Laminar flow cooling header

Abstract

The utility model discloses a laminar cooling header, and belongs to the technical field of hot continuous rolling strip steel cooling. The header comprises a water distribution pipe, a pipe base welded to the side face of the water distribution pipe, a water spraying pipe installed in a stepped through hole of the pipe base, and a cross-shaped flow guide plate fixed in a cross-shaped groove in the water inlet end of the water spraying pipe. When cooling water flows into the water spraying pipe through the pipe base, the cross-shaped flow guide plate decomposes inlet vortexes through the symmetrical fins of the cross-shaped flow guide plate, water flow is guided to form a stable laminar flow state, and finally the water flow is sprayed out in a linear water column mode and perpendicularly impacts the lower surface of strip steel. According to the scheme, the structural strength is enhanced through the stepped pipe base, the flow guide stability is ensured through the embedded design of the cross-shaped flow guide plate and the water spraying pipe, the problems of low cooling efficiency, uneven strip steel surface quality and the like caused by flow field disorder in the prior art are effectively solved, water flow pulsation is restrained through the collaborative design of the flow guide plate and the pipe base, and the service life of parts is prolonged; the modular structure adapts to different working condition requirements, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of cooling devices and relates to a laminar flow cooling manifold. Background Technology

[0002] Laminar flow cooling devices, as key equipment in hot strip rolling production lines, aim to achieve rapid and efficient temperature control by uniformly spraying cooling water onto the surface of high-temperature strip steel. In existing technologies, the lower cooling manifold is typically located in a narrow space between transport rollers. Due to installation constraints, the design diameter of the water distribution pipe is often small, resulting in insufficient stability of the cooling water flow field within the pipe. Especially during the process of cooling water entering the spray pipe from the distribution pipe, the lack of an effective guiding structure at the inlet easily leads to vortex phenomena. The generation of vortices not only disrupts the water flow direction within the spray pipe but also causes the cooling water column to exhibit an irregular diffusion state after being sprayed out. When such non-uniform water flow impacts the strip steel surface, its flow direction and impact force are difficult to control precisely, which not only weakens cooling efficiency but may also cause surface quality defects in the strip steel due to uneven local cooling, such as residual oxide film or uneven microstructure.

[0003] To address these issues, existing technologies have attempted to improve water flow stability by optimizing the structure of the water distribution pipe or adjusting the layout of the spray pipes. However, due to space constraints, such improvements often fail to balance flow field optimization with structural compactness. For example, some solutions increase the diameter of the water distribution pipe to reduce flow velocity fluctuations, but this further occupies the roller conveyor gap, affecting the overall rationality of the equipment layout. Other solutions attempt to install simple guide vanes inside the spray pipes, but due to the limited shape or improper installation of the guide vanes, the actual guiding effect is limited, failing to effectively suppress eddies or achieve directional guidance of the water flow. Therefore, how to achieve efficient control of the cooling water flow within a limited space remains a critical challenge that needs to be overcome in existing laminar flow cooling technologies. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide an innovative improvement scheme for laminar flow cooling manifold structure. By introducing a specially designed cross-shaped guide plate and combining it with the coordinated installation of stepped pipe seat and water spray pipe, this scheme achieves precise control of cooling water flow without significantly changing the overall size of the manifold.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A laminar flow cooling manifold includes a water distribution pipe, a pipe seat, a water spray pipe, and a cross-shaped guide plate;

[0007] The pipe seat is fixedly connected to the side of the water distribution pipe, and a stepped through hole is provided on the pipe seat, which communicates with the inner wall of the water distribution pipe.

[0008] The water spray pipe is installed in the stepped through hole of the pipe seat;

[0009] When cooling water flows into the spray pipe through the water distribution pipe, the cross-shaped guide plate suppresses eddies and sprays the cooling water out in a laminar flow state.

[0010] Optionally, the inlet of the water spray pipe is provided with a symmetrically shaped guide plate.

[0011] Optionally, the shape of the guide plate can be cross-shaped, straight, or other.

[0012] Optionally, the water inlet end of the spray pipe is provided with a cross groove, and the tail of the cross guide plate is embedded in the cross groove.

[0013] Optionally, the head of the cross-shaped guide vane is chamfered.

[0014] Optionally, the head of the guide plate protrudes to engage with the cross groove of the water spray pipe for fixation.

[0015] Optionally, the tail end of the cross-shaped guide plate is chamfered to fit the cross-groove structure of the water spray pipe.

[0016] Optionally, the water outlet of the spray pipe is arranged facing upwards to spray cooling water onto the lower surface of the strip.

