A spray cooling device

Abstract

This utility model discloses a spray cooling device, belonging to the field of steel pipe heat treatment technology. It includes a transverse movement mechanism, a rotating support seat on the transverse movement mechanism, a horizontal rotation mechanism connected to the upper part of the rotating support seat, a second drive mechanism on one side of the upper part of the horizontal rotation mechanism, a pitch angle adjustment mechanism connected to the second drive mechanism, and a rotating spray mechanism on the pitch angle adjustment mechanism. The device can synchronously adjust the angle and corresponding position distance to prevent the steel pipe from leaving the spray range during transportation and reduce the formation of undercooled or overcooled zones in the steel pipe during quenching due to fluctuations in distance or spray angle.

Description

Technical Field

[0001] This utility model belongs to the field of steel pipe heat treatment technology, specifically a spray cooling device. Background Technology

[0002] Traditional heat treatment of steel pipes commonly employs an immersion cooling process, where the entire high-temperature steel pipe is immersed in a static cooling bath for quenching. This method, due to the inability of the cooling medium to circulate dynamically, makes it difficult to break down the vapor film on the steel pipe surface, resulting in a significant difference in cooling rates between the inner and outer layers. This is particularly pronounced in large-diameter steel pipes, where the microstructure transformation in the core lags behind the surface layer. This not only generates distorted stress leading to bending deformation but also causes radial delamination of the microstructure due to uneven cooling paths. More seriously, prolonged residence time in the cooling bath accelerates surface oxidation, requiring subsequent processing to remove the oxide scale.

[0003] For example, the invention patent CN118996102A discloses an online heat treatment cooling system and method for hot-rolled steel materials, namely, a directional spray cooling system. This system involves arranging multiple rows of fixed nozzle arrays on both sides of the steel pipe conveying path, and using a high-pressure pump to atomize the cooling medium and spray it directionally onto the steel pipe surface. This method utilizes high-speed mist to break through the vapor film layer, significantly accelerating the heat exchange rate. Simultaneously, the nozzle distribution can be adjusted to control the spray density, creating a gradient cooling environment on the steel pipe surface. Compared to immersion cooling, spray cooling shortens the cooling time and reduces oxidation losses.

[0004] However, while the directional spray system in this device improves cooling efficiency, the rigid structure of its fixed nozzle installation exposes new problems when dealing with non-ideal working conditions. When handling slender steel pipes with flexural deformation, the distance between the nozzle and the surface of the steel pipe fluctuates with the curvature, and some areas form undercooled zones due to exceeding the effective range. When dealing with irregularly shaped steel pipes such as elliptical cross-sections or tapered pipes, the fixed-angle nozzles cannot adjust the spray angle in real time, resulting in overcooling of the protruding parts and insufficient cooling of the concave parts. In addition, during the continuous transport of the steel pipe, the fixed nozzle array cannot follow the slight sway of the steel pipe, and some areas are out of the spray coverage area. The existing structure can only achieve unidirectional position adjustment and cannot adjust the angle and corresponding position distance synchronously. The steel pipe is prone to falling out of the spray range during transport, which can easily lead to the formation of undercooled or overcooled zones in the steel pipe during quenching due to fluctuations in distance or spray angle. Utility Model Content

[0005] The purpose of this invention is to provide a spray cooling device to solve at least one aspect of the problems and defects mentioned in the background art.

[0006] A spray cooling device is provided, including a traversing mechanism, a rotating support base is provided on the traversing mechanism, a horizontal rotating mechanism is connected to the upper part of the rotating support base, a second driving mechanism is provided on one side of the upper part of the horizontal rotating mechanism, the second driving mechanism is connected to a pitch angle adjustment mechanism, and a rotating spray mechanism is provided on the pitch angle adjustment mechanism.

[0007] Furthermore, the transverse mechanism includes a fixed plate, a sliding frame is provided on the fixed plate, a lead screw is rotatably connected inside the sliding frame, a ball nut is threaded onto the lead screw, a movable seat is fixedly connected to the ball nut, a rotary support seat is provided on the movable seat, a drive motor is provided on one side of the sliding frame, and a lead screw is fixedly connected to the output end of the drive motor.

[0008] Furthermore, slide rails are provided on both sides of the sliding frame, and sliding clips are slidably connected to both slide rails, with the two sliding clips fixedly connected to both sides of the movable seat.

[0009] Furthermore, sliding rods are provided on both sides inside the sliding frame, and the sliding rods slide in cooperation with the moving seat.

