Laminar cooling device with uniform cooling effect
Patent Information
- Application Number
- CN202522553205.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-01
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-12-01
AI Technical Summary
然而，传统方法的改进空间有限，亟需创新技术突破现有局限
本实用新型中，一方面，上集管在冷却机架上等距分布、上集管喷嘴在集管外侧等距设置，确保冷却介质沿钢带宽度方向分布均衡；另一方面，单组集管两侧喷嘴交叉错位（错位距离为喷嘴半径），可完全覆盖钢带表面，消除“喷射死角”，避免钢带因局部冷却不均出现变形、性能差异等问题，托举架通过安装架与冷却机架固定连接，整体结构支撑稳固，可应对钢带输送及冷却喷射过程中的振动；安装板采用不锈钢材质，耐冷却介质腐蚀，且弧形槽式底部结构能减少介质冲击对部件的损耗，延长设备整体使用寿命，上集管与喷嘴方向垂直于钢带前进方向，冷却介质可直接作用于移动的钢带表面，配合层流喷射的集中性，能快速带走钢带热量；同时，等距与错位的喷射设计可避免介质浪费，在保证冷却效果的同时实现能耗优化。
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Figure CN224895251U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of laminar flow cooling equipment, specifically to a laminar flow cooling equipment with uniform cooling effect. Background Technology
[0002] Laminar flow cooling is a key process for microstructure transformation and performance improvement. Uneven cooling seriously affects the uniformity of microstructure, which in turn affects the uniformity of performance, deteriorating the uniformity of the steel strip's strength, toughness, plasticity, and other properties. It can easily cause localized performance degradation that is difficult to detect, posing significant quality risks in subsequent applications. Hot continuous rolling production lines are generally composed of multiple sets of laminar flow cooling frames, arranged neatly side by side. Each set of laminar flow cooling frames has 4 to 8 upper manifolds and multiple lower nozzles. Each upper manifold has two rows of upper nozzles, and the two rows of upper nozzles are distributed in a cross pattern, with the distance between the crossover points being the outer diameter of the upper nozzle pipe.
[0003] Although this design uses cross-distributed water nozzles to prevent uneven cooling, in actual operation, due to the effect of water spraying, these cross-distributed water nozzles cannot cover the surface of the steel strip, and gaps still exist. Furthermore, the cooling of multiple upper and lower manifolds in the same position and multiple laminar flow cooling racks in the same position overlaps, resulting in black and red stripes on the transverse side of the steel strip. Temperature measurements of these black and red areas can show a temperature difference of 40°C to 120°C, and this temperature difference is enough to affect the microstructure of high-quality products and seriously affect the uniformity of the steel strip's performance.
[0004] Technicians are constantly exploring optimization solutions, striving to improve cooling uniformity by refining equipment structure and control strategies to meet the demands of high-quality product manufacturing. However, the room for improvement in traditional methods is limited, and innovative technologies are urgently needed to overcome existing limitations. Utility Model Content
[0005] Technical problems to be solved In view of the above-mentioned shortcomings of the existing technology, the present invention provides a laminar flow cooling device with uniform cooling effect, which can effectively solve the problems in the existing technology.
[0006] Technical solution This utility model provides a laminar flow cooling device with uniform cooling effect, including a support frame. The inner side of the support frame is fixedly connected to the cooling frame through a mounting bracket. The outer side of the cooling frame is connected to an upper manifold. An mounting plate is fixed to the top of the upper manifold. The two sides of the mounting plate are fixedly connected to two sets of connecting plates. Circular holes are opened in the middle of the connecting plate, the top of the upper manifold, and the middle of the mounting plate. An upper manifold nozzle is installed in the circular hole. One end of the upper manifold nozzle is connected to the upper manifold, and the other end is inserted and fixed in the circular hole of the connecting plate. A steel strip is horizontally arranged at the bottom end of the upper manifold nozzle.
[0007] Furthermore, multiple sets of upper manifolds are equidistantly arranged on the cooling frame, and multiple sets of upper manifold nozzles are equidistantly arranged on the outer side of the upper manifolds.
[0008] Furthermore, within a set of upper manifolds, the upper manifold nozzles are installed in a staggered manner on both sides of the upper manifold, and the staggered distance is the radius of the upper manifold nozzle.
[0009] Furthermore, the direction of the cooling frame is the same as the forward direction of the steel strip, and the direction of the upper manifold and the upper manifold nozzle is perpendicular to the forward direction of the steel strip.
[0010] Furthermore, the mounting plate is made of stainless steel and has a downward-opening arc-shaped groove structure at the bottom.
