CN220216730U - Immersion nozzle heat preservation device - Google Patents
Immersion nozzle heat preservation device Download PDFInfo
- Publication number
- CN220216730U CN220216730U CN202321630436.XU CN202321630436U CN220216730U CN 220216730 U CN220216730 U CN 220216730U CN 202321630436 U CN202321630436 U CN 202321630436U CN 220216730 U CN220216730 U CN 220216730U
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- Prior art keywords
- heat preservation
- tundish
- horizontal part
- submerged
- sleeve
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- 238000004321 preservation Methods 0.000 title claims abstract description 49
- 238000007654 immersion Methods 0.000 title claims description 15
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000835 fiber Substances 0.000 claims abstract description 5
- 229910052863 mullite Inorganic materials 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000005266 casting Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 12
- 229910000831 Steel Inorganic materials 0.000 abstract description 10
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- 238000005336 cracking Methods 0.000 abstract description 5
- 239000011819 refractory material Substances 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
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- 229910052742 iron Inorganic materials 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 3
- 238000007670 refining Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 206010035603 Pleural mesothelioma Diseases 0.000 description 1
- 238000005267 amalgamation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
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- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Abstract
The utility model provides a submerged nozzle heat preservation device which comprises a heat preservation sleeve and a connecting piece, wherein the heat preservation sleeve covers the periphery of a submerged nozzle, the heat preservation sleeve is connected with a tundish through the connecting piece, and the heat preservation sleeve is made of polycrystalline mullite fibers. The heat preservation device is characterized in that the heat preservation sleeve formed by splicing the two semicircular cylinders is connected with the submerged nozzle through the matching of the magnet and the bracket, and the heat preservation device can reduce the temperature drop of the submerged nozzle in the process of replacing the integral tundish and casting molten steel, prevent the submerged nozzle from cracking and ensure the smooth casting. The heat preservation device is flexible to detach and install, can be reused, reduces the consumption of refractory materials, and is more energy-saving and environment-friendly.
Description
Technical Field
The utility model relates to the field of steelmaking continuous casting equipment, in particular to a submerged nozzle heat preservation device.
Background
The main function of the submerged nozzle is to prevent secondary oxidation of pouring flows of a tundish and molten steel splashing, prevent mold flux from being involved in molten steel, and improve the flowing state and heat flow distribution of the pouring flows in the mold. Before the current immersion nozzle is used, the immersion nozzle needs to be baked and heated, in particular to baking of an integral tundish with the immersion nozzle, the immersion nozzle of the tundish is inserted into a baking device, the joint part of the outer wall of the immersion nozzle and the upper port of the baking device is tightly packed with asbestos cloth or is packed and rolled with iron wires, so that the temperature loss of the immersion nozzle in the baking process is reduced, the immersion nozzle is ensured to be baked completely, the immersion nozzle is insulated in the process of replacing the tundish to avoid cracks and damages caused by rapid cooling and rapid heating of the immersion nozzle, and the temperature loss in the steel pouring process is reduced, the temperature of molten steel in the refining process is reduced, and the refining electricity consumption is saved.
Because the immersion nozzle is tightly packed by the asbestos cloth, the immersion nozzle is damaged, and the asbestos cloth is abandoned along with the replacement of the tundish after being packed once, so that larger resource waste is caused, asbestos fiber can cause diseases such as asbestos lung, pleural mesothelioma and the like, and dangerous substances which are completely forbidden in use are selected in many countries. And the iron wire bundle is used for rolling the heat insulation material to cause mechanical and physical damage to the submerged nozzle.
For the above reasons, there is a need for a submerged entry nozzle insulation device that is flexible in disassembly and assembly and that can be reused.
Disclosure of Invention
The utility model aims to provide a submerged nozzle heat preservation device which can reduce the temperature drop of a submerged nozzle, prevent the submerged nozzle from cracking and ensure the smooth casting in the process of replacing an integral tundish and casting molten steel. The heat preservation device is flexible to detach and install and can be reused.
In order to achieve the above object, the present utility model provides the following technical solutions:
the utility model provides a submerged nozzle heat preservation device, includes insulation cover and connecting piece, wherein, the insulation cover covers the periphery of submerged nozzle, the insulation cover passes through the connecting piece is connected with the middle package, the material of insulation cover is polycrystalline mullite fiber.