[0010] Furthermore, the horizontal rotation mechanism includes a third motor, which is mounted on a rotating support base. The output end of the third motor is fixedly connected to the rotating support base, and a second drive mechanism is fixedly connected to one side of the third motor via a connecting plate.

[0011] Furthermore, the second drive mechanism includes a second motor, which is mounted on the connecting plate. The second motor is connected to the connecting arm body via a bevel gear set inside the support arm. The connecting arm body is equipped with a pitch angle adjustment mechanism.

[0012] Furthermore, the pitch angle adjustment mechanism includes a plunger cylinder body, the connecting arm body is provided with the plunger cylinder body, the plunger cylinder body is movably connected to the plunger rod, and the plunger rod is fixedly connected to the rotary spray mechanism.

[0013] Furthermore, a hydraulic cylinder is provided between the support arm and the plunger cylinder body, and the telescopic end of the hydraulic cylinder body is fixedly connected to the plunger cylinder body.

[0014] Furthermore, the rotary spray mechanism includes a first motor, which is mounted on a plunger rod. The output end of the first motor is connected to a support rod via a bevel gear set. Diagonal braces are provided on both sides above the support rod, and several rotary nozzles are fixedly connected to the two diagonal braces.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] The lateral movement mechanism is synchronously controlled with the steel pipe conveying system to adjust the lateral position of the rotating spray mechanism in real time. The control system adjusts the position of the rotating spray mechanism according to the movement of the steel pipe, and the lateral movement mechanism dynamically adjusts the position of the spray mechanism according to the conveying position of the steel pipe, so that the rotating spray mechanism always acts directly above the conveyed steel pipe without deviation. The spray mechanism follows the steel pipe for synchronous conveying, and the displacement control system ensures that its linear velocity is consistent with the conveying speed of the steel pipe, achieving synchronous movement and eliminating the phenomenon of local overcooling or undercooling caused by the fixed spray device, thereby ensuring the overall uniformity and stability of the spray cooling effect.

[0017] The horizontal rotation mechanism can rotate the entire rotating support base, thereby aligning the rotation axis of the rotating spray mechanism with the center of the steel pipe in real time, solving the problem of cooling axis misalignment caused by steel pipe bending deformation;

[0018] The second drive mechanism can drive the pitch angle adjustment mechanism, causing the rotary spray mechanism to adjust its pitch angle around its fulcrum. This allows the rotary spray mechanism to adaptively adjust its spray angle according to the up-and-down movement or bending deformation of the steel pipe during transportation, ensuring that the rotary spray mechanism always covers the upper surface area of ​​the steel pipe to be quenched. When the angle and spray distance are adjusted, the rotary spray mechanism starts to rotate, forming a stable annular spray field. While the spray mechanism moves horizontally synchronously with the steel pipe, it covers and cools the upper surface area to be quenched. It can synchronously adjust the angle and corresponding position distance to prevent the steel pipe from easily leaving the spray range during transportation and reduce the formation of undercooled or overcooled zones in the steel pipe during quenching due to fluctuations in distance or spray angle. Attached Figure Description

[0019] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of a spray cooling device;

[0021] Figure 2 A schematic diagram of the support assembly structure provided by this utility model;

[0022] Figure 3 for Figure 3 Enlarged schematic diagram of the structure of region A in the middle;

[0023] Figure 4 A schematic diagram of the horizontal rotation mechanism provided by this utility model.

[0024] In the diagram: 1. Transverse movement mechanism; 101. Fixed plate; 102. Sliding frame; 103. Lead screw; 104. Ball nut; 105. Moving seat; 106. Drive motor; 107. Slide rail; 108. Sliding clamp; 109. Sliding rod; 2. Rotary support seat;

[0025] 3. Horizontal rotation mechanism; 31. Third motor; 32. Connecting plate;

[0026] 4. Second drive mechanism; 41. Second motor; 42. Support arm; 43. Connecting arm body;

[0027] 5. Pitch angle adjustment mechanism; 51. Piston cylinder body; 52. Piston rod;

[0028] 6. Rotary spraying mechanism; 61. First motor; 62. Support rod; 63. Diagonal brace plate; 64. Rotary nozzle;

[0029] 7. Hydraulic cylinder body. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided 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.

