Highly flame-resistant, heat-insulating and environmentally friendly cable with a copper core

Abstract

Highly flame-retardant, heat-insulating and environmentally friendly cable with a copper core, wherein an insulating sheath (2) is permanently provided on the outside of the copper core (1), and a protective layer (3) is permanently provided on the outside of the insulating sheath (2), wherein four cavities (4) are arranged in the protective layer (3) in a uniform circular arrangement, wherein each of the four cavities (4) is filled with a flame retardant consisting of magnesium hydroxide powder, wherein a reinforcing layer (5) is permanently provided on the outside of the protective layer (3), and a hardening layer (6) is permanently provided on the outside of the reinforcing layer (5), wherein a thermal insulation layer (7) is permanently provided on the outside of the hardening layer (6), and wherein four protective units are provided on the outside of the copper core (1) in a uniform circular arrangement.

Description

[0001] The invention relates to the technical field of electrical cables, in particular to a highly flame-retardant, heat-insulating and environmentally friendly cable with a copper core.

[0002] Cables are conductors that transmit electrical energy, and their conductor is mainly copper;

[0003] Existing power cables have poor flame retardant and heat insulation properties in use, the cable cannot effectively prevent the spread of fire when overloaded, and the temperature of the cable itself is easily affected by the outside world when used in a high temperature environment, so it needs to be improved;

[0004] Therefore, it is necessary to develop a highly flame-retardant, heat-insulating and environmentally friendly copper core cable.

[0005] To achieve this object, the present invention provides a highly flame-retardant, heat-insulating and environmentally friendly copper core cable to solve the problem in the technical background.

[0006] To achieve the above-mentioned objective, the invention provides the following technical solutions: A highly flame-resistant, heat-insulating, and environmentally friendly copper-core cable, characterized in that it comprises a copper core, an insulating sheath being rigidly provided on the outside of the copper core, and a protective layer being rigidly provided on the outside of the insulating sheath, wherein four cavities are arranged in the protective layer, which are evenly distributed in a circle, wherein the interior of each of the four cavities is filled with a flame retardant consisting of magnesium hydroxide powder, wherein a reinforcing layer is rigidly provided on the outside of the protective layer, and a hardening layer is rigidly provided on the outside of the reinforcing layer, wherein a thermal insulation layer is rigidly provided on the outside of the hardening layer, wherein four protective units are provided on the outside of the copper core,which are evenly distributed in a circle.,

[0007] The insulating sheath is preferably made of cross-linked polyolefin insulating material XLPO.

[0008] The protective layer is preferably made of TPR.

[0009] The reinforcement layer is preferably made of silicone rubber.

[0010] The hardening layer is preferably made of PE.

[0011] Preferably the thermal insulation layer is made of polyimide foam.

[0012] Preferably, several toughening rods, all made of polyurethane, are firmly embedded inside the hardening layer.

[0013] Preferably, said protective component comprises a heat conduction band which is firmly connected to the copper core, and wherein the heat conduction band passes through the insulating shell and the protective layer and is firmly connected to them, wherein the upper side of the heat conduction band is firmly connected to the inner wall of the reinforcing layer, wherein a plurality of through holes are provided on the upper side of the heat conduction band, which through holes are distributed from front to back, and wherein a plurality of the through holes are arranged on the reinforcing layer, the hardening layer and the thermal insulation layer.

[0014] The heat conduction tape is preferably made of thermally conductive silicone.

[0015] The invention has the following advantageous effects: In this invention, four cavities are provided in the protective layer, and the four cavities are filled with magnesium hydroxide as a flame retardant, so that when the cables burn, the magnesium hydroxide is heated and a decomposition reaction occurs, releasing crystalline water, which then absorbs heat to lower the ambient temperature, at the same time, the water vapor dilutes the oxygen, which in turn plays the role of flame retardant, so that the spread of fire can be effectively prevented and the flame retardant effect is better;

[0016] In this invention, the outermost side of the cable is provided with a heat insulation layer made of polyimide foam, which can prevent the external temperature from being transmitted to the cable during use, so that the inherent temperature of the cable is less likely to be affected by the outside world during use and the heat insulation properties of the cable can be improved.

