CN220509732U - Low-noise cable for aerospace - Google Patents

Abstract

The utility model discloses a low-noise cable for aviation and aerospace, which relates to the technical field of aviation and aerospace antenna cables and comprises a cable component, wherein the cable component comprises a polyimide sheath arranged on the outermost layer, a double-shielding layer is arranged on the inner wall of the polyimide sheath, a semiconductive layer is arranged on the inner wall of the double-shielding layer, an insulating layer is arranged on the inner wall of the semiconductive layer, and an inner conductor is arranged on the inner wall of the insulating layer. The polyimide sheath of the outermost layer has good insulativity, protects internal materials, can effectively shield the double shielding layers arranged in the polyimide sheath, takes the semiconductive layer arranged in the double shielding layers as external protection, and the insulating layer arranged in the semiconductive layer can effectively isolate electrical property, and the inner conductor arranged in the insulating layer has the characteristics of good electrical conductivity and the like; the four groups of insulating layers are distributed in the semiconductive layer according to the circumferential array, the semiconductive layer is used for protecting the insulating layer from the outside, and the insulating layer on the outer layer of the inner conductor can be effectively isolated.

Description

Low-noise cable for aerospace

Technical Field

The utility model relates to the technical field of electric cables for aerospace, in particular to a low-noise cable for aerospace.

Background

The cable is usually composed of several wires or groups of wires, each group of wires is insulated from each other, and the whole outer surface is covered with a high-insulation coating layer, and the cable has the characteristics of internal power-on and external insulation. Depending on the application, the cables are classified into power cables, control cables, compensation cables, shielding cables, high temperature cables, computer cables, signal cables, coaxial cables, fire resistant cables, marine cables, mining cables, aluminum alloy cables, aerospace cables, and the like. The existing aerospace generally adopts polytetrafluoroethylene and polyimide insulated wires and cables for aviation, and the cables all require low noise, and have excellent signal transmission performance and good fidelity. However, the existing aerospace cable is difficult to meet the requirements.

Disclosure of Invention

Based on this, the present utility model aims to provide a low noise cable for aerospace, so as to solve the technical problems set forth in the background above.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an aerospace is with low noise cable, includes cable subassembly, cable subassembly includes the polyimide sheath that the outer layer set up, polyimide sheath's inner wall is equipped with double shield layer, double shield layer's inner wall is equipped with the semiconductive layer, the inner wall of semiconductive layer is equipped with the insulating layer, the inner wall of insulating layer is provided with the inner conductor.

Preferably, four groups of insulating layers are arranged in the semiconductive layer, the four groups of insulating layers are distributed in the semiconductive layer according to a circumferential array, and four groups of inner conductors are arranged in the four groups of insulating layers.

Preferably, the material of the double shielding layer is braided aluminum and tinned annealed copper wire braided net.

Preferably, the material of the semiconductive layer is a mixed material.

Preferably, the insulating layer is made of XLPE crosslinked polyethylene.

Preferably, the inner conductor is made of tinned copper wire.

In summary, the utility model has the following advantages:

according to the utility model, the double shielding layers arranged in the polyimide sheath can be used for effective shielding, the semiconductive layer arranged in the double shielding layers is used as external protection, the insulating layer arranged in the semiconductive layer can be used for effectively isolating the electrical property, and the inner conductor arranged in the insulating layer has the characteristics of good electrical conductivity and the like; four groups of insulating layers are distributed in the semiconductive layer according to the circumferential array, the semiconductive layer is used for protecting the insulating layer from the outside, the insulating layer on the outer layer of the inner conductor can be effectively isolated, environmental noise is reduced, and signal fidelity is good.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic structural view of a polyimide sheath according to the present utility model;

FIG. 3 is a schematic diagram of a semiconductor layer according to the present utility model;

FIG. 4 is a schematic view of an insulating layer structure according to the present utility model;

FIG. 5 is a schematic view of the inner conductor structure of the present utility model;

fig. 6 is a cross-sectional elevation view of the present utility model.

In the figure: 100. a cable assembly;

110. a polyimide sheath; 120. a double shielding layer; 130. a semiconductive layer; 140. an insulating layer; 150. an inner conductor.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

Hereinafter, an embodiment of the present utility model will be described in accordance with its entire structure.