Further, in the submerged nozzle insulating device, the insulating sleeve comprises a cylinder and a convex edge, the convex edge extends from the upper end of the cylinder to the outside of the cylinder, and the upper surface of the convex edge is in contact with the bottom of the tundish.
Further, in the submerged nozzle heat preservation device, the connecting piece comprises a support, one part of the support is connected with the tundish, and the other part of the support is connected with the heat preservation sleeve.
Further, in the submerged nozzle heat preservation device, the support comprises a first horizontal portion, a vertical portion and a second horizontal portion, the vertical portion is connected between the first horizontal portion and the second horizontal portion, the first horizontal portion and the second horizontal portion extend to two sides of the vertical portion respectively, the first horizontal portion is connected with the tundish, and the second horizontal portion is connected with the heat preservation sleeve.
Further, in the submerged nozzle heat preservation device, the second horizontal portion is connected with the protruding edge, and the second horizontal portion supports the protruding edge at the lower end of the protruding edge.
Further, in the submerged nozzle heat preservation device, a groove is formed in the lower surface of the protruding edge, the width of the groove is larger than that of the second horizontal portion, and the second horizontal portion is located in the groove.
Further, in the submerged nozzle heat preservation device, the connecting piece further comprises a magnet, and a part of the bracket is connected with the tundish through the magnet.
Further, in the submerged nozzle heat preservation device, the cylinder is composed of two semicircular cylinders, and the convex edge is composed of two semicircular rings.
Further, in the submerged nozzle heat preservation device, the two brackets are arranged.
Further, in the immersion nozzle heat preservation device, the number of the magnets is two.
According to analysis, the utility model discloses a submerged nozzle heat preservation device, which is characterized in that a heat preservation sleeve formed by splicing two semicircular cylinders is connected with a submerged nozzle through the matching of a magnet and a bracket, so that the heat preservation device can reduce the temperature drop of the submerged nozzle, prevent the submerged nozzle from cracking and ensure the smooth casting in the process of replacing an integral tundish and casting molten steel. The heat preservation device is flexible to detach and install, can be reused, reduces the consumption of refractory materials, and is more energy-saving and environment-friendly.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. Wherein:
FIG. 1 is a schematic diagram of an embodiment of the present utility model.
Fig. 2 is a schematic structural view of a flange of a heat insulation jacket provided with a groove according to an embodiment of the present utility model.
Reference numerals illustrate: 1, a tundish; 2, a submerged nozzle; 3, heat preservation sleeve; a cylinder 4; 5, convex edges; 6, a bracket; 7 a first horizontal portion; 8 vertical parts; 9 a second horizontal portion; 10 magnets; 11 grooves.
Detailed Description
The utility model will be described in detail below with reference to the drawings in connection with embodiments. The examples are provided by way of explanation of the utility model and not limitation of the utility model. Indeed, it will be apparent to those skilled in the art that modifications and variations can be made in the present utility model without departing from the scope or spirit of the utility model. For example, features illustrated or described as part of one embodiment can be used on another embodiment to yield still a further embodiment. Accordingly, it is intended that the present utility model encompass such modifications and variations as fall within the scope of the appended claims and their equivalents.
In the description of the present utility model, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. refer to the orientation or positional relationship based on that shown in the drawings, merely for convenience of description of the present utility model and do not require that the present utility model must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. The terms "coupled," "connected," and "configured" as used herein are to be construed broadly and may be, for example, fixedly connected or detachably connected; can be directly connected or indirectly connected through an intermediate component; either a wired electrical connection, a radio connection or a wireless communication signal connection, the specific meaning of which terms will be understood by those of ordinary skill in the art as the case may be.
One or more examples of the utility model are illustrated in the accompanying drawings. The detailed description uses numerical and letter designations to refer to features in the drawings. Like or similar designations in the drawings and description have been used to refer to like or similar parts of the utility model. As used herein, the terms "first," "second," and "third," etc. are used interchangeably to distinguish one component from another and are not intended to represent the location or importance of the individual components.
