Copper-aluminum composite cable

Abstract

The utility model discloses a copper aluminum composite cable, comprising a cable core, the cable core is composed of a wire core, a second insulating layer and a filling layer, the filling layer is arranged in a gap between the second insulating layer and the wire core, the outside of the cable core is provided with a composite shielding layer, the outside of the composite shielding layer is provided with an armor layer, and the outside of the armor layer is provided with a sheath layer. A composite fireproof layer is arranged outside the armor layer, a composite wear-resistant layer is arranged outside the composite fireproof layer, the wire core is composed of a conductor and a first insulating layer, the conductor is formed by twisting a plurality of aluminum wires, the aluminum wires are wrapped by a copper layer, the first insulating layer is arranged outside the conductor in an extruded mode, and the first insulating layer is arranged outside the conductor in an extruded mode. The structure solves the problems that the cable core is easy to ignite by flame and the protection performance of the cable is not good enough.

Description

TECHNICAL FIELD

[0001] The utility model relates to composite cable technical field, concretely is a copper aluminum composite cable. BACKGROUND

[0002] Aluminum composite cable is a cable composed of copper and aluminum, which usually takes aluminum core wire as the main body, and is coated with a certain proportion of copper layer outside, and through a specific processing technology, copper and aluminum are tightly combined to form a bimetallic composite material. Copper aluminum composite cable is widely used in communication, power and other fields due to its superior performance and cost advantage. As an innovative wire and cable product, copper aluminum composite cable combines the advantages of copper and aluminum, and has superior performance and cost advantage.

[0003] For example, the Chinese patent "A composite cable" with the announcement number CN202976966U includes conductor, insulation layer and sheath from inside to outside in turn, and further includes optical cable between the insulation layer and the sheath. The optical cable is twisted with the conductor through the insulation layer, the outer surface of the optical cable is wrapped with the second insulation layer, and the outer surface of the second insulation layer is wrapped with the second sheath.

[0004] The above prior art can realize the use of aluminum composite cable, but in actual use, on the one hand, the cable core is easy to be ignited by flame. Usually, after the cable suffers fire, the flame will ignite the cable core, resulting in increased risk of cable short circuit and fire. On the other hand, the protection performance of the cable is not good enough. Usually, the skin of the cable is exposed to the air, so that the factors in the environment will affect the skin of the cable, thereby shortening the service life of the cable. Therefore, it does not meet the existing demand. In view of this, we propose a copper aluminum composite cable. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a copper aluminum composite cable to solve the problems of easy ignition of cable core by flame and poor protection performance of cable in the above background technology.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a copper aluminum composite cable, comprising a cable core, the cable core is composed of a wire core, a second insulation layer and a filling layer, the filling layer is arranged in the gap between the second insulation layer and the wire core, the outer portion of the cable core is provided with a composite shielding layer, the outer portion of the composite shielding layer is provided with an armored layer, the outer portion of the armored layer is provided with a composite fireproof layer, and the outer portion of the composite fireproof layer is provided with a composite wear-resistant layer.

[0007] Preferably, the wire core is composed of a conductor and a first insulation layer, the conductor is twisted by a plurality of aluminum wires, the outer portion of the aluminum wire is coated with a copper layer, and the first insulation layer is extruded and arranged outside the conductor.

[0008] Preferably, the composite fireproof layer is composed of a fireproof outer layer, a fireproof reinforcing layer and a fireproof base layer, the fireproof base layer is wrapped around the outside of the armored layer, the fireproof reinforcing layer is extruded around the outside of the fireproof base layer, and the fireproof outer layer is sprayed on the outside of the fireproof reinforcing layer.

[0009] Preferably, the composite wear-resistant layer is composed of a wear-resistant outer layer, a wear-resistant reinforcing layer and a wear-resistant inner layer, the wear-resistant inner layer is extruded around the outside of the fireproof outer layer, the wear-resistant reinforcing layer is extruded around the outside of the wear-resistant inner layer, and the wear-resistant outer layer is extruded around the outside of the wear-resistant reinforcing layer.

[0010] Preferably, the armored layer is wrapped around the outside of the composite shielding layer.

[0011] Preferably, the composite shielding layer is composed of a shielding outer layer and a shielding inner layer, the shielding inner layer is extruded around the outside of the second insulating layer, and the shielding outer layer is extruded around the outside of the shielding inner layer.

