CN220933805U - Multilayer cable - Google Patents

Abstract

The utility model relates to the technical field of multi-layer cables, and provides a multi-layer cable which comprises a plurality of cable cores distributed according to circumference; the fixing layer is sleeved on the cable cores, and a compaction gap is formed between the fixing layer and the cable cores; the filling pieces are arranged in the compaction gaps and used for filling and fixing a plurality of cable cores; the protection group layer is sleeved on the fixed layer and is used for protecting the cable. Through the technical scheme, the problems of insufficient tensile strength, poor fire resistance and short service life of the cable in the related technology are solved.

Description

Multilayer cable

Technical Field

The utility model relates to the technical field of multi-layer cables, in particular to a multi-layer cable.

Background

The cable comprises a local telephone cable, a television cable, an optical cable and the like; the mouse is mostly caught at the dark corners of underground river buildings, cable tunnels, grooves, cable shafts and the like become the best sites for the mouse to perch, so that the cables are frequently bitten by the mouse, the bite is one of the main hazards of the cables at present, the damage to the cables caused by the bite is mainly caused by the fact that the outer sheath is worn to cause the cable water inlet, power failure, communication interruption and other conditions, the damage to the mouse is difficult to remove, difficulty is brought to maintenance work, the tensile strength of some cables at present is insufficient, and the fire resistance performance is poor, so that the service life of the cables is not long.

Disclosure of utility model

The utility model provides a multilayer cable, which solves the problems of insufficient tensile strength, poor fire resistance and short service life of the cable in the related technology.

The technical scheme of the utility model is as follows:

A multi-layer cable, comprising:

A plurality of cable cores distributed according to circumference;

The fixing layers are sleeved on the cable cores, and compression gaps are formed between the fixing layers and the cable cores;

The filling pieces are arranged in the compaction gaps and used for filling and fixing the cable cores;

the protection group layer is sleeved on the fixed layer and is used for protecting the cable.

As a further technical solution, the cable core includes:

A conductor;

And the insulating layer is sleeved on the conductor.

As a further technical scheme, the number of the cable cores is five.

As a further technical solution, the insulating layer is made of irradiation crosslinked polyethylene.

As a further technical scheme, the fixing layer is made of non-woven fabrics.

As a further technical scheme, the filling piece is made of kraft paper.

As a further technical solution, the protection group layer includes:

The inner protection layer is sleeved on the fixed layer;

the outer protective layer is sleeved on the inner protective layer.

As a further technical scheme, the inner protective layer adopts aluminum with pricking lines.

As a further technical scheme, the outer protective layer adopts a polyvinyl chloride outer protective sleeve.

The working principle and the beneficial effects of the utility model are as follows:

In order to solve the problems of insufficient tensile strength and poor fire resistance of cables and short service life of the cables in the related art, the cable of the scheme is of a multi-layer structure, wherein the cable cores are conductors wrapped with insulating layers, five cable cores are wrapped and fixed through fixing layers, due to the fact that the middle conductors of the cable cores are made of materials, a certain compression gap exists after the fixing layers are wrapped, the cable is prevented from being shaken in the middle of the cable cores to cause the service life of the cable to be reduced, the compression piece is filled in the compression gap, meanwhile, a protection layer is arranged outside the cable, and the cable of the scheme is further improved in practicality and durability and has high practical value.

Drawings

The utility model will be described in further detail with reference to the drawings and the detailed description.

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a top view of the present utility model.

In the figure: 1. the cable comprises a cable core, 2, conductors, 3, an insulating layer, 4, a fixing layer, 5, a compression gap, 6, a filling piece, 7, a protection group layer, 8, an inner protection layer, 9 and an outer protection layer.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

As shown in fig. 1-2, the present embodiment provides a multi-layer cable, including:

A plurality of cable cores 1 distributed according to circumference;

The fixed layer 4 is sleeved on the cable cores 1, and compression gaps 5 are formed between the fixed layer 4 and the cable cores 1;

The filling pieces 6 are arranged in the compaction gaps 5, and the filling pieces 6 are used for filling and fixing a plurality of cable cores 1;

The protection group layer 7 is sleeved on the fixed layer 4 and is used for protecting cables.

