CN203276949U - Rated voltage 8.7KV or 10KV and below Coal mine with aluminum alloy conductor XLPE insulated power cable - Google Patents

Abstract

The utility model relates to an aluminum alloy conductor cross-linked polyethylene insulated power cable for coal mines with a rated voltage of 8.7KV or 10KV and below. A XLPE insulated power cable with an aluminum alloy conductor for coal mines with a rated voltage of 8.7KV or 10KV and below, including a cable core and an outer sheath wrapping the cable core, and the cable core is stranded by a single or multiple insulated cores The insulated wire core includes a conductor, a conductor shielding layer, an insulating layer, an insulating shielding layer and a copper tape shielding layer in sequence from inside to outside, and the conductor is an aluminum alloy conductor. It can be seen from the above technical scheme that the conductor core of the utility model adopts the aluminum alloy conductor core for cables, which solves the shortcomings of the pure aluminum core in flexibility, creep resistance and corrosion resistance, and has low cost and good electrical conductivity. good.

Description

Rated voltage 8.7KV or 10KV and below Coal mine with aluminum alloy conductor XLPE insulated power cable

technical field

The utility model relates to the field of electric wires and cables, in particular to an aluminum alloy conductor XLPE insulated power cable for coal mines with a rated voltage of 8.7KV or 10KV and below.

Background technique

Due to the complex environment, harsh working conditions, frequent movement, and short service life of cables used in coal mines, the area where gas accumulates is very dangerous. Abrasion resistance and resistance to external tensile properties are very high. At the same time, the country's copper resources are becoming increasingly scarce and are on the verge of scarcity. Aluminum has good electrical conductivity, light weight, and low price. It is the general trend to replace copper with aluminum, but the mechanical properties and corrosion resistance of ordinary aluminum core cables are poor.

Utility model content

The purpose of the utility model is to provide an aluminum alloy conductor cross-linked polyethylene insulated power cable with a rated voltage of 8.7KV or 10KV and below for coal mines. The cable has good conductive effect and low cost.

In order to achieve the above purpose, the utility model adopts the following technical solutions: an aluminum alloy conductor cross-linked polyethylene insulated power cable with a rated voltage of 8.7KV or 10KV and below for coal mines, including a cable core and an outer sheath wrapping the cable core, The cable core is twisted from a single or multiple insulated cores, and the insulated cores sequentially include a conductor, a conductor shielding layer, an insulating layer, an insulating shielding layer and a copper tape shielding layer from the inside to the outside. The conductor mentioned above is an aluminum alloy conductor.

The outer sheath of the utility model comprises a wrapping layer, an inner sheath layer, an armor layer and an outer sheath layer which are sequentially coated on the outside of the cable core.

The conductor of the utility model is formed by twisting a plurality of aluminum alloy monofilaments, the tensile strength of the aluminum alloy monofilaments is greater than or equal to 90MPa, the elongation at break is greater than or equal to 10%, and the volume resistivity is less than or equal to 0.028264Ω·m/ mm ² .

The armored layer of the utility model is a steel wire armored layer or a steel tape armored layer.

The outer sheath layer of the utility model is a polyvinyl chloride outer sheath layer.

The inner sheath layer of the utility model is a polyvinyl chloride inner sheath layer.

The insulating layer of the utility model is a cross-linked polyethylene insulating layer.

It can be seen from the above technical scheme that the conductor core of the utility model adopts the aluminum alloy conductor core for cables, which solves the shortcomings of the pure aluminum core in flexibility, creep resistance and corrosion resistance, and has low cost and good electrical conductivity. good.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the second embodiment of the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

Embodiment one:

As shown in Figure 1, a XLPE insulated power cable with an aluminum alloy conductor for coal mines with a rated voltage of 8.7KV or 10KV and below is a multi-core XLPE insulated power cable, including a cable core and an outer sheath wrapping the cable core. Layer 2, the cable core is twisted from a single or multiple insulated cores 1, and the insulated core 1 includes a conductor 11, a conductor shielding layer 12, an insulating layer 13, an insulating shielding layer 14 and a copper tape shielding layer from the inside to the outside. Layer 15, conductor 11 is an aluminum alloy conductor.

