Rapid cooling structure for continuous casting square billet
By designing an adjustable spray head distance and an independently controlled rapid cooling structure, the problem of uneven cooling of the billet was solved, achieving uniform cooling of the billet surface and energy reuse, and reducing the risk of billet deformation and cracking.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-03-13
AI Technical Summary
In traditional continuous casting, uneven cooling of the billet leads to cracks, and the existing fixed nozzle position cannot adapt to changes in the billet's condition.
A rapid cooling structure was designed, including a conveyor frame with adjustable spray head distance and independent water pump control. Combined with a temperature monitor, the cooling flow rate is adjusted in real time to achieve uniform cooling of the billet surface. Heat energy is recovered through a collection box for energy reuse.
It achieves uniform cooling of the billet surface, reduces local overheating or overcooling, lowers the risk of deformation and cracking caused by thermal stress, and improves energy utilization efficiency.
Smart Images
Figure CN223989045U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of continuous casting billet technology, specifically a rapid cooling structure for continuous casting billets. Background Technology
[0002] Continuous casting billets are steel billets with square cross-sections produced by continuous casting machines and used to process profiles.
[0003] The continuous casting billet production process begins by pouring molten steel from the ladle into the tundish. The tundish buffers and distributes the molten steel, allowing it to enter the crystallizer. The molten steel is then rapidly cooled by the cooling walls and cooling water of the crystallizer. As the molten steel solidifies, the billet gradually elongates. After the billet leaves the crystallizer, it undergoes secondary cooling, achieved by spraying water or mist.
[0004] Secondary cooling involves spraying water onto the billet with a liquid core to ensure complete solidification. In traditional continuous casting, the internal state and surface temperature of the billet are constantly changing. The positions of multiple sets of nozzles are fixed, so the cooling range and effect of each nozzle are relatively fixed. When the state of the billet changes, the fixed nozzle positions make it difficult to adjust the cooling intensity, which can easily lead to uneven cooling and cracks in the billet.
[0005] Therefore, this utility model provides a rapid cooling structure for continuous casting billets. Utility Model Content
[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.
[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A rapid cooling structure for continuous casting billets, comprising a conveyor frame; a fixed frame is fixedly connected to the top of the conveyor frame; two sliding grooves are opened on the side wall of the fixed frame; the two sliding grooves are arranged opposite to each other; a slide rail is provided on the top of the fixed frame; multiple sliders are slidably connected in the middle of the sliding grooves; a driver is fixedly connected to the end of each slider; multiple pulleys are tumbledly connected in the middle of the slide rail; the side wall of each pulley is fixedly connected to the middle of the driver; a rotating seat is fixedly connected to the pulley away from the driver; a fixed pipe is fixedly connected to the middle of two corresponding rotating seats; multiple spray heads are fixedly connected to the middle of the fixed pipe; the multiple spray heads are equidistantly distributed; the fixed... A water outlet pipe is fixedly connected to one end of the fixed pipe; multiple water pumps are fixedly connected to the side wall of the conveying frame; the end of the water outlet pipe is fixedly connected to the middle of the water pump; and a water inlet pipe is fixedly connected to the middle of the water pump. This structure allows for rapid adjustment of the distance between the spray heads, adapting to the gradual increase in the thickness of the billet shell and the changes in the thermal resistance of the solidified shell. This ensures uniform cooling of all parts of the billet surface, reduces overlapping or missing areas of water flow on the billet surface, effectively reduces localized overheating or undercooling of the billet, reduces the internal temperature gradient of the billet, and minimizes thermal stress caused by temperature differences, thus reducing deformation and cracks on the billet surface. Furthermore, by configuring a separate water pump for each fixed pipe, the water volume and pressure can be controlled individually.
[0008] Preferably, two fixing rings are fixedly connected to the middle of the fixing frame; the two fixing rings are arranged opposite each other; a fastening bolt is installed in the middle of the fixing ring; a fixing rod is fixedly connected to the middle of the two fixing rings; a temperature monitor is installed at the bottom of the fixing rod; the temperature monitor is installed at one end of the fixing frame; the above structure can monitor the surface temperature of the casting in real time, effectively provide accurate temperature data, facilitate timely adjustment of cooling flow to obtain the best cooling effect, and enable the temperature monitor to flexibly adapt to different height positions of the casting ingot, thereby more accurately obtaining temperature data of various parts of the casting ingot. Through precise adjustment and calibration of the temperature monitor, temperature deviations caused by improper positioning or measurement errors can be reduced.
