Novel high-power cable

Abstract

The utility model relates to a novel high-power cable, which comprises a bare copper stranded conductor, a spiral stranded bare copper conductor and an outer insulating layer, and the spiral stranded bare copper conductor is spirally stranded on the bare copper stranded conductor. And the outer insulating layer is sleeved on the spiral stranded bare copper conductor. And a liquid cooling cavity with a spiral structure is formed between the outer insulating layer and the bare copper stranded conductor and is used for circulating cooling liquid. The outer insulating layer is supported by the spiral stranded bare copper conductor to form a stable liquid cooling hole with a spiral structure for circulation of cooling liquid, so that the cooling liquid can be uniformly cooled around the bare copper stranded conductor, the heat dissipation efficiency is high, and the heat dissipation effect is good; meanwhile, the spiral stranded bare copper conductor and the bare copper stranded conductor can be used as a conductor together, thereby increasing the sectional area of the conductor, increasing the current-carrying capacity of the conductor, and improving the power of the cable.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a novel high-power cable. Background Art

[0002] With the rapid development of global communications, 5G communication infrastructure has been widely deployed. A large number of communication infrastructures will require a large amount of electrical energy support. A large amount of electrical energy must be transmitted through high-performance power lines, resulting in increasingly dense cable laying space. Cables generate heat when working, and dense space makes it difficult for cables to dissipate heat. If the cause is not found and the fault is not promptly eliminated, the cable will continue to be powered on and run continuously, resulting in insulation thermal breakdown, causing the cable to short-circuit and trip between phases, which may cause fires in severe cases, affecting the service life of the cable and the safety of people and property. At the same time, due to the increasing demand for electrical energy, the power of conventional cables is already slightly insufficient. Utility Model Content

[0003] The purpose of the utility model is to provide a new type of high-power cable, which can form a stable spiral structure of liquid cooling pores for cooling liquid to circulate, so that the cooling liquid surrounds the bare copper stranded conductor for uniform cooling, with high heat dissipation efficiency and good heat dissipation effect; at the same time, it can increase the conductor cross-sectional area, thereby increasing the conductor current carrying capacity and improving the cable power.

[0004] In order to achieve the above object, the utility model provides a new type of high-power cable, including:

[0005] Bare stranded copper conductor;

[0006] a helically stranded bare copper conductor, helically stranded on the bare copper stranded conductor;

[0007] An outer insulating layer, sleeved on the spirally stranded bare copper conductor;

[0008] A liquid cooling cavity with a spiral structure is formed between the outer insulating layer and the spirally stranded bare copper conductor, and is used for circulating cooling liquid.

[0009] Optionally, there are multiple spirally stranded bare copper conductors, and the multiple spirally stranded bare copper conductors are twisted together.

[0010] Optionally, a spiral groove is opened on the inner side of the outer insulating layer, and the spiral groove and the multiple mutually twisted spirally twisted bare copper conductors are staggered and distributed along the axis direction of the bare copper twisted conductor.

[0011] Optionally, two supporting bare copper conductors are spirally twisted on the bare copper stranded conductor.

[0012] Optionally, the two supporting bare copper conductors are respectively arranged on both sides of the spirally stranded bare copper conductor.

[0013] Optionally, the diameter of the supporting bare copper conductor is smaller than the diameter of the spirally stranded bare copper conductor.

[0014] Optionally, the pitch of the spirally stranded bare copper conductor is greater than the diameter of the spirally stranded bare copper conductor.

[0015] Optionally, the pitch of the spirally stranded bare copper conductor is 18-20D.

[0016] Optionally, the outer insulation layer is a low-smoke, halogen-free, flame-retardant polyolefin insulation layer.

[0017] The beneficial effects of the utility model are: a stable spiral-shaped liquid cooling cavity is formed by supporting the outer insulating layer through the spirally stranded bare copper conductor to allow the cooling liquid to circulate, so that the cooling liquid can surround the bare copper stranded conductor for uniform cooling, with high heat dissipation efficiency and good heat dissipation effect; at the same time, the spirally stranded bare copper conductor can be used as a conductor together with the bare copper stranded conductor to increase the conductor cross-sectional area, thereby increasing the conductor current carrying capacity and improving the cable power.

[0018] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a new type of high-power cable shown in an embodiment of the utility model;

[0020] Figure 2 This is a schematic structural cross-sectional view of a new type of high-power cable shown in one embodiment of the utility model;

[0021] Figure 3 This is a schematic structural cross-sectional view of a new type of high-power cable shown in another embodiment of the utility model;

[0022] Figure 4 This is a schematic structural cross-sectional view of a new type of high-power cable shown in another embodiment of the utility model;

[0023] In the figure: 1- bare copper stranded conductor, 2- spirally stranded bare copper conductor, 3- outer insulation layer, 4- liquid cooling cavity, 5- spiral groove, 6- supporting bare copper conductor. DETAILED DESCRIPTION

[0024] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0027] See also Figure 1 and Figure 2 A novel high-power cable shown in a preferred embodiment of the present application comprises a bare copper stranded conductor 1, a helically stranded bare copper conductor 2 and an outer insulating layer 3, wherein the helically stranded bare copper conductor 2 is helically stranded on the bare copper stranded conductor 1. The outer insulating layer 3 is sleeved on the helically stranded bare copper conductor 2. A liquid cooling cavity 4 of a helical structure is formed between the outer insulating layer 3 and the bare copper stranded conductor 1 for circulating cooling liquid.

