CN210287390U - Transverse bending type copper cooling wall - Google Patents
Transverse bending type copper cooling wall Download PDFInfo
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- CN210287390U CN210287390U CN201920998581.0U CN201920998581U CN210287390U CN 210287390 U CN210287390 U CN 210287390U CN 201920998581 U CN201920998581 U CN 201920998581U CN 210287390 U CN210287390 U CN 210287390U
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- cooling wall
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Abstract
The utility model relates to a horizontal bending type copper cooling wall, including copper cooling wall body, be equipped with an at least cooling channel, characterized by in the copper cooling wall body: the copper cooling wall body is bent inwards along the longitudinal central line of the hot surface of the copper cooling wall body, and the left side and the right side of the bent position are respectively the left half part of the copper cooling wall body and the right half part of the copper cooling wall body. The transverse bending type copper cooling wall can avoid the hot surface of the copper cooling wall body from being scoured and abraded by descending furnace charge and iron slag, prolong the service life of the copper cooling wall body, effectively reduce or even eliminate a furnace hearth triangular area formed between the flat-plate structured copper cooling wall body and a furnace hearth, avoid weak links at seams of the copper cooling wall bodies, simultaneously maintain the design inner shape of a blast furnace provided with the copper cooling wall body, and prolong the service life of the blast furnace.
Description
Technical Field
The utility model relates to a furnace body cooling device of an iron-making blast furnace, in particular to a transverse bending type copper cooling wall.
Background
With the development of modern blast furnace technology, the copper cooling wall of forged or rolled copper plate drilling type has the advantages of grain refinement, high compactness, good heat conductivity and the like, and is widely used for replacing cast copper and cast steel cooling equipment. The current blast furnace body consists of a furnace shell, a copper cooling wall and a furnace hearth (refractory material lining) from outside to inside. The furnace hearth mainly protects the furnace shell and the cooling wall at the initial stage of the blast furnace opening. The copper cooling stave is generally a copper cooling stave body 01 (see fig. 7) with a flat plate structure, and after a plurality of copper cooling stave bodies 01 with a flat plate structure are installed inside a blast furnace (the radius of the blast furnace is about 6 meters), each (usually 30-60) copper cooling stave bodies 01 are assembled into a regular polygon structure layer. Because the upper and lower adjacent regular polygon structure layers are arranged in a staggered manner, the hot surface 011 of the copper cooling wall body 01 in the whole blast furnace is a staggered regular polygon, so that the upper and lower adjacent regular polygon structure layers can form a triangular staggered area 02 (see fig. 8). After the blast furnace runs for a period of time, the wear of refractory materials on the inner side of the hot surface of the copper cooling wall body 01 even disappears, the triangular staggered area 02 of the copper cooling wall is easily scoured and worn by descending furnace charges and iron slag, and meanwhile, after the furnace charges descend, the triangular staggered area 02 is too prominent and is easily scoured by high-temperature coal gas flow carrying coke powder, so that the service life of the copper cooling wall body 01 is influenced.
In addition, in the area of the hearth 04 where the copper stave body 01 is arranged, since the hot face 011 of the copper stave body 01 is smooth and polygonal, a hearth triangle 05 (see fig. 9) is formed after the refractory is stacked in the hearth 04. Under the normal condition, the furnace cylinder triangular area 05 can be filled with anhydrous carbon daub (the anhydrous carbon daub is mainly prepared by high-temperature electric calcination anthracite, graphite and silicon carbide fine powder, and composite resin and additives are made of cementing materials and used for filling gaps between thin seam masonry carbon blocks) for protection, but when the furnace cylinder triangular area 05 is large, the anhydrous carbon daub is easily extruded out of the furnace cylinder triangular area 05 to form gaps, and the gaps become weak links at the seams of the copper cooling wall bodies 01, so that the design inner shape of the blast furnace is not maintained, and the service life of the blast furnace is influenced.
Disclosure of Invention
The utility model aims to solve the problem that a transversely bend type copper cooling wall is provided, and this kind of transversely bend type copper cooling wall is applied to the blast furnace, is favorable to prolonging the life of copper cooling wall and whole blast furnace.
