CN216793376U

CN216793376U - Noninductive coaxial cable

Info

Publication number: CN216793376U
Application number: CN202122565683.3U
Authority: CN
Inventors: 杜宁
Original assignee: Xi'an Yinhe Power Electronic Communications Co ltd
Current assignee: Xi'an Yinhe Power Electronic Communications Co ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-06-21
Anticipated expiration: 2031-10-25

Abstract

The utility model relates to the technical field of cables and discloses an noninductive coaxial cable which comprises a protective outer sleeve, wherein a spiral protective pipe wraps the protective outer sleeve, an inner layer protective pipe wraps the inner side wall of the spiral protective pipe, a filling layer is filled in the inner layer protective pipe, a plurality of cable cores are arranged in the inner layer protective pipe, and an insulating layer wraps the outer surfaces of the cable cores. This noninductive coaxial cable, through the spiral protection tube that uses elastic rubber to make, when the cable received external force and assaulted, can protect the cable inner core, through the wearing layer that uses the butadiene rubber layer to make, can improve the wearability of cable and improve the holistic toughness of protective sheath, through the filling layer that sets up the silicon rubber material and make in the inside of inlayer protection tube, it is sufficient to effectual fill all spaces inside the inlayer protection tube, make the cable reduce because produce the gap and the problem of losing.

Description

Noninductive coaxial cable

Technical Field

The utility model relates to the technical field of cables, in particular to an noninductive coaxial cable.

Background

At present, each phase of a high-voltage power transmission and transformation line with the voltage of more than 110kv generally uses a single-core cable to transmit alternating current, and three phases are laid in a straight line or a delta shape. The high-voltage single-core cable generally comprises a metal sleeve, such as a corrugated aluminum metal sleeve, wherein the metal sleeve can generate induction voltage under the action of an alternating electric field generated by each phase of current transmission, induction current can also be generated in the metal sleeve, the resistivity of the metal sleeve is small, the lower induction voltage can also generate larger induction current, and the induction current can cause the metal sleeve to generate heat, so that the current-carrying capacity of the cable is reduced, and the power transmission safety is influenced.

Some cable devices currently on the market:

(1) in the use process of the noninductive coaxial cable, the existing cable is exposed outside for a long time and is easy to be impacted by external force, and the inner core of the cable is easy to be damaged;

(2) in the use process of the noninductive coaxial cable, the temperature of the use environment of the cable is high, and the cable is easy to generate insulation aging and scorching phenomena at high temperature, so that the performance of the cable is lost, and the service life of the cable is influenced.

We have therefore proposed an noninductive coaxial cable in order to solve the problems set forth above.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In view of the defects in the prior art in the background art, the present invention is to provide a non-inductive coaxial cable to solve the problems of poor pressure resistance and poor high temperature resistance of some non-inductive coaxial cables in the market proposed in the background art.

(II) technical scheme

In order to achieve the purpose, the utility model is realized by the following technical scheme:

a noninductive coaxial cable comprises a protective outer sleeve, wherein a spiral protective pipe wraps the inner part of the protective outer sleeve, an inner layer protective pipe wraps the inner side wall of the spiral protective pipe, a filling layer is filled in the inner layer protective pipe, a plurality of cable inner cores are arranged in the inner layer protective pipe, and insulating layers wrap the outer surfaces of the cable inner cores;

the inside of protective sheath is provided with the fire prevention insulating layer, the surface of fire prevention insulating layer is provided with the wearing layer.

Preferably, the spiral protection pipe is made of elastic rubber and is adhered to the outer surface of the inner protection pipe in a spiral shape.

Preferably, the fireproof heat-insulating layer is made of high-temperature-resistant nano aluminum oxide, nano titanium oxide and nano zirconium materials, and one side face of the fireproof heat-insulating layer is adhered to the inner side wall of the wear-resistant layer.

Preferably, the wear-resistant layer is made of a butadiene rubber layer, and the outer surface of the wear-resistant layer is coated with anti-corrosion paint.

Preferably, the filling layer comprises a silicone rubber material, and the outer surface of the filling layer is adhered to the inner side wall of the inner protection pipe.

Preferably, each insulating layer is made of an insulating layer made of a PVC material, each cable core is made of a plurality of stranded steel wires, and an outer surface of each cable core is attached to an inner side wall of the insulating layer.

(III) advantageous effects

Compared with the prior art, the utility model has the beneficial effects that: this noninductive coaxial cable:

(1) through the spiral protection tube that uses elastic rubber to make, when external force impact is received to the cable, can protect the cable inner core, wearing layer through using the butadiene rubber layer to make, can improve the wearability of cable and improve the holistic toughness of protective sheath, through scribbling the anticorrosive nature lacquer at the exterior surface of wearing layer, can effectively improve the long-time corrosion resistance of cable, the filling layer of making through the inside setting silicon rubber material of inlayer protection tube, it is sufficient to effectual fill all spaces inside the inlayer protection tube, make the cable reduce because produce the gap and the problem of losing.

