Novel cooler

Abstract

The utility model discloses a novel cooler, which is characterized by comprising a back plate and at least one cooling water pipe, the cooling water pipe is formed by bending a pipe body, two ends of the cooling water pipe are respectively provided with a first water inlet and a first water outlet, and each cooling water pipe is connected with the back plate; a plurality of anchoring parts are arranged on the outer wall of the cooling water pipe, and the inner end of each anchoring part is connected with the outer wall of the cooling water pipe. The novel cooler is good in cooling effect and low in manufacturing cost.

Description

Technical Field

[0001] The utility model relates to furnace cooling equipment for a high-temperature smelting furnace, in particular to a new type of cooler. Background Art

[0002] With the development of modern heat exchange technology, copper materials, due to their excellent thermal conductivity, have been gradually expanded to various cooling equipment in high-temperature smelting furnaces to enhance the cooling of the furnace body to protect the furnace body and extend the service life of the furnace body. For example, copper cooling plates and copper cooling walls in iron-making blast furnaces are widely used and play an important role in the longevity of blast furnaces.

[0003] At present, the blast furnace cooling equipment mainly includes copper cooling plates and copper cooling walls, and the mainstream structures are buried pipe casting and copper plate drilling. The buried pipe casting structure (preforming the copper pipe by plastic processing, pouring copper water to form a copper cooling plate or copper cooling wall covering the copper pipe) has the advantage that the layout of the cooling water channel is more flexible on the basis of meeting its specific process structure. The disadvantage is that the copper water pipe has defects such as pore inclusions and cracks, and there are defects such as gaps between the water pipe and the copper body cast by copper water. There is a very large air gap thermal resistance, which seriously affects its thermal conductivity. The copper plate drilling structure (drilling holes on the copper plate, and then installing plugs according to design requirements to form a cooling water channel) has the advantages of dense material, no cracks, slag inclusions, pores and other defects, excellent thermal conductivity, and long service life. However, the manufacturing process requires drilling, milling grooves, welding and other processes, and the production process is complex, the production difficulty is high, and the cost is high. Summary of the invention

[0004] The problem to be solved by the utility model is to provide a new type of cooler, which has good cooling effect and low manufacturing cost.

[0005] In order to solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0006] A new type of cooler, characterized in that it includes a back plate and at least one cooling water pipe, the cooling water pipe is formed by bending a pipe body, a first water inlet and a first water outlet are respectively provided at both ends of the cooling water pipe, and each cooling water pipe is connected to the back plate; a plurality of anchors are provided on the outer wall of the cooling water pipe, and the inner end of each anchor is connected to the outer wall of the cooling water pipe.

[0007] Usually, the main body of the cooling water pipe is arranged on the hot surface of the back plate. The main body of the cooling water pipe refers to the part of the cooling water pipe except the two ends of the cooling water pipe near the first water inlet and the first water outlet. Usually, the side of the back plate facing the furnace cavity of the submerged arc furnace is the hot surface, and the side facing away from the furnace cavity of the submerged arc furnace is the cold surface.

[0008] The above-mentioned anchor is used to fix the refractory material. When cooling, water is passed into the cooling water pipe for cooling, and the anchor itself is transferred to the cooling water pipe by heat conduction. The heat generated by the high temperature of the furnace of the electric arc furnace is absorbed by the refractory material by radiation and convection, and the refractory material is transferred to the surface of the cooling water pipe and the surface of the anchor by heat conduction. The heat is transferred to the inside of the cooling water pipe by heat conduction, and then the heat of the cooling water pipe is taken away by heat conduction and convection heat exchange of the cooling water inside the cooling water pipe.

[0009] The cooling water pipe is formed by drawing or extruding the pipe body and then bending it. The anchor is made by machining or additive manufacturing.

[0010] In a preferred embodiment, the inner ends of the anchors are installed at intervals on the outer wall of the cooling water pipe by melting welding or pressure welding. This arrangement can improve the connection strength between the anchors and the cooling water pipe and increase the cooling performance of the anchors.

[0011] In a preferred embodiment, the cross-sectional shape of the anchor is a straight line, a Y-shape, a circle, an ellipse or a polygon. The polygon may be a triangle or a polygon with more than 3 sides. Of course, the cross-sectional shape of the anchor may also be other shapes.

[0012] In a preferred embodiment, the anchor is made of copper, copper alloy, carbon steel or stainless steel.

[0013] In a preferred embodiment, at least one cooling water channel is provided inside the back plate, and a second water inlet and a second water outlet are provided at both ends of the cooling water channel. The cooling water channel is processed inside the back plate to further cool the refractory material and ensure that the furnace body is not overheated. During cooling, part of the heat is transferred to the cooling water channel inside the back plate through heat conduction through the back plate, and the other part of the heat is taken away by convection heat transfer, so that the furnace shell is not overheated.