[0036] Please see Figures 1-4 As shown in the embodiment of this utility model, a spray cooling device includes a transverse mechanism 1. The transverse mechanism 1 is located at the bottom of the device, supports the entire cooling system, and is movable in the direction of steel pipe conveying. Through the transverse mechanism 1, the rotating spray mechanism 6 is synchronously followed along the length of the steel pipe, so that the rotating spray mechanism 6 always acts directly above the conveyed steel pipe without deviation. A rotating support seat 2 is provided on the transverse mechanism 1, and a horizontal rotating mechanism 3 is connected to the upper part of the rotating support seat 2. The horizontal rotating mechanism 3 drives the rotating support seat 2 to rotate horizontally around the vertical axis, which can dynamically align with the central axis of the steel pipe, effectively cope with the deformation state of the steel pipe such as bending and deviation, and make the spray always perpendicular to the surface, thus improving the cooling uniformity.

[0037] The rotating support 2 is mounted on the transverse mechanism 1 to carry and support the upper horizontal rotating mechanism 3 and the rotating spraying mechanism 6, ensuring that the rotating spraying mechanism 6 can rotate around the steel pipe and providing an adjustable attitude foundation;

[0038] The second drive mechanism 4 provides power input to the piston cylinder 51 supporting the pitch angle adjustment mechanism 5, and adjusts the pitch angle of the rotary spray mechanism 6. It can flexibly adjust the spray direction angle according to the change of the steel pipe surface position, and adjust the cooling coverage. The pitch angle adjustment mechanism 5 controls the rotary spray mechanism 6 to change the angle around the horizontal direction, realize the pitch movement of the rotary spray mechanism 6, and adapt to different cross sections, curvatures and postures of the steel pipe by adjusting the spray tilt angle, improve the matching degree between the cooling spray and the steel pipe surface, and enhance the cooling uniformity of the curved parts.

[0039] During operation, the steel pipe moves at a constant speed to the spray cooling area via the conveyor line; the lateral movement mechanism 1 moves along with the steel pipe, achieving synchronous advancement of the rotating spray mechanism 6 and the steel pipe; the horizontal rotation mechanism 3 senses the center offset of the steel pipe in real time and adjusts the posture of the rotating support 2 to keep the axis of the rotating spray mechanism 6 aligned with the center of the steel pipe; the second drive mechanism 4 can drive the pitch angle adjustment mechanism 5 to adjust the pitch angle of the rotating spray mechanism 6 around its fulcrum, thereby adaptively adjusting the spray angle of the rotating spray mechanism 6 according to the up-and-down movement or bending deformation of the steel pipe during the conveying process, ensuring that the rotating spray mechanism 6 always covers the upper surface area of ​​the conveyed steel pipe to be quenched. When the angle and spray distance are ready, the rotating spray mechanism 6 starts to rotate, forming a stable annular spray field; while the spray mechanism moves laterally synchronously with the steel pipe, it covers and cools the upper surface area of ​​the conveyed steel pipe to be quenched, and can synchronously adjust the angle and corresponding position distance to prevent the steel pipe from leaving the spray range during the conveying process, reducing the phenomenon of undercooled or overcooled zones forming in the steel pipe during the quenching process due to fluctuations in distance or spray angle.

[0040] In one embodiment, see Figure 1 , Figure 2 and Figure 3 As shown, the lateral movement mechanism 1 includes a fixed plate 101, a sliding frame 102 on the fixed plate 101, a lead screw 103 rotatably connected inside the sliding frame 102, a ball nut 104 threadedly connected to the lead screw 103, a movable seat 105 fixedly connected to the ball nut 104, a rotating support seat 2 on the movable seat 105, a drive motor 106 on one side of the sliding frame 102, and the lead screw 103 fixedly connected to the output end of the drive motor 106. When the drive motor 106 receives a control signal, it starts to rotate, driving the lead screw 103 to rotate. The lead screw 103 drives the ball nut 104 to move axially, thereby causing the movable seat 105 and the upper rotating spray mechanism 6 to move laterally. The current position is monitored in real time by a built-in position encoder or displacement sensor, forming a closed-loop control. The rotating spray mechanism 6 always acts directly above the conveyed steel pipe without deviation.

[0041] In one embodiment, see Figure 1 , Figure 2 and Figure 3 As shown, slide rails 107 are also provided on both sides of the sliding frame 102. Sliding clamps 108 are slidably connected to both slide rails 107. The two sliding clamps 108 are fixedly connected to both sides of the movable seat 105. When the drive motor 106 drives the lead screw 103 to rotate, the ball nut 104 drives the movable seat 105 to slide to one side. At the same time, the sliding clamps 108 can constrain the movable seat 105 to cooperate with the slide rails 107 to ensure that the movable seat 105 always maintains its posture balance and will not deflect.

