Cooling device for continuous casting

Abstract

The invention relates to the technical field of mechanical cooling, in particular to a continuous casting cooling device which comprises a high heat conduction guide plate, a sealing mechanism and a phase change box. The two horizontal ends of the high-heat-conduction guide plate are connected with the two horizontal ends of the phase change box, the top end of the high-heat-conduction guide plate is connected with the top end of the phase change box, and the upper surface of the high-heat-conduction guide plate tightly abuts against the lower surface of the cooling bed for continuous casting. The high heat conduction guide plate partially extends into the phase change box; a sealing mechanism is arranged at the joint of the high-thermal-conductivity guide plate and the phase change box; a phase change layer is arranged in the phase change box; the heat absorption plate in the high-heat-conduction guide plate is tightly attached to the cooling bed, so that the cooling bed absorbs heat, then the heat is conducted to the phase change layer in the phase change box through the heat transfer plate, the phase change layer stores and absorbs heat, the heat of the cooling bed is transferred, and the purpose of cooling a casting blank on the cooling bed for continuous casting is achieved. The device is easy and convenient to operate, free of water and electricity consumption, low in labor cost, energy-saving and environment-friendly, and a new path for cooling of the cooling bed is developed.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical cooling, in particular to a cooling device for continuous casting. Background Art

[0002] In continuous casting production, the cooling bed mainly relies on natural cooling, that is, placing the high-temperature ingot on the cooling bed and reducing the ingot temperature through natural convection and heat radiation of the air. This method has low cooling efficiency and the ingot stays on the cooling bed for a long time, which limits production efficiency and cannot meet the needs of large-scale, high-efficiency continuous casting production.

[0003] Some existing cooling measures for continuous casting cooling beds have their own disadvantages. For example, in spray cooling, the nozzles are easily clogged by impurities and scale in the water, resulting in uneven spraying, which affects the quality of the ingots. Frequent maintenance is required, which has high manpower and material costs. Poor water quality will also cause scaling on the surface of the ingots, interfering with the cooling of the ingots. Water-cooled pipe cooling has the risk of water leakage. Once leaked, it will damage the equipment and affect the ingots. In addition, the supporting equipment is complicated and requires a large investment. The operation of the water pump will also increase energy consumption. Air cooling technology is affected by the external temperature and the temperature control is unstable. Uneven airflow can easily cause local hot spots in the ingots, damaging the ingot products. In addition, the fan has a loud operating noise, which interferes with the working environment.

[0004] Therefore, there is an urgent need for a cooling device for continuous casting that has low operation and maintenance costs, avoids affecting the quality of the casting, and is energy-saving and environmentally friendly. Summary of the invention

[0005] The object of the present invention is to provide a cooling device for continuous casting to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cooling device for continuous casting, comprising a high thermal conductivity plate, a sealing mechanism and a phase change box; the two ends of the high thermal conductivity plate in a horizontal direction are connected to the two ends of the phase change box in a horizontal direction, the top of the high thermal conductivity plate is connected to the top of the phase change box, and the upper surface of the high thermal conductivity plate is tightly abutted against the lower surface of the continuous casting cooling bed; the high thermal conductivity plate partially extends into the phase change box; a sealing mechanism is provided at the connection between the high thermal conductivity plate and the phase change box; a phase change layer is provided in the phase change box, and the phase change layer is connected to the high thermal conductivity plate.

[0007] The above-mentioned cooling device for continuous casting, the high heat conductivity plate includes a heat absorbing plate and a heat transfer plate; the upper surface of the heat absorbing plate is tightly abutted against the lower surface of the continuous casting cooling bed, the lower surface of the heat absorbing plate is tightly abutted against the upper surface of the phase change box, the heat absorbing plate is arranged above the heat transfer plate, and the heat absorbing plate and the heat transfer plate are fixedly connected; the number of heat transfer plates is multiple, and the multiple heat transfer plates are evenly distributed at the bottom end of the heat absorbing plate, one end of the heat transfer plate is fixedly connected to the heat absorbing plate, the other end of the heat transfer plate is arranged inside the phase change box, and the top end of the heat transfer plate is flush with the top end of the phase change box, and the ratio of the vertical distance from the top end to the bottom end of the heat transfer plate to the vertical distance from the top end to the bottom end of the phase change box is 3:4 to 9:10.

[0008] In the above-mentioned continuous casting cooling device, the phase change box is an open box, and the material of the phase change box is aluminum alloy.

