CN219861435U - Novel heat insulation plate for lower groove of RH furnace - Google Patents
Novel heat insulation plate for lower groove of RH furnace Download PDFInfo
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- CN219861435U CN219861435U CN202320800488.0U CN202320800488U CN219861435U CN 219861435 U CN219861435 U CN 219861435U CN 202320800488 U CN202320800488 U CN 202320800488U CN 219861435 U CN219861435 U CN 219861435U
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- 238000009413 insulation Methods 0.000 title claims description 44
- 239000002184 metal Substances 0.000 claims abstract description 16
- 239000002657 fibrous material Substances 0.000 claims abstract description 5
- 239000000835 fiber Substances 0.000 claims description 56
- 229910000831 Steel Inorganic materials 0.000 claims description 51
- 239000010959 steel Substances 0.000 claims description 51
- 239000000463 material Substances 0.000 claims description 19
- 238000004873 anchoring Methods 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000007670 refining Methods 0.000 abstract description 5
- 210000001503 joint Anatomy 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 238000007598 dipping method Methods 0.000 description 4
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The utility model belongs to the field of RH vacuum refining treatment equipment, and particularly discloses a novel heat insulating plate for a lower groove of an RH furnace, which comprises a metal part and a refractory lining, wherein the metal part is hung below the lower groove of the RH furnace, and comprises a first sub-plate body and a second sub-plate body which are symmetrically arranged left and right, the first sub-plate body and the second sub-plate body are fixedly connected through a connecting component, the first sub-plate body and the second sub-plate body are in butt joint to form a chassis which is matched with the lower groove of the RH furnace, a surrounding plate is arranged on the outer edge of the chassis, two opposite sides of the center of the chassis are respectively provided with a avoiding cylinder with two open ends, the lower part of the chassis, the periphery of the surrounding plate and the upper part of the chassis are respectively provided with the refractory lining, and the refractory lining is made of fiber materials.
Description
Technical Field
The utility model belongs to the field of RH vacuum refining treatment equipment, and particularly discloses a novel heat insulating plate for a lower groove of an RH furnace.
Background
At present, the steel shell at the bottom of the trough furnace of the general RH refining furnace is of a concave arc structure, the two sides of the bottom of the furnace are provided with a dipping pipe and a circulating pipe, before molten steel is treated, the dipping pipe is immersed into ladle molten steel to be treated, two dipping pipes communicated with a vacuum furnace are arranged as a rising pipe and a falling pipe, argon is continuously blown into the molten steel from the rising pipe, and a high static pressure difference is generated by the falling pipe which does not blow argon relatively, so that molten steel enters from the rising pipe and flows into the falling pipe through the lower part of the vacuum furnace, and then flows into the ladle molten steel, and the steps are repeated continuously, thereby finishing the refining treatment of the molten steel.
In the RH refining process, the distance between the bottom steel shell of the lower trough furnace and molten steel is smaller, the bottom steel shell can be heated to deform under the actions of molten steel splashing and heat radiation, and then the circulating pipe bricks are broken, annular gaps are formed between the dip pipe and the circulating pipe, the bottom flange deforms and even the welding seams crack, so that the RH furnace is short in service life and even has the risk of penetrating steel, and therefore, a heat insulation plate is usually required to be arranged between the bottom steel shell and the dip pipe, so that the deformation of the bottom steel shell is prevented from being too large, and the risk of penetrating steel is reduced.
The existing heat insulation plate for the lower groove of the RH furnace is a metal insert with a refractory lining and is divided into two halves, and corresponding positions on the two sides of the center are provided with avoiding holes so as to avoid a dipping pipe and a circulating pipe; this approach has the following drawbacks: 1. the refractory lining used for the heat insulating plate is usually castable and is fixed on a metal part through an anchoring piece, so that the castable is eroded and falls off in the use process due to high temperature of molten steel, the heat insulating plate is burnt out, the heat insulating plate needs to be replaced frequently, and the service life is short; 2. the castable used for the heat insulation plate is fixed through the anchoring piece, and the density of the castable is relatively high, so that the welding density of the anchoring piece is high, the manufacture is difficult, and the production period is long in order to ensure the fixed strength of the castable; 3. the castable used for the heat insulation plate has large heat conductivity coefficient and poor heat insulation effect, and cannot well ensure that the furnace bottom steel shell is not deformed.