In order to solve the technical problem, the utility model discloses a technical scheme as follows:
the utility model provides a horizontal bending type copper cooling wall, includes the copper cooling wall body, is equipped with at least one cooling channel, characterized by in the copper cooling wall body: the copper cooling wall body is bent inwards along the longitudinal central line of the hot surface of the copper cooling wall body, and the left side and the right side of the bent position are respectively the left half part of the copper cooling wall body and the right half part of the copper cooling wall body.
Generally, the side of the copper cooling stave body facing the blast furnace chamber is a hot side, and the side facing away from the blast furnace chamber is a cold side. The side where the hot surface is located is the inner side of the copper cooling wall body, and the side where the cold surface is located is the outer side of the copper cooling wall body. The longitudinal direction means the up-down direction.
After a plurality of transverse bending type copper cooling walls are installed inside a blast furnace, the connection between the left adjacent copper cooling wall body and the right adjacent copper cooling wall body becomes gentle (compared with the prior art, the included angle between the right half part of the left copper cooling wall body and the left half part of the right copper cooling wall body becomes larger), and the upper and lower adjacent regular polygon structure layers are basically superposed (the bent part of the copper cooling wall body in the upper regular polygon structure layer is superposed on the connection part of the left adjacent copper cooling wall body and the right adjacent copper cooling wall body in the lower regular polygon structure layer), so that an obvious triangular staggered area is prevented from being formed between the upper and lower adjacent circular structure layers, after the blast furnace runs for a period of time, after the wear of refractory materials on the hot surface of the copper cooling wall body even disappears, the hot surface of the copper cooling wall body is prevented from being scoured and abraded by descending furnace charge and iron slag, and the service life of the copper cooling wall body is prolonged. In addition, in the hearth area configured with the copper cooling wall, the hot surface of the copper cooling wall body can be in better fit contact with the outer side surface of the hearth, so that hearth triangular areas formed between the copper cooling wall body with a flat plate structure and the hearth can be effectively reduced or even eliminated, weak links at seams of the copper cooling wall bodies are avoided, the designed internal shape of the blast furnace provided with the copper cooling wall body can be maintained, and the service life of the blast furnace is prolonged.
Usually, the distance from the middle part of the cold surface of the copper cooling stave body to the inner side wall of the blast furnace shell is equal to the distance from the left side and the right side of the cold surface of the copper cooling stave body to the inner side wall of the blast furnace shell, namely the outer side surface of the regular polygon structure layer (namely the cold surface of each copper cooling stave body) can be well matched with the inner side wall of the blast furnace shell, so that no obvious gap exists between the cold surface of the copper cooling stave body and the inner side wall of the blast furnace shell.
As the preferred scheme of the utility model, the hot side and the cold side of the bending part of the copper cooling wall body are arc surfaces.
In a specific scheme, on the cross section of the copper cooling wall body, the hot surface consists of a left straight line segment, a middle circular arc segment and a right straight line segment, and the cold surface consists of the left straight line segment, the middle circular arc segment and the right straight line segment. The radian of the bent parts of the hot surface and the cold surface is set according to the requirements of different customers and the types of blast furnaces with different specifications.
In a concrete scheme, a plurality of cooling channels are arranged in the copper cooling wall body, the plurality of cooling channels are straight cooling channels moving up and down, the cooling channels are arranged from left to right, the upper end and the lower end of each cooling channel are respectively connected with a water inlet and outlet pipe, and the water inlet and outlet pipes are fixedly installed on the cold surface of the copper cooling wall body. Typically, the cooling channels are not in communication with each other. A cooling water path is formed by a cooling channel and water inlet and outlet pipes at the upper end and the lower end of the cooling channel, so that the copper cooling wall is provided with a plurality of groups of cooling water paths in parallel. During operation, cooling fluid enters the cooling channel from the water inlet and outlet pipe at one end, flows through the cooling channel and then flows out from the water inlet and outlet pipe at the other end, and heat on the copper cooling wall body can be effectively taken away.
