Cooling structure for blast furnace cooling wall

Abstract

The utility model relates to the technical field of blast furnace cooling, and provides a cooling structure for a blast furnace cooling wall, which comprises a first cooling layer and a second cooling layer, the first cooling layer comprises multiple vertical pipes and connecting pieces, the multiple vertical pipes are arranged at intervals in the direction perpendicular to the axes of the vertical pipes, and the connecting pieces are connected to the vertical pipes; the second cooling layer comprises a coiled pipe, and the coiled pipe is detachably connected with the connecting piece; the vertical pipe and the coiled pipe are elliptical pipes; and the long axes of the vertical pipe and the coiled pipe are parallel to the furnace wall of the blast furnace. The blast furnace cooling structure has the effect of improving the problems that an existing blast furnace cooling structure is poor in cooling effect and short in service life.

Description

Technical Field

[0001] The present application relates to the field of blast furnace cooling technology, and in particular to a cooling structure for a blast furnace cooling wall. Background Art

[0002] Blast furnaces need to be cooled during use. Existing blast furnace cooling structures mostly use round seamless steel pipes for heat dissipation of the blast furnace cooling wall.

[0003] However, circular cooling water pipes have a smaller heat dissipation area, resulting in poor cooling performance. Furthermore, due to the circular cross-section of the seamless circular cooling water pipe, the internal pressure strength is relatively low, making it prone to rupture or deformation in high-temperature and high-pressure environments. This, in turn, shortens the life of the cooling structure and reduces maintenance cycles. Utility Model Content

[0004] In order to improve the problems of poor cooling effect and short service life of existing blast furnace cooling structures, the present application provides a cooling structure for a blast furnace cooling wall.

[0005] The present application provides a cooling structure for a blast furnace cooling stave adopting the following technical solution:

[0006] A cooling structure for a blast furnace cooling wall comprises a first cooling layer and a second cooling layer; the first cooling layer comprises a vertical pipe and a connecting piece, wherein a plurality of vertical pipes are provided and the plurality of vertical pipes are arranged at intervals in a direction perpendicular to the vertical pipes' own axes, and the connecting piece is connected to the vertical pipe; the second cooling layer comprises a serpentine pipe, and the serpentine pipe is detachably connected to the connecting piece; the vertical pipe and the serpentine pipe are both elliptical pipes; and the long axes of the vertical pipe and the serpentine pipe are both parallel to the furnace wall of the blast furnace.

[0007] By adopting the above technical solution, when installing the cooling structure, the first cooling layer connected to the connector is first installed on the blast furnace, and then the serpentine pipe is connected to the first installation layer through the connector to form a second installation layer. Compared with conventional circular cooling pipes, elliptical pipes can expand the area of ​​the heating surface of the cooling pipe, more effectively absorb and dissipate heat, thereby improving the cooling efficiency. In addition, the elliptical cross-sectional shape can provide a larger cross-sectional area, making the water pipe more stable and reliable in an environment with high temperature and high pressure. Moreover, compared with circular pipes, the resistance generated when the fluid flows inside the elliptical pipe is smaller, which can improve the flow efficiency of the fluid, help to increase the flow rate and flow rate of the cooling medium, and further enhance the cooling effect.

[0008] Optionally, the serpentine tube includes multiple straight tube portions and multiple curved portions, and the curved portions are used to connect adjacent straight tube portions; the connecting piece is provided with a through-hole for the straight tube portion to pass through, and the surface of the connecting piece is provided with an insertion port, which passes through the cavity wall of the through-hole, and the width of the insertion port is smaller than the long axis length of the straight tube portion.

[0009] By adopting the above technical solution, the detachable cooperation between the serpentine tube and the connecting piece is achieved through the cooperation of the straight tube portion, the insertion port and the penetration cavity, which has a simple structure and is easy to install.

[0010] Optionally, a side wall of the connecting piece is provided with a snap-in groove for the vertical pipe to be snapped into, and the snap-in groove is extended along the length direction of the vertical pipe.

[0011] By adopting the above technical solution, the vertical pipe and the clamping groove are matched to make the connection between the connector and the vertical pipe detachable, which makes it easy to flexibly set the position of the connector according to the shape and specifications of the serpentine pipe, thereby improving the flexibility of use of the cooling structure.

[0012] Optionally, a reinforcing screw hole is formed through the side wall of the connecting piece, and the reinforcing screw hole passes through the inner wall of the insertion port; the connecting piece is threadedly connected to a reinforcing screw rod through the reinforcing screw hole; and the straight tube portion is located between the reinforcing screw rod and the vertical tube.

