Aluminum alloy core high tensile environmental protection low temperature resistant lightning protection system cable

Abstract

The utility model provides a kind of cable for aluminium alloy core high tensile environmental protection low temperature resistant lightning protection system, including cable conductor, braided reinforcing layer, insulating layer and sheath layer, the cable conductor is AA8030 series rare earth aluminium alloy wire and stranded steel wire composition, with excellent electrical performance and anti creep property, simultaneously again with excellent tensile property;The braided reinforcing layer is composite aramid yarn material, and its mechanical strength is high, can significantly improve the transverse mechanical property of cable;The insulating layer is ethylene-propylene rubber material, compared with ordinary crosslinked polyethylene, with better electrical performance, anti-aging property, low temperature resistance and the like;The sheath layer is composed of rubber material, with the ability of resistance to extreme low temperature, with better electrical performance and wear resistance simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of cables, and in particular relates to a high tensile strength, environmentally friendly, low-temperature resistant lightning protection cable with an aluminum alloy core. Background Technology

[0002] For cables used in lightning protection systems, due to the special nature of their operating environment, the cables need to withstand lightning current as well as various tensile forces generated during equipment operation. This makes the cable conductors prone to breakage due to stress, thereby reducing the cable's service life.

[0003] Cable conductors are typically made of aluminum alloy. In existing technologies, aluminum alloys are made by adding alloying elements such as copper, iron, and magnesium to aluminum, which greatly improves the mechanical properties of aluminum alloy conductors and avoids the problems of low elongation, poor creep resistance, and poor flexibility of pure aluminum conductors. However, the above-mentioned aluminum alloy products still cannot meet the tensile strength requirements of special cables for lightning protection systems. Therefore, it is necessary to propose a cable that is resistant to mechanical tension and has good conductivity to meet the current use of lightning protection systems. Utility Model Content

[0004] In view of this, the present invention aims to propose a high tensile strength, environmentally friendly, and low-temperature resistant cable for a lightning protection system with an aluminum alloy core, in order to solve the problem that the existing aluminum alloy cables have poor tensile strength and cannot meet the requirements for use in lightning protection systems.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows: A high tensile strength, environmentally friendly, and low-temperature resistant lightning protection cable with an aluminum alloy core includes a cable conductor composed of steel rope and multiple alloy wires twisted together, and the cable conductor is sequentially fitted with a braided reinforcement layer, an insulation layer, an isolation layer, and a sheath layer from the inside out.

[0006] Furthermore, the alloy wire is made of AA8030 rare earth aluminum alloy wire.

[0007] Furthermore, the steel rope consists of one strand, with multiple alloy wires intertwined around its perimeter.

[0008] Furthermore, the material of the woven reinforcing layer is composite aramid yarn.

[0009] Furthermore, both the insulating layer and the sheath layer are made of rubber.

[0010] Furthermore, the insulating layer is made of ethylene propylene rubber.

[0011] Furthermore, the isolation layer is composed of a longitudinally wrapped polyester film.

[0012] Compared with existing technologies, the aluminum alloy core high tensile strength environmentally friendly low temperature resistant lightning protection cable of this utility model has the following beneficial effects: (1) The aluminum alloy core high tensile environmental protection low temperature lightning protection system cable described in this utility model uses a composite conductor composed of stranded steel wire and AA8030 rare earth aluminum alloy wire. The conductor has excellent electrical properties and excellent longitudinal tensile properties, which can enable the cable to operate safely even when subjected to a large longitudinal tensile force.

[0013] (2) The aluminum alloy core high tensile environmental protection low temperature lightning protection system cable of this utility model has a braided reinforcing layer composed of composite aramid yarn, which is uniformly braided on the surface of the metal conductor to improve the transverse force capacity of the conductor. The longitudinally wrapped polyester film material can prevent the insulation and sheath from sticking together. When subjected to external force, the insulation and sheath can be subjected to force independently without affecting each other, thereby making the cable operation more stable. Attached Figure Description

[0014] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 This is a schematic diagram of the cross-sectional structure of a high tensile strength, environmentally friendly, and low-temperature resistant lightning protection cable with an aluminum alloy core, as described in an embodiment of this utility model.