[0011] Beneficial effects In this invention, on the one hand, the upper manifolds are equidistantly distributed on the cooling frame, and the nozzles of the upper manifolds are equidistantly set on the outside of the manifolds, ensuring a balanced distribution of the cooling medium along the width of the steel strip. On the other hand, the nozzles on both sides of a single manifold are staggered (the stagger distance is the nozzle radius), which can completely cover the surface of the steel strip, eliminating "spray dead angles" and avoiding problems such as deformation and performance differences in the steel strip due to uneven local cooling. The support frame is fixedly connected to the cooling frame through the mounting frame, and the overall structure is stable and can cope with the vibration during the steel strip conveying and cooling spraying process. The mounting plate is made of stainless steel, which is resistant to the corrosion of the cooling medium, and the arc-shaped groove bottom structure can reduce the wear of the components caused by the impact of the medium and extend the overall service life of the equipment. The direction of the upper manifolds and nozzles is perpendicular to the forward direction of the steel strip, so the cooling medium can directly act on the surface of the moving steel strip. Combined with the concentration of laminar flow spray, it can quickly remove the heat from the steel strip. At the same time, the equidistant and staggered spray design can avoid medium waste and optimize energy consumption while ensuring the cooling effect.
[0012] This device solves the problem of uneven lateral cooling. The black and red stripes distributed longitudinally along the steel strip are caused by the lateral temperature difference of the steel strip. It solves the problem of large temperature differences resulting from the superposition of lateral temperature differences, which is impossible in existing technologies. It also overcomes the current situation where uneven lateral cooling becomes more prominent as equipment ages and water quality and spray function decline. It makes full use of existing equipment and saves costs. The nozzles of the upper manifold are installed in a crisscrossing manner along the lateral side of the steel strip. The crisscrossing distance is the radius of the upper manifold spray pipe, which increases the degree of cross-flow of water in the lateral side and simultaneously reduces the superposition of temperature drops at the same position, resulting in uniform lateral cooling of the steel strip. It produces high-quality products such as high-strength steel, high-toughness steel, high-expansion steel, high-fatigue-performance steel, and high-formability steel with uniform microstructure and improved performance uniformity. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a top view of the structure of this utility model; Figure 2 This is a structural schematic diagram of the lifting frame-cooling frame-upper manifold-upper manifold nozzle of this utility model; Figure 3 This is a structural exploded view of the upper manifold and the upper manifold nozzle in this utility model; Figure 4 These are before-and-after comparison images of the improvements made to this utility model.
[0015] The labels in the diagram represent: 1. Lifting frame; 2. Cooling frame; 3. Upper manifold; 31. Connecting plate; 32. Mounting plate; 4. Upper manifold nozzle; 5. Steel strip. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0017] The present invention will be further described below with reference to the embodiments.
[0018] Example: A laminar flow cooling device with uniform cooling effect, as shown in the attached figure. Figure 1 -Appendix Figure 4 The device includes a support frame 1, the inner side of which is fixedly connected to the cooling frame 2 via a mounting bracket, the outer side of which is connected to the upper manifold 3, the top of which is fixedly mounted with a mounting plate 32, the two sides of which are fixedly connected to two sets of connecting plates 31, the middle of the connecting plate 31, the top of the upper manifold 3 and the middle of the mounting plate 32 are all provided with round holes, the round holes are provided with upper manifold nozzles 4, one end of the upper manifold nozzles 4 is connected to the upper manifold 3 and the other end is inserted and fixed in the round hole of the connecting plate 31, and the bottom end of the upper manifold nozzles 4 is provided with a steel strip 5 horizontally. Multiple sets of upper manifolds 3 are equidistantly arranged on the cooling frame 2, and multiple sets of upper manifold nozzles 4 are equidistantly arranged on the outer side of the upper manifolds 3; within one set of upper manifolds 3, the upper manifold nozzles 4 are installed in a staggered manner on both sides of the upper manifolds 3, and the staggered distance is the radius of the upper manifold nozzles 4.
