Cable with high heat dissipation efficiency

Abstract

The invention discloses a cable with high heat dissipation efficiency, which comprises a cable core, an insulating heat conduction layer is wrapped outside the cable core, and a heat dissipation layer is wrapped outside the insulating heat conduction layer; the heat dissipation layer comprises a plurality of heat dissipation units which are evenly distributed in the circumferential direction of the insulating heat conduction layer, and the side walls of the adjacent heat dissipation units are attached to each other, so that the multiple heat dissipation units form a closed circular ring. The heat dissipation units of the cable surround the cable core to form the closed circular ring, so that the contact area with the outer surface of the cable core is remarkably increased, and the heat dissipation efficiency is higher. Moreover, when the temperature in the heat dissipation cavities of the heat dissipation units is higher than the preset temperature, the deformation assemblies in the heat dissipation cavities contract to pull the two second heat exchange layers to get close to each other, so that the distance between the side walls of the two adjacent heat dissipation units is increased, and the contact area between the outer walls of the second heat exchange layers and the outside air is increased; the cable has two heat dissipation modes of cooling medium heat dissipation and external air heat dissipation at the same time, the heat dissipation effect is remarkable, and the heat dissipation efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of cables, and in particular to a cable with high heat dissipation efficiency. Background Art

[0002] Cables are essential transmission equipment in power transmission and are widely used in life. Cables include an outer PVC protective layer and an internal cable core. Cables tend to generate a lot of heat under high load. If the heat cannot be dissipated in time, this will affect the transmission of the cable, accelerate cable aging, and reduce its service life. Therefore, the cable is required to have good heat dissipation performance. However, the cables in the prior art have poor heat dissipation and poor compressive protection performance. Therefore, a cable with high heat dissipation efficiency is needed.

[0003] In the prior art, a Chinese invention patent with publication number CN106448900A discloses a high-efficiency heat dissipation composite cable, which includes an outermost PVC protective layer and at least two cable cores arranged in the PVC protective layer. Two heat sinks are integrally injection molded on both sides of the PVC protective layer, and the heat sink has a cavity for accommodating cooling water; both ends of the PVC protective layer are provided with a heat dissipation cavity, the bottom surface of the heat dissipation cavity is a circular arc convex surface, and a corresponding assembly part is provided on the heat sink facing the circular arc convex surface, and the heat sink is partially embedded in the heat dissipation cavity, and the assembly part of the heat sink is meshed with the circular arc convex surface of the bottom surface of the heat dissipation cavity. The structure of the present invention is simple, the cable core is vacated and erected inside the PVC protective layer, and one end face of the cable core is in contact with the heat sink, which can quickly dissipate heat through the water source inside the heat sink, and absorb heat through the heat sink, so the heat dissipation is very good, and it has better compressive resistance and shear resistance than ordinary cables. However, the contact area between the cable core and the heat sink of this type of high-efficiency heat dissipation composite cable is too small, and there is a problem of insufficient cooling efficiency. Summary of the invention

[0004] In view of the defects in the prior art, the present invention provides a cable with high heat dissipation efficiency to solve the technical problems raised in the background technology.

[0005] In order to achieve the above object, the present invention provides a cable with high heat dissipation efficiency, comprising a cable core, the cable core is wrapped with an insulating heat-conducting layer, and the insulating heat-conducting layer is wrapped with a heat dissipation layer; wherein,

[0006] The heat dissipation layer includes a plurality of heat dissipation units evenly distributed along the circumference of the insulating heat-conducting layer, and the side walls of adjacent heat dissipation units are arranged in contact with each other, so that the plurality of heat dissipation units form a closed circular ring;

[0007] The heat dissipation unit comprises a heat dissipation cavity, a deformation component arranged in the heat dissipation cavity at intervals along the extension direction of the heat dissipation cavity, and a cooling medium flowing along the extension direction of the heat dissipation cavity, and the heat dissipation cavity is arranged to extend along the axial direction of the cable core;

[0008] The heat dissipation cavity is formed by a first heat exchange layer, second heat exchange layers located on both sides of the first heat exchange layer and connected between the tops of the two second heat exchange layers, and the outer layer is made of a flexible material; the outer wall of the first heat exchange layer is tightly fitted with the outer wall of the insulating heat conductive layer;

[0009] The deformation component is connected to the inner walls of the two second heat exchange layers. When the temperature in the heat dissipation cavity is higher than the preset temperature, the deformation component contracts to pull the two second heat exchange layers closer to each other, thereby increasing the distance between the side walls of two adjacent heat dissipation units.

