CN220041416U - Polyethylene insulation flexible cable - Google Patents

Abstract

The utility model discloses a polyethylene insulated flexible cable, which comprises a polyethylene insulating layer, a crosslinked polyethylene outer sheath, an inner insulating sleeve and a conductor, wherein the crosslinked polyethylene outer sheath is connected with the polyethylene insulating layer through a first connecting strip, a plurality of anti-interference shielding layers are arranged on the inner side of the polyethylene insulating layer, the inner insulating sleeve is arranged on the middle part of the inner side of the anti-interference shielding layer through a second connecting strip, a plurality of stranded conductors are arranged on the middle part of the inner insulating sleeve, and a flame-retardant filling rope is arranged between the polyethylene insulating layer and the anti-interference shielding layer. The crosslinked polyethylene outer sheath and the polyethylene insulating layer are connected through the first connecting strip, so that a hollow cavity is formed between the crosslinked polyethylene outer sheath and the polyethylene insulating layer, the designed crosslinked polyethylene outer sheath can improve the softness of the cable, the flexibility of the cable is greatly improved, and the material cost can be reduced; the inner side of the anti-interference shielding layer is connected with the inner insulating sleeve through the second connecting strip, and the toughness of the conductor is improved by the conductor cladding mode.

Description

Polyethylene insulation flexible cable

Technical Field

The utility model relates to the related field of flexible cables, in particular to a polyethylene insulated flexible cable.

Background

The cable is made of one or more mutually insulated conductors and wires covered by an insulating protective layer, and is laid underground, in the air and the like, and the cable generally consists of three parts, namely a conductor, an insulating layer and a protective layer.

In order to enable the cable to bear larger mechanical external force action, the cable in the current market adopts metal materials such as steel belts, steel wires and aluminum belts as an armor protection layer of the cable, so that the problem of insulation damage caused by the fact that the cable is subjected to the mechanical external force is solved, but the cable taking the metal materials as the protection layer is well known, the cable flexibility cannot be kept at all, the existing flexible cable is mainly composed of flexible wires and an outer sheath, and when the cable is used, the cable is flexible and needs to be bent frequently, the cable core is bent too much to cause breakage, and the tensile pulling performance is poor.

Disclosure of Invention

The utility model aims to provide a polyethylene insulated flexible cable which solves the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a polyethylene insulation flexible cable, includes polyethylene insulating layer, crosslinked polyethylene oversheath, interior insulating sheath and conductor, link up through first connecting strip between crosslinked polyethylene oversheath and the polyethylene insulating layer, first connecting strip follows cable longitudinal extension, the inboard of polyethylene insulating layer is equipped with a plurality of anti-interference shielding layers, the inboard middle part of anti-interference shielding layer is equipped with interior insulating sheath through the second connecting strip, the middle part of interior insulating sheath is equipped with many stranded conductors.

In a further embodiment, a flame-retardant filling rope is arranged between the polyethylene insulating layer and the anti-interference shielding layer, and the outer diameter of the anti-interference shielding layer is tangential to the inner diameter of the polyethylene insulating layer.

In a further embodiment, the anti-interference shielding layers are three in number, the anti-interference shielding layers are uniformly arranged on the inner sides of the polyethylene insulating layers, and reinforcing ribs are arranged in the middle of the three anti-interference shielding layers.

In a further embodiment, the reinforcing ribs are composed of steel wire ropes and aramid yarns wrapped outside the steel wire ropes.

In a further embodiment, a hollow cavity is arranged among the crosslinked polyethylene outer sheath, the polyethylene insulating layer and the first connecting strip, and functional materials can be added into the hollow cavity.

In a further embodiment, one end of the first connecting strip is integrally arranged with the crosslinked polyethylene outer sheath, and the other end of the first connecting strip is bonded and connected with the outer side of the polyethylene insulating layer.

Compared with the prior art, the utility model has the beneficial effects that:

the crosslinked polyethylene outer sheath and the polyethylene insulating layer are connected through the first connecting strip, so that a hollow cavity is formed between the crosslinked polyethylene outer sheath and the polyethylene insulating layer, the flexibility of the cable can be improved greatly by the crosslinked polyethylene outer sheath, and the material cost can be reduced.

The inner side of the anti-interference shielding layer is connected with the inner insulating sleeve through the second connecting strip, and the conductor cladding mode of the design greatly improves the toughness of the conductor, and the flexibility of the cable is greatly improved by matching the conductor cladding mode with the cross-linked polyethylene outer sheath and the conductor.

The reinforcing ribs are arranged in the cable, the flexibility of the cable is guaranteed by other structures, the service life of the cable is guaranteed by the reinforcing ribs, the tensile pulling capacity of the cable is greatly improved, and the flame-retardant performance of the cable is greatly improved by the flame-retardant filling rope.

Drawings

FIG. 1 is a schematic view of a polyethylene insulated flexible electrical power cable according to the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is a cross-sectional view of a crosslinked polyethylene outer jacket of the present utility model;

fig. 4 is a cross-sectional view of a conductor of the present utility model.

