CN210073414U - Low-noise high-temperature-resistant shielding twisted-pair cable - Google Patents

Abstract

The utility model discloses a high temperature resistant shielding pair twist cable of low noise, including cable body and conductor, the fixed conductor that is equipped with in cable body inner chamber, cable body fixed surface is equipped with the polyimide layer No. one, the fixed cross isolation frame that is equipped with in cable body inner chamber, the utility model relates to a cable technology field. This solved traditional shielding twisted pair cable high temperature resistance under special environment poor performance, and the cable is because the too inside heat dispersion of protective layer is poor and the problem that does not have the interval between each conductor and have the interference each other, the surface of cable body and the surface of conductor adopt polyimide layer and No. two polyimide layers respectively to make its top layer have the high temperature resistant effect of efficient, it has heat dissipation silicone grease to fill between elastic rubber layer and the cross isolation frame, heat dissipation silicone grease is also known as heat conduction silicone grease, have high low temperature resistant, it is water-fast, ozone, weather-proof aging, and fix the isolation to the conductor, increase the antidetonation extrusion and fall the effect of making an uproar.

Description

Low-noise high-temperature-resistant shielding twisted-pair cable

Technical Field

The utility model relates to the technical field of cables, specifically be a low noise high temperature resistant shielding pair twist cable.

Background

Twisted-pair cables are cables made by twisting two different insulated conductors about each other, and function similar to twisted-pair cables to reduce the effect of electromagnetic radiation and external electromagnetic interference. A cable comprising several (typically 15 to thousands) twisted pairs (two insulated wires twisted in pairs) is called a twisted pair cable.

However, the existing shielded twisted-pair cable has poor high-temperature resistance under special environment, and the cable has poor heat dissipation performance due to too much inner part of the protective layer, so that the service life is short, and mutual interference may occur due to no space among all conductors.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a high temperature resistant shielding twisted pair cable of low noise has solved traditional shielding twisted pair cable high temperature resistance performance under special environment poor, and the cable does not have the problem that the interval has the interference each other because the heat dispersion of the too many inside of protective layer is poor and between each conductor moreover.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a high temperature resistant shielding pair twist cable of low noise, includes cable body and conductor, cable body inner chamber is fixed and is equipped with the conductor, cable body fixed surface is equipped with polyimide layer No. one, cable body inner chamber is fixed and is equipped with cross isolation frame, and the conductor is located cross isolation frame inner chamber, the elastic rubber layer of cavity adhesion in the cable body, it has heat dissipation silicone grease to fill between elastic rubber layer and the cross isolation frame, and heat dissipation silicone grease is located the conductor outside, conductor inner chamber is filled there is asbestos fiber, conductor fixed surface is equipped with polyimide layer No. two, No. two polyimide layer fixed surface is connected with anticollision piece.

Preferably, a waterproof layer is fixedly connected to the inner cavity wall of the first polyimide layer.

Preferably, the outer side wall of the elastic rubber layer is fixedly connected with a glass fiber layer, and the glass fiber layer is positioned between the elastic rubber layer and the waterproof layer.

Preferably, a triangular reinforcing block is installed at an included angle of an inner cavity of the cross isolation frame, and the triangular reinforcing block is located on one side of the conductor.

Preferably, the conductor inner cavity is provided with a wire core, and the asbestos fiber is positioned outside the wire core.

Preferably, the anti-collision block is made of rubber.

Advantageous effects

The utility model provides a high temperature resistant shielding pair twist cable of low noise. The method has the following beneficial effects:

1. this shielding pair twist cable adopts polyimide layer and No. two polyimide layers respectively through the surface at the cable body and the surface of conductor, and polyimide is one of the best organic polymer material of comprehensive properties, and high temperature resistant reaches more than 400 ℃, long-term service temperature range-200 ~ 300 ℃, and part does not have obvious melting point, high insulating properties, so adopts the polyimide material to have efficient high temperature resistant effect as the top layer of cable body and conductor, and high temperature resistant has insulating characteristics simultaneously.

2. According to the shielding twisted-pair cable, the cross-shaped isolating frame is arranged in the inner cavity of the cable body and isolates four groups of conductors, so that the conductors have certain distances and do not interfere with each other, the equivalent dielectric constant in the cable is reduced, and the shielding twisted-pair cable has stability; the triangle reinforcing block is installed to the inner chamber contained angle department of cross isolation frame, and the triangle reinforcing block has not only increased the steadiness of cross isolation frame but also carries on spacingly to the conductor, avoids the conductor to make its cross isolation frame warp to middle extrusion.

