature-resistant and wear-resistant silicon carbide refractory material and metal blind pipe composite structure provided by the utility model can wrap the outer wall of a pipeline to provide high wear resistance and high heat conduction, and then the conducted heat is transmitted out through a cold air heat exchange device, so that the service life is prolonged, meanwhile, the traditional pipeline outer wall bolt adopts a counter bore design, a bare leak screw cap is required to be contacted with a heat source, and the problem of connection failure is easy to occur. Moreover, the pipe wall and the refractory layer cannot be tightly matched to form an assembly gap, the phenomenon of fire-bouncing peeling damage is easy to occur, the problem that the metal pipe cannot be used at high temperature under the working condition of strong friction is effectively solved, the problem that the refractory material on the outer layer of the metal pipe is easy to fall off when being used is prolonged, the maintenance amount is small, the assembly and the maintenance are convenient and quick, and the economic benefit is remarkable.
Drawings
FIG. 1 is a layout view of a blind pipe installation structure;
FIG. 2 is an enlarged view of the position I of FIG. 1;
FIG. 3 is an enlarged view of the position II of FIG. 1;
fig. 4 is an assembly layered layout.
In the figure, the heat exchange tube comprises a 1-cold air heat exchange tube, a 2-metal blind tube, a 3-silicon carbide self-flowing castable, a 4-silicon carbide refractory brick, a 5-corundum castable, a 6-T-shaped groove, a 7-stud, an 8-nut, a 9-reserved threaded hole, a 10-refractory fiber felt, a 11-brick supporting plate and a 12-V-shaped anchoring piece.
Detailed Description
The utility model will be described in detail with reference to the accompanying drawings and specific embodiments:
As shown in figures 1, 2, 3 and 4, the high-temperature-resistant and wear-resistant silicon carbide refractory material and metal blind pipe composite structure is characterized in that the metal blind pipe 2 is of a structure with a spherical end socket at the lower end, a cold air heat exchange pipe 1 is fixed in the metal blind pipe 2, a gap is reserved between a lower end interface of the cold air heat exchange pipe 1 and the spherical end socket for effectively exhausting hot gas, a silicon carbide refractory brick 7 is annularly hung on the outer wall surface of the metal blind pipe 4, a silicon carbide self-flow castable 3 is filled between the silicon carbide refractory brick 7 and the outer wall surface of the metal blind pipe 2, and the silicon carbide refractory brick, the silicon carbide self-flow castable and the metal blind pipe jointly form the high-temperature-resistant and wear-resistant composite structure.
The blind pipe 2 on reserve screw hole 9 for connect stud 7, screw hole 9 evenly distributed is on outer wall circumference, inlay the adjustable nut 8 of degree of depth assembly feed degree of depth according to carborundum resistant firebrick T type groove 6.
The surface of the spherical sealing head at the lowest end of the blind pipe 1 is welded with V-shaped anchoring pieces 12, the proper V-shaped anchoring pieces 12 are selected and matched according to the thickness of a material layer to be poured, and the V-shaped anchoring pieces are uniformly distributed on the spherical sealing head surface. And then pouring and molding corundum castable 5 on the spherical end socket outline formwork, carrying and baking the spherical end socket outline formwork after the spherical end socket outline formwork has certain strength, welding the brick supporting plate 11 made of stainless steel at the upper part 310s after the strength meets the requirement, wherein the brick supporting plate 11 is not a whole block, is divided into six blocks in the circumferential direction, is fixed in a suspended welding mode, and can reserve an expansion gap, after the stud 7 and the nut 8 are installed, the silicon carbide refractory product 4 can be hung from top to bottom in sequence through the T-shaped groove 6, the silicon carbide refractory brick is provided with a T-shaped groove 6 with a through upper end surface and a lower section, chamfer angles are arranged at the edges of the T-shaped groove 6, connecting bolt assemblies are embedded and matched along the T-shaped groove 6, and two adjacent silicon carbide product bricks in the horizontal vertical direction are provided with refractory fiber mats 10 in a gap for sealing the gap of the two refractory bricks. The silicon carbide product bricks are provided with limiting devices, certain protrusion heights are provided, after the positions of the nuts 8 on the studs 7 are adjusted, the nuts are in point contact with the curved surfaces of the shells of the blind pipes 2, so that the installation size can be guaranteed, after two or three layers of silicon carbide bricks are built, the cavity formed by the silicon carbide self-flow castable 3 and the blind pipe walls can be filled, and in the filling process, in order to guarantee that the whole gap is filled with the silicon carbide self-flow castable 3, the nuts are lightly knocked, and the flowing process of the silicon carbide self-flow castable is accelerated.
The metal fitting with the reserved threaded hole connected with the stud 7 is wound with anti-expansion refractory fiber cotton on the axial curved surface, and meanwhile, the V-shaped anchoring piece 12 on the end face of the spherical end socket is subjected to expansion treatment of the refractory fiber cotton.
The utility model is not only used in the nonferrous smelting industrial device, but also suitable for various heat preservation scales such as plane walls, circumference furnace walls and the like, and belongs to the protection scope of the utility model.
Claims (4)
1. A high-temperature-resistant and wear-resistant silicon carbide refractory material and metal blind pipe composite structure is characterized in that the metal blind pipe is of a structure with a spherical end socket at the lower end, a cold air heat exchange pipe is fixed in the metal blind pipe, a gap is reserved between an interface at the lower end of the cold air heat exchange pipe and the spherical end socket and is used for effectively expelling hot gas, silicon carbide refractory bricks are annularly hung on the outer wall surface of the metal blind pipe, silicon carbide self-flow casting materials are filled between the silicon carbide refractory bricks and the outer wall surface of the blind pipe, and the silicon carbide refractory bricks, the silicon carbide self-flow casting materials and the metal blind pipe jointly form the high-temperature-resistant and wear-resistant composite structure.
2. The composite structure of high temperature and abrasion resistant silicon carbide refractory material and a metal blind pipe as claimed in claim 1, wherein the metal blind pipe is connected with a stud, and the silicon carbide refractory brick is hung on the stud of the metal blind pipe through a T-shaped groove on the stud.
3. The composite structure of the high-temperature-resistant and wear-resistant silicon carbide refractory material and the metal blind pipe is characterized in that a plurality of V-shaped anchoring parts are uniformly distributed on the surface of the spherical sealing head, the spherical sealing head is welded at the lower end of the metal blind pipe in a hanging manner through brick supporting plates, the brick supporting plates are six circumferentially distributed, and an expansion gap is reserved between every two adjacent brick supporting plates.
4. The composite structure of refractory silicon carbide material and blind metal pipe according to claim 1, wherein a refractory fiber felt is arranged in a gap between two adjacent blocks of silicon carbide product bricks for sealing the gap between the two blocks of refractory bricks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420991938.3U CN222164026U (en) | 2024-05-09 | 2024-05-09 | High-temperature-resistant and wear-resistant silicon carbide refractory material and metal blind pipe composite structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420991938.3U CN222164026U (en) | 2024-05-09 | 2024-05-09 | High-temperature-resistant and wear-resistant silicon carbide refractory material and metal blind pipe composite structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222164026U true CN222164026U (en) | 2024-12-13 |
Family
ID=93773215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420991938.3U Active CN222164026U (en) | 2024-05-09 | 2024-05-09 | High-temperature-resistant and wear-resistant silicon carbide refractory material and metal blind pipe composite structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222164026U (en) |
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2024
- 2024-05-09 CN CN202420991938.3U patent/CN222164026U/en active Active
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