CN213935676U

CN213935676U - Aerospace-grade series arc-resistant and irradiation-resistant novel composite insulated cable

Info

Publication number: CN213935676U
Application number: CN202023283716.7U
Authority: CN
Inventors: 陶远; 杨小峰; 姜茂盛; 高加云; 明观涛; 刘波; 黄双双
Original assignee: Anhui Hongyuan Special Cable Group Co ltd
Current assignee: Anhui Hongyuan Special Cable Group Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-08-10
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a novel compound insulation cable of resistant serial arc irradiation resistance of aerospace level, including multiunit silver-plated copper conductor, silver-plated copper conductor is formed by the concentric transposition of stranded silver-plated copper wire, the outside fixedly connected with inner insulating layer of silver-plated copper conductor, inner insulating layer passes through the crowded package of ethylene-tetrafluoroethylene copolymer and forms in the outside of silver-plated copper conductor, inner insulating layer's external connection has the outer insulating layer, the outer insulating layer passes through the compound outside of taking around package shaping in inner insulating layer of polyimide. The utility model discloses an adopt the polyimide composite band of surface coating hot melt adhesion agent to form the outer insulating layer around package and hot melt seal, under the hot melt seal temperature, hot melt adhesion agent melts for the polyimide composite band can be easily taken the lid around the package on the surface of the inner insulating layer that ethylene-tetrafluoroethylene copolymer formed, and then forms double-deck insulation system, very big improvement the insulating properties of cable.

Description

Aerospace-grade series arc-resistant and irradiation-resistant novel composite insulated cable

Technical Field

The utility model relates to the technical field of cables, concretely relates to novel compound insulation cable of resistant serial arc irradiation of aerospace level.

Background

The application of the wire and cable in the aerospace field is still in the initial development stage, the main reason is that the aerospace environment has high requirements on the wire, the aerospace wire has severe use environment, and the wire and cable often needs to be resistant to moisture, hydrolysis, wear, irradiation and flame, can also be resistant to arc crossing, resistant to oxygen atoms and capable of being peeled off between insulating layers, and the wire and cable has the following requirements that the weight is as light as possible, and the current aerospace wire and cable mainly has two series: the polyimide-fluorine 46 composite film lapped and sintered insulated cable is mainly used for helicopters, is made in China, and is still imported in consideration of the quality of electric wires, the composite film is not suggested to be adopted in the aspect of navy in the United states, yet to be observed in future, the other type is an irradiation cross-linked ethylene-tetrafluoroethylene copolymer insulated cable, the cable is a novel aerospace-grade serial arc-resistant irradiation-resistant composite insulated cable which is used by military and civil large-scale airplanes in the near future, but the manufacturing technology is difficult to prepare, and therefore the cable has a good insulating effect and high structural strength.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel compound insulation cable of resistant serial arc irradiation resistance of aerospace level to solve the above-mentioned weak point among the prior art.

In order to achieve the above object, the present invention provides the following technical solutions: an aerospace-grade serial-arc-resistant radiation-resistant novel composite insulated cable comprises a plurality of groups of silver-plated copper conductors, wherein each silver-plated copper conductor is formed by concentrically twisting a plurality of strands of silver-plated copper wires, the outer part of the silver-plated copper conductor is fixedly connected with an inner insulating layer which is extruded and formed on the outer part of the silver-plated copper conductor through ethylene-tetrafluoroethylene copolymer, the outer insulating layer is connected with the outer insulating layer, the outer insulating layer is formed on the outer portion of the inner insulating layer in a wrapping mode through a polyimide composite tape, a plurality of groups of silver-plated copper conductors are wound and wound through aramid fibers to form a cable core set, silver-plated copper wire shielding layers are arranged on the outer portions of the silver-plated copper conductors, the silver-plated copper wire shielding layer is woven and formed outside the multiple groups of silver-plated copper conductors, an outer sheath layer is fixedly connected outside the silver-plated copper wire shielding layer, the outer sheath layer is formed outside the silver-plated copper wire shielding layer in an extrusion coating mode through ethylene-tetrafluoroethylene copolymer.

Preferably, a hot-melt adhesive is coated between the outer insulating layer and the inner insulating layer, the outer insulating layer is provided with three layers, and the thickness of each layer of the outer insulating layer is 0.03-0.05 mm.

