An on-line cooling device with post-rolling position stabilization and configuration reduction and its control method

Abstract

The present invention discloses an on-line cooling device with post-rolling position stabilization and configuration reduction and its control method, which relates to the technical field of hot rolling cooling. It includes N unitary cooling mechanisms arranged along the moving direction of the cooling roller table. Each unit comprises a lifting assembly, a cooling assembly, a support assembly, a driving assembly and a control system. The lifting assembly drives the grid-type moving framework to vertically lift through a screw lift, driving the upper header to adjust the distance from the hot-rolled product. The support assembly is symmetrically distributed with I-shaped cross-section support beams, reducing the overall structural height. The control method is based on unitized layout. The upper headers of a single unit are configured into 5 to 8 groups, and the height, flow rate and cooling mode are independently regulated by the control system to achieve dynamic and precise adaptation to different process requirements. The present invention solves the problems of poor stability, low regulation accuracy and high maintenance cost of traditional devices by streamlining the structure, optimizing the load distribution and modular control, significantly improving the cooling effect and enhancing the process adaptability and economy.

Description

Technical Field

[0001] The present invention relates to the technical field of hot rolling cooling, and in particular to a post-rolling stabilizing and reducing-type online cooling device and a control method thereof. Background Art

[0002] During the hot rolling process of metal materials, controlled cooling is crucial to improving product performance. Appropriate cooling processes can achieve ideal grain size, metallographic structure, and precipitation distribution for products such as metal sheets and strips, thereby optimizing key mechanical properties such as strength, ductility, toughness, and fatigue performance, thereby extending actual service life. With the advancement of modern industrialization, advanced cooling processes such as ACC (accelerated cooling) and UFC (ultra-rapid cooling) have rapidly developed to meet the increasingly stringent quality requirements of downstream industries for steel and other metal materials. This has also placed higher demands on the refined and intelligent control of corresponding cooling devices.

[0003] Chinese Patent Publication No. CN116121503A discloses a continuous quenching and cooling device for steel sheet piles. The device comprises a frame, a first lifting mechanism, a second lifting mechanism, and multiple quenching units arranged along the length of the frame. The quenching units include a transmission mechanism and a water spray mechanism. The lifting mechanism within the frame adjusts the height of the headers to accommodate different steel specifications and cooling process requirements. While this technical solution discloses adapting to different process requirements through the lifting mechanism, the overall height of the structure is relatively high. Due to the characteristics of the frame structure, the high center of gravity can easily lead to structural instability when subjected to heavy loads. Furthermore, the large amount of steel used to fix the frame not only increases material costs but also makes the device bulky and difficult to install and maintain. Furthermore, conventional cooling devices typically utilize more than ten headers with unified control, which significantly limits control accuracy and applicable processes. Breaking down the cooling device into unitized cooling mechanisms would also significantly increase the amount of basic steel structure and production costs.

[0004] Therefore, in order to adapt to the concepts of green manufacturing and sustainable development, it is urgent to develop a cooling device that integrates high stability, high-precision adjustment and economic practicality to meet the diverse adaptation needs of advanced cooling processes. Summary of the Invention

[0005] In response to the technical problems raised above, the present invention provides a post-rolling stable and reduced-configuration online cooling device and a control method thereof, so as to overcome the problems in the prior art of the cooling device such as complicated structural design, low control accuracy, low adaptability and high subsequent maintenance costs.

[0006] To achieve the above purpose, the technical means adopted by the present invention are as follows:

[0007] An on-line cooling device for post-rolling position stabilization and configuration reduction, comprising: N unitary cooling mechanisms arranged continuously or at intervals along the moving direction of the cooling roller table, where N ≥ 1;

[0008] Each of the unitary cooling mechanisms includes:

[0009] A lifting assembly, including a screw lift and a moving framework connected thereto. The screw lift is fixed to the upper part of the support beam, and the lower part of the moving framework is installed with and bears an upper header;

[0010] A cooling assembly, including the upper header and a lower header. The upper header is connected to a cooling medium supply system through a water inlet pipeline;

[0011] A support assembly, including a support beam with an I-shaped cross-section. The support beams are symmetrically distributed at the bottom of the cooling device and fixed to the ground;

[0012] A control system configured to independently regulate the height, flow rate, and cooling mode of the upper header in each unitary cooling mechanism.

