CN213628857U - Refining furnace opening sealing structure - Google Patents
Refining furnace opening sealing structure Download PDFInfo
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- CN213628857U CN213628857U CN202022725555.6U CN202022725555U CN213628857U CN 213628857 U CN213628857 U CN 213628857U CN 202022725555 U CN202022725555 U CN 202022725555U CN 213628857 U CN213628857 U CN 213628857U
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- door body
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Abstract
The utility model provides a refining furnace opening sealing structure, which comprises an inert gas pipeline for introducing inert gas, wherein an opening is arranged on a furnace body, the inert gas pipeline is arranged around the opening, and a plurality of gas outlets are uniformly arranged on the inert gas pipeline; and after the inert gas is introduced into the inert gas pipeline, the inert gas is discharged from the gas outlet hole to form a gas curtain to isolate the air outside the furnace body from entering from the opening. Because the inert gas pipelines are distributed in the openings in the scheme, when the inert gas is introduced into the inert gas pipelines, the inert gas forms a gas curtain to seal the openings, and the influence of external air entering the furnace from the openings on the quality of molten steel is avoided.
Description
Technical Field
The utility model belongs to the field of ferrous metallurgy refining equipment, in particular to a refining furnace opening sealing structure.
Background
A ladle refining furnace is a widely used molten steel refining device. In the refining process of the ladle refining furnace, the material (lime, alloy and the like) is generally added into the ladle. In order to facilitate process control, temperature measurement, sampling, part of auxiliary materials supplement and the like are needed through the openings, and furnace doors are covered on some openings to avoid splashing of molten steel in the furnace. The original furnace door is designed by a water-cooling seamless steel pipe and is provided with a hydraulic device switch. In the later use stage of the furnace cover, due to the influence of high temperature, dust and the like, the fault of a furnace door switch is frequently generated, and the maintenance is difficult. In addition, in production, the furnace door or other openings (such as electrode holes and the like) on the furnace are not required to be in a normally open state, and outside air enters the furnace to react with molten steel, so that the quality control of the molten steel is not facilitated.
SUMMERY OF THE UTILITY MODEL
In view of the above shortcomings of the prior art, an object of the present invention is to provide a refining furnace opening sealing structure for solving the problem that the opening on the furnace body is often opened to easily affect the quality of molten steel in the prior art.
In order to achieve the above objects and other related objects, the present invention provides an opening sealing structure of a refining furnace, which comprises an inert gas pipeline for introducing inert gas, wherein an opening is formed on a furnace body, the inert gas pipeline is arranged around the opening, and a plurality of gas outlets are uniformly formed on the inert gas pipeline; and after the inert gas is introduced into the inert gas pipeline, the inert gas is discharged from the gas outlet hole to form a gas curtain to isolate the air outside the furnace body from entering from the opening.
Furthermore, the furnace door body is used for blocking the opening and is rotatably connected with the furnace body.
Furthermore, the opening is "protruding" font, promptly the opening includes tip and main aspects, the tip is located the furnace body inboard, the main aspects is located the furnace body outside.
Further, the furnace door body is positioned in the large end of the opening and covers the small end of the opening, and the inert gas pipeline is positioned between the large end of the opening and the furnace door body and arranged along the inner wall of the large end of the opening.
Furthermore, a middle door opening is formed in the furnace door body, the furnace door body is connected with a middle door body in a rotating mode, and the middle door body covers the middle door opening.
Further, an argon pipeline for stirring in the furnace is arranged in the furnace body, and the inert gas pipeline is communicated with the argon pipeline.
Further, the air outlet hole formed in the inert gas pipeline is formed towards the furnace door body.
Furthermore, a first connecting portion is fixed on the furnace door body, a second connecting portion is fixed on the furnace body, and the first connecting portion and the second connecting portion are rotatably connected through a rotating shaft.
Furthermore, a fire-resistant layer is arranged on the furnace door body in a covering mode, faces the inner portion of the furnace body, and is arranged on the furnace door body in a protruding mode and located in the small end of the opening.
Furthermore, the furnace door body is fixed with a nail claw, and the furnace door body and the fire-resistant layer are fixed through the nail claw.
