阅读说明：本技术 一种航空航天用耐火电缆 (Fire-resistant cable for aerospace ) 是由 吕海娜 于 2020-06-09 设计创作，主要内容包括：本发明属于电缆领域,尤其是一种航空航天用耐火电缆,包括电缆本体,所述电缆本体包括多个电缆芯,电缆芯的外侧套设有保护层,多个电缆芯的外侧套设有同一个绝缘层,绝缘层的外侧设有防火层,防火层的外侧设有耐热层,耐热层的外侧设有防水层,防水层的外侧设有防扭曲层,防扭曲层的外侧设有抗拉伸层,抗拉伸层的外侧设有保护套,抗拉伸层的外侧固定安装有多个缓冲座,缓冲座上开设有第一槽,第一槽内滑动安装有滑动柱的一端,滑动柱的另一端固定安装在保护套上。本发明设计合理,结构简单,操作方便,由于设置有防火层和耐热层,能够使得电缆本体在高温下进行使用,且电缆本体的抗扭曲性和抗拉伸形强。(The invention belongs to the field of cables, and particularly relates to a fire-resistant cable for aerospace, which comprises a cable body, wherein the cable body comprises a plurality of cable cores, a protective layer is sleeved outside the cable cores, the outer sides of the cable cores are sleeved with the same insulating layer, a fire-proof layer is arranged outside the insulating layer, a heat-resistant layer is arranged outside the fire-proof layer, a waterproof layer is arranged outside the heat-resistant layer, an anti-distortion layer is arranged outside the waterproof layer, an anti-stretching layer is arranged outside the anti-distortion layer, a protective sleeve is arranged outside the anti-stretching layer, a plurality of buffer seats are fixedly installed outside the anti-stretching layer, a first groove is formed in each buffer seat, one end of a sliding column is slidably installed in each first groove, and the other end of the sliding. The cable provided by the invention has the advantages of reasonable design, simple structure and convenience in operation, the cable body can be used at a high temperature due to the arrangement of the fireproof layer and the heat-resistant layer, and the cable body is strong in distortion resistance and tensile resistance.)

1. The fire-resistant cable for aerospace comprises a cable body (1) and is characterized in that the cable body (1) comprises a plurality of cable cores (2), a protective layer (3) is sleeved on the outer side of each cable core (2), the same insulating layer (4) is sleeved on the outer side of each cable core (2), a fireproof layer (5) is arranged on the outer side of each insulating layer (4), a heat-resistant layer (6) is arranged on the outer side of each fireproof layer (5), a waterproof layer (7) is arranged on the outer side of each heat-resistant layer (6), an anti-twisting layer (8) is arranged on the outer side of each waterproof layer (7), an anti-stretching layer (9) is arranged on the outer side of each anti-twisting layer (8), a protective sleeve (12) is arranged on the outer side of each anti-stretching layer (9), a plurality of buffer seats (10) are fixedly mounted on the outer side of each anti-stretching layer (9), a first groove (20) is formed in each buffer seat, the other end of the sliding column (11) is fixedly arranged on the protective sleeve (12), a cavity (14) is formed in the anti-twisting layer (8), a plurality of first connecting pieces (15) are fixed on the inner wall of the top of the cavity (14), a plurality of second connecting pieces (16) are fixedly arranged on the inner wall of the bottom of the cavity (14), the same first elastic spring piece (17) is fixedly arranged between every two adjacent first connecting pieces (15), a second elastic spring piece (18) is fixedly arranged between every two adjacent second connecting pieces (16), the second elastic spring pieces (18) are matched with the corresponding first elastic spring pieces (17), a steel wire mesh (19) is arranged in the anti-stretching layer (9), second grooves (21) are formed in the inner walls of the two sides of the first groove (20), moving seats (22) are fixedly arranged on the two sides of the sliding column (11), and the moving seats (22) are slidably arranged in the second grooves (21), the bottom fixed mounting who removes seat (22) has the one end of first buffer spring (23), the other end fixed mounting of first buffer spring (23) is on the inner wall of second groove (21), protective sheath (12) was kept away from in sliding column (11) one side has seted up third groove (24), fixed mounting has T shape pole (25) on the bottom inner wall of first groove (20), the top of T shape pole (25) extends to in third groove (24), the top fixed mounting of T shape pole (25) has the one end of a plurality of second buffer spring (26), the other end fixed mounting of second buffer spring (26) is on the inner wall of third groove (24).

2. Aerospace fire-resistant cable according to claim 1, wherein the protective sheath (12) is provided with a corrosion-resistant layer on the outside, and the material of the protective sheath (12) is fluoroplastic.

