A blast furnace sleeve protection device

Abstract

This utility model discloses a protective device for a blast furnace sleeve, including a protective layer fixed on the sleeve and a connecting mesh composed of several sets of connecting ropes. The connecting mesh is sleeved on the outer ring surface and both ends of the sleeve. The connecting mesh is partially embedded inside the protective layer. The connecting mesh formed by the copper wire part and the copper rod part can fit the sleeve to a greater extent. Furthermore, by embedding the copper wire part inside the protective layer, the copper wire can contact the protective layer with a larger contact surface, reducing the risk of separation between the sleeve and the protective layer, thereby extending the service life of the sleeve protective layer.

Description

Technical Field

[0001] This invention relates to the field of blast furnace jackets, and in particular to a blast furnace jacket protection device. Background Technology

[0002] The damage to the blast furnace tuyeres sleeve is generally divided into two types: burn-off and wear. Burn-off is caused by the molten iron burning off the outer side of the blast furnace tuyeres sleeve due to the inertness of the blast furnace hearth. Wear is caused by the instability of the blast furnace slag and the poor quality of the sleeve, which leads to the end of the sleeve being worn through by the slag. Improving the quality of the sleeve has basically eliminated wear. Therefore, the most common way to damage the sleeve is burn-off.

[0003] The existing protective layer for the small sleeve is usually cast directly to form a covering on the surface of the small sleeve. However, the stability between the protective layer and the small sleeve is somewhat lacking. The protective layer is prone to cracking due to collisions with blast furnace slag. This situation may lead to the protective layer and the small sleeve separating during use inside the blast furnace, thereby reducing the service life of the small sleeve protective layer. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is that the protective layer is prone to cracking due to collisions with blast furnace slag. This situation may lead to the risk of the protective layer and the small sleeve separating during the use of the small sleeve inside the blast furnace.

[0005] The above-mentioned technical problems are solved by the following technical solution: The present invention proposes a blast furnace sleeve protection device, which includes a protective layer fixed on the sleeve, a sleeve mesh connected by several sets of sleeve ropes, the sleeve mesh being sleeved on the outer ring surface and both ends of the sleeve, and the sleeve mesh being partially embedded inside the protective layer.

[0006] In a preferred embodiment of the blast furnace sleeve protection device of the present invention: the two ends of the sleeve mesh form a ring and abut against the end wall of the sleeve.

[0007] In a preferred embodiment of the blast furnace sleeve protection device of the present invention: a fixed knot is formed between the connected sleeve ropes.

[0008] In a preferred embodiment of the blast furnace sleeve protection device of the present invention: the sleeve rope includes a copper wire part and a copper rod part embedded in the protective layer, the copper wire part includes several sets of copper wires, and the copper wire part is embedded in the protective layer.

[0009] In a preferred embodiment of the blast furnace sleeve protection device of the present invention: the copper rod is bent and abuts against the outer peripheral sidewall of the sleeve and the air inlet end face.

[0010] In a preferred embodiment of the blast furnace sleeve protection device of the present invention: several groups of copper rods are fixed to each other by welding.

[0011] In a preferred embodiment of the blast furnace sleeve protection device of the present invention: several sets of copper wires between adjacent sets of knots on the sleeve rope are spaced apart from each other.

[0012] In a preferred embodiment of the blast furnace sleeve protection device of the present invention: the protective layer is sleeved on the end wall of the side where the sleeve enters the blast furnace interior area and extends into the area inside the blast furnace where the sleeve is located.

[0013] In a preferred embodiment of the blast furnace sleeve protection device of the present invention: the sleeve mesh is disposed on the circumferential sidewall of the protective layer and in the middle of the area where the sleeve enters the blast furnace interior.

[0014] In a preferred embodiment of the blast furnace sleeve protection device of the present invention: the protective layer and the copper rod are respectively in contact with the two ends of the sleeve.

[0015] The beneficial effects of the present invention are as follows: the mesh formed by the copper wire part and the copper rod part can fit the small sleeve to a greater extent, and by embedding the copper wire part into the interior of the protective layer, the copper wire can contact the protective layer with a larger contact surface, reducing the risk of separation between the small sleeve and the protective layer, thereby extending the service life of the small sleeve protective layer. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Wherein:

[0017] Figure 1 This diagram shows the structure of the protective layer and the connecting mesh installed on the small sleeve in the blast furnace small sleeve protection device;

[0018] Figure 2 This diagram shows a schematic of the structure of the sleeve mesh embedded inside the protective layer in the blast furnace sleeve protection device;

[0019] Figure 3 This diagram shows the protective layer, the connecting mesh, and the disassembly of the small sleeve in the blast furnace sleeve protection device.