[0013] Furthermore, the moving framework is a grid-type steel structure. The hollow area inside it houses the screw lift, and the grid size is adapted to the installation layout of the upper header to ensure that the upper header receives a uniform supporting force.

[0014] Furthermore, the number of the support beams is 4 groups, which are symmetrically distributed. Its height H Z is adapted to the minimum distance H min between the upper header and the hot-rolled product, and the adjustable height H of the screw lift satisfies H = H max −H min where H max is the maximum adjustment distance.

[0015] Furthermore, the support beam on the side close to the drive of the cooling roller table adopts a split structure, which is divided into three parts in the vertical direction: upper, middle, and lower:

[0016] The upper and middle parts are each a single small support beam;

[0017] The lower part includes two small support beams, which are arranged in the gap between adjacent roller table drives;

[0018] The small support beam in the middle is widened in the horizontal direction to connect the upper and lower parts.

[0019] Furthermore, the screw lift is configured with a guiding member, including a guiding column fixed to the support beam and a guiding sleeve fixed to the moving framework. The guiding sleeve slides along the guiding column to limit the lifting trajectory of the moving framework to a vertical linear motion.

[0020] Further, the guiding member further includes a positioning pin for ensuring the installation position accuracy of the guide sleeve and the guide post.

[0021] Further, it further includes a driving assembly, including a lifting motor, a commutator and connecting lines. The lifting motor and the commutator are installed on the upper part of the moving frame, and the moving frame is driven to vertically lift through the screw lift.

[0022] Further, the support beam and the moving frame are topologically optimized based on a mathematical algorithm. The optimization parameters include material properties, load distribution, space limitations and economic costs to form a lightweight support structure.

[0023] Further, the number of the upper headers in a single unit cooling mechanism is 5 - 8 groups, and each group of upper headers is equipped with an independent valve group, and its opening and closing and flow rate are independently regulated by the control system.

[0024] The present invention also provides a control method for an on-line cooling device for post-rolling stability and reduction configuration, including:

[0025] S1. Real-time collect the position, transmission speed, temperature distribution, specification parameters and pre-cooling process parameters of the hot-rolled product;

[0026] S2. Based on a preset production optimization model, determine the target cooling process parameters of each unit cooling mechanism according to the parameters in S1. The target cooling process parameters include: the height of the upper header, the cooling mode and the selection of the controlled cooling method, the flow rate distribution and the opening and closing time sequence of each group of headers;

[0027] S3. Dynamically adjust the vertical height and the cooling mode of the upper headers in each unit cooling mechanism through the control system, and independently control the controlled cooling method and the flow rate of each group of upper headers, so as to realize sectional differential cooling of the hot-rolled product during continuous transmission;

[0028] Wherein, the cooling mode includes the switching between conventional cooling, accelerated cooling and ultra-fast cooling, and the cooling modes of different unit cooling mechanisms can be independently configured; the controlled cooling method includes the switching between air cooling, laminar flow cooling and jet cooling, and the controlled cooling methods of each group of upper headers can be independently configured.

[0029] Due to the adoption of the above technical solutions, compared with the prior art, the present invention has the following advantages:

[0030] 1. An on-line cooling device with post-rolling position stabilization and configuration reduction and its control method provided by the present invention adopt a unitary cooling mechanism, a grid-type moving framework and a split I-shaped support beam, eliminating the redundant structure of the traditional four-column frame, improving the space utilization rate, reducing the total height of the device, reducing the amount of basic steel structure, and greatly saving the material cost. At the same time, the I-shaped cross-section support beam and the symmetrical layout design optimize the load distribution, significantly improving the anti-deformation ability and operation stability of the device.

[0031] 2. An on-line cooling device with post-rolling position stabilization and configuration reduction and its control method provided by the present invention, each unitary cooling mechanism is configured with 5-8 groups of upper headers. Combined with four independently driven screw elevators and an integrated control system, the height, cooling mode, controlled cooling method, opening and closing of each group of headers and flow rate of the upper headers in each unit can be dynamically adjusted in real time, accurately adapting to the cooling requirements of different specifications of hot-rolled products (such as the thickness and material differences of strip materials), improving the hit rate of the cooling process, and avoiding the regulation limitations under the traditional unified control mode.