[0028] According to the scheme of the embodiment of the utility model, the cable will generate heat when working, and the dense space makes it difficult for the cable to dissipate heat. After the cable generates heat, if the fault is not eliminated in time, the cable will continue to be powered on and run continuously, which will cause insulation thermal breakdown, causing the cable to short-circuit and trip, which may cause fire in serious cases, affecting the service life of the cable and the safety of life and property. At the same time, due to the increasing demand for electric energy, the power of conventional cables is slightly insufficient. In order to solve the heat dissipation problem, some existing cables will set a straight pore space parallel to the copper wire between the built-in copper wire and the insulation layer for the flow of coolant, so that the cable is directly immersed in the coolant, and the heat is taken away by the flow of the coolant. However, after the coolant flows through this pore space, the coolant can only take away the heat from the vicinity of the pore space for heat dissipation, and cannot evenly surround the copper wire for heat dissipation, so that the cable has the problem of uneven hot and cold, which affects the service life of the cable. Therefore, the present application supports the outer insulation layer 3 through the spirally stranded bare copper conductor 2 to form a stable spiral structure liquid cooling cavity 4 for the circulation of cooling liquid, so that the cooling liquid can surround the bare copper stranded conductor 1 for uniform cooling, with high heat dissipation efficiency and good heat dissipation effect; at the same time, the spirally stranded bare copper conductor 2 can be used as a conductor together with the bare copper stranded conductor 1 to increase the conductor cross-sectional area, thereby increasing the conductor current carrying capacity and improving the cable power.

[0029] The following is a detailed description with specific embodiments:

[0030] The pitch of the helically stranded bare copper conductor 2 is greater than the diameter of the helically stranded bare copper conductor 2, and the pitch of the helically stranded bare copper conductor 2 is 18-20D. The pitch of the helically stranded bare copper conductor 2 is greater than the diameter of the helically stranded bare copper conductor 2, which can increase the liquid circulation space of the liquid cooling cavity 4 of the spiral structure. When the cooling liquid flows through the liquid cooling cavity 4, the contact area between the cooling liquid and the bare copper stranded conductor 1 and the outer insulation layer 3 can be increased, which is more conducive to uniform heat dissipation of the cable and improves the heat dissipation efficiency and effect.

[0031] The outer insulating layer 3 is a low-smoke halogen-free flame-retardant polyolefin insulation layer. The outer insulating layer 3 adopts a low-smoke halogen-free flame-retardant polyolefin insulation layer with high temperature resistance and anti-aging, thereby extending the service life of the cable during cyclic heating in use, and has a long service life and overload capacity. Even if the cable is overloaded and burned, there is very little smoke and no harmful and corrosive gases. It fully meets the requirements of environmental protection and flame retardancy, and has the advantages of environmental protection and safety.

[0032] In this embodiment, a bare copper stranded conductor 1 is twisted with a helically twisted bare copper conductor 2 with a pitch of 18D-20D, and a layer of low-smoke halogen-free flame-retardant polyolefin outer insulation layer 3 is extruded from the bare copper stranded conductor 1 and the helically twisted bare copper conductor 2 as a whole outer layer by extruding a tube. The bare copper stranded conductor 1 itself is formed by twisting, and has a relatively large structural strength. The helically twisted bare copper conductor 2 helically twisted on the bare copper stranded conductor 1 can make the helically twisted bare copper conductor 2 support the outer insulation layer 3 to form a stable liquid cooling cavity 4. The liquid cooling cavity 4 can circulate circulating liquid to take away the heat generated by the internal bare copper stranded conductor 1 when working, and reduce the cable temperature rise under the same current, so that a higher current can be achieved when the bare copper stranded conductor 1 reaches the highest working temperature, thereby increasing the cable power. At the same time, the helically twisted bare copper conductor 2 can be used as a conductor together with the bare copper stranded conductor 1 to increase the conductor cross-sectional area, thereby increasing the conductor current carrying capacity and improving the cable power.

