CN216817888U

CN216817888U - Polytetrafluoroethylene electric wire and cable for aerospace

Info

Publication number: CN216817888U
Application number: CN202123449275.8U
Authority: CN
Inventors: 张建国; 邹强; 王成; 田兆云; 卞晓刚
Original assignee: Anhui Huaneng Cable Co ltd
Current assignee: Anhui Huaneng Cable Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-06-24
Anticipated expiration: 2031-12-31

Abstract

The utility model relates to the technical field of cables, in particular to a polytetrafluoroethylene wire and cable for aerospace, which comprises a cable core, an insulating sleeve, a shielding layer, a waterproof layer, a high-temperature-resistant layer and a wear-resistant sheath, wherein the insulating sleeve is coated outside the cable core, the shielding layer is coated outside the insulating sleeve, the waterproof layer is coated outside the shielding layer, the high-temperature-resistant layer is coated outside the waterproof layer, the wear-resistant sheath is coated outside the high-temperature-resistant layer, and the cross section of the insulating sleeve is in a regular triangle structure; the surface of the wear-resistant sheath is provided with a plurality of groups of wear-resistant strips which are arranged along the length direction of the cable and are distributed in a staggered mode in sequence. Compared with the prior art, the wear-resistant cable has the advantages that the wear-resistant strips which are alternately distributed in a staggered manner are arranged outside the wear-resistant cable sheath, so that the wear resistance of the cable is enhanced, and the wear resistance of the cable is improved.

Description

Polytetrafluoroethylene electric wire and cable for aerospace

Technical Field

The utility model relates to the technical field of cables, in particular to a polytetrafluoroethylene wire cable for aerospace.

Background

Cables are typically made up of several wires or groups of wires. The method is widely applied in various daily fields. Due to the fact that requirements for cables in the aerospace field are higher, the problems that ordinary cables are prone to damage, the service life is shortened and the like often occur when the ordinary cables are used in the aerospace field. The polytetrafluoroethylene is a perfluoropolymer prepared by polymerizing tetrafluoroethylene free radicals, has excellent chemical resistance, low loss factor and high oxygen index, can stably work in a wide temperature and frequency range, and has good mechanical properties. Is commonly used in the aerospace field.

Although most of the current aerospace wires and cables have high performance characteristics, the aerospace wires and cables also need to have high structural stability and wear resistance due to the use environment.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a polytetrafluoroethylene wire and cable for aerospace.

The technical problem to be solved by the utility model is realized by adopting the following technical scheme:

the utility model provides an aerospace polytetrafluoroethylene wire and cable, includes the cable core, cladding insulating sleeve outside the cable core, cladding shielding layer outside insulating sleeve, cladding waterproof layer outside the shielding layer, cladding high temperature resistant layer outside waterproof layer, cladding wear-resisting sheath outside high temperature resistant layer, the transversal regular triangle structure of personally submitting of insulating sleeve.

As a further improvement of the utility model, a plurality of groups of wear-resistant strips which are arranged along the length direction of the cable and are distributed in a staggered manner are arranged on the surface of the wear-resistant sheath.

As a further improvement of the utility model, the cable core is made of a tin-plated copper material.

As a further improvement of the utility model, the insulating sleeve is made of polyethylene material.

As a further improvement of the utility model, an elastic insulating filler is arranged between the insulating sleeve and the shielding layer.

As a further improvement of the utility model, the shielding layer is woven by magnesium aluminum alloy with the diameter of 0.15 mm-0.2 mm.

As a further improvement of the utility model, the waterproof layer is made of glass fiber.

As a further improvement of the utility model, the high temperature resistant layer is made of a silicone rubber material.

As a further improvement of the utility model, the wear-resistant sheath and the wear-resistant strips are made of polytetrafluoroethylene materials.

As a further improvement of the utility model, each group of wear resistant strips comprises six wear resistant strips, and the length of each wear resistant strip is 10 cm-13 cm.

The utility model has the beneficial effects that:

compared with the prior art, the wear-resistant strips which are distributed in an alternating staggered mode are arranged on the outer portion of the wear-resistant sheath of the cable, so that the wear resistance of the cable is enhanced, the wear resistance of the cable is improved, and the overall stability of the cable is improved through the insulating layer which is arranged into the triangular structure and the elastic insulating filler.

Drawings

The utility model is further illustrated with reference to the following figures and examples:

FIG. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic cross-sectional structure of the present invention.

