A swinging laminar cooling device and system

Abstract

The application provides a swing type laminar cooling device and system, which comprises a supporting mechanism, a driving mechanism and two pipeline mechanisms, each of the pipeline mechanisms comprises a switching pipe and a pipeline unit, each of the pipeline units comprises two water collecting pipes and a plurality of water spraying pipes which are arranged in a transverse direction, and the driving mechanism is used for driving the two switching pipes to rotate so as to drive the pipeline units to swing up and down. Thus, the up and down swinging of the adjusting pipeline unit is driven by the driving mechanism, the continuous water flow direction is changed, the track swept by the water flow is controllable, the texture is diversified, the technical limitation of the traditional laminar cooling fixed position is broken, the cooling water flow is changed from the traditional "parallel straight track" to "dynamic wave track", the orientation limitation of the linear growth of metal crystal grains is effectively broken, and the anisotropy problem of the steel performance is relieved; the track is not repeated, the covered area is increased, the cooling effect is enhanced, the energy efficiency ratio is improved, and the cooling effect is remarkable.

Description

Technical Field

[0001] This invention relates to the field of laminar flow cooling technology, and in particular to a swing-type laminar flow cooling device and system. Background Technology

[0002] As a core component of the controlled rolling process (TMCP) in the thin slab continuous casting and rolling production line, laminar flow cooling technology directly determines the microstructure and final performance of hot-rolled steel strip, establishing a key quality control link between the finishing mill and the coiler.

[0003] In current industrial production, traditional laminar flow cooling technology generally adopts a fixed machine position design. Cooling water flows vertically through the water collection beam branch pipes and is sprayed onto the slab surface, forming a parallel linear cooling trajectory in a single direction. This fixed cooling mode results in a clear linear orientation of metal grain growth at the microscopic level of the steel strip, and the grain size distribution tends to be uniform. This directly leads to performance differences in the steel in the grain growth direction and the vertical direction, i.e., performance anisotropy. At the same time, the linear trajectory of traditional laminar flow cooling has inherent defects such as limited coverage area and insufficient cooling uniformity. This not only reduces the cooling energy efficiency ratio and increases production energy consumption, but also makes it difficult to adapt to the personalized cooling needs of different steel grades and slab specifications.

[0004] Therefore, it is necessary to propose an oscillating laminar flow cooling device and system to solve or at least alleviate the above-mentioned defects. Summary of the Invention

[0005] The main objective of this invention is to provide an oscillating laminar flow cooling device and system to solve the problem of fixed cooling trajectory caused by the fixed form of laminar flow cooling technology in the prior art.

[0006] To achieve the above objectives, the present invention provides an oscillating laminar flow cooling device, comprising a support mechanism, a drive mechanism, and two pipe mechanisms longitudinally arranged opposite each other on both sides of the support mechanism; wherein, The support mechanism has a water storage chamber inside, and the bottom of the support mechanism has a water inlet for connecting to an external water source. Each of the aforementioned piping structures includes a transfer pipe and a piping unit. Each piping unit includes two water collection pipes and multiple water spray pipes arranged at lateral intervals. The water collection pipes are connected to the transfer pipes, and one end of each water spray pipe is connected to the water collection pipe, with the spray end of the water spray pipe facing downwards. The adapter pipe extends longitudinally and is rotatably connected to the top side wall of the support mechanism. The interior of the adapter pipe is connected to the water storage chamber of the support mechanism. The drive mechanism is connected to the support mechanism. The drive end of the drive mechanism is connected to the two adapter pipes respectively through a connector to drive the two adapter pipes to rotate, thereby causing the pipeline unit to swing up and down.

[0007] Preferably, each of the pipe units further includes a diaphragm, an end plate, and two fixing brackets. The diaphragm is connected between the two water collection pipes, and the end plate is connected to the end of the water collection pipe and the diaphragm. Each water collection pipe is connected to a fixing bracket on the side away from the diaphragm. The fixing bracket has multiple fixing holes arranged laterally at intervals. The spray pipe is bent, and the spray end of the spray pipe extends to the fixing bracket of the adjacent water collection pipe and passes through the fixing hole with the opening facing downward. The spray pipes between the two water collection pipes are arranged alternately laterally.

[0008] Preferably, the connector includes a pin, a lug, and two longitudinally opposite connecting beams. The first end of the connecting beam is connected to the adapter pipe and is located near the drive mechanism. The pin is connected between the second ends of the two connecting beams and rotatably passes through the lug. The lug is connected to the drive end of the drive mechanism.

