A steel coil insulation heating box

Abstract

The utility model discloses a steel coil insulation heating box, which relates to the technical field of steel coil heating, including a box body, a heating pipe is arranged inside the box body, the heating pipe encloses a heating area for accommodating the steel coil, the heating pipe has a flowing medium for heat transfer, and the heating pipe is provided with an inlet and an outlet for the medium to enter and exit, and the medium is used to absorb heat after flowing to the outside of the box body. The utility model adopts kerosene to circulate and heat the heating pipe, and there are dense heat sinks on the heating pipe. The heating pipe is evenly arranged inside the box body, and the kerosene is heated by waste heat to about 150°C. The steel coil car transports the finished steel coil into the insulation box, and the steel coil is heated and insulated as a whole, so that the mechanical properties of the steel coil reach the optimal temperature of the next process, and deep processing is carried out to reduce the energy loss of the next process, so as to achieve energy saving and emission reduction and greater economic benefits.

Description

Technical Field

[0001] The utility model relates to the technical field of steel coil heating, in particular to a steel coil heat preservation heating box. Background Art

[0002] The steel coil insulation box is a device used to heat and keep steel coils warm. It is suitable for steel coils at room temperature or warm coils coming from the previous process (rolling process). The meaning of insulation is different depending on the type of steel and subsequent deep processing. Some coils that require deep processing need to be at a certain temperature before processing to facilitate stretching or processing in the subsequent process. In addition, insulation is beneficial to the improvement of mechanical properties.

[0003] At present, there are two main technical problems: At present, steel coils are heated by electric heating and insulation (resistance heating) or direct flame heating. Among them, electric heating is achieved by setting a resistance heater inside the box, opening a bottom groove at the bottom of the box and laying tracks, and transporting the steel coils into the box by a transport vehicle. The door of the box is then closed to form a sealed environment. The resistance heater is powered on to generate heat to heat the steel coils on the steel coil car. Although the above two heating methods can heat the steel coils, they consume a lot of energy. There is a lot of waste heat in the steel plant, which cannot be fully utilized. There is also a lack of solutions in the existing technology that can use this waste heat to heat and insulate the steel coils, resulting in low energy utilization. Therefore, it is necessary to design a heat preservation and heating device that can use waste heat to heat the steel coils. Utility Model Content

[0004] The utility model aims to provide a steel coil insulation heating box to solve the technical problem raised by the above background technology that the steel coil heating and insulation devices on the market currently cannot use waste heat to heat and insulate the steel coils.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel coil insulation heating box, comprising a box body, a heating pipe is arranged inside the box body, the heating pipe surrounds a heating area for accommodating the steel coil, a flowing medium for heat transfer is provided in the heating pipe, and the heating pipe is provided with an inlet and an outlet for the medium to enter and exit, the medium is used to absorb heat after flowing to the outside of the box body, and then flow into the heating pipe, and radiate heat to the heating area through the heating pipe.

[0006] As a preferred technical solution of the utility model, the outer surface of the heating pipe is provided with evenly distributed heat sinks.

[0007] As a preferred technical solution of the present utility model, one side of the box body is open, and an openable and closable box door is provided at the opening.

[0008] As a preferred technical solution of the utility model, the bottom of the box is provided with a track matching the transport vehicle; the track passes through the opening and extends to the outside of the box; the box is also provided with legs for supporting the box, so that an empty area is formed between the bottom of the box and the track, and the inner bottom of the box is also provided with a bottom groove connected to the empty area, and the bottom groove is used to allow the part of the transport vehicle where the steel coil is placed to enter the interior of the box.

[0009] As a preferred technical solution of the present utility model, a ladder is provided on the outside of the box.

[0010] As a preferred technical solution of the utility model, a fan connected to the interior of the box is provided on the top of the box.

[0011] As a preferred technical solution of the utility model, the heating pipeline includes a plurality of heating components connected in series, and the heating components include:

[0012] Two main pipes arranged axially symmetrically with each other;

[0013] A plurality of branch pipes are arranged between two of the main pipes, the branch pipes are arranged at intervals along the central axis of the main pipe, and the heat sink is arranged on the outer surface of the branch pipe;

[0014] A connecting pipe provided on the main pipe;

[0015] A connector used to connect adjacent connecting pipes.

