A sizing sleeve capable of pre-cooling pipe

Abstract

The utility model discloses a sizing sleeve that can precool pipe material, belongs to the technical field of pipeline manufacturing, and it comprises: a sleeve body, a water ring disc and a precooling assembly, the precooling assembly comprises a water supply unit fixedly connected with the water ring disc and a pair of spray heads, one end of the spray head is fixedly connected with the water supply unit, and the other end of the spray head is vertically downwardly arranged, the water supply unit is arranged at the top of the water ring disc, the water supply unit can supply cooling water to the spray head, and two spray heads are symmetrically arranged along the vertical bisector of the water ring disc to form two cooling liquid streams flowing downward along the two sides of the pipe wall on the pipe material to be cooled and sized. The utility model can eliminate the internal stress of the pipe material and improve the surface quality of the pipe material.

Description

Technical Field

[0001] This utility model relates to the field of pipe manufacturing technology, and in particular to a sizing sleeve that can pre-cool pipes. Background Technology

[0002] With social development, pipe products made of polymer materials are increasingly entering people's daily lives. Among them, water supply systems made of high molecular weight polyethylene resin (UHMW-PE) are receiving more and more attention for their quality and safety.

[0003] The existing method of directly using water-cooled spraying for sizing polymer pipes results in excessively rapid cooling of the pipes, leading to excessive internal stress accumulation and seriously interfering with the quality of the pipes. Utility Model Content

[0004] In view of this, it is necessary to provide a sizing sleeve that can pre-cool the pipe to solve the problem that existing sizing sleeves cannot perform preliminary pre-cooling of the pipe.

[0005] This utility model provides a sizing sleeve for pre-cooling pipes, comprising:

[0006] Sleeve;

[0007] A water ring disc is fixedly connected to the end of the sleeve;

[0008] The precooling assembly includes a water supply unit fixedly connected to the water ring plate and a pair of spray heads. One end of each spray head is fixedly connected to the water supply unit, and the other end of each spray head is vertically downward. The water supply unit is located on top of the water ring plate and can supply cooling water to the spray heads. The two spray heads are symmetrically arranged along the vertically divided plane of the water ring plate to form two streams of cooling liquid flowing down the sides of the pipe wall on the pipe to be cooled and sized.

[0009] Furthermore, multiple pairs of spray heads are arranged in an array along the axial direction of the pipe to form multiple streams of cooling liquid that can cover the pipe wall.

[0010] Furthermore, the water delivery unit includes a fixed entity, which is fixedly connected to the water ring disc, and the spray head is detachably connected to the fixed entity.

[0011] Furthermore, the water supply unit also includes a water supply pipeline and a quick connector. The water supply pipeline is disposed in the fixed entity, and the quick connector is disposed on the fixed entity. One end of the water supply pipeline is connected to the quick connector, and the other end of the water supply pipeline forms multiple branch pipes that communicate with the spray head.

[0012] Furthermore, the spray head is threadedly connected to the branch pipe.

[0013] Furthermore, the water supply unit also includes a regulating valve, which is disposed on the water supply pipeline to regulate the water flow rate of the spray head.

[0014] Furthermore, the sleeve is provided with heat dissipation holes, and a plurality of heat dissipation holes are equidistantly arranged around the axis of the sleeve.

[0015] Furthermore, the diameter of the heat dissipation hole gradually decreases along the axial direction of the sleeve.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This utility model discloses a sizing sleeve for precooling pipes, equipped with a precooling component. The precooling component includes a water supply unit connected to a water ring plate and paired spray heads. The water supply unit is located on top of the water ring plate, and one end of each spray head is fixedly connected to the water supply unit, while the other end of the spray head is vertically downward. The spray heads are vertically downward and symmetrically distributed on both sides of the vertically bisecting surface of the water ring plate. Cooling water is supplied to the spray heads through the water supply unit, allowing the coolant to flow evenly down the pipe walls on both sides. As the coolant flows naturally down the pipe walls, heat is gradually carried away, and the cooling rate tends to level off, thereby reducing internal stress concentration. Simultaneously, the coolant flow can repair minor scratches on the pipe surface, improving the surface quality of the pipe. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the precooling component in this utility model;