[0017] To better explain the technical solutions in the embodiments or prior art of the invention, a brief description of the accompanying drawings used in describing the embodiments or prior art is provided below. It is understood that the accompanying drawings in the following description are only exemplary, and other embodiments of the drawings can be obtained by expanding the provided drawings by a person with ordinary skill in the art, without requiring creative work. Fig. Figure 1 shows a schematic representation of the overall structure of the present invention. Fig. Figure 2 shows a main sectional view of the present invention. Fig. 3 shows an enlarged view of A in Fig. 2 of the present invention. Fig. Figure 4 shows a cross-sectional side view of the present invention;

[0018] As in Fig.1 to 4, a highly flame-retardant, heat-insulating, and environmentally friendly copper core cable in this invention comprises a copper core 1, an insulating sheath 2 is fixedly provided on the outside of the copper core 1, and a protective layer 3 is fixedly provided on the outside of the insulating sheath 2, in which four cavities 4 are arranged uniformly in a circle, the inside of each of the four cavities 4 being filled with a flame retardant made of magnesium hydroxide powder, in which a reinforcing layer 5 is fixedly provided on the outside of the protective layer 3, and a hardening layer 6 is fixedly provided on the outside of the reinforcing layer 5, and a heat-insulating layer 7 is fixedly provided on the outside of the hardening layer 6, in which four protective units are provided uniformly in a circle on the outside of the copper core 1;

[0019] the insulating shell 2 is made of cross-linked polyolefin insulating material XLPO, the protective layer 3 is made of TPR, the reinforcing layer 5 is made of silicone rubber, the reinforcing layer 6 is made of PE, and the thermal insulation layer 7 is made of polyimide foam, and inside the curing layer 6, a plurality of toughening rods 8 are firmly embedded, all made of polyurethane;

[0020] In this embodiment, four cavities 4 are provided in the protective layer 3, and the four cavities 4 are filled with magnesium hydroxide as a flame retardant, so that when the cables burn, the magnesium hydroxide is heated and a decomposition reaction occurs, releasing crystalline water, which then absorbs heat to lower the ambient temperature, at the same time, the water vapor dilutes the oxygen, which in turn plays the role of flame retardant, so that the spread of fire can be effectively prevented and the flame retardant effect is better;

[0021] In order to achieve the purpose of dissipating heat from the copper core 1, the device is realized with the following technical solution: the protection unit comprises a heat conduction tape 9 which is firmly connected to the copper core 1, wherein the heat conduction tape 9 passes through the insulating sleeve 2 and the protective layer 3 and is firmly connected to them, wherein the upper side of the heat conduction tape 9 is firmly connected to the inner wall of the reinforcing layer 5, wherein on the upper side of the heat conduction tape 9 there are provided a plurality of through holes 10 which are distributed from front to back, and wherein a plurality of the through holes 10 are arranged on the reinforcing layer 5, the hardening layer 6 and the thermal insulation layer 7, wherein the heat conduction tape 9 is made of thermally conductive silicone and the protection unit is designed to dissipate heat from the copper core 1.

[0022] The method of using the invention is as follows: when the cable is used in a high temperature environment, a heat insulation layer 7 made of polyimide foam on the outside of the cable can prevent the outside temperature from being transmitted to the cable when it is in use, so the temperature of the cable during use is less susceptible to external influences, so that the heat insulation performance of the cable can be improved;

[0023] In addition, the cable is provided with a silicone rubber reinforcement layer 5, a PE reinforcement layer 6, and a polyurethane toughness bar 8 in the reinforcement layer 6, thus improving the bending strength of this cable, which in turn increases its service life to a certain extent. Furthermore, the insulating sheath 2 is made of cross-linked polyolefin insulating material XLPO and the protective layer 3 is made of TPR, which can make the insulating ability of this power cable avoid the phenomenon of leakage.

