Waste heat utilization device for continuous casting billet conveying

Abstract

The utility model discloses a waste heat utilization device for conveying continuous casting billets, which belongs to the technical field of steel production and comprises a conveying rack, a plurality of conveying rollers are rotatably connected onto the conveying rack, the continuous casting billets are conveyed onto the conveying rollers, a recovery box is arranged above the conveying rack, a waste heat recovery component is arranged on the recovery box, and the waste heat recovery component is connected with the conveying rack. One side of the waste heat recovery assembly communicates with a water inlet pipe through a pipeline, the water inlet pipe is arranged on one side of the recovery box body, the side, away from the water inlet pipe, of the waste heat recovery assembly communicates with a water outlet pipe, and the water outlet pipe is located on the side, away from the water inlet pipe, of the recovery box body. The waste heat recovery assembly heats boiler water circulating in the waste heat recovery assembly to the saturation temperature, the boiler water heated to the saturation temperature is guided out through the water outlet pipe, the protection assembly can effectively avoid heat dissipation in the recovery box body, waste heat of continuous casting blanks conveyed on the conveying rollers can be effectively utilized, and the continuous casting blanks can be recycled. The boiler water is heated or enters a deaerator to serve as make-up water.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel production, in particular to a waste heat utilization device for conveying continuous casting billets. Background Art

[0002] In modern steel production, the continuous casting process is a key production link, which is directly related to the quality of steel and production efficiency. In the continuous casting process, the continuous casting billet needs to go through a series of processes after coming out of the crystallizer, such as fire cutting, marking, etc., and then be transported to the raw material warehouse through rollers. However, in this transportation process, the waste heat generated by the continuous casting billet is often wasted.

[0003] In order to facilitate the utilization of the waste heat generated by the continuous casting billets transported on the conveyor rollers, the traditional method is to install roller insulation covers on the conveyor rollers to reduce the heat loss of the continuous casting billets and facilitate their subsequent production. However, the waste heat generated by the continuous casting billets on the conveyor rollers has not been effectively utilized. Utility Model Content

[0004] The purpose of the utility model is to provide a waste heat utilization device for conveying continuous casting billets, so as to solve at least one aspect of the problems and defects raised in the above-mentioned background technology.

[0005] A waste heat utilization device for conveying continuous casting billets is provided, comprising a conveying frame, a plurality of conveying rollers are rotatably connected to the conveying frame, the continuous casting billets are conveyed on the plurality of conveying rollers, a recovery box is arranged above the conveying frame, a waste heat recovery component is arranged on the recovery box, one side of the waste heat recovery component is connected to a water inlet pipe through a pipeline, the water inlet pipe is arranged on one side of the recovery box, a side of the waste heat recovery component away from the water inlet pipe is connected to a water outlet pipe, the water outlet pipe is located on a side of the recovery box away from the water inlet pipe, and a protective component is also arranged on the recovery box.

[0006] Furthermore, the waste heat recovery component includes a plurality of waste heat recovery pipes, which are symmetrically arranged on the recovery box along the length direction, and the plurality of waste heat recovery pipes are interconnected through pipelines.

[0007] Furthermore, the waste heat recovery pipes are each provided with a plurality of fins.

[0008] Furthermore, a first regulating valve is provided at the water inlet pipe.

[0009] Furthermore, a thermocouple and a water pressure sensor are respectively provided at the water outlet pipe.

[0010] Furthermore, a first electric relief valve is provided on the water outlet pipe, and a first steam dispersing pipe is provided on the first electric relief valve.

[0011] Furthermore, a second regulating valve is provided at the water outlet end of the water outlet pipe, a second electric relief valve is provided between the second regulating valve and the first electric relief valve, and a second steam dispersing pipe is provided on the second electric relief valve.

[0012] Furthermore, the protection component includes a protection cover plate and a thermal insulation cotton board, the protection cover plate is detachably connected above the recovery box, a thermal insulation cotton board is arranged below the protection cover plate, and the thermal insulation cotton board is arranged between the protection cover plate and the recovery box.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] A recovery box is installed above the continuous casting embryos transported on the conveying rollers. During the transportation process, boiler water enters the waste heat recovery component from the water inlet pipe, and the waste heat recovery component is used to absorb the heat emitted by the continuous casting embryos transported on the conveying rollers. The boiler water circulating inside the waste heat recovery component is heated to the saturation temperature, and the boiler water heated to the saturation temperature is discharged from the water outlet pipe. The protective component can effectively avoid the heat dissipation inside the recovery box, and can effectively utilize the waste heat of the continuous casting embryos transported on the conveying rollers for boiler water heating or entering the deaerator as supplementary water. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of a waste heat utilization device for conveying continuous casting billets, in a front view and in cross section;

[0017] Figure 2 A schematic diagram of the top view of the internal structure of the recycling box provided by an embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of an axonometric three-dimensional structure provided in an embodiment of the utility model.