[0019] On the one hand, the upper manifolds 3 are evenly distributed on the cooling frame 2, and the upper manifold nozzles 4 are evenly set on the outside of the manifolds, ensuring that the cooling medium is evenly distributed along the width of the steel strip 5. On the other hand, the nozzles on both sides of a single manifold are staggered (the stagger distance is the nozzle radius), which can completely cover the surface of the steel strip 5, eliminate "spray dead angles", and avoid problems such as deformation and performance differences in the steel strip 5 due to uneven local cooling. The support frame 1 is fixedly connected to the cooling frame 2 through the mounting frame, and the overall structure is stable and can cope with the vibration during the conveying and cooling spraying of the steel strip 5. The mounting plate 32 is made of stainless steel, which is resistant to the corrosion of the cooling medium, and the arc-shaped groove bottom structure can reduce the wear of the components by the impact of the medium and extend the overall service life of the equipment. The upper manifolds 3 and the nozzles are perpendicular to the forward direction of the steel strip 5, so the cooling medium can directly act on the surface of the moving steel strip 5. Combined with the concentration of laminar flow spray, it can quickly remove the heat from the steel strip. At the same time, the equidistant and staggered spray design can avoid medium waste and optimize energy consumption while ensuring the cooling effect.
[0020] This device solves the problem of uneven lateral cooling. Figure 4 As shown in the diagram, A represents the area before improvement, and B represents the area after improvement. The red area represents the steel strip, and the blue area represents the marks left by water flowing vertically onto the steel strip. The black and red stripes distributed longitudinally along the steel strip 5 are caused by the transverse temperature difference. This design solves the problem of large temperature differences resulting from the superposition of transverse temperature differences, which is unavoidable in existing technologies. It also overcomes the current situation where uneven transverse cooling becomes more pronounced as equipment ages, water quality and spray function decline. It fully utilizes existing equipment and saves costs. By installing the upper manifold nozzle 4 in a staggered, crisscrossing manner along the transverse of the steel strip 5, with the staggering distance being the radius of the upper manifold nozzle 4, the transverse water flow becomes further intersected, simultaneously reducing the superposition of temperature drops at the same location, resulting in uniform transverse cooling of the steel strip 5. This produces high-quality products such as high-strength steel, high-toughness steel, high-expansion steel, high-fatigue-performance steel, and high-formability steel with a uniform microstructure and improved performance uniformity.
[0021] The direction of the cooling frame 2 is the same as the forward direction of the steel belt 5, and the direction of the upper manifold 3 and the upper manifold nozzle 4 is perpendicular to the forward direction of the steel belt 5; the mounting plate 32 is made of stainless steel and has an arc-shaped groove structure with the bottom opening downward.
[0022] The cooling medium can precisely cover the surface of the steel strip in a laminar flow pattern, avoiding the "coverage blind spots" or "excessive local overlap" problems of traditional nozzle spraying. Meanwhile, the stainless steel mounting plate serves both as a fixation (connecting the connecting plate to the upper manifold) and a flow guide. Its downward-opening arc-shaped groove structure reduces airflow interference during cooling medium spraying, further ensuring the stability of the laminar flow pattern. Furthermore, the corrosion resistance of stainless steel extends the service life of the equipment in humid cooling environments. The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.
Claims
1. A laminar flow cooling device with uniform cooling effect, characterized in that, The device includes a support frame (1), the inner side of which is fixedly connected to the cooling frame (2) via a mounting bracket. The outer side of the cooling frame (2) is connected to the upper manifold (3). The top end of the upper manifold (3) is fixed with a mounting plate (32). The two sides of the mounting plate (32) are fixedly connected to two sets of connecting plates (31). The middle part of the connecting plate (31), the top end of the upper manifold (3), and the middle part of the mounting plate (32) are all provided with round holes. An upper manifold nozzle (4) is provided in the round hole. One end of the upper manifold nozzle (4) is connected to the upper manifold (3), and the other end is inserted and fixed in the round hole of the connecting plate (31). A steel strip (5) is provided laterally at the bottom end of the upper manifold nozzle (4).
2. The laminar flow cooling device with uniform cooling effect according to claim 1, characterized in that, The upper manifold (3) is provided in multiple sets at equal intervals on the cooling frame (2), and the upper manifold nozzles (4) are provided in multiple sets at equal intervals on the outer side of the upper manifold (3).
3. The laminar flow cooling device with uniform cooling effect according to claim 1, characterized in that, In a set of upper manifolds (3), the upper manifold nozzles (4) are installed crosswise and staggered on both sides of the upper manifolds (3), and the crosswise and staggered distance is the radius of the upper manifold nozzles (4).
4. The laminar flow cooling device with uniform cooling effect according to claim 1, characterized in that, The direction of the cooling frame (2) is the same as the forward direction of the steel strip (5), and the directions of the upper manifold (3) and the upper manifold nozzle (4) are perpendicular to the forward direction of the steel strip (5).
5. A laminar flow cooling device with uniform cooling effect according to claim 4, characterized in that, The mounting plate (32) is made of stainless steel and has a downward-opening arc-shaped groove structure at the bottom.