3. According to the shielding twisted-pair cable, heat dissipation silicone grease is filled between the elastic rubber layer and the cross isolation frame, the heat dissipation silicone grease is also called heat conduction silicone grease, the heat conduction silicone grease is a high heat conduction and insulation silicone material, almost never solidifies, and can be kept in a grease state for a long time when in use at the temperature of-50 ℃ to +230 ℃. The insulating material has excellent electrical insulation, excellent thermal conductivity, low freeness tending to zero, high and low temperature resistance, water resistance, ozone resistance and weather aging resistance, so that the outer side of the filled conductor has higher heat dissipation effect on the filled conductor, and the conductor is fixed and isolated, so that the anti-seismic extrusion and noise reduction effects are increased, and the electromagnetic interference between the lines is reduced.

Drawings

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

fig. 2 is a schematic view of the conductor structure of the present invention.

In the figure: 1. a cable body; 2. a conductor; 3. a cross-shaped isolation frame; 4. a first polyimide layer; 5. a glass fiber layer; 6. an elastic rubber layer; 7. heat dissipation silicone grease; 8. a triangular reinforcing block; 9. a second polyimide layer; 10. asbestos fibers; 11. a wire core; 12. an anti-collision block; 13. and a waterproof layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the utility model provides a low noise high temperature resistant shielding twisted pair cable technical scheme: a low-noise high-temperature-resistant shielding twisted-pair cable comprises a cable body 1 and a conductor 2, wherein the conductor 2 is fixedly arranged in an inner cavity of the cable body 1, a first polyimide layer 4 is fixedly arranged on the surface of the cable body 1, a cross isolation frame 3 is fixedly arranged in the inner cavity of the cable body 1, the conductor 2 is positioned in the inner cavity of the cross isolation frame 3, an elastic rubber layer 6 is adhered to the wall of the inner cavity of the cable body 1, heat dissipation silicone grease 7 is filled between the elastic rubber layer 6 and the cross isolation frame 3, the heat dissipation silicone grease 7 is positioned on the outer side of the conductor 2, asbestos fibers 10 are filled in the inner cavity of the conductor 2, a second polyimide layer 9 is fixedly arranged on the surface of the conductor 2, an anti-collision block 12 is fixedly connected on the surface of the second polyimide layer 9, a waterproof layer 13 is fixedly connected on the wall of the inner cavity of the first polyimide layer 4, a glass, the triangular reinforcing block 8 is arranged at an included angle of an inner cavity of the cross isolation frame 3, the triangular reinforcing block 8 is positioned on one side of the conductor 2, the core 11 is arranged in the inner cavity of the conductor 2, the asbestos fiber 10 is positioned on the outer side of the core 11, the anti-collision block 12 is made of rubber materials, a first polyimide layer 4 and a second polyimide layer 9 are respectively adopted on the surface of the cable body 1 and the surface of the conductor 2, polyimide is one of organic polymer materials with the best comprehensive performance, can resist high temperature of over 400 ℃, has a long-term use temperature range of-200-300 ℃, has no obvious melting point at part and high insulating performance, so the polyimide materials adopted as the surface layers of the cable body 1 and the conductor 2 have high-efficient high-temperature resistant effect and have insulating characteristic at the same time of high temperature resistance, the inner cavity of the conductor 2 is filled with the asbestos fiber 10, and a glass fiber layer 5 is, the asbestos fiber 10 and the glass fiber layer 5 have good high temperature resistance effect, and the high temperature resistance effect is further increased; the cross isolation frame 3 is arranged in the inner cavity of the cable body 1, and the four groups of conductors 2 are isolated by the cross isolation frame 3, so that the conductors have a certain distance from each other and are not interfered with each other, the equivalent dielectric constant in the cable is reduced, and the cable has stability; the triangular reinforcing block 8 is arranged at the included angle of the inner cavity of the cross isolation frame 3, the triangular reinforcing block 8 not only increases the stability of the cross isolation frame 3, but also limits the conductor 2, and prevents the conductor 2 from extruding towards the middle to cause the cross isolation frame 3 to deform; the inner cavity wall of the cable body 1 is adhered with an elastic rubber layer 6, and the elastic rubber layer 6 elastically supports the inner cavity of the cable body 1 to enable the inner cavity to be easily restored after deformation; the heat dissipation silicone grease 7 is filled between the elastic rubber layer 6 and the cross isolation frame 3, the heat dissipation silicone grease 7 is also called heat conduction silicone grease, the heat conduction silicone grease is a high heat conduction insulation silicone material, almost never solidifies, and can keep a grease state for a long time when in use at the temperature of-50 ℃ to +230 ℃. The anti-collision device has excellent electrical insulation property, excellent thermal conductivity, low freeness (tending to zero), high and low temperature resistance, water resistance, ozone resistance and weather aging resistance, so that the outer side of the filled conductor 2 has a high heat dissipation effect on the filled conductor, the conductor 2 is fixedly isolated, and the anti-collision extrusion and noise reduction effects are increased, so that the electromagnetic interference between lines is reduced, and the semi-circular anti-collision block 12 is arranged on the surface of the second polyimide layer 9 on the outer side of the conductor 2 and has an anti-collision effect; the waterproof layer 13 increases the waterproof effect.