In the figure: 1. a polyethylene insulating layer; 2. an anti-interference shielding layer; 3. a flame retardant filler rope; 4. a crosslinked polyethylene outer sheath; 5. a hollow cavity; 6. a first connecting bar; 7. an inner insulating sleeve; 8. a conductor; 9. a second connecting bar; 10. reinforcing ribs.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-4, an embodiment of the present utility model is provided: the utility model provides a polyethylene insulation flexible cable, including polyethylene insulating layer 1, crosslinked polyethylene oversheath 4, interior insulating sheath 7 and conductor 8, link up through first connecting strip 6 between crosslinked polyethylene oversheath 4 and the polyethylene insulating layer 1, first connecting strip 6 follows cable longitudinal extension, the inboard of polyethylene insulating layer 1 is equipped with a plurality of anti-interference shielding layer 2, the inboard middle part of anti-interference shielding layer 2 is equipped with interior insulating sheath 7 through second connecting strip 9, the middle part of interior insulating sheath 7 is equipped with many stranded conductors 8.

The cross-linked polyethylene outer sheath 4 is used for insulating and protecting a cable, the cross-linked polyethylene outer sheath 4 is connected with the polyethylene insulating layer 1 through the first connecting strip 6 conveniently, the conductor 8 can be subjected to anti-interference protection through the anti-interference shielding layer 2, the conductor 8 is subjected to insulation protection through the inner insulating sleeve 7, and the flame-retardant filling rope 3 is coated through the polyethylene insulating layer 1.

Further, a flame-retardant filling rope 3 is arranged between the polyethylene insulating layer 1 and the anti-interference shielding layer 2, and the outer diameter of the anti-interference shielding layer 2 is tangential to the inner diameter of the polyethylene insulating layer 1.

Further, the anti-interference shielding layer 2 is provided with three in total, and the anti-interference shielding layer 2 is evenly arranged on the inner side of the polyethylene insulating layer 1, anti-interference protection can be carried out on the conductor 8 through the anti-interference shielding layer 2, and the middle parts of the three anti-interference shielding layers 2 are provided with reinforcing ribs 10, and the reinforcing ribs 10 are formed by steel wire ropes and aramid yarn wrapped outside the steel wire ropes.

Further, the hollow cavity 5 is arranged among the crosslinked polyethylene outer sheath 4, the polyethylene insulating layer 1 and the first connecting strip 6, functional materials can be added into the hollow cavity 5, the quality of the crosslinked polyethylene outer sheath 4 can be reduced through the hollow cavity 5, and the flexibility of the crosslinked polyethylene outer sheath can be improved.

Further, one end of the first connecting strip 6 is integrally arranged with the crosslinked polyethylene outer sheath 4, the other end of the first connecting strip 6 is in adhesive connection with the outer side of the polyethylene insulating layer 1, and the connection between the polyethylene insulating layer 1 and the crosslinked polyethylene outer sheath 4 is facilitated through the first connecting strip 6.

Working principle: during the use, wrap up the outside at conductor 8 with interior insulating boot 7 to be connected with anti-interference shielding layer 2 through second connecting strip 9, connect through first connecting strip 6 between with crosslinked polyethylene oversheath 4 and the polyethylene insulating layer 1, carry out insulation protection to the cable outside through crosslinked polyethylene oversheath 4, and carry out fire-retardant packing through cavity 5, can improve the functionality of cable, be used for the water conservancy diversion through conductor 8, carry out insulation protection to conductor 8 through interior insulating boot 7, can carry out anti-interference protection to conductor 8 through anti-interference shielding layer 2, be used for linking anti-interference shielding layer 2 and interior insulating boot 7 through second connecting strip 9, and can carry out protection buffering.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. The utility model provides a polyethylene insulation flexible cable, includes polyethylene insulating layer (1), crosslinked polyethylene oversheath (4), interior insulating boot (7) and conductor (8), its characterized in that: the cable is characterized in that the cross-linked polyethylene outer sheath (4) is connected with the polyethylene insulating layer (1) through a first connecting strip (6), the first connecting strip (6) longitudinally extends along with the cable, a plurality of anti-interference shielding layers (2) are arranged on the inner side of the polyethylene insulating layer (1), an inner insulating sleeve (7) is arranged on the inner side of the anti-interference shielding layer (2) through a second connecting strip (9), and a plurality of stranded conductors (8) are arranged in the middle of the inner insulating sleeve (7).

2. A polyethylene insulated flexible power cable according to claim 1, wherein: and a flame-retardant filling rope (3) is arranged between the polyethylene insulating layer (1) and the anti-interference shielding layer (2), and the outer diameter of the anti-interference shielding layer (2) is tangential to the inner diameter of the polyethylene insulating layer (1).

3. A polyethylene insulated flexible power cable according to claim 1, wherein: the anti-interference shielding layers (2) are arranged in total, the anti-interference shielding layers (2) are uniformly arranged on the inner sides of the polyethylene insulating layers (1), and reinforcing ribs (10) are arranged in the middle of the three anti-interference shielding layers (2).

4. A polyethylene insulated flexible power cable according to claim 3, wherein: the reinforcing rib (10) is composed of a steel wire rope and aramid yarns wrapped outside the steel wire rope.

5. A polyethylene insulated flexible power cable according to claim 1, wherein: a hollow cavity (5) is arranged among the cross-linked polyethylene outer sheath (4), the polyethylene insulating layer (1) and the first connecting strip (6), and functional materials can be added into the hollow cavity (5).

6. A polyethylene insulated flexible power cable according to claim 1, wherein: one end of the first connecting strip (6) is connected with the crosslinked polyethylene outer sheath (4), and the other end of the first connecting strip (6) is connected with the outer side of the polyethylene insulating layer (1) in an adhesive mode.