Section steel cooling device and section steel cooling method

Abstract

The invention discloses a profile steel cooling device and a profile steel cooling method. The profile steel cooling device comprises a water cooling structure, an air cooling structure, a segmentation saw, a cooling bed input structure, at least two overturning structures and a cooling bed output structure. The conveying direction of the water mist cooling structure is perpendicular to the conveying direction of the air cooling structure. The overturning structures are arranged at intervals along the second conveying assembly and used for overturning the profile steel in the air cooling structure by a certain angle. According to the profile steel cooling device, a water mist cooling structure and an air cooling structure are combined, and a continuous and efficient cooling process is formed. The water mist cooling structure primarily and quickly cools the profile steel through the spray head assembly, and the air cooling structure further uniformly reduces the temperature of the profile steel, so that the ideal cooling effect is ensured. The arrangement of the overturning structure solves the problem that water is easy to accumulate when complex section steel (such as H-shaped steel) is horizontally cooled.

Description

Technical Field

[0001] This application belongs to the field of section steel cooling technology, specifically relating to a section steel cooling device and a section steel cooling method. Background Technology

[0002] In existing technologies, after hot-rolled steel sections are rolled, they are typically cut into sections approximately 85m long using a segment saw, and then cooled with water mist on a walking beam cooling bed. However, when steel sections with complex cross-sectional shapes, such as H-beams, are placed horizontally for cooling, water tends to accumulate on the upper surface of the grooves, leading to uneven cooling and resulting in defects such as deformation, web wavy lines, and stress cracks, thus affecting the surface quality of the steel section. Summary of the Invention

[0003] To address the aforementioned technical problems, this application discloses a steel section cooling device and a steel section cooling method, aiming to achieve efficient and uniform cooling of hot-rolled steel sections and improve product quality.

[0004] The technical solution adopted to achieve the purpose of this application is as follows: In the first aspect of this application, the present invention discloses a steel section cooling device, comprising:

[0005] A water mist cooling structure includes a first conveying assembly and a nozzle assembly, the nozzle assembly being used to spray coolant toward the profile steel on the first conveying assembly;

[0006] An air-cooled structure includes a second conveying component, wherein the conveying direction of the second conveying component is perpendicular to the conveying direction of the first conveying component;

[0007] A segmented saw is installed at the output end of the first conveying component;

[0008] A cooling bed input structure is installed at the output end of the segmented saw. The conveying direction of the cooling bed input structure is parallel to the conveying direction of the first conveying component, and the output end of the cooling bed input structure is set towards the input end of the second conveying component.

[0009] At least two flip structures, each of which is spaced apart along the second conveying component; and

[0010] A cooling bed output structure is installed at the output end of the second transmission component, and the transmission direction of the cooling bed output structure is parallel to the transmission direction of the first transmission component.

[0011] In some embodiments, the nozzle assembly includes an upper nozzle, a lower nozzle, a left nozzle, and a right nozzle, with the left nozzle and the right nozzle located on the left and right sides of the first conveying assembly, respectively, and the upper nozzle and the lower nozzle located on the upper and lower sides of the first conveying assembly, respectively.

[0012] In some embodiments, the water mist cooling structure further includes a first frame, the first conveying assembly is mounted on the first frame, the left nozzle and the right nozzle are slidably engaged with the first frame along the width direction of the first conveying assembly, the upper nozzle is mounted on the top of the first frame, and the lower nozzle is mounted on the bottom of the first frame.

[0013] In some embodiments, the first conveying assembly includes multiple conveying rollers, a cooling gap formed between two adjacent conveying rollers, and a nozzle assembly disposed at at least two of the cooling gaps. The nozzle assembly is provided with at least three upper nozzles, at least three lower nozzles, at least three left nozzles, and at least three right nozzles at the cooling gaps. The three upper nozzles are spaced apart along the conveying direction of the first conveying assembly, with the middle upper nozzle facing the cooling gap and the two side upper nozzles inclined towards the cooling gap. The three lower nozzles are spaced apart along the conveying direction of the first conveying assembly, with the middle lower nozzle facing the cooling gap and the two side lower nozzles inclined towards the cooling gap. The three left nozzles and three right nozzles are spaced apart along the conveying direction of the first conveying assembly.

