CN219385186U - Reinforcing structure for bottom of blast furnace - Google Patents
Reinforcing structure for bottom of blast furnace Download PDFInfo
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- CN219385186U CN219385186U CN202223219811.XU CN202223219811U CN219385186U CN 219385186 U CN219385186 U CN 219385186U CN 202223219811 U CN202223219811 U CN 202223219811U CN 219385186 U CN219385186 U CN 219385186U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The utility model provides a blast furnace bottom reinforcing structure, which comprises a blast furnace shell fixed on a concrete foundation, wherein at least three foundation bolt holes distributed around the blast furnace shell are formed in the concrete foundation, and fastening bolts are implanted in each foundation bolt hole; and a blast furnace shell fastening mechanism is fixedly connected to the side wall of the blast furnace shell, and the top of each fastening bolt is locked and fixed with the blast furnace shell fastening mechanism through a nut. The reinforcing structure of the blast furnace bottom can solve the problem that the existing method for plugging the bottom of the blast furnace cannot fundamentally solve the problem that the furnace shell of the blast furnace is upwarp and gas leakage is possibly generated again in subsequent production.
Description
Technical Field
The utility model relates to the technical field of iron-making blast furnaces, in particular to a furnace bottom reinforcing structure of a blast furnace.
Background
In recent years, along with the increase of the service life of a first-generation blast furnace, the enrichment and corrosion of harmful elements in the furnace can cause main reactions of two aspects of a blast furnace body: firstly, the refractory material expands due to the erosion volume of harmful elements, so that larger stress can be generated in the blast furnace, and the blast furnace shell can be possibly driven to rise; secondly, the castable between part of the cooling wall and the blast furnace shell forms a channel under the flushing of blast furnace gas, so that the temperature of the blast furnace shell is uneven, and the phenomenon that a furnace bottom plate is tilted upwards or the furnace shell and the furnace bottom plate are partially welded occurs at part of the position. These problems can cause the gas in the furnace to leak outwards from the slit torn at the bottom of the furnace, and have serious production safety hidden trouble and must be tightly plugged as soon as possible.
Some plugging methods existing in China mostly adopt: the method is characterized in that the problems of furnace bottom grouting, castable blocking, reconnection piece welding and the like, which are only temporary blocking places for leaking gas, can not be fundamentally solved, and the method can also generate gas leakage again in subsequent production.
Based on the above technical problems, a structure capable of blocking the leaked gas for a long time is needed.
Disclosure of Invention
In view of the above problems, the present utility model aims to provide a reinforcing structure for a bottom of a blast furnace, so as to solve the problem that the existing method for plugging the bottom of the blast furnace cannot fundamentally solve the problem that the furnace shell of the blast furnace is tilted up, and gas leakage is possibly generated again in subsequent production.
The blast furnace bottom reinforcing structure comprises a blast furnace shell fixed on a concrete foundation, wherein at least three foundation bolt holes distributed around the blast furnace shell are formed in the concrete foundation, and fastening bolts are implanted in the foundation bolt holes; and, in addition, the processing unit,
the side wall of the blast furnace shell is fixedly connected with a blast furnace shell fastening mechanism, and the top of each fastening bolt is locked and fixed with the blast furnace shell fastening mechanism through a nut.
In addition, the bottom of the blast furnace shell is provided with a bottom plate embedded part extending outwards, the bottom plate embedded part is connected with a vertical baffle plate surrounding the blast furnace shell, and a first pouring material is filled between the vertical baffle plate and the side wall of the blast furnace shell.
In addition, the preferred structure is, blast furnace shell fastening mechanism includes first horizontal backup pad and second horizontal backup pad, first horizontal backup pad with second horizontal backup pad passes through first vertical support plate fixed connection, first horizontal backup pad with blast furnace shell's lateral wall fixed connection, second horizontal backup pad with vertical baffle fixed connection, second horizontal backup pad with fastening bolt's top passes through nut fixed connection.
In addition, the second transverse support plate is preferably also fixedly connected to the sealing plate via a second vertical support plate.
Further, it is preferable that a first grouting hole is formed between the second lateral support plate and the side wall of the blast furnace shell, and the first casting material is filled between the vertical baffle plate and the side wall of the blast furnace shell through the first grouting hole.
In addition, the concrete foundation is preferably provided with an annular groove between the foundation bolt hole and the blast furnace shell; and, in addition, the processing unit,
the concrete foundation is provided with a sealing plate covering the foundation bolt holes, the sealing plate is provided with a lower extending part, the lower extending part extends to the bottom of the annular groove, and the bottom of the annular groove is filled with a second casting material covering the lower end of the lower extending part.