[0009] Preferably, the driving mechanism is a hydraulic cylinder, which is hinged to the support mechanism, and the lifting lug is connected to the telescopic end of the hydraulic cylinder, which is extendable vertically.

[0010] Preferably, the angular swing range between the pipe unit and the horizontal plane is 0° to 4°.

[0011] Preferably, it also includes a counterweight, with one counterweight connected to each of the adapter pipes.

[0012] Preferably, the support mechanism includes a column, a rotating shaft, and a water inlet pipe. The column has a water storage chamber inside. The water inlet pipe is connected to the bottom end of the column. The rotating shaft is connected to the top end of the column and has multiple water inlet holes spaced apart along its circumference. Both ends of the rotating shaft extend out of the column. Two connecting pipes are respectively connected to both ends of the rotating shaft and are internally connected.

[0013] Preferably, each of the pipe structures contains two pipe units, which are arranged longitudinally at intervals.

[0014] This application also provides an oscillating laminar flow cooling system, including a plurality of oscillating laminar flow cooling devices as described above, wherein the plurality of oscillating laminar flow cooling devices are arranged at intervals along the longitudinal direction.

[0015] Preferably, the pipe units of two adjacent oscillating laminar flow cooling devices oscillate in opposite directions.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a swing-type laminar flow cooling device and system, comprising a support mechanism, a drive mechanism, and two pipe mechanisms arranged longitudinally opposite to each other on both sides of the support mechanism. The support mechanism has a water storage chamber inside, and the bottom of the support mechanism has a water inlet for connecting to an external water source. Each pipe mechanism includes a transfer pipe and a pipe unit. Each pipe unit includes two water collection pipes and multiple water spray pipes arranged laterally at intervals. The water collection pipes are connected to the transfer pipes. One end of the water spray pipes is connected to the water collection pipes, and the spray end of the water spray pipes is set with its opening facing downward. The transfer pipe extends longitudinally and is rotatably connected to the top side wall of the support mechanism, and the interior of the transfer pipe is connected to the water storage chamber of the support mechanism. The drive mechanism is connected to the support mechanism. The drive end of the drive mechanism is connected to the two transfer pipes respectively through a connector to drive the two transfer pipes to rotate, thereby causing the pipe unit to swing up and down. By driving the adjustment pipe unit to swing up and down through the drive mechanism, the direction of the continuous water spray is changed, making the trajectory of the water flow controllable and diversifying the texture formation. This breaks through the technical limitations of traditional laminar flow cooling with fixed positions, transforming the cooling water flow from the traditional "parallel straight line trajectory" to a "dynamic wave trajectory." This effectively breaks the orientation restriction of linear growth of metal grains and alleviates the anisotropy problem of steel performance. Moreover, the trajectory is non-repeating, the coverage area is increased, the cooling effect is enhanced, the energy efficiency ratio is improved, and the cooling effect is significant. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of an application scenario of the overall device in one embodiment of the present invention; Figure 2 This is a side view of the overall device in one embodiment of the present invention; Figure 3 This is a three-dimensional schematic diagram of a pipe unit in one embodiment of the present invention.

[0019] The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0020] Explanation of icon numbers: 10. Support mechanism; 110. Column; 120. Rotating shaft; 130. Water inlet pipe; 140. Connector; 141. Lifting lug; 142. Connecting beam; 20. Drive mechanism; 150. Counterweight; 30. Piping mechanism; 310. Transfer pipe; 320. Piping unit; 321. Water collection pipe; 322. Spray pipe; 323. Horizontal partition; 324. End plate; 325. Fixing frame. Detailed Implementation

[0021] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0022] The technical solutions of the embodiments of the present invention 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 the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0024] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0025] Please see the appendix Figure 1-3 An embodiment of the present invention provides a swing-type laminar flow cooling device, including a support mechanism 10, a drive mechanism 20, and two pipe mechanisms 30 arranged longitudinally opposite to each other on both sides of the support mechanism 10. First, it should be noted that in this application, "transverse" refers to the axial direction of the conveying roller, while "longitudinal" refers to the conveying direction of the slab. Please refer to the accompanying drawings for details; the specific scheme is as follows: The support mechanism 10 has a water storage chamber inside, and the bottom of the support mechanism 10 has a water inlet for connecting to an external water source; each pipe mechanism 30 includes a connecting pipe 310 and a pipe unit 320, and each pipe unit 320 includes two water collection pipes 321 and multiple water spray pipes 322 arranged laterally at intervals. The water collection pipes 321 are connected to the connecting pipes 310, and one end of the water spray pipes 322 is connected to the water collection pipes 321. The spray end of the water spray pipes 322 is set with its opening facing downward; wherein, the connecting pipe 310 extends longitudinally and is rotatably connected to the top side wall of the support mechanism 10, and the interior of the connecting pipe 310 is connected to the water storage chamber of the support mechanism 10. The drive mechanism 20 is connected to the support mechanism 10, and the drive end of the drive mechanism 20 is connected to the two connecting pipes 310 respectively through the connector 140, so as to drive the two connecting pipes 310 to rotate, thereby driving the pipe unit 320 to swing up and down.

