CN112342330A - Method for mounting blast furnace cooling wall - Google Patents
Method for mounting blast furnace cooling wall Download PDFInfo
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- CN112342330A CN112342330A CN202011163624.7A CN202011163624A CN112342330A CN 112342330 A CN112342330 A CN 112342330A CN 202011163624 A CN202011163624 A CN 202011163624A CN 112342330 A CN112342330 A CN 112342330A
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- cooling wall
- variable
- hanging scaffold
- blast furnace
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Blast Furnaces (AREA)
Abstract
The invention relates to the technical field of blast furnaces, in particular to a method for installing a cooling wall of a blast furnace, which comprises the steps of forming an installation system of the cooling wall by arranging a lifting lug, a variable-diameter circular hanging scaffold, a steel wire rope and a hoist crane, wherein the variable-diameter circular hanging scaffold is an installation operation platform of the cooling wall, after one layer of cooling wall is installed, the hoist crane enables the variable-diameter circular hanging scaffold to move upwards to install the previous layer of cooling wall, a scaffold platform is not required to be built layer by layer, the use amount of steel is reduced, the installation cost is reduced, the installation of the cooling wall is facilitated, the installation efficiency is improved, meanwhile, a cooling wall pipeline joint is pushed into an installation hole in a blast furnace shell through a hydraulic ejector, the manual pushing is not required, the labor intensity of workers is reduced, and the installation efficiency of the cooling wall is further improved.
Description
Technical Field
The invention relates to the technical field of blast furnaces, in particular to a method for installing a cooling wall of a blast furnace.
Background
At present, the installation of a blast furnace cooling wall is implemented by building a scaffold platform in a blast furnace, the scaffold platform for installing the next layer of cooling wall is built for each layer of cooling wall, and the building of the scaffold platform needs a large amount of steel and time, so that the installation cost of the blast furnace cooling wall is high, and the efficiency is low.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method for installing the blast furnace cooling wall, which has lower cost and higher efficiency.
The technical scheme adopted by the invention for solving the technical problems is as follows: the installation method for the blast furnace cooling wall comprises the following steps:
a. manufacturing a variable-diameter circular hanging scaffold, wherein the diameter of the variable-diameter circular hanging scaffold can be changed;
b. manufacturing a rotatable ejector, wherein the rotatable ejector comprises a rotating disk and a hydraulic ejector, the hydraulic ejector is horizontally arranged on the rotating disk, and the hydraulic ejector can rotate on the rotating disk;
c. the rotatable ejector is detachably arranged on the variable-diameter circular hanging scaffold;
d. at least two lifting lugs are welded on the surface of the inner side of the furnace top, and a steel wire rope penetrates through one lifting lug;
e. a hoist crane is hung on each steel wire rope, the variable-diameter circular hanging scaffold is hung on a hook of each hoist crane, and the hoist cranes can move the variable-diameter circular hanging scaffold up and down;
f. installing the cooling wall, wherein the hoisting equipment hoists one cooling wall to be installed each time, and after the cooling wall to be installed is conveyed to an installation position, the cooling wall pipeline joint is pushed into an installation hole in a blast furnace shell through a hydraulic pusher, and then the cooling wall is fastened;
moving the variable-diameter circular hanging scaffold upwards through a hoist hanging strip, wherein the diameter of the variable-diameter circular hanging scaffold is changed according to the diameter of the section of the blast furnace, the hydraulic ejector is changed according to the installation position of a cooling wall to be installed, and the cooling walls are installed layer by layer from bottom to top until all the cooling walls are installed;
g. and after the cooling wall is installed, removing the lifting lugs, the variable-diameter circular hanging scaffold, the rotatable ejector, the steel wire rope and the hoist crane.
Further, in step d, the number of the lifting lugs is 2 or 4.
Further, in the step f, the hoisting equipment is a crawler crane or a tower crane.
Furthermore, in the step f, before each layer of cooling wall is installed, the diameter-variable circular hanging scaffold is firstly reinforced by 4 fixing rods, one end of each fixing rod is connected with the blast furnace shell, and the other end of each fixing rod is connected with the diameter-variable circular hanging scaffold.
