Water cooling device for slag runner of blast furnace casting house

Abstract

The utility model relates to the technical field of slag runner water cooling, in particular to a blast furnace casting house slag runner water cooling device which comprises a plurality of water cooling plates used for cooling the two side portions and the bottom of a slag runner in a water cooling mode. The water cooling plate comprises a shell, a cooling channel which is arranged in the shell and enables cooling water to flow back and forth in the shell, a water inlet communicated with one end of the cooling channel, and a water outlet communicated with the other end of the cooling channel. The plurality of water cooling plates are spliced and fixed together through connecting structures; the water-cooling plate has the beneficial effects that in actual use, the shell is attached to the side part and the bottom of the slag runner, namely, the two side parts and the bottom of the slag runner are cooled, so that the cooling effect of the water-cooling plate on the slag runner is ensured; meanwhile, the multiple water cooling plates are spliced together to form a pouring frame, pouring can be directly carried out on the water cooling plates to form the slag runner, the slag runner and the water cooling plates are tightly combined, heat conduction between the slag runner and the water cooling plates is facilitated, and the cooling effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of slag ditch water cooling, in particular to a slag ditch water cooling device for a blast furnace iron-making site. Background Art

[0002] As an indispensable part of the blast furnace ironmaking process, the slag ditch in the blast furnace tapping yard undertakes the important task of safely and efficiently exporting high-temperature molten slag from the blast furnace. With the continuous advancement of modern blast furnace technology and the increasing trend of large-scale production, the temperature inside the blast furnace continues to rise, which puts more stringent requirements on the refractory performance and cooling efficiency of the slag ditch. Although traditional slag ditch refractory materials meet the basic needs of blast furnace production to a certain extent, their service life and stability face severe challenges when facing higher temperature and more corrosive slag.

[0003] At present, the research and development of slag ditch refractory materials in blast furnace iron-making plants has become mature, and significant progress has been made in material selection, formula optimization and manufacturing process. However, from the perspective of refractory materials themselves, it is no longer possible to significantly extend the service life of slag ditch simply by improving material performance. Therefore, the industry has begun to focus on the innovation of slag ditch cooling technology, hoping to slow down the erosion rate by reducing the slag ditch temperature, thereby extending its service life.

[0004] As one of the important means of cooling the blast furnace slag ditch, water cooling technology has been widely used in recent years. However, there are still some problems that need to be solved in the actual application of the existing slag ditch water cooling device. First, the cooling part of the slag ditch by the water-cooling plate is relatively single, and it often only cools a specific area of ​​the slag ditch, resulting in an unsatisfactory overall cooling effect and unable to effectively inhibit the erosion of the slag ditch by the high-temperature molten slag. Secondly, the water-cooling plate is mostly installed on the slag ditch at a later stage. Due to factors such as installation accuracy, it is easy for the water-cooling plate and the slag ditch to be loosely combined, which in turn affects the heat conduction efficiency and reduces the cooling effect.

[0005] Therefore, a slag ditch water cooling device for a blast furnace iron-making site is needed to overcome the occurrence of the above-mentioned problems. Utility Model Content

[0006] In order to solve the above problems, the embodiment of the utility model provides a slag ditch water cooling device for a blast furnace iron-making yard, which achieves the purpose of solving the problems raised in the background technology.

[0007] In order to achieve the above object, the embodiment of the present utility model specifically adopts the following technical solutions: A water-cooling device for the slag groove in the blast furnace tapping yard, which is used to cool the slag groove by water cooling, includes a plurality of water-cooling plates for water-cooling and cooling the two side parts and the bottom of the slag groove; the water-cooling plate includes a housing, a cooling channel arranged inside the housing to make the cooling water flow reciprocally inside the housing, a water inlet communicated with one end of the cooling channel, and a water outlet communicated with the other end of the cooling channel; a plurality of the water-cooling plates are spliced and fixed together through a connecting structure; the connecting structure is composed of two mutually buckled blocks.

[0008] As a further improvement of the above technical solution:

[0009] A fastening bolt is threadedly connected to the block.

[0010] A water inlet pipe for communicating a plurality of water inlets and a water outlet pipe for connecting a plurality of water outlets are arranged on the water-cooling plate.

[0011] A protrusion is arranged on the inner side of the water-cooling plate.

[0012] An inclined groove is arranged on one side of the water-cooling plate.

[0013] The beneficial effects of the embodiment of the present utility model are as follows:

[0014] During actual use, the housing fits on the side part and the bottom of the slag groove, that is, the two side parts and the bottom of the slag groove are cooled, ensuring the cooling effect of the water-cooling plate on the slag groove; at the same time, after a plurality of water-cooling plates are spliced together, a casting frame is formed, and the slag groove can be directly cast on the water-cooling plate, making the slag groove and the water-cooling plate closely combined, facilitating the heat conduction between the slag groove and the water-cooling plate, and improving the cooling effect. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the present utility model;

[0016] Figure 2 is Figure 2 a schematic enlarged structural diagram of part A in

[0017] Figure 3 It is a schematic structural diagram of the water-cooling plate of the present utility model;

[0018] Figure 4 It is a schematic cross-sectional view of the water-cooling plate of the present utility model.

