CN213877636U

CN213877636U - Anti-deformation fire-resistant wear-resistant low-voltage power cable

Info

Publication number: CN213877636U
Application number: CN202022935090.7U
Authority: CN
Inventors: 邓任作; 朱禧楠; 陈绍明; 彭琼; 赵影; 任小回; 杨伟周
Original assignee: Guangdong Jianbao Cable Co ltd
Current assignee: Guangdong Jianbao Cable Co ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-08-03
Anticipated expiration: 2030-12-07

Abstract

The utility model discloses a resistance to deformation fire-resistant wear-resisting low pressure power cable belongs to cable technical field, including the back shaft, the outside of back shaft is provided with the inner sheath, be provided with a plurality of cable inner cores with the same axial of back shaft between back shaft and the inner sheath, a plurality of cable inner core is radial evenly distributed around the back shaft, it has fire-retardant filling layer still to fill between back shaft and the inner sheath, the outside of inner sheath is provided with total shield layer, the outside of total shield layer is provided with the anti-tear silica gel layer, the outside of anti-tear silica gel layer is provided with the rubber layer, the outside of rubber layer is provided with the oversheath; the supporting shaft is fixedly connected with a plurality of supporting devices along the length direction of the supporting shaft, and each supporting device comprises a plurality of first arc-shaped supporting plates and a plurality of second arc-shaped supporting plates which are radially and uniformly distributed on the periphery of the supporting shaft. The utility model discloses have better resistance to deformation ability, be favorable to the utility model discloses a use.

Description

Anti-deformation fire-resistant wear-resistant low-voltage power cable

Technical Field

The utility model relates to a low voltage power cable specifically is a wear-resisting low voltage power cable of resistance to deformation fire resistance belongs to cable technical field.

Background

The power cable is used for transmitting and distributing electric energy, is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater, and has a gradually increasing proportion in the power line.

The existing low-voltage power cable has the following defects: since a protection structure is not provided, the low voltage power cable has poor deformation resistance, and the low voltage power cable may be broken by an external force during actual use, which is not favorable for the use of the low voltage power cable.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a wear-resisting low voltage power cable of resistance to deformation fire-resistant in order to solve above-mentioned problem just, have better resistance to deformation ability, be favorable to the utility model discloses a use.

The utility model discloses a following technical scheme realizes above-mentioned purpose, a resistance to deformation fire-resistant wear-resisting low pressure power cable, including the back shaft, the outside of back shaft is provided with the inner sheath, be provided with a plurality of cable inner cores with the same axial of back shaft between back shaft and the inner sheath, a plurality of cable inner core is radial evenly distributed around the back shaft, it has fire-retardant filling layer still to fill between back shaft and the inner sheath, the outside of inner sheath is provided with total shielding layer, the outside of total shielding layer is provided with the anti-tear silica gel layer, the outside of anti-tear silica gel layer is provided with the rubber layer, the outside of rubber layer is provided with the oversheath;

the supporting shaft is fixedly connected with a plurality of supporting devices along the length direction of the supporting shaft, each supporting device comprises a plurality of first arc-shaped supporting plates and second arc-shaped supporting plates which are radially and uniformly distributed around the supporting shaft, the first arc-shaped supporting plates and the second arc-shaped supporting plates are alternately arranged, one side surfaces of the first arc-shaped supporting plates and one side surfaces of the second arc-shaped supporting plates are both attached to the inner circumferential surface of the inner sheath, the second arc-shaped supporting plates are both fixedly connected with the supporting shaft through supporting columns, and the first arc-shaped supporting plates are both fixedly connected with two adjacent supporting columns through two connecting columns.

Preferably, the cable core comprises a plurality of conductive cores and an insulating layer for coating the plurality of conductive cores.

Preferably, in order to avoid damage to the inner sheath caused by the first arc-shaped support plate and the second arc-shaped support plate, corners of the first arc-shaped support plate at two ends in the radial direction of the support shaft are polished smoothly, and the first arc-shaped support plate and the second arc-shaped support plate are identical in structure.