3. The aerospace fire-resistant cable according to claim 1, wherein the waterproof layer (7) is filled with a water-blocking ointment, and the water-blocking ointment is composed of a base ointment, an expansion material and an additive.

4. The aerospace fire-resistant cable according to claim 1, wherein the insulating layer (4) is made of ceramic silicon rubber, and the outside of the insulating layer (4) is provided with a shielding layer.

5. Aerospace fire-resistant cable according to claim 1, wherein the steel mesh (19) is provided with carbon fibre filaments.

6. Aerospace fire resistant cable according to claim 1, wherein the insulating layer (4) is provided with a filling layer (13) and the filling layer (13) is provided as a fire resistant material.

7. The aerospace fire-resistant cable according to claim 1, wherein the heat-resistant layer (6) is coated with a high-flame-retardant environment-friendly oxygen-insulating layer.

8. The aerospace fire-resistant cable according to claim 1, wherein the fire-resistant layer (5) is provided with a fire-resistant layer, the fire-resistant layer (5) is provided with a fire-resistant material, and the fire-resistant material is made of magnesium hydroxide and serpentine powder.

Technical Field

The invention relates to the technical field of cables, in particular to a fire-resistant cable for aerospace.

Background

With the rapid development of aerospace industry, the progress of space technology and the continuous deepening of the harsh understanding of the universe environment in China, higher performance requirements of high and low temperature resistance, aging resistance, radiation resistance, light weight and the like are provided for connecting wires in electronic instruments and instrument equipment in the aerospace field, and as a globally leading wire and cable manufacturer, Kersen resistance is continuously developed to develop new materials, develop new cables and improve the configuration of the performance of the whole system. The connector and the composite wire harness for transmitting information and power are also produced, but the cable for aerospace in the market should be the most priority problem for manufacturer production in terms of fire resistance, the traditional cable cannot meet the use requirement in aerospace, the traditional cable for aerospace is deficient in fire resistance, the traditional cable is poor in buffering effect and tensile resistance, and the use is influenced, so that the fire-resistant cable for aerospace is provided for solving the problems.

Disclosure of Invention

The invention aims to solve the defects that the traditional aerospace cable has defects in fire resistance, and the traditional cable has poor buffering effect and tensile resistance and influences use in the prior art, and provides the aerospace fire-resistant cable.

In order to achieve the purpose, the invention adopts the following technical scheme:

a fire-resistant cable for aerospace comprises a cable body, wherein the cable body comprises a plurality of cable cores, a protective layer is sleeved outside the cable cores, the same insulating layer is sleeved outside the cable cores, a fireproof layer is arranged outside the insulating layer, a heat-resistant layer is arranged outside the fireproof layer, a waterproof layer is arranged outside the heat-resistant layer, an anti-twisting layer is arranged outside the waterproof layer, an anti-stretching layer is arranged outside the anti-twisting layer, a protective sleeve is arranged outside the anti-stretching layer, a plurality of buffer seats are fixedly installed outside the anti-stretching layer, a first groove is formed in each buffer seat, one end of a sliding column is slidably installed in each first groove, the other end of the sliding column is fixedly installed on each protective sleeve, a cavity is formed in each anti-twisting layer, a plurality of first connecting pieces are fixed on the inner wall of the top of the cavity, a plurality of second connecting pieces are fixedly installed on the inner wall of the bottom of the cavity, and the same first elastic, fixed mounting has second elasticity shell fragment between two adjacent second connection pieces, and second elasticity shell fragment and the first elasticity shell fragment looks adaptation that corresponds, install the wire net in the stretch-proofing layer, the second groove has all been seted up on the both sides inner wall of first groove, the equal fixed mounting in both sides of slip post has the removal seat, and remove seat slidable mounting in the second groove, the bottom fixed mounting who removes the seat has the one end of first buffer spring, the other end fixed mounting of first buffer spring is on the inner wall of second groove, the third groove has been seted up to one side that the protective sheath was kept away from to the slip post, fixed mounting has T shape pole on the bottom inner wall of first groove, the top of T shape pole extends to the third inslot, the top fixed mounting of T shape pole has a plurality of second buffer spring's one end, the other end fixed mounting of second buffer spring is on the inner wall of third groove.

Preferably, the outer side of the protective sleeve is provided with a corrosion-resistant layer, and the protective sleeve is made of fluoroplastic.

Preferably, the waterproof layer is filled with water-blocking ointment, and the water-blocking ointment is composed of basic ointment, expansion material and additives.