When the cable works, the first polyimide layer 4 and the second polyimide layer 9 are respectively adopted on the surface of the cable body 1 and the surface of the conductor 2, polyimide is one of organic high polymer materials with the best comprehensive performance, the high temperature resistance reaches more than 400 ℃, the long-term use temperature range is-200-300 ℃, no obvious melting point exists in part, and the high insulation performance is realized, so that the polyimide material is adopted as the surface layers of the cable body 1 and the conductor 2, the high-temperature-resistant effect is high-efficiency, the high temperature resistance and the insulation characteristic are realized, the inner cavity of the conductor 2 is filled with asbestos fibers 10, the glass fiber layer 5 is arranged between the elastic rubber layer 6 and the waterproof layer 13, the asbestos fibers 10 and the glass fiber layer 5 have the good high temperature-resistant effect, and the high temperature-resistant effect is further; the cross isolation frame 3 is arranged in the inner cavity of the cable body 1, and the four groups of conductors 2 are isolated by the cross isolation frame 3, so that the conductors have a certain distance from each other and are not interfered with each other, the equivalent dielectric constant in the cable is reduced, and the cable has stability; the triangular reinforcing block 8 is arranged at the included angle of the inner cavity of the cross isolation frame 3, the triangular reinforcing block 8 not only increases the stability of the cross isolation frame 3, but also limits the conductor 2, and prevents the conductor 2 from extruding towards the middle to cause the cross isolation frame 3 to deform; the inner cavity wall of the cable body 1 is adhered with an elastic rubber layer 6, and the elastic rubber layer 6 elastically supports the inner cavity of the cable body 1 to enable the inner cavity to be easily restored after deformation; the heat dissipation silicone grease 7 is filled between the elastic rubber layer 6 and the cross isolation frame 3, the heat dissipation silicone grease 7 is also called heat conduction silicone grease, the heat conduction silicone grease is a high heat conduction insulation silicone material, almost never solidifies, and can keep a grease state for a long time when in use at the temperature of-50 ℃ to +230 ℃. The anti-collision device has excellent electrical insulation property, excellent thermal conductivity, low freeness (tending to zero), high and low temperature resistance, water resistance, ozone resistance and weather aging resistance, so that the outer side of the filled conductor 2 has a high heat dissipation effect on the filled conductor, the conductor 2 is fixedly isolated, and the anti-collision extrusion and noise reduction effects are increased, so that the electromagnetic interference between lines is reduced, and the semi-circular anti-collision block 12 is arranged on the surface of the second polyimide layer 9 on the outer side of the conductor 2 and has an anti-collision effect; the waterproof layer 13 increases the waterproof effect.

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. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a high temperature resistant shielding pair twist cable of low noise, includes cable body (1) and conductor (2), cable body (1) inner chamber is fixed and is equipped with conductor (2), its characterized in that: cable body (1) fixed surface is equipped with polyimide layer (4) No. one, cable body (1) inner chamber is fixed and is equipped with cross isolation frame (3), and conductor (2) are located cross isolation frame (3) inner chamber, cable body (1) inner chamber wall adhesion elasticity rubber layer (6), it has heat dissipation silicone grease (7) to fill between elasticity rubber layer (6) and cross isolation frame (3), and heat dissipation silicone grease (7) are located the conductor (2) outside, conductor (2) inner chamber is filled there is asbestos fiber (10), conductor (2) fixed surface is equipped with polyimide layer (9) No. two, polyimide layer (9) fixed surface is connected with anticollision piece (12) No. two.

2. A low noise, high temperature resistant shielded twisted pair cable according to claim 1, wherein: and a waterproof layer (13) is fixedly connected to the inner cavity wall of the first polyimide layer (4).

3. A low noise, high temperature resistant shielded twisted pair cable according to claim 1, wherein: the outer side wall of the elastic rubber layer (6) is fixedly connected with a glass fiber layer (5), and the glass fiber layer (5) is located between the elastic rubber layer (6) and the waterproof layer (13).

4. A low noise, high temperature resistant shielded twisted pair cable according to claim 1, wherein: triangle reinforcing block (8) are installed to cross isolation frame (3) inner chamber contained angle, and triangle reinforcing block (8) are located conductor (2) one side.

5. A low noise, high temperature resistant shielded twisted pair cable according to claim 1, wherein: conductor core (11) are installed to conductor (2) inner chamber, and asbestos fiber (10) are located the sinle silk (11) outside.

6. A low noise, high temperature resistant shielded twisted pair cable according to claim 1, wherein: the anti-collision block (12) is made of rubber.