Composite heat dissipation equipment for preparing high-efficiency heat-conducting low-voltage cable

Abstract

The utility model discloses a kind of composite heat-dissipating equipment for preparing high-efficiency heat-conducting low-voltage cable, belong to cable manufacturing equipment technical field.The equipment includes wash basin and water distribution assembly arranged at its one side.Spraying assembly is rotatably arranged in the water distribution assembly middle part, and ring cylinder cavity is formed between the two.The equipment also includes water supply assembly and high-pressure pump, and high-pressure pump pumps water in wash basin into water supply assembly, and then into ring cylinder cavity.The core innovation of the utility model is that, through the high-pressure water flow of inflow ring cylinder cavity driving rotating ring and blade rotation in water distribution assembly, and then driving spraying assembly circumferential rotation, make the spraying hole on it spray out high-speed water jet doing circular motion, the cable passing through is carried out dynamic, evenly sweeping type cooling.The design completely destroys the thermal boundary layer of cable surface, significantly improves heat dissipation efficiency and cooling uniformity, while compact structure, low energy consumption, effectively solve the defects of traditional static water cooling or one-way flow cooling mode.

Description

Technical Field

[0001] This utility model belongs to the field of cable manufacturing equipment technology, and in particular relates to a composite heat dissipation device for the preparation of high-efficiency thermally conductive low-voltage cables. Background Technology

[0002] In the production process of low-voltage cables, the cable needs to be cooled and shaped immediately after the insulation layer is extruded to fix the insulation structure and ensure its electrical performance. Water cooling is one of the most commonly used and efficient cooling methods. Typically, the cable heated by the extruder is guided through a washbasin (i.e., a water tank) filled with cooling water for cooling.

[0003] Traditional cable cooling water tanks are mostly static immersion type, where the cable simply passes through a still body of water. While this method is simple in structure, it has significant drawbacks: a stable boundary layer of hot water film forms on the cable surface. This film hinders the rapid transfer of heat to the main cooling water, resulting in low heat dissipation efficiency and uneven cooling. To achieve the required cooling effect, it is often necessary to extend the tank length or reduce the production line speed, which not only increases the equipment footprint but also affects production efficiency.

[0004] To overcome the shortcomings of static water cooling, several improvements have emerged in existing technologies. For example, a circulating water pump is used to force water flow, or an agitator is installed in the water tank to disrupt the hot water boundary layer on the cable surface, thereby improving heat exchange efficiency. However, these solutions still have some problems: simple forced water flow may be unidirectional and unable to provide uniform circumferential cooling to the cable, which can easily lead to uneven cooling and internal stress for cables with large cross-sections; while agitators can disturb the water, they consume a lot of energy and lack precise control over the water flow, resulting in relatively low overall energy efficiency.

[0005] Therefore, there is an urgent need in this field for a cooling device that can provide uniform and efficient heat dissipation for cables in a circumferential manner, while also being compact in structure and low in energy consumption, in order to improve the production quality and efficiency of low-voltage cables. Utility Model Content

[0006] The purpose of this invention is to provide a composite heat dissipation device for the manufacture of high-efficiency thermally conductive low-voltage cables, thereby solving the problems mentioned in the background art. To achieve the above objective, the following technical solution is provided: Includes a washbasin, with a water distribution component installed on one side of the washbasin; The water distribution assembly is fixedly installed on the side of the washbasin, and the spray assembly is rotatably installed in the middle of the water distribution assembly, forming a ring-shaped cylindrical chamber between the water distribution assembly and the spray assembly. The equipment also includes a water supply component and a high-pressure pump. The water supply component is connected to the upper end of the water distribution component and is connected to the annular cylindrical chamber. The high-pressure pump pumps the water in the washbasin into the water supply component.

[0007] Specifically, the water distribution assembly includes an annular cover, in which a rotating ring is rotatably mounted via a bearing in the center, and multiple blades are evenly arranged around the circumference of the rotating ring.