[0021] Figure 3 This is a schematic diagram of the water supply pipeline in this utility model;

[0022] Figure 4 This is a schematic diagram of the operation of the spray head in this utility model. Figure 1 ;

[0023] Figure 5 This is a schematic diagram of the operation of the spray head in this utility model. Figure 2 ;

[0024] In the picture,

[0025] 100. Sleeve body; 110. Heat dissipation holes; 200. Water ring plate; 300. Precooling component; 310. Water supply unit; 311. Fixed entity; 312. Water supply pipeline; 313. Quick connector; 314. Regulating valve; 320. Spray head; 321. Coolant flow; Detailed Implementation

[0026] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0027] This embodiment describes a sizing sleeve for pre-cooling pipes, which relates to the field of pipe manufacturing technology. By providing a pre-cooling component 300 on the sizing sleeve, the surface of the pipe is cooled by a flow of cooling liquid 321 flowing along the outer wall of the pipe, thereby eliminating internal stress and improving the surface quality of the pipe.

[0028] Please see Figures 1 to 5 This embodiment of a sizing sleeve for pre-cooling pipes includes: a sleeve body 100, a water-cooling plate, and a pre-cooling component 300. A water ring plate 200 is fixedly connected to the end of the sleeve body 100 and is positioned at the input end of the sizing sleeve relative to the pipe, allowing for pre-treatment of the pipe before it enters the sizing sleeve. The pre-cooling component 300 is mounted on the water ring plate 200 and can pre-cool the pipe, eliminating internal stress and surface scratches.

[0029] The precooling assembly 300 includes a water supply unit 310 connected to a water ring plate 200 and paired spray heads 320. The water supply unit 310 is located on top of the water ring plate 200. One end of each spray head 320 is fixedly connected to the water supply unit 310, and the other end of each spray head 320 is vertically downward. The spray heads 320 are arranged vertically downward and symmetrically distributed on both sides of the vertically bisecting surface of the water ring plate 200. Cooling water is supplied to the spray heads 320 through the water supply unit 310, allowing the coolant flow 321 to flow evenly down the pipe walls on both sides. As the coolant flows naturally down the pipe walls, heat is gradually carried away, and the cooling rate tends to be gradual, thereby reducing internal stress concentration. At the same time, the coolant flow 321 can repair minor scratches on the pipe surface and improve the surface quality of the pipe.

[0030] The sleeve 100 is an annular component supporting the overall structure of the sizing sleeve. It can be made of metal and machined into a hollow cylindrical structure, with its inner diameter matching the outer diameter of the pipe. It is used to fix the water ring disc 200 and support the cooling device. The water ring disc 200 is an annular connecting component fixed to the end of the sleeve 100. It can be connected to the sleeve 100 by welding or bolting and is used to support the water supply unit 310 and the spray head 320. The precooling assembly 300 is a coolant supply system consisting of the water supply unit 310 and the spray head 320. The water supply unit 310 can be a fixed block with internal flow channels, connected to a water source via external pipes. The spray head 320 can be a tubular structure with atomizing nozzles. When arranged in pairs, their axis of symmetry coincides with the central plane of the water ring disc 200, ensuring symmetrical liquid flow coverage on both sides.

[0031] During operation, the water supply unit 310 delivers cooling water to the spray head 320. When the spray head 320 sprays vertically downwards, the liquid flow is symmetrically distributed along both sides of the outer wall of the pipe, forming a continuous liquid film. Because the spray heads 320 are symmetrically arranged, both sides of the pipe simultaneously come into contact with coolant at similar temperatures, avoiding the shrinkage differences caused by unilateral cooling. As the liquid flows naturally down the pipe wall, heat is gradually carried away, and the cooling rate tends to level off, thereby reducing internal stress concentration.

