CN210295984U

CN210295984U - Polyimide composite insulated wire

Info

Publication number: CN210295984U
Application number: CN201921781916.XU
Authority: CN
Inventors: 胡召卫
Original assignee: Tianjin Tiefulong Cable Technology Co Ltd
Current assignee: Tianjin Tiefulong Cable Technology Co Ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-04-10
Anticipated expiration: 2029-10-23

Abstract

The utility model discloses a polyimide composite insulated wire, which belongs to the technical field of wires and comprises an outer sheath, wherein the outer sheath is internally wrapped with an inner liner, the inner liner is internally wrapped with a copper mesh braided shielding layer, the copper mesh braided shielding layer is internally wrapped with a flame retardant coating, and the flame retardant coating is internally wrapped with a composite insulating layer; when the oversheath is impaired the back, thereby utilize compound insulating layer to reach the effect of internal insulation, polyethylene insulating layer can carry out the insulation of conductor simultaneously, utilize the mode of multiple insulation combination, thereby fundamentally solve the impaired back insulating nature decline problem of electric wire, the security when having improved the workman and having carried out the maintenance of not cutting off the power supply simultaneously, weave shielding layer and flame retardant coating through setting up the copper mesh, the electric current that the electric wire passes through is bigger, can produce magnetic field around the electric current, in order not to influence other component, thereby utilize the copper mesh to weave the shielding nature that improves electric wire self, utilize the flame retardant coating to improve the fire prevention temperature toleration of electric wire self simultaneously.

Description

Polyimide composite insulated wire

Technical Field

The utility model belongs to the technical field of the electric wire, concretely relates to polyimide composite insulation electric wire.

Background

The electric wire and cable is used for transmitting electric energy, information and wire products for realizing electromagnetic energy conversion, the generalized electric wire and cable is also called as cable for short, the narrow cable refers to an insulated cable, an aggregate consisting of the following parts, one or more insulated wire cores, a coating layer, a total protection layer and an outer sheath which may be respectively arranged on the insulated wire cores, and the cable also can be provided with an additional conductor without insulation.

At present, current electric wire is when using, generally needs the workman often to it overhaul etc. but, outdoor electric wire easily receives the influence of environment to the crust easily produces the condition such as breakage, leads to electric wire self insulating nature to reduce, has very big potential safety hazard when overhauing.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a polyimide composite insulation electric wire to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a polyimide composite insulation electric wire, includes the oversheath, the inside cladding of oversheath has the inner liner, the inside cladding of inner liner has the copper mesh to weave the shielding layer, the inside cladding that the shielding layer was woven to the copper mesh has the flame retardant coating, the inside cladding of flame retardant coating has composite insulation layer, composite insulation layer's inside is equipped with the filling layer, the cladding has the polyethylene insulating layer in the filling layer, the cladding has the conductor in the polyethylene insulating layer.

Adopt above-mentioned scheme, through setting up the oversheath, composite insulation layer and polyethylene insulation layer, after the oversheath is impaired, thereby utilize composite insulation layer to reach internal insulation's effect, polyethylene insulation layer can carry out the insulation of conductor simultaneously, utilize the mode of multiple insulation combination, thereby fundamentally solve the impaired back insulating nature decline problem of electric wire, the workman has improved the security when carrying out the maintenance of not cutting off the power supply simultaneously, weave shielding layer and flame retardant coating through setting up the copper mesh, the electric current that the electric wire passes through is bigger, can produce magnetic field around the electric current, for not influencing other component, thereby utilize the copper mesh to weave the shielding nature that improves electric wire self, utilize the flame retardant coating to improve the fire prevention temperature toleration nature of electric wire self simultaneously.

In a preferred embodiment, the material of the refractory layer is specifically asbestos.

By adopting the scheme, the asbestos consists of fiber bundles which are very long and thin fibers capable of being separated from each other, has high fire resistance, electrical insulation and heat insulation, is an important fire-proof, insulation and heat-preservation material, and improves the fire-proof temperature resistance of the electric wire.

As a preferred embodiment, the composite insulating layer mainly comprises a silicone rubber layer and a mica tape, and the mica tape is coated on the inner side wall of the silicone rubber layer.

By adopting the scheme, the silicon rubber has the advantages of high temperature resistance, low temperature resistance, excellent electrical insulation, high stability to thermal oxidation and ozone, large chemical inertia, and excellent high temperature resistance and combustion resistance, and the mica tape is a fire-resistant insulating material.

In a preferred embodiment, the outer sheath is made of polyimide.

By adopting the scheme, the polyimide has excellent mechanical property, and can protect the outside of the electric wire from being damaged easily.

