Novel cooling wall for optimizing cooling blind area

Abstract

The utility model relates to a novel cooling wall for optimizing a cooling blind area, which comprises a cooling wall body and a plurality of dovetail grooves arranged on the hot end face of the cooling wall body in parallel, and the hot end face of the cooling wall body is further provided with an annular cooling pipe extending along the circumferential direction. The distance between the circumferential outer wall of the annular cooling pipe and the periphery of the cooling wall body is not larger than 10 cm, the dovetail grooves are evenly distributed in an inner ring of the annular cooling pipe, and the two ports of the annular cooling pipe are connected with a water inlet pipe and a water outlet pipe respectively. By setting the distance between the annular cooling pipe and the cooling wall body, the cooling effect on corners of the cooling wall is improved, cooling blind areas are reduced, local high-temperature damage of the corners is avoided, the service life of the cooling wall is prolonged, the annular cooling pipe is integrally arranged in the circumferential direction, a cooling water ring is formed, and the service life of the cooling wall is prolonged. And a good cooling effect is further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace cooling walls, in particular to a new type of cooling wall for optimizing cooling blind areas. Background Art

[0002] The cooling wall is the cooling equipment inside the blast furnace, placed between the furnace shell and the furnace lining, and is mainly made of cast iron, cast steel or copper. The cooling wall is an important water-cooled part of the blast furnace lining, installed in the furnace body, furnace waist, furnace belly, furnace hearth and other parts of the blast furnace. It not only withstands high temperatures, but also withstands the wear of furnace materials, erosion of slag and scouring of gas flow. It must have good comprehensive properties such as thermal strength, heat shock resistance, and resistance to rapid cooling and heating. The material and performance of the cooling wall determine its working life and even the life of the blast furnace body.

[0003] The installation structure of the blast furnace cooling wall is relatively complex. The cooling water pipes of the traditional blast furnace cooling wall mostly focus on cooling the main part of the cooling wall, resulting in certain cooling blind spots at the corners of the cooling wall. The cooling blind spots become vulnerable parts of the cooling wall. Once damaged, it takes a long time to replace the cooling wall, which causes huge losses to blast furnace production. Therefore, it is necessary to further optimize the cooling wall to reduce the cooling blind spots of the cooling wall. Utility Model Content

[0004] The utility model aims to optimize and reduce the cooling blind area of ​​the cooling wall, improve the heat conduction performance of the blast furnace cooling wall and prolong the service life of the cooling wall.

[0005] The utility model is realized through the following technical scheme: a new cooling wall for optimizing cooling blind spots, comprising a cooling wall body and a plurality of dovetail grooves arranged in parallel on the hot end face of the cooling wall body, characterized in that the hot end face of the cooling wall body is also provided with an annular cooling pipe extending in the circumferential direction, the circumferential outer wall of the annular cooling pipe is spaced from the periphery of the cooling wall body by no more than 10 cm, and the plurality of dovetail grooves are all arranged in the inner ring of the annular cooling pipe, and the two ends of the annular cooling pipe are respectively connected with a water inlet pipe and a water outlet pipe.

[0006] This solution sets a peripheral distance between the annular cooling pipe and the cooling wall body so that the annular cooling pipe can cool the edges and corners around the cooling wall body, thereby improving the cooling effect on the edges and corners of the cooling wall. The dovetail groove is used to embed furnace bricks, and the dovetail groove can also be further cooled by the annular cooling pipe to further improve the cooling effect. The annular cooling pipe extends circumferentially around the periphery, reducing the cooling blind area and increasing the service life of the cooling wall.

[0007] As an optimization, the water inlet pipe and the water outlet pipe extend toward the cold end face of the cooling stave body, and a through groove for the water inlet pipe and the water outlet pipe to pass through is provided on one side wall of the cooling stave body. This optimization scheme facilitates the installation of the water inlet pipe and the water outlet pipe by providing the through groove, does not affect the installation between the adjacent cooling stave copper tubes, and allows the water inlet pipe and the water outlet pipe to extend toward the outside of the cooling stave.

[0008] As an optimization, the water inlet pipe, the water outlet pipe and the annular cooling pipe are an integrally formed structure. This optimization solution is easy to process and improves the structural strength.

[0009] As an optimization, the annular cooling pipe is a rectangular annular structure. This optimization scheme makes the edges of the annular cooling pipe parallel to the edges of the cooling wall for uniform cooling.

[0010] As an optimization, the distance between the two sides of the dovetail groove and the outer wall of the annular cooling pipe is greater than 30 mm. This optimization scheme provides installation margin by setting the distance between the annular cooling pipe and the periphery of the dovetail groove, and does not affect the installation of furnace bricks.