In this embodiment, for the cable tensile strength among the solution correlation technique is insufficient, fire resistance is poor, lead to the cable life-span not long problem, the cable of this scheme has multilayer structure, wherein cable core 1 is for the conductor 2 of parcel with insulating layer 3, and wrap up fixedly with cable core 1 through fixed layer 4, because the middle conductor 2 material reason of cable core 1, there is certain compression clearance 5 after the fixed layer 4 parcel, for avoiding the cable to appear rocking inside and lead to the life-span decline of cable, this scheme is still through packing in compression clearance 5 to compress tightly the piece, simultaneously for avoiding the cable to receive other outer damage, this scheme still is equipped with protection group layer 7 in the outside, through this kind of form, the practicality and the durability of the cable of this scheme have obtained further improvement, have very high practical value.

Further, the cable core 1 includes:

A conductor 2;

And the insulating layer 3 is sleeved on the conductor 2.

In this embodiment, in order to further enhance the insulation anti-interference capability of the cable, the cable core 1 in this scheme adopts a form of having a conductor 2 in the center and an insulating layer 3 coated on the outside, by which the anti-interference capability in this scheme is further improved.

Further, the number of the cable cores 1 is five.

Further, the insulating layer 3 is made of irradiation crosslinked polyethylene.

In this embodiment, the conductor 2 in this solution is covered with the insulating layer 3 made of irradiation crosslinked polyethylene, by which the cable in this solution can prevent steam, gas and flame from entering the electrical equipment connected with the cable, and is suitable for places with explosion hazard, and is suitable for various explosion-proof equipment, etc.

Further, the fixing layer 4 is made of nonwoven fabric.

In this embodiment, in order to avoid scattering of the middle cable core 1, and further to cause mutual collision to cause damage to the cable core 1, and further to cause the whole cable to fail, the present scheme is to fix and wrap up the middle five cable cores 1, wherein the fixing layer 4 for wrap up and fix is made of non-woven fabrics.

Further, the filler 6 is made of kraft paper.

In this embodiment, for further fixing the middle cable core 1, the packing member 6 is adopted in this scheme to pack and fix the compression gap 5 between the fixed layer 4 and the cable core 1, and especially, the packing member 6 in this scheme adopts to make by kraft paper, has made moisture resistance and stability of this scheme obtain further promotion through such a way, has high practical value.

Further, the protective group layer 7 includes:

the inner protective layer 8 is sleeved on the fixed layer 4;

The outer protective layer 9 is sleeved on the inner protective layer 8.

In this embodiment, for further improvement cable's life and applicable environment, protection group layer 7 of this scheme designs to bilayer design, and inner sheath 8 plays intensity support and the effect that prevents the rat bite to the cable, and outer sheath 9 plays anticorrosive anti-corrosion's effect.

Further, the inner sheath 8 is made of aluminum with a pricking pattern.

In this embodiment, the inner protection layer 8 in this scheme adopts the pricking line aluminium, and when utilizing the material characteristic of pricking line aluminium, the fixed effect of design is played to the cable, has avoided gnawing of external worm mouse to bite.

Further, the outer sheath 9 is a polyvinyl chloride outer sheath.

In this embodiment, since the metal tends to have high corrosiveness, the outer sheath 9 is coated on the outer portion of the inner sheath 8, and the outer sheath 9 made of polyvinyl chloride also has high corrosion resistance when the cable is buried in the ground.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (9)

1. A multi-layered cable, comprising:

A plurality of cable cores (1) distributed along the circumference;

The fixing layers (4) are sleeved on the cable cores (1), and compression gaps (5) are formed between the fixing layers (4) and the cable cores (1);

The filling pieces (6) are arranged in the compaction gaps (5), and the filling pieces (6) are used for filling and fixing the cable cores (1);

And the protection group layer (7) is sleeved on the fixed layer (4) and is used for protecting cables.

2. A multi-layered cable according to claim 1, wherein said cable core (1) comprises:

A conductor (2);

And the insulating layer (3) is sleeved on the conductor (2).

3. A multi-layered cable according to claim 2, wherein a number of said cable cores (1) is five.

4. A multilayer cable according to claim 2, wherein said insulating layer (3) is made of radiation cross-linked polyethylene.

5. A multilayer cable according to claim 1, wherein said anchoring layer (4) is made of non-woven fabric.

6. A multilayer cable according to claim 1, wherein said filler (6) is made of kraft paper.

7. A multilayer cable according to claim 1, wherein said protective group layer (7) comprises:

The inner protection layer (8) is sleeved on the fixed layer (4);

The outer protective layer (9) is sleeved on the inner protective layer (8).

8. A multilayer cable according to claim 7, wherein said inner sheath (8) is made of aluminum with a prick pattern.

9. A multilayer cable according to claim 7, wherein said outer sheath (9) is a polyvinyl chloride outer sheath.