[0012] Preferably, the filler layer adopts an alkali-free glass yarn material.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] (1) The utility model discloses a composite fireproof layer can improve the fireproof performance of the cable core, the fireproof outer layer can prevent the flame from directly contacting the cable core, thereby slowing down the spreading speed of the fire, and the flame and heat can be effectively prevented from spreading to the surrounding environment, the fireproof outer layer can prevent the fire from expanding and reduce the fire loss, the fireproof reinforcing layer can prevent the moisture from invading the cable, and the cable core can be protected from the influence of the damp environment, the fireproof reinforcing layer effectively isolates the external moisture, ensures the dryness of the internal environment of the cable, and thus the normal working state of the cable core is maintained, and the fireproof base layer can prevent the armored layer from directly contacting the composite fireproof layer, the edge of the armored layer is sharp, and the armored layer can pierce the composite fireproof layer when the cable is bent or vibrated, and the fireproof base layer can reduce the piercing risk as a soft isolation.

[0015] (2) The utility model discloses a composite wear-resistant layer can improve the protection performance of the cable, the wear-resistant outer layer can reduce the friction coefficient in the scene of high-frequency movement, dragging or contact with rough surface, reduce the wear of the outer sheath, and avoid the exposure of the cable core, meanwhile, the flexibility of the wear-resistant outer layer can reduce the damage of the sheath caused by the mechanical stress concentration, the wear-resistant reinforcing layer can effectively block the ultraviolet rays in the sunlight, the cable skin can be embrittled and cracked due to the photo-oxidation reaction, meanwhile, the direct damage of environmental factors to the internal cable core can be reduced, the insulation resistance or dielectric strength can be prevented from being reduced, and the risk of electric leakage or short circuit can be reduced, and the wear-resistant inner layer can reduce the influence of external stress such as vibration, stretching and bending on the cable core, and help prevent the cable core from being broken or damaged due to mechanical stress, thereby prolonging the service life of the cable core.

[0016] (3)The armored layer can improve the bending resistance of the cable core, the armored layer can increase the tensile strength, compressive strength and lateral pressure resistance of the cable, so that the cable can withstand greater external force, at the same time, the metal armored layer can form an electromagnetic shielding layer, reduce the influence of external electromagnetic interference on the internal conductor, reduce the damage of external force and environmental influence, so that the failure rate of the cable under complex working conditions is significantly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure perspective view of the utility model;

[0018] Figure 2 It is the internal structure section view of the utility model;

[0019] Figure 3 It is the composite fireproof layer partial enlarged view of the utility model;

[0020] Figure 4 It is the composite wear-resistant layer partial enlarged view of the utility model.

[0021] In the drawing: 1, cable core;2, wire core;3, conductor;4, first insulating layer;5, second insulating layer;6, composite shielding layer;601, shielding outer layer;602, shielding inner layer;7, armored layer;8, composite fireproof layer;801, fireproof outer layer;802, fireproof reinforced layer;803, fireproof base layer;9, composite wear-resistant layer;901, wear-resistant outer layer;902, wear-resistant reinforced layer;903, wear-resistant inner layer;10, filling layer. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0023] Please refer to Figures 1-4The utility model provides an embodiment: a kind of copper-aluminum composite cable, including cable core 1, cable core 1 is composed of wire core 2, second insulating layer 5 and filling layer 10, filling layer 10 is arranged in the gap between second insulating layer 5 and wire core 2, the outside of cable core 1 is provided with composite shielding layer 6, the outside of composite shielding layer 6 is provided with armored layer 7, the outside of armored layer 7 is provided with composite fireproof layer 8, the outside of composite fireproof layer 8 is provided with composite wear layer 9, wire core 2 is composed of conductor 3 and first insulating layer 4, conductor 3 is twisted by multiple aluminium wires, and the outside of aluminium wire is covered with copper layer, and first insulating layer 4 is extruded and packed in the outside of conductor 3, composite shielding layer 6 is composed of shielding outer layer 601 and shielding inner layer 602, shielding inner layer 602 is extruded and packed in the outside of second insulating layer 5, shielding outer layer 601 is extruded and packed in the outside of shielding inner layer 602, filling layer 10 uses alkali-free glass yarn material, and first insulating layer 4 and second insulating layer 5 all use low smoke halogen-free polyolefin material.