Preferably, in order to avoid total shielding layer and the anti relative rotation that takes place on the circumferencial direction on the silica gel layer that tears, the inner circumference face on anti-tear silica gel layer is provided with multiunit positioner along its length direction, positioner includes that a plurality of location are protruding, the outer periphery on total shielding layer is provided with the constant head tank with the protruding one-to-one in a plurality of location, the protruding block in location is in the constant head tank that corresponds.

Preferably, the positioning protrusion is of a hemispherical structure, and the shape of the positioning groove is adapted to the shape of the positioning protrusion.

Preferably, in order to ensure the supporting effect, each supporting device is at least provided with three first arc-shaped supporting plates, and the number of the second arc-shaped supporting plates is equal to that of the first arc-shaped supporting plates.

The utility model has the advantages that: the inner sheath is supported by the mutual matching of the structures of the supporting shaft, the supporting column, the first arc-shaped supporting plate, the connecting column and the second arc-shaped supporting plate, so that the deformation resistance of the inner sheath is improved, and the use of the utility model is facilitated; first arc backup pad all through two spliced poles respectively with two adjacent support column fixed connection to fix first arc backup pad, increased the stability of first arc backup pad, simultaneously, carry out fixed connection with two adjacent support columns through two spliced poles on first arc backup pad, thereby increase the stability of support column, further strengthened the anti deformability of inner sheath, structural design is more reasonable.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the first arc-shaped supporting plate in fig. 1 according to the present invention.

In the figure: 1. a support shaft; 2. a support pillar; 3. an inner core of the cable; 4. a first arc-shaped support plate; 5. connecting columns; 6. a second arc-shaped support plate; 7. an inner sheath; 8. a total shielding layer; 9. positioning the projection; 10. a tear-resistant silicone layer; 11. a rubber layer; 12. an outer sheath; 13. and a flame-retardant filling layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, an anti-deformation fire-resistant wear-resistant low-voltage power cable comprises a supporting shaft 1, an inner sheath 7 is arranged outside the supporting shaft 1, a plurality of cable inner cores 3 which are coaxial with the supporting shaft 1 are arranged between the supporting shaft 1 and the inner sheath 7, the cable inner cores 3 are uniformly distributed around the supporting shaft 1 in a radial shape, a flame-retardant filling layer 13 is filled between the supporting shaft 1 and the inner sheath 7, a total shielding layer 8 is arranged outside the inner sheath 7, an anti-tearing silica gel layer 10 is arranged outside the total shielding layer 8, a rubber layer 11 is arranged outside the anti-tearing silica gel layer 10, and an outer sheath 12 is arranged outside the rubber layer 11;

back shaft 1 is along a plurality of strutting arrangement of its length direction fixedly connected with, strutting arrangement includes a plurality of first arc backup pad 4 and the second arc backup pad 6 that are radial evenly distributed around back shaft 1, first arc backup pad 4 and second arc backup pad 6 set up in turn, the side of first arc backup pad 4 and second arc backup pad 6 all laminates in the inner circumference face of inner sheath 7, second arc backup pad 6 all through support column 2 and back shaft 1 fixed connection, first arc backup pad 4 all through two spliced poles 5 respectively with two adjacent support column 2 fixed connection.

As a technical optimization scheme of the utility model, cable inner core 3 includes the electrically conductive heart yearn of a plurality of and is used for carrying out the insulating layer of cladding with the electrically conductive heart yearn of a plurality of.

As a technical optimization scheme of the utility model, first arc backup pad 4 all polishes smoothly along the bight at the radial both ends of back shaft 1, and first arc backup pad 4 is the same with second arc backup pad 6's structure.

As a technical optimization scheme, the inner circumference of anti-tear silica gel layer 10 is provided with multiunit positioner along its length direction, and positioner includes the protruding 9 in a plurality of location, and total shield layer 8's outer periphery is provided with the constant head tank with the protruding 9 one-to-one in a plurality of locations, fixes a position protruding 9 blocks in the constant head tank that corresponds.