[0014] Generally, there may be multiple cooling water channels inside the back plate, which can improve the reliability of the back plate. The cooling water channels on the back plate are formed by drilling water channel holes on the back plate and processing matching plugs, and then welding to form the cooling water channels; or by processing water channel grooves and cover plates matching the water channel grooves on the back plate, and then welding (argon arc welding, brazing, laser welding, electron beam welding, stir friction welding, cold pressure welding, diffusion welding, etc.) to form the cooling water channels.

[0015] In a further preferred embodiment, a water inlet pipe is provided at the second water inlet, and one end of the water inlet pipe is connected to the back plate; a water outlet pipe is provided at the second water outlet, and one end of the water outlet pipe is connected to the back plate.

[0016] In a further preferred embodiment, a reinforcement strip is welded on the hot surface or the cold surface of the back plate. The arrangement of the reinforcement strip can improve the overall strength of the back plate and make the back plate less likely to deform.

[0017] In a further preferred embodiment, the reinforcement strip is a steel bar, a steel pipe or an aluminum profile.

[0018] In a further preferred embodiment, the cross-sectional shape of the cooling water channel is semicircular, rectangular, triangular, oblong or parabolic. Of course, the cross-sectional shape of the cooling water channel can also be other shapes.

[0019] In a preferred embodiment, the back plate is a copper plate, a copper alloy plate, an aluminum plate, an aluminum alloy plate, a carbon steel plate, a stainless steel plate, a copper-steel composite plate or a copper-aluminum composite plate.

[0020] In a preferred embodiment, the cooling water pipe includes a plurality of straight segments and a plurality of arc segments arranged alternately; in two adjacent straight segments, one end of a straight segment is integrally connected to one end of the arc segment, and the other end of the arc segment is integrally connected to one end of the other straight segment.

[0021] In a preferred embodiment, the number of the cooling water pipes is two or more. Usually, the cooling water pipes are stacked on the hot surface of the back plate. If the water supply is stopped for a short time, resulting in the extreme case of partial burning of one cooling water pipe, the other cooling water pipes can still conduct heat, which can delay the more serious burning caused by the water supply failure of one cooling water pipe.

[0022] In a preferred embodiment, the cross-sectional shape of the cooling water pipe is circular, square, elliptical, trapezoidal or triangular. Of course, the cross-sectional shape of the cooling water pipe can also be other shapes.

[0023] In a preferred embodiment, the material of the tube body is pure copper, copper alloy, steel, stainless steel or monel alloy. The copper alloy can be copper-chromium alloy, copper-zinc alloy, copper-silver alloy or copper-zirconium alloy.

[0024] The materials of the above-mentioned tube body, anchor and back plate can be selected according to the different requirements of mechanical strength and cooling strength of the use part. If the new cooler is set in a position that is in direct contact with or close to harsh working conditions, pure copper, copper-chromium alloy, copper-silver alloy or copper-zirconium alloy can be selected. The mechanical strength of copper is about 220MPa, and after using copper-chromium alloy, copper-silver alloy and copper-zirconium alloy, the tensile strength can be increased to more than 400MPa, and the hardness is increased from 35HB-45HB to 60HB and above, thereby improving the wear resistance of the entire new cooler. If the new cooler is set in a position far away from harsh working conditions, in addition to pure copper, copper-chromium alloy, copper-silver alloy or copper-zirconium alloy, non-copper metals and non-copper metal alloys (for example: iron and iron alloys, aluminum and aluminum alloys, etc.) can also be selected. The materials of the above-mentioned tube body, anchor and back plate can be the same or different.

[0025] Compared with the prior art, the utility model has the following advantages:

[0026] (1) Adding anchors to the outer wall of the cooling water pipe can better fix the refractory material and increase the heat conduction area of ​​the cooling water pipe;

[0027] (2) The back plate is used as a support for the cooling water pipes, which can better maintain the stability of the shape and position of each cooling water pipe and ensure that the entire new cooler has a higher overall strength;

[0028] (3) Compared with the existing cooling staves, under the condition of the same cooling water volume, this new type of cooler is closer to the hot surface of the submerged arc furnace (i.e. the working surface of the furnace body or the fire-facing surface of the kiln), has lower thermal resistance, better cooling effect, lower manufacturing cost, and high cost performance. It can be used as a transitional product before customers inspect and replace the copper cooling staves to meet the different needs of customers. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0030] Figure 2 yes Figure 1 Rear view of

[0031] Figure 3 yes Figure 1 Cross-section of the mid-back panel;

[0032] Figure 4 It is a structural schematic diagram of Embodiment 2 of the present utility model;

[0033] Figure 5 It is a structural schematic diagram of Embodiment 3 of the present utility model;

[0034] Figure 6 It is a structural schematic diagram of Embodiment 4 of the present utility model;