[0009] Preferably, a filter box is fixedly connected to the end of the water inlet pipe; a first filter plate is fixedly connected to the middle of the filter box; a connecting pipe is fixedly connected to the side wall of the first filter plate; the filter box with the above structure can effectively filter out impurities and particulate matter in the cooling water, reduce the wear and blockage caused by these impurities entering the water pump or spray head, reduce the corrosion and wear of impurities on the equipment, and keep the water outlet pipe and spray head unobstructed, reducing the problem of reduced flow and reduced cooling efficiency caused by impurities clogging the water.
[0010] Preferably, a rotating rod is rotatably connected to the middle of the water outlet pipe; a baffle is fixedly connected to the end of the rotating rod; the baffle is fixedly connected inside the water outlet pipe; the baffle is fixedly connected to the end near the water pump; a sealing ring is fixedly connected to the side wall of the baffle; the sealing ring is tightly fitted to the inner side wall of the water outlet pipe; the above structure enables precise adjustment of the cooling water flow rate, thereby allowing flexible adjustment according to the actual cooling needs of the billet. Precise flow rate adjustment can avoid excessive consumption of cooling water, thereby reducing energy consumption and costs.
[0011] Preferably, a collection box is fixedly connected to the bottom of the conveyor frame; the two ends of the collection box are set with slopes; a drain pipe is fixedly connected to the side wall of the collection box; through the above structure, the cooling water heated by the billet contains a large amount of heat energy. By collecting the heat energy in the cooled water, the water containing heat can be used for other processes or heating systems, thereby realizing the reuse of energy and improving the overall energy utilization efficiency. Furthermore, by collecting and analyzing the changes in the cooling water temperature, the cooling rate of the billet can be precisely controlled.
[0012] Preferably, a second filter plate is installed in the middle of the collection box; the second filter plate is fixed to the middle of the collection box; the above structure can effectively filter impurities and particulate matter in the cooling water inside the collection box, making the water in the middle of the collection box purer. Filtration can reduce wastewater discharge and allow the collected water to be reused, effectively increasing the utilization rate of water resources.
[0013] The beneficial effects of this utility model are as follows:
[0014] 1. The present invention provides a rapid cooling structure for continuous casting billets. This structure allows for rapid adjustment of the distance between spray heads, adapting to the gradual increase in billet shell thickness and changes in solidification shell thermal resistance. This ensures uniform cooling of all parts of the billet surface, reduces overlapping or missing areas of water flow on the billet surface, effectively reduces local overheating or undercooling of the billet, reduces internal temperature gradients, and minimizes thermal stress caused by temperature differences, thus reducing surface deformation and cracks. Furthermore, by equipping each fixed pipe with a separate water pump, the water volume and pressure can be controlled individually.
[0015] 2. The rapid cooling structure for continuous casting billets described in this utility model can monitor the surface temperature of the billet in real time, effectively provide accurate temperature data, facilitate timely adjustment of cooling flow to obtain the best cooling effect, and enable the temperature monitor to flexibly adapt to different height positions of the billet, thereby more accurately obtaining temperature data of various parts of the billet. Through precise adjustment and calibration of the temperature monitor, temperature deviations caused by improper position or measurement errors can be reduced. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings.
[0017] Figure 1 This is a perspective view of the present invention;
[0018] Figure 2 This is a schematic diagram of the structure of the spray head in this utility model;
[0019] Figure 3 This is a cross-sectional view of the filter box in this utility model;
[0020] Figure 4 This is a schematic diagram of the structure of the collection box in this utility model.
