Combined cooling wall structure

Abstract

The utility model provides a combined type cooling wall structure, which comprises a cooling wall body, a plurality of cooling walls and a plurality of cooling walls, the at least two water pipe groups are located in the cooling wall body, each water pipe group comprises a first water pipe and a second water pipe which are adjacently arranged, the first water pipe extends in the length direction of the cooling wall body, and the second water pipe comprises a longitudinal section extending in the length direction of the cooling wall body and a transition section connected with the longitudinal section; a water outlet in the upper end of the second water pipe and a water outlet in the upper end of the first water pipe are adjacent in the length direction of the cooling wall body and are oppositely arranged up and down; the at least one cooling strip is arranged on the hot surface of the cooling wall body, the length direction of the cooling strip is perpendicular to the length direction of the first water pipe, and the two ends of the cooling strip cover the first water pipe or the second water pipe on the outermost side of the cooling wall body. The combined type cooling wall structure can solve the problem that in the prior art, the cooling effect of a cooling wall is not uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of iron and steel metallurgy, in particular to a combined cooling wall structure. Background Art

[0002] In recent years, in the areas with high heat load in blast furnaces such as the furnace belly, furnace waist and a section of cooling staves at the bottom of the furnace body, a new combined cooling structure with copper cooling strips embedded in the hot surface of the cast iron cooling stave has been widely recognized by the industry for its good cooling effect and low cost. However, during the application of this cooling structure, the corners of the cast iron cooling stave were more damaged than the center part. The upgrade and strengthening of the combined cooling structure has become an urgent problem to be solved. Utility Model Content

[0003] The utility model aims to provide a combined cooling wall structure to solve the problem of uneven cooling effect of the cooling wall in the prior art.

[0004] The utility model provides a combined cooling wall structure, which comprises:

[0005] The cooling wall body is installed on the inner wall of the blast furnace shell;

[0006] At least two water pipe groups are located in the cooling stave body, each of the water pipe groups includes a first water pipe and a second water pipe that are adjacently arranged, the first water pipe extends along the length direction of the cooling stave body, the second water pipe includes a longitudinal section extending along the length direction of the cooling stave body and a transition section connected to the longitudinal section, and the water outlet at the upper end of the second water pipe and the water outlet at the upper end of the first water pipe are adjacent to each other and arranged opposite to each other in the vertical direction of the cooling stave body;

[0007] At least one cooling strip is arranged on the hot surface of the cooling wall body, the length direction of the cooling strip is perpendicular to the length direction of the first water pipe, and both ends of the cooling strip cover the first water pipe or the second water pipe at the outermost side of the cooling wall body.

[0008] The combined cooling wall structure described in the utility model adopts a cooling method of combining a cooling wall body and cooling strips, and the cooling effect of the entire cooling wall structure is better; the arrangement method of the water pipe group cast in the cooling wall body can improve the distribution density of the water pipes therein, thereby improving the cooling strength of the cooling wall body; the length of the cooling strips is relatively long, and it can cover the water pipe positions on the edges of both sides of the cooling wall body, thereby enhancing the cooling strength and slag hanging ability of the edges of the cooling wall body, thereby extending its service life.

[0009] In a preferred embodiment of the present invention, a cooling pipe is cast inside the cooling strip, and the cooling pipe includes an inner cast section extending along the length direction of the cooling strip and an extension section extending from the side of the cooling strip, and the extension section passes through the cooling wall body.

[0010] The water pipes in the cooling wall body and the cooling pipes in the cooling strips are arranged in a crisscross pattern, and cooling water flows through both. The cooling water flowing in two different directions can ensure the uniformity of the cooling intensity of the combined cooling wall structure.

[0011] In a preferred embodiment of the present invention, the water inlet at the lower end of the first water pipe and the water inlet at the lower end of the second water pipe are adjacently arranged along the width direction of the cooling wall body.

[0012] The water inlets of the first water pipe and the second water pipe in the cooling stave body are arranged adjacent to each other along the width direction of the cooling stave body, and the water inlets of the water pipes can be arranged side by side at the bottom end of the cooling stave body to enhance the cooling strength at the lower edge of the cooling stave body.

[0013] In a preferred embodiment of the present invention, two opposite water pipe groups are provided in the cooling wall body, the two first water pipes in the two water pipe groups are arranged adjacent to each other, and the two second water pipes are located on both sides of the cooling wall body and are arranged in a mirror-symmetrical manner.