[0032] 3. An on-line cooling device with post-rolling position stabilization and configuration reduction and its control method provided by the present invention, the grid-type hollow design of the moving framework and the split support beam structure facilitate the maintenance and replacement of key components such as screw elevators and upper headers, without the need to disassemble the device as a whole, improving the maintenance efficiency. In addition, the unitary modular layout supports the flexible addition, reduction or interval arrangement of the cooling mechanism on the production line, quickly responding to the adaptation requirements of diverse cooling processes, and having strong expandability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0034] Figure 1 It is a three-dimensional structure diagram of an on-line cooling device with post-rolling position stabilization and configuration reduction according to an embodiment of the present invention;

[0035] Figure 2 It is a top view of an on-line cooling device with post-rolling position stabilization and configuration reduction according to an embodiment of the present invention;

[0036] Figure 3 It is a left view of an on-line cooling device with post-rolling position stabilization and configuration reduction according to an embodiment of the present invention;

[0037] Figure 4 It is a front view of an on-line cooling device with post-rolling position stabilization and configuration reduction according to an embodiment of the present invention;

[0038] Figure 5Schematic diagram of the support beam of an on-line cooling device with post-rolling stability and reduced configuration according to an embodiment of the present invention;

[0039] Figure 6 Schematic diagram of a screw elevator of an on-line cooling device with post-rolling stability and reduced configuration according to an embodiment of the present invention;

[0040] Figure 7 Flowchart of the control method of an on-line cooling device with post-rolling stability and reduced configuration according to an embodiment of the present invention.

[0041] In the figure: 1. Lifting assembly; 11. Screw elevator; 111. Guide post; 112. Guide sleeve; 113. Positioning pin; 12. Moving frame; 2. Cooling assembly; 21. Upper header; 22. Lower header; 23. Water inlet pipeline; 3. Support assembly; 31. Support beam; 311. Small support beam; 4. Driving assembly; 41. Lifting motor; 42. Commutator; 43. Connection line; 5. Control system; 6. Cooling roller table; 61. Roller table drive; 62. Roller table bracket. Detailed implementation manners

[0042] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0043] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout; the described embodiments are some but not all of the embodiments of the present invention; the embodiments described below with reference to the drawings and directional terms are all exemplary and are intended to explain the present invention and should not be construed as limiting the present invention; based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Parts and equipment all adopt conventional models in the prior art, and the circuit connections adopt conventional connection methods in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the well-known prior art of those skilled in the art. The embodiments of the present invention will be described in detail below with reference to the drawings:

[0044] Embodiment

[0045] As Figures 1 to 6 shown, an on-line cooling device with post-rolling stability and reduced configuration includes: N unitary cooling mechanisms arranged continuously or at intervals along the moving direction of the cooling roller table, N≥1;

[0046] Each of the unit cooling mechanisms comprises:

[0047] like Figure 1 and Figure 2 As shown, the lifting assembly 1 comprises four symmetrically arranged spiral elevators 11 and a connected mobile frame 12. To improve space utilization, the mobile frame 12 utilizes a grid-like steel structure composed of multiple interconnected spaces. This reduces the weight of the mobile frame 12 while ensuring sufficient strength, while also lowering material costs and the driving load during movement. Furthermore, the hollow portion within the structure not only facilitates the placement of equipment such as the spiral elevators 11, making the entire device more compact, but also facilitates equipment maintenance and overhaul, allowing personnel to easily access the interior through the hollow portion for operation.

[0048] The cooling assembly 2 includes an upper header 21, a lower header 22, and an upper header water inlet pipe 23. The upper header 21 is installed and carried on the lower part of the mobile frame 12, and is used to spray water to cool the upper surface of hot-rolled products such as metal plates and strips. The lower header 22 is arranged between each group of cooling rollers 6, and is used to spray water to cool the lower surface of the hot-rolled products. The mobile frame 12 connects the upper header 21 and the spiral elevator 11. According to the process cooling requirements, when the spiral elevator 11 controls the mobile frame 12 to move up and down in the vertical direction, the upper header 21 will be driven at the same time, and its position height and distance from the hot-rolled products will be adjusted. When maintaining and replacing the upper header 21, this connection arrangement also provides a better operating space. There is no need to dismantle the entire mobile frame 12. Only the corresponding upper header 21 part needs to be dismantled, which effectively reduces maintenance costs and repair time. However, it should be noted that the size of the grid-type steel structure of the mobile frame 12 should be compatible with the size of the upper header 21, that is, there should be sufficient installation space to arrange the upper header 21 and its related guard plates, pipes and other components. For example, if there is a height difference between each group of upper headers 21 or different cooling areas are divided, the size of the grid-type steel structure should be adapted thereto; and at the same time, the connection strength between adjacent cells should also be taken into account so that the upper header 21 can be uniformly supported during the lifting process to withstand the weight of itself and the coolant as well as various loads such as inertia force and impact force generated during movement and cooling.