[0015] Explanation of reference numerals in the attached figures: 1-Steel rope; 2-Alloy wire; 3-Braided reinforcing layer; 4-Insulation layer; 5-Insulation layer; 6-Sheath layer. Detailed Implementation

[0016] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0017] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] like Figure 1 As shown, a high tensile strength, environmentally friendly, and low-temperature resistant lightning protection cable with an aluminum alloy core includes a cable conductor composed of a steel rope 1 and multiple alloy wires 2 twisted together. In this embodiment, there is only one steel rope 1, which is a twisted steel wire rope. The multiple alloy wires 2 are all located around the steel rope 1 and are twisted together. The cable conductor is sequentially fitted with a braided reinforcing layer 3, an insulation layer 4, an isolation layer 5, and a sheath layer 6 from the inside out. The alloy wires 2 are made of AA8030 rare earth aluminum alloy wire 2, the braided reinforcing layer 3 is made of composite aramid yarn, the sheath layer 6 is made of rubber, the insulation layer 4 is made of ethylene propylene rubber, and the isolation layer 5 is composed of longitudinally wrapped polyester film.

[0021] The cable conductor is composed of AA8030 series rare earth aluminum alloy wire 2 and stranded steel wire, which has excellent electrical properties and creep resistance, as well as excellent tensile strength. The braided reinforcing layer 3 is a composite aramid yarn material with high mechanical strength, which can significantly improve the transverse mechanical properties of the cable. The insulation layer 4 is made of ethylene propylene rubber material, which has better electrical properties, anti-aging properties, and low-temperature resistance compared with ordinary cross-linked polyethylene. The sheath layer 6 is composed of rubber material, which has the ability to withstand extreme low temperatures, and also has better electrical properties and wear resistance.

[0022] The use of AA8030 series rare-earth aluminum alloy wire significantly improves the mechanical properties of aluminum alloy conductors, avoiding the problems of low elongation, poor creep resistance, and poor flexibility inherent in pure aluminum conductors, thus increasing the connection reliability of cable systems. During conductor stranding, it is used together with stranded steel wires, with the steel wires acting as central reinforcing wires, effectively increasing the conductor's longitudinal tensile strength. A layer of composite aramid yarn is braided around the stranded conductor; due to the excellent mechanical properties of aramid, it effectively improves the stability of the cable conductor under lateral stress.

[0023] Vulcanized rubber material is used as the insulation layer 4 and sheath layer 6 of the cable. Due to its better electrical performance, anti-aging performance, low temperature resistance, and wear resistance, it can ensure the safe and effective operation of the cable in harsh environments. At the same time, a layer of longitudinally wrapped polyester film material is used to prevent the insulation layer 4 and sheath layer 6 from sticking together and keep them in a separate state, so that each layer can bear the force independently and reduce the mutual influence.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-tensile-strength, environmentally friendly, low-temperature resistant cable for a lightning protection system with an aluminum alloy core, characterized in that: It includes a cable conductor consisting of a steel rope (1) and multiple alloy wires (2) twisted together, and the cable conductor is fitted with a braided reinforcing layer (3), an insulation layer (4), an isolation layer (5) and a sheath layer (6) from the inside out.

2. The aluminum alloy core high tensile strength environmentally friendly low temperature resistant lightning protection cable according to claim 1, characterized in that: The alloy wire (2) is made of AA8030 rare earth aluminum alloy wire (2).

3. The aluminum alloy core high tensile strength environmentally friendly low temperature resistant lightning protection cable according to claim 1, characterized in that: The steel rope (1) consists of one piece, and multiple alloy wires (2) are arranged around the steel rope (1), with the multiple alloy wires (2) twisted together.

4. The aluminum alloy core high tensile strength environmentally friendly low temperature resistant lightning protection cable according to claim 1, characterized in that: The material of the braided reinforcing layer (3) is composite aramid yarn.

5. The aluminum alloy core high tensile strength environmentally friendly low temperature resistant lightning protection cable according to claim 1, characterized in that: Both the insulation layer (4) and the sheath layer (6) are made of rubber.

6. The aluminum alloy core high tensile strength environmentally friendly low temperature resistant lightning protection cable according to claim 1, characterized in that: The insulating layer (4) is made of ethylene propylene rubber.

7. The aluminum alloy core high tensile strength environmentally friendly low temperature resistant lightning protection cable according to claim 1, characterized in that: The isolation layer (5) is composed of longitudinally wrapped polyester film.

8. The aluminum alloy core high tensile strength environmentally friendly low temperature resistant lightning protection cable according to claim 1, characterized in that: The steel rope (1) is a stranded steel wire rope.

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