[0014] In some embodiments, the water mist cooling structure further includes a blower assembly located at the output end of the first conveying assembly and disposed toward the input end of the first conveying assembly.

[0015] The technical solution adopted to achieve the purpose of this application is as follows: In the second aspect of this application, the present invention also discloses a method for cooling profiles based on the profile cooling device described in the first aspect, characterized by comprising the following steps:

[0016] Hot-rolled steel sections are fed into a water mist cooling structure for water cooling.

[0017] The water-cooled steel sections are then sent into an air-cooling structure for air cooling.

[0018] The steel profile enters the air-cooling structure from a horizontal position, and is then immediately flipped to a vertical position. When the steel profile approaches the output structure of the cooling bed, it is flipped back to a horizontal position.

[0019] In some implementations, after the steel section leaves the water mist cooling structure, the steel section is segmented and multiple steel sections are arranged sequentially and spaced apart on the cooling bed input structure.

[0020] Multiple sections of steel are simultaneously fed into the air-cooled structure.

[0021] In some implementations, the steel section is flipped at an angle of 90 degrees each time.

[0022] In some implementations, the steel section is flipped in the same direction each time.

[0023] In some implementations, the positions of the left and right nozzles are adjusted before the steel profile enters the water mist cooling structure;

[0024] Before the steel profile leaves the cooling structure, use a blower to blow away any water stains on it.

[0025] As can be seen from the above technical solution, the steel section cooling device disclosed in this application includes a water cooling structure, an air cooling structure, a segmented saw, a cooling bed input structure, at least two tilting structures, and a cooling bed output structure. The water mist cooling structure includes a first conveying assembly and a nozzle assembly, the nozzle assembly being used to spray coolant towards the steel section on the first conveying assembly. The air cooling structure includes a second conveying assembly, the conveying direction of which is perpendicular to the conveying direction of the first conveying assembly. The segmented saw is installed at the output end of the first conveying assembly. The cooling bed input structure is installed at the output end of the segmented saw, the conveying direction of which is parallel to the conveying direction of the first conveying assembly, and the output end of the cooling bed input structure is positioned facing the input end of the second conveying assembly. Each of the tilting structures is spaced apart along the second conveying assembly. The cooling bed output structure is installed at the output end of the second conveying assembly, and the conveying direction of the cooling bed output structure is parallel to the conveying direction of the first conveying assembly.

[0026] The steel section cooling device disclosed in this application combines a water mist cooling structure and an air cooling structure to form a continuous and efficient cooling process. The water mist cooling structure provides initial and rapid cooling to the steel section through a nozzle assembly, while the air cooling structure further and evenly reduces the temperature of the steel section, ensuring an ideal cooling effect. The flipping structure solves the problem of water accumulation in complex cross-section steel sections (such as H-beams) during horizontal cooling. By flipping, the steel section changes from horizontal to vertical, avoiding water accumulation on the upper surface of the groove, thereby achieving a more uniform cooling effect. Attached Figure Description

[0027] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] Figure 1 This is a schematic diagram of a steel cooling device in one or more embodiments of this application;

[0029] Figure 2 for Figure 1 A cross-sectional view at point AA;

[0030] Figure 3 for Figure 1 Cross-sectional view at BB;

[0031] Figure 4 This is a schematic flowchart of a steel section cooling method in one or more embodiments of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100. Water mist cooling structure; 110. First conveyor assembly; 120. Nozzle assembly; 121. Upper nozzle; 122. Lower nozzle; 123. Left nozzle; 124. Right nozzle; 200. Air cooling structure; 210. Second conveyor assembly; 300. Segment saw; 400. Cooling bed input structure; 500. Cooling bed output structure; 600. Universal rolling mill; 700. Rear extension roller conveyor assembly; 800. Section steel; 900. Tilting structure. Detailed Implementation

[0034] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0035] Furthermore, reference numerals and / or reference letters may be repeated in different examples in this application. Such repetition is for simplification and clarity purposes and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0037] This invention discloses a section steel cooling device that can solve the technical problem of water accumulation on the upper surface of section steel 800, thereby performing efficient and uniform cooling treatment on hot-rolled section steel 800 to improve the product quality of section steel 800.