[0035] Figure 7 It is a structural schematic diagram of Embodiment 5 of the present utility model;

[0036] Figure 8 It is a structural schematic diagram of embodiment 6 of the present utility model. DETAILED DESCRIPTION

[0037] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Example 1

[0039] like Figure 1-3 As shown, the new cooler in this embodiment includes a back plate 1 and a cooling water pipe 2. The cooling water pipe 2 is formed by bending a pipe body. A first water inlet 21 and a first water outlet 22 are respectively provided at both ends of the cooling water pipe 2. Each cooling water pipe 2 is connected to the back plate 1; a plurality of anchors 3 are provided on the outer wall of the cooling water pipe 2, and the inner end of each anchor 3 is connected to the outer wall of the cooling water pipe 2.

[0040] Usually, the main body of the cooling water pipe 2 is arranged on the hot surface 16 of the back plate 1. The main body of the cooling water pipe 2 refers to the portion of the cooling water pipe 2 except the two ends thereof close to the first water inlet 21 and the first water outlet 22. Usually, the side of the back plate 1 facing the furnace cavity of the submerged arc furnace is the hot surface 16, and the side facing away from the furnace cavity of the submerged arc furnace is the cold surface 17.

[0041] The anchor 3 is used to fix the refractory material. When cooling, water is passed into the cooling water pipe 2 for cooling, and the anchor 3 itself is transferred to the cooling water pipe 2 by heat conduction. The heat generated by the high temperature of the furnace of the submerged arc furnace is absorbed by the refractory material by radiation and convection, and the refractory material is transferred to the surface of the cooling water pipe 2 and the surface of the anchor 3 by heat conduction. The heat is transferred to the inside of the cooling water pipe 2 by heat conduction, and then the heat of the cooling water pipe 2 is taken away by heat conduction and convection heat exchange of the cooling water inside the cooling water pipe 2.

[0042] The cooling water pipe 2 is formed by drawing or extruding the pipe body and then bending it. The anchor 3 is made by machining or additive manufacturing.

[0043] The inner ends of the anchors 3 are installed at intervals on the outer wall of the cooling water pipe 2 by melting welding or pressure welding. Through this arrangement, the connection strength between the anchors 3 and the cooling water pipe 2 can be improved, and the cooling performance of the anchors 3 can be increased.

[0044] The cross-sectional shape of the anchor 3 is a straight line. Of course, the cross-sectional shape of the anchor 3 can also be other shapes.

[0045] The anchor 3 is made of copper, copper alloy, carbon steel or stainless steel.

[0046] At least one cooling water channel 11 is provided inside the back plate 1, and a second water inlet 12 and a second water outlet 13 are provided at both ends of the cooling water channel 11. The cooling water channel 11 is processed inside the back plate 1 to further cool the refractory material and ensure that the furnace body is not overheated. During cooling, part of the heat is conducted through the back plate 1 and transferred to the cooling water channel 11 inside the back plate 1, and the other part of the heat is taken away by convection heat transfer, so that the furnace shell is not overheated.

[0047] Generally, there may be a plurality of cooling water channels 11 inside the back plate 1, which can improve the reliability of the back plate 1. The cooling water channels 11 on the back plate 1 are formed by drilling water channel holes on the back plate 1 and processing matching plugs, and then welding to form the cooling water channels 11; or by processing water channel grooves and a cover plate matching the water channel grooves on the back plate 1, and then welding (argon arc welding, brazing, laser welding, electron beam welding, stir friction welding, cold pressure welding, diffusion welding, etc.) to form the cooling water channels 11.

[0048] A water inlet pipe 14 is provided at the second water inlet 12 , and one end of the water inlet pipe 14 is connected to the back plate 1 ; a water outlet pipe 15 is provided at the second water outlet 13 , and one end of the water outlet pipe 15 is connected to the back plate 1 .

[0049] The cross-sectional shape of the cooling water channel 11 is semicircular, rectangular, triangular, oblong or parabolic. Of course, the cross-sectional shape of the cooling water channel 11 can also be other shapes.

[0050] The back plate 1 is a copper alloy plate. The cooling water pipe 2 is in the shape of a round pipe.

[0051] The cooling water pipe 2 includes a plurality of straight segments 23 and a plurality of arc segments 24 arranged alternately; in two adjacent straight segments 23 , one end of a straight segment 23 is integrally connected to one end of an arc segment 24 , and the other end of the arc segment 24 is integrally connected to one end of another straight segment 23 .

