Circulating water cooling device for tuyere of blast furnace

Abstract

The utility model relates to the technical field of blast furnace tuyere cooling, and discloses a blast furnace tuyere circulating water cooling device which comprises a base body, a first cooling tank and a second cooling tank which are symmetrical to each other are arranged in the base body, and the inner walls of the first cooling tank and the second cooling tank are fixedly connected with heat conduction layers. A first cooling mechanism is detachably connected to the first cooling groove, a second cooling mechanism is detachably connected to the second cooling groove, the first cooling mechanism and the second cooling mechanism are the same in structure and are in bilateral symmetry about the base body, and the first cooling mechanism and the second cooling mechanism are fixed through bolts and nuts. The blast-furnace tuyere cooling device is divided into two parts for cooling and radiating the blast-furnace tuyere. The two parts are detachably connected, so that the S-shaped water pipe can be quickly and conveniently mounted and replaced. The flexibility and maintainability of the device are improved, the S-shaped water pipe with more scale can be replaced in time, and the situation that heat exchange between cooling water and the interior of the cooling cavity is hindered by excessive scale is avoided. Therefore, stable operation of the blast furnace is ensured.

Description

Technical Field

[0001] This utility model relates to the field of blast furnace tuyere cooling technology, specifically a blast furnace tuyere circulating water cooling device. Background Technology

[0002] The blast furnace tuyeres are a key piece of equipment in the ironmaking process. Located between the belly and bottom of the blast furnace, their main function is to blow high-temperature hot air into the furnace, causing the coke to oxidize and burn, producing CO. The CO then rises at high temperatures and reduces the iron, which was originally in oxide form. The normal operation of the blast furnace tuyeres is crucial for the stable production and output of the blast furnace.

[0003] The patent with publication number CN217324150U discloses a tuyere device for blast furnace ironmaking, including a blast furnace tuyere base with a frustum-shaped structure. A tuyere is located in the center of the blast furnace tuyere base, and a cooling chamber is formed inside the base wall. Multiple cooling rods are installed within the cooling chamber, and each cooling rod has multiple baffles. This technology features a simple structure and novel design. Through the interaction of cooling rods and cooling water within the cooling chamber, heat exchange with the cooling water occurs periodically during the heat absorption and dissipation process of the cooling rods, improving the heat absorption efficiency of the cooling rods. This avoids excessive cooling water flushing, saving water resources and providing uniform cooling to the tuyere, further improving its cooling efficiency and significantly enhancing its heat dissipation effect.

[0004] However, the above technology still has the following problems:

[0005] During the heat exchange process, impurities in the cooling water, especially calcium and magnesium salts, tend to accumulate and adhere to the cooling walls under high temperatures and prolonged flow, forming scale. Scale has poor thermal conductivity, hindering heat exchange between the cooling water and the inner wall of the cooling chamber, thus reducing cooling efficiency. This leads to increased tuyeres temperature, affecting the normal operation of the blast furnace. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a blast furnace tuyeres circulating water cooling device with a detachable connection, facilitating the replacement of S-shaped water pipes to ensure cooling effect.

[0007] This utility model provides the following technical solution: a circulating water cooling device for blast furnace tuyeres, comprising a base, wherein two mutually symmetrical cooling tanks, namely, cooling tank one and cooling tank two, are arranged inside the base. The inner walls of cooling tank one and cooling tank two are fixedly connected with a heat-conducting layer. Cooling mechanism one is detachably connected to cooling tank one, and cooling mechanism two is detachably connected to cooling tank two. Cooling mechanism one and cooling mechanism two have the same structure and are symmetrical about the left and right sides of the base. Cooling mechanism one and cooling mechanism two are fixed by bolts and nuts.

[0008] Furthermore, the inner wall of the substrate exhibits an annular wave peak state, and the bottom walls of cooling tank one and cooling tank two have the same annular wave peak.

[0009] Furthermore, the thermally conductive layer is a graphite liner.

[0010] Furthermore, the cooling mechanism includes a cover plate, an S-shaped water pipe is fixedly connected to the inner wall of the cover plate, an inlet and an outlet connected to the S-shaped water pipe are fixedly connected to the cover plate, and fixing plates are fixedly connected to the upper and lower sides of the cover plate, with several round holes opened on the fixing plates.