[0024] Please refer to Figure 2 And Figure 3 Composite fireproof layer 8 is composed of fireproof outer layer 801, fireproof reinforcing layer 802 and fireproof base layer 803, fireproof base layer 803 is wrapped and packed in the outside of armored layer 7, fireproof reinforcing layer 802 is extruded and packed in the outside of fireproof base layer 803, and fireproof outer layer 801 is sprayed on the outside of fireproof reinforcing layer 802, wherein fireproof outer layer 801 is coated with fireproof paint, fireproof reinforcing layer 802 is made of polypropylene material, and fireproof base layer 803 is made of glass fiber material, so as to improve the fireproof performance of cable core 1 by composite fireproof layer 8.

[0025] Please refer to Figure 2 And Figure 4 Composite wear layer 9 is composed of wear-resistant outer layer 901, wear-resistant reinforcing layer 902 and wear-resistant inner layer 903, wear-resistant inner layer 903 is extruded and packed in the outside of fireproof outer layer 801, wear-resistant reinforcing layer 902 is extruded and packed in the outside of wear-resistant inner layer 903, and wear-resistant outer layer 901 is extruded and packed in the outside of wear-resistant reinforcing layer 902, wherein wear-resistant outer layer 901 is made of nylon resin material, wear-resistant reinforcing layer 902 is made of neoprene, and wear-resistant inner layer 903 is made of polyethylene foam plastic, so as to improve the protection performance of cable by composite wear layer 9.

[0026] Please refer to Figure 1 And Figure 2 Armored layer 7 is wrapped and packed in the outside of composite shielding layer 6, wherein armored layer 7 is made of metal steel wire, so as to improve the bending resistance of cable by armored layer 7.

[0027] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than by the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A copper-aluminum composite cable comprising a core (1), characterized in that: The cable core (1) is composed of a wire core (2), a second insulation layer (5) and a filling layer (10), the filling layer (10) is arranged in the gap between the second insulation layer (5) and the wire core (2), the outer part of the cable core (1) is provided with a composite shielding layer (6), the outer part of the composite shielding layer (6) is provided with an armored layer (7), the outer part of the armored layer (7) is provided with a composite fireproof layer (8), and the outer part of the composite fireproof layer (8) is provided with a composite wear-resistant layer (9).

2. The copper-aluminum composite cable of claim 1, wherein: The wire core (2) is composed of a conductor (3) and a first insulation layer (4), the conductor (3) is twisted by a plurality of aluminum wires, the outer part of the aluminum wire is coated with a copper layer, and the first insulation layer (4) is extruded and arranged outside the conductor (3).

3. A copper-aluminum composite cable according to claim 2, characterized in that: The composite fireproof layer (8) is composed of a fireproof outer layer (801), a fireproof reinforcing layer (802) and a fireproof base layer (803), the fireproof base layer (803) is wrapped outside the armored layer (7), the fireproof reinforcing layer (802) is extruded and arranged outside the fireproof base layer (803), and the fireproof outer layer (801) is sprayed outside the fireproof reinforcing layer (802).

4. The copper-aluminum composite cable of claim 3, wherein: The composite wear-resistant layer (9) is composed of a wear-resistant outer layer (901), a wear-resistant reinforcing layer (902) and a wear-resistant inner layer (903), the wear-resistant inner layer (903) is extruded and arranged outside the fireproof outer layer (801), the wear-resistant reinforcing layer (902) is extruded and arranged outside the wear-resistant inner layer (903), and the wear-resistant outer layer (901) is extruded and arranged outside the wear-resistant reinforcing layer (902).

5. A copper-aluminum composite cable according to claim 4, characterized in that: The armored layer (7) is wrapped outside the composite shielding layer (6).

6. A copper-aluminum composite cable according to claim 5, characterized in that: The composite shielding layer (6) is composed of a shielding outer layer (601) and a shielding inner layer (602), the shielding inner layer (602) is extruded and arranged outside the second insulation layer (5), and the shielding outer layer (601) is extruded and arranged outside the shielding inner layer (602).

7. A copper-aluminum composite cable according to claim 6, characterized in that: The filling layer (10) adopts an alkali-free glass yarn material.

Images