[0010] Furthermore, the deformation component is made of nickel-titanium alloy.

[0011] Furthermore, the deformation component is in a rod-shaped structure, and two ends of the deformation component are respectively connected to the tops of two inner walls of the second heat exchange layer.

[0012] Furthermore, the deformation component is in a Y-shaped structure, and the two ends of the top of the deformation component are respectively connected to the tops of the two inner walls of the second heat exchange layer, and the bottom end is connected to the first heat exchange layer.

[0013] Furthermore, the first heat exchange layer and the second heat exchange layer are integrally formed.

[0014] Furthermore, the first heat exchange layer and the second heat exchange layer are made of elastic metal material.

[0015] Furthermore, the cooling medium includes air, coolant or water mist.

[0016] Furthermore, the cooling medium in two adjacent heat dissipation chambers flows in opposite directions.

[0017] Furthermore, the inner wall of the first heat exchange layer and the inner wall of the second heat exchange layer are both provided with fins, and the fins are extended along the axial direction of the cable core.

[0018] Furthermore, a wear-resistant layer is provided on the surface of the outer layer.

[0019] The beneficial effects of the present invention are embodied in:

[0020] The cable provided in the present application has a heat dissipation unit that forms a closed ring around the cable core, which significantly increases the contact area with the outer surface of the cable core and has higher heat dissipation efficiency.

[0021] Moreover, when the temperature in the heat dissipation cavity of the heat dissipation unit is higher than the preset temperature, the deformation component in the heat dissipation cavity contracts to pull the two second heat exchange layers closer to each other, thereby increasing the distance between the side walls of the two adjacent heat dissipation units, thereby increasing the contact area between the outer wall of the second heat exchange layer and the outside air, so that the cable has both cooling medium heat dissipation and outside air heat dissipation. Compared with traditional closed cables, the heat dissipation effect is significant and the heat dissipation efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0023] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. For ordinary technicians in this field, other accompanying drawings can also be obtained based on these accompanying drawings without paying creative labor.

[0024] Figure 1 A schematic diagram of the structure of a cable with high heat dissipation efficiency provided by an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of the end face structure of a cable with high heat dissipation efficiency provided by an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the end surface structure of a heat dissipation unit provided in an embodiment of the present invention.

[0027] The realization of the purpose, functional features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. The above-mentioned drawings have shown clear embodiments of this application, which will be described in more detail later. These drawings and textual descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0028] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0029] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0030] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0032] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] like Figure 1 As shown, an embodiment of the present invention provides a cable with high heat dissipation efficiency, comprising a cable core 1, the cable core 1 is wrapped with an insulating heat-conducting layer 2, and the insulating heat-conducting layer 2 is wrapped with a heat dissipation layer. Figure 1 and Figure 2 As shown, the heat dissipation layer includes a plurality of heat dissipation units 3 uniformly distributed along the circumference of the insulating heat-conducting layer 2, and the side walls of adjacent heat dissipation units 3 are arranged in contact with each other, so that the plurality of heat dissipation units 3 form a closed ring, thereby protecting the cable core 1.

[0035] like Figure 3 As shown, the heat dissipation unit 3 includes a heat dissipation cavity, deformation components 4 arranged in the heat dissipation cavity at intervals along the extension direction of the heat dissipation cavity, and a cooling medium flowing along the extension direction of the heat dissipation cavity. The heat dissipation cavity is arranged to extend axially along the cable core 1.