Further, in step f, a gap plate is arranged between two adjacent cooling walls.
The invention has the beneficial effects that: through setting up the lug, the circular platform sling of variable diameter, wire rope, the calabash hangs the installation system who constitutes the stave, the circular platform sling of variable diameter is the installation operation platform of stave, after accomplishing one deck stave installation, the calabash hangs and makes the circular platform sling rebound of variable diameter can carry out the installation of one deck stave, no longer need build the scaffold platform one by one, reduce the use amount of steel, the cost of installation has been reduced, also conveniently carry out the installation of stave, the efficiency of installation is improved, and simultaneously, push the stave pipe joint into the mounting hole on the blast furnace shell through hydraulic ram pusher, no longer push through the manual work, the intensity of labour of workman has been reduced, the installation effectiveness of stave has further been improved.
Drawings
FIG. 1 is a schematic view of the present invention;
the label is: the variable-diameter circular hanging scaffold comprises a variable-diameter circular hanging scaffold 1, a rotating disc 2, a hydraulic pusher 3, a steel wire rope 4, a hoist crane 5, a cooling wall 6, a blast furnace shell 7 and a fixing rod 8.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in FIG. 1, the installation method for the cooling stave of the blast furnace of the present invention comprises the steps of:
a. manufacturing a variable-diameter circular hanging scaffold 1, wherein the diameter of the variable-diameter circular hanging scaffold 1 can be changed;
b. manufacturing a rotatable ejector, wherein the rotatable ejector comprises a rotating disk 2 and a hydraulic ejector 3, the hydraulic ejector 3 is horizontally arranged on the rotating disk 2, and the hydraulic ejector 3 can rotate on the rotating disk 2;
c. the rotatable ejector is detachably arranged on the diameter-variable circular hanging scaffold 1;
d. at least two lifting lugs are welded on the surface of the inner side of the furnace top, and a steel wire rope 4 penetrates through one lifting lug;
e. a hoist crane 5 is hung on each steel wire rope 4, the variable-diameter circular hanging scaffold 1 is hung on a hook of each hoist crane 5, and the hoist crane 5 can enable the variable-diameter circular hanging scaffold 1 to move up and down;
f. the cooling wall 6 is installed, the hoisting equipment hoists one cooling wall 6 to be installed each time, after the cooling wall 6 to be installed is conveyed to an installation position, the hydraulic jacking device 3 pushes the pipeline joint of the cooling wall 6 into an installation hole in the blast furnace shell 7, and then the cooling wall 6 is fastened;
the variable-diameter circular hanging scaffold 1 is driven to move upwards through the hoist crane 5, the diameter of the variable-diameter circular hanging scaffold 1 is changed according to the diameter of the section of the blast furnace, the hydraulic ejector 3 is changed according to the installation position of a cooling wall 6 to be installed, and the cooling walls 6 are installed layer by layer from bottom to top until all the cooling walls 6 are installed;
g. after the cooling wall 6 is installed, the lifting lugs, the variable-diameter circular hanging scaffold 1, the rotatable ejector, the steel wire rope 4 and the hoist crane 5 are removed.
Because the diameter of the section of the blast furnace is variable, usually the lower end is large, the upper end is small, the variable-diameter circular hanging scaffold 1 is used as an installation operation platform of the cooling wall 6, the diameter of the variable-diameter circular hanging scaffold 1 can be changed, so that the variable-diameter circular hanging scaffold is suitable for installation of the cooling wall 6 of each layer, and furthermore, in the upward moving process of the variable-diameter circular hanging scaffold 1, the diameter of the variable-diameter circular hanging scaffold 1 can be reduced, so that the upward moving is convenient.
The section of the blast furnace is circular, one layer of cooling wall 6 is a circle of cooling wall 6, and the hydraulic ejector 3 can rotate on the rotating disk 2, so that the hydraulic ejector 3 can act on the cooling wall 6 at each position for installation.
