Molten iron trough with composite cooling structure

Abstract

The utility model relates to the technical field of molten iron grooves, in particular to a molten iron groove with a composite cooling structure, which comprises a main body, a groove body made of castable is arranged in the main body, water cooling structures are arranged on two sides of the groove body, and an air cooling structure is arranged between the main body and the groove body. The water cooling structure comprises water cooling plates arranged on the two sides of the ditch body. The cooling device has the beneficial effects that in actual use, the ditch body is cooled through the water cooling plate, and flowing air sequentially passes through the air inlet, the air duct and the air outlet, so that the ditch body is cooled through air cooling, that is, the ditch body is cooled through the water cooling structure and the air cooling structure, and the cooling effect on the ditch body is ensured; and meanwhile, the flowing air can cool the water cooling plate, that is, the cooling effect of the water cooling structure is improved through the air cooling structure, and therefore the cooling effect on the ditch body is further guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of iron water channels, in particular to an iron water channel with a composite cooling structure. Background Art

[0002] As the volume of blast furnaces increases, higher requirements are placed on the use of iron ditch. Iron ditch is an important facility for ironmaking blast furnace production. It consists of main ditch, branch ditch, slag ditch, slag skimmer and swing chute. The main ditch is the channel for high-temperature molten iron and slag to flow out of the blast furnace and the carrier for slag and iron separation. It has a direct impact on the production efficiency and production cost of the blast furnace. The main ditch must not only withstand the high-pressure impact of molten iron flow above 1450℃, but also withstand the erosion from high-temperature slag and air. Therefore, the refractory lining of the main ditch needs to be repaired and replaced at regular intervals.

[0003] The working environment of the iron ditch is extremely harsh, and its internal temperature is extremely high. It is washed and corroded by high-temperature molten iron for a long time, which causes serious damage to the equipment and greatly shortens its service life. Therefore, how to effectively reduce the temperature of the iron ditch and improve its anti-corrosion ability has become a technical problem that needs to be solved urgently in the metallurgical industry;

[0004] At present, in order to reduce the temperature of the iron ditch, the industry generally adopts the method of installing a water cooling structure on the iron ditch to cool it down. This water cooling structure takes away the heat of the iron ditch through the cooling effect of the circulating water flow, thereby achieving the purpose of cooling. However, the existing water cooling structure has obvious limitations. Its cooling area is small and it cannot fully cover the heated area of ​​the iron ditch, resulting in unsatisfactory cooling effect.

[0005] Therefore, a molten iron ditch with a composite cooling structure is needed to overcome the occurrence of the above problems. Utility Model Content

[0006] In order to solve the above problems, the embodiment of the utility model provides an iron water channel with a composite cooling structure, which achieves the purpose of solving the problems raised in the background technology.

[0007] In order to achieve the above-mentioned purpose, the embodiment of the utility model specifically adopts the following technical scheme: an iron water ditch with a composite cooling structure, comprising a main body, the interior of the main body is made into a ditch body by casting material, water cooling structures are arranged on both sides of the ditch body, and an air cooling structure is arranged between the main body and the ditch body; the water cooling structure comprises water cooling plates arranged on both sides of the ditch body; the air cooling structure comprises an air duct arranged between the main body and the ditch body, an air inlet arranged on the main body and connected to the air duct, and an air outlet arranged on the main body and connected to the air duct; the air duct comprises a side air duct arranged on the side of the ditch body, and a bottom air duct arranged at the bottom of the ditch body and connected to the side air duct; the water cooling plate is located in the side air duct.

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

[0009] There are multiple air inlets, and the distribution density of the air inlets at positions on the main body relative to the water cooling plate is greater than the distribution density of the air inlets at other positions on the main body.

[0010] The bottom air duct is formed by casting a casting material or by stacking a formed refractory body.

[0011] The water cooling structure also includes a heat conductive prefabricated component arranged inside the trench body; the heat conductive prefabricated component is attached to one side of the water cooling plate.

[0012] The beneficial effects of the embodiments of the utility model are:

[0013] In actual use, the trench body is cooled by a water cooling plate, and the flowing wind passes through the air inlet, the air duct, and the air outlet in sequence, thereby cooling the trench body. That is, the trench body is cooled by the water cooling structure and the air cooling structure to ensure the cooling effect on the trench body. At the same time, the flowing wind will cool the water cooling plate, that is, the cooling effect of the water cooling structure is enhanced by the air cooling structure, thereby further ensuring the cooling effect on the trench body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 for Figure 1 Schematic cross-sectional view at AA in the middle.

