CN216237128U - Copper column reinforced cooling cast iron cooling wall - Google Patents
Copper column reinforced cooling cast iron cooling wall Download PDFInfo
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- CN216237128U CN216237128U CN202121365160.8U CN202121365160U CN216237128U CN 216237128 U CN216237128 U CN 216237128U CN 202121365160 U CN202121365160 U CN 202121365160U CN 216237128 U CN216237128 U CN 216237128U
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Abstract
The utility model discloses a copper column reinforced cooling cast iron cooling wall, which relates to the technical field of blast furnace cooling devices and comprises a cast iron cooling wall body and a plurality of cooling water pipes which are pre-arranged in the cast iron cooling wall body in parallel, wherein a plurality of copper columns are arranged in parallel along the cooling water pipes at the dovetail part of the cast iron cooling wall, one end of each copper column is connected with the cooling water pipe and is metallurgically combined with the cooling water pipe.
Description
Technical Field
The utility model relates to the technical field of blast furnace cooling devices, in particular to a copper column reinforced and cooled cast iron cooling wall.
Background
The cooling wall is important cooling equipment of a blast furnace, and currently, the cooling wall comprises a rolled copper cooling wall, a cast steel cooling wall, a grey cast iron cooling wall, a heat-resistant cast iron cooling wall and a nodular cast iron cooling wall. The grey cast iron cooling wall and the heat-resistant cast iron cooling wall are generally used for blast furnace hearth parts with relatively mild working conditions, and the nodular cast iron cooling wall and the cast steel cooling wall are generally used at the upper part of a blast furnace body. The working environment of the iron-making blast furnace slag melting zone is severe, the temperature is as high as about 2000 ℃, and the blast furnace slag melting zone needs to resist high-temperature slag iron erosion and coal gas flow scouring, so that in order to prolong the service life of the cooling wall of the zone, the cooling capacity of the cooling wall needs to be improved, namely the slag hanging capacity of the cooling wall of the zone is improved. Because the slag crust frequently falls off under the above severe working conditions, the good heat conductivity of the cooling wall is also a necessary condition for slag crust regeneration.
As mentioned above, the use of copper staves in the area of the blast furnace slag melt strip is certainly the best option. However, practice proves that the copper cooling wall also has many disadvantages, mainly including the following four points: firstly, the heat conduction of copper is too good, the comprehensive heat conduction capability is about 20-30 times of that of a nodular cast iron cooling wall, and the operation of a blast furnace is not easy to master; secondly, the copper cooling wall is too soft and is easy to be worn and lost, and particularly after the refractory materials in the dovetail groove are worn away, the copper cooling wall can be worn to a water flow channel within a short service time to cause water leakage of the cooling wall; thirdly, the strength of the copper cooling wall is not enough, and the copper cooling wall is easy to deform in use; and fourthly, the copper cooling wall is expensive, and the unit price of weight is about ten times of that of the cast iron cooling wall, so that the copper cooling wall is abandoned by some large-scale iron-making blast furnaces at home and abroad, and the traditional nodular cast iron cooling wall or cast steel cooling wall is selected instead.
As a novel cooling wall, the cast steel cooling wall has been used for 20 years, but in practical application, the cast steel cooling wall gradually exits the market due to poor comprehensive heat conduction capability, unstable performance and much early damage in a high-temperature state.
Besides the copper cooling wall and the cast steel cooling wall, when the cooling wall is applied to the blast furnace slag melting belt, only the nodular cast iron cooling wall can be selected, so that a plurality of steel enterprises still exist in China, and the nodular cast iron cooling wall is still selected at the blast furnace slag melting belt.