In addition, it is preferable that the gaps formed among the bottom plate embedded part, the blast furnace shell, the concrete foundation and the sealing plate are internally filled with carbon cement.
In addition, preferably, a second grouting hole is formed between the sealing plate and the bottom plate embedded part, and the carbon cement is filled into a gap formed among the bottom plate embedded part, the blast furnace shell, the concrete foundation and the sealing plate through the second grouting hole.
In addition, it is preferable that a secondary grouting material is provided on the concrete foundation to fill the foundation bolt hole and cover the sealing plate, the second grouting hole, and the floor embedded part.
In addition, the preferable structure is that the foundation bolt holes are distributed at 18 degrees with the center of the blast furnace shell as the center of the circle on the concrete basis; and, in addition, the processing unit,
each foundation bolt hole is 400mm away from the blast furnace shell.
Compared with the prior art, the blast furnace bottom reinforcing structure has the following beneficial effects:
the reinforcing structure of the blast furnace bottom of the utility model firstly uses carbon cement to temporarily block the gap which is already present; after the experience of upwarp of the prior furnace shell is absorbed, the force point at the lower part of the furnace shell is not welded with the bottom plate by the furnace shell, but a method for fastening and connecting the furnace shell with a concrete foundation of the blast furnace in a mode of matching the anchor bolt holes with fastening bolts is found, so that the problem of upwarp of the furnace shell and the bottom plate of the blast furnace can be effectively solved, and finally grouting material is pressed in to seal the furnace shell and the bottom plate.
Drawings
Other objects and results of the present utility model will become more apparent and readily appreciated by reference to the following description and claims in conjunction with the accompanying drawings and a more complete understanding of the utility model.
In the drawings:
FIG. 1 is a partial sectional elevation view of a reinforcing structure for a bottom of a blast furnace provided by the present utility model, in a bottom angular position of a furnace shell;
reference numerals: the device comprises a sealing plate 1, a fastening bolt 2, a blast furnace shell fastening mechanism 3, a blast furnace shell 4, a first grouting hole 5, a first casting material 6, a bottom plate embedded part 7, carbon cement 8, a second grouting hole 9, a second casting material 10, a vertical baffle 11, a secondary grouting material 12, a lower extension part 13, a foundation bolt hole 14 and a concrete foundation 15.
The same reference numerals will be used throughout the drawings to refer to similar or corresponding features or functions.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.
Fig. 1 shows a partial front view cross-section structure of a furnace bottom reinforcing structure of a blast furnace provided by the present utility model at a bottom angle position of a furnace shell, and as can be seen from fig. 1, the furnace bottom reinforcing structure of the present utility model comprises a blast furnace shell 4 fixed on a concrete foundation 15, in order to prevent the blast furnace shell 4 from moving upwards, a plurality of (at least three, three anchor bolt holes 14 are provided to form a triangle-shaped stable structure) anchor bolt holes 14 distributed around the blast furnace shell 4 are provided on the concrete foundation 15, and a fastening bolt 2 is implanted in each anchor bolt hole 14; the blast furnace shell fastening mechanism 3 is fixedly connected to the side wall of the blast furnace shell 4, and the top of each fastening bolt 2 is fixedly locked with the blast furnace shell fastening mechanism 3 through a nut. By this arrangement, the furnace shell and the blast furnace concrete foundation 15 can be fastened and connected, so that the problem that the furnace shell 4 and the furnace bottom plate of the blast furnace are tilted up can be effectively solved.
Specifically, in a normal case, there is a bottom plate embedded part 7 extending outwards, with a fixed bottom of a rain furnace, around the bottom of the blast furnace shell 4, in order to achieve that the bottom plate embedded part 7 and the blast furnace shell 4 generate a gap, a vertical baffle 11 (the vertical baffle 11 may be integrally formed with the bottom plate embedded part 7 and used as a part of the bottom plate embedded part 7) disposed around the blast furnace shell 4 may be connected to the bottom plate embedded part 7, a first casting material 6 is filled between the vertical baffle 11 and a side wall of the blast furnace shell 4, and the connection stability between the bottom plate embedded part 7 and the blast furnace shell 4 is enhanced by filling the first casting material 6, so that the gap between the blast furnace shell 4 and the bottom plate embedded part 7 can be effectively prevented.