In the figure:

1. a cable core; 2. an insulating sleeve; 3. a shielding layer; 4. a waterproof layer; 5. a high temperature resistant layer; 6. a wear-resistant sheath; 7. wear resistant strips; 8. an elastomeric insulating filler.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the utility model easy to understand, the utility model is further explained in the following with the accompanying drawings and the embodiments.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1 and 2, a polytetrafluoroethylene electric wire and cable for aerospace mainly comprises a cable core 1, an insulating sleeve 2, a shielding layer 3, a waterproof layer 4, a high temperature resistant layer 5 and a wear-resistant sheath 6.

As shown in fig. 1, the insulating sleeve 2, the shielding layer 3, the waterproof layer 4, the high temperature resistant layer 5 and the wear-resistant sheath 6 are sequentially coated outside the cable core 1 from inside to outside.

Specifically, the cable core 1 is made of a tin-plated copper material and has good electric conductivity. The insulating sleeve 2 is coated outside the cable core 1 and is made of polyethylene materials, and the cross section of the insulating sleeve is of a regular triangle structure.

In the utility model, the shielding layer 3 is coated outside the insulating sleeve 2 and is formed by weaving magnesium-aluminum alloy with the diameter of 0.15-0.2 mm.

As shown in fig. 2, the insulating sleeve 2 and the shielding layer 3 are filled with an elastic insulating filler 8, and the elastic insulating filler 8 plays a role of supporting the shielding layer 3 from inside to outside, so as to prevent the shielding layer 3 from being recessed due to a gap during extrusion. The structure of the insulating sleeve 2 greatly improves the structural stability of the cable, so that the cable is not easy to damage in the use environment.

As shown in fig. 2, the waterproof layer 4 is coated outside the shielding layer 3 and made of glass fiber, so that the cable is not affected by external water vapor when used in rainy and snowy weather.

As shown in fig. 2, in order to improve the high temperature resistance of the present invention, the high temperature resistant layer 5 is coated outside the waterproof layer 4 and made of a silicon rubber material.

The wear-resistant sheath 6 is coated outside the high-temperature-resistant layer 5, and a plurality of groups of wear-resistant strips 7 which are arranged along the length direction of the cable and are distributed in a staggered mode in sequence are arranged on the surface of the wear-resistant sheath 6.

In order to improve the overall wear resistance of the present invention, a further preferred embodiment of the present invention is as follows:

each group of wear-resistant strips 7 comprises six wear-resistant strips 7 uniformly distributed along the circumferential direction of the outer surface of the wear-resistant sheath 6, the length of each wear-resistant strip 7 is 10 cm-13 cm, two adjacent groups of wear-resistant strips 7 are partially overlapped along the length direction of the cable, and the design aims to ensure that the wear-resistant strips 7 are distributed outside the cable along the length direction, so that the wear resistance of the cable is uniformly distributed on the whole.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A polytetrafluoroethylene wire and cable for aerospace, which is characterized in that: the cable comprises a cable core (1), an insulating sleeve (2) coated outside the cable core (1), a shielding layer (3) coated outside the insulating sleeve (2), a waterproof layer (4) coated outside the shielding layer (3), a high temperature resistant layer (5) coated outside the waterproof layer (4), and a wear-resistant sheath (6) coated outside the high temperature resistant layer (5), wherein the cross section of the insulating sleeve (2) is in a regular triangle structure;

the surface of the wear-resistant sheath (6) is provided with a plurality of groups of wear-resistant strips (7) which are arranged along the length direction of the cable and are distributed in a staggered manner in sequence.

2. The aerospace polytetrafluoroethylene wire cable according to claim 1, wherein: the cable core (1) is made of a tin-plated copper material.

3. The aerospace polytetrafluoroethylene wire cable according to claim 1, wherein: the insulating sleeve (2) is made of polyethylene material.

4. The aerospace polytetrafluoroethylene wire cable according to claim 1, wherein: and an elastic insulating filler (8) is arranged between the insulating sleeve (2) and the shielding layer (3).

5. The aerospace polytetrafluoroethylene wire cable according to claim 1, wherein: the shielding layer (3) is woven by magnesium-aluminum alloy with the diameter of 0.15 mm-0.2 mm.

6. The aerospace polytetrafluoroethylene wire cable according to claim 1, wherein: the waterproof layer (4) is made of glass fiber.

7. The aerospace polytetrafluoroethylene wire cable according to claim 1, wherein: the high-temperature resistant layer (5) is made of a silicon rubber material.

8. The aerospace polytetrafluoroethylene wire cable according to claim 1, wherein: the wear-resistant sheath (6) and the wear-resistant strips (7) are made of polytetrafluoroethylene materials.

9. The aerospace polytetrafluoroethylene wire cable according to claim 1, wherein: each group of wear-resistant strips (7) comprises six wear-resistant strips (7), and the length of each wear-resistant strip (7) is 10 cm-13 cm.