[0021] In the diagram: 1. Conveyor frame; 10. Fixed frame; 11. Sliding groove; 12. Slide rail; 13. Slider; 14. Driver; 15. Pulley; 16. Rotating seat; 17. Fixed pipe; 18. Spray head; 19. Water outlet pipe; 111. Water pump; 112. Water inlet pipe; 2. Fixed ring; 21. Fastening bolt; 22. Fixed rod; 23. Temperature monitor; 3. Filter box; 31. First filter plate; 32. Connecting pipe; 4. Baffle; 41. Rotating rod; 42. Sealing ring; 5. Collection box; 51. Drain pipe; 6. Second filter plate; 7. Protective cover. Detailed Implementation
[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0023] like Figures 1 to 4As shown, an embodiment of the present invention provides a rapid cooling structure for a continuous casting billet, comprising a conveyor frame 1; a fixed frame 10 is fixedly connected to the top of the conveyor frame 1; two sliding grooves 11 are formed on the side wall of the fixed frame 10; the two sliding grooves 11 are arranged opposite to each other; a slide rail 12 is provided on the top of the fixed frame 10; a plurality of sliders 13 are slidably connected to the middle of the sliding grooves 11; a driver 14 is fixedly connected to the end of the slider 13; a plurality of pulleys 15 are tumbledly connected to the middle of the slide rail 12; the side wall of the pulleys 15 is fixedly connected to the middle of the driver 14; a rotating seat 16 is fixedly connected to the side of the pulleys 15 away from the driver 14; two A fixed pipe 17 is fixedly connected to the middle of the corresponding rotating seat 16; multiple spray heads 18 are fixedly connected to the middle of the fixed pipe 17; the multiple spray heads 18 are equidistantly distributed; a water outlet pipe 19 is fixedly connected to one end of the middle of the fixed pipe 17; multiple water pumps 111 are fixedly connected to the side wall of the conveying frame 1; the end of the water outlet pipe 19 is fixedly connected to the middle of the water pump 111; a water inlet pipe 112 is fixedly connected to the middle of the water pump 111; during operation, when the billet undergoes secondary cooling, the billet with liquid core is conveyed to the middle of the fixed frame 10 to implement water spray cooling on the continuously cast billet, and the water entering the water inlet pipe 112 is pumped through the water outlet pipe by the water pump 111. Water 19 is discharged into the fixed pipe 17. High pressure is applied to the water from multiple spray heads 18 and sprayed onto the casting to cool it. The driver 14 is activated according to the actual condition of the casting, driving the pulley 15 to rotate. The pulley 15 rolls in the middle of the slide rail 12. Simultaneously, the slider 13 slides in the middle of the sliding groove 11, controlling the direction of movement of the pulley 15. When the pulley 15 rolls, the fixed pipe 17 remains stationary in the middle of the rotating seat 16. The water outlet pipe 19 is flexibly designed and moves with the fixed pipe 17, thereby adjusting the distance between the multiple sets of spray heads 18. The above structure allows for rapid adjustment of the distance between the spray heads 18, adapting to the gradual increase in the thickness of the billet shell and the changes in the thermal resistance of the solidified shell. This ensures uniform cooling of all parts of the billet surface, reduces overlapping or missing areas of water flow on the billet surface, effectively reduces local overheating or undercooling of the billet, reduces the temperature gradient inside the billet, and reduces thermal stress caused by temperature differences, thus preventing deformation and cracks on the billet surface. Furthermore, each fixed pipe 17 is equipped with a separate water pump 111, allowing for individual control of water volume and pressure.
[0024] like Figure 1 and Figure 4As shown, two fixing rings 2 are fixedly connected to the middle of the fixing frame 10; the two fixing rings 2 are arranged opposite each other; a fastening bolt 21 is installed in the middle of the fixing ring 2; a fixing rod 22 is fixedly connected to the middle of the two fixing rings 2; a temperature monitor 23 is installed at the bottom of the fixing rod 22; the temperature monitor 23 is installed at one end of the fixing frame 10; during operation, according to the actual thickness of the billet, the fastening bolt 21 is unscrewed from the middle of the fixing ring 2, the two fixing rings 2 are moved up and down in the middle of the fixing frame 10, and after the temperature monitor 23 is moved to the specified height, the fastening bolt 21 is rotated in the opposite direction to fix the fixing ring 2 to the fixing frame. On the 10th, during the billet conveying process, the temperature of the billet is monitored in real time by the temperature monitor 23. The cooling temperature and flow rate of the water are adjusted according to the billet temperature. The above structure can monitor the surface temperature of the billet in real time, effectively providing accurate temperature data, which facilitates timely adjustment of the cooling flow rate to obtain the best cooling effect. Furthermore, the temperature monitor 23 can flexibly adapt to different height positions of the billet, thereby more accurately obtaining temperature data of various parts of the billet. Through precise adjustment and calibration of the temperature monitor 23, temperature deviations caused by improper position or measurement errors can be reduced.
[0025] like Figure 3 As shown, a filter box 3 is fixedly connected to the end of the water inlet pipe 112; a first filter plate 31 is fixedly connected to the middle of the filter box 3; a connecting pipe 32 is fixedly connected to the side wall of the first filter plate 31; during operation, when cooling the billet, the water source pipe is first connected to the end of the connecting pipe 32, and the water flow is first introduced into the filter box 3 by the water pump 111. When the water flows into the filter box 3, the first filter plate 31 filters the impurities and particles in the water. The filtered water enters through the water inlet pipe 112. The filter box 3 with the above structure can effectively filter out impurities and particles in the cooling water, reducing the wear and blockage caused by these impurities entering the water pump 111 or the spray head 18, reducing the corrosion and wear of the equipment by impurities, and keeping the water outlet pipe 19 and the spray head 18 unobstructed, reducing the problem of reduced flow and reduced cooling efficiency caused by impurities clogging.