[0016] As a preferred technical solution of the utility model, the connecting part includes a flange and a hose, a sealing gasket is provided on one side of the flange, and connecting bolts are provided between adjacent flanges, the hose passes through a pipe groove opened on the side wall of the box body, and a high-temperature resistant sealant is provided at the connecting gap between the pipe groove and the hose.

[0017] As a preferred technical solution of the utility model, a mounting plate is welded to the inner wall of the box body, and the mounting plate is provided with a pipe clamp, and the pipe clamp is used to fix the main pipe.

[0018] As a preferred technical solution of the utility model, the medium is kerosene.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The utility model adopts kerosene to carry out circulation heating of the heating pipe, and there are dense heat sinks on the heating pipe, and the heating pipe is evenly arranged inside the box body, and the kerosene is heated by waste heat to reach about 150°C. The steel coil car transports the finished steel coil, which enters the insulation box, and heats and insulates the steel coil as a whole, so that the mechanical properties of the steel coil reach the optimal temperature of the next process, and deep processing is carried out, thereby reducing the energy loss of the next process, achieving energy saving and emission reduction and greater economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0022] Figure 2 It is a side view structural schematic diagram of the utility model;

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the main pipe, branch pipe and heat sink of the utility model;

[0024] Figure 4 It is a schematic diagram of the top view structure of the utility model;

[0025] Figure 5 For the utility model Figure 4 The enlarged structural diagram at A in the middle;

[0026] Figure 6 It is a schematic diagram of the connection structure of the connecting pipe and the hose of the utility model.

[0027] In the figure: 1. box body; 2. support legs; 3. box door; 4. pneumatic control device; 5. bottom trough; 6. ladder; 7. track; 8. transport vehicle; 9. steel coil; 10. mounting plate; 11. pipe clamp; 12. main pipe; 13. connecting pipe; 14. flange; 15. branch pipe; 16. heat sink; 17. hose; 18. connecting bolt; 19. sealing gasket; 20. pipe trough; 21. high temperature resistant sealant; 22. top trough. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] See also Figure 1-Figure 6The utility model provides a technical solution: comprising a box body 1, a heating pipe is arranged inside the box body 1, the heating pipe surrounds a heating area for accommodating a steel coil 9, a medium for heat transfer flows in the heating pipe, and the heating pipe is provided with an inlet and an outlet for the medium to enter and exit, the medium is used to absorb heat after flowing to the outside of the box body 1, and then flows into the heating pipe, and heat is radiated to the heating area through the heating pipe; in this embodiment, the medium is kerosene;

[0030] The above technical solution can utilize waste heat to heat the steel coil 9, so that the mechanical properties of the steel coil 9 reach the optimal temperature of the next process, and further processing can be carried out to reduce the energy loss of the next process, thereby achieving energy conservation, emission reduction and greater economic benefits. The reason why kerosene is selected as the medium is that kerosene has a high boiling point and low cost, so it has a high cost performance. There is a lot of waste heat in the steel plant that can be collected. For example, the heating furnace of the steel plant usually has a heat recovery function to recover high-temperature gas with heat radiation. The high-temperature gas is input into a container filled with kerosene through a heat input pipeline. The heat input pipeline is evenly arranged in the container and is in full contact with the kerosene. The heat input pipeline is The inlet pipe has good thermal conductivity, so the kerosene that contacts the heat input pipe can be quickly heated. A pressure pump is generally provided at the bottom of the container, which pushes the kerosene in the container into the inlet of the heating pipe. The outlet of the heating pipe is also connected to the container to realize the recycling of the kerosene. When the kerosene with heat enters the heating pipe, the kerosene will transfer the heat to the heating pipe and the heat sink 16 on its surface. Since the heat sink 16 is provided, the heat dissipation area can be increased, and the heating efficiency of the steel coil 9 is improved. The heating temperature can reach about 150°C. The heating temperature is controlled intelligently. This heating principle is similar to heating by a heater.