[0049] Further, if Figure 1 and Figure 4 As shown, the support assembly 3 includes four groups of support beams 31, which are symmetrically distributed at the bottom of the cooling device so that the load is evenly distributed at each support point to prevent local overload. The cross-section of the support beam 31 can adopt an I-shaped structure. Compared with a solid beam structure, this cross-sectional shape can effectively reduce its own weight and improve material utilization while ensuring sufficient strength under the same load-bearing capacity requirements. The specific dimensions of the I-shaped structure are adapted to the layout span of the cooling device and the load-bearing capacity of a single group of support beams, such asFigure 1 As shown, when designing the support beam structure, the dimensions and spatial arrangements of components such as the moving frame 12, the upper header 21, the roller drive 61, and the roller support 62 should be considered, and the load-bearing capacity and limited space should be reasonably allocated. In the traditional fixed-frame structure, the elevator is mainly arranged on the crossbeam of the frame, with multiple transmission components. The total height of the device is usually above 5m, and the overall center of gravity is relatively high. In the present invention, as Figure 1 shown, the screw elevator 11 is fixed to the upper part of the support beam 31. At the same time, the linkage design such as the transmission shaft is abandoned, and the screw elevator 11 is directly connected to the moving frame 12, simplifying the structure and improving the transmission efficiency. Under this design, the total height of the cooling device is only 3.6m, which is nearly 30% lower than that of the traditional fixed frame, effectively improving the stability of the device. According to reliable engineering cost statistics, compared with the traditional frame-type cooling device, under the same header configuration conditions, the consumption of the basic steel structure of the cooling device of the present invention is reduced by more than 20%, greatly reducing the production cost. In addition, as the basic load-bearing structure of the whole device, the support beam 31 has sufficient strength and stiffness, and can provide a more stable installation foundation for the screw elevator 11, enabling it to work reliably when bearing the weight and moving load of related components, and avoiding deformation or damage due to excessive local stress, which affects the control accuracy of the cooling process.

[0050] Furthermore, as Figure 1As shown in the figure, the drive assembly 4 includes a lifting motor 41 and two sets of commutators 42 installed on the upper part of the moving frame 12, several connecting lines 43, and a protective cover for protecting the connecting lines 43. Among them, the connecting lines 43 are used to connect the lifting motor 41, the commutator 42, and the screw lift 11; the lifting motor 41 is an industrial motor with high torque output and precise speed control characteristics, providing the driving force required for the device to lift; the commutator 42 is used to cooperate with the lifting motor 41, distribute and adjust the direction of the power of the lifting motor 41 according to the control signal, realize the switching of the rising and falling actions of the screw lift 11 and the speed control, and ensure the accuracy and flexibility of the device lifting action. When the cooling device is running, the integrated control system 5 drives the screw lift 11 by controlling the lifting motor 41 and the commutator 42, and controls the moving frame 12 carrying the upper header 21 to move up and down in the vertical direction, realizing the precise adjustment of its position height and the distance from the hot-rolled product. And in this embodiment, when the position of the moving frame 12 changes, the lifting motor 41 and the commutator 42 also move simultaneously with the moving frame 12. This arrangement makes the lifting motor 41, the commutator 42, and the screw lift 11 form a relatively compact whole in space. During the movement, they move together as an integrated unit, reducing the need for additional space; and compared with the scattered arrangement of components such as the lifting motor 41 and the commutator 42, the power transmission distance between the lifting motor 41 and the screw lift 11 is relatively fixed and short. At different height positions, the power output by the lifting motor 41 can more accurately control the lifting speed and direction of the screw lift 11 through the commutator 42, which is beneficial to realizing efficient function integration in a limited space. In addition, the lifting motor 41 and the commutator 42 moving together with the moving frame 12 also makes the center of gravity distribution of the entire device more reasonable. During the movement, their weights can be reasonably balanced and supported as part of the moving frame 12. Compared with the situation where components such as the lifting motor 41 are fixed in other positions, this arrangement can reduce the structural instability factors caused by the weight change of the moving components. For example, when the moving frame 12 rises or falls, the weights of the lifting motor 41 and the commutator 42 will not generate additional unbalanced torques on other parts of the device due to the position change, thereby improving the stability of the device during the lifting process.