[0038] The technical solution of this application will be described in detail below through specific embodiments:

[0039] See Figure 1 , Figure 2 and Figure 3 In a first aspect embodiment of this application, a steel section cooling device is disclosed, comprising a water cooling structure 100, an air cooling structure 200, a segmented saw 300, a cooling bed input structure 400, at least two tilting structures 900, and a cooling bed output structure 500. The water mist cooling structure 100 includes a first conveying assembly 110 and a nozzle assembly 120, the nozzle assembly 120 being used to spray coolant toward the steel section 800 on the first conveying assembly 110. The air cooling structure 200 includes a second conveying assembly 210, the conveying direction of the second conveying assembly 210 being perpendicular to the conveying direction of the first conveying assembly 110. The segmented saw 300 is mounted at the output end of the first conveying assembly 110. The cooling bed input structure 400 is mounted at the output end of the segmented saw 300, the conveying direction of the cooling bed input structure 400 being parallel to the conveying direction of the first conveying assembly 110, and the output end of the cooling bed input structure 400 facing the input end of the second conveying assembly 210. The tilting structures 900 are spaced apart along the second conveying assembly 210. The cooling bed output structure 500 is installed at the output end of the second transmission component 210, and the transmission direction of the cooling bed output structure 500 is parallel to the transmission direction of the first transmission component 110.

[0040] The steel section cooling device disclosed in this embodiment combines a water mist cooling structure 100 and an air cooling structure 200 to form a continuous and efficient cooling process. The water mist cooling structure 100 provides initial rapid cooling to the steel section 800 through the nozzle assembly 120, while the air cooling structure 200 further and evenly reduces the temperature of the steel section 800, ensuring an ideal cooling effect. The flipping structure 900 solves the problem of water accumulation in complex cross-section steel sections 800 (such as H-beams 800) during horizontal cooling. By flipping, the steel section 800 changes from horizontal to vertical, avoiding water accumulation on the upper surface of the groove, thereby achieving a more uniform cooling effect.

[0041] In one embodiment, the nozzle assembly 120 includes an upper nozzle 121, a lower nozzle 122, a left nozzle 123, and a right nozzle 124. The left nozzle 123 and the right nozzle 124 are located on the left and right sides of the first conveying assembly 110, respectively, and the upper nozzle 121 and the lower nozzle 122 are located on the upper and lower sides of the first conveying assembly 110, respectively.

[0042] The arrangement of the upper nozzle 121 and the lower nozzle 122 ensures that the coolant can be sprayed onto the surface of the steel section 800 simultaneously from both the top and bottom, achieving full coverage of the top and bottom surfaces of the steel section 800. This dual-sided cooling method helps to accelerate the cooling rate and reduce the temperature unevenness caused by unilateral cooling.

[0043] The addition of the left nozzle 123 and the right nozzle 124 further enhances the uniformity of cooling. They are located on the left and right sides of the first conveying assembly 110, respectively, and can spray coolant onto the sides of the steel profile 800, thereby filling the blank areas of side cooling.

[0044] In one embodiment, the water mist cooling structure 100 further includes a first frame, on which a first conveying assembly 110 is mounted. A left nozzle 123 and a right nozzle 124 slide in engagement with the first frame along the width direction of the first conveying assembly 110. An upper nozzle 121 is mounted on the top of the first frame, and a lower nozzle 122 is mounted on the bottom of the first frame.

[0045] The first frame, as the supporting frame of the entire water mist cooling structure 100, has sufficient strength and rigidity to ensure that the first conveying assembly 110 and the steel profile 800 on it maintain stable operation during the cooling process.