[0019] In the figure: 1. Water-cooling plate; 11. Housing; 12. Cooling channel; 13. Water inlet; 14. Water outlet; 2. Connecting structure; 21. Block; 22. Fastening bolt; 3. Water inlet pipe; 4. Water outlet pipe; 5. Protrusion; 6. Inclined groove. Detailed Embodiment

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention.

[0021] See Figures 1 to 4 , an embodiment of the present invention discloses a water-cooling device for a slag ditch in a blast furnace ironmaking yard, which is used to cool the slag ditch by water cooling. It includes a plurality of water-cooling plates 1 for water-cooling the two side parts and the bottom of the slag ditch.

[0022] The water-cooling plate 1 includes a "C"-shaped outer shell 11, a cooling channel 12 arranged inside the outer shell 11 to make the cooling water flow reciprocally inside the outer shell 11, a water inlet 13 connected to one end of the cooling channel 12, and a water outlet 14 connected to the other end of the cooling channel 12; the cooling water enters the cooling channel 12 through the water inlet 13 and then is discharged through the water outlet 14, so as to realize the circulation of the cooling water.

[0023] A plurality of water-cooling plates 1 are spliced and fixed together through a connecting structure 2.

[0024] The connecting structure 2 is composed of two mutually buckled blocks 21; a plurality of water-cooling plates 1 are fixed together through the connecting structure 2; the blocks 21 are fixed on the outer shell 11, and the water-cooling plates 1 are fixed through the blocks 21, so that the outer shells 11 can be closely attached together.

[0025] In actual use, the outer shell 11 is attached to the side and bottom of the slag ditch, that is, the two side parts and the bottom of the slag ditch are cooled, ensuring the cooling effect of the water-cooling plate 1 on the slag ditch; at the same time, after a plurality of water-cooling plates 1 are spliced together, a casting frame is formed, and the slag ditch can be directly cast on the water-cooling plates 1, so that the slag ditch and the water-cooling plates 1 are closely combined, facilitating heat conduction between the slag ditch and the water-cooling plates 1 and improving the cooling effect.

[0026] As a further explanation of this application:

[0027] A fastening bolt 22 is threadedly connected to the block 21. After the outer shells 11 are spliced through the blocks 21, the blocks 21 are secondarily fixed through the fastening bolts 22 to improve the stability of the connection part of the blocks 21.

[0028] The common fixing method usually directly uses bolts for fixing. However, in actual use, due to the high temperature at the slag ditch, the service life of the bolts is short. If only a single bolt is used for fixing, if the bolt fails due to fatigue and breaks, the outer shell 11 will directly separate, posing a great safety hazard. Therefore, in this application, the blocks 21 and the fastening bolts 22 are used in cooperation for fixing. Even if the fastening bolt 22 breaks, the outer shell 11 can still be ensured not to separate through the blocks 21.

[0029] As a further description of the present application:

[0030] A water inlet pipe 3 for connecting a plurality of water inlets 13 and a water outlet pipe 4 for connecting a plurality of water outlets 14 are provided on the water cooling plate 1, and the cooling water circulation of a plurality of water cooling plates 1 is realized through the water inlet pipe 3 and the water outlet pipe 4.

[0031] As a further description of the present application:

[0032] A protrusion 5 is provided on the inner side of the water cooling plate 1 to enhance the connection strength between the water cooling plate 1 and the slag groove; an inclined groove 6 is provided on one side of the water cooling plate 1, and during pouring, the pouring material can enter the joint between the water cooling plates 1 through the inclined groove 6.

[0033] It should be noted that in the description of the present utility model, the terms indicating directions or positional relationships such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0034] In addition, it should also be noted that in the description of the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0035] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, so that a process, article, or device / equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent in these processes, articles, or devices / equipment.

[0036] So far, the technical solutions of the present utility model have been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present utility model.

Claims

1. A slag ditch water cooling device for a blast furnace iron-making site, used for water cooling the slag ditch, characterized in that: It comprises a plurality of water cooling plates (1) for cooling the two sides and the bottom of the slag ditch with water; The water-cooling plate (1) comprises a shell (11), a cooling channel (12) arranged inside the shell (11) and allowing cooling water to reciprocate inside the shell (11), a water inlet (13) connected to one end of the cooling channel (12), and a water outlet (14) connected to the other end of the cooling channel (12); The plurality of water cooling plates (1) are spliced ​​and fixed together via a connecting structure (2); The connection structure (2) consists of two mutually buckled blocks (21).

2. The slag ditch water cooling device for a blast furnace iron-making site according to claim 1, characterized in that: A fastening bolt (22) is threadedly connected to the clamping block (21).

3. The slag ditch water cooling device for a blast furnace iron-making site according to claim 1, characterized in that: The water cooling plate (1) is provided with a water inlet pipe (3) for connecting a plurality of water inlets (13) and a water outlet pipe (4) for connecting a plurality of water outlets (14).

4. The slag ditch water cooling device for a blast furnace iron-making site according to claim 1, characterized in that: A protrusion (5) is provided on the inner side of the water cooling plate (1).

5. The slag ditch water cooling device for a blast furnace iron-making site according to claim 4, characterized in that: A chute (6) is provided on one side of the water cooling plate (1).

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