[0020] Figure 4 A schematic diagram of the mesh structure in the blast furnace sleeve protection device is shown.

[0021] Figure 5 A detailed structural schematic diagram of the copper wire section of the sleeve mesh in the blast furnace sleeve protection device is shown.

[0022] Figure 6 A schematic diagram showing the distribution of copper wires in the copper wire section of the blast furnace sleeve protection device is shown. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0024] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0025] Reference Figures 1-6 This embodiment provides a blast furnace sleeve protection device, including a protective layer 1 fixed to the sleeve. The protective layer 1 is made of heat-insulating material cast in a mold. The sleeve is inserted into the blast furnace. By introducing airflow to stabilize the airflow inside the blast furnace, air is blown into the blast furnace to achieve blast furnace heating. The sleeve penetrates the blast furnace through the insertion joint, allowing air to enter from the outside. The sleeve needs to maintain a certain high temperature resistance inside the blast furnace, so a protective layer 1 is added to the surface of the sleeve. The protective layer 1 is sleeved on the area where the sleeve enters the blast furnace, thereby reducing the direct temperature difference between the blast furnace and the sleeve. A sleeve mesh 2, consisting of several sets of sleeve ropes 2, is also included. The protective layer 1 is formed by connecting the two sleeves. The sleeve mesh 2 is sleeved on the outer ring surface and both ends of the small sleeve. The sleeve mesh 2 is partially embedded inside the protective layer 1. Specifically, depending on the area inside the blast furnace where the small sleeve is located during operation, the sleeve mesh 2 is sleeved on the outer surface of the small sleeve when the protective layer 1 is poured. By further pouring the protective layer 1 onto the small sleeve and the sleeve mesh 2, the protective layer 1 is sleeved on the small sleeve and the sleeve mesh 2, thereby realizing the sleeve mesh 2, the small sleeve and the protective layer 1 as an integrated structure. This can prevent the risk of the protective layer 1 directly separating from the blast furnace small sleeve when the high temperature iron slag inside the blast furnace damages the outer surface of the blast furnace small sleeve during use.

[0026] Preferably, the connecting net 2 is composed of several sets of connecting ropes 21 connected together. The connecting ropes 21 are made of copper. The connecting ropes can be integrally welded or bound together.

[0027] Preferably, the two ends of the socket mesh 2 form a ring that abuts against the end wall of the small sleeve, thereby better aligning the socket mesh 2 with the small sleeve to prevent the risk of separation between the socket mesh 2 and the small sleeve.

[0028] Furthermore, a fixed knot a is formed between the connected loops 21. The knot formed between the loops 21 can divide the loops 21 into multiple segments, allowing the small loop to be wrapped with more stress points.

[0029] Furthermore, the rope 21 includes a copper wire portion 211 and a copper rod portion 212 embedded in the protective layer 1. The copper wire portion 211 includes several sets of copper wires 2111, and the thickness of the copper wires 2111 needs to be selected to ensure that they can withstand high temperatures.

[0030] Note that the copper wire 2111 is thinner than the copper rod 211. The contact area between multiple sets of copper wires 2111 can be larger than that of the protective layer 1. Furthermore, multiple sets of copper wires 2111 allow multiple sets of copper wires to contact the protective layer 1 simultaneously. Since the protective layer 1 itself may experience uneven grouting during the casting process, and may loosen due to heating or small particle impacts at various locations inside the blast furnace, multiple sets of copper wires 2111 ensure that if one set of copper wires 2111 becomes loose, the remaining copper wires 2111 can still maintain contact. It can still be connected to the cast protective layer 1 to maintain stability with the protective layer 1. Since the protective layer 1 is directly cast on the surface of the small sleeve during casting, the protective layer 1 and the surface of the small sleeve will be subjected to planar force, resulting in poor protection and a risk of the entire protective layer 1 detaching from the small sleeve. Therefore, the sleeve mesh 2 is used, and the part of the sleeve mesh 2 that contacts the protective layer 1 is made of copper wire 2111, which can increase the contact area and stress point between the sleeve mesh 2 and the protective layer 1. When the sleeve mesh 2 is fully sleeved on the surface of the small sleeve, it can better prevent the protective layer 1 from falling off.