[0008] Specifically, the inner wall of the opening of the annular cover is provided with an annular protrusion, and a sealing ring groove is provided on the outer circumference of the rotating ring, which is sealed and fitted with the annular protrusion.

[0009] Specifically, multiple guide blocks are evenly arranged circumferentially on the inner ring sidewall of the rotating ring.

[0010] Specifically, the spray assembly includes an annular cylinder, with multiple spray holes evenly distributed circumferentially on the upper side wall of the annular cylinder, and a retaining ring provided at one end of the annular cylinder.

[0011] Specifically, the outer wall of the ring cylinder has multiple straight grooves along the axial direction, and the straight grooves slide in conjunction with the guide blocks.

[0012] Specifically, a guide channel and a mounting plate are provided on one side of the washbasin. The water distribution component is fixedly installed on the mounting plate, and the water outlet of the water distribution component is connected to the inlet of the guide channel.

[0013] Specifically, the water supply assembly includes a rectifier housing and a water inlet channel therein. The rectifier housing is fixedly connected to the upper end of the annular cover, and the water inlet channel is connected to the annular cylindrical chamber.

[0014] Specifically, a water outlet pipe is installed at the bottom of the washbasin, the inlet of the high-pressure pump is connected to the water outlet pipe, and the outlet of the high-pressure pump is connected to the water inlet channel.

[0015] Summary of the beneficial effects of this utility model: This invention utilizes rotary spray technology to achieve dynamic, circumferential, and uniform sweeping cooling of the cable surface, fundamentally solving the problems of uneven cooling due to static boundary layers and unidirectional flow, thus significantly improving heat dissipation efficiency.

[0016] Regarding the issues of "large equipment footprint and low production efficiency": Due to its extremely high heat exchange efficiency, the required length of the water tank can be significantly shortened to achieve the same cooling effect, thereby reducing the equipment footprint and allowing for increased production line speed, thus improving production efficiency.

[0017] This invention cleverly utilizes the pressure energy of the system's own circulating water as a driving source, eliminating the need for an additional motor to drive the rotating mechanism. This results in efficient energy utilization and low energy consumption. Furthermore, the uniformity of the spray and the rotation speed are controlled by the water flow itself, leading to a simple structure and reliable control. Modular design (such as water distribution components and spray components) makes installation and maintenance extremely convenient. The closed-loop system is water-saving and environmentally friendly. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the appearance of this utility model; Figure 2 This is an exploded view of this utility model; Figure 3 This is an installation diagram of the water distribution assembly and the spray assembly; Figure 4 It is an assembly diagram of the water distribution assembly and the spray assembly; Figure 5 This is a cross-sectional view of the water distribution assembly; Figure 6 This is a schematic diagram of the washbasin's appearance.

[0019] The attached figures are labeled as follows: 10. Washbasin; 11. Water outlet pipe; 12. Flow guide channel; 13. Mounting plate; 20. Water distribution assembly; 21. Annular cover; 22. Annular protrusion; 23. Rotating ring; 23a. Sealing ring groove; 24. Blade; 25. Guide block; 30. High-pressure pump; 31. Water inlet; 32. Water outlet; 40. Spray assembly; 41. Ring cylinder; 42. Spray hole; 43. Straight channel; 44. Snap ring; 50. Water supply assembly; 51. Rectifier shell; 52. Water inlet channel. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0021] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0022] See Figures 1 to 6The composite heat dissipation device for manufacturing high-efficiency thermally conductive low-voltage cables described in this utility model includes a washbasin 10 for holding cooling water and through which the cable passes. The core innovation of this device is concentrated on one side of the washbasin 10, which mainly consists of a water distribution assembly 20, a spray assembly 40, a water supply assembly 50, and a high-pressure pump 30 that provides power.