[0009] The above-mentioned cooling device for continuous casting, the phase change layer includes a first phase change layer, a second phase change layer and a third phase change layer; the first phase change layer is arranged below the second phase change layer, and the first phase change layer is tightly abutted against the second phase change layer; the second phase change layer is arranged below the third phase change layer; and the second phase change layer is tightly abutted against the third phase change layer; the material of the first phase change layer is a solid-solid phase change material; the material of the second phase change layer is a solid-solid inorganic phase change material; the material of the third phase change layer is a solid-liquid phase change material.

[0010] In the above-mentioned continuous casting cooling device, the material of the high thermal conductivity plate is a graphite pressed product or a diamond pressed product, the first phase change layer is a high temperature resistant silicone layer, the second phase change layer is a ceramic layer, and the third phase change layer is a sodium nitrate-urea eutectic mixture layer.

[0011] In the above-mentioned cooling device for continuous casting, the phase change box includes a ventilation net; there are multiple ventilation nets, and the multiple ventilation nets are evenly distributed at the bottom of the first phase change layer, the ventilation net connects the first phase change layer with the atmosphere, and the mesh number of the ventilation net is 5 to 20 meshes.

[0012] In the above-mentioned cooling device for continuous casting, a baffle is arranged at the top of the phase change box, the number of the baffles is 2, and the two baffles are arranged on the inner and outer sides of the phase change box, and the baffles are matched with the sealing mechanism.

[0013] The above-mentioned cooling device for continuous casting, the sealing mechanism includes a strip-shaped elastic body, a first cavity, a second cavity and a high-temperature resistant magnetic strip; the upper surface of the strip-shaped elastic body is tightly abutted against the heat absorption plate, the first cavity is arranged in the center of the strip-shaped elastic body, and the first cavity is engaged with the top port of the phase change box, the number of the second cavities is 2, the two second cavities are arranged on both sides of the first cavity, and the second cavity is engaged with the baffle plate, the number of the high-temperature resistant magnetic strips is 2, and the two high-temperature resistant magnetic strips are respectively arranged at the two ends of the strip-shaped elastic body in the horizontal direction, the high-temperature resistant magnetic strip is connected to the strip-shaped elastic body, and the high-temperature resistant magnetic strip is adsorbed on the inner and outer sides of the top port of the phase change box.

[0014] The above-mentioned continuous casting cooling device further comprises a movable vehicle plate; the movable vehicle plate is arranged below the phase change box, and the movable vehicle plate is detachably connected to the phase change box.

[0015] The above-mentioned cooling device for continuous casting, the mobile car plate includes a bottom plate, a bottom plate ventilation net, a fence, a universal wheel and a push-pull handle; the fence is arranged above the bottom plate, the fence is fixedly connected to the bottom plate, the bottom plate ventilation net runs through the middle of the bottom plate, and the bottom plate ventilation net is a 5-20 mesh alloy net; the universal wheel is connected to the bottom end of the bottom plate, and the push-pull handle is fixedly connected to the side end of the bottom plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The structure and material design of a continuous casting cooling device provided by the present invention produce an excellent synergistic effect. The heat absorbing plate in the high thermal conductivity plate is placed in close contact with the cooling bed to absorb heat from the cooling bed, and then the heat is conducted to the phase change layer arranged in the phase change box through the heat transfer plate, so that the phase change layer composed of the phase change material stores and absorbs heat, thereby transferring the heat from the cooling bed, and then cooling the cast embryo on the continuous casting cooling bed.

[0018] 2. The present invention innovatively applies high thermal conductivity materials and phase change materials to the cooling scenario of the cooling bed in the continuous casting process through an ingenious structural design. The heat transfer plate is arranged inside the phase change box, so that the heat transfer plate is in direct contact with the phase change material. The third phase change layer is solid and becomes liquid after absorbing heat. When it is in liquid state, it is in more complete contact with the second phase change layer, so that the second phase change layer has higher heat absorption efficiency and can quickly and efficiently reduce the temperature of the cooling bed. The first phase change layer is in direct contact with the ventilation network and blocks the ventilation network, so that the phase change box is a closed environment. At the same time, the heat of the first phase change layer can be dissipated, which expands the application scenarios of phase change materials in the continuous casting field and develops a new path for the application of phase change materials.