[0036] The heat dissipation cavity is formed by a first heat exchange layer 5, a second heat exchange layer 6 disposed opposite to each other on both sides of the first heat exchange layer 5, and an outer layer 7 connected between the tops of the two second heat exchange layers 6. The outer layer 7 is made of a flexible material and can be deformed. The outer layer 7 can be made of a flexible silicone material. The outer wall of the first heat exchange layer 5 is closely fitted with the outer wall of the insulating heat conductive layer 2, and is used to conduct the heat generated by the cable core 1 when transmitting electricity into the heat dissipation cavity.

[0037] In this embodiment, the cooling medium can be air, coolant or water mist, and the coolant can be water. Through the corresponding equipment of the peripheral device, the cooling medium flows in the heat dissipation cavity, thereby taking away the heat in the heat dissipation cavity and realizing the cooling of the cable core 1. In addition, in order to make the cooling effect on the cable core 1 more uniform, the cooling medium in the two adjacent heat dissipation cavities flows in opposite directions, that is, the cooling medium in the two adjacent heat dissipation cavities flows in opposite directions.

[0038] The deformation component 4 is connected to the inner walls of the two second heat exchange layers 6. When the temperature in the heat dissipation cavity is higher than the preset temperature, the deformation component 4 contracts to pull the two second heat exchange layers 6 closer to each other, so that the distance between the side walls of the two adjacent heat dissipation units 3 is increased, that is, the contact area between the outer walls of the second heat exchange layers 6 on both sides of the heat dissipation unit 3 and the outside air is increased, thereby improving the air heat dissipation effect.

[0039] In this embodiment, the deformation component 4 can be made of nickel-titanium alloy, and the deformation temperature of nickel-titanium alloy is generally between 50°C and 100°C. The deformation component 4 can adopt a rod-shaped structure or a Y-shaped structure. If the deformation component 4 is a rod-shaped structure, the two ends of the deformation component 4 are respectively connected to the top of the two inner walls of the second heat exchange layer 6. If the deformation component 4 is a Y-shaped structure, the two ends of the top of the deformation component 4 are respectively connected to the top of the two inner walls of the second heat exchange layer 6, and the bottom is connected to the first heat exchange layer 5.

[0040] For example, since the heat dissipation efficiency of the cooling medium is relatively fixed, when the power load transmitted by the cable core 1 increases within a period of time, the temperature of the cable core 1 rises rapidly, causing the temperature in the heat dissipation cavity to rise to a temperature higher than the deformation temperature of the nickel-titanium alloy, for example, higher than 50°C. At this time, the deformation component 4 will shrink, thereby pulling the two second heat exchange layers 6 closer to each other, thereby increasing the distance between the side walls of the two adjacent heat dissipation units 3, and even increasing the contact area between the outer walls of the second heat exchange layers 6 on both sides of the heat dissipation unit 3 and the outside air, thereby improving the air heat dissipation effect and increasing the heat dissipation efficiency of the cable.

[0041] When the temperature in the heat dissipation cavity drops below the deformation temperature of the nickel-titanium alloy, the deformation component 4 stretches and recovers again, releasing the pulling on the second heat exchange layers 6 on both sides, and the second heat exchange layers 6 return to their initial state, that is, the side walls of the adjacent heat dissipation units 3 are again fitted together.

[0042] In this embodiment, the first heat exchange layer 5 and the second heat exchange layer 6 are integrally formed. The first heat exchange layer 5 and the second heat exchange layer 6 are made of elastic metal material, for example, copper alloy or aluminum alloy.

[0043] Furthermore, in order to increase the heat exchange area, the inner wall of the first heat exchange layer 5 and the inner wall of the second heat exchange layer 6 are both provided with fins 8 , and the fins 8 are extended along the axial direction of the cable core 1 .

[0044] The surface of the outer sheath 7 is also provided with a wear-resistant layer 9 for enhancing the wear resistance of the cable, improving the anti-wear performance, and protecting the outer sheath 7 .

[0045] In summary, the cable provided in the present application has a heat dissipation unit that forms a closed ring around the cable core, which significantly increases the contact area with the outer surface of the cable core and has higher heat dissipation efficiency.