The disadvantages of the nodular cast iron cooling wall are also obvious:
firstly, the safe use temperature is low, pearlite in a cooling wall matrix stably exists at the temperature lower than 450 ℃, pearlite at the temperature higher than 450 ℃ is granulated and graphitized and expanded, so that the safe use temperature of the ductile iron cooling wall is generally considered to be not higher than 450 ℃;
secondly, the comprehensive heat conduction capability is poor and is only 10W/m.k. Because of the poor heat conduction capability, the ductile iron cooling wall at the slag melting zone part is difficult to stick slag and is difficult to regenerate after the slag crust falls off. After the slag crust falls off, the working temperature of the ductile iron cooling wall is often over 700 ℃, sometimes over 1000 ℃ and far higher than the safe working temperature of the ductile iron cooling wall, and obviously, the traditional ductile iron cooling wall is not suitable for the blast furnace slag melting zone.
From the above, it is obvious that the prior art has inconvenience and disadvantages in practical use, so that improvement is needed.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a cast iron cooling wall with enhanced cooling of copper columns, which is suitable for a slag melting zone of an iron-making blast furnace and is used for solving the problems of poor slag adhering capability, high temperature of a cooling wall body and short service life caused by the poor heat conducting capacity of the cooling wall in the prior art.
In order to achieve the above object, the present invention provides the following technical solutions.
A copper column enhanced cooling cast iron cooling wall comprises a cast iron cooling wall body and a plurality of cooling water pipes arranged in parallel inside the cast iron cooling wall body; the cast iron cooling wall is provided with a plurality of copper columns in parallel along the cooling water pipe, and one end of each copper column is connected with the cooling water pipe.
As an optimized scheme, dovetails are arranged on the cast iron cooling wall body in parallel, and the copper columns are correspondingly arranged on the dovetails.
As an optimized scheme, the connection mode of the copper column and the cooling water pipe is metallurgical bonding.
As an optimized scheme, a dovetail groove is formed between every two adjacent dovetails, and a refractory material layer is embedded in each dovetail groove.
As an optimized scheme, the other end of the copper column extends to the outside of the cast iron cooling wall body and is in metallurgical bonding with the cooling wall body.
As an optimized scheme, a plurality of cooling water pipes are arranged in parallel along the length direction of the cooling wall body.
As an optimized scheme, the cooling water pipe comprises a vertical pipe section arranged along the length direction of the cooling wall and a horizontal pipe section extending to the outside of the cooling wall body.
As an optimized scheme, the horizontal pipe section at the lower part is a cooling medium inlet, and the horizontal pipe section at the upper part is a cooling medium outlet.
As an optimized scheme, the cast iron cooling wall body is made of nodular cast iron.
As an optimized scheme, the cast iron cooling wall body is made of grey cast iron.
Compared with the prior art, the utility model has the beneficial effects that:
the device is arranged at the position of a slag melting belt of an iron-making blast furnace, so that the slag adhering capacity is improved, the temperature of a cooling wall body is reduced, and the service life is prolonged;
the copper bar is arranged at the dovetail part of the cooling wall, so that the heat of the heating surface of the cooling wall is transferred to the outer wall of the cooling water pipe through the copper bar by utilizing the high thermal conductivity of the copper bar, the cooling effect on the blast furnace wall is improved through the cooling medium flowing in the water pipe, and compared with the mode that the heat is transferred to the cooling water pipe only by depending on the cast iron cooling wall body in the traditional technology, the heat exchange efficiency is greatly improved;
the parts are few, and the process is simple and convenient; the structure is simple, and the service life is long; simple and convenient operation and control, easy large-scale manufacture and installation and wide application range.
Drawings
In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the utility model or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic side view of the present invention;
in the figure: 1-a cooling water pipe; 2-cast iron stave body; 3-dovetail; 4-copper columns; 5-refractory material.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1 and 2, the cast iron stave with copper cylinder enhanced cooling comprises a cast iron stave body 2 and a plurality of cooling water pipes 1 arranged in parallel inside the cast iron stave body; the cast iron cooling wall body 2 is provided with a plurality of copper columns 4 in parallel along the cooling water pipe 1, and one end of each copper column 4 is connected with the cooling water pipe 1.
The cast iron cooling wall body 2 is also provided with dovetails 3 in parallel, and copper columns 4 are correspondingly arranged on the dovetails.