Preferably, the insulating layer is made of ceramic silicon rubber, and a shielding layer is arranged on the outer side of the insulating layer.

Preferably, the material of the steel wire mesh is carbon fiber wires.

Preferably, a filling layer is arranged in the insulating layer, and the filling layer is made of fireproof materials.

Preferably, the heat-resistant layer is coated with a high-flame-retardant environment-friendly oxygen-insulating layer.

Preferably, the fireproof layer is provided with a flame-retardant layer, the fireproof layer is provided with a flame-retardant material, and the flame-retardant material is made of magnesium hydroxide and serpentine powder.

The invention relates to a fire-resistant cable for aerospace, which can protect a cable core through a protective layer, can ensure the insulating property of the cable when the cable spontaneously ignites and an external fire occurs because the insulating layer is made of ceramic silicon rubber due to good fire resistance and ceramic materials when high temperature is met, can ensure that the transmitted current or signal only travels along a lead and does not flow to the outside and can ensure the safety of external objects and human bodies because the fire-resistant layer and the heat-resistant layer are arranged, can increase the fire resistance and the heat resistance of the cable body because the fire-resistant layer is provided with the fire-resistant material which is made of magnesium hydroxide and serpentine powder, can ensure that the cable body can be used at high temperature, can improve the water resistance of the cable body because of the waterproof layer, and passes through the protective sleeve, the toughness, the corrosion resistance and the wear resistance of the cable are improved, and the service life of the cable body can be prolonged.

Because be equipped with the anti-distortion layer on the cable body, be provided with first elasticity shell fragment and second elasticity shell fragment in the anti-distortion layer, thereby when the cable body takes place the distortion, make first elasticity shell fragment and second elasticity shell fragment take place to warp, under the elastic action of shell fragment, can make the cable body reset, owing to be provided with the anti-stretching layer, and be equipped with the wire net in the anti-stretching layer, can increase the anti-stretching performance of cable body, when the cable body receives external force, the protective sheath can extrude the slip post this moment, make the slip post drive and remove the seat and compress first buffer spring, under the effect of T shape pole, the slip post can compress second buffer spring, make first buffer spring and second buffer spring take place the elastic deformation, thereby can cushion the protection to the cable body.

The cable provided by the invention has the advantages of reasonable design, simple structure and convenience in operation, the cable body can be used at a high temperature due to the arrangement of the fireproof layer and the heat-resistant layer, and the cable body is strong in distortion resistance and tensile resistance.

Drawings

Fig. 1 is a schematic structural diagram of a fire-resistant cable for aerospace according to the present invention;

FIG. 2 is a schematic structural view of a-a section of a fire-resistant cable for aerospace according to the present invention;

fig. 3 is a schematic cross-sectional structure view of an anti-twisting layer of a fire-resistant cable for aerospace according to the present invention;

fig. 4 is a schematic structural diagram of a section of a tensile layer of the aerospace fire-resistant cable according to the invention;

fig. 5 is a schematic cross-sectional structure view of a buffer seat and a sliding column of a fire-resistant cable for aerospace according to the present invention.

In the figure: 1. a cable body; 2. a cable core; 3. a protective layer; 4. an insulating layer; 5. a fire barrier layer; 6. a heat-resistant layer; 7. a waterproof layer; 8. an anti-distortion layer; 9. a stretch resistant layer; 10. a buffer seat; 11. a sliding post; 12. a protective sleeve; 13. a filling layer; 14. a chamber; 15. a first connecting piece; 16. a second connecting sheet; 17. a first elastic spring sheet; 18. a second elastic spring sheet; 19. steel wire mesh; 20. a first groove; 21. a second groove; 22. a movable seat; 23. a first buffer spring; 24. a third groove; 25. a T-shaped rod; 26. a second buffer spring.