As mentioned above, the utility model discloses a refining furnace opening seal structure has following beneficial effect:
because the inert gas pipelines are distributed in the openings in the scheme, when the inert gas is introduced into the inert gas pipelines, the inert gas forms a gas curtain to seal the openings, and the influence of external air entering the furnace from the openings on the quality of molten steel is avoided.
Drawings
FIG. 1 is a schematic structural view of a sealing structure of an opening of a refining furnace in an embodiment of the present invention.
Fig. 2 is a schematic sectional view at a-a in fig. 1.
Fig. 3 is a schematic sectional view at B-B in fig. 1.
Detailed Description
Reference numerals in the drawings of the specification include: the furnace comprises a furnace body 1, a large end 2, an inert gas pipeline 3, a middle door opening 4, a middle door body 5, a handle 6, a furnace door body 7, a first connecting part 8, a second connecting part 9, a rotating shaft 10, nail claws 11, a fireproof layer 12 and a small end 13.
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Examples
As shown in fig. 1 to 3, the present embodiment provides a sealing structure of a refining furnace opening, comprising: a furnace door body 7 and an inert gas pipeline 3. The furnace door body 7 is rotatably connected with the furnace body 1, an opening for feeding is formed in the furnace body 1, the opening comprises a small end 13 and a large end 2, the small end 13 of the opening is overlapped with the large end 2 of the opening, and the large end 2 of the opening is provided with the small end 13 with the size larger than that of the opening; the small end 13 of the opening is positioned at one side in the refining furnace, and the large end 2 of the opening is positioned at the other side outside the refining furnace. The oven door body 7 is located within the open large end 2 and covers the open small end 13. A first connecting part 8 is arranged on one side of the furnace door body 7, a second connecting part 9 is arranged on the furnace body 1, and the first connecting part 8 and the second connecting part 9 are rotatably connected through a rotating shaft 10, so that the furnace door body 7 and the furnace body 1 are rotatably connected. The oven door body 7 is provided with a handle 6 which is convenient for opening the oven door body 7.
The middle part of the furnace door body 7 is provided with a middle door opening 4, the furnace door body 7 is rotatably connected with a middle door body 5, and the middle door body 5 covers the middle door opening 4. The connection relation between the middle door body 5 and the furnace door body 7 is consistent with the connection relation between the furnace door body 7 and the furnace body 1, so that the middle door body 5 or the furnace door body 7 is convenient to replace when deformed.
An inert gas pipeline 3 is arranged in the open big end 2 and surrounds the furnace door body 7, a plurality of air outlets are arranged on the inert gas pipeline 3, and the air outlets are arranged opposite to the furnace door body 7. Inert gas is introduced into the inert gas pipeline 3. The inert gas that lets in this scheme is the argon gas, because the argon gas can not send chemical reaction with interior alloy etc. of stove, the argon gas comes out from the gas outlet and forms the argon gas air curtain, outside air gets into in the furnace body 1 from the opening when avoiding the furnace gate body 7 to open. The inlet end of the inert gas pipeline 3 is provided with a valve, and the left end of the top of the inert gas pipeline 3 is the inlet end of the inert gas in the embodiment. Argon is selected as the inert gas in the scheme, because the argon can be used in the refining furnace to stir in the furnace, and the like, therefore, an argon pipeline is arranged in the furnace body 1, the inert gas pipeline 3 arranged at the position of the furnace door body 7 does not need to be additionally introduced with other inert gases, and only the existing argon pipeline and the inert gas pipeline 3 around the furnace door body 7 need to be communicated.
The nail claw 11 is fixed on the inner side of the furnace door body 7 (namely, the side of the furnace door body 7 facing the furnace body 1), the nail claw 11 is covered with a fire-resistant layer 12, the nail claw 11 is arranged for realizing the connection of the fire-resistant layer 12 and the furnace door body 7, and the fire-resistant layer 12 is arranged for protecting the furnace door body 7. In the scheme, the middle door body 5 is not provided with the fireproof layer 12, so that the cost is reduced.
In addition, the oven door body 7 in the scheme can be in other shapes such as square, round, oval and the like. And the inert gas pipeline 3 in this scheme not only can set up around the furnace gate body 7, can also set up other openings on the furnace body 1 for let in argon gas in the inert gas pipeline 3, form the argon gas air curtain and enter into in the furnace body 1 from open opening with isolated outside air.