[0023] High-pressure pump 30 draws cooling water from the bottom of washbasin 10 and pumps it into water supply assembly 50. The high-pressure water flows through water supply assembly 50 into an annular chamber formed by nested water distribution assembly 20 and spray assembly 40. Within this chamber, part of the water flow's energy is used to drive the rotating parts (rotating ring 23 and its blades 24) in water distribution assembly 20, while the other part is converted into high-speed, rotating water jets ejected from spray holes 42 in spray assembly 40. These water jets uniformly impact and sweep across the surface of the passing cable from above and sides, thoroughly disrupting its thermal boundary layer and achieving efficient and uniform cooling. After use, the water falls into guide trough 12 and returns to washbasin 10, completing a closed loop. Example 1

[0024] This embodiment will describe in detail the water distribution assembly 20, the spray assembly 40, and their synergistic effects, specifically: like Figure 3 , Figure 4 , Figure 5 As shown, the core of the water distribution assembly 20 is an annular cover 21, inside which a rotating ring 23 is rotatably mounted via bearings. Multiple blades 24 are evenly fixed circumferentially on the rotating ring 23. More importantly, multiple guide blocks 25 are evenly arranged circumferentially on the inner ring sidewall of the rotating ring 23. The core of the spray assembly 40 is an annular cylinder 41, whose outer sidewall has multiple straight grooves 43 axially formed, which slide in contact with the guide blocks 25 on the rotating ring 23. Multiple spray holes 42 are evenly arranged circumferentially on the upper sidewall of the annular cylinder 41. After the annular cover 21, rotating ring 23, and annular cylinder 41 are assembled, a sealed annular chamber is formed between them.

[0025] The technical effects of this solution are as follows: When the high-pressure water flow enters the annular chamber from the water supply component 50, it first impacts the blades 24 on the rotating ring 23. The water flow generates a tangential force on the blades 24, which forms a torque that drives the entire rotating ring 23 to rotate around its axis, converting the kinetic energy of the ejected water flow into the mechanical energy of the rotating ring 23.

[0026] The rotation of the rotating ring 23 is precisely transmitted to the ring cylinder 41 through the sliding engagement of the guide block 25 on its inner wall and the straight groove 43 on the outer wall of the ring cylinder 41. Therefore, the ring cylinder 41 also rotates synchronously. Since the spray holes 42 are evenly distributed circumferentially on the upper side wall of the ring cylinder 41, all the spray holes 42 revolve around the axis of the cable.

[0027] The two functions described above work together to achieve a uniform cooling effect on the cable surface. When the device is in use, the water jets ejected from the spray holes 42 are no longer static, fixed-direction water columns, but rather a series of high-speed moving jets in circular motion. These moving jets act like a "water brush," continuously and thoroughly sweeping the upper part of the cable circumferentially. This dynamic cooling sweep effectively eliminates the stable hot water boundary layer formed on the cable surface due to heat accumulation, ensuring that the high-temperature cable surface is always in direct contact with fresh, low-temperature cooling water, thereby greatly improving heat exchange efficiency. This achieves active, uniform circumferential heat dissipation of the cable, effectively avoiding internal stress problems in the cable insulation layer caused by uneven cooling. Example 2

[0028] like Figure 5 As shown, further, an annular protrusion 22 is provided around the inner sidewall of the opening of the annular cover 21. Correspondingly, a sealing annular groove 23a is provided on the outer circumference of the rotating ring 23. During assembly, the annular protrusion 22 is embedded in the sealing annular groove 23a, and the two form a dynamic sealing fit.

[0029] The technical effects of this solution are as follows: The above design ensures that the annular cylindrical chamber maintains good sealing performance during the rotation of the rotating ring 23 relative to the annular cover 21.

[0030] A good seal prevents excessive leakage of high-pressure water from the rotating mating surfaces, thus maintaining the necessary water pressure within the annular chamber. Only by maintaining sufficient water pressure can the impact force of the water flow on the blades 24 be large enough to generate a stable rotational driving torque, ensuring that the water jet from the spray holes 42 has sufficient velocity and range to achieve the desired impact cooling effect. Therefore, this sealing structure ensures efficient and stable operation of the cable cooling system. Furthermore, the grooved fit also provides axial positioning for the rotating ring 23, preventing axial movement during operation and further improving the stability and reliability of the equipment.