[0011] Furthermore, the inner wall of the cover plate is fixedly connected with several fixing blocks for fixing the S-shaped water pipe.

[0012] Furthermore, several heat dissipation fins are fixedly connected to the surface of the cover plate.

[0013] Furthermore, a ceramic fiber heat-insulating sealing gasket is installed at the connection between the cover plate and cooling tank one or cooling tank two.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This blast furnace tuyere circulating water cooling device consists of two parts for cooling the tuyere. These two parts feature a detachable connection design, allowing for quick and easy installation and replacement of the S-shaped water pipes. This improves the flexibility and maintainability of the device, enabling timely replacement of S-shaped water pipes with excessive scale buildup, preventing excessive scale from hindering heat exchange between the cooling water and the cooling chamber. As a result, cooling efficiency is maintained, tuyere temperature is effectively controlled, and stable blast furnace operation is ensured. The device is simple, quick, and convenient to operate. Attached Figure Description

[0016] Figure 1 This is an exploded view of the entire utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the inner wall of the matrix of this utility model.

[0018] In the diagram: 1. Substrate; 2. Cooling tank one; 3. Cooling tank two; 4. Heat-conducting layer; 5. Cover plate; 6. S-shaped water pipe; 7. Water inlet; 8. Water outlet; 9. Fixing plate; 10. Round hole; 11. Fixing block; 12. Heat dissipation fins; 13. Ceramic fiber heat insulation sealing gasket. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Please see Figures 1 to 2 A circulating water cooling device for blast furnace tuyeres includes a base 1. The base 1 has two symmetrical cooling tanks 2 and 3 inside. The inner walls of both cooling tanks 2 and 3 are fixedly connected to a heat-conducting layer 4. Cooling mechanism 1 is detachably connected to cooling tank 2, and cooling mechanism 2 is detachably connected to cooling tank 3. Cooling mechanism 1 and cooling mechanism 2 have the same structure and are symmetrical about the base 1. Cooling mechanism 1 and cooling mechanism 2 are fixed by bolts and nuts.

[0021] The blast furnace tuyeres circulating water cooling device in this utility model is structurally similar to existing blast furnace tuyeres devices for ironmaking, such as the tuyeres device for ironmaking disclosed in patent CN217324150U. The main improvement of this utility model lies in its two-part cooling system for the blast furnace tuyeres. These two parts are designed with a detachable connection, allowing for quick and easy installation and replacement of the S-shaped water pipes 6. This improves the flexibility and maintainability of the device, enabling timely replacement of S-shaped water pipes 6 with excessive scale buildup, preventing excessive scale from hindering heat exchange between the cooling water and the cooling chamber. Figures 1 to 2 As shown, when the cooling effect of the blast furnace tuyere circulating water cooling device in this utility model is found to be reduced during use, the bolts and nuts connecting the cooling mechanism one and the cooling mechanism two can be removed, so that the cooling mechanism one and the cooling mechanism two can be replaced as a whole. Alternatively, the S-shaped water pipe 6 fixed on the inner wall of the cover plate 5 can be replaced, so that the S-shaped water pipe 6 on the cooling mechanism one and the cooling mechanism two is free of scale. This ensures the heat exchange effect between the cooling tank one 2 or the cooling tank two 3 and the S-shaped water pipe 6, thereby ensuring the cooling effect of the cooling mechanism one and the cooling mechanism two. This allows the tuyere temperature to be effectively controlled, thus ensuring the stable operation of the blast furnace.

[0022] like Figure 2 As shown, the inner wall of the substrate 1 exhibits an annular wave peak state, and the bottom walls of cooling tank 1 2 and cooling tank 2 3 have the same annular wave peak.

[0023] Specifically, the annular wave crest state can increase the contact area between the inner wall of the substrate 1 and the blast furnace tuyeres, thereby enabling the heat-conducting layer 4 to transfer more heat and thus improve the cooling effect on the blast furnace tuyeres.

[0024] like Figure 1 or Figure 2 As shown, the thermally conductive layer 4 is a graphite liner.

[0025] Specifically, graphite has excellent high-temperature resistance and thermal conductivity.

