CN220703732U - Furnace bottom sealing structure - Google Patents
Furnace bottom sealing structure Download PDFInfo
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- CN220703732U CN220703732U CN202322394711.9U CN202322394711U CN220703732U CN 220703732 U CN220703732 U CN 220703732U CN 202322394711 U CN202322394711 U CN 202322394711U CN 220703732 U CN220703732 U CN 220703732U
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- furnace
- furnace bottom
- sealing plate
- fixedly connected
- pier
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- 238000007789 sealing Methods 0.000 title claims abstract description 75
- 239000011449 brick Substances 0.000 claims description 19
- 239000000945 filler Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 230000009970 fire resistant effect Effects 0.000 claims description 3
- 239000002585 base Substances 0.000 abstract description 19
- 238000003723 Smelting Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 229910052783 alkali metal Inorganic materials 0.000 abstract description 6
- 150000001340 alkali metals Chemical class 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 239000011819 refractory material Substances 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 230000005465 channeling Effects 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 239000003034 coal gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Blast Furnaces (AREA)
Abstract
The utility model relates to the technical field of smelting equipment, in particular to a furnace bottom sealing structure, which comprises a furnace base; a furnace bottom annular plate is fixedly connected to the furnace base; a furnace shell is fixedly connected to the furnace bottom ring plate; the furnace base is fixedly connected with a furnace bottom lower sealing plate at a position corresponding to the inner part of the furnace bottom annular plate; a heat-resistant foundation pier is arranged at the position of the furnace shell corresponding to the upper sealing plate of the furnace bottom; the furnace bottom upper sealing plate and the furnace bottom lower sealing plate are adopted, the furnace bottom upper sealing plate and the furnace shell are flexibly and continuously welded in a sealing manner, a heat-resistant base pier is formed in the middle by filling a heat-resistant refractory material and used as a rigid support, three-layer protection is formed to greatly improve the air tightness of the furnace bottom, gas leakage is avoided, the problem that in the prior art, along with the improvement of the production smelting strength of a blast furnace, the blast furnace is increased continuously in alkali metal circulation enrichment, the furnace bottom leakage gas is easily caused, the treatment of the furnace bottom leakage gas is time-consuming and labor-consuming, the effect is not obvious, and the problem of extra-high risk operation is solved.
Description
Technical Field
The utility model relates to the technical field of smelting equipment, in particular to a furnace bottom sealing structure.
Background
The blast furnace is a smelting equipment using steel plate as furnace shell and refractory brick as lining in the shell, its structure mainly includes five portions of furnace throat, furnace body, furnace waist, furnace abdomen and furnace hearth, and its bottom layer is set up on the furnace bottom.
In long-time production of the blast furnace, the heat resistance value of the base pier refractory material is unreasonable, the welding quality is poor, the grouting holes are not blocked, the ramming material and the castable material are not prepared, the alkali load of the blast furnace is high, the blast furnace rises, the furnace shell is cracked and leaks gas, and the installation quality and the material selection in the construction process of the blast furnace can be within the control range.
However, with the improvement of the production smelting intensity of the blast furnace, the blast furnace is expanded to different degrees continuously due to the circulation enrichment of alkali metal, the gas leakage of the furnace bottom is easy to occur, the treatment of the gas leakage of the furnace bottom is time-consuming and labor-consuming, the effect is not obvious, and the problem of extra-high risk operation exists.
Disclosure of Invention
Therefore, the utility model aims to solve the technical problems that the furnace bottom gas leakage is easy to occur due to the fact that the furnace bottom gas leakage is time-consuming and labor-consuming in treatment, the effect is not obvious, and the problem of extra-high risk operation exists in the prior art because the alkali metal circulation enrichment is increased continuously along with the improvement of the production smelting intensity of the furnace.
In order to solve the technical problems, the utility model provides a furnace bottom sealing structure, which comprises a furnace base; a furnace bottom annular plate is fixedly connected to the furnace base; a furnace shell is fixedly connected to the furnace bottom ring plate; the furnace base is fixedly connected with a furnace bottom lower sealing plate at a position corresponding to the inner part of the furnace bottom annular plate; a heat-resistant foundation pier is arranged at the position of the furnace shell corresponding to the upper sealing plate of the furnace bottom; and a furnace bottom upper sealing plate is fixedly connected at the position, corresponding to the upper part of the heat-resistant foundation pier, inside the furnace shell.
In one embodiment of the utility model, a pier wall is fixedly connected in the furnace shell, and the bottom of the pier wall is positioned between the lower furnace bottom sealing plate and the furnace shell; pier caps are fixedly connected above the pier walls and are arranged between the upper furnace bottom sealing plates and the heat-resistant foundation piers.