[0051] Furthermore, in actual application, considering the production requirements of strip materials with different thicknesses and different materials, during the process of adjusting the height of the upper header 21, the height H of the support beam 31 z combined with the adjustable height H of the screw lift 11 can meet the minimum distance H between the upper header 21 and the hot-rolled product min to the maximum distance H max of the adjustment range, and flexibly adapt to various production process requirements. Such as Figure 1As shown, the height of the cooling roller table 6 from the ground is set to 0.92 m. According to production requirements, H min is designed to be 0.72 m, and H max is 1.72 m, H = H max -H min = 1.00 m; At the same time, in order to match H min appropriately, the height H z of the support beam 31 is designed to be 1.81 m to ensure that the upper header 21 can be in a suitable working position, and the overall center of gravity of the device is reasonably distributed and the structure is stable.

[0052] Furthermore, the cooling roller table 6 is stably supported from below by the roller table support 62, and is equipped with multiple sets of roller table drives 61 arranged on one side of it to drive the roller table to rotate to realize the transmission of hot-rolled products. To match the arrangement of the roller table drive 61 and make the structure more compact, the support beam 31 arranged on the same side as it adopts a split support beam structure, and its total height is kept consistent with that of other conventional support beams to ensure the levelness and stability of the entire device. The structures and connection details of each part are as Figure 5 shown. In the vertical direction, it includes upper, middle and lower parts. The cross-sectional shapes and sizes of each part are designed according to the local loads borne and the requirements of the overall structural stability. Among them, the upper and middle parts are each a single small support beam 311. The small support beam 311 in the middle part plays a role in connecting the upper and lower parts in the vertical direction, and expands the connection area and bearing capacity by increasing the width in the horizontal direction to better disperse the loads transmitted from the upper part and provide a stable foundation for the lower connection; the lower part includes two small support beams 311, and the designed distance between them is adapted to the position of the roller table drive 61, and can just be arranged in the gaps between two adjacent groups of the roller table drive 61, which not only avoids spatial interference with it, but also enables all the support beams 31 to be symmetrically arranged under the moving frame 12, ensuring the uniformity of the force during the operation of the overall device.

[0053] Furthermore, to achieve the structural lightweight and performance optimization of the support beam 31 and the moving frame 12, the present invention adopts a topology optimization method based on a mathematical algorithm, combines the actual engineering requirements, conducts a structural reduction design on the two, and uses the topology optimization module in the OptiStruct topology optimization software to perform structural optimization based on the variable density method. This algorithm discretizes the design domain into finite element meshes, uses the element density as the design variable, and takes the maximization of structural stiffness or the minimization of mass as the goal, and iteratively solves the optimal material distribution.

[0054] Define the core constraints: the total volume of the material is reduced by 20% - 30%, the maximum equivalent stress does not exceed 80% of the material yield strength, the displacement of the key nodes does not exceed the allowable value, and the minimum member size meets the manufacturing process requirements.

[0055] Further, static loads and dynamic loads are applied to the support beam 31. The static loads include the total weight of the moving frame 12, the upper header 21, and the coolant. The dynamic loads consider the inertial force during the lifting and lowering process of the screw jack 11 and the coolant impact force. The boundary condition is that the bottom of the support beam 31 is fixed, simulating a rigid connection with the ground.

[0056] Concentrated loads and dynamic loads are applied to the moving frame 12. The concentrated loads include the vertical force at the installation point of the upper header 21, and the dynamic loads include the vibration loads during the lifting and lowering process. The boundary condition is that the connection between the moving frame 12 and the screw jack 11 is a hinged constraint.

[0057] Further, through automatic iterative calculations by software, materials in low-stress areas are gradually removed, and finally a topological optimization structure mainly in the shape of a skeleton or truss is generated to ensure the efficient distribution of materials along the principal stress direction. Compared with the traditional I-beam, the material consumption of the optimized support beam 31 is reduced by 25% - 30%, reducing the mass of a single support beam, making the stress concentration area more evenly distributed, reducing the manufacturing cost at the same time, and reducing the weight of the replacement parts during maintenance, further saving labor and transportation costs.

