Low-temperature-resistant and high-temperature-resistant aviation signal transmission cable
Through the combination of multi-layer structure and specific materials, the performance problems of aviation signal transmission cables in high and low temperature environments are solved, and stable signal transmission and cable structural integrity are achieved in the extreme temperature range, meeting the use needs of the aviation field.
Patent Information
- Application Number
- CN202422299794.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-19
AI Technical Summary
Existing aviation signal transmission cables have poor performance in high and low temperature environments, and are prone to softening, melting, embrittlement or breaking, affecting the quality and reliability of signal transmission.
It adopts a multi-layer structural design, including wire core, insulating layer, shielding layer, high-temperature resistance layer, low-temperature resistance layer, reinforcement layer and outer sheath, and uses specific materials such as fluoroplasty, silicone rubber, glass fiber reinforced plastic and aramid fiber to enhance the temperature resistance and mechanical strength of the cable.
Maintain signal transmission stability and cable structure integrity within the extreme temperature range, improve the high and low temperature resistance of the cable, enhance the tensile resistance and protection capabilities of the cable, and meet the requirements of the aviation environment.
Smart Images
Figure CN223180879U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of signal transmission cables, in particular to a low-temperature and high-temperature resistant aviation signal transmission cable. Background Technique
[0002] A cable is a device for transmitting electrical energy or signals, usually composed of several or several groups of wires. Wire and cable is an important material indispensable in industrial and agricultural production and modern life. China is the largest producer of wire and cable in the world, and the wire and cable industry occupies a very important position in China's national economy. Wire and cable mainly includes a wire core, a shielding layer, an insulating layer and a sheath. The insulating layer and the sheath are usually made of materials such as polyvinyl chloride and polyethylene.
[0003] In the prior art, during the use of an existing aviation signal transmission cable, its low-temperature and high-temperature resistance performance is poor. In a high-temperature environment, the insulating layer of the cable may soften or even melt, resulting in a change in the resistance of the cable and affecting the signal transmission quality. Problems such as signal attenuation and distortion may occur, and in severe cases, the signal transmission may even be completely interrupted. In a low-temperature environment, a cable with poor low-temperature resistance performance will become hard and brittle. When an aircraft flies at high altitudes or in cold regions, the cable may become brittle and break due to external forces such as vibration, bending or stretching. In addition, an existing aviation signal transmission cable in the prior art has poor strength itself and is prone to breakage, and its practicability is poor. Content of the Utility Model
[0004] The utility model mainly provides a low-temperature and high-temperature resistant aviation signal transmission cable with good high-temperature and low-temperature resistance performance and high strength.
[0005] In order to achieve the above object, the utility model adopts the following technical scheme: a low-temperature and high-temperature resistant aviation signal transmission cable, including a cable main body, a wire core is arranged inside the cable main body, an insulating layer is arranged on the outer wall of the wire core, a shielding layer is arranged outside the insulating layer, a high-temperature resistant layer is arranged outside the shielding layer, a low-temperature resistant layer is adhered to the outer wall of the high-temperature resistant layer, a reinforcing layer is adhered to the outer wall of the low-temperature resistant layer, a plurality of reinforcing ribs are arranged inside the reinforcing layer, and an outer sheath is arranged outside the reinforcing layer.
[0006] Preferably, the number of both the wire core and the insulating layer is three. By setting the number of both the wire core and the insulating layer to three, signals can be transmitted through the three wire cores, and the transmission efficiency is higher.
[0007] Preferably, an adhesive layer is fixed on the outer wall of the shielding layer, and the high-temperature resistant layer is attached to the shielding layer through the adhesive layer. Through the setting of the adhesive layer, and the adhesive layer is made of silicone sealant material. Silicone sealant has good high-temperature and low-temperature resistance, can maintain viscosity and elasticity within a relatively wide temperature range, plays a good role in fixing and protecting the wire cores in the cable main body, and at the same time also has certain waterproof sealing performance.