[0019] 3. The present invention is simple to operate, low in cost, and free from the consumption of water and electricity. It only needs to place the cooling device provided by the present invention under the cooling bed and make the heat absorbing plate close to the lower surface of the cooling bed to start working spontaneously. During this period, no manpower and material resources are required for repeated maintenance and repair. The characteristics of the phase change material enable it to automatically adjust the temperature. When not in operation, the phase change material spontaneously dissipates heat in the phase change box made of aluminum alloy, allowing its own temperature to approach the atmospheric temperature, preparing for the next stage of cooling work.

[0020] 4. The present invention cools the castings evenly by using a high heat conductive plate to cool the cooling bed, thereby cooling the castings, without causing the risk of damaging the cooling bed for continuous casting, thereby fundamentally avoiding the possibility of affecting the quality of the castings. In addition, the phase change box made of aluminum alloy and the phase change layer composed of the phase change material in the present invention are both recyclable resources, energy-saving and environmentally friendly, and in line with industrial development. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional schematic diagram of a continuous casting cooling device according to the present invention from a front view;

[0022] Figure 2 is a schematic structural diagram of a high thermal conductivity plate of the present invention;

[0023] Figure 3 1. is a schematic diagram of a phase change box equipped with a sealing mechanism according to the present invention from a front view;

[0024] Figure 4 is a cross-sectional schematic diagram of the phase change box of the present invention from the front view;

[0025] Figure 5 It is a schematic diagram of the card baffle structure of the present invention;

[0026] Figure 6 is a schematic diagram of the sealing mechanism of the present invention;

[0027] Figure 7 It is a schematic diagram of the front view of the movable vehicle plate of the present invention.

[0028] Description of reference numerals:

[0029] 1—high thermal conductivity plate; 11—heat absorbing plate; 12—heat transfer plate;

[0030] 2—sealing mechanism; 21—strip-shaped elastic body; 22—first cavity;

[0031] 23—second cavity; 24—high temperature resistant magnetic strip;

[0032] 3—phase change box; 31—ventilation net; 32—card baffle;

[0033] 4—mobile vehicle plate; 41—bottom plate; 42—bottom plate ventilation net;

[0034] 43—enclosure; 44—universal wheel; 45—push-pull handle.

[0035] 5—phase change layer 51—first phase change layer; 52—second phase change layer;

[0036] 53—third phase change layer; DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Embodiment 1:

[0039] like Figure 1 to Figure 3A continuous casting cooling device shown in the figure comprises a high thermal conductivity plate 1, a sealing mechanism 2 and a phase change box 3; the two ends of the high thermal conductivity plate 1 in the horizontal direction are connected to the two ends of the phase change box 3 in the horizontal direction, the top of the high thermal conductivity plate 1 is connected to the top of the phase change box 3, and the upper surface of the high thermal conductivity plate 1 is tightly abutted against the lower surface of the continuous casting cooling bed; the high thermal conductivity plate 1 partially extends into the phase change box 3; a sealing mechanism 2 is provided at the connection between the high thermal conductivity plate 1 and the phase change box 3;

[0040] A phase change layer 5 is arranged in the phase change box 3; the high thermal conductivity plate 1 can be placed on the top of the phase change box 3, and rely on its own gravity to press the sealing mechanism 2 at the junction of the high thermal conductivity plate 1 and the phase change box 3, so as to achieve the purpose of making the phase change box 3 a closed environment, and the top upper surface of the high thermal conductivity plate 1 is close to the lower surface of the cooling bed, and the heat of the cooling bed will be transferred from the top of the high thermal conductivity plate 1 to the bottom of the high thermal conductivity plate 1, and the bottom end of the high thermal conductivity plate 1 is arranged inside the phase change box 3, and the phase change layer 5 is arranged inside the phase change box 3, so the heat is then absorbed by the phase change layer 5, and finally the purpose of cooling the continuous casting cooling bed is achieved.