[0026] Specifically, the oscillating laminar flow cooling device in this application includes a support mechanism 10, a drive mechanism 20, and two pipe mechanisms 30. The support mechanism 10 is used for the installation and connection of other mechanisms. In order to facilitate the smooth connection of cold water to the pipe mechanism 30, the support mechanism 10 has a water storage chamber and receives cooling water through an inlet before it is transported to the pipe mechanism 30. The two pipe mechanisms 30 are arranged longitudinally opposite to each other on both sides of the support mechanism 10 to improve the coverage of the cooling water. The pipe mechanism 30 in this application can oscillate to change the cooling water spray coverage trajectory, which is mainly driven by the drive mechanism 20 to complete the oscillation.

[0027] Each of the pipe mechanisms 30 includes a connecting pipe 310 and a pipe unit 320. The connecting pipe 310 extends longitudinally and is rotatably connected to the top of the support mechanism 10, ensuring continuous communication with the water storage chamber and providing a reliable rotational basis for the swing of the pipe unit 320. It also provides a mounting connection for the pipe unit 320. Each pipe mechanism 30 can have two pipe units 320, arranged longitudinally at intervals. When the slab moves longitudinally, it can be cooled by both units sequentially, and the swing trajectories of the front and rear units can form an "overlapping and intersecting" pattern. Furthermore, each pipe unit 320 includes two water collection pipes 32. 1 and multiple water spray pipes 322 arranged at transverse intervals. The water collection pipe 321 is used to collect the cooling water from the transfer pipe 310 and distribute it to each water spray pipe 322 for spraying. It can be understood that when the drive mechanism 20 drives the transfer pipe 310 to rotate along its own axis, the pipe unit 320 connected to the transfer pipe 310 follows the rotation to realize up and down swing (although it is an arc rotation, the rotation amplitude is not large, so it can be regarded as up and down swing), thereby changing the cooling water flow from the traditional "parallel straight line trajectory" to a "dynamic wave trajectory", effectively breaking the orientation restriction of linear growth of metal grains and alleviating the anisotropy problem of steel performance.

[0028] Preferably, the swing angle of the pipe unit 320 is limited to 0°~4°, which is the optimal choice based on cooling effect, equipment compatibility and energy consumption balance. Specifically, initially, the system is marked as 0° when the pipe unit 320 is placed horizontally, and the maximum upward swing angle is when it is rotated upward to 0°~4°. At this time, the system can be adjusted and marked as 4°. After the zero adjustment is completed, when the initial position process is ready, it stops at the position rotated 2°. With 2° as the swing reference midpoint, the maximum upward swing angle (2°→4°) of the water collection beam (2°→0°) can be completely consistent with the maximum downward swing angle (both are 2°). This symmetrical oscillation mode ensures that the water spray landing point is uniform within the displacement range of the slab, avoiding the problem of one side of the trajectory being too narrow and the other side exceeding the limit due to the oscillation reference offset. Ultimately, it forms a continuous and symmetrical wave-shaped cooling trajectory, ensuring the uniformity of slab cooling. Furthermore, its oscillation frequency can be set according to the slab's moving speed, so that the water spray trajectory of adjacent oscillation cycles can achieve "gap-free connection", avoiding the occurrence of longitudinal cooling blind spots. The specific oscillation frequency can be determined by those skilled in the art based on the actual slab's moving speed during processing, the distance it travels under the entire device in a single pass, and other factors.

