Light cable

Abstract

The utility model discloses a light cable, which comprises main wire cores, a filling layer, a wrapping layer, an armor layer and an outer sheath, and is structurally characterized by further comprising a supporting layer. The filling layer comprises filling strips, and the two main wire cores and the two filling strips are twisted into a cable and then wrapped with a non-woven fabric wrapping tape to form a wrapping layer. And the supporting layer is extruded outside the wrapping layer by adopting a polyvinyl chloride material. And the armor layer is woven outside the supporting layer by adopting steel wires. And the outer sheath is extruded outside the armor layer by adopting a polyvinyl chloride material.

Description

Technical Field

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

[0002] The transmission of electric energy, together with power transformation, distribution and consumption, constitute the overall function of the power system. Through power transmission, power plants and load centers are connected, so that the development and utilization of electric energy can transcend geographical limitations. Compared with the transmission of other energy sources, power transmission has low losses, high efficiency, flexibility, convenience, easy regulation and less environmental pollution; power transmission can also connect power plants in different locations to implement peak and valley regulation. Power transmission is an important manifestation of the superiority of electric energy utilization. In modern society, it is an important energy artery. Cables are widely used. Among them, there is a connecting cable for fixed equipment in mines. The cable needs to be able to support several meters of its own weight. Therefore, it is not only required to have good support, but also to be lightweight. Chinese patent document CN205282120U discloses an aluminum alloy high temperature resistant fireproof cable, which includes a cable core composed of a plurality of aluminum alloy conductors 1 twisted together, and each of the aluminum alloy conductors 1 is wrapped with a fireproof and waterproof insulation layer 2, and the gap between the fireproof and waterproof insulation layer 2 and the aluminum alloy conductor 1 is filled with an explosion-proof material layer 3, and the outer layer of the cable core is sequentially wrapped with a high temperature resistant wrapping layer 4, an armored shielding layer 5 and an outer sheath layer 6 from the inside to the outside. The cable uses an aluminum alloy conductor 1, which is conducive to the lightweight of the cable, but the support is insufficient. Utility Model Content

[0003] The purpose of the utility model is to provide a simple structure and good supporting performance.

[0004] The basic technical scheme for achieving the purpose of the utility model is: a lightweight cable, including a main core, a filling layer, a wrapping layer, an armor layer and an outer sheath, and its structural characteristics are: it also includes a support layer. The filling layer includes a filling strip, and two main cores and two filling strips are twisted into a cable and then wrapped with a non-woven wrapping tape to form a wrapping layer. The support layer is made of polyvinyl chloride material and is extruded outside the wrapping layer. The armor layer is made of steel wire braided outside the support layer. The outer sheath is made of polyvinyl chloride material and is extruded outside the armor layer.

[0005] Furthermore, in order to reduce weight, the main line core is provided with a conductor and an insulating layer in sequence from the inside to the outside along its respective radial directions; the conductor is formed by twisting and pressing a number of aluminum alloy metal wires with the same single wire diameter, and the insulating layer is extruded on the outside of the conductor by polyvinyl chloride material.

[0006] Furthermore, in order to maintain the roundness and lightness of the cable, the filling strip is a foam filling strip.

[0007] The utility model has the following beneficial effects: (1) The lightweight cable of the utility model has a simple structure, is provided with a support layer, and uses an armor layer as a grounding conductor. The armor layer is woven outside the support layer and can meet the requirement of supporting a certain length of its own weight. (2) The lightweight cable of the utility model adopts 1350 aluminum alloy as a conductor, which can effectively transmit current and reduce power loss, and is conducive to the lightweight of the cable. (3) The insulation layer and outer sheath of the lightweight cable of the utility model are both made of polyvinyl chloride, which has good insulation performance and can effectively isolate the current to prevent current leakage or leakage. Moreover, polyvinyl chloride has good acid, alkali, salt and corrosion resistance in general industrial environments. (4) The lightweight cable of the utility model adopts a foam filling strip, which can not only reduce the weight of the cable but also ensure the roundness of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic structural diagram of the lightweight cable of the utility model.

[0009] The reference numerals in the accompanying drawings are:

[0010] Main line core 1, conductor 1-1, insulation layer 1-2, filling layer 2, filling strip, wrapping layer 3, supporting layer 4, armor layer 5, outer sheath 6. DETAILED DESCRIPTION

[0011] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to specific embodiments and in combination with the accompanying drawings. Similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, in the description of the utility model, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0012] (Example 1)

[0013] See Figure 1 The lightweight cable of the utility model comprises a main core 1, a filling layer 2, a wrapping layer 3, a supporting layer 4, an armor layer 5 and an outer sheath 6.

[0014] There are two main line cores 1, and the two main line cores 1 have the same structure. The two main line cores 1 are provided with a conductor 1-1 and an insulating layer 1-2 in sequence from the inside to the outside along their respective radial directions.

[0015] The conductor 1-1 is formed by twisting and pressing a plurality of aluminum alloy wires with the same single wire diameter, and this embodiment uses 1350 aluminum alloy. The insulating layer 1-2 is made of polyvinyl chloride (PVC) material, and the polyvinyl chloride material is extruded on the outside of the conductor 1-1.

[0016] The filling layer 2 includes filling strips. There are two filling strips, and the two filling strips have the same structure. They are both foamed filling strips. The filling strips are directly purchased from existing products. The filling strips are non-hygroscopic filling materials, using polyolefin as the main material, and adding certain plasticizers and flame retardants, and are made by foaming, plasticizing and extruding. The density is small, which can effectively reduce the manufacturing cost and weight of the cable.

[0017] After the two main cores 1 and the two filling strips are twisted into a cable, they are wrapped with a non-woven wrapping tape to form a wrapping layer 3. The wrapping overlap rate is 15% to 25%.

[0018] The supporting layer 4 is made of polyvinyl chloride (PVC) material, and the polyvinyl chloride material is extruded and wrapped outside the wrapping layer 3 .

[0019] The armor layer 5 is woven with steel wires outside the support layer 4, with a weaving coverage rate of 80% to 82%.

[0020] The outer sheath 6 is made of polyvinyl chloride (PVC) material, and the polyvinyl chloride material is extruded outside the armor layer 5 .

[0021] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lightweight cable, comprising a main core (1), a filling layer (2), a wrapping layer (3), an armor layer (5) and an outer sheath (6), characterized in that: It also includes a supporting layer (4); the filling layer (2) includes filling strips, and the two main cores (1) and the two filling strips are twisted into a cable and then wrapped with a non-woven wrapping tape to form a wrapping layer (3); the supporting layer (4) is extruded with polyvinyl chloride outside the wrapping layer (3); the armor layer (5) is braided with steel wire outside the supporting layer (4); and the outer sheath (6) is extruded with polyvinyl chloride material outside the armor layer (5).

2. The lightweight cable according to claim 1, characterized in that: The main line core (1) is provided with a conductor (1-1) and an insulating layer (1-2) in sequence from the inside to the outside along its respective radial directions; the conductor (1-1) is formed by twisting and pressing a plurality of aluminum alloy metal wires with the same single wire diameter, and the insulating layer (1-2) is formed by extruding a polyvinyl chloride material on the outside of the conductor (1-1).

3. The lightweight cable according to claim 1, characterized in that: The filling strip is a foam filling strip.

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