In order to ensure the stability of the variable-diameter circular hanging scaffold 1 and reduce the possibility of shaking caused by the installation of the variable-diameter circular hanging scaffold on the cooling wall 6, in the step d, the number of the lifting lugs is 2 or 4, so that the number of the hoist hangers 5 is also 2 or 4, and the hoist hangers 5 are preferably t-hand hoist hangers, so that the variable-diameter circular hanging scaffold 1 can move up and down conveniently. Furthermore, in step f, before each layer of cooling wall 6 is installed, the variable-diameter circular hanging scaffold 1 is reinforced by 4 fixing rods 8, one end of each fixing rod 8 is connected with the blast furnace shell 7, the other end of each fixing rod is connected with the variable-diameter circular hanging scaffold 1, and the 4 fixing rods 8 are distributed around the variable-diameter circular hanging scaffold 1.
In the step f, the hoisting equipment is a crawler crane or a tower crane, and the hydraulic ejector 3 is slowly pushed into the mounting hole of the blast furnace shell 7 when pushing the pipeline joint of the cooling wall 6, so that the cooling wall 6 is prevented from being damaged. After the pipe joint of the cooling wall 6 is pushed into the mounting hole on the blast furnace shell 7 by the jacking pusher 3, a sleeve pipe is tightly installed with a nut in time, a gap plate is arranged between the transverse gap and the longitudinal gap of the two cooling walls 6, and after the gap plate is fixed, 5mm of embedded pressure round steel is cut to be flush with the inner side surface of the cooling wall. The cooling stave 6 is fastened by the steps of: the fixed node gasket of the cooling wall 6 is well welded with the blast furnace shell 7, connecting bolts of the fixed nodes must be uniformly tightened, and the backing plate, the blast furnace shell 7, the water pipe, the backing plate, the nut, the backing plate and the bolts and the nuts must be fully welded layer by layer, so that gas cannot leak.
In conclusion, the variable-diameter circular hanging scaffold 1 serves as an installation operation platform of the cooling wall 6, after the installation of one layer of cooling wall 6 is completed, the hoist crane 5 enables the variable-diameter circular hanging scaffold 1 to move upwards to install the previous layer of cooling wall 6, scaffold platforms do not need to be built layer by layer any more, the use amount of steel is reduced, the installation cost is reduced, the installation of the cooling wall 6 is facilitated, the installation efficiency is improved, meanwhile, the hydraulic furnace shell pusher 3 pushes the pipeline joint of the cooling wall 6 into the installation hole in the blast furnace, manual pushing is not needed any more, the labor intensity of workers is reduced, and the installation efficiency of the cooling wall 6 is further improved.
Claims (5)
1. The installation method for the blast furnace cooling wall is characterized by comprising the following steps: the method comprises the following steps:
a. manufacturing a variable-diameter circular hanging scaffold (1), wherein the diameter of the variable-diameter circular hanging scaffold (1) can be changed;
b. manufacturing a rotatable ejector, wherein the rotatable ejector comprises a rotating disk (2) and a hydraulic ejector (3), the hydraulic ejector (3) is horizontally arranged on the rotating disk (2), and the hydraulic ejector (3) can rotate on the rotating disk (2);
c. the rotatable ejector is detachably arranged on the variable-diameter circular hanging scaffold (1);
d. at least two lifting lugs are welded on the surface of the inner side of the furnace top, and a steel wire rope (4) penetrates through one lifting lug;
e. a hoist crane (5) is hung on each steel wire rope (4), the variable-diameter circular hanging scaffold (1) is hung on a hook of each hoist crane (5), and the hoist cranes (5) can enable the variable-diameter circular hanging scaffold (1) to move up and down;
f. the cooling wall (6) is installed, the hoisting equipment hoists one cooling wall (6) to be installed each time, after the cooling wall (6) to be installed is conveyed to an installation position, the pipeline joint of the cooling wall (6) is pushed into an installation hole in a blast furnace shell (7) through the hydraulic pusher (3), and then the cooling wall (6) is fastened;
the diameter-variable circular hanging scaffold (1) is driven to move upwards through the hoist crane (5), the diameter of the diameter-variable circular hanging scaffold (1) changes according to the diameter of the section of the blast furnace, the hydraulic ejector (3) changes according to the installation position of a cooling wall (6) to be installed, and the cooling walls (6) are installed layer by layer from bottom to top until all the cooling walls (6) are installed;
g. after the cooling wall (6) is installed, the lifting lugs, the diameter-variable circular hanging scaffold (1), the rotatable ejector, the steel wire rope (4) and the hoist crane (5) are removed.