[0017] The beneficial effects of this utility model are as follows:

[0018] This solution achieves multiple technological breakthroughs in areas such as flow guiding components, installation methods, and flow field control through optimized structural design of laminar flow cooling manifolds. Specific beneficial effects are reflected in the following aspects:

[0019] 1. Significantly improved cooling efficiency

[0020] The core innovation of this design lies in adding a cross-shaped guide vane at the inlet of the spray pipe. In traditional structures, when cooling water enters the spray pipe from the distribution pipe, the abrupt change in inlet cross-sectional area and the turning point in the flow direction easily create vortices, leading to turbulent water flow and increased energy dissipation. In this design, the cross-shaped guide vane, through its four symmetrically distributed guide vanes, divides the water flow into four uniform branches, effectively decomposing the disordered kinetic energy of the inlet vortex. The geometry of the guide vanes further guides the water flow to transition smoothly along the spray pipe axis, allowing the cooling water to form a stable laminar flow state before being sprayed out. This laminar flow impacts the strip steel surface in an almost straight line, increasing the effective contact area between the cooling water and the strip steel while avoiding energy loss caused by water flow diffusion.

[0021] 2. Enhanced flow field stability and controllability

[0022] The design of the cross-shaped guide plate and the cross-shaped groove inside the spray pipe not only achieves precise positioning of the guide plate, but also ensures that the guide plate does not shift or vibrate under the impact of high-speed water flow through the chamfered tail and the interlocking structure of the groove. Furthermore, the pipe seat adopts a stepped through-hole design, with its inner wall forming a multi-level sealing surface with the outer wall of the spray pipe. Combined with welding or bonding fixing methods, this further enhances the compressive strength and sealing performance of the spray pipe. This double-stabilized structure effectively suppresses the mechanical impact of water flow pulsation on the spray pipe, avoiding connection loosening or leakage problems caused by long-term use, thus maintaining long-term flow field stability. A stable flow field makes the flow direction and impact force of the cooling water impacting the strip steel more controllable, helping to reduce quality defects such as residual oxide film and uneven microstructure on the strip steel surface, and improving the finished product qualification rate.

[0023] 3. Optimization of structural compactness and adaptability

[0024] Traditional improvement solutions, such as increasing the diameter of the water distribution pipe or adding complex flow guiding devices, often lead to an expansion of the manifold volume, making it difficult to adapt to the narrow space between transport rollers. This solution, through an innovative stepped pipe seat design, locally increases the wall thickness on the side of the water distribution pipe, strengthening the mechanical strength of the spray pipe installation area while avoiding a significant increase in overall structural dimensions. The integrated embedding design of the spray pipe and the guide plate further saves internal space. Furthermore, the symmetrical shape of the guide plate can be flexibly replaced according to actual working conditions, enhancing the adaptability of the device. For example, in scenarios requiring higher flow guiding accuracy, a multi-bladed cross guide plate can be used; while in extreme conditions with limited space, a simpler single-line guide plate can be used. This modular design allows this solution to adapt to different rolling speeds, strip thicknesses, and cooling intensity requirements, expanding its application range.

[0025] 4. Reduced maintenance costs and energy consumption

[0026] Because the guide vane effectively suppresses eddies, the energy loss of cooling water during the spraying process is significantly reduced, allowing for a decrease in the power requirement of the water supply pump while maintaining the same cooling effect, thus achieving energy conservation and consumption reduction. Furthermore, the robust connection design between the spray pipe and its base reduces component wear caused by vibration, and the standardized modular structure of the guide vane facilitates quick replacement, reducing maintenance difficulty and downtime.

[0027] 5. Process compatibility and industrialization potential

[0028] The structural improvements in this solution do not require large-scale modifications to the existing production line layout. Upgrades can be achieved simply by welding pipe seats to the side of the water distribution pipe and replacing the spray pipe assembly, offering extremely high process compatibility. Its core components can be manufactured using conventional machining or casting processes, keeping production costs under control and making it suitable for large-scale industrial applications.

[0029] In summary, this solution achieves technological breakthroughs in improving cooling efficiency, enhancing stability, and reducing operation and maintenance costs through the synergistic effect of structural innovation and flow field optimization, providing a practical solution for upgrading hot continuous rolling laminar flow cooling technology.

[0030] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0032] Figure 1 This is the main view of this solution;

[0033] Figure 2 This is a sectional view of the scheme.