In a specific embodiment of the utility model, in order to achieve a stable connection between the blast furnace shell fastening means 3 and the components, the blast furnace shell fastening means 3 may comprise a first lateral support plate and a second lateral support plate, the first lateral support plate being fixedly connected (preferably welded) to the second lateral support plate by a first vertical support plate, the first lateral support plate being fixedly connected (preferably welded) to the side wall of the blast furnace shell 4, the second lateral support plate being fixedly connected (preferably welded) to the vertical baffle 11, the second lateral support plate being fixedly connected to the top of the fastening bolt 2 by a nut lock, the second lateral support plate being also fixedly connected to the sealing plate 1 by a second vertical support plate.
More specifically, to implement pouring of the first pouring material 6, a first grouting hole 5 may be formed between the second lateral support plate and the side wall of the blast furnace shell 4, and the first pouring material 6 may be directly filled into the gap between the vertical baffle 11 and the side wall of the blast furnace shell 4 through the first grouting hole 5.
In a preferred embodiment of the present utility model, in order to achieve further fixation of the bottom of the blast furnace shell 4, an annular groove between the anchor bolt holes 14 and the blast furnace shell 4 may be opened on the concrete foundation 15; the concrete foundation 15 is provided with a sealing plate 1 covering the anchor bolt holes 14, the sealing plate 1 is provided with a lower extension 13, the lower extension 13 extends to the bottom of the annular groove, and the bottom of the annular groove is filled with a second casting 10 covering the lower end of the lower extension 13. And, the carbon cement 8 is filled in the gaps formed among the bottom plate embedded part 7, the blast furnace shell 4, the concrete foundation 15 and the sealing plate 1, and the connection stability of the bottom of the blast furnace shell 4 is further improved through the carbon cement 8.
Specifically, in order to realize the injection of the carbon cement 8, a second grouting hole 9 can be formed between the sealing plate 1 and the bottom plate embedded part 7, and the carbon cement 8 can be injected into a gap formed among the bottom plate embedded part 7, the blast furnace shell 4, the concrete foundation 15 and the sealing plate 1 through the second grouting hole 9.
In addition, in order to ensure the connection stability of the whole blast furnace bottom reinforcing structure, the concrete foundation 15 needs to be provided with a secondary grouting material 12 for filling the foundation bolt holes 14 and covering the sealing plate 1, the second grouting holes and the bottom plate embedded part 7, and all the gaps or openings which are not plugged are filled and sealed by the secondary grouting material 12.
In addition, in the actual manufacturing process, the number and the positions of the foundation bolt holes 14 can be adjusted as required, for example, the foundation bolt holes 14 can be arranged on the concrete foundation 15 at intervals of 18 degrees with the center of the blast furnace shell 4 as the center of the circle; also, each of the anchor bolt holes 14 may be spaced from the blast furnace shell 4400mm.
In order to further explain the working principle of the blast furnace bottom reinforcing structure provided by the utility model, the construction method of the blast furnace bottom reinforcing structure provided by the utility model is described in detail below.
1. And (3) taking the center of the blast furnace shell as the center of the circle, spacing 18 degrees, drilling foundation bolt holes (such as the positions where the original blast furnace foundation drawing avoids the steel bars of the original foundation) at a distance of about 400mm from the blast furnace shell, and cleaning the foundation bolt holes.
2. And checking the welding seam condition of the existing blast furnace shell and the bottom plate embedded part, and if the welding seam is cleaned up. The preparation is made for the effective sealing of the weld joint by using the first casting material (resin) in the later period.
3. Checking whether the bottom plate embedded part has deformation or tilting places or not, cleaning gaps, and preparing for pressing carbon cement into the bottom plate embedded part tilting gaps in the later stage.
4. The position of the sealing plate is provided with an annular groove with the width of 80 and the depth of 80, the annular groove is cleaned, the lower extension part of the lower part of the sealing plate is buried in the annular groove, casting materials with the depth of 20-30mm are cast in the annular groove, and the fixation of the lower extension part is realized, so that the position of sealing inaccuracy of the tilting gap of the bottom plate embedded part by carbon paste pressed in later is prevented.
5. After the first casting material and the second casting material are solidified, the carbon paste is pressed in from the second pouring hole above the sealing plate, so that all tilting gaps of the embedded parts of the plugging base plate can be sealed basically and effectively.
6. And (5) implanting fastening bolts into the foundation bolt holes, and filling with secondary grouting materials.
7. And welding the machined and manufactured blast furnace shell fastening mechanism with the blast furnace shell, the embedded part at the bottom of the blast furnace and the sealing plate.