2. The installation method for a cooling stave of a blast furnace according to claim 1, wherein: in step d, the number of the lifting lugs is 2 or 4.
3. The installation method for a cooling stave of a blast furnace according to claim 1, wherein: in step f, the hoisting equipment is a crawler crane or a tower crane.
4. The installation method for a cooling stave of a blast furnace according to claim 1, wherein: in the step f, before each layer of cooling wall (6) is installed, the variable-diameter circular hanging scaffold (1) is reinforced through 4 fixing rods (8), one end of each fixing rod (8) is connected with the blast furnace shell (7), and the other end of each fixing rod is connected with the variable-diameter circular hanging scaffold (1).
5. The installation method for a cooling stave of a blast furnace according to any one of claims 1 to 4, wherein: in step f, a gap plate is arranged between two adjacent cooling walls (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011163624.7A CN112342330A (en) | 2020-10-27 | 2020-10-27 | Method for mounting blast furnace cooling wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011163624.7A CN112342330A (en) | 2020-10-27 | 2020-10-27 | Method for mounting blast furnace cooling wall |
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| Publication Number | Publication Date |
|---|---|
| CN112342330A true CN112342330A (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011163624.7A Pending CN112342330A (en) | 2020-10-27 | 2020-10-27 | Method for mounting blast furnace cooling wall |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113549718A (en) * | 2021-07-19 | 2021-10-26 | 鞍钢建设集团有限公司 | Replacement method of blast furnace cooling wall |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509049A (en) * | 2009-03-27 | 2009-08-19 | 二十三冶建设集团有限公司 | Construction method for internal cooling wall and furnace liner of blast furnace |
| CN102212630A (en) * | 2011-05-23 | 2011-10-12 | 北京首钢建设集团有限公司 | Construction method for replacing cooling wall of blast furnace by utilizing movable hanging scaffold |
| JP2011231409A (en) * | 2011-07-11 | 2011-11-17 | Jfe Steel Corp | Structure for arranging stave in shaft furnace-type metallurgical furnace |
| CN208472129U (en) * | 2018-06-26 | 2019-02-05 | 五冶集团上海有限公司 | A kind of flexible hanging scaffold for blast furnace cooling stave replacement |
| CN111451764A (en) * | 2020-05-19 | 2020-07-28 | 中国十七冶集团有限公司 | Staggered installation method for lower furnace shell of hot blast stove and equipment in stove |
-
2020
- 2020-10-27 CN CN202011163624.7A patent/CN112342330A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509049A (en) * | 2009-03-27 | 2009-08-19 | 二十三冶建设集团有限公司 | Construction method for internal cooling wall and furnace liner of blast furnace |
| CN102212630A (en) * | 2011-05-23 | 2011-10-12 | 北京首钢建设集团有限公司 | Construction method for replacing cooling wall of blast furnace by utilizing movable hanging scaffold |
| JP2011231409A (en) * | 2011-07-11 | 2011-11-17 | Jfe Steel Corp | Structure for arranging stave in shaft furnace-type metallurgical furnace |
| CN208472129U (en) * | 2018-06-26 | 2019-02-05 | 五冶集团上海有限公司 | A kind of flexible hanging scaffold for blast furnace cooling stave replacement |
| CN111451764A (en) * | 2020-05-19 | 2020-07-28 | 中国十七冶集团有限公司 | Staggered installation method for lower furnace shell of hot blast stove and equipment in stove |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113549718A (en) * | 2021-07-19 | 2021-10-26 | 鞍钢建设集团有限公司 | Replacement method of blast furnace cooling wall |
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Application publication date: 20210209 |