When the specific implementation is carried out, when the furnace door body 7 or the middle door body 5 needs to be opened, the valve on the inert gas pipeline 3 is opened, so that argon forms an argon gas curtain at the opening to isolate external air from entering the furnace door, and the influence on the quality of molten steel in the furnace due to the opening of the furnace door body 7 or the opening of the middle door body 5 is avoided.
Besides the situation observation in the furnace or the feeding by opening the furnace door body 7, the scheme can also be carried out by opening the middle door body 5. That is, if not necessary, the middle door body 5 is used for feeding and other operations without opening the door body 7, so that the deformation of the door body 7 due to frequent opening is avoided, and the possibility of the deformation of the door body 7 is reduced. Even the furnace gate body 7 leads to warping because of reasons such as high temperature, also need not to change furnace gate body 7, but can feed in raw material through opening well door body 5 earlier, when well door body 5 warp, can directly change well door body 5, because well door body 5 compares with furnace gate body 7, it is still less to consume the material, and weight is lighter, and the cost is lower, and it is lower to change well door body 5 than changing furnace gate body 7 and adding convenient and required cost. In addition, the size of the middle door opening 4 is smaller than the size of the small end 13 of the opening, so that the middle door body 5 is safer to open compared with the door body 7, and because the small end 13 of the opening is larger, molten steel is easy to splash out of the opening when the door body 7 is opened, thereby endangering personal safety.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The opening sealing structure of the refining furnace is characterized by comprising an inert gas pipeline for introducing inert gas, wherein an opening is formed in a furnace body, the inert gas pipeline is arranged around the opening, and a plurality of gas outlet holes are uniformly formed in the inert gas pipeline; and after the inert gas is introduced into the inert gas pipeline, the inert gas is discharged from the gas outlet hole to form a gas curtain to isolate the air outside the furnace body from entering from the opening.
2. The opening sealing structure of the refining furnace according to claim 1, further comprising a furnace door body for blocking the opening, wherein the furnace door body is rotatably connected with the furnace body.
3. The opening sealing structure of the refining furnace according to claim 2, wherein the opening is in a shape of a Chinese character 'tu', that is, the opening comprises a small end and a large end, the small end is positioned at the inner side of the furnace body, and the large end is positioned at the outer side of the furnace body.
4. The finer opening sealing structure of claim 3, wherein the furnace door body is located within and covering the large end of the opening and the inert gas duct is located between and along the inner wall of the large end of the opening and the furnace door body.
5. The refining furnace opening sealing structure according to claim 2, wherein a middle door opening is opened on the furnace door body, the furnace door body is rotatably connected with a middle door body, and the middle door body covers the middle door opening.
6. The opening sealing structure of the refining furnace according to claim 1, wherein an argon gas pipeline for stirring in the furnace is arranged in the furnace body, and the inert gas pipeline is communicated with the argon gas pipeline.
7. The opening sealing structure of the refining furnace according to claim 2, wherein the inert gas pipeline is provided with an air outlet hole towards the door body of the furnace door.
8. The opening sealing structure of the refining furnace according to claim 2, wherein a first connecting portion is fixed on the door body of the furnace, a second connecting portion is fixed on the furnace body, and the first connecting portion and the second connecting portion are rotatably connected through a rotating shaft.
9. The refining furnace opening sealing structure according to claim 3, wherein a fire-resistant layer is covered on a plate surface of the furnace door body facing the interior of the furnace body, and the fire-resistant layer is convexly arranged on the furnace door body and positioned in the small end of the opening.
10. The refining furnace opening sealing structure according to claim 9, wherein the door body is fixed with a nail claw, and the door body and the refractory layer are fixed by the nail claw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022725555.6U CN213628857U (en) | 2020-11-23 | 2020-11-23 | Refining furnace opening sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022725555.6U CN213628857U (en) | 2020-11-23 | 2020-11-23 | Refining furnace opening sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213628857U true CN213628857U (en) | 2021-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022725555.6U Active CN213628857U (en) | 2020-11-23 | 2020-11-23 | Refining furnace opening sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213628857U (en) |
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2020
- 2020-11-23 CN CN202022725555.6U patent/CN213628857U/en active Active
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