[0032] Compared to using spray heads 320 randomly distributed on one side or around the perimeter, which create blind spots in the coolant coverage area and can easily lead to excessively rapid local cooling of the pipe, symmetrically arranging the spray heads 320 allows the coolant to form a uniformly distributed liquid film on both sides of the pipe. This not only improves cooling uniformity but also extends the cooling contact time through the natural downward flow of the liquid, preventing excessive instantaneous temperature differences.

[0033] It should be noted that, for example, when the surface of the extrudate just shows a slight tendency to "string" or "mark", pre-cooling can quickly solidify the surface, reduce the time the material is dragged in the forming sleeve, and thus prevent the scratches from becoming more serious.

[0034] For pipes that become sticky and easily roughened due to high temperatures, pre-cooling can make their surface "harder" before entering the sizing sleeve, reducing friction defects during the shaping process.

[0035] If the flow marks are very shallow or slight lines are caused by die oscillations, pre-cooling can slow down these dynamic fluctuations and may make them less noticeable visually.

[0036] In some embodiments, please refer to Figure 2The paired spray heads 320 refer to two spray heads 320 arranged with the vertical dividing plane of the water ring disk 200 as the axis of symmetry. The vertical dividing plane is vertically set, coincides with the central axis of the water ring disk 200, and equally divides the water ring. The two spray heads 320 can form two streams of cooling liquid 321 that flow symmetrically downward along the pipe wall on the surface of the pipe, thereby achieving uniform cooling of the outer wall of the pipe.

[0037] Multiple pairs of spray heads 320 are arranged in an array along the axial direction of the pipe, indicating that multiple sets of spray heads 320 are repeatedly arranged at certain intervals along the extension direction of the pipe, which can be achieved by linear arrangement. By increasing the coverage density of the coolant flow 321, different areas of the pipe wall can be cooled uniformly.

[0038] As the pipe passes through the sizing sleeve, multiple sets of spray heads 320 sequentially spray cooling water onto the pipe wall surface in the axial direction. Since each set of spray heads 320 is arranged symmetrically, the coolant flow 321 can simultaneously contact the pipe wall from both sides and flow downwards along the surface. The coolant flow 321 formed by the multiple sets of spray heads 320 creates a continuous axial coverage, avoiding excessive local temperature differences caused by a single cooling area, thereby reducing stress concentration inside the pipe.

[0039] In some embodiments, please refer to Figure 2 The water supply unit 310 includes a fixed entity 311, which is a rigid support structure connected to the water ring disk 200. The fixed entity 311 can be made of cast metal or high-strength engineering plastic and is used to support the spray head 320 and maintain its spatial stability. The fixed entity 311 is fixedly welded to the water ring disk 200 or connected by bolts to ensure that the fixed entity 311 and the water ring disk 200 remain fixed at all times.

[0040] The spray head 320 is detachably connected to the fixed body 311. The connection between the spray head 320 and the fixed body 311 is achieved through a separable mechanical interface, which can be achieved by threaded engagement, snap locking or flange docking, to facilitate quick replacement or maintenance of the spray head 320.

[0041] Specifically, the fixed entity 311 is secured to the top of the water ring plate 200 by bolts or welding, and has a water supply channel inside. The spray head 320 is vertically installed at the lower end of the fixed entity 311 via a threaded or snap-fit ​​structure, and cooling water flows into the inner cavity of the spray head 320 from the water supply channel of the fixed entity 311. When it is necessary to adjust the angle of the spray head 320 or replace damaged parts, the spray head 320 can be disassembled separately without disassembling the entire structure of the water ring plate 200. This design allows the layout of the spray head 320 to be dynamically adjusted according to the tube blank specifications, for example, by changing the installation height of the spray head 320 by replacing threaded joints of different lengths.