[0046] The design of the left nozzle 123 and the right nozzle 124 slidingly engaging with the first frame along the width direction of the first conveying assembly 110 ensures that the nozzles can be flexibly adjusted to adapt to steel profiles 800 of different widths, and also ensures the stability of the nozzles when spraying coolant, avoiding uneven cooling caused by shaking.

[0047] The nozzle and the lower nozzle 122 are fixedly installed at the top and bottom of the first frame, respectively. Their positions are fixed, but they can be adjusted by adjusting the spray angle and spray volume to adapt to different cooling requirements, further enhancing the adaptability of the device.

[0048] In one embodiment, the first frame is equipped with a translation trolley, guide rails, hydraulic cylinders, valve platforms, and related supports. Each set of lateral movement mechanisms is equipped with a drive unit, which uses a hydraulic cylinder to drive the trolley to translate along the guide rails perpendicular to the rolling line direction, and can selectively stop at the desired position. The left nozzle 123, right nozzle 124, and part of the water and air supply pipelines that need to be moved are mounted on the translation trolley and move with the trolley.

[0049] In one embodiment, the first conveying assembly 110 includes multiple conveying rollers, a cooling gap formed between two adjacent conveying rollers, and a nozzle assembly 120 disposed at at least two of the cooling gaps. The nozzle assembly 120 is provided with at least three upper nozzles 121, at least three lower nozzles 122, at least three left nozzles 123, and at least three right nozzles 124 at the cooling gaps.

[0050] The arrangement of multiple nozzle assemblies 120 ensures that the coolant can fully cover the surface of the steel profile 800, including the top, bottom, and sides. This comprehensive cooling method helps to accelerate the cooling rate and reduce temperature gradient problems caused by uneven local cooling.

[0051] Three upper nozzles 121 are spaced apart along the conveying direction of the first conveying assembly 110. The upper nozzle 121 in the middle is positioned toward the cooling gap, while the upper nozzles 121 on both sides are inclined toward the cooling gap.

[0052] Three lower nozzles 122 are spaced apart along the conveying direction of the first conveying assembly 110. The lower nozzle 122 in the middle is positioned toward the cooling gap, while the lower nozzles 122 on both sides are inclined toward the cooling gap.

[0053] Three left nozzles 123 are spaced apart along the conveying direction of the first conveying assembly 110. The left nozzle 123 in the middle is positioned toward the cooling gap, while the left nozzles 123 on both sides are inclined toward the cooling gap.

[0054] Three right nozzles 124 are spaced apart along the conveying direction of the first conveying assembly 110. The right nozzle 124 in the middle is positioned toward the cooling gap, while the right nozzles 124 on both sides are inclined toward the cooling gap.

[0055] The nozzle assembly 120 includes an upper nozzle 121, a lower nozzle 122, a left nozzle 123, and a right nozzle 124, with at least three of each type of nozzle, spaced apart along the conveying direction. This arrangement ensures that cooling water can cover the surface of the steel profile 800 in an all-round and uniform manner, reducing temperature gradient problems caused by uneven cooling and lowering the risk of deformation.

[0056] The nozzles located in the middle (whether it's the upper nozzle 121, lower nozzle 122, left nozzle 123, or right nozzle 124) spray directly towards the cooling gap, while the nozzles on both sides are angled towards the cooling gap. This design can be flexibly adjusted according to the specifications and shape of the 800 profile, ensuring that the cooling water can be accurately sprayed onto the area that needs cooling, improving the targeting and adaptability of the cooling effect.

[0057] In one embodiment, the first conveying assembly 110 includes 28 conveying rollers forming 27 cooling gaps. A nozzle assembly 120 is installed at approximately every three cooling gaps. The nozzle assemblies 120 are arranged in three circles along the conveying direction of the first conveying assembly 110 at the corresponding cooling gaps, with each circle including two upper nozzles 121, two lower nozzles 122, three left nozzles 123, and three right nozzles 124.