[0011] The beneficial effects of the utility model are as follows: by setting an annular cooling pipe no more than 10 cm away from the edge of the cooling wall, the cooling effect on the corners of the cooling wall is improved, the cooling blind area is reduced, and local high temperature damage at the corners is avoided, thereby extending the service life of the cooling wall. In addition, the annular cooling pipe is arranged along the circumferential direction as a whole to form a cooling water ring, and the dovetail groove is not provided in the cooling water ring, further ensuring a good cooling effect. The water inlet pipe, the water outlet pipe and the annular cooling pipe of this solution are an integrated structure, which is easy to process and improves the structural strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the cooling wall body structure;

[0013] Figure 2 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0014] Figure 3 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0015] As shown in the figure:

[0016] 1. Cooling wall body, 2. Annular cooling pipe, 3. Water inlet pipe, 4. Water outlet pipe, 5. Through groove, 6. Dovetail groove. DETAILED DESCRIPTION

[0017] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0018] like Figures 1 to 3As shown, a new type of cooling wall for optimizing cooling blind spots includes a cooling wall body 1 and a plurality of dovetail grooves 6 structures arranged in parallel on the hot end face of the cooling wall body 1. The cooling wall body 1 is a rectangular structure, which is placed between the furnace shell and the furnace lining. The side of the cooling wall body 1 facing the furnace shell is the cold end face, and the side of the cooling wall body 1 facing the furnace lining is the hot end face. A plurality of raised bars are evenly distributed in parallel on the hot end face, and the dovetail grooves 6 structures are formed between adjacent raised bars for inlaying furnace bricks.

[0019] The hot end face of the cooling stave body 1 is provided with an annular cooling pipe 2 extending in the circumferential direction, and the annular cooling pipe 2 is a rectangular annular structure. The two ports of the annular cooling pipe 2 are arranged opposite to each other on the same side, and the two ports of the annular cooling pipe are respectively connected to the water inlet pipe 3 and the water outlet pipe 4, and the water inlet pipe and the water outlet pipe extend toward the cold end face of the cooling stave body. In this embodiment, the water inlet pipe 3 and the water outlet pipe 4 are perpendicular to the annular cooling pipe 2, and the extension directions of the water inlet pipe and the water outlet pipe are the same. The corners of the annular cooling pipe 2, as well as the water inlet pipe, the water outlet pipe and the annular cooling pipe are all 90-degree arc transitions. The water inlet pipe 3, the water outlet pipe 4 and the annular cooling pipe 2 are an integrally formed structure. In this embodiment, the water inlet pipe, the water outlet pipe and the annular cooling pipe are formed by bending copper pipes as a whole.

[0020] The circumferential outer wall of the annular cooling pipe 2 is spaced from the periphery of the cooling wall body 1 by no more than 10 cm to ensure good cooling of the edges and corners of the cooling wall. The multiple dovetail grooves 6 are located in the inner circle of the annular cooling pipe 2, and the distance between the two sides of the dovetail groove and the outer wall of the annular cooling pipe is greater than 30 mm. The outer diameter of the annular cooling pipe in this embodiment is not greater than the raised height of the raised strip, which is convenient for installing furnace bricks.

[0021] A through groove 5 for the water inlet pipe 3 and the water outlet pipe 4 to pass through is provided on one side wall of the cooling stave body 1. The two ends of the through groove 5 are respectively connected to the hot end face and the cold end face of the cooling stave. The depth of the through groove 5 in this embodiment is not less than the diameter of the water inlet pipe and the water outlet pipe, so that the water inlet pipe and the water outlet pipe can be completely embedded in the through groove to avoid gaps between adjacent cooling stave bodies.

[0022] The cold end face of the cooling stave body 1 of this embodiment is installed on the furnace shell of the blast furnace. After the cooling stave body is installed, the annular cooling pipe 2 is installed on the hot end face of the cooling stave body. The water inlet pipe 3 and the water outlet pipe 4 penetrate into one side of the cold end face of the cooling stave body from the through groove 5 of the cooling stave body. Through holes are opened on the furnace shell at positions corresponding to the water inlet pipe and the water outlet pipe. The water inlet pipe and the water outlet pipe extend to the outside of the furnace shell through the through holes to connect to the cooling water supply pipeline.

[0023] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A novel cooling wall for optimizing cooling blind areas, comprising a cooling wall body (1) and a plurality of dovetail grooves (6) arranged in parallel on a hot end surface of the cooling wall body, characterized in that: The hot end surface of the cooling wall body (1) is also provided with an annular cooling pipe (2) extending in the circumferential direction, the circumferential outer wall of the annular cooling pipe (2) and the peripheral distance between the cooling wall body (1) is not greater than 10 centimeters, and the multiple dovetail grooves are all arranged in the inner circle of the annular cooling pipe (2), and the two ends of the annular cooling pipe (2) are respectively connected to a water inlet pipe (3) and a water outlet pipe (4).

2. A novel cooling wall for optimizing cooling blind area according to claim 1, characterized in that: The water inlet pipe and the water outlet pipe extend in a direction close to the cold end surface of the cooling stave body, and a through groove (5) for the water inlet pipe and the water outlet pipe to pass through is provided on one side wall of the cooling stave body (1).

3. A novel cooling wall for optimizing cooling blind area according to claim 1, characterized in that: The water inlet pipe (3), the water outlet pipe (4) and the annular cooling pipe (2) are an integrally formed structure.

4. The novel cooling wall for optimizing cooling blind area according to claim 1 is characterized in that: The annular cooling tube (2) is a rectangular annular structure.

5. The novel cooling wall for optimizing cooling blind area according to claim 1 is characterized in that: The distance between the two sides of the dovetail groove and the outer wall of the annular cooling pipe is greater than 30 mm.

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