[0058] Further, the screw jack 11 is equipped with guiding members, such as guiding columns 111 and guiding sleeves 112, to limit the unexpected deviation of the movement trajectory when the position of the moving frame 12 changes, ensuring the stability of the structure during the lifting and lowering process and preventing lateral swing. As Figure 1 and Figure 6 shown, the guiding members include guiding columns 111 and guiding sleeves 112. The guiding columns 111 are connected to the support beam 31, and the guiding sleeves 112 are connected to the moving frame 12. When the position of the moving frame 12 changes, the guiding sleeves 112 move simultaneously. The guiding columns 111 provide additional support and stability to the moving frame 12 connected thereto by restricting the spatial position of the guiding sleeves 112, thereby guiding the movement trajectory of the upper header 21 to be a linear movement in the vertical direction and effectively restricting its unreasonable movement in the horizontal direction. In addition, as Figure 6 shown, the guiding members further include positioning pins 113 to ensure the position accuracy of the guiding sleeves 112 during installation.

[0059] Further, when hot-rolling products such as cooling strip steel, traditional cooling devices usually have more than 10 groups of headers and are uniformly controlled, which results in low regulation accuracy and cannot flexibly meet the increasingly diverse cooling process requirements.

[0060] Therefore, the present invention also provides a control method for the cooling device based on the above embodiments. After unitizing the cooling device and then refining it, the number of headers of a single unit-type cooling mechanism is set to 5 - 8 groups to improve the hit rate of the whole-process on-line cooling process. As Figure 1 and Figure 2As shown in the figure, the number of upper headers 21 is 6 groups, and each group is equipped with an independent water inlet pipeline 23. The control system 5 has a production optimization model built in, and is equipped with a parameter acquisition and feedback module, and has an efficient signal interaction and feedback control mechanism with the cooling roller table 6. When the cooling device of the embodiment cooperates with the cooling roller table 6 to cool the hot-rolled product, the control system 5 can dynamically and independently adjust the height, cooling mode, controlled cooling method, opening and closing of each group of headers, and flow rate of the upper headers 21 in each unit type cooling mechanism in real time, so that the hot-rolled product is always in an ideal cooling state during continuous transmission, and controls the roller table speed and feedbacks the real-time position of the product. This refined control method, on the one hand, utilizes the unit type characteristics. By reducing the number of groups of upper headers 21 and the independent power and transmission systems of each unit, it can quickly adapt to the changes in the cooling process requirements of different hot-rolled product types and achieve more accurate local online cooling intensity adjustment; on the other hand, it also makes full use of the characteristics of the stable position and reduced structure of the cooling device of the present invention. Although the number of unit type cooling mechanisms increases after refined control, the amount of basic steel structure used and the production cost are effectively controlled, achieving the goals of efficient utilization of resources and energy conservation and emission reduction.

[0061] As Figure 7 shown, the present invention also provides a control method for an on-line cooling device with a stable position and reduced structure after rolling, including:

[0062] S1. Real-time collect the position, transmission speed, temperature distribution, specification parameters and pre-cooling process parameters of the hot-rolled product;

[0063] S2. Based on a preset production optimization model, determine the target cooling process parameters of each unit type cooling mechanism according to the parameters in S1. The target cooling process parameters include: the height of the upper header 21, the selection of cooling mode and controlled cooling method, the flow rate distribution and opening and closing time sequence of each group of headers;

[0064] S3. Dynamically adjust the vertical height and cooling mode of the upper header 21 in each unit type cooling mechanism through the control system 5, and independently control the controlled cooling method and flow rate of each group of upper headers 21, so as to achieve sectional differential cooling of the hot-rolled product during continuous transmission;