Preferably, the silver-plated copper wire shielding layer is of a net-shaped weaving structure, the weaving density of the net-shaped structure of the silver-plated copper wire shielding layer is greater than 85%, and the weaving angle is 50-72 degrees.

Preferably, the thickness of the inner insulating layer is set to be 0.10-0.15 mm, and the thickness of the outer sheath layer is set to be 0.03-0.05 mm.

Preferably, rubber particles are filled between the silver-plated copper wire shielding layer and the silver-plated copper conductor, and the particle diameter of the rubber particles in the silver-plated copper wire shielding layer is smaller than 0.1 mm.

In the technical scheme, the utility model provides a technological effect and advantage:

the utility model discloses a through adopting many silver-plated copper wires transposition to make silver-plated copper conductor, and then can reduce wire surface resistance, improve the electric conductivity of cable on the whole, and form the outer insulating layer through adopting the polyimide composite band of surface coating hot melt adhesive to wrap around and heat seal, under the hot melt sealing temperature, hot melt adhesive melts, make polyimide composite band can overlap easily on the surface of the inner insulating layer that ethylene-tetrafluoroethylene copolymer formed and wrap around, and then form double-deck insulation structure, greatly improved the insulating properties of cable, and adopt silver-plated round copper wire to weave outside the core line group and form silver-plated copper wire shielding layer, and then can make the cable have good shielding interference ability, anti electron radiation ability, and because the utility model discloses well inner insulating layer, outer insulating layer are the material that density is low, under the condition of the same thickness, the weight of the cable can be reduced by one third compared with the common cable.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

Fig. 1 is a cross-sectional view of the present invention.

Description of reference numerals:

1. a silver-plated copper conductor; 2. an inner insulating layer; 3. an outer insulating layer; 4. a silver-plated copper wire shielding layer; 5. an outer jacket layer.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.

The utility model provides a novel aerospace-grade serial arc-resistant radiation-resistant composite insulated cable as shown in figure 1, which comprises a plurality of groups of silver-plated copper conductors 1, wherein each silver-plated copper conductor 1 is formed by concentrically twisting a plurality of strands of silver-plated copper wires, an inner insulating layer 2 is fixedly connected to the outer part of each silver-plated copper conductor 1, the inner insulating layer 2 is extruded and formed on the outer part of each silver-plated copper conductor 1 through ethylene-tetrafluoroethylene copolymer, an outer insulating layer 3 is connected to the outer part of each inner insulating layer 2, the outer insulating layer 3 is wound and formed on the outer part of each inner insulating layer 2 through polyimide composite tapes, a plurality of groups of silver-plated copper conductors 1 are wound and formed into cable cores through aramid wires, a plurality of groups of silver-plated copper wire shielding layers 4 are arranged on the outer part of each silver-plated copper conductor 1, the silver-plated copper wire shielding layers 4 are woven and formed on the outer parts of the groups of silver-plated copper wire shielding layers 4, the outer sheath layer 5 is formed outside the silver-plated copper wire shielding layer 4 through extrusion coating of ethylene-tetrafluoroethylene copolymer;

further, in the above technical scheme, a hot melt adhesive is coated between the outer insulating layer 3 and the inner insulating layer 2, the outer insulating layer 3 has three layers, and the thickness of each layer of the outer insulating layer 3 is 0.03-0.05 mm;

further, in the technical scheme, the silver-plated copper wire shielding layer 4 adopts a net-shaped weaving structure, the weaving density of the net-shaped structure of the silver-plated copper wire shielding layer 4 is more than 85%, and the weaving angle is between 50 and 72 degrees;

further, in the above technical solution, the thickness of the inner insulating layer 2 is set to be 0.10-0.15 mm, and the thickness of the outer sheath layer 5 is set to be 0.03-0.05 mm;

further, in the above technical scheme, rubber particles are filled between the silver-plated copper wire shielding layer 4 and the silver-plated copper conductor 1, and the particle diameter of the rubber particles inside the silver-plated copper wire shielding layer 4 is less than 0.1 mm;