[0013] By adopting this technical solution, after installing the cooling structure, the reinforcing screws are screwed into the reinforcing screw holes, connecting the parts of the connector located on both sides of the insertion opening. This not only ensures the structural strength of the connector and reduces damage to the connector under long-term stress, but also forms a barrier at the insertion opening, reducing the risk of the straight pipe portion being pulled out of the insertion cavity.

[0014] Optionally, both the upper and lower surfaces of the connecting piece are provided with a socket, a limiting rod is inserted into the socket, a connecting rod is provided at the end of the limiting rod, and a semi-cylinder is provided at the end of the connecting rod; the planar side wall of the semi-cylinder corresponding to the upper surface and the planar side wall of the semi-cylinder corresponding to the lower surface abut against each other to form a complete connecting screw, and the connecting screw is threadedly connected with a connecting nut.

[0015] By adopting the above technical solution, after completing the installation of the serpentine tube, the limit rod is inserted into the socket, and the semi-cylinder corresponding to the upper surface and the semi-cylinder corresponding to the lower surface are abutted against each other, and then the connecting nut is screwed onto the connecting screw formed by the two semi-cylinders abutting each other, thereby ensuring the structural strength of the connecting piece on the one hand and reducing the risk of the serpentine tube falling out of the penetration hole on the other hand.

[0016] Optionally, the connecting member is a rectangular block, and the upper surface and the lower surface of the connecting member are both arranged horizontally.

[0017] By adopting the above technical solution, a larger abutment area is provided between the connecting rod and the connecting piece, thereby improving the installation stability of the limiting rod and the connecting rod.

[0018] Optionally, the semi-cylinder corresponding to the upper surface is magnetically coupled with the semi-cylinder corresponding to the lower surface.

[0019] By adopting the above technical solution, the two semi-cylinders are magnetically connected after abutting each other, reducing the possibility of relative slippage between the two and facilitating the installation of the connecting nut.

[0020] Optionally, the end of the semi-cylinder away from the connecting rod is arranged in a pointed shape.

[0021] By adopting the above technical solution, the end of the semi-cylinder with a pointed shape is used to guide the connecting nut, which further facilitates the installation of the connecting nut.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. By setting the vertical tube as an elliptical tube and the straight tube part of the serpentine tube as an elliptical tube, and connecting the first cooling layer and the second cooling layer detachably through a connector, the problems of poor cooling effect and short service life of the existing blast furnace cooling structure are improved;

[0024] 2. By making the connector and the vertical pipe detachable, the flexibility of the cooling structure is improved;

[0025] 3. By setting a limit rod and a connecting rod, and setting a semi-cylinder at the end of the connecting rod, the two semi-cylinders abut each other to form a complete connecting screw, and the connecting screw is threadedly connected to the connecting nut to form a connection on both sides of the insertion port of the connecting piece. While enhancing the structural strength of the connecting piece, the risk of the serpentine tube escaping from the penetration cavity is reduced, thereby improving the connection stability between the first cooling layer and the second cooling layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram for showing the arrangement positions of the first cooling layer and the second cooling layer in Example 1.

[0027] Figure 2 It is a schematic diagram for showing the structure of the first cooling layer and the second cooling layer connected by a connecting piece in Example 1.

[0028] Figure 3 It is a structural diagram for showing a card slot.

[0029] Figure 4It is a structural diagram for showing the penetration cavity.

[0030] Figure 5 Schematic diagram of the structure of Example 2 of the present application.

[0031] Figure 6 It is a schematic diagram for showing the structure of the limiting rod and the connecting rod in Example 2.

[0032] Explanation of the accompanying drawings: 1. First cooling layer; 11. Vertical pipe; 12. Connecting piece; 121. Snap-fit ​​groove; 122. Penetrating cavity; 123. Insertion port; 124. Reinforcement screw hole; 125. Insertion hole; 126. Limiting rod; 127. Connecting rod; 128. Semi-cylinder; 129. Connecting nut; 13. Reinforcement screw; 2. Second cooling layer; 21. Serpentine tube; 211. Straight tube portion; 212. Bent portion. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-6 This application is described in further detail.

[0034] The embodiment of the present application discloses a cooling structure for a blast furnace cooling stave.

[0035] Example 1

[0036] Reference Figure 1 and Figure 2 A cooling structure for a blast furnace stave includes a first cooling layer 1 and a second cooling layer 2. The first cooling layer 1 includes a plurality of vertical pipes 11 and a connector 12. The vertical pipes 11 are provided in a plurality of locations, each extending along the height of the blast furnace. The vertical pipes 11 are provided in a plurality of locations, each spaced apart and arranged perpendicular to the vertical pipes 11. The connector 12 is connected to the vertical pipes 11.