[0029] In a preferred embodiment of the present invention, each pipe unit 320 further includes a diaphragm 323, an end plate 324, and two fixing brackets 325. The diaphragm 323 is connected between the two water collection pipes 321. The end plate 324 is connected to the end of the water collection pipe 321 and the diaphragm 323. Each water collection pipe 321 is connected to a fixing bracket 325 on the side away from the diaphragm 323. The fixing bracket 325 has a plurality of fixing holes arranged at intervals along the transverse direction. The spray pipe 322 is bent. The spray end of the spray pipe 322 extends to the fixing bracket 325 of the adjacent water collection pipe 321 and passes through the fixing hole with the opening facing downward. The spray pipes 322 between the two water collection pipes 321 are staggered along the transverse direction.

[0030] It should be noted that the diaphragm 323 is connected between the two water collection pipes 321, and the end plate 324 is sealed at the end of the water collection pipe 321 and the diaphragm 323. Together, they form a rigid frame, which can offset the pipe deformation caused by the impact of high-pressure water flow and avoid the misalignment of the cooling trajectory due to pipe displacement. The fixing holes on the fixing bracket 325 provide precise installation positioning for the spray pipe 322, ensuring that the spray end of the spray pipe 322 is stably facing downward. The bent spray pipe 322 passes through the fixing hole and is arranged in a staggered manner in the horizontal direction, so that the spray trajectory of the two water collection pipes 321 forms a "complementary coverage" in the horizontal direction, completely eliminating the cooling blind spot of the traditional linear trajectory.

[0031] In a preferred embodiment of the present invention, the connector 140 includes a pin (not shown), a lug 141, and two longitudinally opposite connecting beams 142. The first end of the connecting beam 142 is connected to the adapter pipe 310 and is located on the side close to the drive mechanism 20. The pin is connected between the second ends of the two connecting beams 142 and is rotatably connected through the lug 141. The lug 141 is connected to the drive end of the drive mechanism 20.

[0032] It should be noted that the connecting beam 142 is located on the side close to the drive mechanism 20 to facilitate the pulling of the drive mechanism 20. The pin is used for the rotation of the connecting beam 142, and the connecting beam 142 is connected to the adapter pipe 310 to drive the connecting pipe to rotate. The lifting lug 141 is used to connect the drive end of the drive mechanism 20 to the pin and to allow the pin to rotate.

[0033] In a preferred embodiment of the present invention, the driving mechanism 20 is a hydraulic cylinder, which is hinged to the support mechanism 10. The lifting lug 141 is connected to the telescopic end of the hydraulic cylinder, and the telescopic end of the hydraulic cylinder is extendable vertically.

[0034] It is worth noting that the hydraulic cylinder has the characteristics of large thrust, high control precision and fast response speed. The slight displacement of its extension end can be accurately converted into a small-angle rotation of the transfer pipe 310. The installation method of hinged to the support mechanism 10 can adaptively adjust the cylinder angle according to the swing of the pipeline unit 320 (the position of the connecting beam 142 changes), avoiding the deformation of the mechanism caused by rigid connection.

[0035] Furthermore, it also includes a counterweight 150, with one of the counterweights 150 connected to each of the adapter pipes 310.

[0036] It should be understood that it is used to balance the gravity load of the pipe unit 320 and optimize the force state of the drive mechanism 20. Gravity balance can make the swing of the pipe unit 320 more stable, avoid "sudden stop and swing" caused by uneven gravity, ensure the accuracy of the water spray trajectory, and further improve the cooling uniformity.

[0037] Furthermore, the support mechanism 10 includes a column 110, a rotating shaft 120, and a water inlet pipe 130. The column 110 has a water storage chamber inside. The water inlet pipe 130 is connected to the bottom end of the column 110. The rotating shaft 120 is connected to the top end of the column 110 and has multiple water inlet holes spaced apart along its circumference. Both ends of the rotating shaft 120 extend out of the column 110. Two connecting pipes 310 are respectively connected to both ends of the rotating shaft 120 and are internally connected.

[0038] It should be noted that the column 110 is used to support the pipe mechanism 30 to a sufficient height and is connected to the cooling water. The rotating shaft 120 passes through the top of the column 110 and has a water inlet hole in the circumference. No matter how the connecting pipe 310 rotates, the water inlet hole can always be connected to the water storage chamber. The rotating shaft 120 connects the connecting pipes 310 on both sides, which can ensure the synchronous rotation of the pipe mechanism 30 on both sides, avoid uneven lateral cooling of the slab caused by asynchronous swing on both sides, and further improve the stability of product quality.

[0039] This application also provides a swing laminar flow cooling system, including a plurality of swing laminar flow cooling devices as described above, wherein the plurality of swing laminar flow cooling devices are arranged at intervals along the longitudinal direction.