[0042] In some embodiments, please refer to Figure 3The water supply unit 310 also includes a water supply pipe 312 and a quick connector 313. The water supply pipe 312 is disposed in the fixed entity 311, and the quick connector 313 is disposed on the fixed entity 311. One end of the water supply pipe 312 is connected to the quick connector 313, and the other end of the water supply pipe 312 forms multiple branch pipes that communicate with the spray head 320. The quick connector 313 is an interface component that can quickly connect or disconnect the pipe. Specifically, it can be implemented using a snap-fit ​​or threaded connector, and its function is to simplify the connection operation between the external water source and the water supply pipe 312.

[0043] Among them, the water supply pipeline 312 refers to the channel structure used to transmit cooling water, which can be implemented by metal pipe or pressure-resistant plastic pipe. Its function is to guide the cooling water from the quick connector 313 to each branch pipe.

[0044] Among them, the branch pipe refers to multiple independent channels branching off from the end of the water supply pipe 312. Specifically, it can be implemented by using a bifurcation pipe or manifold structure. Its function is to distribute the cooling water to different spray heads 320 to form a uniform coverage.

[0045] The fixed entity 311 serves as a supporting structure, and its internal water supply pipes 312 are connected to an external water source via quick connectors 313. Cooling water is transported through the water supply pipes 312 to the branch pipes at the ends, which distribute the water flow to the symmetrically arranged spray heads 320. The quick connectors 313 enable quick connection and disconnection between the water supply pipes 312 and the water source, while the branch pipe distribution design ensures a stable water supply to multiple spray heads 320, avoiding pressure loss or uneven flow caused by excessively long pipes.

[0046] In practical implementation, the spray head 320 is threadedly connected to the branch pipe. The spray head 320 and the branch pipe are connected by a combination of external and internal threads. For example, an external thread is provided at one end of the spray head 320 and a corresponding internal thread is provided at the end of the branch pipe, thereby tightening and fixing the two together. This connection method facilitates quick disassembly and assembly of the spray head 320 during maintenance, while ensuring the sealing of the cooling water supply.

[0047] Among them, the branch pipe refers to the diversion pipe formed by extending from the end of the water supply pipe 312. Specifically, it can be realized by using a multi-port pipe structure made of metal or high-temperature resistant plastic. The function of the branch pipe is to evenly distribute the cooling water to different spray heads 320 to avoid uneven water pressure distribution.

[0048] In some embodiments, please refer to Figure 2The water supply unit 310 also includes a regulating valve 314, which is installed on the water supply pipeline 312 to regulate the water flow of the spray head 320. The regulating valve 314 is a device for controlling the fluid flow rate, which can be implemented by using a ball valve or a butterfly valve. The cooling water flow rate is adjusted by changing the cross-sectional area of ​​the channel by rotating the valve core.

[0049] Specifically, the regulating valve 314 is installed on the main channel of the water supply pipeline 312, and the valve core opening is changed by rotating the adjusting handle on the valve body. When the tube blank material or process parameters change, the operator can manually adjust the opening of the regulating valve 314, thereby changing the flow rate of cooling water in the water supply pipeline 312. For example, when the tube blank wall thickness increases, the valve core opening can be increased to increase the water supply, so that the spray head 320 forms a denser coolant flow 321; when the tube needs to be cooled slowly, the valve core opening can be decreased to reduce the water flow impact force. The branch pipes of the water supply pipeline 312 are connected to the spray head 320 by threads to ensure uniform water pressure distribution in each spray unit.

[0050] In some embodiments, please refer to Figure 1 The sleeve 100 is provided with heat dissipation holes 110. Multiple heat dissipation holes 110 are equidistantly arranged around the axis of the sleeve 100. The heat dissipation holes 110 refer to the perforated structures opened on the surface of the sleeve 100 to accelerate the heat exchange between the sleeve 100 and the outside environment. The multiple heat dissipation holes 110 are distributed at the same intervals along the circumference of the sleeve 100, which can ensure the uniformity of heat dissipation in all areas of the sleeve 100 and avoid deformation caused by local temperature differences.