Further, the conductor 11 is formed by twisting a plurality of aluminum alloy monofilaments, the tensile strength of the aluminum alloy monofilaments is greater than or equal to 90MPa, the elongation at break is greater than or equal to 10%, and the volume resistivity is less than or equal to 0.028264Ω·m/ mm ² . The utility model can achieve the same conductive effect as copper by increasing the cross-sectional area of the conductor, has better bending performance, is light in weight, and is easy to install, and can be especially applied to narrow places in mines.

Further, the outer sheath 2 includes a wrapping layer 21 , an inner sheath layer 22 , an armor layer 23 and an outer sheath layer 24 which are sequentially coated on the outside of the cable core.

Furthermore, the armor layer 23 is a steel wire armor layer or a steel tape armor layer, that is, the armor layer can adopt a steel wire armor layer or a steel tape armor layer, and the armor layer 23 can make the cable have better resistance Compression and impact resistance can better improve the mechanical strength of the cable, and it is easy to bend, corrosion-resistant, light in weight, and easy to install. It is suitable for the requirements of different places in coal mines.

Furthermore, the outer sheath layer 24 is a polyvinyl chloride outer sheath layer.

Furthermore, the inner sheath layer 22 is a polyvinyl chloride inner sheath layer.

Furthermore, the insulating layer 13 is a cross-linked polyethylene insulating layer.

The utility model is illustrated by taking a three-core cross-linked polyethylene insulated power cable as an example. In actual use, multiple insulated wire cores can be arranged according to the situation and requirements of the site.

The utility model can also be applied to an aluminum alloy cross-linked polyethylene insulated power cable with a rated voltage of 3.6/6V for coal mines, and its structure is the same as that of the first embodiment.

Embodiment two:

As shown in Figure 2, a XLPE insulated power cable with an aluminum alloy conductor for coal mines with a rated voltage of 8.7KV or 10KV and below is a single-core XLPE insulated power cable, and the cable includes conductors 11 in sequence from the inside to the outside. , Conductor shielding layer 12, insulating layer 13, insulating shielding layer 14, copper tape shielding layer 15 and outer sheath layer 24.

The above-mentioned embodiments are only described to the preferred implementation of the utility model, and are not limited to the scope of the utility model. Various modifications and improvements made should fall within the scope of protection determined by the claims of the utility model.

Claims (7)

1. a rated voltage 8.7KV or 10KV and following colliery aluminium alloy conductor power cable with cross-linked polyethylene insulation, it is characterized in that: the outer jacket (2) that comprises cable core and parcel cable core, described cable core by single or thoroughly do away with stranded the forming of edge core (1) more, described insulated wire cores (1) comprises conductor (11), conductor shield (12), insulating barrier (13), insulation screen (14) and copper strip shielding layer (15) from the inside to the outside successively, and described conductor (11) is aluminium alloy conductor.

2. power cable according to claim 1, it is characterized in that: described outer jacket (2) comprises lapping layer (21), inner restrictive coating (22), armour (23) and the external sheath layer (24) that is coated on successively the cable core outside.

3. power cable according to claim 1, it is characterized in that: described conductor (11) is closed by many aluminium alloy single skein silks and forms, the tensile strength of described aluminium alloy monofilament is more than or equal to 90MPa, and elongation at break is more than or equal to 10%, and specific insulation is less than or equal to 0.028264 Ω m/mm ²

4. power cable according to claim 2, it is characterized in that: described armour (23) is wire armoring layer or steel-tape armouring layer.

5. power cable according to claim 2, it is characterized in that: described external sheath layer (24) is the polyvinyl chloride external sheath layer.

6. power cable according to claim 2, it is characterized in that: described inner restrictive coating (22) is the polyvinyl chloride inner sheath layer.

7. power cable according to claim 1 is characterized in that: described insulating barrier (13) is crosslinked polyetylene insulated layer.

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