CN110942857A

CN110942857A - Extrusion-resistant deformation-resistant low-voltage power cable

Info

Publication number: CN110942857A
Application number: CN201911191553.9A
Authority: CN
Inventors: 李峰; 吴词玉; 肖尚玉; 肖雄
Original assignee: ANHUI YIHE CABLE Co Ltd
Current assignee: ANHUI YIHE CABLE Co Ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-03-31

Abstract

The invention relates to an extrusion-resistant and deformation-resistant low-voltage power cable which comprises a cable outer cover, wherein a plurality of cable cores which are circumferentially distributed around the rotation center of the cable outer cover are distributed in the cable outer cover, insulating layers are sleeved on the cable cores, a fireproof layer is sleeved on the insulating layers, and extrusion layers which absorb external extrusion force to form deformation protection on the cable cores are distributed between the insulating layers and the cable outer cover. The extrusion force is absorbed by the energy absorption layer with the regular hexagonal cross section, so that the condition that the cable core is cracked or broken under the extrusion force when the low-voltage power cable receives extrusion is prevented, and the support strength of the cable outer cover, the outer absorption layer and the inner absorption layer is enhanced by the first extrusion area and the second extrusion area, so that the energy absorption layer is prevented from being broken or even the cable core is prevented from being broken due to over bending of the low-voltage power cable when the low-voltage power cable receives the extrusion force.

Description

Extrusion-resistant deformation-resistant low-voltage power cable

Technical Field

The invention relates to a power cable, in particular to a low-voltage power cable with extrusion resistance and deformation resistance.

Background

The low-voltage power cable is mainly used for transmitting power or signal current and signal voltage and is widely applied in production and life; the application scenes of the low-voltage power cable are wide, so that the requirement on the protection strength of the outer cover of the low-voltage power cable is high, the condition that the outer cover is broken or the cable core is broken after the existing low-voltage power cable is extruded or bent is generated, the normal use is seriously influenced, and the condition that the personal safety is harmed such as electric leakage and the like is even caused in serious conditions, so that the problems are solved by the extrusion-resistant and deformation-resistant low-voltage power cable.

Disclosure of Invention

In order to solve the technical problems, the invention provides an extrusion-resistant and deformation-resistant low-voltage power cable. The technical problem to be solved by the invention is realized by adopting the following technical scheme:

the utility model provides a low pressure power cable of resistant extrusion resistance to deformation, includes the cable dustcoat, it is a plurality of cable core that the circumference distributes to distribute in the cable dustcoat around cable dustcoat rotation center, cable core all overlaps and is equipped with the insulating layer, the insulating layer cover is equipped with the flame retardant coating, it has the extrusion layer of absorbing external extrusion force in order to form deformation protection cable core to distribute between insulating layer and the cable dustcoat.

The extrusion layer is including outer absorption layer and the interior absorption layer that closes with cable dustcoat and flame retardant coating counterbalance respectively, outer absorption layer and interior absorption layer are equipped with and are a plurality of energy-absorbing unit that the circumference distributes in order to absorb external extrusion force around cable dustcoat rotation center, still be equipped with the articulamentum of connecting two adjacent energy-absorbing units in order to increase support intensity between outer absorption layer and the interior absorption layer.

The energy absorption unit comprises an energy absorption layer with a regular hexagonal section for absorbing extrusion force to generate deformation.

A first pressing area for increasing the supporting force of the outer absorption layer and the inner absorption layer is formed among the connecting layer, the outer absorption layer and the inner absorption layer.

Two side edges of the energy absorption layer perpendicular to the radius direction of the cable housing are respectively connected with the outer absorption layer and the inner absorption layer to form a second extrusion area for increasing the supporting force of the energy absorption layer.

And a filling layer is arranged between the insulating layer and the cable core.

The invention has the beneficial effects that: the extrusion force is absorbed by the energy absorption layer with the regular hexagonal cross section, so that the condition that the cable core is cracked or broken under the extrusion force when the low-voltage power cable receives extrusion is prevented, and the support strength of the cable outer cover, the outer absorption layer and the inner absorption layer is enhanced by the first extrusion area and the second extrusion area, so that the energy absorption layer is prevented from being broken or even the cable core is prevented from being broken due to over bending of the low-voltage power cable when the low-voltage power cable receives the extrusion force.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic front view of a cable according to the present invention;

FIG. 2 is an enlarged view of I of FIG. 1 of the present invention.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be described more clearly and more completely with reference to the drawings in the following embodiments, and it is understood that the described embodiments are only a part of the present invention, rather than all of the present invention, and based on the embodiments, other embodiments obtained by those skilled in the art without inventive exercise are within the protection scope of the present invention.