Disclosure of Invention
In order to solve the problems in the background technology, the utility model discloses a novel heat insulating plate for a lower groove of an RH furnace, which comprises a metal piece and a refractory lining made of fiber materials, has good heat insulating effect and fewer anchoring pieces, shortens the manufacturing period of the heat insulating plate, and avoids the time for baking castable.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a RH stove lower part groove is with novel heat insulating board, including metalwork and refractory lining, the metalwork is hung and is established in the below in RH stove lower part groove, and the metalwork includes first minute disk body and the second minute disk body that bilateral symmetry set up, connects fixedly through coupling assembling between first minute disk body and the second minute disk body, and first minute disk body and second minute disk body dock the chassis that forms to match the setting with RH stove lower part groove, enclose at the outer fringe of chassis and be equipped with the bounding wall, be provided with the open section of thick bamboo of avoiding in both ends respectively in chassis center both sides and the position that RH stove dip pipe corresponds, be provided with the refractory lining respectively in the lower part of chassis, the periphery of bounding wall and the upper portion of chassis, the refractory lining is the fibre material, and the refractory lining passes through the anchor assembly and is connected with the metalwork.
Further, the novel heat insulation plate is used for the groove at the lower part of the RH furnace, the fireproof lining arranged at the lower part of the chassis is a fiber module A, a steel rod is arranged in the fiber module A in a penetrating way, and one end of the steel rod is fixedly connected with a steel plate sheet welded and fixed at the bottom of the chassis.
Further, the novel heat insulation plate for the RH furnace lower groove is characterized in that a refractory lining arranged on the periphery of the coaming is a fiber module B, the fiber module B is tightly attached to the outer side wall of the coaming, a plurality of gaskets are arranged at intervals on the outer edge of the fiber module B, the gaskets are in abutting contact with the side surface of the fiber module B, and the gaskets are welded and fixed with the coaming through steel bars.
Further, the novel heat insulation plate for the lower groove of the RH furnace is characterized in that a fireproof lining arranged on the upper part of the chassis is made of fiber compressible materials, a steel piece which is outwards opened in a V shape is arranged in the fiber compressible materials in a penetrating mode, and the other end of the steel piece is welded and fixed on the upper part of the chassis.
Further, a novel heat insulation plate is used for the lower groove of the RH furnace, and a center fixing plate is arranged between the two avoidance cylinders along the positions of the first sub-disc body and the second sub-disc body.
Further, a novel heat insulation plate is used for the groove at the lower part of the RH furnace, and an edge fixing plate is arranged between the outer edges of the first sub-tray body and the second sub-tray body and the coaming.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the novel heat insulation plate for the lower groove of the RH furnace, the castable at the lower part of the heat insulation plate is replaced by the fiber module, the castable at the upper part of the heat insulation plate is replaced by the fiber compressible material, the heat insulation effect of the two materials is good, and the metal parts of the heat insulation plate are well ensured not to be burnt out, so that the service life of the heat insulation plate is effectively prolonged;
2. according to the novel heat insulation plate for the lower groove of the RH furnace, due to the fact that the fiber module is large in size, the fiber compressible material is small in self attribute, the material body is compact, too many anchoring pieces are not needed for fixation, the time that castable needs to be baked is avoided, meanwhile, due to the fact that the number of the anchoring pieces is small, the manufacturing period of the heat insulation plate is greatly shortened;
3. according to the novel heat insulation plate for the RH lower tank, the heat conductivity coefficient of the fiber module and the fiber compressible material is small, the heat insulation effect is good, and the steel shell of the RH lower tank bottom can be well ensured not to deform.
Drawings
FIG. 1 is a schematic cross-sectional structural view of a metal member in a heat shield of the present utility model;
FIG. 2 is a schematic view of the bottom structure of the metal part of the heat shield of the present utility model;
FIG. 3 is a schematic cross-sectional view of a heat shield of the present utility model;
in the above figures: 1-lifting lugs; 2-coaming; 3-chassis; 4-avoiding the cylinder; 5-edge fixing plates; 6-a central fixing plate; 7-a connection assembly; 8-fiber compressible material; 9-fiber module B; 10-fiber module a.
Detailed Description
For a better understanding of the present utility model, the following examples are further illustrated, but are not limited to the following examples.