The cooling channel can be obtained by drilling or other mechanical processing modes for removing materials on the copper cooling wall body (after drilling, the end part of the cooling channel is welded and blocked by an end plug, and a through hole for connecting with a water inlet pipe and a water outlet pipe is processed at the corresponding position on the cold surface). The cross section of the cooling channel can be a round hole, a flat hole, an elliptical hole or a composite hole. The composite hole is composed of more than two circular holes which are communicated with each other (usually, the circular holes in the composite hole are parallel to each other), the circles where two adjacent circular holes are located in the composite hole are intersected, and the distance between the centers of the two adjacent circular holes is smaller than the sum of the radiuses of the two circular holes. The cooling channel can also be a composite hole type water channel consisting of round holes with the same or different diameters.
As a proposal of the utility model, the hot surface of the copper cooling wall body is a plane.
As another proposal of the utility model, slag hanging grooves are evenly distributed on the hot surface of the copper cooling wall body. Through the arrangement, slag crust is easy to form on the hot surface of the copper cooling wall body, and the copper cooling wall can be better protected.
As a further preferred scheme of the utility model, the slag hanging groove is a transverse straight groove or a dovetail groove.
The material of the copper cooling wall body is copper or copper alloy.
Compared with the prior art, the utility model, have following advantage:
the transverse bending type copper cooling wall can avoid the hot surface of the copper cooling wall body from being scoured and abraded by descending furnace charge and iron slag, prolong the service life of the copper cooling wall body, effectively reduce or even eliminate a furnace hearth triangular area formed between the flat-plate structured copper cooling wall body and a furnace hearth, avoid weak links at seams of the copper cooling wall bodies, simultaneously maintain the design inner shape of a blast furnace provided with the copper cooling wall body, and prolong the service life of the blast furnace.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of two adjacent regular polygon structure layers in an upper and a lower direction in an embodiment of the present invention;
FIG. 3 is a schematic structural view of the embodiment of the present invention in which the hot side is in contact with the outer side of the hearth;
FIG. 4 is a schematic structural view of the copper cooling stave body before bending in the embodiment of the present invention;
FIG. 5 is a schematic structural view of the copper cooling stave body after bending according to the embodiment of the present invention;
FIG. 6 is a schematic structural view of a welded water inlet/outlet pipe of the copper cooling stave body according to the embodiment of the present invention;
FIG. 7 is a schematic structural view of a copper cooling stave body with a flat plate structure according to the background art of the present invention;
FIG. 8 is a schematic structural diagram of a triangular cross section in the background art of the present invention;
FIG. 9 is a schematic structural view of a hearth triangle in the background art of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-3, the transverse bending type copper cooling wall in this embodiment includes a copper cooling wall body 1, a plurality of cooling channels 2 are disposed in the copper cooling wall body 1, the copper cooling wall body 1 is bent inward along a longitudinal center line of a hot surface 11 thereof, and a left half 14 of the copper cooling wall body and a right half 15 of the copper cooling wall body are disposed on left and right sides of a bending portion 13 (i.e., a R direction in fig. 1), respectively.
Generally, the side of the copper stave body 1 facing the blast furnace chamber is a hot side 11, and the side facing away from the blast furnace chamber is a cold side 12. The hot surface 11 is positioned at the inner side of the copper cooling wall body 1, and the cold surface 12 is positioned at the outer side of the copper cooling wall body 1. The longitudinal direction means the up-down direction.