[0014] In this embodiment, two groups of water pipes are cast in the cooling stave body and arranged opposite to each other. The cooling stave body is an axisymmetric structure, and the cooling strengths on the left and right sides of the cooling stave body are substantially the same.

[0015] In a preferred embodiment of the present invention, the cooling strip includes a first cooling strip located at the upper end of the cooling wall body and a second cooling strip located at the lower end of the cooling wall body, the center line of the cooling pipe in the first cooling strip is at the same height as the water outlet of the second water pipe, and the extension section of the cooling pipe in the first cooling strip is located outside the transition section of the second water pipe.

[0016] The first cooling strip and the second cooling strip are respectively located at the upper edge and the lower edge of the cooling wall body, and the two ends of the first cooling strip are located at the two corners of the upper end of the cooling wall body. Therefore, the distribution position of the first cooling strip and the second cooling strip can improve the cooling strength and slag hanging capacity of the ends of the cooling wall body, especially the upper and lower ends.

[0017] In a preferred embodiment of the present invention, the second cooling strip is arranged adjacent to the water inlet of the second water pipe, the extension section of the cooling pipe in the second cooling strip is located outside the longitudinal section of the second water pipe, and a local bending section is provided at the position of the longitudinal section corresponding to the extension section of the cooling pipe.

[0018] Since the density of the water pipes cast in the cooling wall body is relatively large, and the water inlets of the water pipes are arranged side by side without reserving space for the layout of the extension section in the second cooling strip, a local bending section is provided on the second water pipe to ensure that the cooling strip can smoothly pass through the cooling wall body to avoid interference between the second water pipe and the cooling pipe.

[0019] In a preferred embodiment of the present invention, the vertical distance between the center line of the extended section of the cooling pipe in the first cooling strip and / or the second cooling strip and the center line of the first water pipe adjacent thereto is A, and the vertical distance between the center lines of the two first water pipes in the two water pipe groups is B, wherein A=B.

[0020] The above-mentioned restrictions on the cooling pipes in the first cooling strip and the second cooling strip can ensure that the extension length of the cooling pipe can cover the position of the second water pipes at the two side edges of the cooling wall body, thereby enhancing the cooling strength and slag hanging capacity of the edge of the cooling wall body, thereby extending its service life.

[0021] In a preferred embodiment of the present invention, the cooling strip also includes at least one third cooling strip located between the first cooling strip and the second cooling strip, and the extension section of the cooling pipe in the third cooling strip is located between the first water pipe and the second water pipe in the water pipe group.

[0022] The provision of a plurality of third cooling strips can further enhance the cooling strength of the middle portion of the cooling stave body.

[0023] In a preferred embodiment of the present invention, the vertical distance between two adjacent cooling strips is no more than 600 mm.

[0024] The number of cooling strips provided on the hot surface of the cooling wall body can be determined according to actual needs, but the distance between two adjacent cooling strips should not be greater than 600 mm to avoid a decrease in cooling effect due to sparse distribution of cooling strips.

[0025] In a preferred embodiment of the present invention, the side surface of the cooling strip facing the inner side of the blast furnace is an arc-shaped surface parallel to the hot surface of the cooling wall body.

[0026] The hot surface of the cooling wall body is arc-shaped, and the hot surface of the cooling strip is also set as an arc surface. The length of the hot surface of the cooling wall body exposed at the center of the cooling strip is the same as the length of the hot surface of the cooling wall body exposed at both sides of the cooling strip, thereby improving the uniformity of cooling the hot surface of the cooling wall body. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0028] The drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. Under the guidance of the present invention, those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances.

[0029] Figure 1 It is a front view schematic diagram of the combined cooling wall structure of the utility model;

[0030] Figure 2 It is a side view schematic diagram of the combined cooling wall structure of the utility model;

[0031] Figure 3 for Figure 1 A cross-sectional schematic diagram in the MM direction;

[0032] Figure 4 for Figure 1 Schematic cross-sectional view along the NN axis.