[0065] Among them, the cooling mode includes the switching of conventional cooling, accelerated cooling and ultra-fast cooling, and the cooling modes of different unit type cooling mechanisms can be independently configured; the controlled cooling method includes the switching of air cooling, laminar flow cooling and jet cooling, and the controlled cooling methods of each group of upper headers 21 can be independently configured.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An on-line cooling device for post-rolling stability and position reduction configuration, characterized in that Comprising: N unitary cooling mechanisms arranged continuously or at intervals along the moving direction of the cooling roller path, where N≥1; Each of the said unitary cooling mechanisms includes: A lifting assembly (1), including a screw lift (11) and a moving frame (12) connected thereto. The screw lift (11) is fixed to the upper part of the support beam (31), and the lower part of the moving frame (12) is installed with and bears a upper header (21); A cooling assembly (2), including the upper header (21) and a lower header (22). The upper header (21) is connected to a cooling medium supply system through a water inlet pipeline (23); A support assembly (3), including a support beam (31) with an I-shaped cross-section, which is symmetrically distributed at the bottom of the cooling device and fixed to the ground; A driving assembly (4), including a lifting motor (41), a commutator (42) and a connecting line (43). The lifting motor (41) and the commutator (42) are installed on the upper part of the moving frame (12), and the moving frame (12) is driven to vertically lift through the screw lift (11); A control system (5), configured to independently regulate the height, flow rate and cooling mode of the upper header (21) in each unitary cooling mechanism.

2. The on-line cooling device for post-rolling stability and position reduction configuration according to claim 1, characterized in that The moving frame (12) is a grid-type steel structure, and its internal hollow area accommodates the screw lift (11), and the grid size is adapted to the installation layout of the upper header (21) to ensure that the upper header (21) receives a uniform supporting force.

3. The online cooling device for post-rolling position stabilization and configuration reduction according to claim 1, characterized in that The number of the support beams (31) is 4 groups, and its height H Z is adapted to the minimum distance H between the upper header (21) and the hot-rolled product min , and the adjustable height H of the screw lift (11) satisfies H = H max - H min , where H max is the maximum adjustment distance.

4. The online cooling device for post-rolling stable position and reduced configuration according to claim 1, characterized in that, The support beam (31) adopts a split structure on the side close to the cooling roller drive (61), and is divided into three parts: upper, middle and lower in the vertical direction: The upper and middle parts are each a single small support beam (311); The lower part includes two small support beams (311), which are arranged in the gap between adjacent roller drives (61); The small support beam (311) in the middle is widened in the horizontal direction to connect the upper and lower parts.

5. The on-line cooling device for post-rolling stability and position reduction configuration according to claim 1, characterized in that, The screw lift (11) is configured with a guiding member, including a guiding column (111) fixed to the support beam (31) and a guiding sleeve (112) fixed to the moving frame (12). The guiding sleeve (112) slides along the guiding column (111) to limit the lifting trajectory of the moving frame (12) to a vertical linear motion.

6. The online cooling device for post-rolling stability and position reduction and configuration according to claim 5, characterized in that, The guiding member further includes a positioning pin (113) for ensuring the installation position accuracy between the guiding sleeve (112) and the guiding column (111).

7. The online cooling device for post-rolling stability and position reduction and configuration according to claim 1, characterized in that, The support beam (31) and the moving frame (12) are topologically optimized based on a mathematical algorithm, and the optimization parameters include material properties, load distribution, space limitations and economic costs to form a lightweight support structure.

8. The on-line cooling device for post-rolling stability and position reduction according to claim 1, wherein The number of upper headers (21) in a single unitary cooling mechanism is 5 to 8 groups, and each group of upper headers (21) is equipped with an independent valve group, and its opening and closing and flow rate are independently regulated by the control system (5).

9. A control method for the cooling device according to any one of claims 1 to 8, characterized in that, Comprising: S1. Real-time collect the position, transmission speed, temperature distribution, specification parameters and previous cooling process parameters of the hot-rolled product; S2. Based on a preset production optimization model, determine the target cooling process parameters of each unit cooling mechanism according to the parameters in S1. The target cooling process parameters include: the height of the upper header (21), the selection of cooling mode and controlled cooling method, the flow rate distribution and opening / closing time sequence of each group of headers. S3. Dynamically adjust the vertical height and cooling mode of the upper header (21) in each unit cooling mechanism through the control system (5), and independently control the controlled cooling method and flow rate of each group of upper headers (21), so as to achieve sectional differential cooling of the hot-rolled product during continuous transmission. Among them, the cooling mode includes the switching between conventional cooling, accelerated cooling and ultra-fast cooling, and the cooling modes of different unit cooling mechanisms can be independently configured; the controlled cooling method includes the switching between air cooling, laminar flow cooling and jet cooling, and the controlled cooling methods of each group of upper headers (21) can be independently configured.

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