According to an embodiment of the present utility model, as shown in fig. 1 to 2, there is provided a submerged nozzle insulation device, as shown in fig. 1, which includes an insulation sleeve 3 and a connecting piece, wherein the insulation sleeve 3 covers the periphery of the submerged nozzle 2, the insulation sleeve 3 is connected with a tundish 1 through the connecting piece, and the insulation sleeve 3 is made of polycrystalline mullite fiber. The heat preservation device is covered on the periphery of the submerged nozzle 2 by the heat preservation sleeve 3, is used for preserving heat of the submerged nozzle 2, reduces the temperature drop of the submerged nozzle 2 in the process of replacing the integral tundish 1 and casting molten steel, prevents the submerged nozzle 2 from cracking, and ensures the smooth casting.
Further, the thermal insulation sleeve 3 comprises a cylinder 4 and a convex edge 5, the cylinder 4 and the convex edge 5 are of an integrated structure, the convex edge 5 extends from the upper end of the cylinder 4 to the outside of the cylinder 4, and the convex edge 5 is in contact with the bottom of the tundish 1. The convex edge 5 is used for being connected with the tundish 1 through a connecting piece, so that the heat preservation sleeve 3 is fixed on the periphery of the submerged nozzle 2.
Further, the connecting piece comprises a bracket 6, one part of the bracket 6 is connected with the tundish 1, and the other part of the bracket 6 is connected with the heat preservation sleeve 3. The insulation sleeve 3 adopting the polycrystalline mullite fiber board is connected with the tundish 1 through the bracket 6, so that the traditional asbestos and other heath-damaging insulation materials are prevented from being used in the baking process of the submerged nozzle 2, the possibility of mechanical and physical damage of the iron wire bundle rolling insulation materials to the submerged nozzle 2 is reduced, and the damage risk of the submerged nozzle 2 is reduced.
Further, the bracket 6 comprises a first horizontal portion 7, a vertical portion 8 and a second horizontal portion 9, the first horizontal portion 7, the vertical portion 8 and the second horizontal portion 9 are of an integrated structure, the vertical portion 8 is connected between the first horizontal portion 7 and the second horizontal portion 9, the first horizontal portion 7 and the second horizontal portion 9 extend towards two sides of the vertical portion 8 respectively, the first horizontal portion 7 is connected with the tundish 1, and the second horizontal portion 9 is connected with the heat preservation sleeve 3. The second horizontal part 9 is connected with the convex edge 5, and the second horizontal part 9 supports the convex edge 5 at the lower end of the convex edge 5. This arrangement enables the support 6 to provide good support for the insulating sleeve 3.
Further, as shown in fig. 2, in an embodiment of the present utility model, a groove 11 is provided on the lower surface of the flange 5, the width of the groove 11 is greater than the width of the second horizontal portion 9, and the second horizontal portion 9 is located in the groove 11. The arrangement can make the connection between the bracket 6 and the heat preservation sleeve 3 more stable.
Further, in an embodiment of the utility model, the connection piece further comprises a magnet 10, and a part of the bracket 6 is connected to the tundish 1 through the magnet 10. The setting can make insulation cover 3 dismantlement installation nimble like this, and can reuse, reduces refractory material's consumption, simultaneously more energy-concerving and environment-protective. In other embodiments of the utility model, the insulating sleeve 3 is fixedly connected with the submerged nozzle 2 by a welded mortise and tenon structure.
Further, in one embodiment of the present utility model, the cylinder 4 is composed of two semi-cylinders, and the flange 5 is composed of two semi-circular rings. The support 6 has two, and magnet 10 has two, and a magnet 10 and a support 6 cooperation are connected a half drum and a semicircular constitution and are submerged entry nozzle 2, and another magnet 10 and another support 6 cooperation are connected another half drum and another semicircular constitution and are submerged entry nozzle 2, so the setting can conveniently dismantle insulation cover 3.
The heat preservation device can be provided with a plurality of sets according to the number of the immersed water gaps 2 of the tundish 1, each immersed water gap 2 is provided with one set, and the plurality of sets of temperature sleeve devices are mutually independent to realize independent control.