[0033] Description of Figure Numbers:

[0034] 10. Cooling stave body;

[0035] 20. water pipe group; 21. first water pipe; 22. second water pipe; 221. longitudinal section; 222. transition section; 223. local bending section;

[0036] 30. cooling strip; 31. first cooling strip; 32. second cooling strip; 33. third cooling strip;

[0037] 40. Cooling pipe; 41. Inner casting section; 42. Extension section;

[0038] 50. Blast furnace shell. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0040] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0042] like Figure 1 and Figure 2 As shown, the utility model provides a combined cooling stave structure, which includes: a cooling stave body 10, which is installed on the inner wall of a blast furnace shell 50; at least two water pipe groups 20, which are located in the cooling stave body 10, each water pipe group 20 includes a first water pipe 21 and a second water pipe 22 arranged adjacent to each other, the first water pipe 21 extends along the length direction of the cooling stave body 10, the second water pipe 22 includes a longitudinal section 221 extending along the length direction of the cooling stave body 10 and a transition section 222 connected to the longitudinal section 221, the water outlet at the upper end of the second water pipe 22 and the water outlet at the upper end of the first water pipe 21 are adjacent to each other along the length direction of the cooling stave body 10 and are arranged opposite to each other up and down; at least one cooling strip 30 is arranged on the hot surface of the cooling stave body 10, the length direction of the cooling strip 30 is perpendicular to the length direction of the first water pipe 21, and the two ends of the cooling strip 30 cover the first water pipe 21 or the second water pipe 22 at the outermost side of the cooling stave body 10.

[0043] The combined cooling stave structure of the utility model adopts a cooling method of combining a cooling stave body 10 and a cooling strip 30, and the cooling effect of the entire cooling stave structure is better; the arrangement method of the water pipe group 20 cast in the cooling stave body 10 can improve the distribution density of the water pipes therein, thereby improving the cooling strength of the cooling stave body 10; the length of the cooling strip 30 is relatively long, and it can cover the water pipes at the edge positions on both sides of the cooling stave body 10, thereby enhancing the edge cooling strength and slag hanging ability of the cooling stave body 10, thereby extending its service life.

[0044] Specifically, Figures 1 to 4 As shown, the stave body 10 is generally in an arc-shaped block shape and is installed on the inner wall surface of the blast furnace shell 50; in this embodiment, the stave body 10 is cast from cast iron. The stave body 10 includes a hot surface facing the blast furnace cavity and a cold surface partially in contact with the inner wall surface of the blast furnace shell 50.

[0045] The cooling stave body 10 is provided with water pipes parallel to each other, wherein the adjacent first water pipe 21 and the second water pipe 22 form a water pipe group 20; in this embodiment, the cooling stave body 10 is provided with two opposite water pipe groups 20, the two first water pipes 21 in the two water pipe groups 20 are adjacently arranged, and the two second water pipes 22 are located on both sides of the cooling stave body 10. The two oppositely arranged water pipe groups 20 cast in the cooling stave body 10 make the cooling stave body 10 present a symmetrical structure, and the cooling strengths on the left and right sides thereof are substantially the same.

[0046] Further, the first water pipe 21 extends along the length direction of the cooling stave body 10, and the port of the first water pipe 21 located at the lower end of the cooling stave body 10 forms a water inlet, and the port of the first water pipe 21 located at the upper end of the cooling stave body 10 forms a water outlet, and cooling water can enter the first water pipe 21 from the water inlet and flow out from the water outlet. The second water pipe 22 includes a longitudinal section 221 extending along the length direction of the cooling stave body 10 and a transition section 222 connected to the longitudinal section 221, the longitudinal section 221 is a straight pipe parallel to the first water pipe 21, the transition section 222 is a small section of curved pipe connected to the upper end of the longitudinal section 221, the port at the lower end of the longitudinal section 221 forms a water inlet, and the port at the upper end of the transition section 222 forms a water outlet, and cooling water can enter the second water pipe 22 from the water inlet and flow out from the water outlet.

[0047] Preferably, due to the presence of the transition section 222 of the second water pipe 22, the water outlet at the upper end of the second water pipe 22 and the water outlet at the upper end of the first water pipe 21 are arranged adjacent to each other in the vertical direction along the length direction of the cooling wall body 10; the water inlet at the lower end of the first water pipe 21 and the water inlet at the lower end of the second water pipe 22 are arranged adjacent to each other in the width direction of the cooling wall body 10.

[0048] The water inlets of the first water pipe 21 and the second water pipe 22 in the cooling stave body 10 are adjacently arranged along the width direction of the cooling stave body 10 , and the water inlets of the water pipes can be arranged side by side at the bottom end of the cooling stave body 10 to enhance the cooling intensity at the lower edge position of the cooling stave body 10 .