[0024] when the cable is overloaded and catches fire during operation, the insulating sheath 2 and the protective layer 3 will burn, and the magnesium hydroxide in the four cavities 4 will be burned by the fire, so the magnesium hydroxide is decomposed by heat, releasing crystal water, which in turn absorbs heat to reduce the ambient temperature, in addition, the water vapor dilutes the oxygen, which in turn acts as a flame retardant, so that the spread of fire can be effectively prevented and the flame retardant effect is better;

[0025] In addition, when using this cable, the four heat conduction bands 9 can absorb the heat from the copper core 1 when the copper core 1 generates heat, and then the heat is dissipated through a plurality of through holes 10, so that it can have the effect of heat dissipation. In addition, the through hole 10 has the shape of a narrow end and a wide end, similar to the shape of a venturi tube, this accelerates the flow of heat through the wide end into the narrow end and outwards, thus not only ensuring that the internal heat is dissipated smoothly, but also preventing external heat from penetrating into the inside of the cable through the through hole 10, so that normal heat dissipation is ensured. List of reference symbols 1 copper core 2 insulating cover 3 protective layer 4 cavity 5 Reinforcement layer 6 Hardening layer 7 Thermal insulation layer 8 Toughness Bar 9 Heat conduction tape 10 through hole

Claims

[1] A highly flame-retardant, heat-insulating and environmentally friendly cable with a copper core, wherein an insulating sheath (2) is fixedly provided on the outside of the copper core (1), and a protective layer (3) is fixedly provided on the outside of the insulating sheath (2), wherein four cavities (4) are arranged in the protective layer (3) and are evenly distributed in a circle, wherein the inside of each of the four cavities (4) is filled with a flame retardant made of magnesium hydroxide powder, wherein a reinforcing layer (5) is fixedly provided on the outside of the protective layer (3), and a hardening layer (6) is fixedly provided on the outside of the reinforcing layer (5), wherein a heat-insulating layer (7) is fixedly provided on the outside of the hardening layer (6), wherein four protective units are provided on the outside of the copper core (1) and are evenly distributed in a circle. [2] Highly flame-retardant, heat-insulating and environmentally friendly copper core cable according to claim 1, characterized by that the insulating sheath (2) is made of cross-linked polyolefin insulating material XLPO. [3] Highly flame-retardant, heat-insulating and environmentally friendly copper core cable according to claim 1 or 2, characterized by that the protective layer (3) is made of TPR. [4] Highly flame-resistant, heat-insulating and environmentally friendly copper core cable according to any one of the preceding claims, characterized by that the reinforcing layer (5) is made of silicone rubber. [5] Highly flame-resistant, heat-insulating and environmentally friendly copper core cable according to any one of the preceding claims, characterized by that the hardening layer (6) is made of PE. [6] Highly flame-resistant, heat-insulating and environmentally friendly copper core cable according to any one of the preceding claims, characterized bythat the thermal insulation layer (7) is made of polyimide foam. [7] Highly flame-resistant, heat-insulating and environmentally friendly copper core cable according to any one of the preceding claims, characterized by that inside the hardening layer (6) several toughness rods (8) are firmly embedded, all made of polyurethane. [8] Highly flame-resistant, heat-insulating and environmentally friendly copper core cable according to any one of the preceding claims, characterized byin that the protective unit comprises a heat conduction band (9) which is firmly connected to the copper core (1), and wherein the heat conduction band (9) passes through the insulating sleeve (2) and the protective layer (3) and is firmly connected to these, wherein the upper side of the heat conduction band (9) is firmly connected to the inner wall of the reinforcing layer (5), wherein a plurality of through-holes (10) are provided on the upper side of the heat conduction band (9), which are distributed from front to back, and wherein a plurality of the through-holes (10) are arranged on the reinforcing layer (5), the hardening layer (6) and the thermal insulation layer (7). [9] Highly flame-resistant, heat-insulating and environmentally friendly copper core cable according to claim 8, characterized by that the heat conduction band (9) is made of thermally conductive silicone.

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