[0034] Attached reference numerals: 1. Water distribution pipe, 2. Pipe seat, 3. Water spray pipe, 4. Cross guide plate, 5. Strip steel, 6. Roller conveyor. Detailed Implementation

[0035] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0036] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0037] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0038] Please see Figures 1-2 The specific implementation of one type of laminar flow cooling manifold in this scheme is as follows:

[0039] The laminar flow cooling manifold is installed between two roller conveyors 6 and is used to spray water to cool the lower surface of the high-temperature strip steel 5. The water distribution pipe 1 extends along the gap between the roller conveyors 6, forming a cooling water flow channel inside. A pipe seat 2 is welded to the side of the water distribution pipe 1; the pipe seat 2 is a locally thickened structure used to enhance the mechanical strength of the area where the water spray pipe 3 is installed. A stepped through hole is provided on the pipe seat 2, which communicates with the inner wall of the water distribution pipe 1 to allow cooling water to flow from the water distribution pipe 1 into the water spray pipe 3.

[0040] The inlet end of the water spray pipe 3 is machined with a cross groove for fixing the cross guide plate 4. The tail of the cross guide plate 4 is embedded in the cross groove of the water spray pipe 3, and its head is designed with a raised structure and chamfered to ensure a tight fit between the guide plate and the groove. The outlet end of the water spray pipe 3 is set upward and is installed to the side wall of the water distribution pipe 1 through the stepped through hole of the pipe seat 2. The water spray pipe 3 and the pipe seat 2 are fixed by welding or bonding to form a stable connection.

[0041] As cooling water flows from the inner wall of the distribution pipe 1 through the stepped through-hole of the pipe seat 2 into the spray pipe 3, the four symmetrical vanes of the cross-shaped guide plate 4 evenly divide the water flow into four branches, effectively suppressing the vortex generated by the abrupt change in flow path at the inlet. The chamfered design at the tail of the guide plate further guides the water flow to transition smoothly along the axis of the spray pipe 3, allowing the cooling water to form a stable laminar flow state before being sprayed out. Finally, the cooling water is sprayed out from the outlet end of the spray pipe 3 in an almost straight laminar column shape, vertically impacting the lower surface of the strip steel 5, achieving efficient and uniform cooling of the strip steel.

[0042] The strip steel 5 continuously passes through the cooling zone under the conveyor belt 6, and the laminar water jets sprayed from the water spray pipe 3 continuously cover its lower surface, rapidly reducing the strip steel temperature. The symmetrical structure of the cross-shaped guide plate 4 and the reinforced design of the stepped pipe seat 2 ensure that the water spray pipe 3 remains stable under the impact of high-speed water flow, avoiding displacement or leakage caused by vibration. In addition, the replaceable design of the guide plate 4 allows for the selection of different shapes (such as cross-shaped or straight-lined) according to actual working conditions, further improving the adaptability of the device.

[0043] This embodiment achieves efficient control of cooling water flow within a limited space by optimizing the flow guide structure and installation method, significantly improving the uniformity and stability of laminar cooling.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A laminar flow cooling manifold, characterized in that, It includes a water distribution pipe (1), a pipe seat (2), a water spray pipe (3), and a cross-shaped guide plate (4); The pipe seat (2) is fixedly connected to the side of the water distribution pipe (1). The pipe seat (2) has a stepped through hole, which is connected to the inner wall of the water distribution pipe (1). The water spray pipe (3) is installed in the stepped through hole of the pipe seat (2); When cooling water flows into the spray pipe (3) through the water distribution pipe (1), the cross guide plate (4) suppresses the eddy current and sprays the cooling water in a laminar flow state.

2. The laminar cooling header of claim 1, wherein, The inlet of the water spray pipe (3) is provided with a symmetrically shaped guide plate.

3. The laminar cooling collective according to claim 2, characterized in that The shape of the guide plate can be cross-shaped, straight, or other.

4. The laminar cooling collective of claim 1, wherein, The water inlet end of the spray pipe (3) is provided with a cross groove, and the tail of the cross guide plate (4) is embedded in the cross groove.

5. The laminar cooling collective of claim 1, wherein, The head of the cross-shaped guide plate (4) is chamfered.

6. The laminar cooling collective of claim 4, wherein, The guide plate has a raised head for engaging and fixing with the cross groove of the water spray pipe (3).

7. The laminar cooling collective header of claim 4, wherein, The tail end of the cross guide plate (4) is chamfered to fit the cross groove structure of the water spray pipe (3).

8. The laminar cooling collective of claim 1, wherein, The water outlet of the spray pipe (3) is set upwards to spray cooling water onto the lower surface of the strip steel (5).

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