As a technical optimization scheme of the utility model, protruding 9 of location is hemispherical structure, and the shape of constant head tank suits with the protruding 9's of location shape.

As a technical optimization scheme of the utility model, every strutting arrangement is provided with three first arc backup pad 4 at least, and the quantity of second arc backup pad 6 equals with the quantity of first arc backup pad 4.

The utility model discloses when using: the inner sheath 7 is supported by the mutual matching of the structures of the supporting shaft 1, the supporting column 2, the first arc-shaped supporting plate 4, the connecting column 5 and the second arc-shaped supporting plate 6, so that the deformation resistance of the inner sheath 7 is increased, and the use of the utility model is facilitated; first arc backup pad 4 all through two spliced poles 5 respectively with two adjacent support column 2 fixed connection to fix first arc backup pad 4, increased first arc backup pad 4's stability, simultaneously, carry out fixed connection with two adjacent support columns 2 through two spliced poles 5 on first arc backup pad 4 and it, thereby increase support column 2's stability, further strengthened the anti deformability of inner sheath 7, structural design is more reasonable.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a fire-resistant wear-resisting low pressure power cable of resistance to deformation, includes back shaft (1), the outside of back shaft (1) is provided with inner sheath (7), be provided with between back shaft (1) and inner sheath (7) a plurality ofly with back shaft (1) coaxial cable inner core (3), a plurality of cable inner core (3) are radial evenly distributed around back shaft (1), it has fire-retardant filling layer (13) still to fill between back shaft (1) and inner sheath (7), the outside of inner sheath (7) is provided with total shielding layer (8), the outside of total shielding layer (8) is provided with anti-tear silica gel layer (10), the outside of anti-tear silica gel layer (10) is provided with rubber layer (11), the outside of rubber layer (11) is provided with oversheath (12), its characterized in that: the supporting shaft (1) is fixedly connected with a plurality of supporting devices along the length direction, each supporting device comprises a plurality of first arc-shaped supporting plates (4) and second arc-shaped supporting plates (6) which are radially and uniformly distributed on the periphery of the supporting shaft (1), the first arc-shaped supporting plates (4) and the second arc-shaped supporting plates (6) are alternately arranged, one side surfaces of the first arc-shaped supporting plates (4) and the second arc-shaped supporting plates (6) are attached to the inner circumferential surface of the inner sheath (7), the second arc-shaped supporting plates (6) are fixedly connected with the supporting shaft (1) through supporting columns (2), and the first arc-shaped supporting plates (4) are fixedly connected with two adjacent supporting columns (2) through two connecting columns (5).

2. The deformation-resistant fire-resistant wear-resistant low-voltage power cable according to claim 1, characterized in that: the cable inner core (3) comprises a plurality of conductive core wires and an insulating layer for coating the conductive core wires.

3. The deformation-resistant fire-resistant wear-resistant low-voltage power cable according to claim 1, characterized in that: the corner parts of the first arc-shaped supporting plate (4) at two radial ends of the supporting shaft (1) are polished smoothly, and the first arc-shaped supporting plate (4) and the second arc-shaped supporting plate (6) are identical in structure.

4. The deformation-resistant fire-resistant wear-resistant low-voltage power cable according to claim 1, characterized in that: the inner circumference of anti-tear silica gel layer (10) is provided with multiunit positioner along its length direction, positioner includes a plurality of location archs (9), the outer periphery of total shield layer (8) is provided with the constant head tank with a plurality of protruding (9) one-to-one in location, protruding (9) block in the constant head tank that corresponds in the location.

5. The deformation-resistant fire-resistant wear-resistant low-voltage power cable according to claim 4, wherein: the positioning bulge (9) is of a hemispherical structure, and the shape of the positioning groove is matched with that of the positioning bulge (9).

6. The deformation-resistant fire-resistant wear-resistant low-voltage power cable according to claim 1, characterized in that: each support device is at least provided with three first arc-shaped support plates (4), and the number of the second arc-shaped support plates (6) is equal to that of the first arc-shaped support plates (4).