The using method of the heat preservation device comprises the following steps: when the integral tundish 1 is lifted to the position below a tundish roaster to start roasting, two semi-cylinders of the heat preservation sleeve 3 are respectively fixed on an iron bracket 6, and then the two brackets 6 are respectively adsorbed on the bottom of the tundish 1 through a magnet 10, so that the upper surfaces of the semi-cylinders and the convex edges 5 connected with the semi-cylinders are tightly attached to the bottom of the tundish 1, and the arc-shaped inner surfaces of the semi-cylinders are connected with the outer surface of the submerged nozzle 2. The two semi-cylindrical side surfaces are connected, so that the whole insulating sleeve 3 is sleeve-shaped and is connected with the submerged nozzle 2, the submerged nozzle 2 is insulated in the processes of baking the submerged nozzle 2, replacing the integral tundish 1 and casting molten steel, and after casting is finished, the magnet 10, the bracket 6 and the semi-cylindrical 4 can be sequentially taken down, and the submerged nozzle 2 can be repeatedly utilized after being baked later.
From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:
the utility model provides a submerged entry nozzle heat preservation device, this heat preservation device is through magnet 10 and support 6 cooperation with the thermal insulation cover 3 that two semicircle cylinders 4 amalgamation formed with submerged entry nozzle 2 meet, in the integral pouring basket 1 of change, molten steel casting in-process, this heat preservation device can reduce the temperature drop of submerged entry nozzle 2, prevents that submerged entry nozzle 2 from cracking, guarantees going on smoothly of casting. The heat preservation device is flexible to detach and install, can be reused, reduces the consumption of refractory materials, and is more energy-saving and environment-friendly.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The immersion nozzle heat preservation device is characterized by comprising a heat preservation sleeve and a connecting piece, wherein,
the thermal insulation sleeve covers the periphery of the submerged nozzle,
the heat preservation sleeve is connected with the tundish through the connecting piece,
the heat preservation sleeve is made of polycrystalline mullite fiber.
2. The submerged entry nozzle insulating apparatus of claim 1, wherein,
the thermal insulation sleeve comprises a cylinder and a convex edge, the convex edge extends from the upper end of the cylinder to the outside of the cylinder,
the upper surface of the flange is in contact with the bottom of the tundish.
3. The submerged entry nozzle insulating apparatus of claim 2, wherein,
the connecting piece comprises a bracket, a part of the bracket is connected with the tundish,
the other part of the bracket is connected with the heat preservation sleeve.
4. The submerged entry nozzle insulating apparatus of claim 3, wherein,
the bracket comprises a first horizontal part, a vertical part and a second horizontal part, the vertical part is connected between the first horizontal part and the second horizontal part, the first horizontal part and the second horizontal part respectively extend to the two sides of the vertical part,
the first horizontal part is connected with the tundish,
the second horizontal part is connected with the heat preservation sleeve.
5. The submerged entry nozzle insulating apparatus of claim 4, wherein the water supply system comprises a water supply system,
the second horizontal part is connected with the convex edge, and the second horizontal part supports the convex edge at the lower end of the convex edge.
6. The submerged entry nozzle insulating apparatus of claim 4, wherein the water supply system comprises a water supply system,
the lower surface of protruding edge is provided with the recess, the width of recess is greater than the width of second horizontal part, second horizontal part is located in the recess.
7. The submerged entry nozzle insulating apparatus of claim 3, wherein,
the connecting piece also comprises a magnet, and a part of the bracket is connected with the tundish through the magnet.
8. The submerged entry nozzle insulating apparatus of claim 2, wherein,
the cylinder is composed of two semicircular cylinders, and the convex edge is composed of two semicircular rings.
9. The submerged entry nozzle insulating apparatus of claim 3, wherein,
the support has two.
10. The submerged entry nozzle insulating apparatus of claim 7, wherein the water supply system comprises a water supply system,
the number of the magnets is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321630436.XU CN220216730U (en) | 2023-06-25 | 2023-06-25 | Immersion nozzle heat preservation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321630436.XU CN220216730U (en) | 2023-06-25 | 2023-06-25 | Immersion nozzle heat preservation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220216730U true CN220216730U (en) | 2023-12-22 |
Family
ID=89178273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321630436.XU Active CN220216730U (en) | 2023-06-25 | 2023-06-25 | Immersion nozzle heat preservation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220216730U (en) |
-
2023
- 2023-06-25 CN CN202321630436.XU patent/CN220216730U/en active Active
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