[0016] In the figure: 1. main body; 2. groove body; 3. water cooling structure; 31. water cooling plate; 32. heat conductive prefabricated part; 4. air cooling structure; 41. air duct; 411. side air duct; 412. bottom air duct; 42. air inlet; 43. air outlet. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0018] See also Figure 1 to Figure 2 The utility model embodiment discloses a molten iron ditch with a composite cooling structure, comprising a main body 1, the interior of the main body 1 is made into a ditch body 2 by casting material, water cooling structures 3 are arranged on both sides of the ditch body 2, and an air cooling structure 4 is arranged between the main body 1 and the ditch body 2;

[0019] The water cooling structure 3 includes water cooling plates 31 arranged on both sides of the groove body 2; the water cooling plate 31 is made of a shell of metal or other material with good thermal conductivity, and a water cooling pipe coiled inside the shell. The structure of the water cooling plate 31 belongs to the mature technology in this field, so the structure of the water cooling plate 31 will not be described in detail;

[0020] The air cooling structure 4 includes an air duct 41 disposed between the main body 1 and the groove body 2, an air inlet 42 disposed on the main body 1 and communicating with the air duct 41, and an air outlet 43 disposed on the main body 1 and communicating with the air duct 41;

[0021] The air duct 41 includes a side air duct 411 disposed at the side of the trench body 2, and a bottom air duct 412 disposed at the bottom of the trench body 2 and connected to the side air duct 411; the water cooling plate 31 is located in the side air duct 411;

[0022] In actual use, the water cooling plate 31 is used to cool the groove body 2, and the flowing wind passes through the air inlet 42, the air duct 41, and the air outlet 43 in sequence, so as to cool the groove body 2 by air, that is, the groove body 2 is cooled by the water cooling structure 3 and the air cooling structure 4, so as to ensure the cooling effect on the groove body 2; at the same time, the flowing wind will cool the water cooling plate 31, that is, the cooling effect of the water cooling structure 3 is enhanced by the air cooling structure 4, so as to further ensure the cooling effect on the groove body 2;

[0023] The side of the trench body 2 is cooled by the side air duct 411, and the bottom of the trench body 2 is cooled by the bottom air duct 412, so that the trench body 2 is fully cooled. In actual use, the temperature of the trench body 2 can be prevented from being too high, that is, the temperature of the trench body 2 is controlled in a lower range, thereby reducing the adverse effects of thermal expansion and contraction.

[0024] As a further illustration of this application:

[0025] There are multiple air inlets 42, and the distribution density of the air inlets 42 at the position relative to the water cooling plate 31 on the main body 1 is greater than the distribution density of the air inlets 42 at other positions on the main body 1, so that the air volume entering the water cooling plate 31 is larger, thereby improving the cooling effect on the water cooling plate 31.

[0026] As a further illustration of this application:

[0027] The bottom air duct 412 is formed by pouring a casting material or by stacking a formed refractory body. The bottom air duct 412 formed by pouring a casting material is a straight channel, and the shape is not limited to a square, a cylinder, etc.;

[0028] When the formed refractory bodies are stacked, they can be stacked at regular intervals, so that the bottom air ducts 412 formed have an irregular shape, and the bottom air ducts 412 are crisscrossed to improve the cooling effect.

[0029] As a further illustration of this application:

[0030] The water-cooling structure 3 also includes a heat-conducting preformed part 32 arranged inside the groove body 2; the heat-conducting preformed part 32 is attached to one side of the water-cooling plate 31; the heat-conducting preformed part 32 can be cast by using a casting material, or can be made of a metal material to improve the heat conduction effect between the groove body 2 and the water-cooling plate 31, thereby improving the cooling effect of the water-cooling plate 31 on the groove body 2.

[0031] As a further illustration of this application:

[0032] When the trench body 2 is formed by casting the castable material, a high-density castable material can be used for the portion of the trench body 2 that is directly subjected to scouring when the molten iron is poured, thereby improving the scouring resistance of the portion.

[0033] As a further illustration of this application:

[0034] A thermocouple may be installed inside the air duct 41 to measure the temperature, thereby facilitating adjustment of the operating speeds of the water cooling structure 3 and the air cooling structure 4 according to the actual temperature.

[0035] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0037] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0038] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, 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 fall within the protection scope of the present invention.

Claims

1. A molten iron channel with a composite cooling structure, comprising a main body (1), the interior of the main body (1) being formed into a channel body (2) by casting material, characterized in that: Water cooling structures (3) are provided on both sides of the groove body (2), and an air cooling structure (4) is provided between the main body (1) and the groove body (2); The water cooling structure (3) comprises water cooling plates (31) arranged on both sides of the trench body (2); The air cooling structure (4) comprises an air duct (41) arranged between the main body (1) and the groove body (2), an air inlet (42) arranged on the main body (1) and connected to the air duct (41), and an air outlet (43) arranged on the main body (1) and connected to the air duct (41); The air duct (41) comprises a side air duct (411) arranged at the side of the groove body (2), and a bottom air duct (412) arranged at the bottom of the groove body (2) and connected to the side air duct (411); the water cooling plate (31) is located in the side air duct (411).

2. The iron water channel with a composite cooling structure according to claim 1, characterized in that: A plurality of air inlets (42) are provided, and the distribution density of the air inlets (42) at positions on the main body (1) relative to the water cooling plate (31) is greater than the distribution density of the air inlets (42) at other positions on the main body (1).

3. The iron water channel with a composite cooling structure according to claim 1, characterized in that: The bottom air duct (412) is formed by casting a casting material or by stacking a formed refractory body.

4. The iron water channel with a composite cooling structure according to claim 1, characterized in that: The water cooling structure (3) further comprises a heat conductive preform (32) arranged inside the groove body (2); the heat conductive preform (32) is attached to one side of the water cooling plate (31).

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