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

this polyimide composite insulation electric wire is through setting up oversheath, composite insulation layer and polyethylene insulating layer, when the oversheath impaired back, thereby utilizes composite insulation layer to reach the effect of internal insulation, and the polyethylene insulating layer can carry out the insulation of conductor simultaneously, utilizes the mode that multiple insulation combines to solve the impaired back insulating decline problem of electric wire fundamentally, improved the security of workman when carrying out the maintenance of not cutting off the power supply simultaneously.

This polyimide composite insulation electric wire is through setting up copper mesh woven shield layer and flame retardant coating, and the electric current that the electric wire passes through is bigger, can produce magnetic field around the electric current, in order not to influence other components, thereby utilizes the copper mesh to weave the shielding nature that improves electric wire self, utilizes the flame retardant coating to improve the fire prevention temperature toleration of electric wire self simultaneously.

Drawings

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

fig. 2 is a schematic cross-sectional structure diagram of the composite insulating layer of the present invention.

In the figure: 1. an outer sheath; 2. an inner liner layer; 3. weaving a shielding layer by a copper net; 4. a refractory layer; 5. a composite insulating layer; 501. mica tapes; 502. a silicone rubber layer; 6. a filling layer; 7. a polyethylene insulating layer; 8. a conductor.

Detailed Description

The present invention will be further described with reference to the following examples.

The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention. The condition in the embodiment can be further adjusted according to concrete condition the utility model discloses a it is right under the design prerequisite the utility model discloses a simple improvement of method all belongs to the utility model discloses the scope of claiming.

Referring to fig. 1-2, the present invention provides a polyimide composite insulated wire, which includes an outer sheath 1, wherein the outer sheath 1 is made of polyimide (see fig. 1); the polyimide has excellent mechanical properties, and can protect the outside of the electric wire from being damaged.

The inner part of the outer sheath 1 is coated with an inner liner layer 2, the inner part of the inner liner layer 2 is coated with a copper mesh woven shielding layer 3, the inner part of the copper mesh woven shielding layer 3 is coated with a fire-resistant layer 4, and the fire-resistant layer 4 is made of asbestos (see figure 1); asbestos consists of fiber bundles which are very long and thin fibers capable of being separated from each other, has high fire resistance, electrical insulation and heat insulation, is an important fire-proof, insulation and heat-preservation material, and improves the fire-proof temperature resistance of the electric wire.

The composite insulating layer 5 is coated inside the fire-resistant layer 4, the composite insulating layer 5 mainly comprises a silicone rubber layer 502 and a mica tape 501, and the mica tape 501 is coated on the inner side wall of the silicone rubber layer 502 (see fig. 1 and 2); the silicon rubber is resistant to high temperature and low temperature, meanwhile, the electrical insulation performance is excellent, the stability to thermal oxidation and ozone is high, the chemical inertia is large, and the mica tape 501 is a fire-resistant insulating material and has excellent high-temperature resistance and combustion resistance.

A filling layer 6 is arranged inside the composite insulating layer 5, a polyethylene insulating layer 7 is covered in the filling layer 6, and a conductor 8 is covered in the polyethylene insulating layer 7.

When using, after oversheath 1 is impaired, thereby utilize composite insulation layer 5 to reach the effect of internal insulation, polyethylene insulation layer 7 can carry out the insulation of conductor 8 simultaneously, utilize the mode of multiple insulation combination, thereby fundamentally solve the impaired back insulating nature decline problem of electric wire, the security when having improved the workman and having carried out the maintenance of not cutting off the power supply simultaneously, reuse copper mesh to weave shielding layer 3 and flame retardant coating 4, because the electric current that the electric wire passes through is bigger, can produce magnetic field around the electric current, in order not to influence other component, thereby it improves the shielding nature of electric wire self to utilize the copper mesh to weave, utilize the flame retardant coating to improve the fire prevention temperature toleration nature of electric wire self simultaneously.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A polyimide composite insulated wire comprises an outer sheath (1), and is characterized in that: the inside cladding of oversheath (1) has inner liner (2), the inside cladding of inner liner (2) has copper mesh to weave shielding layer (3), the inside cladding that shielding layer (3) was woven to the copper mesh has flame retardant coating (4), the inside cladding of flame retardant coating (4) has composite insulation layer (5), the inside of composite insulation layer (5) is equipped with filling layer (6), the cladding has polyethylene insulating layer (7) in filling layer (6), the cladding has conductor (8) in polyethylene insulating layer (7).

2. The polyimide composite insulated wire of claim 1, wherein: the material of the fire-resistant layer (4) is specifically asbestos.

3. The polyimide composite insulated wire of claim 1, wherein: the composite insulating layer (5) mainly comprises a silicone rubber layer (502) and a mica tape (501), and the mica tape (501) is coated on the inner side wall of the silicone rubber layer (502).

4. The polyimide composite insulated wire of claim 1, wherein: the outer sheath (1) is made of polyimide.