[0041] like Figure 2 As shown in the figure, the high thermal conductivity plate 1 includes a heat absorbing plate 11 and a heat transfer plate 12; the heat absorbing plate 11 is arranged above the heat transfer plate 12, and the heat absorbing plate 11 is fixedly connected to the heat transfer plate 12; in this embodiment, the heat transfer plate 12 is a thin plate, and there are multiple heat transfer plates 12, and the multiple heat transfer plates 12 are evenly distributed at the bottom of the heat absorbing plate 11, and the heat transfer plate 12 is fixedly connected to the heat absorbing plate 11, so that the heat absorbed by the heat absorbing plate 11 is transferred to the phase change material through the heat transfer plate 12, and the thin plate design of the heat absorbing plate 12 can make the heat transfer to the phase change material more uniform and efficient, and the heat transfer The bottom end of the heat plate 12 is arranged inside the phase change box 3, and the top end of the heat transfer plate 12 is flush with the top end of the phase change box 3, that is, the entire heat transfer plate 12 is arranged inside the phase change box 3, and the ratio of the vertical distance from the top end to the bottom end of the heat transfer plate 12 to the vertical distance from the top end to the bottom end of the phase change box 3 is 3:4-9:10, and in this embodiment, the ratio is 4:5. The phase change layer 5 is evenly distributed around the heat transfer plate 12, and the heat spreader 12 is tightly abutted against the phase change layer 5, ensuring that the heat transfer plate 12 can transfer heat to each phase change layer 5 at a height level in the phase change box 3.

[0042] like Figure 3-4 As shown, in this embodiment, the phase change box 3 is an open box, and the phase change box 3 can be sealed by placing a high thermal conductivity plate, and the material of the phase change box 3 is aluminum alloy to help the phase change layer 5 in the phase change box 3 dissipate heat.

[0043] like Figure 4As shown, the phase change layer 5 includes a first phase change layer 51, a second phase change layer 52 and a third phase change layer 53; the first phase change layer 51 is arranged below the second phase change layer 52, and the first phase change layer 51 is closely abutted against the second phase change layer 52; the second phase change layer 52 is arranged below the third phase change layer 53; and the second phase change layer 52 is closely abutted against the third phase change layer 53, the first phase change layer 51 is closely abutted against the bottom end of the heat transfer plate 12, the second phase change layer 52 is closely abutted against the middle section of the heat transfer plate 12, and the third phase change layer 53 is closely abutted against the bottom end of the heat transfer plate 12, the second phase change layer 52 is closely abutted against the middle section of the heat transfer plate 12, and the third phase change layer 53 is closely abutted against the bottom end of the heat transfer plate 12. The three phase change layers 53 are in close contact with the upper end of the heat transfer plate 12. The material of the first phase change layer 51 is a solid-solid phase change material; the material of the second phase change layer 52 is a solid-solid inorganic phase change material; the material of the third phase change layer 53 is a solid-liquid phase change material, wherein the material of the high thermal conductivity plate 1 is a graphite pressed product or a diamond pressed product, the first phase change layer 51 is a high temperature resistant silicone layer, the second phase change layer 52 is a ceramic layer, and the third phase change layer 53 is a sodium nitrate-urea low eutectic mixture layer.

[0044] The third phase change layer 53 will gradually melt when the temperature reaches 100°C to 150°C, and while absorbing and storing heat, it can better conduct heat to the second phase change layer 52. In this embodiment, the ceramic layer used as the second phase change layer 52 has a heat storage density that is usually much higher than that of traditional sensible heat storage materials, which can reach more than 100 kJ / kg, so that the second phase change layer 52 can efficiently absorb and store heat, and the risk of collision damage to the ceramic layer can be reduced by the first phase change layer 51 composed of a high-temperature resistant silicone layer, thereby maximizing the benefit of the overall phase change layer 5. The high-temperature resistant silicone in this embodiment has good flexibility and processability, and is easy to be made into products of various shapes and sizes, such as blocks, which can better adapt to the application in this scenario, facilitate close fitting with the second phase change layer, and improve heat transfer efficiency.

[0045] In this embodiment, the phase change box 3 includes a ventilation net 31; the number of the ventilation nets 31 is 5, and the 5 ventilation nets 31 are evenly distributed at the bottom of the first phase change layer 51, the ventilation net 31 connects the first phase change layer 51 with the atmosphere, the mesh number of the ventilation net 31 is 10 meshes, the purpose of the ventilation net 31 is to better dissipate the heat of the first phase change layer, and due to the toughness of the high-temperature resistant silicone itself, it is only necessary to fit the first phase change layer 51 tightly against the ventilation net 31, which can also achieve a good sealing effect on the phase change box 3.

[0046] In this embodiment, if Figure 5 As shown, a baffle plate 32 is disposed at the top of the phase change box 3, the number of baffle plates 32 is 2, and two baffle plates 32 are disposed on both sides of the phase change box 3, and the baffle plates 32 fit with the sealing mechanism 2 to ensure the stability of the connection between the sealing mechanism 2 and the phase change box 3.