[0033] See also Figure 3 In another embodiment, the novel high-power cable comprises a bare copper stranded conductor 1, a plurality of mutually twisted spirally twisted bare copper conductors 2 and an outer insulating layer 3, wherein the plurality of mutually twisted spirally twisted bare copper conductors 2 are spirally twisted on the bare copper stranded conductor 1. The outer insulating layer 3 is sleeved on the plurality of mutually twisted spirally twisted bare copper conductors 2. The plurality of mutually twisted spirally twisted bare copper conductors 2 support the outer insulating layer 3 to form a liquid cooling cavity 4 of a spiral structure for circulating cooling liquid. A spiral groove 5 is provided on the inner side of the outer insulating layer 3, and the spiral groove 5 and the plurality of mutually twisted spirally twisted bare copper conductors 2 are staggeredly distributed along the axial direction of the bare copper stranded conductor 1.

[0034] Specifically, there are two spirally stranded bare copper conductors 2, and the two spirally stranded bare copper conductors 2 are twisted together.

[0035] By providing two mutually twisted spirally twisted bare copper conductors 2, the structural strength of the cable can be further increased, and the bare copper twisted conductor 1 can be used as a conductor to further increase the conductor cross-sectional area, thereby increasing the conductor current carrying capacity and improving the cable power. By providing spiral grooves 5 that are staggered with the two mutually twisted spirally twisted bare copper conductors 2, the liquid flow space of the spiral structured liquid cooling cavity 4 can be further increased. When the cooling liquid flows through the liquid cooling cavity 4, the contact area between the cooling liquid and the bare copper twisted conductor 1 and the outer insulation layer 3 can be further increased, and the efficiency and effect of uniform heat dissipation of the cable can be further improved.

[0036] See also Figure 4In another embodiment, the novel high-power cable comprises a bare copper stranded conductor 1, a helically stranded bare copper conductor 2, two supporting bare copper conductors 6 and an outer insulating layer 3, wherein the helically stranded bare copper conductor 2 is helically stranded on the bare copper stranded conductor 1. The outer insulating layer 3 is sleeved on the helically stranded bare copper conductor 2. A liquid cooling cavity 4 with a helical structure is formed between the outer insulating layer 3 and the bare copper stranded conductor 1 for circulating cooling liquid. The two supporting bare copper conductors 6 are helically stranded on the bare copper stranded conductor 1, and the two supporting bare copper conductors 6 are respectively arranged on both sides of the helically stranded bare copper conductor 2.

[0037] The two supporting bare copper conductors 6 are spirally twisted on the bare copper stranded conductor 1 and are respectively arranged on both sides of the spirally twisted bare copper conductor 2, which can support the spirally twisted bare copper conductor 2 and improve the overall structural strength of the cable. At the same time, the two supporting bare copper conductors 6 can also cooperate with the spirally twisted bare copper conductor 2 and the bare copper stranded conductor 1 as conductors, further increasing the conductor cross-sectional area, thereby increasing the conductor current carrying capacity and improving the cable power.

[0038] Specifically, the diameter of the supporting bare copper conductor 6 is smaller than the diameter of the spirally stranded bare copper conductor 2. The smaller the diameter of the supporting bare copper conductor 6 is, the closer the contact between the spirally stranded bare copper conductor 2 and the bare copper stranded conductor 1 is, and the better the effect of increasing the overall structural strength of the cable is.

[0039] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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 this specification.

[0040] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A new type of high-power cable, characterized in that: include: Bare stranded copper conductor; a helically stranded bare copper conductor, helically stranded on the bare copper stranded conductor; An outer insulating layer, sleeved on the spirally stranded bare copper conductor; A liquid cooling cavity with a spiral structure is formed between the outer insulating layer and the bare copper stranded conductor for circulating cooling liquid.

2. A new type of high-power cable according to claim 1, characterized in that: There are a plurality of the spirally stranded bare copper conductors, and the plurality of the spirally stranded bare copper conductors are twisted together.

3. A new type of high-power cable according to claim 2, characterized in that: A spiral groove is provided on the inner side of the outer insulating layer, and the spiral groove and the plurality of mutually twisted spirally twisted bare copper conductors are staggeredly distributed along the axis direction of the bare copper twisted conductor.

4. A new type of high-power cable according to claim 1, characterized in that: Two supporting bare copper conductors are spirally twisted on the bare copper stranded conductor.

5. A new type of high-power cable according to claim 4, characterized in that: The two supporting bare copper conductors are respectively arranged on both sides of the spirally stranded bare copper conductor.

6. A new type of high-power cable according to claim 5, characterized in that: The diameter of the supporting bare copper conductor is smaller than the diameter of the helically stranded bare copper conductor.

7. A new type of high-power cable according to claim 1, characterized in that: The pitch of the helically stranded bare copper conductor is greater than the diameter of the helically stranded bare copper conductor.

8. A new type of high-power cable according to claim 7, characterized in that: The pitch of the spirally stranded bare copper conductor is 18-20D.

9. A new type of high-power cable according to claim 1, characterized in that: The outer insulating layer is a low-smoke, halogen-free, flame-retardant polyolefin insulating layer.

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