After installing a plurality of horizontal bending type copper cooling walls inside the blast furnace, a regular polygon structure layer assembled by the copper cooling wall bodies 1 of each (usually 30-60) horizontal bending type copper cooling wall, the connection of the two adjacent copper cooling wall bodies 1 on the left and right becomes gentle (compared with the prior art, the included angle between the right half part 15 of the copper cooling wall body on the left and the left half part 14 of the copper cooling wall body on the right becomes α larger), and the two adjacent regular polygon structure layers on the upper and lower sides are basically overlapped (the bending part 13 of the copper cooling wall body 1 in the upper regular polygon structure layer is overlapped on the connection part of the two adjacent copper cooling wall bodies 1 on the left and right of the lower regular polygon structure layer), thereby preventing the formation of an obvious triangular staggered area between the upper and lower adjacent circular structure layers, after the blast furnace runs for a period of time, after the wear of refractory material on the hot surface 11 of the copper cooling wall body 1 even disappears, preventing the hot surface 11 of the copper cooling wall body 1 from being washed and worn by falling furnace charge and slag iron, prolonging the service life of the copper cooling wall body 1, and preventing the effective contact between the furnace cylinder bodies 1 and the copper cooling wall 1 and reducing the appearance of the design of the hot cylinder structure of the flat plate cylinder structure, and reducing the appearance of the design of the hot cylinder structure of the furnace.
Usually, the distance from the middle part of the cold surface 12 of the copper cooling stave body 1 to the inner side wall of the blast furnace shell 3 is equal to the distance from the left and right sides of the cold surface 12 of the copper cooling stave body 1 to the inner side wall of the blast furnace shell 3, that is, the outer side surface of the regular polygon structure layer (i.e., the cold surface 12 of each copper cooling stave body 1) can be well matched with the inner side wall of the blast furnace shell 3, so that no obvious gap exists between the cold surface 12 of the copper cooling stave body 1 and the inner side wall of the blast furnace shell 3.
The hot surface 11 and the cold surface 12 of the bent part 13 of the copper cooling wall body 1 are both arc surfaces 16.
On the cross section of the copper cooling wall body 1, the hot surface 11 is composed of a left straight line section 111, a middle circular arc section 112 and a right straight line section 113, and the cold surface 12 is also composed of a left straight line section 121, a middle circular arc section 122 and a right straight line section 123. The radian of the bent part 13 of the hot surface 11 and the cold surface 12 is set according to the requirements of different customers and the types of blast furnaces with different specifications.
Each cooling channel 2 is a straight cooling channel running up and down, the cooling channels 2 are arranged from left to right, the upper end and the lower end of each cooling channel 2 are respectively connected with a water inlet and outlet pipe 5, and the water inlet and outlet pipes 5 are fixedly arranged on the cold surface 12 of the copper cooling wall body 1. Normally, the individual cooling channels 2 are not in communication with each other. A cooling channel 2 and water inlet and outlet pipes 5 at the upper end and the lower end of the cooling channel form a cooling water path, so that the copper cooling wall is provided with a plurality of groups of cooling water paths side by side. During operation, cooling fluid enters the cooling channel 2 from the water inlet and outlet pipe 5 at one end, flows through the cooling channel 2 and then flows out from the water inlet and outlet pipe 5 at the other end, and heat on the copper cooling wall body 1 can be effectively taken away.
The cooling channel 2 can be obtained by drilling or other mechanical processing methods to remove materials on the copper cooling wall body 1 (after drilling, the end part of the cooling channel is welded and blocked by an end plug, and a through hole for connecting with the water inlet pipe 5 and the water outlet pipe 5 is processed at the corresponding position on the cold surface 12). The cross section of the cooling channel 2 can be a circular hole, a flat hole, an elliptical hole or a composite hole. The composite hole is composed of more than two circular holes which are communicated with each other (usually, the circular holes in the composite hole are parallel to each other), the circles where two adjacent circular holes are located in the composite hole are intersected, and the distance between the centers of the two adjacent circular holes is smaller than the sum of the radiuses of the two circular holes. The cooling channels 2 may also be composite-hole type water channels consisting of circular holes with the same or different diameters.
Slag hanging grooves are uniformly distributed on the hot surface 11 of the copper cooling wall body 1. The slag hanging groove is a dovetail groove. Through the arrangement, slag crust is easy to form on the hot surface 11 of the copper cooling wall body 1, and the copper cooling wall can be better protected.
The material of the copper cooling wall body 1 is copper.