[0042] In one embodiment, seeFigure 1 , Figure 2 and Figure 3 As shown, sliding rods 109 are provided on both sides inside the sliding frame 102. The sliding rods 109 slide in cooperation with the moving seat 105. The two sliding rods 109 are arranged along the length of the sliding frame 102 and slide in cooperation with the moving seat 105, playing a guiding and supporting role. During the process of the ball nut 104 driving the moving seat 105 to move along the lead screw 103, the sliding rods 109 provide a smooth guide for the moving seat 105, preventing it from swaying or tilting during operation, thereby ensuring the positional accuracy and motion stability of the entire rotary spray mechanism 6 during the lateral movement process, and improving the reliability and response speed of the cooling control system.

[0043] In one embodiment, see Figure 1 and Figure 4 As shown, the horizontal rotation mechanism 3 includes a third motor 31, which is mounted on the rotating support 2. The output end of the third motor 31 is fixedly connected to the rotating support 2. A second drive mechanism 4 is fixedly connected to one side of the third motor 31 through a connecting plate 32. The third motor 31 outputs rotational motion, driving the rotating support 2 to rotate around the vertical axis. The rotating spray mechanism 6 is located on the rotating support 2, thus gaining horizontal adjustment capability. The spray direction of the rotating spray mechanism 6 can be adjusted in real time to ensure that it is always aligned with the center of the steel pipe, which is suitable for situations where the steel pipe is eccentric or slightly bent.

[0044] In one embodiment, see Figure 1 and Figure 4 As shown, the second drive mechanism 4 includes a second motor 41, which is mounted on the connecting plate 32. The second motor 41 is connected to the connecting arm 43 via a bevel gear set (composed of a driving bevel gear and a driven bevel gear) inside the support arm 42. The connecting arm 43 is equipped with a pitch angle adjustment mechanism 5. The second motor 41 starts the output shaft to drive the driving bevel gear inside the support arm 42 to rotate. The driving bevel gear meshes with the driven bevel gear that meshes perpendicularly with it, causing its output rotation direction to change by 90°. The driven bevel gear drives the connecting arm 43 to swing up and down around its mounting axis, thereby adjusting the pitch angle of the rotating spray mechanism 6. This, in turn, adjusts the spray angle of the rotating spray mechanism 6 fixedly connected to the entire pitch angle adjustment mechanism 5, ensuring that the rotating spray mechanism 6 always covers the upper surface area of ​​the steel pipe to be quenched.

[0045] In one embodiment, see Figure 1 and Figure 4As shown, the pitch angle adjustment mechanism 5 includes a plunger cylinder 51, which is mounted on the connecting arm 43. A plunger rod 52 is movably connected to the plunger cylinder 51, and a rotary spray mechanism 6 is fixedly connected to the plunger rod 52. When the second motor 41 starts, it drives the bevel gear set to rotate the connecting arm 43, thereby adjusting the spray angle of the rotary spray mechanism 6. The plunger cylinder 51 is a hydraulic plunger structure, and the plunger rod 52 inside can precisely extend and retract along the axial direction under hydraulic action. The rotary spray mechanism 6 mounted on the plunger rod 52 extends or retracts accordingly, thereby realizing the dynamic adjustment of the lateral distance (spray distance) between the spray mechanism and the steel pipe, ensuring that the spray effect always uniformly covers the surface of the steel pipe, and significantly improving the cooling consistency during the quenching process.

[0046] In one embodiment, see Figure 1 and Figure 4 As shown, a hydraulic cylinder 7 is also provided between the support arm 42 and the plunger cylinder 51. The telescopic end of the hydraulic cylinder 7 is fixedly connected to the plunger cylinder 51. The hydraulic cylinder 7 is responsible for fine-tuning the pitch angle. The hydraulic cylinder 7 changes the angle between itself and the plunger cylinder 51 through the telescopic movement of the piston rod, causing the plunger cylinder 51 to rotate on the support arm 42 through the connecting arm 43. The hydraulic cylinder 7 changes the angle between itself and the plunger cylinder 51 through the small-range telescopic movement of the piston rod, thereby driving the plunger cylinder 51 to rotate at a small angle on the support arm 42 with the bearing fulcrum as the center. The pitch swing of the plunger cylinder 51 changes the spatial angle between the rotating spray mechanism 6 and the steel pipe to be transported, realizing another adjustment and compensation of the spray direction and spray area of ​​the rotating spray mechanism 6, and preventing the steel pipe from leaving the spray range during the transport process.