[0046] Moreover, when the temperature in the heat dissipation cavity of the heat dissipation unit is higher than the preset temperature, the deformation component in the heat dissipation cavity contracts to pull the two second heat exchange layers closer to each other, thereby increasing the distance between the side walls of the two adjacent heat dissipation units, thereby increasing the contact area between the outer wall of the second heat exchange layer and the outside air, so that the cable has both cooling medium heat dissipation and outside air heat dissipation. Compared with traditional closed cables, the heat dissipation effect is significant and the heat dissipation efficiency is high.

[0047] Finally, it should be noted that the various technical features of the technical solution of the present application can be combined arbitrarily. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of the present application.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some or all of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and should all be included in the scope of the claims and specification of the present invention.

Claims

1. A cable with high heat dissipation efficiency, comprising a cable core (1), wherein the cable core (1) is wrapped with an insulating heat-conducting layer (2), characterized in that: The insulating heat-conducting layer (2) is wrapped with a heat dissipation layer; wherein: The heat dissipation layer comprises a plurality of heat dissipation units (3) uniformly distributed along the circumference of the insulating heat-conducting layer (2), and the side walls of adjacent heat dissipation units (3) are arranged to fit each other, so that the plurality of heat dissipation units (3) form a closed circular ring; The heat dissipation unit (3) comprises a heat dissipation cavity, a deformation component (4) arranged in the heat dissipation cavity at intervals along the extension direction of the heat dissipation cavity, and a cooling medium flowing along the extension direction of the heat dissipation cavity, wherein the heat dissipation cavity is arranged to extend axially along the cable core (1); The heat dissipation cavity is formed by enclosing a first heat exchange layer (5), second heat exchange layers (6) arranged opposite to each other on both sides of the first heat exchange layer (5), and an outer layer (7) connected between the tops of the two second heat exchange layers (6), wherein the outer layer (7) is made of a flexible material; the outer wall of the first heat exchange layer (5) is tightly fitted to the outer wall of the insulating heat conductive layer (2); The deformation component (4) is connected to the inner walls of the two second heat exchange layers (6); when the temperature in the heat dissipation cavity is higher than a preset temperature, the deformation component (4) contracts to pull the two second heat exchange layers (6) closer to each other, thereby increasing the distance between the side walls of two adjacent heat dissipation units (3).

2. A cable with high heat dissipation efficiency as claimed in claim 1, characterized in that: The deformation component (4) is made of nickel-titanium alloy.

3. A cable with high heat dissipation efficiency as claimed in claim 2, characterized in that: The deformation component (4) is in the form of a rod, and the two ends of the deformation component (4) are respectively connected to the tops of the inner walls of the two second heat exchange layers (6).

4. A cable with high heat dissipation efficiency as claimed in claim 2, characterized in that: The deformation component (4) has a Y-shaped structure, with the top ends of the deformation component (4) respectively connected to the tops of the two inner walls of the second heat exchange layers (6), and the bottom end connected to the first heat exchange layer (5).

5. A cable with high heat dissipation efficiency as claimed in claim 1, characterized in that: The first heat exchange layer (5) and the second heat exchange layer (6) are integrally formed.

6. A cable with high heat dissipation efficiency as claimed in claim 1, characterized in that: The first heat exchange layer (5) and the second heat exchange layer (6) are made of elastic metal material.

7. A cable with high heat dissipation efficiency as claimed in claim 1, characterized in that: The cooling medium includes air, cooling liquid or water mist.

8. A cable with high heat dissipation efficiency as claimed in claim 1, characterized in that: The cooling medium in two adjacent heat dissipation chambers flows in opposite directions.

9. A cable with high heat dissipation efficiency as claimed in claim 1, characterized in that: The inner wall of the first heat exchange layer (5) and the inner wall of the second heat exchange layer (6) are both provided with fins (8), and the fins (8) are extended along the axial direction of the cable core (1).

10. A cable with high heat dissipation efficiency as claimed in claim 1, characterized in that: The surface of the outer layer (7) is provided with a wear-resistant layer (9).

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