CN216928127U

CN216928127U - Rubber braided flexible electric wire with shielding sheath

Info

Publication number: CN216928127U
Application number: CN202220811161.9U
Authority: CN
Inventors: 金成俊; 张艳菁
Original assignee: Hangzhou Xiaoshan Jinfeng Wire And Cable Co ltd
Current assignee: Hangzhou Xiaoshan Jinfeng Wire And Cable Co ltd
Priority date: 2022-04-10
Filing date: 2022-04-10
Publication date: 2022-07-08
Anticipated expiration: 2032-04-10

Abstract

The utility model belongs to the technical field of electric wires, and relates to a rubber woven flexible electric wire with a shielding sheath. Set up the tensile cord and can provide sufficient stretching resistance for the cable, make it still can use in special environment, the annular of setting can make the fixed more firm of internal insulation rubber and tensile cord, prevent that the internal insulation rubber from damaging or sliding and lead to tensile cord electrified, lead to the damage of cable, the flame retardant coating of setting adopts synthetic mica, its effect is that the cable can stand for a certain time in the conflagration, give people the time of more power consumption when fleing, because of mica sheet high temperature resistance of mica tape, and have insulating effect again, can protect the conductor operation for a certain time in the conflagration.

Description

Rubber braided flexible electric wire with shielding sheath

Technical Field

The utility model belongs to the technical field of electric wires, and particularly relates to a rubber braided flexible electric wire with a shielding sheath.

Background

With the development of automation, intellectualization and safety of an electric power system, the inherent quality requirement of a cable for a control system is gradually improved, particularly for instrument signal control systems in special industries such as mines, steel, chemical engineering, ships, oil platforms, port machinery, ocean engineering and the like or special use occasions with higher requirements on installation and laying flexibility, tensile dragging resistance and bending torsion capacity, the traditional control cable has poor bending flexibility, small bearing capacity and short service life and cannot meet the requirements on use environments with complex working conditions such as mineral oil, solvent, ozone and the like and use conditions of frequent dragging and frequent moving operation such as mines, rocks and the like, thereby seriously threatening the normal operation of electric control equipment and the electric power system and the safety of personal property, however, the rubber braided flexible wire with a shielding sheath on the market still has various defects, the production requirements cannot be met.

The existing cable has the problems of poor electromagnetic interference resistance, incapability of ensuring accurate and stable signal instruction transmission, poor fire prevention and flame retardance and low pulling resistance, and provides a rubber braided flexible wire with a shielding sheath.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a rubber braided flexible wire with a shielding sheath, and aims to solve the problems that a cable has poor electromagnetic interference resistance, cannot ensure accurate and stable signal instruction transmission, has poor fire resistance and flame retardance and has low pulling resistance in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the rubber woven flexible electric wire with the shielding sheath comprises a tensile wire, wherein inner insulating rubber is sleeved on the outer surface of the tensile wire, a copper wire is wound on the outer surface of the inner insulating rubber, and a fire-resistant layer, outer insulating rubber, an inner bushing, a shielding layer and an outer sheath are respectively bonded on the outer surface of the copper wire from inside to outside.

Preferably, the tensile wire is a steel wire, and a ring groove is formed on the outer surface of the tensile wire.

Preferably, the outer surface of the fire-resistant layer is bonded to the inner surface of the outer insulating rubber, and the fire-resistant layer contains a double-layer synthetic mica.

Preferably, the outer surface of the outer insulating rubber is bonded to the inner surface of the inner bushing, and the inner bushing is filled with polyurethane.

Preferably, the outer surface of the inner lining is bonded with the inner surface of the shielding layer, and the shielding layer is a copper wire weave.

Preferably, the outer surface of the shielding layer is bonded with the inner surface of the outer sheath, and the outer sheath is made of polyurethane material.

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

1. can provide sufficient stretching resistance for the cable through setting up the tensile line, make it still can use in special environment, the annular of setting can make the fixed more firm of inner insulating rubber and tensile line, prevent that inner insulating rubber from damaging or sliding and lead to tensile line electrified, lead to the damage of cable, the flame retardant coating of setting adopts synthetic mica, its effect is that the cable can stand for a certain time in the conflagration, give people the time of more power consumption when fleing, because of the mica sheet high temperature resistant of mica tape, and have insulating effect again, can protect conductor operation for a certain time in the conflagration, the outer insulating rubber of setting is that the conductor sinle silk that is used for protecting the cable is not damaged, guarantee the operation work that the cable can be normal, also prevent the problem of cable electric leakage simultaneously.

2. The inner lining is a protective covering layer covering the cable insulating layer, which is used for preventing the insulating layer from being affected by moisture, mechanical damage, light and chemical aggressive media, and short-circuit current can also flow through, the outer sheath is a protective layer covering the shielding layer, which mainly plays a role in mechanical strengthening and corrosion prevention, the shielding layer can be arranged to have larger current passing through the power cable, a magnetic field can be generated around the current, so as not to affect other elements, the shielding layer can shield the electromagnetic field in the cable, if the cable core wire is damaged, the leaked current can flow along the shielding layer like a grounding net, at the moment, the shielding layer plays a role in safety protection, and the problem that the external electromagnetic wave interferes with signals is prevented.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic structural diagram of the flame retardant coating and the outer insulating rubber of the present invention;

FIG. 3 is a schematic view showing the structure of the outer insulating rubber and the inner liner of the present invention;

FIG. 4 is a schematic view of the construction of an innerliner and shield of the present invention;

fig. 5 is a schematic structural view of the shielding layer and the outer sheath of the present invention.