[0031] like Figure 2 and Figure 3 As shown, in this embodiment, the heating pipeline includes a plurality of heating components connected in series, 3 in this embodiment, and are respectively arranged on the other three sides of the four sides of the box body 1 except the box door 3, forming a three-sided surrounding of the steel coil 9, and the heating components include: two main pipes 12 arranged axially symmetrically with each other; a plurality of branch pipes 15 arranged between the two main pipes 12, the branch pipes 15 are arranged at intervals along the central axis direction of the main pipe 12, and the heat sink 16 is arranged on the outer surface of the branch pipe 15; a connecting pipe 13 provided on the main pipe 12; a connecting piece for connecting adjacent connecting pipes 13;

[0032] like Figure 6 As shown, in this embodiment, the connecting member includes a flange 14 and a hose 17, a sealing gasket 19 is provided on one side of the flange 14, and connecting bolts 18 are provided between adjacent flanges 14, the hose 17 passes through a pipe groove 20 provided on the side wall of the box body 1, and a high temperature resistant sealant 21 is provided at the connection gap between the pipe groove 20 and the hose 17;

[0033] like Figure 3 As shown, a mounting plate 10 is welded to the inner wall of the box body 1, and a pipe clamp 11 is provided on the mounting plate 10. The pipe clamp 11 is used to fix the main pipe 12;

[0034] The above technical solution can be used to heat the steel coil 9. By arranging a mounting plate 10 on the inner wall of the box body 1, the main pipe 12 can be fixed in cooperation with the pipe clamp 11, which is convenient for installation and disassembly. By arranging a flange 14 and a hose 17, the main pipes 12 in the three heating components can be connected in series with each other. During specific use: the kerosene in the container is pushed into the hose 17 outside the box body 1 by a pressure pump, and the hose 17 cooperates with the connecting pipe 13 to send the kerosene into the main pipe 12. The main pipes 12 in adjacent heating components are connected to each other through the hose 17, and the main pipe 12 of one of the heating components is connected to the container to realize the recycling of kerosene. When the hot kerosene enters the main pipe 12, it will gradually enter the branch pipe 15, so that the branch pipe 15 is heated, and the branch pipe 15 drives the heat sink 16 on its surface to heat up synchronously, so that the steel coil 9 is heated by the heat sink 16.

[0035] Further, such as Figure 1 and Figure 2 As shown, the bottom of the box body 1 is provided with legs 2; the rear side of the box body 1 is provided with a ladder 6;

[0036] Further, such as Figure 2 and Figure 3 As shown, one side of the box body 1 is open, and an openable and closable box door 3 is provided at the opening, and the box door 3 is connected to a pneumatic control device 4, and the pneumatic control device 4 is used to control the opening or closing of the box door 3. A track 7 matching the transport vehicle 8 is provided at the bottom of the box body 1; the track 7 passes through the opening and extends to the outside of the box body 1; the box body 1 is also provided with a leg 2 for supporting the box body 1, so that an empty area is formed between the bottom of the box body 1 and the track 7, and the inner bottom of the box body 1 is also provided with a bottom groove 5 connected to the empty area, and the bottom groove 5 is used to allow the part of the transport vehicle 8 where the steel coil 9 is placed to enter the inside of the box body 1;

[0037] The above technical solution can realize automatic loading and unloading. When loading is required, the box door 3 is opened by the pneumatic control device 4, and the steel coil 9 is hoisted onto the transport vehicle 8 by the hanging device. The transport vehicle 8 moves along the track 7 to the bottom groove 5 at the lower end of the box body 1. At this time, the steel coil 9 is located in the heating area, and the box door 3 is closed again by the pneumatic control device 4, so that the box body 1 can be sealed to facilitate heating and heat preservation of the steel coil 9. When the steel coil 9 is needed, the box door 3 is reopened, and the steel coil 9 is pulled out by the transport vehicle 8, and then the steel coil 9 is subjected to subsequent deep processing. Since there is a certain gap between the transport vehicle 8 and the bottom trough 5, the gap is usually provided with a sealing element to ensure less heat loss. The inner wall of the box body 1 is equipped with thermal insulation materials to reduce heat loss. It should be pointed out that the sealing effect of the sealing element is not particularly good, and it is difficult to achieve complete seamlessness in actual work, but this small part of heat loss can be ignored. In addition, the material pad of the transport vehicle 8 can use high-temperature resistant fluororubber with a maximum temperature of 210°C and conventional rubber of 80 to 120°C. The ladder 6 can facilitate maintenance personnel to climb onto the box body 1 and perform maintenance on the high part of the box body 1.