[0026] like Figure 3 As shown, a rotating rod 41 is rotatably connected to the middle of the water outlet pipe 19; a baffle 4 is fixedly connected to the end of the rotating rod 41; the baffle 4 is fixedly connected inside the water outlet pipe 19; the baffle 4 is fixedly connected to the end near the water pump 111; a sealing ring 42 is fixedly connected to the side wall of the baffle 4; the sealing ring 42 is tightly fitted to the inner side wall of the water outlet pipe 19; during operation, when the water flow and pressure in the water outlet pipe 19 are controlled, the rotating rod 41 is rotated, causing the baffle 4 to rotate with the rotating rod 41. The water flow and water pressure inside the water outlet pipe 19 are controlled by the baffle 4. Through the above structure, the cooling water flow can be precisely adjusted, so as to flexibly adjust according to the actual cooling needs of the billet. Precise flow adjustment can avoid excessive consumption of cooling water, thereby reducing energy consumption and cost.
[0027] like Figure 1 and Figure 4 As shown, a collection box 5 is fixedly connected to the bottom of the conveyor frame 1; the two ends of the collection box 5 are set with slopes; a drain pipe 51 is fixedly connected to the side wall of the collection box 5; during operation, cooling water is sprayed onto the surface of the billet and drips to the bottom of the conveyor frame 1. When the water flows into contact with the surface of the billet, the heat is absorbed by the cooling water and the water temperature will rise rapidly. The cooled water is collected through the collection box 5 and discharged through the drain pipe 51 when in use. The cooling water heated by the billet through the above structure contains a large amount of heat energy. By collecting the heat energy in the cooled water, the water containing heat can be used for other processes or heating systems, thereby realizing the reuse of energy and improving the overall energy utilization efficiency. Furthermore, by collecting and analyzing the changes in the cooling water temperature, the cooling rate of the billet can be precisely controlled.
[0028] like Figure 4 As shown, a second filter plate 6 is installed in the middle of the collection box 5; the second filter plate 6 is fixed to the middle of the collection box 5; during operation, when the collection box 5 collects the water cooling the casting billet, the water flow first enters the collection box 5 through the second filter plate 6, and the collected water is filtered by the second filter plate 6. The above structure can effectively filter impurities and particulate matter in the cooling water inside the collection box 5, making the water quality in the middle of the collection box 5 purer. Filtration can reduce wastewater discharge and allow the collected water to be reused, effectively increasing the utilization rate of water resources.
[0029] like Figure 4 As shown, a protective cover 7 is fixed to the bottom of the fixing rod 22; the protective cover 7 is set outside the temperature monitor 23; during operation, when water is sprayed onto the casting billet through multiple spray nozzles 18, the temperature monitor 23 is protected by the protective cover 7, preventing the water flow from directly contacting the temperature monitor 23. The above structure can effectively reduce the damage caused by the sprayed water directly contacting the temperature monitor 23, reduce the direct impact of the water flow on the temperature monitor 23 causing temperature fluctuations or errors, thereby improving the accuracy of temperature monitoring.
[0030] During operation, when the billet undergoes secondary cooling, the billet with a liquid core is conveyed to the center of the fixed frame 10 for water spray cooling. Water entering the inlet pipe 112 is pumped by the water pump 111 and discharged through the outlet pipe 19 into the fixed pipe 17. The water is then sprayed onto the billet from multiple spray nozzles 18 under high pressure to cool it. The driver 14 is activated according to the actual condition of the billet, driving the pulley 15 to rotate. The pulley 15 rolls in the middle of the slide rail 12, causing the slider 13 to slide in the middle of the sliding groove 11, thus controlling the movement of the pulley 15. In this direction, when the pulley 15 rolls, the fixed pipe 17 remains stationary in the middle of the rotating seat 16. The water outlet pipe 19 is flexibly designed; as the fixed pipe 17 moves, the distance between the multiple sets of spray heads 18 is adjusted. Based on the actual thickness of the billet, the fastening bolt 21 is unscrewed from the middle of the fixing ring 2, and the two fixing rings 2 are moved up and down in the middle of the fixing frame 10. After the temperature monitor 23 is moved to the designated height, the fastening bolt 21 is rotated in the opposite direction to fix the fixing ring 2 onto the fixing frame 10. During the billet conveying process, the temperature of the billet is monitored in real time by the temperature monitor 23. The cooling temperature and flow rate of the water are adjusted according to the temperature of the billet. When cooling the billet, the water source pipe is first connected to the end of the connecting pipe 32. The water pump 111 first brings the water into the filter box 3. When the water enters the filter box 3, it passes through the first filter plate 31 to filter impurities and particles in the water. The filtered water enters through the inlet pipe 112. When the water flow rate and pressure in the outlet pipe 19 are controlled, the rotating rod 41 is rotated, causing the baffle 4 to rotate with the rotating rod 41. The baffle 4 controls the water flow rate and pressure inside the outlet pipe 19. The cooling water is sprayed onto the surface of the billet and drips to the bottom of the conveyor frame 1. When the water comes into contact with the surface of the billet, the heat is absorbed by the cooling water and the water temperature rises rapidly. The cooled water is collected by the collection box 5 and discharged through the drain pipe 51 when in use. When the collection box 5 collects the water that cooled the billet, the water first enters the collection box 5 through the second filter plate 6 and is filtered by the second filter plate 6. When the water is sprayed onto the billet by multiple spray nozzles 18, the temperature monitor 23 is protected by the protective cover 7 to prevent the water from directly contacting the temperature monitor 23.