the implementation mode is specifically as follows: the silver-plated copper conductors 1 are stranded by adopting a plurality of silver-plated copper wires to manufacture the silver-plated copper conductors 1, so that the surface resistance of the lead can be reduced, the conductive capacity of the cable is integrally improved, the polyimide composite tape coated with the hot-melt adhesive is wrapped and hot-melt sealed to form the outer insulating layer 3, the hot-melt adhesive is melted at the hot-melt sealing temperature, so that the polyimide composite tape can be easily lapped and wrapped on the surface of the inner insulating layer 2 formed by the ethylene-tetrafluoroethylene copolymer, meanwhile, the inner insulating layer 2 and the outer insulating layer 3 are conveniently stripped from each other at the later stage, so that a double-layer insulating structure is formed, the insulating performance of the cable is greatly improved, then 3-6 groups of silver-plated copper conductors 1 are stranded into a core wire group, and after the aramid wires are wound and combined, silver-plated round copper wires are woven outside the core wire group to form a silver-plated copper wire shielding layer 4, so that the cable has good interference shielding capacity, the outer sheath layer 5 is formed by irradiating, crosslinking and extruding ethylene-tetrafluoroethylene copolymer ETFE material, and the three materials of the polytetrafluoroethylene, the polyimide composite belt and the ethylene-tetrafluoroethylene copolymer ETFE have excellent performances of high flame retardance, moisture resistance, hydrolysis resistance, wear resistance and irradiation resistance, further, the cable can meet the harsh requirements of the aerospace field on electric wires, the outer insulating layer 3 formed by the polyimide composite belt has excellent mechanical property, electrical property, chemical stability and high radiation resistance, the defects that the pure polyimide is not resistant to serial arcs and oxygen atoms are overcome, and because the inner insulating layer 2 and the outer insulating layer 3 are made of materials with low density in the utility model, the cable can be reduced by one third in weight compared with the common cable under the condition of the same thickness.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. The utility model provides a novel compound insulated cable of resistant serial arc irradiation resistance of aerospace level, includes multiunit silvered copper conductor (1), its characterized in that: the cable core wire set is characterized in that the silver-plated copper conductor (1) is formed by concentrically twisting multiple strands of silver-plated copper wires, an inner insulating layer (2) is fixedly connected to the outer portion of the silver-plated copper conductor (1), the inner insulating layer (2) is formed on the outer portion of the silver-plated copper conductor (1) in an extrusion wrapping mode through ethylene-tetrafluoroethylene copolymer, an outer insulating layer (3) is connected to the outer portion of the inner insulating layer (2), the outer insulating layer (3) is formed on the outer portion of the inner insulating layer (2) in a wrapping mode through polyimide composite tapes, multiple groups of silver-plated copper conductors (1) are wound and wound through aramid fibers to form a cable core wire set, silver-plated copper wire shielding layers (4) are arranged on the outer portions of the multiple groups of silver-plated copper conductors (1), the silver-plated copper wire shielding layers (4) are formed on the outer portions of the multiple groups of silver-plated copper conductors (1) in a weaving mode, and outer sheath layers (5) are fixedly connected to the outer portions of the silver-plated copper wire shielding layers (4), the outer sheath layer (5) is formed outside the silver-plated copper wire shielding layer (4) in an extrusion coating mode through ethylene-tetrafluoroethylene copolymer.

2. The aerospace-grade serial arc radiation resistant novel composite insulated cable according to claim 1, characterized in that: the hot-melt adhesive is coated between the outer insulating layer (3) and the inner insulating layer (2), the outer insulating layer (3) is provided with three layers, and the thickness of each layer of the outer insulating layer (3) is 0.03-0.05 mm.

3. The aerospace-grade serial arc radiation resistant novel composite insulated cable according to claim 1, characterized in that: the silver-plated copper wire shielding layer (4) is of a net-shaped weaving structure, the weaving density of the net-shaped structure of the silver-plated copper wire shielding layer (4) is more than 85%, and the weaving angle is 50-72 degrees.

4. The aerospace-grade serial arc radiation resistant novel composite insulated cable according to claim 1, characterized in that: the thickness of the inner insulating layer (2) is set to be 0.10-0.15 mm, and the thickness of the outer sheath layer (5) is set to be 0.03-0.05 mm.

5. The aerospace-grade serial arc radiation resistant novel composite insulated cable according to claim 1, characterized in that: rubber particles are filled between the silver-plated copper wire shielding layer (4) and the silver-plated copper conductor (1), and the particle diameter of the rubber particles in the silver-plated copper wire shielding layer (4) is smaller than 0.1 mm.