(2) The fireproof heat-insulating layer made of high-temperature nano aluminum oxide, nano titanium oxide and nano zirconium materials can improve the overall high-temperature resistance of the cable and prolong the service life of the cable.

Drawings

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

FIG. 2 is a schematic structural diagram of a spiral protection tube of the noninductive coaxial cable according to the present invention;

FIG. 3 is a schematic view of the inner protective tube of the non-inductive coaxial cable according to the present invention;

fig. 4 is a schematic view of a dissecting structure of the protective sheath of the noninductive coaxial cable according to the present invention.

In the figure: the cable comprises a protective outer sleeve 1, an inner layer protection tube 2, a cable inner core 3, a spiral protection tube 4, a filling layer 5, a wear-resistant layer 6, a fireproof heat insulation layer 7 and an insulation layer 8.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a non-inductive coaxial cable; the cable comprises a protective outer sleeve 1, wherein a spiral protection pipe 4 is wrapped inside the protective outer sleeve 1, an inner layer protection pipe 2 is wrapped on the inner side wall of the spiral protection pipe 4, a filling layer 5 is filled inside the inner layer protection pipe 2, a plurality of cable cores 3 are arranged inside the inner layer protection pipe 2, and an insulating layer 8 is wrapped on the outer surface of each cable core 3;

the inside of protective sheath 1 is provided with fire prevention insulating layer 7, and the surface of fire prevention insulating layer 7 is provided with wearing layer 6.

As a preferred technical scheme of the utility model: the spiral protection pipe 4 is made of elastic rubber, and the spiral protection pipe 4 is adhered to the outer surface of the inner layer protection pipe 2 in a spiral shape.

As a preferred technical scheme of the utility model: the fireproof heat insulation layer 7 is made of high-temperature-resistant nano aluminum oxide, nano titanium oxide and nano zirconium materials, one side face of the fireproof heat insulation layer 7 is adhered to the inner side wall of the wear-resistant layer 6, the heat insulation performance of the high-temperature-resistant nano aluminum oxide, nano titanium oxide and nano zirconium materials is 3-4 times better than that of traditional fiber heat insulation materials, and the internal cable can be protected from being affected by external high temperature.

As a preferred technical scheme of the utility model: the wear-resistant layer 6 is made of a butadiene rubber layer, the outer surface of the wear-resistant layer 6 is coated with anti-corrosion paint, and the butadiene rubber layer has the characteristics of high elasticity, good wear resistance, good cold resistance, low heat generation, good bending resistance, good dynamic performance and the like.

As a preferred technical scheme of the utility model: the filling layer 5 comprises a silicon rubber material, and the outer surface of the filling layer 5 is adhered to the inner side wall of the inner protection pipe 2.

As a preferred technical scheme of the utility model: each insulating layer 8 is made of a PVC material, each cable core 3 is made of a plurality of stranded steel wires, and the outer surface of each cable core 3 is attached to the inner side wall of the insulating layer 8.

Those not described in detail in this specification are well within the skill of the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it should be noted that, in the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, may be fixedly connected or detachably connected; or indirectly through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations; it will be apparent to those skilled in the art that modifications and equivalents may be made in the embodiments and/or portions thereof without departing from the spirit and scope of the present invention.

Claims

1. The noninductive coaxial cable comprises a protective outer sleeve (1), and is characterized in that a spiral protective pipe (4) is wrapped inside the protective outer sleeve (1), an inner layer protective pipe (2) is wrapped on the inner side wall of the spiral protective pipe (4), a filling layer (5) is filled inside the inner layer protective pipe (2), a plurality of cable cores (3) are arranged inside the inner layer protective pipe (2), and an insulating layer (8) is wrapped on the outer surface of each cable core (3);

the inside of protective outer cover (1) is provided with fire prevention insulating layer (7), the surface of fire prevention insulating layer (7) is provided with wearing layer (6).

2. Noninductive coaxial cable according to claim 1, characterized in that the spiral protection tube (4) is made of elastic rubber;

the spiral protection pipe (4) is spirally adhered to the outer surface of the inner layer protection pipe (2).

3. The noninductive coaxial cable of claim 1, characterized in that the abrasion resistant layer (6) is made of a layer of butadiene rubber;

the outer surface of the wear-resistant layer (6) is coated with anti-corrosion paint.

4. The noninductive coaxial cable of claim 1, characterized in that the filler layer (5) comprises a silicone rubber material;

the outer surface of the filling layer (5) is adhered to the inner side wall of the inner layer protection pipe (2).

5. -the noninductive coaxial cable according to claim 1, characterized in that each of said insulating layers (8) is an insulating layer made of PVC material;

each cable inner core (3) is made of a plurality of stranded steel wires;

the outer surface of each cable inner core (3) is attached to the inner side wall of the insulating layer (8).