[0047] like Figure 6As shown, the sealing mechanism 2 includes a strip elastic body 21, a first cavity 22, a second cavity 23 and a high temperature resistant magnetic strip 24; the upper surface of the strip elastic body 21 is tightly abutted against the heat absorbing plate 11, the first cavity 22 is arranged at the center of the strip elastic body 21, and the first cavity 22 is engaged with the top end port of the phase change box 3, the number of the second cavities 23 is 2, the two second cavities 23 are arranged on both sides of the first cavity 22, and the second cavity 23 is engaged with the baffle plate 32, the number of the high temperature resistant magnetic strips 24 is 2, and the two high temperature resistant magnetic strips 24 are respectively arranged at both ends of the strip elastic body 21 in the horizontal direction, the high temperature resistant magnetic strip 24 is connected to the strip elastic body 21, and the high temperature resistant magnetic strip 24 is adsorbed on the inner and outer sides of the top end port of the phase change box 3, so that when the high thermal conductivity plate 1 is pressed on the sealing structure 2, the sealing structure 2 plays a sealing role on the phase change box 3.

[0048] like Figure 7 As shown, the cooling device for continuous casting in this embodiment also includes a movable vehicle plate 4; the movable vehicle plate 4 is arranged below the phase change box 3, and the movable vehicle plate 4 is detachably connected to the phase change box 3 to facilitate assembly and transfer, thereby increasing the flexibility of the device; specifically, the movable vehicle plate 4 includes a bottom plate 41, a bottom plate ventilation net 42, a baffle 43, a universal wheel 44 and a push-pull handle 45; the baffle 43 is arranged above the bottom plate 41, and the baffle 43 is fixedly connected to the bottom plate 41, which can play a role in fixing the phase change box 3, the bottom plate ventilation net 42 passes through the middle of the bottom plate 41, and the bottom plate ventilation net 42 is a 10-mesh alloy net, so that the bottom of the phase change box 3 is ventilated, which is helpful for heat dissipation of the phase change box 3; the universal wheel 44 is connected to the bottom end of the bottom plate 41 for easy movement, and the push-pull handle 45 is fixedly connected to the side end of the bottom plate 41 for easy manual operation.

[0049] (I) Working principle and usage:

[0050] 1. Working Principle

[0051] Heat conduction: The heat of the continuous casting cooling bed is transferred to the top of the high heat conductivity plate 1, absorbed by the heat absorbing plate 11, and then efficiently and evenly conducted to the phase change layer 5 in the phase change box 3 by means of a plurality of spaced thin plate-shaped heat transfer plates 12;

[0052] Phase change heat storage: The phase change layer 5 includes the first, second and third phase change layers. Different phase change layers are made of different materials, namely, a high temperature resistant silica gel layer, a ceramic layer and a sodium nitrate-urea eutectic mixture layer. When the third phase change layer (sodium nitrate-urea eutectic mixture layer) is heated to 100°C to 150°C, it absorbs heat and gradually melts from a solid state to a liquid state, transferring the heat to the ceramic layer more fully. The ceramic layer can directly absorb the heat from the cooling bed from the heat transfer plate 12, or absorb the heat through the third phase change layer 53. While the ceramic layer absorbs heat, the high temperature resistant silica gel absorbs the heat from the heat transfer plate 12. Since both ceramic and high temperature resistant silica gel are solid-solid phase change materials, they are still stored in the phase change box 3 in a solid state after the phase change, and will not mix with the third phase change layer. The heat is stored and transferred in stages through different phase change layers to achieve the purpose of cooling. In addition, the high temperature resistant silica gel layer can also buffer the collision between the second phase change material and the bottom of the phase change box.

[0053] Heat dissipation assistance: a ventilation net 31 is provided at the bottom of the first phase change layer 51, which is connected to the atmosphere and is beneficial to the heat dissipation of the high-temperature resistant silicone; an alloy net is provided at the bottom of the movable vehicle plate 4 for ventilation, and the ventilation net helps the overall heat dissipation. In addition, the phase change box 3 made of aluminum alloy is also beneficial to the heat dissipation of the phase change box 3.