[0038] Further, such as Figure 1 As shown, a fan connected to the interior of the box 1 is provided at the top of the box 1. In this embodiment, a top groove 22 is opened at the top of the box 1, and the fan is arranged in the top groove 22;

[0039] The above technical solution can make the temperature inside the box 1 more uniform. By setting a fan, the air flow inside the box 1 can be driven to make the temperature inside the box 1 relatively uniform, thereby achieving uniform heating of the steel coil 9 and preventing excessive local temperature differences in the steel coil 9.

[0040] Working principle: The heating furnace of a steel plant usually has a heat recovery function to recover high-temperature gas with heat radiation. When in use, the high-temperature gas is input into a container filled with kerosene through a heat input pipe. The heat input pipe is evenly arranged in the container and is in full contact with the kerosene. The metal heat input pipe has good thermal conductivity, so the kerosene in contact with the heat input pipe can be quickly heated. A pressure pump is generally provided at the bottom of the container, which pushes the high-temperature kerosene in the container into the inlet of the heating pipe, and the outlet of the heating pipe is also connected to the container to realize the recycling of kerosene. When the high-temperature kerosene enters the heating pipe, the kerosene will transfer heat to the heating pipe and the heat sink 16 on its surface. Since the heat sink 16 is provided, the heat dissipation area can be increased, and the heating efficiency of the steel coil 9 can be improved, thereby realizing the insulation heating of the steel coil 9 by waste heat.

[0041] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0042] 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-restrictive 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 be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A steel coil heat preservation and heating box, comprising a box body (1), characterized in that: A heating pipe is provided inside the box (1), and the heating pipe encloses a heating area for accommodating the steel coil (9). A medium for heat transfer flows inside the heating pipe, and the heating pipe is provided with an inlet and an outlet for the medium to enter and exit. The medium is used to absorb heat after flowing to the outside of the box (1), and then flows into the heating pipe to radiate heat to the heating area through the heating pipe.

2. The steel coil insulation heating box according to claim 1 is characterized in that: The outer surface of the heating pipe is provided with evenly distributed heat sinks (16).

3. The steel coil insulation heating box according to claim 1 or 2, characterized in that: One side of the box body (1) is open, and an openable and closable box door (3) is provided at the opening.

4. The steel coil insulation heating box according to claim 3 is characterized in that: The bottom of the box (1) is provided with a track (7) matching the transport vehicle (8); the track (7) passes through the opening and extends to the outside of the box (1); the box (1) is also provided with a leg (2) for supporting the box (1) so that an empty area is formed between the bottom of the box (1) and the track (7); the inner bottom of the box (1) is also provided with a bottom groove (5) connected to the empty area, and the bottom groove (5) is used to allow the part of the transport vehicle (8) on which the steel coil (9) is placed to enter the interior of the box (1).

5. The steel coil insulation and heating box according to claim 4, characterized in that: A ladder (6) is provided on the outside of the box body (1).

6. The steel coil insulation heating box according to claim 4 or 5, characterized in that: A fan connected to the interior of the box (1) is provided on the top of the box (1).

7. The steel coil insulation and heating box according to claim 2, characterized in that: The heating pipeline includes a plurality of heating components connected in series, and the heating components include: Two main pipes (12) are arranged axially symmetrically with each other; A plurality of branch pipes (15) are arranged between two of the main pipes (12), the branch pipes (15) are arranged at intervals along the central axis direction of the main pipe (12), and the heat sink (16) is arranged on the outer surface of the branch pipe (15); A connecting pipe (13) provided on the main pipe (12); A connecting piece used to connect adjacent connecting pipes (13).

8. The steel coil insulation and heating box according to claim 7, characterized in that: The connecting piece comprises a flange (14) and a hose (17); a sealing gasket (19) is provided on one side of the flange (14); connecting bolts (18) are provided between adjacent flanges (14); the hose (17) passes through a pipe groove (20) provided on a side wall of the box body (1); and a high-temperature resistant sealant (21) is provided at a connection gap between the pipe groove (20) and the hose (17).

9. The steel coil insulation and heating box according to claim 7, characterized in that: A mounting plate (10) is welded to the inner wall of the box body (1), and the mounting plate (10) is provided with a pipe clamp (11), and the pipe clamp (11) is used to fix the main pipe (12).

10. The steel coil insulation and heating box according to claim 1, characterized in that: The medium is kerosene.

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