[0037] The second cooling layer 2 includes a serpentine tube 21, which is detachably connected to the connector 12. The vertical tube 11 and the serpentine tube 21 are both elliptical tubes, and the long axes of the vertical tube 11 and the serpentine tube 21 are parallel to the furnace wall of the blast furnace. When installing the cooling structure, the first cooling layer 1 connected with the connector 12 is first installed in the blast furnace, and then the serpentine tube 21 is connected to the first installation layer through the connector 12 to form the second installation layer. Compared to conventional circular cooling pipes, the elliptical pipe can expand the area of ​​the heating surface of the cooling pipe, more effectively absorb and dissipate heat, thereby improving cooling efficiency. In addition, the elliptical cross-sectional shape can provide a larger cross-sectional area, making the water pipe more stable and reliable under high temperature and high pressure environments. Moreover, compared to circular pipes, the resistance generated when the fluid flows inside the elliptical pipe is small, which can improve the flow efficiency of the fluid, help to improve the flow rate and flow of the cooling medium, and further enhance the cooling effect.

[0038] The serpentine tube 21 includes a plurality of straight tube portions 211 and a plurality of curved portions 212 . The curved portions 212 are used to connect adjacent straight tube portions 211 .

[0039] Reference Figure 2 and Figure 3 Specifically, a snap-in groove 121 for the vertical pipe 11 to be inserted is provided at the middle position of the connector 12, and the snap-in groove 121 is extended along the length direction of the vertical pipe 11. A through-hole 122 is provided through the connector 12 for the straight pipe portion 211 to pass through. An insertion port 123 is provided on the surface of the connector 12, and the insertion port 123 passes through the cavity wall of the through-hole 122, and the width of the insertion port 123 is less than the long axis length of the straight pipe portion 211. When installing the cooling structure, first insert the vertical pipe 11 into the snap-in groove 121 from the side close to the blast furnace, then install the vertical pipe 11 connected with the connector 12 in the blast furnace, and finally insert the straight pipe portion 211 of the core shooting tube into the through-hole 122 from the insertion port 123, thereby realizing the detachable connection between the second cooling layer 2 and the first cooling layer 1, which is convenient for the installation and maintenance of the cooling structure.

[0040] Reference Figure 4 Furthermore, a reinforcing screw hole 124 is provided through the side wall of the connector 12. The reinforcing screw hole 124 extends along the length direction of the vertical pipe 11, and the reinforcing screw hole 124 passes through the inner wall of the insertion port 123. The connector 12 is threadedly connected to the reinforcing screw 13 through the reinforcing screw hole 124, and the straight tube portion 211 is located between the reinforcing screw 13 and the vertical pipe 11. After the cooling structure is installed, the reinforcing screw 13 is screwed into the reinforcing screw hole 124, and the reinforcing screw 13 is used to form a connection between the parts of the connector 12 located on both sides of the insertion port 123. On the one hand, the structural strength of the connector 12 is ensured, and damage to the connector 12 under long-term stress is reduced; on the other hand, a barrier is formed at the position of the insertion port 123 to reduce the risk of the straight tube portion 211 escaping from the penetration cavity 122.

[0041] The implementation principle of Example 1 is as follows: when installing the cooling structure, first connect the connector 12 to the vertical pipe 11 through the snap-in groove 121, and then install the vertical pipe 11 connected with the connector 12 on the outer wall of the blast furnace to complete the installation of the first cooling layer 1; then connect the serpentine pipe 21 to the first installation layer through the connector 12 to form a second installation layer. Compared with conventional circular cooling pipes, elliptical pipes can expand the area of ​​the heating surface of the cooling pipe, absorb and dissipate heat more effectively, and thus improve the cooling efficiency. In addition, the elliptical cross-sectional shape can provide a larger cross-sectional area, making the water pipe more stable and reliable in an environment with high temperature and high pressure. Moreover, compared with circular pipes, the resistance generated when the fluid flows inside the elliptical pipe is smaller, which can improve the flow efficiency of the fluid, help to increase the flow rate and flow rate of the cooling medium, and further enhance the cooling effect.

[0042] Example 2

[0043] Reference Figure 5 and Figure 6 The difference between this embodiment and embodiment 1 is that the reinforcing screw hole 124 and the reinforcing screw rod 13 described in embodiment 1 are not provided in this embodiment.

[0044] In this embodiment, the connecting member 12 is a rectangular block structure, and the upper surface and the lower surface of the connecting member 12 are both arranged horizontally.