In one embodiment of the utility model, a brick layer is arranged in the furnace shell at a position corresponding to the upper part of the upper sealing plate of the furnace bottom; a filler layer is arranged above the brick layer.
In one embodiment of the utility model, the bottom of the furnace bottom lower sealing plate is fixedly connected with a first wedge-shaped block; the furnace bottom ring plate is provided with a first chamfer at a position corresponding to the first wedge-shaped block, and the first wedge-shaped block is spliced with the first chamfer.
In one embodiment of the utility model, the bottom of the pier wall is fixedly connected with a second wedge block; the position of the furnace bottom lower sealing plate corresponding to the second wedge-shaped block is provided with a second chamfer, and the second wedge-shaped block is spliced with the second chamfer.
In one embodiment of the utility model, the furnace bottom ring plate is fixedly connected with a supporting block, and the bottom of the furnace shell is fixedly connected with the supporting block.
In one embodiment of the utility model, the heat resistant foundation pier and the filler layer are both filled with a heat and flame resistant material; the brick layer is formed by paving carbon bricks.
In one embodiment of the utility model, the filler layer is concave in shape to conform to the brick layer.
Compared with the prior art, the technical scheme of the utility model has the following advantages:
according to the furnace bottom sealing structure, under the cooperation of the furnace bottom lower sealing plate, the furnace bottom upper sealing plate and the heat-resistant foundation pier, in specific operation, the furnace bottom upper sealing plate and the furnace bottom lower sealing plate are adopted, the furnace bottom upper sealing plate and the furnace shell are flexibly and continuously sealed and welded, the heat-resistant foundation pier is filled in the middle to form a heat-resistant refractory material to serve as a rigid support, three layers of protection are formed, the air tightness of the furnace bottom is greatly improved, gas leakage is avoided, the problem that in the prior art, as the production smelting intensity of a blast furnace is improved, the alkali metal circulation enrichment is increased continuously, the blast furnace is increased to different degrees, the furnace bottom gas leakage is easy to be caused, the furnace bottom gas leakage treatment is time-consuming and labor-consuming, the effect is not obvious, and the problem of extra-high risk operation is solved.
Drawings
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings.
FIG. 1 is a perspective view of the present utility model;
FIG. 2 is a cross-sectional view of the present utility model;
FIG. 3 is a perspective view of a furnace bottom ring plate of the present utility model;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
description of the specification reference numerals: 1. a furnace base; 2. a furnace bottom ring plate; 3. a furnace shell; 4. a furnace bottom upper sealing plate; 5. a heat resistant foundation pier; 6. a furnace bottom lower sealing plate; 7. a support block; 8. a first chamfer; 9. a first wedge block; 10. a second chamfer; 11. a filler layer; 12. brick layers; 13. pier walls; 14. pier caps; 15. and a second wedge block.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.
Referring to fig. 1 to 4, a furnace bottom sealing structure of the present utility model includes a furnace base 1; a furnace bottom annular plate 2 is fixedly connected to the furnace base 1; a furnace shell 3 is fixedly connected to the furnace bottom ring plate 2; the furnace base 1 is fixedly connected with a furnace bottom lower sealing plate 6 at a position corresponding to the inner part of the furnace bottom annular plate 2; a heat-resistant foundation pier 5 is arranged at the position of the furnace shell 3 corresponding to the furnace bottom upper sealing plate 4; the furnace bottom upper sealing plate 4 is fixedly connected to the position, corresponding to the upper part of the heat-resistant foundation pier 5, inside the furnace shell 3.
When the device works, in the prior art, as the production smelting strength of the blast furnace is improved, the blast furnace is increased in different degrees due to the fact that alkali metal circulation enrichment is continuously increased, so that the gas leakage of the furnace bottom is easy to occur, the gas leakage treatment of the furnace bottom is time-consuming and labor-consuming, the effect is not obvious, and the problem of extra-high risk operation exists; in order to solve the problems, the utility model designs the furnace base 1, two layers of sealing plates of the upper furnace sealing plate 4 and the lower furnace sealing plate 6 are adopted, the upper furnace sealing plate 4 and the furnace shell 3 are flexibly and continuously sealed and welded, a heat-resistant base pier 5 is filled and formed by adopting a heat-resistant and fire-resistant material in the middle to serve as a rigid support, three layers of protection are formed, the air tightness of the furnace bottom is greatly improved, the upper furnace sealing plate 4 is the first layer of protection, furnace bottom channeling gas is stopped, if the upper furnace sealing plate 4 is destroyed in the production process, a sealed box body is formed between the upper furnace sealing plate 4 and the lower furnace sealing plate 6 and the furnace shell 3, the middle is filled and filled with the heat-resistant base pier 5 to form rigid filling, gas is blocked from entering, the second layer of protection is formed, even if gas passes through the lower sealed box body from the upper furnace sealing plate 4, then a passage cannot be formed due to the fact that alkali is gradually blocked by penetrating into a gap, the lower sealed box body is more compact, the blocking of the coal channeling gas is blocked, the coal channeling is formed, the sealing plate 6 and the lower furnace shell 3 is formed between the sealing plate is the first layer of blocking coal gas, the coal channeling gas is stopped, the air tightness is greatly improved, the leakage is avoided, the coal gas is increased, the problem of the prior art is solved, the high-quality is not wasted, the circulating gas is increased, the problem of the furnace bottom is easy to be caused, the high-quality is caused, and the problem is not to be easily caused, and the coal gas is not to be easily increased, and the circulating and has high-quality and has increased.