[0031] like Figures 1-5Furthermore, a retaining ring 44 is provided at one end of the annular cylinder 41. The function of the retaining ring 44 is to engage with the corresponding structure of the water distribution assembly 20 (such as the annular cover 21 or the mounting plate 13) to achieve axial fixation of the spray assembly 40. This allows the spray assembly 40 to be securely installed in the set position. At the same time, when it is necessary to clean the spray holes 42 or perform maintenance, simply release the retaining ring 44 to slide the entire annular cylinder 41 out of the rotating ring 23 along the guide block 25, making maintenance very convenient.

[0032] Furthermore, the water supply assembly 50 includes a rectifier housing 51, which has one or more water inlet channels 52 inside. The rectifier housing 51 is fixedly connected to the upper end of the annular cover 21, so that the water inlet channels 52 are directly connected to the lower annular cylindrical chamber.

[0033] The technical effects of this solution are as follows: The water flow from the outlet 32 ​​of the high-pressure pump 30 may be turbulent or pulsating. The rectifier shell 51 and its internal inlet channel 52 firstly serve to distribute and stabilize the water flow. It can guide the water flow smoothly and evenly to all circumferential parts of the annular chamber, avoiding direct impact of the water flow on a few local blades 24 that could cause rotational instability or vibration, and helping the rotating ring 23 to obtain a stable starting torque and uniform rotation.

[0034] By directly fixing the water supply component 50 to the water distribution component 20, the high-pressure water delivery path is minimized, the structure is compact, and unnecessary pipelines and pressure losses are reduced. Example 3

[0035] like Figure 1 , Figure 6 As shown, a water outlet pipe 11 is provided at the bottom of the washbasin 10, which is connected to the water inlet 31 of the high-pressure pump 30. The water outlet 32 ​​of the high-pressure pump 30 is connected to the water inlet channel 52 of the water supply component 50. A guide channel 12 and a mounting plate 13 are provided on one side of the washbasin 10. The water distribution component 20 is fixedly installed on the mounting plate 13, and its water outlet (i.e., the outlet of the spray component 40) smoothly abuts against the inlet of the guide channel 12.

[0036] In this technical solution, it should be noted that in order to ensure the stable rotation of the blade 24, a nozzle (not shown in the figure) can be provided at the end of the water inlet channel 52. The nozzle is preferably arranged in a vertical orientation. At this time, the direction of the water flow sprayed by the nozzle coincides with the tangent of the circle where the blade 24 is located. When the nozzle sprays water onto the blade 24, the blade 24 can receive the maximum torque transmitted by the water flow and thus be driven quickly by the high-pressure water flow.

[0037] The technical effects of this solution are as follows: the high-pressure pump 30 draws water from the bottom of the washbasin 10, the water heated after cooling the cable is sprayed out by the spray assembly 40, and after heat exchange, it falls into the guide channel 12 and finally flows back to the washbasin 10. This forms a complete closed water circulation system.

[0038] The advantages of this system are: a) Conserve water resources; b) The large volume of water in the washbasin 10 acts as a heat storage tank, which can buffer the rapid rise in water temperature and make the system temperature rise more gradual. c) The water that takes away heat from the cable eventually returns to the system. The high-pressure pump 30 draws water that has been preliminarily cooled and is located at a lower temperature at the bottom of the tank, rather than directly drawing hot water from the surface. This improves the working efficiency of the high-pressure pump and the energy efficiency of the entire system to some extent.

[0039] The function of the guide channel 12 is to receive the water flowing out from the rotating spray assembly 40 and smoothly guide it back to the washbasin 10, preventing water splashing and keeping the working environment clean. The mounting plate 13 provides a sturdy and stable mounting base for the entire water distribution-spraying system, ensuring that its relative position with the washbasin 10 is accurate and that the spray water jets can accurately act on the cables.