[0031] Furthermore, the copper rod portion 212 is bent and abuts against the outer peripheral sidewall of the small sleeve and the air inlet end face, which can more stably fit onto the small sleeve.

[0032] Furthermore, several groups of copper rods 212 are welded together to form a fixed connection. Welding between the copper rods 212 can enhance stability and prevent local deformation of the copper rods 212, which could lead to loosening between the copper rods 212 as a whole and the sleeve.

[0033] Furthermore, several sets of copper wires 2111 between adjacent sets of knots a on the loop 21 are spaced apart from each other. It is essential to avoid contact between copper wires 2111 and copper wires 2111. When copper wires 2111 and copper wires 2111 come into contact, it will reduce the contact area between the protective layer 1 and the copper wires 2111. When copper wires 2111 and copper wires 2111 do not come into contact, the force-bearing area of ​​the copper wires 2111 can be increased, and the contact with the protective layer 1 can be more stable.

[0034] Furthermore, the protective layer 1 is fitted onto the end wall of the small sleeve entering the blast furnace and extends into the area inside the blast furnace where the small sleeve is located, achieving complete coverage of the outer surface of the small sleeve. The sleeve mesh 2 is set on the circumferential side wall of the protective layer 1 and in the middle of the area extending into the blast furnace where the small sleeve enters. This can prevent one end face of the sleeve mesh 2 from directly contacting the small sleeve, thereby significantly reducing the contact area between the sleeve mesh 2 and the protective layer 1. It also avoids the sleeve mesh 2 from getting too close to the contact surface between the protective layer 1 and the molten slag inside the blast furnace, which would cause the sleeve mesh 2 to deform due to heat.

[0035] Furthermore, the protective layer 1 and the copper rod portion 212 respectively abut against the two ends of the small sleeve, thereby ensuring that while the protective layer 1 and the copper wire portion 211 are fixedly connected, the protective layer 1 is also cast onto the surface of the small sleeve, and the copper rod portion 212 is fixed to the other end of the small sleeve. The three of them abut against and fix the small sleeve, thereby not only forming a more secure fixation between the protective layer 1 and the small sleeve, but also greatly reducing the risk that the protective layer 1 may become disengaged from the small sleeve.

[0036] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A blast furnace sleeve protection device, characterized in that: include, Protective layer (1) is fixed on the small sleeve; The loop net (2) is made up of several sets of loop ropes (21) connected together. The loop net (2) is looped on the outer ring surface and both ends of the small loop. The socket mesh (2) is partially embedded inside the protective layer (1).

2. The blast furnace sleeve protection device according to claim 1, characterized in that: The two ends of the sleeve mesh (2) form a ring that abuts against the end wall of the small sleeve.

3. The blast furnace sleeve protection device according to claim 2, characterized in that: A fixed knot (a) is formed between the connected loops (21).

4. The blast furnace sleeve protection device according to claim 3, characterized in that: The rope (21) includes a copper wire part (211) embedded in the protective layer (1) and a copper rod part (212). The copper wire part (211) includes several sets of copper wires (2111). The copper wire portion (211) is embedded inside the protective layer (1).

5. The blast furnace sleeve protection device according to claim 4, characterized in that: The copper rod portion (212) is bent and abuts against the outer peripheral sidewall of the small sleeve and the air inlet end face.

6. The blast furnace sleeve protection device according to claim 5, characterized in that: Several groups of copper rods (212) are fixed to each other by welding.

7. The blast furnace sleeve protection device according to claim 1 or 6, characterized in that: The several sets of copper wires (2111) between two adjacent sets of knots (a) on the rope (21) are spaced apart from each other.

8. The blast furnace sleeve protection device according to claim 7, characterized in that: The protective layer (1) is fitted onto the end wall of the small sleeve entering the blast furnace interior area and extends into the area inside the blast furnace where the small sleeve is located.

9. The blast furnace sleeve protection device according to claim 8, characterized in that: The sleeve mesh (2) is set on the circumferential sidewall of the protective layer (1) and in the middle of the area extending into the blast furnace interior of the small sleeve.

10. The blast furnace sleeve protection device according to claim 9, characterized in that: The protective layer (1) and the copper rod part (212) respectively abut against the two ends of the small sleeve.

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