[0049] At least one cooling strip 30 is installed on the hot surface of the cooling stave body 10 along the width direction of the cooling tube 40. In the present embodiment, the cooling strip 30 is in the shape of an elongated strip and is cast from copper. Preferably, a plurality of grooves are provided on the hot surface of the cooling stave body 10, and the cooling strips 30 are embedded in the grooves. The grooves are provided along the width direction of the cooling stave body 10.

[0050] According to one embodiment of the present utility model, Figure 3 As shown, a cooling pipe 40 is cast inside the cooling strip 30 . The cooling pipe 40 includes an inner cast section 41 extending along the length direction of the cooling strip 30 and an extension section 42 extending from the side of the cooling strip 30 . The extension section 42 passes through the cooling wall body 10 .

[0051] The water pipes in the cooling stave body 10 and the cooling pipes 40 in the cooling strips 30 are arranged in a crisscross pattern, and cooling water flows through both. The cooling water flowing in two different directions can ensure the uniformity of the cooling intensity of the combined cooling stave structure.

[0052] Specifically, the inner casting section 41 (middle portion) of the cooling pipe 40 is cast into the interior of the cooling bar 30, and the extension sections 42 at both ends thereof are bent and extend out of the cooling bar 30 and extend to the outside of the blast furnace shell 50; in this embodiment, the cooling pipe 40 is a copper water pipe.

[0053] According to one embodiment of the present utility model, Figures 1 to 4 As shown, the cooling strip 30 includes a first cooling strip 31 located at the upper end of the cooling wall body 10 and a second cooling strip 32 located at the lower end of the cooling wall body 10, the center line of the cooling pipe 40 in the first cooling strip 31 is located at the same height as the water outlet of the second water pipe 22, and the extension section 42 of the cooling pipe 40 in the first cooling strip 31 is located outside the transition section 222 of the second water pipe 22.

[0054] The first cooling strip 31 and the second cooling strip 32 are respectively located at the upper edge and the lower edge of the cooling wall body 10, and the two ends of the first cooling strip 31 are located at the two corners of the upper end of the cooling wall body 10. Therefore, the distribution positions of the first cooling strip 31 and the second cooling strip 32 can improve the cooling strength and slag hanging capacity of the ends of the cooling wall body 10, especially the upper and lower ends.

[0055] According to one embodiment of the present utility model, Figure 1As shown, the second cooling strip 32 is arranged adjacent to the water inlet of the second water pipe 22, and the extension section 42 of the cooling pipe 40 in the second cooling strip 32 is located on the outside of the longitudinal section 221 of the second water pipe 22, and a local bending section 223 is provided at the position of the longitudinal section 221 corresponding to the extension section 42 of the cooling pipe 40.

[0056] Since the density of the water pipes cast in the cooling stave body 10 is relatively large, and the water inlets of the water pipes are arranged side by side along the width direction of the cooling stave body 10, no space is reserved for the layout of the extension section 42 of the second cooling strip 32. Therefore, a local bending section 223 is provided on the second water pipe 22 to ensure that the cooling strip 30 can smoothly pass through the cooling stave body 10, avoiding interference between the second water pipe 22 and the cooling pipe 40.

[0057] According to one embodiment of the present utility model, Figure 1 As shown, the vertical distance between the center line of the extended section 42 of the cooling tube 40 in the first cooling strip 31 and / or the second cooling strip 32 and the center line of the adjacent first water tube 21 is A, and the vertical distance between the center lines of the two first water tubes 21 in the two water tube groups 20 is B, where A=B.

[0058] The length limit of the cooling pipe 40 in the first cooling strip 31 and the second cooling strip 32 can ensure that the extension length of the inner casting section 41 of the cooling pipe 40 can cover the position of the second water pipe 22 at the edges of both sides of the cooling wall body 10, thereby enhancing the edge cooling strength and slag hanging capacity of the cooling wall body 10, thereby extending its service life.

[0059] According to one embodiment of the present utility model, Figure 2 As shown, the cooling strip 30 further includes at least one third cooling strip 33 located between the first cooling strip 31 and the second cooling strip 32, and the extension section 42 of the cooling pipe 40 in the third cooling strip 33 is located between the first water pipe 21 and the second water pipe 22 in the water pipe group 20. The provision of multiple third cooling strips 33 can further enhance the cooling strength of the middle part of the cooling wall body 10. In this embodiment, as shown in FIG. Figure 2 As shown, two third cooling bars 33 are arranged between the first cooling bar 31 and the second cooling bar 32 .