[0040] Understandably, the longitudinal spacing of multiple devices can cover the entire length of the slab, meeting the continuous cooling requirements of long slabs.

[0041] Preferably, the pipe units 320 of two adjacent oscillating laminar flow cooling devices oscillate in opposite directions; here, "opposite" means that when one oscillating laminar flow cooling device initially starts to oscillate downward, the adjacent oscillating laminar flow cooling device initially starts to oscillate upward, achieving opposite oscillation paths. In this way, when adjacent devices oscillate in opposite directions, their water spray trajectory can form a "cross-shaped mesh". Different steel grades or different batches of products can form differentiated textures by adjusting the number of devices, oscillation direction, or frequency.

[0042] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A swinging laminar cooling device, characterized in that It includes a support mechanism, a drive mechanism, and two pipe mechanisms arranged longitudinally opposite to each other on both sides of the support mechanism; wherein, The support mechanism has a water storage chamber inside, and the bottom of the support mechanism has a water inlet for connecting to an external water source. Each of the aforementioned piping structures includes a transfer pipe and a piping unit. Each piping unit includes two water collection pipes and multiple water spray pipes arranged at lateral intervals. The water collection pipes are connected to the transfer pipes, and one end of each water spray pipe is connected to the water collection pipe, with the spray end of the water spray pipe facing downwards. The transfer pipe extends longitudinally and is rotatably connected to the top side wall of the support mechanism. The interior of the transfer pipe is connected to the water storage chamber of the support mechanism. The drive mechanism is connected to the support mechanism. The drive end of the drive mechanism is connected to the two transfer pipes respectively through a connector to drive the two transfer pipes to rotate, thereby causing the pipe unit to swing up and down, so that the cooling water flow is transformed into a dynamic wave trajectory. Each of the pipe units further includes a diaphragm, an end plate, and two fixing brackets. The diaphragm is connected between the two water collection pipes. The end plate is connected to the end of the water collection pipe and the diaphragm. Each water collection pipe is connected to a fixing bracket on the side away from the diaphragm. The fixing bracket has multiple fixing holes arranged laterally at intervals. The spray pipe is bent. The spray end of the spray pipe extends to the fixing bracket of the adjacent water collection pipe and passes through the fixing hole with the opening facing downward. The spray pipes between the two water collection pipes are arranged alternately laterally. The angle between the pipe unit and the horizontal plane swings within the range of 0° to 4°. Each of the pipe structures comprises two pipe units, which are arranged at a longitudinal interval. The two adjacent pipe units swing in opposite directions; here, "opposite" means that when one pipe unit initially starts swinging downwards, the adjacent pipe unit initially starts swinging upwards, achieving opposite swing paths. Thus, when adjacent pipe units swing in opposite directions, their water spray trajectories form a crisscrossing network.

2. The oscillating laminar cooling device according to claim 1, characterized in that The connector includes a pin, a lug, and two longitudinally opposite connecting beams. The first end of the connecting beam is connected to the adapter pipe and is located near the drive mechanism. The pin is connected between the second ends of the two connecting beams and rotatably passes through the lug. The lug is connected to the drive end of the drive mechanism.

3. The oscillating laminar cooling device according to claim 2, characterized in that The driving mechanism is a hydraulic cylinder, which is hinged to the support mechanism. The lifting lug is connected to the telescopic end of the hydraulic cylinder, which is extendable vertically.

4. The oscillating laminar cooling device according to claim 3, characterized in that It also includes counterweights, with one counterweight connected to each of the adapter pipes.

5. The oscillating laminar cooling device according to claim 4, characterized in that The support mechanism includes a column, a rotating shaft, and a water inlet pipe. The column has a water storage chamber inside. The water inlet pipe is connected to the bottom end of the column. The rotating shaft is connected to the top end of the column and has multiple water inlet holes spaced apart along its circumference. Both ends of the rotating shaft extend out of the column. Two connecting pipes are respectively connected to the two ends of the rotating shaft and are internally connected.

6. An oscillating laminar cooling system characterized in that, It includes a plurality of oscillating laminar flow cooling devices as described in any one of claims 1-5, wherein the plurality of oscillating laminar flow cooling devices are arranged at intervals along the longitudinal direction.

7. The oscillating laminar cooling system of claim 6, wherein, The pipe units of two adjacent oscillating laminar flow cooling devices oscillate in opposite directions.

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