CN211742696U

CN211742696U - Polyolefin insulated communication cable

Info

Publication number: CN211742696U
Application number: CN202020678113.8U
Authority: CN
Inventors: 于永卫
Original assignee: Henan Hongtong Cable Co ltd
Current assignee: Henan Hongtong Cable Co ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2020-10-23
Anticipated expiration: 2030-04-28

Abstract

A polyolefin insulated communication cable with safe use, high flame retardance and high tensile strength; the cable core fixing device comprises a fixed core and a plurality of cable cores, wherein the fixed core is also provided with a fixed support, the fixed support comprises a plurality of fixed plates arranged on the fixed core and an annular sleeve arranged at the outer end of each fixed plate, a cable core groove is formed between every two fixed plates, the cable cores are arranged at three cable core grooves of the fixed core, the fixed support is provided with a plurality of support ribs, each support rib comprises a first support plate, a second support plate and a positioning shaft, one end of each of the first support plate and the second support plate is fixedly connected with the positioning shaft, and the other end of each of the first support plate and the second support plate is fixedly connected with the annular sleeve; the utility model has novel conception, fixes the fixed core through the fixed support and the supporting rib, so that the three cable cores can not move relatively, and the cables are prevented from being crosslinked together due to relative shaking; the good conductivity is kept, and the heating condition caused by other connection modes is avoided.

Description

Polyolefin insulated communication cable

Technical Field

The utility model relates to the technical field of cables, in particular to polyolefin insulation communication cable.

Background

With the development of modern society, electric wires and cables are widely used in the process of power transmission, and since the 21 st century, the development direction of electric wires and cables gradually develops towards the environment-friendly direction of halogen-free low-smoke flame retardation. The important cities of Beijing, Shanghai and the like in China are clearly specified: the use of polyvinyl chloride wires and cables is prohibited in important buildings to avoid more casualties caused by a large amount of toxic gases such as dense smoke, hydrogen chloride and the like in the case of fire, and the adoption of polyolefin insulated wires and cables has become a local regulation in these areas. With the enhancement of environmental awareness of people, the demand on polyolefin insulated cables is more and more extensive, and the polyolefin insulated cables increasingly become the key development direction of the wire and cable industry.

Therefore, a polyolefin insulated communication cable is needed to solve this problem.

SUMMERY OF THE UTILITY MODEL

In view of the above situation, the present invention aims to provide a polyolefin insulated communication cable with high flame retardancy and high tensile strength.

The technical scheme of its solution is, the utility model discloses a fixed core and a plurality of cable core still are equipped with the fixed bolster on the fixed core, the fixed bolster including set up a plurality of fixed plates on fixed core and install the ring casing in the fixed plate outer end, form the cable core groove between per two fixed plates, the three cable core groove department at fixed core is installed to the cable core, be equipped with a plurality of brace rods on the fixed bolster, the brace rod includes first backup pad, second backup pad and location axle, the one end and the location axle fixed connection of first backup pad and second backup pad, the other one end of first backup pad and second backup pad respectively with ring casing fixed connection, the outside cover of brace rod be equipped with the armor, be equipped with a plurality of enhancement archs on the inside wall of armor, strengthen protruding top in first backup pad and second backup pad, the outside of armor still is equipped with around the covering.

The utility model has the advantages that: the utility model has novel conception, the three conductors are integrally fixed on the fixed core, and the fixed core is fixed by the fixed support and the supporting ribs, so that the three cable cores can not move relatively, and the cables are prevented from being crosslinked together due to relative shaking; the cable has the advantages that good conductivity is kept, heating caused by connection in other modes is avoided, the sealing environment required by high-voltage transmission is ensured, the flame retardant performance and the safety and reliability degree of the cable are effectively improved, and the cable has higher application and popularization values.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

Example (b):

as shown in figure 1, the utility model comprises a fixed core 1 and a plurality of cable cores, the number of the cable cores is preferably 3, the fixed core 1 is further provided with a fixed support, the fixed support comprises a plurality of fixed plates 3 arranged on the fixed core 1 and an annular sleeve 4 arranged at the outer end of the fixed plates 3, the fixed core 1 is of a polygonal structure and a triangular structure, the fixed core 1 is made of flexible heat-conducting polymer materials, the tightness of attachment between the fixed core and the cable core can be ensured, the fixed core can generate corresponding deformation when being subjected to certain pressure, the fixed core can be restored in time after the pressure is eliminated, the contact of the largest area is always kept in use, the heat dissipation effect is good, the cable grooves 5 are formed between every two fixed plates 3 through the arc-shaped annular sleeve 4, the cable cores are arranged at three cable core grooves 5 of the fixed core 1, the fixed support is provided with a plurality of support ribs, the supporting rib comprises a first supporting plate 6, a second supporting plate 7 and a positioning shaft 8, one end of the first supporting plate 6 and one end of the second supporting plate 7 are fixedly connected with the positioning shaft 8, the other end of the first supporting plate 6 and the other end of the second supporting plate 7 are respectively fixedly connected with the annular sleeve 4, the first supporting plate 6 and the second supporting plate 7 are tightly attached to the side surface of the cable core, so that the cable core is fixed on the fixed support and the fixed core 1 through the first supporting plate 6 and the second supporting plate 7, the armor layer 9 is sleeved outside the supporting rib, a plurality of reinforcing protrusions 10 are arranged on the inner side wall of the armor layer 9, the reinforcing protrusions 10 are supported on the first supporting plate 6 and the second supporting plate 7, the space between the supporting rib and the armor layer 9 and the inner side of the arc-shaped supporting layer are both cavities, the temperature in the use process of the cable can be effectively reduced, and the cable can be prevented, the outside of armor 9 still is equipped with around covering 11.