Detailed Description

Referring to fig. 1-5, a fire-resistant cable for aerospace use comprises a cable body 1, the cable body 1 includes a plurality of cable cores 2, a protective layer 3 is sleeved outside the cable cores 2, the same insulating layer 4 is sleeved outside the cable cores 2, a fire-resistant layer 5 is arranged outside the insulating layer 4, a heat-resistant layer 6 is arranged outside the fire-resistant layer 5, a waterproof layer 7 is arranged outside the heat-resistant layer 6, an anti-twisting layer 8 is arranged outside the waterproof layer 7, an anti-stretching layer 9 is arranged outside the anti-twisting layer 8, a protective sleeve 12 is arranged outside the anti-stretching layer 9, a plurality of buffer seats 10 are fixedly mounted outside the anti-stretching layer 9, a first groove 20 is formed on each buffer seat 10, one end of a sliding column 11 is slidably mounted in the first groove 20, the other end of the sliding column 11 is fixedly mounted on the protective sleeve 12, a cavity 14 is formed on the anti-twisting layer 8, a plurality of first connecting pieces 15 are fixed on the, a plurality of second connecting sheets 16 are fixedly arranged on the inner wall of the bottom of the cavity 14, the same first elastic sheet 17 is fixedly arranged between two adjacent first connecting sheets 15, a second elastic sheet 18 is fixedly arranged between two adjacent second connecting sheets 16, the second elastic sheet 18 is matched with the corresponding first elastic sheet 17, a steel wire mesh 19 is arranged in the anti-stretching layer 9, second grooves 21 are respectively arranged on the inner walls of the two sides of the first groove 20, moving seats 22 are respectively and fixedly arranged on the two sides of the sliding column 11, the moving seats 22 are slidably arranged in the second grooves 21, one end of a first buffer spring 23 is fixedly arranged at the bottom of each moving seat 22, the other end of the first buffer spring 23 is fixedly arranged on the inner wall of the second groove 21, a third groove 24 is arranged on one side of the sliding column 11 far away from the protective sleeve 12, and a T-shaped rod 25 is fixedly arranged on the inner wall of the bottom of the first groove 20, the top end of the T-shaped rod 25 extends into the third groove 24, one end of a plurality of second buffer springs 26 is fixedly mounted at the top of the T-shaped rod 25, and the other end of the second buffer springs 26 is fixedly mounted on the inner wall of the third groove 24.

In the invention, the corrosion-resistant layer is arranged on the outer side of the protective sleeve 12, and the protective sleeve 12 is made of fluoroplastic.

In the invention, the waterproof layer 7 is filled with water-blocking ointment which is composed of basic ointment, expansion materials and additives.

In the invention, the insulating layer 4 is made of ceramic silicon rubber, and the outer side of the insulating layer 4 is provided with a shielding layer.

In the present invention, the material of the steel wire mesh 19 is carbon fiber wire.

In the invention, the insulating layer 4 is internally provided with the filling layer 13, and the filling layer 13 is made of fireproof material.

In the invention, the heat-resistant layer 6 is coated with a high flame-retardant environment-friendly oxygen-isolating layer.

In the invention, the fire-retardant layer 5 is provided with a flame-retardant layer, the fire-retardant layer 5 is provided with a flame-retardant material, and the flame-retardant material is prepared from magnesium hydroxide and serpentine powder.

In the invention, the cable core 2 can be protected by the protective layer 3, the insulating layer 4 is arranged, the insulating layer 4 is made of ceramic silicon rubber, the insulating layer 4 can ensure the insulating property of the cable when the cable spontaneously ignites and an external fire occurs due to good fire resistance and ceramic materials when encountering high temperature, the insulating layer 4 can ensure that the transmitted current or signal only travels along a lead and does not flow to the outside and can ensure the safety of external objects and human bodies, the fireproof layer 5 and the heat-resistant layer 6 are arranged, the fireproof layer 5 is provided with the flame-retardant material, and the flame-retardant material is made of magnesium hydroxide and serpentine powder, so that the fireproof property and the heat-resistant property of the cable body 1 can be increased, the cable body 1 can be used at high temperature, the waterproof property of the cable body 1 is improved due to the waterproof layer, and the protective sleeve 12, the toughness, the corrosion resistance and the wear resistance of the cable are improved, the service life of the cable body 1 can be prolonged, the anti-distortion layer 8 is arranged on the cable body 1, the first elastic spring piece 17 and the second elastic spring piece 18 are arranged in the anti-distortion layer 8, so that when the cable body 1 is distorted, the first elastic spring piece 17 and the second elastic spring piece 18 are deformed, the cable body 1 can be reset under the elastic action of the spring pieces, the anti-stretching layer 9 is arranged, the steel wire mesh 19 is arranged in the anti-stretching layer 9, the anti-stretching performance of the cable body 1 can be improved, when the cable body 1 is subjected to external force, the protective sleeve 12 can extrude the sliding column 11, the sliding column 11 drives the moving seat 22 to compress the first buffer spring 23, under the action of the T-shaped rod 25, the sliding column 11 can compress the second buffer spring 26, the first buffer spring 23 and the second buffer spring 26 are elastically deformed, so that the cable body 1 can be protected by buffering.