[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A rapid cooling structure for flow-casting a billet, comprising a conveying frame (1); characterized in that: The top of the conveying frame (1) is fixedly connected with a fixing frame (10); the side wall of the fixing frame (10) is provided with two sliding grooves (11); the two sliding grooves (11) are oppositely arranged; the top of the fixing frame (10) is provided with a sliding rail (12); a plurality of sliding blocks (13) are slidably connected in the middle of the sliding groove (11); the end of the sliding block (13) is fixedly connected with a driver (14); a plurality of pulleys (15) are rollingly connected in the middle of the sliding rail (12); the side wall of the pulley (15) is fixedly connected in the middle of the driver (14); the side, away from the driver (14), of the pulley (15) is fixedly connected with a rotating seat (16); the middle of the two corresponding rotating seats (16) is fixedly connected with a fixed pipe (17); the middle of the fixed pipe (17) is fixedly connected with a plurality of spray heads (18); the plurality of spray heads (18) are equidistantly distributed; one end of the middle of the fixed pipe (17) is fixedly connected with a water outlet pipe (19); the side wall of the conveying frame (1) is fixedly connected with a plurality of water pumps (111); the end of the water outlet pipe (19) is fixedly connected in the middle of the water pump (111); the middle of the water pump (111) is fixedly connected with a water inlet pipe (112).
2. A rapid cooling structure for continuously cast billets according to claim 1, characterized in that: The middle of the fixing frame (10) is fixedly connected with two fixed rings (2); the two fixed rings (2) are oppositely arranged; the middle of the fixed ring (2) is mounted with a fastening bolt (21); the middle of the two fixed rings (2) is fixedly connected with a fixed rod (22); the bottom of the fixed rod (22) is mounted with a temperature monitor (23); the temperature monitor (23) is mounted at one end of the fixing frame (10).
3. A rapid cooling structure for continuously cast billets according to claim 1, characterized in that: The end of the water inlet pipe (112) is fixedly connected with a filter box (3); the middle of the filter box (3) is fixedly connected with a first filter plate (31); the side wall of the first filter plate (31) is fixedly connected with a connecting pipe (32).
4. A rapid cooling structure for continuously cast billets according to claim 1, characterized in that: The middle of the water outlet pipe (19) is rotatably connected with a rotating rod (41); the end of the rotating rod (41) is fixedly connected with a baffle (4); the baffle (4) is fixedly connected inside the water outlet pipe (19); the baffle (4) is fixedly connected at the end close to the water pump (111); the side wall of the baffle (4) is fixedly connected with a sealing ring (42); the sealing ring (42) is tightly attached to the inner side wall of the water outlet pipe (19).
5. A rapid cooling structure for continuously cast billets according to claim 1, characterized in that: The bottom of the conveying frame (1) is fixedly connected with a collection box (5); the two ends of the collection box (5) are provided with inclined surfaces; the side wall of the collection box (5) is fixedly connected with a drain pipe (51).
6. A rapid cooling structure for continuously cast billets according to claim 5, characterized in that: The middle of the collection box (5) is mounted with a second filter plate (6); the second filter plate (6) is fixedly connected in the middle of the collection box (5).
7. A rapid cooling structure for continuously cast billets according to claim 2, characterized in that: The bottom of the fixed rod (22) is fixedly connected with a protective cover (7); the protective cover (7) is arranged outside the temperature monitor (23).