The fixing plate 3 is provided with a plurality of arc-shaped bulges 12, and the arc-shaped bulges 12 are propped against the cable core.

The cable core include aluminum alloy conductor 13 and separate oxygen area 14, fire-retardant layer 15 and polyolefin layer 16, the conductor outside has around the package and separates oxygen area 14, it is equipped with fire-retardant layer 15 to separate the oxygen area 14 outside, the inside packing of fire-retardant layer 15 has the fire retardant, and the fire retardant is aluminium hydroxide, polyolefin layer 16 has been extruded in the 15 outsides of fire-retardant layer, make the cable have good high temperature resistant, there is not steamed low cigarette, high flexibility, performances such as light weight, thickness all has when insulating extruding, no air hole, the surface is smooth, can adapt to more complicated installation service environment, wide market prospect and application prospect have.

Fixed bolster and brace rod make by flexible heat conduction macromolecular material, can guarantee and cable core between attached compactness, when the cable received certain pressure, mount and brace rod can produce corresponding deformation, reply when arriving again after the pressure elimination, and have outstanding radiating effect.

The armor layer 9 is a stainless steel strip interlocking armor layer, can bear longitudinal pressure, improves the performances of rust prevention, tensile strength and bending in the use of the cable, and the stainless steel strip interlocking armor layer 9 can also play a role in resisting signal interference of electromagnetic waves outside the cable by a cable shielding layer.

The wrapping layer 11 is a polyester tape wrapping layer, and has high mechanical strength, excellent insulating property, high temperature resistance and low temperature resistance.

The utility model has the advantages that: the utility model has novel conception, the three conductors are integrally fixed on the fixed core 1, and the fixed core 1 is fixed by the fixed support and the supporting ribs, so that the three cable cores can not move relatively, and the cables are prevented from being crosslinked together due to relative shaking; the cable has the advantages that good conductivity is kept, heating caused by connection in other modes is avoided, the sealing environment required by high-voltage transmission is ensured, the flame retardant performance and the safety and reliability degree of the cable are effectively improved, and the cable has higher application and popularization values.

The foregoing detailed description/examples are specific embodiments of the present invention, and are intended to be illustrative of the principles of the present invention, which are intended to be illustrative and exemplary, and should not be construed as limiting the scope of the present invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include those which make any obvious replacement or modification of the embodiments described herein, and all of which are within the scope of the present invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. A polyolefin insulation communication cable comprises a fixed core (1) and a plurality of cable cores, and is characterized in that the fixed core (1) is further provided with a fixed support, the fixed support comprises a plurality of fixed plates (3) arranged on the fixed core (1) and a ring-shaped sleeve (4) arranged at the outer end of each fixed plate (3), a cable core groove (5) is formed between every two fixed plates (3), the cable cores are arranged at three cable core grooves (5) of the fixed core (1), the fixed support is provided with a plurality of support ribs, each support rib comprises a first support plate (6), a second support plate (7) and a positioning shaft (8), one end of each of the first support plate (6) and the second support plate (7) is fixedly connected with the positioning shaft (8), the other end of each of the first support plate (6) and the other end of each of the second support plate (7) are respectively fixedly connected with the ring-shaped sleeve (4), and the outer side of each support rib is sleeved with an armor layer (9), be equipped with a plurality of enhancement archs (10) on the inside wall of armor (9), strengthen protruding (10) top on first backup pad (6) and second backup pad (7), the outside of armor (9) still is equipped with around covering (11).

2. A polyolefin insulated communication cable as claimed in claim 1, wherein the fixing plate (3) is provided with a plurality of arc-shaped protrusions (12), and the arc-shaped protrusions (12) are pressed against the cable core.

3. The polyolefin insulated communication cable of claim 1, wherein the cable core comprises an aluminum alloy conductor (13), an oxygen isolation tape (14), a flame retardant layer (15) and a polyolefin layer (16), the oxygen isolation tape (14) is wrapped outside the conductor, the flame retardant layer (15) is arranged outside the oxygen isolation tape (14), the flame retardant layer (15) is filled with a flame retardant, the flame retardant is aluminum hydroxide, and the polyolefin layer (16) is extruded outside the flame retardant layer (15).

4. The insulated polyolefin communications cable of claim 1, wherein the mounting bracket and the support rib are made of a flexible, thermally conductive polymer material.

5. A polyolefin insulated communication cable according to claim 1, characterized in that the armouring layer (9) is a stainless steel tape interlocking armouring layer.

6. A polyolefin insulated telecommunication cable as claimed in claim 1, characterized in that said wrapping (11) is a polyester tape wrapping.