CN206040224U - XLPE insulated composite cable - Google Patents

Abstract

The utility model relates to an insulating composite cable of crosslinked polyethylene, insulating composite cable of crosslinked polyethylene includes many cable cores, the conductor of cable core forms for the transposition of stranded anaerobic copper core, the conductor is outward around the fire -resistant mica layer of package, around package pyrocondensation wrapping band outside the fire -resistant mica layer, pyrocondensation wrapping band wraps up the insulating layer outward, many the cable core forms around the fire -retardant band layer of package behind the cable harness around the non - metal reinforced core at middle part, fire -retardant band layer outside from interior to exterior wraps up shielding layer, inner liner, armor, fireproof cotton layer, oversheath in proper order. The utility model discloses solid structure, the fire resistance is good, the insulation is effectual, has good comprehensive properties, has improved life.

Description

XLPE insulated composite cable

technical field

The utility model relates to the field of power cables, in particular to a cross-linked polyethylene insulated composite cable.

Background technique

With the advancement of modern technology, cables are widely used due to their simple structure, easy process and low cost. Existing cables are mostly made of PVC insulating material. Although this material has insulating function, its mechanical properties and fire resistance are low, and it is easy to burn. After burning, it will produce halogen acid corrosion gas, which not only causes the cable to short circuit, but also endangers people's lives. Property security.

Utility model content

Aiming at the deficiencies of the prior art, the utility model provides a cross-linked polyethylene insulated composite cable with high comprehensive performance, firm structure and good flame retardancy.

The technical solution adopted by the utility model to solve the technical problem is: the cross-linked polyethylene insulated composite cable includes a plurality of cable cores, and the conductors of the cable cores are formed by twisting multiple strands of oxygen-free copper wire cores. The conductor is wrapped with a fire-resistant mica layer, and the fire-resistant mica layer is wrapped with a heat-shrinkable covering tape, and the heat-shrinkable covering tape is wrapped with an insulating layer, and a plurality of the cable cores surround the non-metallic reinforcing core in the middle to form a cable bundle Then wrap the flame-retardant tape layer, and the outer side of the flame-retardant tape layer is sequentially wrapped with the shielding layer, the inner lining layer, the armor layer, the fireproof cotton layer, and the outer sheath from the inside to the outside.

In a preferred embodiment of the cross-linked polyethylene insulated composite cable provided by the utility model, the gap between the cable cores is filled with non-woven fabric, and a filling rope is also arranged in the non-woven fabric.

In a preferred embodiment of the cross-linked polyethylene insulated composite cable provided by the utility model, the insulating layer and the outer sheath are both wrapped with cross-linked polyethylene.

In a preferred embodiment of the XLPE insulated composite cable provided by the utility model, the shielding layer is an aluminum-plastic composite tape.

In a preferred embodiment of the XLPE insulated composite cable provided by the utility model, the armor layer is a thin steel wire armor layer.

Compared with the prior art, the beneficial effects of the cross-linked polyethylene insulated composite cable provided by the utility model are:

1. The cable core is supported by the non-metallic reinforcing core, which strengthens the structural strength of the cable and improves the reliability of the cable;

2. The heat-shrinkable coating tape wrapped around the cable core has good insulation, waterproof, anti-corrosion, and flame-retardant functions, ensuring the safety and reliability of the cable core;

3. The insulating layer and outer sheath used are all made of cross-linked polyethylene material for insulation protection, which improves its mechanical protection performance, insulation, heat resistance and corrosion resistance;

4. The utility model has firm structure, good flame retardancy, good insulation effect, excellent comprehensive performance and improved service life.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work, wherein:

Fig. 1 is a structural schematic diagram of the cross-section of the cross-linked polyethylene insulated composite cable provided by the utility model.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to FIG. 1 , which is a structural schematic diagram of the cross-section of the cross-linked polyethylene insulated composite cable provided by the utility model.

The cross-linked polyethylene insulated composite cable 1 includes three cable cores 11, the conductor 12 of the cable core 11 is formed by twisting multiple strands of oxygen-free copper wire cores, and the conductor 12 is wrapped with a refractory mica layer 13, which has Excellent high temperature resistance and flame retardancy, the heat-shrinkable coating tape 14 is wrapped around the fire-resistant mica 13 layers, the heat-shrinkable coating tape 14 is wrapped with a cross-linked polyethylene insulating layer 15, and the three cable cores 11 A cable bundle is formed around the non-metallic reinforcing core 16 in the middle, and then the flame-retardant tape layer 17 is wrapped. The outer side of the flame-retardant tape layer 17 wraps the shielding layer 18, inner lining layer 19, armor layer 20, A fireproof cotton layer 21 and an outer sheath 22, the fireproof cotton layer 21 is wrapped around the armor layer 20, the outer sheath 22 is a cross-linked polyethylene sheath, and the gap between the cable cores 11 is filled The non-woven fabric 23 has the characteristics of moisture-proof, flame-retardant, and light weight, and improves the mechanical protection performance of the cable. The non-woven fabric 23 is also provided with a filling rope 24 to make the cable structure stable and reliable.

Preferably, the shielding layer 18 is an aluminum-plastic composite tape, and its shielding property is used to reduce the interference of external radio waves on the cable.

Preferably, the armor layer 20 is a thin steel wire armor layer, which can effectively resist external mechanical damage to the cable and improve the service life of the cable.

The beneficial effects of the cross-linked polyethylene insulated composite cable provided by the utility model are:

1. The cable core 11 is supported by the non-metallic reinforcing core 16, which strengthens the structural strength of the cable and improves the reliability of the cable;

2. The heat-shrinkable coating tape 14 wrapped around the cable core 11 has good insulation, waterproof, anti-corrosion, and flame-retardant functions, ensuring the safety and reliability of the cable core 11;

3. The insulating layer 15 and the outer sheath 22 used are all made of cross-linked polyethylene material for insulation and protection, which improves their mechanical protection performance, insulation, heat resistance and corrosion resistance;

4. The utility model has firm structure, good flame retardancy, good insulation effect, excellent comprehensive performance and improved service life.

The above descriptions are only examples of the present utility model, and are not intended to limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the utility model description, or directly or indirectly used in other related technologies Fields are all included in the scope of patent protection of the utility model in the same way.

Claims (5)

1. A cross-linked polyethylene insulated composite cable, comprising a plurality of cable cores, characterized in that: the conductor of the cable core is twisted with multiple strands of oxygen-free copper wire cores, and the conductor is wrapped around a refractory mica layer , the fire-resistant mica layer is wrapped with a heat-shrinkable coating tape, the heat-shrinkable coating tape is wrapped with an insulating layer, and a plurality of the cable cores surround the non-metallic reinforcing core in the middle to form a cable bundle and then wrapped with a flame-retardant tape layer, the outside of the flame retardant tape layer wraps the shielding layer, the inner lining layer, the armor layer, the fireproof cotton layer, and the outer sheath sequentially from the inside to the outside. 2. The cross-linked polyethylene insulated composite cable according to claim 1, characterized in that: the gap between the cable cores is filled with non-woven fabric, and a filling rope is also arranged in the non-woven fabric. 3. The cross-linked polyethylene insulated composite cable according to claim 1, characterized in that: the insulating layer and the outer sheath are both wrapped with cross-linked polyethylene. 4. The XLPE insulated composite cable according to claim 1, wherein the shielding layer is an aluminum-plastic composite tape. 5. The XLPE insulated composite cable according to claim 1, characterized in that: the armor layer is a fine steel wire armor layer.