[0019] In the figure: 1. conveying frame; 2. conveying roller; 3. recovery box; 4. waste heat recovery component; 41. waste heat recovery pipe; 411. fin; 5. water inlet pipe; 6. water outlet pipe; 7. protection component; 6. water outlet pipe; 7. protection component; 71. protection cover plate; 72. insulation cotton board; 8. first regulating valve; 9. thermocouple; 10. water pressure sensor; 11. first electric relief valve; 12. first steam dispersing pipe; 13. second regulating valve; 14. second electric relief valve; 15. second steam dispersing pipe; 111. continuous casting embryo. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-3 As shown, in the embodiment of the utility model, a waste heat utilization device for conveying continuous casting billets includes a conveying frame 1, a plurality of conveying rollers 2 are rotatably connected to the conveying frame 1, and a continuous casting billet 111 is conveyed on the plurality of conveying rollers 2, a recovery box 3 is arranged above the conveying frame 1, a waste heat recovery component 4 is arranged on the recovery box 3, one side of the waste heat recovery component 4 is connected to a water inlet pipe 5 through a pipeline, the water inlet pipe 5 is arranged on one side of the recovery box 3, a side of the waste heat recovery component 4 away from the water inlet pipe 5 is connected to a water outlet pipe 6, the water outlet pipe 6 is located on the side of the recovery box 3 away from the water inlet pipe 5, and a protective component 7 is also arranged on the recovery box

[0023] A recovery box 3 is installed above the continuous casting embryo 111 transported on the conveying roller 2. During the transportation process, boiler water enters the waste heat recovery component 4 from the water inlet pipe 5, and the waste heat recovery component 4 is used to absorb the heat emitted by the continuous casting embryo 111 transported on the conveying roller 2. The boiler water flowing inside the waste heat recovery component 4 is heated to the saturation temperature. The boiler water heated to the saturation temperature is discharged from the water outlet pipe 6, and the protection component 7 can effectively prevent the heat dissipation inside the recovery box 3, and can effectively utilize the waste heat of the continuous casting embryo 111 transported on the conveying roller 2 for boiler water heating or entering the deaerator as supplementary water.

[0024] In one embodiment, see Figure 1 , Figure 2 and Figure 3As shown, the waste heat recovery component 4 includes a plurality of waste heat recovery pipes 41, which are symmetrically arranged on the recovery box 3 along the length direction, and the plurality of waste heat recovery pipes 41 are interconnected through pipes. By symmetrically arranging the waste heat recovery pipes 41 on the recovery box 3, the surface area of ​​heat absorption can be increased, and the efficiency of waste heat recovery can be improved. The waste heat recovery pipes 41 are interconnected through pipes to form a continuous circulation pipe, and the heat emitted by the continuous casting embryo 111 transported on the conveying roller 2 is absorbed through the circulation pipe. The entire waste heat recovery component 4 is used to heat the boiler water circulating inside to the saturation temperature, and the boiler water heated to the saturation temperature is discharged from the outlet pipe 6. The waste heat is used to heat the boiler water, increase its temperature to the saturation temperature, and then discharge it for utilization, thereby realizing the effective recovery and reuse of waste heat, saving energy and improving energy utilization efficiency.

[0025] In one embodiment, see Figure 1 , Figure 2 and Figure 3 As shown, a plurality of fins 411 are provided on the waste heat recovery pipe 41. The provision of the plurality of fins 411 can further increase the surface area of ​​the waste heat recovery pipe 41 and enhance the heat transfer effect. The design of the fins 411 can increase the surface area of ​​the pipe, thereby enhancing the heat exchange with the surrounding medium, so that the waste heat can be absorbed and utilized more effectively.

[0026] In one embodiment, see Figure 1 and Figure 3 As shown, a first regulating valve 8 is provided at the water inlet pipe 5 for controlling the flow in the water inlet pipe 5 to ensure that an appropriate amount of water flows into the waste heat recovery component 4 .

[0027] In one embodiment, see Figure 1 and Figure 3 As shown, a thermocouple 9 and a water pressure sensor 10 are respectively provided at the water outlet pipe 6. The provision of the thermocouple 9 and the water pressure sensor 10 enables the system to monitor the temperature and pressure of the outlet water in real time, thereby timely adjusting and controlling the operating state of the waste heat recovery system, ensuring stable operation of the system and providing efficient heat recovery effect.

[0028] In one embodiment, see Figure 1 and Figure 3As shown, the outlet pipe 6 is also provided with a first electric relief valve 11, which is used to adjust the system pressure. When the pressure is too high, the opening of the first electric relief valve 11 is automatically adjusted to increase the pressure for releasing the pressure; when the system pressure is too low, the opening of the first electric relief valve 11 is reduced to increase the pressure, and the system pressure of the outlet pipe 6 is adjusted to be within the range of 0.01-0.04MPa. The first electric relief valve 11 is provided with a first steam dispersion pipe 12. The first electric relief valve 11 is used to release the pressure when the system pressure is too high to prevent the system from being damaged due to excessive pressure. When the pressure in the outlet pipe 6 exceeds the safety range, the first electric relief valve 11 will automatically open and release the excess pressure into the environment, thereby protecting the system from the influence of excessive pressure. The first steam dispersion pipe 12 is used in combination with the first electric relief valve 11. When the first electric relief valve 11 is opened, the first steam dispersion pipe 12 will discharge the steam into the environment to ensure that the steam in the system does not exceed the safety range, thereby ensuring the safe operation of the system.