The low-noise cable for aerospace comprises a cable assembly 100, wherein the cable assembly 100 comprises a polyimide sheath 110 arranged on the outermost layer, a double shielding layer 120 is arranged on the inner wall of the polyimide sheath 110, a semi-conductive layer 130 is arranged on the inner wall of the double shielding layer 120, an insulating layer 140 is arranged on the inner wall of the semi-conductive layer 130, and an inner conductor 150 is arranged on the inner wall of the insulating layer 140.

The polyimide sheath 110 of outermost can protect interior material, and the double shield layer 120 of polyimide sheath 110 inside setting can carry out effectual shielding, and the semiconductive layer 130 of double shield layer 120 inside setting is as outside protection, and the insulating layer 140 of semiconductive layer 130 inside setting can be isolated the electrical property effectively, and the inner conductor 150 of insulating layer 140 inside setting has characteristics such as conductivity are good.

Referring to fig. 5 and 6, four sets of insulating layers 140 are disposed inside the semiconductive layer 130, the four sets of insulating layers 140 are distributed inside the semiconductive layer 130 according to a circumferential array, and four sets of inner conductors 150 are disposed inside the four sets of insulating layers 140.

The four groups of insulating layers 140 are distributed inside the semiconductive layer 130 according to a circumferential array, the semiconductive layer 130 serves as an external protection for the insulating layers 140, and the insulating layers 140 on the outer layer of the inner conductor 150 can be effectively isolated.

Referring to fig. 1 and 3, the double shielding layer 120 is made of a mesh of braided aluminum plus tin-plated annealed copper wire.

The double shielding layer is made of non-magnetic aluminum material and has very thin thickness, which is far smaller than the skin depth of metal material in use frequency, so as to raise the shielding effect of the cable.

Referring to fig. 1 and 4, the material of the semiconductive layer 130 is a mixed material.

The semiconductive layer 130 uses a mixed material, which is formed by tightly wrapping the semiconductive material around the outside of the conductive wire and tightly bonding with the insulating inner surface.

Referring to fig. 1 and 4, the insulating layer 140 is XLPE cross-linked polyethylene.

The insulating layer 140 uses XLPE crosslinked polyethylene to have excellent electrical insulation property, becomes a thermosetting material after being crosslinked by a polymer, and has good mechanical property and heat resistance; meanwhile, the novel solar energy collector has the advantages of simple structure, convenience in manufacturing, light specific gravity, convenience in laying and corrosion resistance.

Referring to fig. 1 and 5, the inner conductor 150 is made of tin-plated copper wire.

The inner conductor 150 has good conductivity, low cost, and good workability by using a tin-plated copper wire.

When the polyimide sheath 110 is used, the polyimide sheath 110 on the outermost layer protects the internal materials, the double shielding layers 120 arranged in the polyimide sheath 110 can effectively shield, the semiconductive layers 130 arranged in the double shielding layers 120 serve as external protection, the insulating layers 140 arranged in the semiconductive layers 130 can effectively isolate the electrical property, and the internal conductors 150 arranged in the insulating layers 140 have the characteristics of good electrical conductivity and the like; the four groups of insulating layers 140 are distributed inside the semiconductive layer 130 according to a circumferential array, the semiconductive layer 130 serves as an external protection for the insulating layers 140, and the insulating layers 140 on the outer layer of the inner conductor 150 can be effectively isolated.

Although embodiments of the utility model have been shown and described, the detailed description is to be construed as exemplary only and is not limiting of the utility model as the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples, and modifications, substitutions, variations, etc. may be made in the embodiments as desired by those skilled in the art without departing from the principles and spirit of the utility model, provided that such modifications are within the scope of the appended claims.

Claims (4)

1. A low noise cable for aerospace comprising a cable assembly (100), characterized in that: the cable assembly (100) comprises a polyimide sheath (110) arranged on the outermost layer, a double-shielding layer (120) is arranged on the inner wall of the polyimide sheath (110), a semiconductive layer (130) is arranged on the inner wall of the double-shielding layer (120), an insulating layer (140) is arranged on the inner wall of the semiconductive layer (130), and an inner conductor (150) is arranged on the inner wall of the insulating layer (140).

2. The low noise cable for aerospace of claim 1, wherein: four groups of insulating layers (140) are arranged inside the semiconductive layer (130), the four groups of insulating layers (140) are distributed inside the semiconductive layer (130) according to a circumferential array, and four groups of inner conductors (150) are arranged inside the four groups of insulating layers (140).

3. The low noise cable for aerospace of claim 1, wherein: the insulating layer (140) is made of XLPE crosslinked polyethylene.

4. The low noise cable for aerospace of claim 1, wherein: the inner conductor (150) is made of tinned copper wire.