[0026] As shown in the figure, the cooling mechanism includes a cover plate 5, an S-shaped water pipe 6 is fixedly connected to the inner wall of the cover plate 5, an inlet 7 and an outlet 8 connected to the S-shaped water pipe 6 are fixedly connected to the cover plate 5, and fixing plates 9 are fixedly connected to the upper and lower sides of the cover plate 5, and a number of round holes 10 are opened on the fixing plates 9.

[0027] Specifically, cooling mechanism one is installed by inserting a bolt into the round hole 10 and passing it out through the round hole 10 on cooling mechanism two. Cooling mechanism one and cooling mechanism two are fixed with a nut. Cooling mechanism one and cooling mechanism two can be removed by reversing the operation. When cooling the blast furnace tuyeres, cooling water is delivered to the water inlet 7, so that the cooling water flows in the S-shaped water pipe 6, thereby exchanging heat inside the cooling tank 2. The cooled water that has undergone heat exchange is discharged from the water outlet 8.

[0028] like Figure 1 As shown, the inner wall of the cover plate 5 is fixedly connected with several fixing blocks 11 for fixing the S-shaped water pipe 6.

[0029] Specifically, the fixing block 11 is not only used to fix the S-shaped water pipe 6, but also to abut against the inner wall of the cooling tank 2, thereby resisting the damage to the S-shaped water pipe 6 caused by the deformation of the base 1.

[0030] As shown in the figure, several heat dissipation fins 12 are fixedly connected to the surface of the cover plate 5.

[0031] Specifically, the heat dissipation fins 12 increase the contact area between the cover plate 5 and the air, thereby improving the heat dissipation effect of the cover plate 5.

[0032] like Figure 1 As shown, a ceramic fiber heat insulation sealing gasket 13 is installed at the connection between the cover plate 5 and the cooling tank 2 or the cooling tank 3.

[0033] Specifically, the ceramic fiber thermal insulation gasket 13 can withstand rapid temperature changes without cracking or damage, has good sealing performance, and can be used for sealing high-temperature equipment, pipelines, electrical appliances, etc. It has high tear resistance and high flexibility, is easy to process and install, and can be used for a long time in high temperature and high pressure environments without deformation or damage.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A circulating water cooling device for blast furnace tuyeres, comprising a base (1), characterized in that: The base (1) has two symmetrical cooling tanks 1 (2) and 2 (3) inside. The inner walls of the cooling tank 1 (2) and the cooling tank 2 (3) are fixedly connected with a heat-conducting layer (4). The cooling tank 1 (2) is detachably connected with a cooling mechanism 1, and the cooling tank 2 (3) is detachably connected with a cooling mechanism 2. The cooling mechanism 1 and the cooling mechanism 2 have the same structure and are symmetrical about the base (1). The cooling mechanism 1 and the cooling mechanism 2 are fixed by bolts and nuts.

2. The blast furnace tuyeres circulating water cooling device according to claim 1, characterized in that: The inner wall of the substrate (1) presents an annular wave peak state, and the bottom walls of the first cooling tank (2) and the second cooling tank (3) have the same annular wave peak.

3. A blast furnace tuyeres circulating water cooling device according to claim 1 or 2, characterized in that: The thermally conductive layer (4) is a graphite liner.

4. A blast furnace tuyeres circulating water cooling device according to claim 1 or 2, characterized in that: The cooling mechanism includes a cover plate (5), an S-shaped water pipe (6) is fixedly connected to the inner wall of the cover plate (5), an inlet (7) and an outlet (8) connected to the S-shaped water pipe (6) are fixedly connected to the cover plate (5), and a fixing plate (9) is fixedly connected to both the upper and lower sides of the cover plate (5), and a number of round holes (10) are opened on the fixing plate (9).

5. A blast furnace tuyeres circulating water cooling device according to claim 4, characterized in that: The inner wall of the cover plate (5) is fixedly connected with several fixing blocks (11) for fixing the S-shaped water pipe (6).

6. A blast furnace tuyeres circulating water cooling device according to claim 4, characterized in that: Several heat dissipation fins (12) are fixedly connected to the surface of the cover plate (5).

7. A blast furnace tuyeres circulating water cooling device according to claim 4, characterized in that: A ceramic fiber heat insulation sealing gasket (13) is installed at the connection between the cover plate (5) and the cooling tank one (2) or the cooling tank two (3).

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