[0051] The diameter of the heat dissipation hole 110 gradually decreases along the axial direction of the sleeve 100. The diameter of the heat dissipation hole 110 is the largest at the end near the water ring disk 200. The diameter of the heat dissipation hole 110 changes continuously from one end of the sleeve 100 to the other end, which can adjust the heat dissipation efficiency at different axial positions and match the temperature gradient during the tube blank cooling process.

[0052] Specifically, during the tube blank sizing process, the sleeve 100 accumulates heat due to contact with the high-temperature tube material, and the heat dissipation holes 110 transfer the heat to the external environment through air convection. When multiple heat dissipation holes 110 are equidistantly distributed around the axis, the heat in the circumference of the sleeve 100 can be released synchronously, avoiding thermal stress concentration caused by uneven heat dissipation on one side. The diameter of the heat dissipation holes 110 gradually decreases along the axial direction, so that the diameter near the tube blank inlet end is larger for rapid heat dissipation, while the diameter near the outlet end is smaller to slow down the heat dissipation rate, thereby adapting to the physical process of the tube blank gradually cooling down inside the sizing sleeve.

[0053] Work process: First, rotate the regulating valve 314 so that the liquid flows into the water supply pipeline 312 at a certain flow rate. The cooling liquid flow 321 passes through the branch pipe of the water supply pipeline 312 and is output from the spray head 320 to perform cold spray on the pipe entering the sizing sleeve, eliminate the internal stress of the pipe, and improve the surface quality of the pipe.

[0054] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the present utility model.

Claims

1. A sizing sleeve for pre-cooling pipes, characterized in that, include: Sleeve; A water ring disc is fixedly connected to the end of the sleeve; The precooling assembly includes a water supply unit fixedly connected to the water ring plate and a pair of spray heads. One end of each spray head is fixedly connected to the water supply unit, and the other end of each spray head is vertically downward. The water supply unit is located on top of the water ring plate and can supply cooling water to the spray heads. The two spray heads are symmetrically arranged along the vertically divided plane of the water ring plate to form two streams of cooling liquid flowing down the sides of the pipe wall on the pipe to be cooled and sized.

2. A sizing sleeve for pre-cooling pipes according to claim 1, characterized in that, Multiple pairs of spray heads are arranged in an array along the axial direction of the pipe to form multiple streams of cooling liquid that can cover the pipe wall.

3. A sizing sleeve for pre-cooling pipes according to claim 1, characterized in that, The water conveying unit includes a fixed entity, which is fixedly connected to the water ring disc, and the spray head is detachably connected to the fixed entity.

4. A sizing sleeve for pre-cooling pipes according to claim 3, characterized in that, The water supply unit also includes a water supply pipeline and a quick connector. The water supply pipeline is disposed in the fixed entity, and the quick connector is disposed on the fixed entity. One end of the water supply pipeline is connected to the quick connector, and the other end of the water supply pipeline forms multiple branch pipes that communicate with the spray head.

5. A sizing sleeve for pre-cooling pipes according to claim 4, characterized in that, The spray head is threadedly connected to the branch pipe.

6. A sizing sleeve for pre-cooling pipes according to claim 5, characterized in that, The water supply unit also includes a regulating valve, which is installed on the water supply pipeline to regulate the water flow rate of the spray head.

7. A sizing sleeve for pre-cooling pipes according to claim 1, characterized in that, The sleeve is provided with heat dissipation holes, and a plurality of heat dissipation holes are equidistantly arranged around the axis of the sleeve.

8. A sizing sleeve for pre-cooling pipes according to claim 7, characterized in that, The diameter of the heat dissipation hole gradually decreases along the axial direction of the sleeve.

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