[0052] The material of the tube body is copper alloy. The materials of the above-mentioned tube body, anchor 3 and back plate 1 can be selected according to the different requirements of the mechanical strength and cooling strength of the use part. If the new cooler is set in a position that is in direct contact with or close to harsh working conditions, pure copper, copper-chromium alloy, copper-silver alloy or copper-zirconium alloy is selected. The mechanical strength of copper is about 220MPa, and after using copper-chromium alloy, copper-silver alloy and copper-zirconium alloy, the tensile strength can be increased to more than 400MPa, and the hardness is increased from 35HB-45HB to 60HB and above, thereby improving the wear resistance of the entire new cooler. If the new cooler is set in a position away from harsh working conditions, pure copper, copper-chromium alloy, copper-silver alloy or copper-zirconium alloy can be selected, and non-copper metals and non-copper metal alloys (for example: iron and iron alloys, aluminum and aluminum alloys, etc.) can also be selected. The materials of the above-mentioned tube body, anchor 3 and back plate 1 can be the same or different.

[0053] Example 2

[0054] like Figure 4 As shown, the difference between the new cooler in this embodiment and embodiment 1 is that:

[0055] The cross-sectional shape of the anchor 3 is Y-shaped.

[0056] Example 3

[0057] like Figure 5 As shown, the difference between the new cooler in this embodiment and embodiment 1 is that:

[0058] The cooling water pipe 2 is in the shape of a square pipe.

[0059] Example 4

[0060] like Figure 6 As shown, the difference between the new cooler in this embodiment and embodiment 1 is that:

[0061] A reinforcing strip 4 is welded on the hot surface 16 of the back plate 1. The arrangement of the reinforcing strip 4 can improve the overall strength of the back plate 1 and make the back plate 1 less likely to deform. The reinforcing strip 4 is a steel strip.

[0062] Example 5

[0063] like Figure 7 As shown, the difference between the new cooler in this embodiment and embodiment 4 is that:

[0064] A reinforcement strip 4 is welded on the cold surface 17 of the back plate 1. The reinforcement strip 4 can improve the overall strength of the back plate 1 and make the back plate 1 less likely to deform. The reinforcement strip 4 is a steel pipe.

[0065] Example 6

[0066] like Figure 8 As shown, the difference between the new cooler in this embodiment and embodiment 1 is that:

[0067] There are more than two cooling water pipes 2. Usually, each cooling water pipe 2 is stacked on the hot surface 16 of the back plate 1. If the water supply is stopped for a short time, resulting in the extreme case of partial burning of one cooling water pipe 2, the other cooling water pipes 2 can still conduct heat, which can delay the more serious burning caused by the water supply failure of one cooling water pipe 2.

[0068] In addition, it should be noted that the names of the various parts of the specific embodiments described in this specification may be different, and any equivalent or simple changes made based on the structure, features and principles described in the utility model patent concept are included in the protection scope of the utility model patent. The technical personnel of the technical field to which the utility model belongs can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.

Claims

1. A new type of cooler, characterized in that: It includes a back plate and at least one cooling water pipe, which is formed by bending a pipe body. A first water inlet and a first water outlet are respectively provided at both ends of the cooling water pipe, and each cooling water pipe is connected to the back plate; a plurality of anchors are provided on the outer wall of the cooling water pipe, and the inner end of each anchor is connected to the outer wall of the cooling water pipe.

2. The novel cooler according to claim 1 is characterized in that: The inner ends of the anchors are installed at intervals on the outer wall of the cooling water pipe by fusion welding or pressure welding.

3. The novel cooler according to any one of claims 1-2, characterized in that: The cross-sectional shape of the anchor is straight, Y-shaped, circular, elliptical or polygonal.

4. The novel cooler according to claim 3 is characterized in that: The anchor is made of copper, copper alloy, carbon steel or stainless steel.

5. The novel cooler according to claim 1 is characterized in that: At least one cooling water channel is arranged inside the back plate, and a second water inlet and a second water outlet are respectively arranged at two ends of the cooling water channel.

6. The novel cooler according to claim 5 is characterized in that: A water inlet pipe is provided at the second water inlet, one end of which is connected to the back plate; a water outlet pipe is provided at the second water outlet, one end of which is connected to the back plate; The cross-sectional shape of the cooling water channel is semicircular, rectangular, triangular, oblong or parabolic.

7. The novel cooler according to claim 5 is characterized in that: A reinforcement strip is welded on the hot surface or the cold surface of the back plate.

8. The novel cooler according to claim 7 is characterized in that: The reinforcement strip is a steel strip, a steel pipe or an aluminum profile.

9. The novel cooler according to claim 1 is characterized in that: The cooling water pipe comprises a plurality of straight segments and a plurality of arc segments arranged alternately; in two adjacent straight segments, one end of a straight segment is integrally connected to one end of the arc segment, and the other end of the arc segment is integrally connected to one end of the other straight segment; The number of the cooling water pipes is more than two.

10. The novel cooler according to claim 1 is characterized in that: The cross-sectional shape of the cooling water pipe is circular, square, elliptical, trapezoidal or triangular; The material of the tube body is pure copper, copper alloy, steel, stainless steel or monel alloy.

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