[0008] Preferably, a waterproof layer is provided between the reinforcing layer and the outer sheath. The two ends of the waterproof layer are respectively fixed to the reinforcing layer and the outer sheath. Through the setting of the waterproof layer, and the waterproof layer is made of polytetrafluoroethylene material. Polytetrafluoroethylene has extremely excellent high-temperature and low-temperature resistance, and can be used for a long time within the temperature range of -180°C to 260°C. This is crucial for cables that may face extreme temperature changes in the aviation field. It has extremely high chemical stability, strong corrosion resistance, can resist the erosion of various chemical substances that may exist in the aviation environment, has a low friction coefficient and good wear resistance, and can reduce the wear of the cable during installation and use.
[0009] Preferably, a filling layer is provided inside the shielding layer on the outer sides of the three insulating layers. Through the setting of the filling layer, the wire cores inside the cable main body can be kept in fixed positions, preventing the wire cores from moving, twisting or squeezing each other inside the cable main body. In the aviation environment, the vibration and bump of the aircraft are relatively frequent. The filling layer can ensure the stability of the wire cores, avoiding unstable signal transmission or wire core damage caused by the change of wire core positions, and has stronger practicability.
[0010] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:
[0011] In this utility model, through the setting of the high-temperature resistant layer, and the high-temperature resistant layer is made of fluoroplastics, and fluoroplastics have extremely high high-temperature resistance performance and can work stably for a long time in a high-temperature environment above 200°C. It also has excellent chemical corrosion resistance, electrical insulation and low friction coefficient. Through the setting of the low-temperature resistant layer, and the low-temperature resistant layer is made of silicone rubber, and silicone rubber has excellent elasticity and softness at low temperatures and can be used in an extremely low-temperature environment of -60°C to -70°C. At the same time, it also has good high-temperature resistance, ozone resistance, weather resistance and other characteristics, so that the high-temperature and low-temperature resistance effects of the cable body are better and the practicability is stronger. In addition, through the setting of the strengthening layer and the reinforcing rib, and the strengthening layer is made of glass fiber reinforced plastic, and glass fiber reinforced plastic has the advantages of light weight, high strength and corrosion resistance. The glass fiber reinforced plastic has good insulation performance and will not interfere with the signal transmission of the cable body. It can also resist high-temperature and low-temperature environments to a certain extent to ensure the stable operation of the cable under different working conditions. The reinforcing rib is made of aramid fiber, and aramid fiber has extremely high strength and modulus. It is light in weight and has good fatigue resistance and can withstand long-term cyclic stress without damage. In an aviation signal transmission cable, the aramid fiber reinforcing rib can improve the tensile resistance performance of the cable body and prevent the cable body from breaking under conditions such as bending and torsion. At the same time, aramid fiber also has good flame retardancy and high-temperature resistance performance and can meet the safety requirements in the aviation field, and the practicability is stronger. Brief Description of the Drawings
[0012] Figure 1 is a perspective view of a low-temperature and high-temperature resistant aviation signal transmission cable proposed by this utility model;
[0013] Figure 2 is a front view of a low-temperature and high-temperature resistant aviation signal transmission cable proposed by this utility model;
[0014] Figure 3 is a cross-sectional view of a low-temperature and high-temperature resistant aviation signal transmission cable proposed by this utility model.
[0015] Legend: 1. Core; 2. Insulation layer; 3. Shielding layer; 4. Filling layer; 5. Adhesive layer; 6. High-temperature resistant layer; 7. Low-temperature resistant layer; 8. Strengthening layer; 9. Reinforcing rib; 10. Waterproof layer; 11. Outer sheath; 12. Cable body. Detailed Embodiment
[0016] In order to be able to more clearly understand the above-mentioned objects, features and advantages of this utility model, the following further describes this utility model with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of this application and the features in the embodiments can be combined with each other.
[0017] In the following description, many specific details are set forth in order to provide a thorough understanding of the present utility model. However, the present utility model may also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.
