CN213211740U

CN213211740U - Insulated cable for aerospace

Info

Publication number: CN213211740U
Application number: CN202021863639.XU
Authority: CN
Inventors: 黄桂领; 张天成; 王世军; 范明勇
Original assignee: Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
Current assignee: Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-05-14
Anticipated expiration: 2030-08-31

Abstract

The utility model relates to the technical field of cables, the utility model discloses an insulated cable that space flight and aviation was used, including cable body (1), cable body (1) includes sheath (2) and many insulation core (3) of establishing in sheath (2), insulation core (3) include conductor (4) that from interior to exterior set gradually, around covering (5), first insulation layer (6), second insulating layer (7), conductor (4) are formed by the transposition of tinned wire, make by the polyimide film around covering (5), first insulation layer (6) are made by gathering perfluor ethylene propylene material, second insulating layer (7) are made by polyvinylidene fluoride propylene material, elastic layer (8) that are equipped with between sheath (2) and insulation core (3), elastic layer (8) are constituteed by many elastic tube (9) round sheath (2) axis annular equipartition setting. The utility model discloses satisfy the requirement of aerospace equipment to cable reliability, improve stability and the security that the cable body used.

Description

Insulated cable for aerospace

Technical Field

The utility model relates to the technical field of cables, especially, relate to an insulated cable that space flight and aviation was used.

Background

With the continuous development of the national aerospace industry, a large number of aerospace electronic devices are independently developed, and the market demand of supporting wires for aerospace devices is gradually increased. At present, the electric wire for domestic aerospace equipment adopts imported products, which account for a large proportion. The utility model discloses a cable for space flight and aviation is disclosed as chinese utility model patent CN201320084560.0, wrap up in proper order including many insulation core and from interior to exterior the armor shielding layer, insulating layer, the restrictive coating of many insulation core, insulation core includes conductor and the insulating layer of parcel outside every conductor, the armor shielding layer with be provided with the filling layer between the insulating layer, the insulating layer is made for polytetrafluoroethylene insulating material, the conductor is stranded conductor. The cable insulating layer for aerospace in the patent adopts polytetrafluoroethylene, and its insulating properties can not be better satisfy the requirement of aerospace to cable insulation, and mechanical properties is also relatively poor.

Disclosure of Invention

The utility model discloses to the shortcoming that space flight cable uses the reliability to hang down among the prior art, provide an insulating cable that space flight cable used that the reliability is high for space flight and aviation.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

the utility model provides an insulated cable that space flight and aviation was used, including the cable body, the cable body includes sheath and many insulation core of establishing in the sheath, insulation core includes from interior to exterior the conductor that sets gradually, around the covering, the first insulation layer, the second insulating layer, the conductor is formed by the tinned wire transposition, be made by the polyimide film around the covering, the first insulation layer is made by gathering perfluor ethylene propylene material, the second insulating layer is made by polyvinylidene fluoride propylene material, the elastic layer that is equipped with between sheath and the insulation core, the elastic layer comprises many elastic tubes round the annular equipartition of sheath axis setting. The conductor adopts a tinned copper wire, so that the conductor has good corrosion resistance, oxidation resistance and weldability; the conductor is wrapped by the polyimide film, so that the insulating property of the conductor is improved, no obvious melting point or softening point exists, the conductor is resistant to ozone and corrosion, and the stability of the conductor in use is improved; the first insulation layer plays main insulating effect to the conductor, the second insulation layer plays supplementary insulating effect to the conductor, adopt and gather perfluor ethylene propylene and polyvinylidene fluoride propylene to form double-deck combination insulation, because it has low temperature resistant and high temperature resistance ability concurrently to gather perfluor ethylene propylene and polyvinylidene fluoride propylene, and acid and alkali resistance, wet-proof heat, resistant mould, salt fog resistance, the performance is splendid, satisfy the high requirement of aerospace equipment reliability, improve the holistic compressive property of cable body through setting up the elastic layer, receive striking or extrusion back at the cable body, form the buffering through the elastic tube, strengthen the mechanical properties of cable body, improve stability and the security that insulating core used.

Preferably, the thickness of the second insulating layer is smaller than the thickness of the first insulating layer. Under the condition of ensuring to improve the insulating property, the space in the cable body is ensured, and the wire diameter of the cable body is reduced.

Preferably, the middle part of the elastic tube is provided with a through hole which is concentric with the elastic tube. The through holes are arranged to improve the buffering performance of the elastic tube.

Preferably, the cable body further comprises an outer sheath and an inner sheath arranged in the sheath, and the elastic layer is located between the outer sheath and the inner sheath. The elastic layer plays the effect of location through outer jacket and interior sheath, guarantees the stability of elastic layer position when the elastic layer warp.

Preferably, the cable body further comprises a shielding layer and a filling layer, the shielding layer is located in the inner protection layer, and the filling layer is filled between the shielding layer and the insulated wire core. Through setting up the isolated signal interference to insulating sinle silk of shielding layer, improve insulating sinle silk at the during operation signal transmission's precision.