As shown in fig. 4-6, the manufacturing process of the transverse bending type copper cooling wall is as follows:
the copper cooling wall body 1 is firstly made of an integral forged copper plate or a rolled copper plate;
then, a cooling channel 2 is obtained by drilling or other mechanical processing modes for removing materials on the copper cooling wall body 1 (after drilling, the end part of the cooling channel is welded and blocked by an end plug, and a through hole for connecting with the water inlet pipe 5 and the water outlet pipe 5 is processed at the corresponding position on the cold surface 12);
then, milling a slag hanging groove on the hot surface 11 of the copper cooling wall body 1;
then, after the whole copper cooling wall body 1 is heated, transversely bending the whole copper cooling wall body along the longitudinal central line of the hot surface 11 of the whole copper cooling wall body to ensure that the bending radian meets the design requirement, and forming an arc surface 16 at the bending part 13 (namely the R direction in the figure 5) of the hot surface 11 of the copper cooling wall body 1;
and finally, boring and milling a water pipe groove in a through hole on the cold surface 12 of the copper cooling wall body 1, and welding the water inlet pipe and the water outlet pipe 5 to finally form the transverse bending type copper cooling wall.
In addition, it should be noted that the names of the parts and the like of the embodiments described in the present specification may be different, and all the equivalent or simple changes made according to the structure, the features and the principle of the present invention are included in the protection scope of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (7)
1. The utility model provides a horizontal bending type copper cooling wall, includes the copper cooling wall body, is equipped with at least one cooling channel, characterized by in the copper cooling wall body: the copper cooling wall body is bent inwards along the longitudinal central line of the hot surface of the copper cooling wall body, and the left side and the right side of the bent position are respectively the left half part of the copper cooling wall body and the right half part of the copper cooling wall body.
2. The transversely bent copper cooling stave of claim 1 further characterized by: and the hot surface and the cold surface of the bent part of the copper cooling wall body are both arc surfaces.
3. The transversely bent copper cooling stave of claim 2 further characterized by: on the cross section of the copper cooling wall body, the hot surface consists of a left straight line segment, a middle circular arc segment and a right straight line segment, and the cold surface consists of a left straight line segment, a middle circular arc segment and a right straight line segment.
4. The transversely bent copper cooling stave of claim 1 further characterized by: the copper cooling wall body is internally provided with a plurality of cooling channels which are all straight cooling channels moving up and down, the cooling channels are arranged from left to right, the upper end and the lower end of each cooling channel are respectively connected with a water inlet and outlet pipe, and the water inlet and outlet pipes are fixedly arranged on the cold surface of the copper cooling wall body.
5. The transversely bent copper cooling stave of claim 1 further characterized by: the hot surface of the copper cooling wall body is a plane.
6. The transversely bent copper cooling stave of claim 1 further characterized by: slag hanging grooves are uniformly distributed on the hot surface of the copper cooling wall body.
7. The transversely bent copper cooling stave of claim 6 further characterized by: the slag hanging groove is a transverse straight groove or a dovetail groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920998581.0U CN210287390U (en) | 2019-06-29 | 2019-06-29 | Transverse bending type copper cooling wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920998581.0U CN210287390U (en) | 2019-06-29 | 2019-06-29 | Transverse bending type copper cooling wall |
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| Publication Number | Publication Date |
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| CN210287390U true CN210287390U (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920998581.0U Active CN210287390U (en) | 2019-06-29 | 2019-06-29 | Transverse bending type copper cooling wall |
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| CN (1) | CN210287390U (en) |
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- 2019-06-29 CN CN201920998581.0U patent/CN210287390U/en active Active
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Address after: 521000 Shayuan, shangfushan, Qiandong Town, Raoping County, Chaozhou City, Guangdong Province Patentee after: SHANTOU HUAXING (RAOPING) COPPER INDUSTRY Co.,Ltd. Patentee after: SHANTOU HUAXING METALLURGICAL EQUIPMENT Co.,Ltd. Address before: 515000 Rongsheng Science Park, Daxue Road, Jinping District, Shantou City, Guangdong Province Patentee before: SHANTOU HUAXING METALLURGICAL EQUIPMENT Co.,Ltd. Patentee before: SHANTOU HUAXING (RAOPING) COPPER INDUSTRY Co.,Ltd. |
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| CP03 | Change of name, title or address |