The connection mode of the copper column 4 and the cooling water pipe 1 is metallurgical bonding.
A refractory material layer 5 is also embedded in a dovetail groove between the two dovetails 3 on the cast iron cooling wall body 2.
The other end of the copper column 4 extends to the outside of the cast iron cooling wall body 2, and the copper column 4 is metallurgically bonded with the cooling wall body 2.
The plurality of cooling water pipes 1 are arranged in parallel along the length direction of the cooling wall.
The cooling water pipe 1 includes a vertical pipe section arranged along the length direction of the stave body 2, and a horizontal pipe section extending to the outside of the stave body 2.
The transverse pipe section of the cooling water pipe positioned at the lower part is a cooling medium inlet, and the transverse pipe section positioned at the upper part is a cooling medium outlet.
The material of the cast iron cooling wall body 2 is nodular cast iron.
The cast iron cooling wall body 2 is made of grey cast iron.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (9)
1. The utility model provides a copper post reinforcing refrigerated cast iron stave which characterized in that: comprises a cast iron cooling wall body (2) and a plurality of cooling water pipes (1) which are arranged in parallel inside the cast iron cooling wall body; the cast iron cooling wall body (2) is provided with a plurality of copper columns (4) in parallel along the cooling water pipe (1), and one end of each copper column (4) is connected with the cooling water pipe (1).
2. The cast iron stave with enhanced cooling of the copper cylinder according to claim 1 wherein: the cast iron cooling wall body (2) is also provided with dovetails (3) in parallel, and the copper columns (4) are correspondingly arranged on the dovetails (3).
3. The cast iron stave with enhanced cooling of the copper cylinder according to claim 2 wherein: a dovetail groove is formed between every two adjacent dovetails (3), and refractory materials (5) are inlaid in the dovetail grooves.
4. The cast iron stave with enhanced cooling of the copper cylinder according to claim 1 wherein: the other end of the copper column (4) extends to the outside of the cast iron cooling wall body (2) and is metallurgically bonded with the cooling wall body (2).
5. The cast iron stave with enhanced cooling of the copper cylinder according to claim 1 wherein: the plurality of cooling water pipes (1) are arranged in parallel along the length direction of the cooling wall body (2).
6. The cast iron stave with enhanced cooling of the copper cylinder according to claim 1 wherein: the cooling water pipe (1) comprises a vertical pipe section and a horizontal pipe section, wherein the vertical pipe section is arranged along the length direction of the cooling wall body (2), and the horizontal pipe section extends to the outside of the cooling wall body (2).
7. The cast iron stave with enhanced cooling of the copper cylinder according to claim 6 wherein: the horizontal pipe section positioned at the lower part is a cooling medium inlet, and the horizontal pipe section positioned at the upper part is a cooling medium outlet.
8. The cast iron stave with enhanced cooling of the copper cylinder according to claim 1 wherein: the cast iron cooling wall body (2) is made of nodular cast iron.
9. The cast iron stave with enhanced cooling of the copper cylinder according to claim 1 wherein: the cast iron cooling wall body (2) is made of grey cast iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121365160.8U CN216237128U (en) | 2021-06-19 | 2021-06-19 | Copper column reinforced cooling cast iron cooling wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121365160.8U CN216237128U (en) | 2021-06-19 | 2021-06-19 | Copper column reinforced cooling cast iron cooling wall |
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| Publication Number | Publication Date |
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| CN216237128U true CN216237128U (en) | 2022-04-08 |
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| CN202121365160.8U Active CN216237128U (en) | 2021-06-19 | 2021-06-19 | Copper column reinforced cooling cast iron cooling wall |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113308589A (en) * | 2021-06-19 | 2021-08-27 | 山东天铭重工科技股份有限公司 | Copper column reinforced cooling cast iron cooling wall |
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2021
- 2021-06-19 CN CN202121365160.8U patent/CN216237128U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113308589A (en) * | 2021-06-19 | 2021-08-27 | 山东天铭重工科技股份有限公司 | Copper column reinforced cooling cast iron cooling wall |
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