8. The casting material (resin) is pressed in from the first grouting hole above the second transverse supporting plate of the blast furnace shell fastening mechanism. The gap between the blast furnace shell and the bottom plate embedded part for open welding is effectively blocked.
9. And after the secondary grouting material and the casting material are cured, fastening the fastening bolt and the second transverse supporting plate of the blast furnace shell fastening mechanism through nuts.
The reinforcing structure for the bottom of a blast furnace according to the present utility model is described above by way of example with reference to fig. 1. However, it will be appreciated by those skilled in the art that various modifications may be made to the blast furnace hearth-reinforcing structure set forth in the foregoing utility model without departing from the spirit of the utility model. Accordingly, the scope of the utility model should be determined from the following claims.
Claims (10)
1. The blast furnace bottom reinforcing structure is characterized by comprising a blast furnace shell fixed on a concrete foundation, wherein the concrete foundation is provided with at least three foundation bolt holes distributed around the blast furnace shell, and fastening bolts are implanted in each foundation bolt hole; and, in addition, the processing unit,
the side wall of the blast furnace shell is fixedly connected with a blast furnace shell fastening mechanism, and the top of each fastening bolt is locked and fixed with the blast furnace shell fastening mechanism through a nut.
2. The blast furnace bottom reinforcing structure according to claim 1, wherein,
the bottom of the blast furnace shell is provided with a bottom plate embedded part extending outwards, the bottom plate embedded part is connected with a vertical baffle plate arranged around the blast furnace shell, and a first pouring material is filled between the vertical baffle plate and the side wall of the blast furnace shell.
3. The blast furnace bottom reinforcing structure according to claim 2, wherein,
the blast furnace shell fastening mechanism comprises a first transverse supporting plate and a second transverse supporting plate, wherein the first transverse supporting plate is fixedly connected with the second transverse supporting plate through a first vertical supporting plate, the first transverse supporting plate is fixedly connected with the side wall of the blast furnace shell, the second transverse supporting plate is fixedly connected with the vertical baffle, and the second transverse supporting plate is fixedly connected with the top of the fastening bolt through a nut.
4. The blast furnace bottom reinforcing structure according to claim 3, wherein,
the second transverse supporting plate is fixedly connected with the sealing plate through a second vertical supporting plate.
5. The blast furnace bottom reinforcing structure according to claim 4, wherein,
a first grouting hole is formed between the second transverse supporting plate and the side wall of the blast furnace shell, and the first casting material is filled between the vertical baffle plate and the side wall of the blast furnace shell through the first grouting hole.
6. The blast furnace bottom reinforcing structure according to claim 5, wherein,
an annular groove between the foundation bolt hole and the blast furnace shell is formed in the concrete foundation; and, in addition, the processing unit,
the concrete foundation is provided with a sealing plate covering the foundation bolt holes, the sealing plate is provided with a lower extending part, the lower extending part extends to the bottom of the annular groove, and the bottom of the annular groove is filled with a second casting material covering the lower end of the lower extending part.
7. The blast furnace bottom reinforcing structure according to claim 6, wherein,
and carbon cement is filled in gaps formed among the bottom plate embedded part, the blast furnace shell, the concrete foundation and the sealing plate.
8. The blast furnace bottom reinforcing structure according to claim 7, wherein,
and a second grouting hole is formed between the sealing plate and the bottom plate embedded part, and the carbon cement is filled into a gap formed among the bottom plate embedded part, the blast furnace shell, the concrete foundation and the sealing plate through the second grouting hole.
9. The blast furnace bottom reinforcing structure according to claim 8, wherein,
and the concrete foundation is provided with secondary grouting materials for filling the foundation bolt holes, covering the sealing plate, the second grouting holes and the bottom plate embedded parts.
10. The blast furnace bottom reinforcing structure according to any one of claims 1 to 9, wherein,
the foundation bolt holes are distributed at 18-degree intervals by taking the center of a blast furnace shell as the center of a circle on the concrete basis; and, in addition, the processing unit,
each foundation bolt hole is 400mm away from the blast furnace shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223219811.XU CN219385186U (en) | 2022-11-30 | 2022-11-30 | Reinforcing structure for bottom of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223219811.XU CN219385186U (en) | 2022-11-30 | 2022-11-30 | Reinforcing structure for bottom of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219385186U true CN219385186U (en) | 2023-07-21 |
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ID=87186752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223219811.XU Active CN219385186U (en) | 2022-11-30 | 2022-11-30 | Reinforcing structure for bottom of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219385186U (en) |
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2022
- 2022-11-30 CN CN202223219811.XU patent/CN219385186U/en active Active
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