[0045] Connector 12 has sockets 125 defined on both its upper and lower surfaces. A stopper rod 126 is inserted into these sockets, extending along the length of vertical tube 11. A connecting rod 127 is integrally formed at the end of the stopper tube, which extends away from the socket 125. This connecting rod 127 extends away from the blast furnace and is bent at its end. A semi-cylinder 128 is integrally formed at the end of the connecting rod 127. The planar sidewalls of semi-cylinder 128 on the upper surface and on the lower surface abut against each other to form a complete connecting screw. This connecting screw is then threadedly connected to a connecting nut 129.

[0046] After completing the installation of the serpentine tube 21, insert the limit rod 126 into the socket 125, and make the semi-cylinder 128 corresponding to the upper surface abut against the semi-cylinder 128 corresponding to the lower surface, and then screw the connecting nut 129 onto the connecting screw formed by the two semi-cylinders 128 abutting against each other, thereby ensuring the structural strength of the connecting piece 12 on the one hand, and reducing the risk of the serpentine tube 21 falling out of the through-hole on the other hand.

[0047] Furthermore, the semi-cylinders 128 corresponding to the upper surface and the semi-cylinders 128 corresponding to the lower surface are magnetically coupled to improve the convenience of installation and facilitate the abutment assembly of the two semi-cylinders 128.

[0048] Furthermore, the end of the semi-cylinder 128 away from the connecting rod 127 is configured to be pointed to facilitate the installation of the connecting nut 129 .

[0049] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A cooling structure for a blast furnace cooling stave, characterized in that: The invention comprises a first cooling layer (1) and a second cooling layer (2); the first cooling layer (1) comprises a vertical pipe (11) and a connecting piece (12); the vertical pipe (11) is provided with a plurality of vertical pipes (11), the plurality of vertical pipes (11) are arranged at intervals in a direction perpendicular to the axis thereof, and the connecting piece (12) is connected to the vertical pipe (11); the second cooling layer (2) comprises a serpentine pipe (21), the serpentine pipe (21) and the connecting piece (12) are detachably connected; the vertical pipe (11) and the serpentine pipe (21) are both elliptical pipes; the long axes of the vertical pipe (11) and the serpentine pipe (21) are both parallel to the furnace wall of the blast furnace.

2. A cooling structure for a blast furnace cooling stave according to claim 1, characterized in that: The serpentine tube (21) comprises a plurality of straight tube portions (211) and a plurality of curved portions (212), wherein the curved portions (212) are used to connect adjacent straight tube portions (211); the connecting piece (12) is provided with a through-hole (122) for the straight tube portion (211) to pass through; an insertion port (123) is provided on the surface of the connecting piece (12), and the insertion port (123) passes through the cavity wall of the through-hole (122); the width of the insertion port (123) is smaller than the long axis length of the straight tube portion (211).

3. The cooling structure for a blast furnace cooling stave according to claim 2, characterized in that: A clamping groove (121) for the vertical pipe (11) to be clamped into is provided on the side wall of the connecting piece (12), and the clamping groove (121) is extended along the length direction of the vertical pipe (11).

4. A cooling structure for a blast furnace cooling stave according to claim 2 or 3, characterized in that: A reinforcing screw hole (124) is formed through the side wall of the connecting piece (12), and the reinforcing screw hole (124) passes through the inner wall of the insertion opening (123); the connecting piece (12) is threadedly connected to a reinforcing screw rod (13) through the reinforcing screw hole (124); and the straight pipe portion (211) is located between the reinforcing screw rod (13) and the vertical pipe (11).

5. A cooling structure for a blast furnace cooling stave according to claim 2 or 3, characterized in that: The upper surface and the lower surface of the connecting member (12) are both provided with a socket (125), a limiting rod (126) is inserted into the socket (125), a connecting rod (127) is provided at the end of the limiting rod (126), and a semi-cylinder (128) is provided at the end of the connecting rod (127); the plane side wall of the semi-cylinder (128) corresponding to the upper surface and the plane side wall of the semi-cylinder (128) corresponding to the lower surface abut against each other to form a complete connecting screw, and the connecting screw is threadedly connected to a connecting nut (129).

6. The cooling structure for a blast furnace cooling stave according to claim 5, characterized in that: The connecting member (12) is a rectangular block, and the upper surface and the lower surface of the connecting member (12) are both arranged horizontally.

7. The cooling structure for a blast furnace cooling stave according to claim 5, characterized in that: The semi-cylinder (128) corresponding to the upper surface and the semi-cylinder (128) corresponding to the lower surface are magnetically coupled.

8. The cooling structure for a blast furnace cooling stave according to claim 7, characterized in that: The end of the semi-cylinder (128) away from the connecting rod (127) is arranged in a pointed shape.

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