As shown in fig. 1 to 2, the extrusion-resistant and deformation-resistant low-voltage power cable comprises a cable housing 1, wherein a plurality of cable cores 2 which are circumferentially distributed around the rotation center of the cable housing 1 are distributed in the cable housing 1, the cable cores 2 are all sleeved with insulating layers 3, the insulating layers 3 are sleeved with fireproof layers 4, and extrusion layers 5 which absorb external extrusion force to form deformation protection cable cores 2 are distributed between the insulating layers 3 and the cable housing 1.

The extrusion layer 5 comprises an outer absorption layer 51 and an inner absorption layer 52 which are respectively abutted to the cable housing 1 and the fireproof layer 4, the outer absorption layer 51 and the inner absorption layer 52 are provided with a plurality of energy absorption units 53 which are circumferentially distributed around the rotation center of the cable housing 1 to absorb external extrusion force, and a connecting layer 54 which is used for connecting two adjacent energy absorption units 53 to increase the supporting strength is further arranged between the outer absorption layer 51 and the inner absorption layer 52.

The energy absorption unit 53 comprises an energy absorption layer 531 with a regular hexagonal cross section for absorbing extrusion force to generate deformation; energy absorbing layer 531 absorbs external extrusion force through producing deformation, prevents that cable core from receiving external pressure and taking place to buckle or even fracture.

A first pressing area 54a for increasing the supporting force of the outer absorption layer 51 and the inner absorption layer 52 is formed among the connecting layer 54, the outer absorption layer 51, the inner absorption layer 52 and the energy absorption unit 53; the first crush zone 54 enhances the strength of the outer absorbent layer 51 and the inner absorbent layer 52, and prevents the outer absorbent layer 51 and the inner absorbent layer 52 from being excessively bent under stress to break.

Two side edges of the energy absorption layer 531 perpendicular to the radius direction of the cable housing 1 are respectively connected with the outer absorption layer 51 and the inner absorption layer 52 to form a second extrusion area 532 for increasing the supporting force of the energy absorption layer 531; the second squeezing area 532 enhances the strength of the energy absorbing layer 531, prevents the energy absorbing layer 531 from being excessively bent and broken when deformed, so that the area cannot absorb squeezing force, loads of the outer absorbing layer 51, the inner absorbing layer 52 and the first squeezing area 54a are increased, the stress is uneven, and the whole squeezing layer 5 is damaged.

And a filling layer 6 is arranged between the insulating layer 3 and the cable core 2.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a low pressure power cable of resistant extrusion resistance to deformation, includes cable cover (1), it has a plurality of cable core (2) that are the circumference and distribute around cable cover (1) center of rotation to distribute in cable cover (1), its characterized in that: the cable core (2) is sleeved with an insulating layer (3), the insulating layer (3) is sleeved with a fireproof layer (4), and an extrusion layer (5) for absorbing external extrusion force to form the deformation protection cable core (2) is distributed between the insulating layer (3) and the cable outer cover (1).

2. The low voltage power cable of claim 1, wherein said cable is characterized by: the cable sheath is characterized in that the extrusion layer (5) comprises an outer absorption layer (51) and an inner absorption layer (52) which are respectively abutted to the cable sheath (1) and the fireproof layer (4), the outer absorption layer (51) and the inner absorption layer (52) are provided with a plurality of energy absorption units (53) which are circumferentially distributed around the rotation center of the cable sheath (1) and absorb external extrusion force, and a connecting layer (54) for connecting two adjacent energy absorption units (53) to increase the supporting strength is further arranged between the outer absorption layer (51) and the inner absorption layer (52).

3. The low voltage power cable of claim 2, wherein said cable is characterized by: the energy absorption unit (53) comprises an energy absorption layer (531) with a regular hexagonal cross section for absorbing extrusion force to generate deformation.

4. The low voltage power cable of claim 2, wherein said cable is characterized by: a first pressing area (54a) for increasing the supporting force of the outer absorption layer (51) and the inner absorption layer (52) is formed between the connecting layer (54) and the outer absorption layer (51) and between the connecting layer and the inner absorption layer (52).

5. A crush-resistant and deformation-resistant low-voltage power cable as claimed in claim 3, wherein: two side edges of the energy absorption layer (531) perpendicular to the radius direction of the cable outer cover (1) are respectively connected with the outer absorption layer (51) and the inner absorption layer (52) to form a second extrusion area (532) for increasing the supporting force of the energy absorption layer (531).

6. The low voltage power cable of claim 2, wherein said cable is characterized by: and a filling layer (6) is arranged between the insulating layer (3) and the cable core (2).