[0054] 2. Usage:

[0055] Place the phase change box 3 on the mobile vehicle plate 4, use the enclosure 43 of the mobile vehicle plate 4 to stabilize the phase change box 3, and use the universal wheels 44 and the push-pull handle 45 to conveniently transfer the entire device; when in use, place the upper surface of the heat absorbing plate 11 close to the lower surface of the continuous casting cooling bed, and the phase change layer 5 can spontaneously start the cooling process.

[0056] It should be noted that before the cooling device of the present invention is placed on the lower surface of the cooling bed, some space height needs to be reserved so that the cooling device of the present invention can move freely under the cooling bed. After reaching the preset position, the cooling device of the present invention can be raised again by any method, such as by using a hydraulic device to raise it, by using objects to raise it, etc. This is not a technical difficulty that needs to be overcome in the present invention.

[0057] (II) Comparison of trial experimental data:

[0058] 1. Cooling batch statistics:

[0059] Test 1. In this test, a flat cooling bed was used, and the cooling bed area was divided into three groups: A, B, and C. Carbon steel ingots with a size of 200 mm were cooled. Three days was a statistical node, and statistics were conducted three times. The cooling bed worked continuously, and the cooling batches of each group of cooling beds were counted. The test data are shown in Table 1:

[0060] Table 1

[0061]

[0062] Experiment 2. On the basis of Experiment 1, a continuous casting cooling device in Example 1 was installed to cool down the three groups of regional cooling beds A, B, and C under the same conditions. The experimental data are shown in Table 2:

[0063] Table 2

[0064]

[0065] It can be seen that the installation of a continuous casting cooling device in the present invention effectively improves the cooling efficiency of the cooling bed, and the cooling batches increased by 180% year-on-year.

[0066] 2. Casting embryo cooling temperature-time statistics

[0067] In the first node, three batches of cast embryos from Experiment 1 and Experiment 2 of Group A were randomly selected for timed temperature measurement. The cast embryos from Experiment 1 were selected, and their temperature-time data are shown in Table 3:

[0068] Table 3

[0069]

[0070] The temperature-time data of the casting embryo in Experiment 2 are shown in Table 4:

[0071] Table 4

[0072]

[0073] It can be seen that, especially in the first two hours, the cooling rate of the casting embryo after adopting the cooling device of the present invention is significantly higher than the cooling rate of the casting embryo by natural cooling. Subsequently, because the phase change layer has stored a certain amount of heat, the cooling rate slows down, but gradually stabilizes.

[0074] In summary, the present invention can achieve effective cooling of the continuous casting cooling bed in an energy-saving, environmentally friendly and low-cost manner. Phase change material is a new type of material at the current research and development level, and is currently blank in the field of continuous casting cooling devices. The present invention cleverly uses the high thermal conductivity plate 1 to transfer the heat of the cooling bed to the phase change layer 5 composed of phase change material through the combination of structure, phase change material and high thermal conductivity material, which has great industrial significance and market prospects.

[0075] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

[0076] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cooling device for continuous casting, characterized in that: It comprises a high heat conductivity plate (1), a sealing mechanism (2), a phase change box (3) and a phase change layer (5); The two ends of the high thermal conductivity plate (1) in the horizontal direction are connected to the two ends of the phase change box (3) in the horizontal direction, the top of the high thermal conductivity plate (1) is connected to the top of the phase change box (3), and the upper surface of the high thermal conductivity plate (1) is in close contact with the lower surface of the continuous casting cooling bed; The high thermal conductivity plate (1) partially extends into the phase change box (3); a sealing mechanism (2) is provided at the connection between the high thermal conductivity plate (1) and the phase change box (3); A phase change layer (5) is arranged in the phase change box (3), and the phase change layer (5) is connected to the high thermal conductivity plate (1).

2. A continuous casting cooling device according to claim 1, characterized in that: The high thermal conductivity plate (1) comprises a heat absorbing plate (11) and a heat transfer plate (12); The upper surface of the heat absorbing plate (11) is in close contact with the lower surface of the continuous casting cooling bed, the lower surface of the heat absorbing plate (11) is in close contact with the upper surface of the phase change box (3), the heat absorbing plate (11) is arranged above the heat transfer plate (12), and the heat absorbing plate (11) and the heat transfer plate (12) are fixedly connected; There are a plurality of heat transfer plates (12), and the plurality of heat transfer plates (12) are evenly distributed at the bottom end of the heat absorbing plate (11); one end of the heat transfer plate (12) is fixedly connected to the heat absorbing plate (11); the other end of the heat transfer plate (12) is arranged inside the phase change box (3); the top end of the heat transfer plate (12) is flush with the top end of the phase change box (3); the ratio of the vertical distance from the top end to the bottom end of the heat transfer plate (12) to the vertical distance from the top end to the bottom end of the phase change box (3) is 3:4 to 9:10; the phase change layer (5) is evenly distributed around the heat transfer plate (12), and the heat spreader (12) is in close contact with the phase change layer (5).