[0058] Three upper nozzles 121 are arranged vertically above the roll surface, and the upper nozzles 121 are angled outwards to cool the flanges and web R-corners of the steel section 800 from above. Three lower nozzles 122 are arranged vertically below the roll surface, and the lower nozzles 122 are angled outwards to cool the flanges and web R-corners of the steel section 800 from below.

[0059] In one embodiment, the nozzle assembly 120 further includes a main pipeline water and air supply control valve group, which includes structures such as an electric valve, a flow meter, and a pneumatic flow regulating valve. The main pipeline water and air supply control valve group is used to control the water supply to the cooling nozzle and regulate the cooling water flow rate to achieve controlled cooling process for the 800 profile steel.

[0060] In one embodiment, the water mist cooling structure 100 further includes a blowing assembly located at the output end of the first conveying assembly 110 and positioned toward the input end of the first conveying assembly 110.

[0061] The airflow generated by the blowing assembly can disperse the coolant buildup on the surface of the 800 profile, preventing the formation of water droplets or films, thus promoting a more even distribution of coolant on the 800 profile surface. The blowing coverage width can be designed to be 1000mm, and the compressed air pressure can be designed to be 0.4-0.6MPa, which can prevent water vapor from being carried out of the water mist area.

[0062] In one embodiment, a universal rolling mill 600 and a rear extension roller conveyor assembly 700 are arranged in front of the steel section cooling device. After being processed in the universal rolling mill 600, the steel material is fed onto the water mist cooling structure 100 via the rear extension roller conveyor assembly 700.

[0063] The Universal Rolling Mill 600 is a multi-functional steel rolling equipment capable of rolling various complex shapes of 800 profiles. Inside the Universal Rolling Mill 600, steel (i.e., uncooled steel) undergoes a series of rolling operations, which may include flattening, narrowing, and thinning, to obtain the desired cross-sectional shape and dimensions.

[0064] Section steel cooling devices play a crucial role in steel production lines. They are mainly used to quickly and effectively cool rolled section steel to ensure that the mechanical properties and microstructure of the steel meet specific requirements.

[0065] After being rolled on the universal rolling mill 600, the temperature of the steel material rises significantly. At this point, the extended roller assembly 700 quickly feeds it into the water-cooling structure, ensuring that the steel is cooled within the optimal temperature range. This continuous production reduces energy waste and downtime, thereby lowering energy consumption and production costs.

[0066] Through the above embodiments, this application has the following beneficial effects or advantages: The steel section cooling device disclosed in this application, through the combination of water mist cooling structure 100 and air cooling structure 200, and the setting of flipping structure 900, achieves efficient and uniform cooling of hot-rolled steel section 800, avoiding the uneven cooling phenomenon caused by residual water on the upper surface of the groove. The setting of segment saw 300 allows the hot-rolled steel section 800 to be precisely sawn before cooling, avoiding the problem of uneven thermal stress of long materials during the cooling process, and also facilitating subsequent processing and transportation. The multi-angle spray design of nozzle assembly 120 (such as the four sides, top, bottom, left, and right) ensures that the coolant can fully cover the surface of steel section 800, reducing cooling dead angles and improving cooling uniformity. The position of nozzle assembly 120 and the setting of flipping structure 900 can be adjusted according to different specifications of steel section 800, which has strong adaptability and flexibility. The medium used in the ultra-fast cooling technology of steel section 800 after rolling is a mixture of air and water, and the cooling form is air mist cooling, which is uniform and has small deformation.

[0067] See Figure 4 Based on the same inventive concept, a second aspect of this application discloses a method for cooling section 800 of a section steel based on any embodiment of the first aspect of the section steel cooling device, characterized by comprising the following steps:

[0068] Hot-rolled steel section 800 is fed into water mist cooling structure 100 for water cooling;

[0069] The water-cooled steel section 800 is sent into the air-cooling structure 200 for air cooling;

[0070] The steel section 800 enters the air cooling structure 200 from a horizontal position, and then is immediately flipped to a vertical position. When the steel section 800 approaches the cooling bed output structure 500, it is flipped back to a horizontal position.