[0040] The workflow of this utility model is as follows: 1. Start-up: High-pressure pump 30 operates, drawing cooling water from the bottom of washbasin 10 through outlet pipe 11.

[0041] 2. Pumping: High-pressure water is pumped into the water inlet channel 52 of the water supply component 50 through the outlet 32.

[0042] 3. Energy conversion: High-pressure water enters the annular chamber, impacts the blades 24, and drives the rotating ring 23 and the connected annular cylinder 41 to rotate together.

[0043] 4. Rotating spray: High-pressure water is pressurized in the chamber and ejected from the spray holes 42 on the rotating ring cylinder 41 to form a rotating moving water jet.

[0044] 5. High-efficiency cooling: The rotating water jet performs dynamic sweeping cooling of the cable passing through its center in all directions without dead angles, completely destroying the thermal boundary layer.

[0045] 6. Return flow: After the cooling process is completed, the water falls into the guide channel 12 and smoothly returns to the washbasin 10.

[0046] 7. Circulation: The water flows continuously in the system until the cooling process is over.

[0047] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the protection scope of this utility model.

Claims

1. A composite heat dissipation device for manufacturing high-efficiency thermally conductive low-voltage cables, comprising a washbasin (10), wherein a water distribution assembly (20) is provided on one side of the washbasin (10), characterized in that: The water distribution assembly (20) is fixedly installed on the side of the washbasin (10), and a spray assembly (40) is rotatably installed in the middle of the water distribution assembly (20). A ring-shaped cylindrical chamber is formed between the water distribution assembly (20) and the spray assembly (40). The device also includes a water supply component (50) and a high-pressure pump (30). The water supply component (50) is connected to the upper end of the water distribution component (20) and is connected to the annular cylindrical chamber. The high-pressure pump (30) pumps water from the washbasin (10) into the water supply component (50).

2. The composite heat dissipation device according to claim 1, characterized in that, The water distribution assembly (20) includes an annular cover (21), and a rotating ring (23) is rotatably arranged in the middle of the annular cover (21) via a bearing. Multiple blades (24) are evenly arranged around the circumference of the rotating ring (23).

3. The composite heat dissipation device according to claim 2, characterized in that, The inner sidewall of the opening of the annular cover (21) is provided with an annular protrusion (22), and the outer circumference of the rotating ring (23) is provided with a sealing annular groove (23a), which is sealed to the annular protrusion (22).

4. The composite heat dissipation device according to claim 2 or 3, characterized in that, Multiple guide blocks (25) are evenly arranged circumferentially on the inner ring sidewall of the rotating ring (23).

5. The composite heat dissipation device according to claim 4, characterized in that, The spray assembly (40) includes an annular cylinder (41), and the upper side wall of the annular cylinder (41) is evenly provided with a plurality of spray holes (42) along the circumference. One end of the annular cylinder (41) is provided with a retaining ring (44).

6. The composite heat dissipation device according to claim 5, characterized in that, The outer wall of the ring cylinder (41) has multiple straight grooves (43) along the axial direction, and the straight grooves (43) slide in cooperation with the guide block (25).

7. The composite heat dissipation device according to claim 1, characterized in that, A guide channel (12) and a mounting plate (13) are provided on one side of the washbasin (10). The water distribution component (20) is fixedly installed on the mounting plate (13), and the water outlet of the water distribution component (20) abuts against the inlet of the guide channel (12).

8. The composite heat dissipation device according to claim 2, characterized in that, The water supply assembly (50) includes a rectifier shell (51) and a water inlet channel (52) disposed therein. The rectifier shell (51) is fixedly connected to the upper end of the annular cover (21), and the water inlet channel (52) is connected to the annular cylindrical chamber.

9. The composite heat dissipation device according to claim 8, characterized in that, The bottom of the washbasin (10) is provided with a water outlet pipe (11), the water inlet (31) of the high pressure pump (30) is connected to the water outlet pipe (11), and the water outlet (32) of the high pressure pump (30) is connected to the water inlet channel (52).

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