3. A continuous casting cooling device according to claim 1, characterized in that: The phase change box (3) is an open box, and the material of the phase change box (3) is an aluminum alloy material.

4. A continuous casting cooling device according to claim 2, characterized in that: The phase change layer (5) comprises a first phase change layer (51), a second phase change layer (52) and a third phase change layer (53); The first phase change layer (51) is arranged below the second phase change layer (52), and the first phase change layer (51) is in close contact with the second phase change layer (52), and the first phase change layer (51) is in close contact with the bottom end of the heat transfer plate (12); The second phase change layer (52) is arranged below the third phase change layer (53); the second phase change layer (52) is in close contact with the third phase change layer (53); the second phase change layer (51) is in close contact with the middle section of the heat transfer plate (12); and the third phase change layer (53) is in close contact with the upper end of the heat transfer plate (12); The material of the first phase change layer (51) is a solid-solid phase change material; The material of the second phase change layer (52) is a solid-solid inorganic phase change material; The material of the third phase change layer (53) is a solid-liquid phase change material.

5. A continuous casting cooling device according to claim 4, characterized in that: The material of the high thermal conductivity plate (1) is a graphite pressed product or a diamond pressed product, the first phase change layer (51) is a high temperature resistant silica gel layer, the second phase change layer (52) is a ceramic layer, and the third phase change layer (53) is a sodium nitrate-urea eutectic mixture layer.

6. A continuous casting cooling device according to claim 4, characterized in that: The phase change box (3) comprises a ventilation net (31); the number of the ventilation nets (31) is multiple, and the multiple ventilation nets (31) are evenly distributed at the bottom end of the first phase change layer (51); the ventilation net (31) connects the first phase change layer (51) with the atmosphere, and the mesh number of the ventilation net (31) is 5 to 20 meshes.

7. A continuous casting cooling device according to claim 3 or 4, characterized in that: A baffle plate (32) is provided at the top end of the phase change box (3), the number of the baffle plates (32) is two, and the two baffle plates (32) are arranged on both sides of the inner and outer sides of the phase change box (3), and the baffle plates (32) fit with the sealing mechanism (2).

8. A continuous casting cooling device according to claim 7, characterized in that: The sealing mechanism (2) comprises a strip elastic body (21), a first cavity (22), a second cavity (23) and a high temperature resistant magnetic strip (24); the upper surface of the strip elastic body (21) is in close contact with the heat absorbing plate (11); the first cavity (22) is arranged at the center of the strip elastic body (21), and the first cavity (22) is engaged with the top end port of the phase change box (3); the number of the second cavities (23) is 2, the two second cavities (23) are arranged on both sides of the first cavity (22), and the second cavity (23) is engaged with the blocking plate (32); the number of the high temperature resistant magnetic strip (24) is 2, and the two high temperature resistant magnetic strips (24) are respectively arranged at both ends of the strip elastic body (21) in the horizontal direction; the high temperature resistant magnetic strip (24) is connected to the strip elastic body (21), and the high temperature resistant magnetic strip (24) is adsorbed on the inner and outer sides of the top end port of the phase change box (3).

9. A continuous casting cooling device according to claim 1, characterized in that: The continuous casting cooling device further comprises a movable vehicle plate (4); the movable vehicle plate (4) is arranged below the phase change box (3), and the movable vehicle plate (4) is detachably connected to the phase change box (3).

10. A continuous casting cooling device according to claim 9, characterized in that: The movable vehicle plate (4) comprises a bottom plate (41), a bottom plate ventilation net (42), a baffle (43), a universal wheel (44) and a push-pull handle (45); the baffle (43) is arranged above the bottom plate (41), the baffle (43) is fixedly connected to the bottom plate (41), the bottom plate ventilation net (42) passes through the middle of the bottom plate (41), and the bottom plate ventilation net (42) is an alloy net with 5 to 20 meshes; the universal wheel (44) is connected to the bottom end of the bottom plate (41), and the push-pull handle (45) is fixedly connected to the side end of the bottom plate (41).

Images