[0018] Please refer to Figure 1 - Figure 3 , the present utility model provides a technical solution: a low-temperature and high-temperature resistant aviation signal transmission cable, including a cable main body 12. A wire core 1 is arranged inside the cable main body 12. An insulating layer 2 is arranged on the outer wall of the wire core 1. A shielding layer 3 is arranged outside the insulating layer 2. A high-temperature resistant layer 6 is arranged outside the shielding layer 3. A low-temperature resistant layer 7 is adhered to the outer wall of the high-temperature resistant layer 6. A reinforcing layer 8 is adhered to the outer wall of the low-temperature resistant layer 7. A plurality of reinforcing ribs 9 are arranged inside the reinforcing layer 8. An outer sheath 11 is arranged outside the reinforcing layer 8. Through the setting of the high-temperature resistant layer 6, and the high-temperature resistant layer 6 is made of fluoroplastics, and fluoroplastics have extremely high high-temperature resistance performance and can work stably for a long time in a high-temperature environment above 200 °C. It also has excellent chemical corrosion resistance, electrical insulation and low friction coefficient. Through the setting of the low-temperature resistant layer 7, and the low-temperature resistant layer 7 is made of silicone rubber, and silicone rubber has excellent elasticity and flexibility at low temperatures and can be used in an extremely low-temperature environment of -60 °C to -70 °C. At the same time, it also has good high-temperature resistance, ozone resistance, weather resistance and other characteristics, so that the cable main body 12 has better high-temperature and low-temperature resistance effects and stronger practicability. In addition, through the setting of the reinforcing layer 8 and the reinforcing ribs 9, and the reinforcing layer 8 is made of glass fiber reinforced plastic, and glass fiber reinforced plastic has the advantages of light weight, high strength, corrosion resistance, etc. The insulating performance of glass fiber reinforced plastic is good and will not interfere with the signal transmission of the cable main body 12. It can also resist high-temperature and low-temperature environments to a certain extent and ensure the stable operation of the cable under different working conditions. The reinforcing ribs 9 are made of aramid fiber, and aramid fiber has extremely high strength and modulus. It is light in weight and has good fatigue resistance and can withstand long-term cyclic stress without damage. In an aviation signal transmission cable, the aramid fiber reinforcing ribs 9 can improve the tensile resistance performance of the cable main body 12 and prevent the cable main body 12 from breaking under conditions such as bending and torsion. At the same time, aramid fiber also has good flame retardancy and high-temperature resistance performance and can meet the safety requirements of the aviation field and has stronger practicability.
[0019] As Figures 1-3 shown, the number of the wire cores 1 and the insulating layers 2 is three each. By having three wire cores 1 and three insulating layers 2 each, signals can be transmitted through the three wire cores 1, and the transmission efficiency is higher.
[0020] As Figures 1-3As shown, an adhesive layer 5 is fixedly adhered to the outer wall of the shielding layer 3, and the high-temperature resistant layer 6 is attached to the shielding layer 3 through the adhesive layer 5. Through the setting of the adhesive layer 5, and the adhesive layer 5 is made of silicone sealant. Silicone sealant has good high-temperature and low-temperature resistance, can maintain viscosity and elasticity within a wide temperature range, plays a good role in fixing and protecting the wire core 1 in the cable body 12, and at the same time also has certain sealing and waterproof performance.
[0021] As Figures 1-3 shown, a waterproof layer 10 is provided between the strengthening layer 8 and the outer sheath 11. Both ends of the waterproof layer 10 are respectively fixed to the strengthening layer 8 and the outer sheath 11. Through the setting of the waterproof layer 10, and the waterproof layer 10 is made of polytetrafluoroethylene. Polytetrafluoroethylene has extremely excellent high-temperature and low-temperature resistance, can be used for a long time within the temperature range of -180°C to 260°C. This is crucial for cables that may face extreme temperature changes in the aviation field. It has extremely high chemical stability, strong corrosion resistance, can resist the erosion of various chemical substances that may exist in the aviation environment, has a low friction coefficient and good wear resistance, and can reduce the wear of the cable during installation and use.