In one embodiment of the present utility model, referring to fig. 2, a pier wall 13 is fixedly connected in the furnace shell 3, and the bottom of the pier wall 13 is located between the bottom lower sealing plate 6 and the furnace shell 3; pier caps 14 are fixedly connected above the pier walls 13, and the pier caps 14 are arranged between the furnace bottom upper sealing plate 4 and the heat-resistant foundation pier 5.
During operation, through the setting of mound wall 13, can form pouring mould and provide the holding power of horizontal direction when filling heat-resisting foundation pier 5 to stove outer covering 3, avoid taking place to collapse when filling heat-resisting foundation pier 5, become rigid support after the heat-resisting foundation pier 5 is dry simultaneously, form supporting role with mound wall 13 cooperation, pier cap 14 then provides certain sealed and support connection effect.
In one embodiment of the utility model, referring to fig. 2, a brick layer 12 is arranged in the furnace shell 3 at a position corresponding to the upper part of the upper furnace bottom sealing plate 4; a packing layer 11 is arranged above the brick layer 12.
During operation, molten iron is always transferred to the edge of the blast furnace in the operation process of the blast furnace, and is concentrated at the edge of the blast furnace to form circulation, so that the furnace shell 3 of the furnace bottom is continuously scoured and damaged, the service life is reduced, the upper furnace bottom sealing plate 4 and the furnace shell 3 are isolated and protected to a certain extent through the arrangement of the brick layer 12 and the packing layer 11, and the service life is prolonged.
In one embodiment of the utility model, referring to fig. 3 and 4, a first wedge-shaped block 9 is fixedly connected to the bottom of the bottom lower sealing plate 6; the furnace bottom ring plate 2 is provided with a first chamfer 8 at a position corresponding to the first wedge-shaped block 9, and the first wedge-shaped block 9 is spliced with the first chamfer 8.
During operation, the furnace bottom annular plate 2 and the furnace bottom lower sealing plate 6 are sealed through the cooperation of the first wedge-shaped block 9 and the first chamfer 8, and the tightness is improved through the filling of the heat-resistant foundation pier 5.
In one embodiment of the present utility model, referring to fig. 3 and 4, the bottom of the pier wall 13 is fixedly connected with a second wedge block 15; the position of the furnace bottom lower sealing plate 6 corresponding to the second wedge-shaped block 15 is provided with a second chamfer 10, and the second wedge-shaped block 15 is spliced with the second chamfer 10.
During operation, through the cooperation of the second wedge 15 and the second chamfer 10, the stress direction of the bottom of the pier wall 13 is always inwards, so that the supporting pressure of the furnace shell 3 is reduced, and the stability of the blast furnace is improved.
In one embodiment of the present utility model, referring to fig. 2 and 4, the bottom ring plate 2 is fixedly connected with a supporting block 7, and the bottom of the furnace shell 3 is fixedly connected with the supporting block 7.
During operation, through the setting of supporting shoe 7, can form the strengthening rib with heat-resisting base pier 5 cooperation, support furnace shell 3 bottom, simultaneously at the inside water injection of supporting shoe 7 can further increase leakproofness and life.
In one embodiment of the present utility model, referring to fig. 2, the heat-resistant foundation pier 5 and the filler layer 11 are both filled with a heat-resistant refractory material; the brick layer 12 is formed by paving carbon bricks.
When the heat-resistant foundation pier 5 and the packing layer 11 which are filled with heat-resistant and fire-resistant materials are used in operation, the corrosiveness caused by molten iron in the operation process of the blast furnace can be relieved, the service life is longer, and the carbon bricks support the packing layer 11.
In one embodiment of the present utility model, referring to fig. 2, the filler layer 11 is concave to fit the brick layer 12.