[0071] The cooling method for the hot-rolled steel section 800 disclosed in this embodiment first rapidly cools the hot-rolled steel section 800 in a water mist cooling structure 100, which quickly reduces the temperature of the steel section 800 and effectively suppresses deformation and internal stress caused by high temperature. Subsequently, the water-cooled steel section 800 is transferred to an air cooling structure 200 for air cooling, further uniformly reducing the temperature of the steel section 800 and ensuring comprehensive cooling effect. In the air cooling structure 200, the steel section 800 is flipped from a horizontal to a vertical position. This change helps to evenly distribute the coolant on all surfaces of the steel section 800, avoiding uneven cooling caused by gravity in the horizontal position. Vertical cooling also allows air to more fully contact the surface of the steel section 800, improving heat exchange efficiency and further promoting cooling uniformity. The flipping operation helps to reduce deformation of the steel section 800 caused by prolonged cooling in a single posture.

[0072] In one embodiment, after the steel section 800 leaves the water mist cooling structure 100, the steel section 800 is segmented, and multiple segments of the steel section 800 are arranged sequentially and spaced apart on the cooling bed input roller assembly. The multiple segments of the steel section 800 are simultaneously fed into the air cooling structure 200.

[0073] The segmented processing ensures that each steel section 800 is of moderate length, facilitating more uniform cooling within the air-cooling structure 200. Shorter steel sections 800 are more likely to achieve temperature uniformity, reducing the problem of uneven cooling caused by excessive length. Simultaneously feeding multiple steel sections 800 for air cooling fully utilizes the space of the air-cooling structure 200, improving cooling efficiency and shortening the overall cooling time.

[0074] The spaced steel sections 800 can form a better airflow channel within the air cooling structure 200, which helps the air to contact the surface of the steel sections 800 more fully, improves heat exchange efficiency, and further promotes cooling uniformity.

[0075] In one embodiment, the section steel 800 is flipped 90 degrees each time. This flipping operation balances the shrinkage stress of the section steel 800 in all directions, preventing deformation caused by prolonged cooling in a single orientation. Each 90-degree flip ensures uniform cooling of the section steel 800 in all directions, thereby reducing the risk of deformation.

[0076] In one embodiment, the steel section 800 is flipped in the same direction each time. By flipping the steel section 800 in the same direction, it is ensured that the cooling process continues on all surfaces of the steel section 800, avoiding cooling interruptions or temperature fluctuations. This continuity helps maintain a stable cooling rate and temperature distribution, improving cooling quality.

[0077] Using a fixed flipping direction simplifies the operation process and reduces operator judgment and processing time. This standardized operating procedure helps improve production efficiency and reduces the possibility of human error.

[0078] Flipping the 800 steel profile in the same direction can reduce the complexity of the flipping mechanism or equipment. Because the flipping direction is fixed, the design of the flipping mechanism can be simpler and more compact, reducing manufacturing costs and maintenance difficulties.

[0079] In one embodiment, the positions of the left nozzle 123 and the right nozzle 124 are adjusted before the steel profile 800 enters the water mist cooling structure 100. A blower assembly is used to disperse the water stains on the steel profile 800 before it leaves the water mist cooling structure.

[0080] Adjusting the positions of the left nozzle 123 and the right nozzle 124 ensures that the cooling water can be sprayed more accurately onto the key cooling areas of the steel profile 800, improving cooling efficiency and uniformity, and also accommodating steel profiles of different sizes. A proper nozzle position ensures that the cooling water can more effectively contact the surface of the steel profile 800, accelerating heat transfer and dissipation, thereby increasing the cooling rate.

[0081] Water residue can cause corrosion on the surface of the steel profile 800, affecting the product's service life and performance. Using a blower to disperse water residue before the steel profile 800 leaves the water mist cooling structure 100 can prevent water residue from remaining on the surface of the steel profile 800 and avoid adverse effects on subsequent processes (such as cutting and welding).