The utility model relates to a novel heat insulation plate for an RH furnace lower tank, which is described in detail by combining with an attached drawing 1, and comprises a metal piece and a refractory lining, wherein the metal piece is hung below the RH furnace lower tank, the metal piece comprises a first sub-plate body and a second sub-plate body which are symmetrically arranged left and right, the first sub-plate body and the second sub-plate body are connected and fixed through connecting components 7 at two sides, the first sub-plate body and the second sub-plate body form a chassis 3 which is matched with the RH furnace lower tank, a coaming 2 is arranged on the outer periphery of the chassis 3, a plurality of lifting lugs 1 are arranged on the upper part of the coaming along the circumferential direction at intervals, the metal piece is hung below the RH furnace lower tank through the lifting lugs 1, avoiding cylinders 4 with two open ends are respectively arranged at the positions corresponding to the dip pipes of the RH furnace at the two sides of the center of the chassis 3, the refractory lining is made of fiber materials respectively arranged on the lower part of the chassis 3, the periphery of the coaming 2 and the upper part of the chassis 3, the refractory lining is connected with the refractory lining through anchoring pieces, the refractory lining is made of fiber materials, the heat insulation plate is made of a pouring material, the heat insulation plate is good in replacement, the service life of the heat insulation plate is prolonged, and the service cycle is long, and the service life of the RH furnace lower tank is prolonged.
As an alternative design, preferably, the novel heat insulation plate for the lower tank of the RH furnace is used, the fireproof lining arranged at the lower part of the chassis 3 is a fiber module A10, a steel rod is arranged in the fiber module A10 in a penetrating way, one end of the steel rod is fixedly connected with a steel plate welded at the bottom of the chassis 3, the fiber module A10 is propped against the chassis 3, then the steel rod passes through holes in the fiber module A10 and the steel plate to fix the fiber module A, each welding is used for fixing an anchor assembly A consisting of the steel rod and the steel plate welded at the bottom of the chassis 3, two adjacent fiber modules A10 are fixed, the adjacent fiber modules A10 are compacted by hammer, and the fiber modules A10 are fixed at the lower part of the chassis 3 through the anchor assemblies A and are opposite to molten steel.
As an alternative design, preferably the novel heat insulating plate for the RH furnace lower tank is used, the refractory lining arranged at the periphery of the coaming 2 is a fiber module B9, the fiber module B9 is tightly attached to the outer side wall of the coaming 2, a plurality of gaskets are arranged at intervals at the outer edge of the fiber module B9 and are in tight contact with the side surface of the fiber module B9, the gaskets are welded and fixed with the coaming 2 through steel bars, an anchoring component B consisting of the gaskets and the steel bars is welded and fixed on the side wall of the coaming firstly, then one end of each steel bar is welded and fixed on the side wall of the coaming, the fiber module B is tightly attached to the side wall of the coaming, the top of the gaskets is firmly welded, 3-5 anchoring components B can be arranged on each fiber module B, and the fiber module B is fixed on the coaming for a circle through the anchoring components B.
As an alternative design, the novel heat insulation plate for the lower tank of the RH furnace is preferable, the refractory lining arranged on the upper part of the chassis 3 is made of fiber compressible material 8, steel pieces which are outwards opened in a V shape are penetrated in the fiber compressible material 8, the other ends of the steel pieces are welded and fixed on the upper part of the chassis 3, and the fiber compressible material is fixed on the upper part of the chassis 3 through the steel pieces and is opposite to the steel shell of the bottom of the lower tank furnace.
As an alternative design, it is preferable that the novel heat insulation plate for the lower tank of the RH furnace is provided with a central fixing plate 6 between the two avoiding cylinders 4 along the positions of the first sub-tray body and the second sub-tray body, and the central fixing plate 6 is provided to strengthen the strength of the connection between the first sub-tray body and the second sub-tray body.
As an alternative design, preferably, the novel heat insulation plate for the lower groove of the RH furnace is arranged between the outer edges of the first sub-disc body and the second sub-disc body and the coaming plate 2, and the edge fixing plate 5 is arranged to strengthen the connection strength between the first sub-disc body and the second sub-disc body.