When the furnace shell 3 is in operation, the concave packing layer 11 can prevent molten iron from directly impacting the furnace shell 3 under the centrifugal action, reduce the impact strength of the molten iron on the furnace shell 3 and prolong the service life.
Working principle:
the furnace bottom upper sealing plate 4 and the furnace bottom lower sealing plate 6 are adopted, the furnace bottom upper sealing plate 4 and the furnace shell 3 are flexibly and continuously sealed and welded, a heat-resistant base pier 5 is filled in the middle to form a heat-resistant base pier 5 to serve as a rigid support, three layers of protection are formed, the air tightness of the furnace bottom is greatly improved, the furnace bottom upper sealing plate 4 is a first layer of protection, furnace bottom channeling gas is stopped, if the furnace bottom upper sealing plate 4 is destroyed in the production process, a sealed box body is formed between the furnace bottom upper sealing plate 4, the furnace bottom lower sealing plate 6 and the furnace shell 3, the heat-resistant base pier 5 is filled in the middle to form rigid filling, the gas is blocked, the gas is protected to form a second layer, even if the gas passes through the furnace bottom upper sealing plate 4, a passage cannot be formed due to the lower sealed box body, then the lower sealed box body is more compact due to the alkali metal infiltration, the gas channeling is blocked, the sealing between the furnace bottom lower sealing plate 6 and the furnace shell 3 is formed into a third layer of protection for blocking the gas, the air tightness of the furnace bottom is greatly improved, and the gas leakage is avoided.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (8)
1. A furnace bottom sealing structure, which is characterized in that: comprises a furnace base (1); a furnace bottom annular plate (2) is fixedly connected to the furnace base (1); a furnace shell (3) is fixedly connected to the furnace bottom ring plate (2); a furnace bottom lower sealing plate (6) is fixedly connected to the position of the furnace base (1) corresponding to the interior of the furnace bottom annular plate (2); a heat-resistant foundation pier (5) is arranged at the position of the furnace shell (3) corresponding to the furnace bottom upper sealing plate (4); the furnace bottom upper sealing plate (4) is fixedly connected at the position, corresponding to the upper part of the heat-resistant foundation pier (5), inside the furnace shell (3).
2. The furnace bottom sealing structure according to claim 1, wherein: a pier wall (13) is fixedly connected in the furnace shell (3), and the bottom of the pier wall (13) is positioned between the furnace bottom sealing plate (6) and the furnace shell (3); pier caps (14) are fixedly connected above the pier walls (13), and the pier caps (14) are arranged between the furnace bottom upper sealing plate (4) and the heat-resistant foundation pier (5).
3. The furnace bottom sealing structure according to claim 2, wherein: a brick layer (12) is arranged in the furnace shell (3) at a position corresponding to the upper part of the furnace bottom upper sealing plate (4); a packing layer (11) is arranged above the brick layer (12).
4. A furnace bottom sealing structure according to claim 3, wherein: the bottom of the furnace bottom lower sealing plate (6) is fixedly connected with a first wedge-shaped block (9); the furnace bottom ring plate (2) is provided with a first chamfer (8) at a position corresponding to the first wedge-shaped block (9), and the first wedge-shaped block (9) is spliced with the first chamfer (8).
5. The furnace bottom sealing structure according to claim 4, wherein: the bottom of the pier wall (13) is fixedly connected with a second wedge block (15); the position of the furnace bottom lower sealing plate (6) corresponding to the second wedge-shaped block (15) is provided with a second chamfer (10), and the second wedge-shaped block (15) is spliced with the second chamfer (10).
6. The furnace bottom sealing structure according to claim 5, wherein: the furnace bottom ring plate (2) is fixedly connected with a supporting block (7), and the bottom of the furnace shell (3) is fixedly connected with the supporting block (7).
7. The furnace bottom sealing structure according to claim 6, wherein: the heat-resistant foundation pier (5) and the packing layer (11) are filled with heat-resistant and fire-resistant materials; the brick layer (12) is formed by paving carbon bricks.
8. The furnace bottom sealing structure according to claim 7, wherein: the filler layer (11) is concave and is matched with the brick layer (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322394711.9U CN220703732U (en) | 2023-09-04 | 2023-09-04 | Furnace bottom sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322394711.9U CN220703732U (en) | 2023-09-04 | 2023-09-04 | Furnace bottom sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220703732U true CN220703732U (en) | 2024-04-02 |
Family
ID=90437691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322394711.9U Active CN220703732U (en) | 2023-09-04 | 2023-09-04 | Furnace bottom sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220703732U (en) |
-
2023
- 2023-09-04 CN CN202322394711.9U patent/CN220703732U/en active Active
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