The utility model discloses owing to adopted above technical scheme, have apparent technological effect: the polyimide film wraps the conductor, so that the insulating property of the conductor is improved, the polyimide film has no obvious melting point and softening point, is ozone-resistant and corrosion-resistant, and improves the stability of the conductor in use; adopt and gather perfluor ethylene propylene and polyvinylidene fluoride propylene and form double-deck combination insulation, satisfy the high requirement of aerospace equipment reliability, receive striking or extrusion back at the cable body, form the buffering through the elastic tube, improve stability and the security that the insulation core used.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of an insulated wire core.

Fig. 3 is a schematic view of the structure of the elastic tube.

The names of the parts indicated by the numerical references in the drawings are as follows: 1-cable body, 2-sheath, 3-insulation core, 4-conductor, 5-around covering, 6-first insulation layer, 7-second insulation layer, 8-elastic layer, 9-elastic tube, 10-through hole, 11-outer jacket, 12-inner jacket, 13-shielding layer, 14-filling layer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1

An insulated cable for aerospace use, as shown in fig. 1 to 3, includes a cable body 1, and is characterized in that: cable body 1 includes sheath 2 and many insulation core 3 of establishing in sheath 2, insulation core 3 includes from interior to exterior conductor 4 that sets gradually, around covering 5, first insulation layer 6, second insulation layer 7, conductor 4 is formed by the transposition of tinned wire, it is made by the polyimide film to wind covering 5, first insulation layer 6 is made by gathering perfluor ethylene propylene material, second insulation layer 7 is made by polyvinylidene fluoride propylene material, the thickness of second insulation layer 7 is less than the thickness of first insulation layer 6, the elastic layer 8 that is equipped with between sheath 2 and the insulation core 3, elastic layer 8 comprises many elastic tubes 9 that set up round 2 axis annular equipartitions of sheath, through-hole 10 with the concentric setting of elastic tube 9 is seted up at the middle part of elastic tube 9.

Example 2

The cable body 1 further comprises an outer protective layer 11 and an inner protective layer 12 which are arranged in the sheath 2, the elastic layer 8 is located between the outer protective layer 11 and the inner protective layer 12, and the elastic layer 8 is fully distributed between the outer protective layer 11 and the inner protective layer 12.

Example 3

The utility model provides an insulated cable that space flight and aviation was used, as shown in fig. 1 to fig. 3, including cable body 1, cable body 1 includes sheath 2 and many insulation core 3 of establishing in sheath 2, insulation core 3 includes conductor 4 that from interior to exterior set gradually, around covering 5, first insulation layer 6, second insulation layer 7, conductor 4 is formed by the transposition of tinned wire, it is made by the polyimide film to wind covering 5, first insulation layer 6 is made by gathering perfluor ethylene propylene material, second insulation layer 7 is made by polyvinylidene fluoride propylene material, the thickness of second insulation layer 7 is less than the thickness of first insulation layer 6, the elastic layer 8 that is equipped with between sheath 2 and the insulation core 3, elastic layer 8 comprises many elastic tubes 9 that set up round 2 axis annular equipartitions of sheath, through-hole 10 with the concentric setting of elastic tube 9 is seted up at the middle part of elastic tube 9.

The cable body 1 further comprises a shielding layer 13 and a filling layer 14, the shielding layer 13 is formed by weaving tin-copper wires, the shielding layer 13 is located in the inner sheath layer 12, and the filling layer 14 is filled between the shielding layer 13 and the insulated wire core 3.

Claims

1. An insulated cable for aerospace, comprising a cable body (1), characterized in that: cable body (1) includes sheath (2) and many insulation core (3) of establishing in sheath (2), insulation core (3) include conductor (4) that from interior to exterior set gradually, around covering (5), first insulation layer (6), second insulation layer (7), conductor (4) are formed by the tinned wire transposition, make by the polyimide film around covering (5), first insulation layer (6) are made by gathering perfluor ethylene propylene material, second insulation layer (7) are made by polyvinylidene fluoride propylene material, elastic layer (8) that are equipped with between sheath (2) and insulation core (3), elastic layer (8) are constituteed by many elastic tube (9) round sheath (2) axis annular equipartition setting.

2. An insulated aerospace cable according to claim 1, wherein: the thickness of the second insulating layer (7) is smaller than the thickness of the first insulating layer (6).

3. An insulated aerospace cable according to claim 1, wherein: the middle part of the elastic tube (9) is provided with a through hole (10) which is concentric with the elastic tube (9).

4. An insulated aerospace cable according to claim 1, wherein: the cable body (1) further comprises an outer protective layer (11) and an inner protective layer (12) which are arranged in the sheath (2), and the elastic layer (8) is located between the outer protective layer (11) and the inner protective layer (12).

5. An insulated aerospace cable according to claim 4, wherein: the cable body (1) further comprises a shielding layer (13) and a filling layer (14), the shielding layer (13) is located in the inner protection layer (12), and the filling layer (14) is filled between the shielding layer (13) and the insulating wire core (3).