[0082] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention have been clearly and completely described above with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0083] Therefore, the above detailed description of the embodiments of the invention disclosed in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0084] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0085] In the description of this invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0086] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0087] In this invention, unless otherwise expressly specified and limited, "above or below" a first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0088] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0089] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A steel section cooling device, characterized in that, include: A water mist cooling structure includes a first conveying assembly and a nozzle assembly, the nozzle assembly being used to spray coolant toward the profile steel on the first conveying assembly; An air-cooled structure includes a second conveying component, wherein the conveying direction of the second conveying component is perpendicular to the conveying direction of the first conveying component; A segmented saw is installed at the output end of the first conveying component; A cooling bed input structure is installed at the output end of the segmented saw. The conveying direction of the cooling bed input structure is parallel to the conveying direction of the first conveying component, and the output end of the cooling bed input structure is set towards the input end of the second conveying component. At least two flip structures are provided, each of which is spaced apart along the second conveying component; as well as A cooling bed output structure is installed at the output end of the second transmission component, and the transmission direction of the cooling bed output structure is parallel to the transmission direction of the first transmission component.

2. The steel section cooling device according to claim 1, characterized in that, The nozzle assembly includes an upper nozzle, a lower nozzle, a left nozzle, and a right nozzle. The left nozzle and the right nozzle are located on the left and right sides of the first conveying assembly, respectively, and the upper nozzle and the lower nozzle are located on the upper and lower sides of the first conveying assembly, respectively.

3. The steel section cooling device according to claim 2, characterized in that, The water mist cooling structure further includes a first frame, a first conveying assembly mounted on the first frame, a left nozzle and a right nozzle slidingly engaging with the first frame along the width direction of the first conveying assembly, an upper nozzle mounted on the top of the first frame, and a lower nozzle mounted on the bottom of the first frame.

4. The steel section cooling device according to claim 2, characterized in that, The first conveying assembly includes multiple conveying rollers and cooling gaps formed between adjacent conveying rollers. At least two of the cooling gaps are equipped with nozzle assemblies. Each nozzle assembly has at least three upper nozzles, at least three lower nozzles, at least three left nozzles, and at least three right nozzles at each cooling gap. The three upper nozzles are spaced apart along the conveying direction of the first conveying assembly, with the middle upper nozzle facing the cooling gap and the two side upper nozzles inclined towards the cooling gap. The three lower nozzles are also spaced apart along the conveying direction of the first conveying assembly, with the middle lower nozzle facing the cooling gap and the two side lower nozzles inclined towards the cooling gap. Similarly, the three left nozzles and three right nozzles are spaced apart along the conveying direction of the first conveying assembly.

5. The steel section cooling device according to any one of claims 1 to 4, characterized in that, The water mist cooling structure also includes a blower assembly, which is located at the output end of the first conveying assembly and is positioned toward the input end of the first conveying assembly.

6. A method for cooling profiled steel based on the profiled steel cooling device according to any one of claims 1 to 5, characterized in that, Includes the following steps: Hot-rolled steel sections are fed into a water mist cooling structure for water cooling. The water-cooled steel sections are then sent into an air-cooling structure for air cooling. The steel profile enters the air-cooling structure from a horizontal position, and is then immediately flipped to a vertical position. When the steel profile approaches the output structure of the cooling bed, it is flipped back to a horizontal position.

7. The method for cooling structural steel according to claim 6, characterized in that, After the steel section leaves the water mist cooling structure, the steel section is segmented and arranged in sequence on the cooling bed input structure. Multiple sections of steel are simultaneously fed into the air-cooled structure.

8. The method for cooling structural steel according to claim 6, characterized in that, Each time the steel section is flipped, the angle is 90 degrees.

9. The method for cooling structural steel according to claim 8, characterized in that, Each time, the steel section is flipped in the same direction.

10. The method for cooling structural steel according to claim 6, characterized in that, Before the steel profile enters the water mist cooling structure, adjust the positions of the left and right nozzles; Before the steel profile leaves the cooling structure, use a blower to blow away any water stains on it.

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