In the figure: 1. resisting the pulling wire; 2. an inner insulating rubber; 3. a copper wire; 4. a refractory layer; 5. an outer insulating rubber; 6. an inner liner; 7. a shielding layer; 8. an outer sheath.

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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a rubber woven flexible electric wire with shielding sheath, includes tensile cord 1, and the surface cover of tensile cord 1 is equipped with interior insulating rubber 2, and the surface winding of interior insulating rubber 2 has copper line 3, and the surface of copper line 3 bonds respectively from inside to outside has flame retardant coating 4, outer insulating rubber 5, neck bush 6, shielding layer 7 and oversheath 8.

In the embodiment, the tensile wire 1 is arranged to provide enough tensile resistance for the cable, so that the cable can still be used in a special environment, the arranged ring groove can ensure that the inner insulating rubber 2 and the tensile wire 1 are more firmly fixed, the damage of the cable caused by the fact that the inner insulating rubber 2 is damaged or the tensile wire 1 is electrified due to sliding is prevented, the arranged fire-resistant layer 4 adopts synthetic mica which has the function of protecting the conductor from running for a certain time in a fire disaster and has the function of protecting the conductor core of the cable from being damaged due to the fact that the mica sheet of the mica tape is high-temperature resistant and has the insulation function and can protect the conductor from running for a certain time in the fire disaster, the arranged outer insulating rubber 5 is used for protecting the conductor core of the cable from being damaged, the normal running work of the cable is ensured, meanwhile, the electric leakage of the cable is prevented, and the arranged inner lining 6 is a protective covering layer covering the insulating layer of the cable, the protective sheath 8 is a protective layer covering the shielding layer 7 and mainly plays a role in mechanical strengthening and corrosion prevention, the shielding layer 7 can pass a large current in a power cable, a magnetic field can be generated around the current, and other elements are not influenced.

Specifically, the tensile cord 1 is a steel wire, and the outer surface of the tensile cord 1 is provided with a ring groove.

In this embodiment, set up tensile cord 1 and can provide sufficient stretching resistance for the cable, make it still can use in special environment, the annular of setting can make the fixed more firm of internal insulation rubber 2 and tensile cord 1, prevents that internal insulation rubber 2 from damaging or sliding to lead to tensile cord 1 electrified, leads to the damage of cable.

Specifically, the outer surface of the flame retardant coating 4 is bonded to the inner surface of the outer insulating rubber 5, and the flame retardant coating 4 contains a double-layer synthetic mica.

In the embodiment, the fire-resistant layer 4 is made of synthetic mica, the cable can stand for a certain time in a fire disaster, and the time for using electricity is prolonged when people escape.

Specifically, the outer surface of the outer insulating rubber 5 is bonded to the inner surface of the inner liner 6, and the inner liner 6 is filled with polyurethane.

In this embodiment, the inner liner 6 is a protective covering layer covering the cable insulating layer, and is used to prevent the insulating layer from being affected by moisture, mechanical damage, light and chemically aggressive media, and short-circuit current can also flow through the inner liner, and the outer insulating rubber 5 is used to protect the conductor core of the cable from being damaged, thereby ensuring normal operation of the cable and preventing electric leakage of the cable.

Specifically, the outer surface of the inner bushing 6 is bonded to the inner surface of the shielding layer 7, and the shielding layer 7 is a copper wire braid.

In this embodiment, the shielding layer 7 may have a relatively large current passing through the power cable, and a magnetic field may be generated around the current, so as not to affect other elements, the shielding layer 7 may be added to shield the electromagnetic field in the cable, and if a cable core is damaged, the leaked current may flow along the shielding layer 7 as a grounding grid, and at this time, the shielding layer 7 plays a role of safety protection, and prevents external electromagnetic waves from interfering signals.

Specifically, the outer surface of the shielding layer 7 is bonded to the inner surface of the outer sheath 8, and the outer sheath 8 is made of polyurethane material.

In this embodiment, the outer sheath 8 is a protective layer covering the shielding layer 7, and mainly plays a role in mechanical reinforcement and corrosion prevention.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A rubber-braided cord with a shielding sheath, comprising a tensile cord (1), characterized in that: the outer surface cover of tensile wire (1) is equipped with interior insulating rubber (2), the surface winding of interior insulating rubber (2) has copper line (3), the surface of copper line (3) bonds respectively from inside to outside has flame retardant coating (4), outer insulating rubber (5), neck bush (6), shielding layer (7) and oversheath (8).

2. A rubber-braided cord with a shield sheath according to claim 1, characterized in that: the tensile wire (1) is a steel wire, and the outer surface of the tensile wire (1) is provided with a ring groove.

3. A rubber-braided cord with a shield sheath according to claim 1, characterized in that: the outer surface of the fire-resistant layer (4) is bonded with the inner surface of the outer insulating rubber (5), and the fire-resistant layer (4) contains double-layer synthetic mica.

4. A rubber-braided cord with a shield sheath according to claim 1, characterized in that: the outer surface of the outer insulating rubber (5) is bonded with the inner surface of the inner bushing (6), and the inner bushing (6) is filled with polyurethane.

5. A rubber-braided cord with a shield sheath according to claim 1, characterized in that: the outer surface of the inner bushing (6) is bonded with the inner surface of the shielding layer (7), and the shielding layer (7) is made of copper wire weaving.

6. A rubber-braided cord with a shield sheath according to claim 1, characterized in that: the outer surface of the shielding layer (7) is bonded with the inner surface of the outer sheath (8), and the outer sheath (8) is made of polyurethane material.