[0047] In one embodiment, see Figure 1 and Figure 4As shown, the rotary spray mechanism 6 includes a first motor 61, which is mounted on the plunger rod 52. The output end of the first motor 61 is connected to a support rod 62 via a bevel gear set (composed of a driving bevel gear and a driven bevel gear). The output end of the first motor 61 is fixedly connected to the driving bevel gear, which meshes with the driven bevel gear. The driven bevel gear is fixedly connected to the support rod 62. Two inclined support plates 63 are provided on the upper sides of the support rod 62. Several rotary nozzles 64 are fixedly connected to the two inclined support plates 63. The first motor 61 is mounted on the plunger rod 52, and its output shaft converts the power direction through the built-in bevel gear set, driving the support rod 62 to rotate along its axis. 2. Two inclined support plates 63 are fixedly connected to both sides. Several rotating nozzles 64 are installed on each of the inclined support plates 63. The rotating spray mechanism 6 is driven by a first motor 61. The first motor 61 drives the active bevel gear to rotate, which in turn drives the driven bevel gear to rotate, changing the power direction from horizontal to vertical. This drives the support rod 62 to rotate along the axis. As the support rod 62 rotates as a whole, it drives the several rotating nozzles 64 on the inclined support plates 63 to rotate, forming a stable annular spray field. This covers and cools the upper surface area of ​​the steel pipe to be quenched during transportation, preventing the steel pipe from leaving the spray range during transportation and reducing the formation of undercooled or overcooled zones in the steel pipe during quenching due to fluctuations in distance or spray angle.

[0048] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A spray cooling device, comprising a transverse mechanism (1), characterized in that, The transverse mechanism (1) is provided with a rotating support base (2), and the upper part of the rotating support base (2) is connected to a horizontal rotating mechanism (3). A second driving mechanism (4) is provided on one side of the upper part of the horizontal rotating mechanism (3). The second driving mechanism (4) is connected to a pitch angle adjustment mechanism (5), and a rotating spray mechanism (6) is provided on the pitch angle adjustment mechanism (5).

2. The spray cooling device according to claim 1, characterized in that, The transverse mechanism (1) includes a fixed plate (101), a sliding frame (102) is provided on the fixed plate (101), a lead screw (103) is rotatably connected inside the sliding frame (102), a ball nut (104) is threaded on the lead screw (103), a movable seat (105) is fixedly connected on the ball nut (104), a rotating support seat (2) is provided on the movable seat (105), a drive motor (106) is provided on one side of the sliding frame (102), and the lead screw (103) is fixedly connected to the output end of the drive motor (106).

3. The spray cooling device according to claim 2, characterized in that, The sliding frame (102) is also provided with slide rails (107) on both sides, and slide clips (108) are slidably connected on both slide rails (107). The two slide clips (108) are fixedly connected to both sides of the movable seat (105).

4. A spray cooling device according to claim 2, characterized in that, The sliding frame (102) has sliding rods (109) on both sides inside, and the sliding rods (109) slide in cooperation with the moving seat (105).

5. A spray cooling device according to claim 1, characterized in that, The horizontal rotation mechanism (3) includes a third motor (31), which is mounted on a rotating support (2). The output end of the third motor (31) is fixedly connected to the rotating support (2), and a second drive mechanism (4) is fixedly connected to one side of the third motor (31) via a connecting plate (32).

6. A spray cooling device according to claim 5, characterized in that, The second drive mechanism (4) includes a second motor (41), which is mounted on a connecting plate (32). The second motor (41) is connected to a connecting arm body (43) via a bevel gear set in the support arm (42). The connecting arm body (43) is equipped with a pitch angle adjustment mechanism (5).

7. A spray cooling device according to claim 6, characterized in that, The pitch angle adjustment mechanism (5) includes a plunger cylinder (51), which is mounted on the connecting arm (43). A plunger rod (52) is movably connected to the plunger cylinder (51), and a rotary spray mechanism (6) is fixedly connected to the plunger rod (52).

8. A spray cooling device according to claim 7, characterized in that, A hydraulic cylinder (7) is also provided between the support arm (42) and the plunger cylinder (51), and the telescopic end of the hydraulic cylinder (7) is fixedly connected to the plunger cylinder (51).

9. A spray cooling device according to claim 1, characterized in that, The rotary spraying mechanism (6) includes a first motor (61), which is mounted on a plunger rod (52). The output end of the first motor (61) is connected to a support rod (62) via a bevel gear set. Inclined bracing plates (63) are provided on both sides above the support rod (62), and several rotary nozzles (64) are fixedly connected to the two inclined bracing plates (63).

Images