[0060] According to one embodiment of the present invention, the vertical distance between two adjacent cooling strips 30 is no more than 600 mm.

[0061] The number of cooling strips 30 provided on the hot surface of the cooling wall body 10 can be determined according to actual needs, but the vertical distance between two adjacent cooling strips 30 should not be greater than 600 mm to avoid a decrease in cooling intensity due to sparse distribution of the cooling strips 30 .

[0062] According to an embodiment of the present invention, the side surface of the cooling strip 30 facing the inner side of the blast furnace is an arc-shaped surface parallel to the hot surface of the cooling wall body 10 .

[0063] The hot surface of the cooling wall body 10 is arc-shaped, and the hot surface of the cooling strip 30 is also set as an arc surface. The length of the hot surface of the cooling wall body 10 exposed at the center of the cooling strip 30 is the same as the length of the hot surface of the cooling wall body 10 exposed at both sides thereof, thereby improving the uniformity of cooling the hot surface of the cooling wall body 10.

[0064] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific embodiment of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A combined cooling wall structure, characterized in that: include: The cooling wall body is installed on the inner wall of the blast furnace shell; At least two water pipe groups are located in the cooling stave body, each of the water pipe groups includes a first water pipe and a second water pipe that are adjacently arranged, the first water pipe extends along the length direction of the cooling stave body, the second water pipe includes a longitudinal section extending along the length direction of the cooling stave body and a transition section connected to the longitudinal section, and the water outlet at the upper end of the second water pipe and the water outlet at the upper end of the first water pipe are adjacent to each other and arranged opposite to each other in the vertical direction of the cooling stave body; At least one cooling strip is arranged on the hot surface of the cooling wall body, the length direction of the cooling strip is perpendicular to the length direction of the first water pipe, and both ends of the cooling strip cover the first water pipe or the second water pipe at the outermost side of the cooling wall body.

2. The combined cooling wall structure according to claim 1, characterized in that: A cooling pipe is cast inside the cooling strip, and the cooling pipe comprises an inner casting section extending along the length direction of the cooling strip and an extension section extending from the side of the cooling strip, and the extension section passes through the cooling wall body.

3. The combined cooling wall structure according to claim 2, characterized in that: The water inlet at the lower end of the first water pipe and the water inlet at the lower end of the second water pipe are adjacently arranged along the width direction of the cooling wall body.

4. The combined cooling wall structure according to claim 2 or 3, characterized in that: Two opposite water pipe groups are arranged in the cooling wall body, the two first water pipes in the two water pipe groups are arranged adjacent to each other, and the two second water pipes are located on both sides of the cooling wall body and are arranged in a mirror-symmetrical manner.

5. The combined cooling wall structure according to claim 4, characterized in that: The cooling strips include a first cooling strip located at the upper end of the cooling wall body and a second cooling strip located at the lower end of the cooling wall body, the center line of the cooling pipe in the first cooling strip is located at the same height as the water outlet of the second water pipe, and the extension section of the cooling pipe in the first cooling strip is located outside the transition section of the second water pipe.

6. The combined cooling wall structure according to claim 5, characterized in that: The second cooling strip is arranged adjacent to the water inlet of the second water pipe, the extension section of the cooling pipe in the second cooling strip is located outside the longitudinal section of the second water pipe, and a local bending section is provided at the position of the longitudinal section corresponding to the extension section of the cooling pipe.

7. The combined cooling wall structure according to claim 5, characterized in that: The vertical distance between the center line of the extended section of the cooling pipe in the first cooling strip and / or the second cooling strip and the center line of the first water pipe adjacent thereto is A, and the vertical distance between the center lines of the two first water pipes in the two water pipe groups is B, wherein A=B.

8. The combined cooling wall structure according to claim 5, characterized in that: The cooling strip further comprises at least one third cooling strip located between the first cooling strip and the second cooling strip, and an extended section of the cooling tube in the third cooling strip is located between the first water tube and the second water tube in the water tube group.

9. The combined cooling wall structure according to claim 1, characterized in that: The vertical distance between two adjacent cooling strips is no more than 600 mm.

10. The combined cooling wall structure according to claim 1, characterized in that: The side surface of the cooling strip facing the inner side of the blast furnace is an arc-shaped surface parallel to the hot surface of the cooling wall body.

Images