[0029] In one embodiment, see Figure 1 and Figure 3 As shown, a second regulating valve 13 is also provided at the water outlet end of the water outlet pipe 6. The second regulating valve 13 is located at the water outlet end of the water outlet pipe 6 and is mainly used to control the flow and pressure in the water outlet pipe 6 to ensure that the water flow is within a set range. A second electric relief valve 14 is provided between the second regulating valve 13 and the first electric relief valve 11. A second steam dispersion pipe 15 is provided on the second electric relief valve 14. When the first electric relief valve 11 cannot meet the regulation demand of the system pressure, when the system pressure of the water outlet pipe 6 is greater than 0.04MPa, the second electric relief valve 14 will automatically open to release excess pressure and steam to protect the system from overpressure. The second steam dispersion pipe 15 is connected to the second electric relief valve 14 to discharge excess steam released by the second electric relief valve 14. The steam can be discharged into the environment in time through the second steam dispersion pipe 15 to prevent safety hazards caused by excessive accumulation of steam in the system.

[0030] In one embodiment, see Figure 1 and Figure 3As shown, the protection component 7 includes a protection cover plate 71 and a heat-insulating cotton board 72. The protection cover plate 71 is detachably connected above the recovery box 3. A heat-insulating cotton board 72 is arranged below the protection cover plate 71. The heat-insulating cotton board 72 is arranged between the protection cover plate 71 and the recovery box 3. The protection cover plate 71 is detachably connected above the recovery box 3 to shield the part above the recovery box 3 to prevent the operator from contacting possible high-temperature surfaces or running mechanical parts to reduce the risk of accidental injury. The heat-insulating cotton board 72 is arranged below the protection cover plate 71, between the protection cover plate 71 and the recovery box 3. The function of the heat-insulating cotton board 72 is to provide thermal insulation to prevent the heat inside the recovery box 3 from dissipating to the external environment, while protecting the operator from the influence of high temperature.

[0031] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A waste heat utilization device for continuous casting slab transportation, comprising a conveyor frame (1), characterized in that: The conveyor frame (1) is rotatably connected to a plurality of conveyor rollers (2), and the plurality of conveyor rollers (2) convey the continuous casting embryo (111). A recovery box (3) is arranged above the conveyor frame (1), and a waste heat recovery component (4) is arranged on the recovery box (3). One side of the waste heat recovery component (4) is connected to a water inlet pipe (5) through a pipeline, and the water inlet pipe (5) is arranged on one side of the recovery box (3). The side of the waste heat recovery component (4) away from the water inlet pipe (5) is connected to a water outlet pipe (6), and the water outlet pipe (6) is located on the side of the recovery box (3) away from the water inlet pipe (5). A protective component (7) is also arranged on the recovery box (3).

2. The waste heat utilization device for continuous casting slab transportation according to claim 1, characterized in that: The waste heat recovery component (4) comprises a plurality of waste heat recovery pipes (41), the plurality of waste heat recovery pipes (41) are symmetrically arranged on the recovery box (3) along the length direction, and the plurality of waste heat recovery pipes (41) are interconnected through pipelines.

3. The waste heat utilization device for continuous casting slab transportation according to claim 2, characterized in that: The waste heat recovery pipe (41) is provided with a plurality of fins (411).

4. The waste heat utilization device for continuous casting slab transportation according to claim 1, characterized in that: The water inlet pipe (5) is provided with a first regulating valve (8).

5. The waste heat utilization device for continuous casting slab transportation according to claim 1, characterized in that: The water outlet pipe (6) is respectively provided with a thermocouple (9) and a water pressure sensor (10).

6. The waste heat utilization device for continuous casting slab transportation according to claim 5, characterized in that: The water outlet pipe (6) is also provided with a first electric relief valve (11), and the first electric relief valve (11) is provided with a first steam dispersing pipe (12).

7. The waste heat utilization device for continuous casting slab transportation according to claim 6, characterized in that: A second regulating valve (13) is also provided at the water outlet end of the water outlet pipe (6), a second electric relief valve (14) is provided between the second regulating valve (13) and the first electric relief valve (11), and a second steam dispersing pipe (15) is provided on the second electric relief valve (14).

8. The waste heat utilization device for continuous casting slab transportation according to claim 3, characterized in that: The protection assembly (7) comprises a protection cover plate (71) and a heat-insulating cotton plate (72); the protection cover plate (71) is detachably connected above the recovery box (3); a heat-insulating cotton plate (72) is arranged below the protection cover plate (71); and the heat-insulating cotton plate (72) is arranged between the protection cover plate (71) and the recovery box (3).

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