The working process of the utility model is as follows:
the utility model relates to a novel heat insulation plate for a lower groove of an RH furnace, which comprises the following steps that firstly, a first sub-plate body and a second sub-plate body are fixedly connected through connecting assemblies 7 at two sides, the first sub-plate body and the second sub-plate body are in butt joint to form a chassis 3 matched with the lower groove of the RH furnace, a coaming 2 is arranged on the outer periphery of the chassis 3, and a metal piece is hung below the lower groove of the RH furnace through a lifting lug 1;
secondly, the fiber modules A10 are propped against the chassis 3, every two adjacent fiber modules A10 are fixed by welding one anchoring assembly A, the adjacent fiber modules A10 are compacted by hammering, and the fiber modules A10 are fixed at the lower part of the chassis 3 through the anchoring assemblies A and are opposite to molten steel; then welding an anchor assembly B, welding and fixing a gasket with the coaming 2 through a steel rod, welding and fixing one end of the steel rod on the side wall of the coaming, tightly attaching a fiber module B to the side wall of the coaming, firmly welding the fiber module B on the top of the gasket, and fixing the fiber module B on the coaming through the anchor assembly B; finally, fixing the fiber compressible material on the upper part of the chassis 3 through a V-shaped steel piece, and facing the steel shell of the bottom of the lower tank furnace;
because the fiber module size is bigger, the self attribute of the fiber compressible material, the two materials are compact and small, the fixation does not need too many anchoring pieces, the time that the castable needs to be baked is avoided, meanwhile, because the quantity of the anchoring pieces is small, the manufacturing period of the heat insulation board is greatly shortened, and because the heat conductivity coefficient of the fiber module and the fiber compressible material is small, the heat insulation effect is good, and the steel shell of the bottom of the RH lower tank furnace is well ensured not to be deformed.
The above description is only an application embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto, and the scope of the claims should not be limited thereto, and any equivalent changes according to the technical solution of the present utility model should be covered in the protection scope of the present utility model.
Claims (6)
1. A novel heat insulation plate for a lower groove of an RH furnace is characterized in that: the metal piece is hung below a lower groove of the RH furnace, the metal piece comprises a first sub-disc body and a second sub-disc body which are symmetrically arranged left and right, the first sub-disc body and the second sub-disc body are connected and fixed through a connecting component, the first sub-disc body and the second sub-disc body form a chassis which is matched with the lower groove of the RH furnace, a coaming is arranged on the outer periphery of the chassis in a surrounding mode, two open-ended avoidance cylinders are respectively arranged at two sides of the center of the chassis and correspond to the dip pipe of the RH furnace, and refractory liners are respectively arranged on the lower portion of the chassis, the periphery of the coaming and the upper portion of the chassis, the refractory liners are made of fiber materials and are connected with the metal piece through anchoring pieces.
2. The novel heat insulation plate for the lower tank of the RH furnace according to claim 1, wherein the heat insulation plate is characterized in that: the fireproof lining arranged at the lower part of the chassis is a fiber module A, a steel rod is arranged in the fiber module A in a penetrating way, and one end of the steel rod is fixedly connected with a steel plate sheet welded and fixed at the bottom of the chassis.
3. The novel heat insulation plate for the lower tank of the RH furnace according to claim 1, wherein the heat insulation plate is characterized in that: the fireproof lining arranged on the periphery of the coaming is a fiber module B, the fiber module B is tightly attached to the outer side wall of the coaming, a plurality of gaskets are arranged at intervals on the outer edge of the fiber module B, the gaskets are in abutting contact with the side face of the fiber module B, and the gaskets are welded and fixed with the coaming through steel bars.
4. The novel heat insulation plate for the lower tank of the RH furnace according to claim 1, wherein the heat insulation plate is characterized in that: the fireproof lining arranged on the upper part of the chassis is made of fiber compressible materials, steel pieces which are outwards opened in a V shape are penetrated in the fiber compressible materials, and the other ends of the steel pieces are welded and fixed on the upper part of the chassis.
5. The novel heat insulation plate for the lower tank of the RH furnace according to claim 1, wherein the heat insulation plate is characterized in that: a central fixing plate is arranged between the two avoidance cylinders along the positions of the first sub-disc body and the second sub-disc body.
6. The novel heat insulation plate for the lower tank of the RH furnace according to claim 1, wherein the heat insulation plate is characterized in that: an edge fixing plate is arranged between the outer edges of the first sub disc body and the second sub disc body and the coaming plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320800488.0U CN219861435U (en) | 2023-04-12 | 2023-04-12 | Novel heat insulation plate for lower groove of RH furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320800488.0U CN219861435U (en) | 2023-04-12 | 2023-04-12 | Novel heat insulation plate for lower groove of RH furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219861435U true CN219861435U (en) | 2023-10-20 |
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ID=88335555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320800488.0U Active CN219861435U (en) | 2023-04-12 | 2023-04-12 | Novel heat insulation plate for lower groove of RH furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219861435U (en) |
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2023
- 2023-04-12 CN CN202320800488.0U patent/CN219861435U/en active Active
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