[0022] As Figures 1-3 shown, a filling layer 4 is provided inside the shielding layer 3 on the outer sides of the three insulating layers 2. Through the setting of the filling layer 4, the respective wire cores 1 inside the cable body 12 can be kept in fixed positions, preventing the wire cores 1 from moving, twisting or squeezing each other inside the cable body 12. In the aviation environment, the vibration and bump of the aircraft are relatively frequent. The filling layer 4 can ensure the stability of the wire cores 1, avoiding unstable signal transmission or damage to the wire cores 1 caused by changes in the positions of the wire cores 1, and has stronger practicability.
[0023] Usage method and working principle of this device: When this device is in use, due to the setting of the high-temperature resistant layer 6, and the high-temperature resistant layer 6 is made of fluoroplastics, and fluoroplastics have extremely high high-temperature resistance and can work stably in a high-temperature environment above 200 °C for a long time. It also has excellent chemical corrosion resistance, electrical insulation and low friction coefficient. Due to the setting of the low-temperature resistant layer 7, and the low-temperature resistant layer 7 is made of silicone rubber, and silicone rubber has excellent elasticity and flexibility at low temperatures and can be used in an extremely low-temperature environment of -60 °C to -70 °C. At the same time, it also has good high-temperature resistance, ozone resistance, weather resistance and other characteristics, so that the high-temperature and low-temperature resistance effects of the cable body 12 are better and the practicability is stronger. In addition, due to the setting of the strengthening layer 8 and the reinforcing rib 9, and the strengthening layer 8 is made of glass fiber reinforced plastic, and glass fiber reinforced plastic has the advantages of light weight, high strength and corrosion resistance. The glass fiber reinforced plastic has good insulation performance and will not interfere with the signal transmission of the cable body 12. It can also resist high-temperature and low-temperature environments to a certain extent to ensure the stable operation of the cable under different working conditions. The reinforcing rib 9 is made of aramid fiber, and aramid fiber has extremely high strength and modulus. It is light in weight and has good fatigue resistance and can withstand long-term cyclic stress without damage. In an aviation signal transmission cable, the aramid fiber reinforcing rib 9 can improve the tensile resistance of the cable body 12 and prevent the cable body 12 from breaking under conditions such as bending and torsion. At the same time, aramid fiber also has good flame retardancy and high-temperature resistance, which can meet the safety requirements in the aviation field and has stronger practicability.
[0024] The above is only a preferred embodiment of the present invention, and it is not a limitation to the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims
1. A low-temperature and high-temperature resistant aviation signal transmission cable, comprising a cable main body (12), characterized in that: A conductor core (1) is arranged inside the cable body (12). An insulating layer (2) is arranged on the outer wall of the conductor core (1). A shielding layer (3) is arranged outside the insulating layer (2). A high-temperature resistant layer (6) is arranged outside the shielding layer (3). A low-temperature resistant layer (7) is adhered to the outer wall of the high-temperature resistant layer (6). A reinforcing layer (8) is adhered to the outer wall of the low-temperature resistant layer (7). A plurality of reinforcing ribs (9) are arranged inside the reinforcing layer (8). An outer sheath (11) is arranged outside the reinforcing layer (8).
2. The low-temperature and high-temperature resistant aviation signal transmission cable according to claim 1, wherein: The number of the conductor core (1) and the insulating layer (2) is three respectively.
3. The cryogenic and high-temperature resistant aviation signal transmission cable according to claim 1, wherein: An adhesive layer (5) is fixedly adhered to the outer wall of the shielding layer (3). The high-temperature resistant layer (6) is attached to the shielding layer (3) through the adhesive layer (5).
4. The cryogenic and high-temperature resistant aviation signal transmission cable according to claim 1, characterized in that: A waterproof layer (10) is arranged between the reinforcing layer (8) and the outer sheath (11). Two ends of the waterproof layer (10) are respectively fixed to the reinforcing layer (8) and the outer sheath (11).
5. The cryogenic and high-temperature resistant aviation signal transmission cable according to claim 2, characterized in that: A filling layer (4) is arranged inside the shielding layer (3) and outside the three insulating layers (2).