A type of cable resistant to high and low temperatures and breakage.

Abstract

This utility model discloses a high and low temperature resistant and breakage-resistant cable, comprising a cable body, which includes a cable core and a sheath structure layer. The sheath structure layer is disposed outside the cable core and includes an outer sheath layer, a functional structure layer, a flame-retardant layer, an outer insulation layer, and an outer shielding layer. The functional structure layer consists of an outer layer, a middle layer, and an inner layer, arranged sequentially from the outside to the inside. The outer layer is a modified polyurethane elastomer, the middle layer is an aramid fiber braided reinforcement layer, and the inner layer is high-temperature resistant silicone rubber. This cable achieves high and low temperature resistance, increasing its practicality and solving the problem of cracking and breakage, mechanical protection failure, and unstable cable use under extreme temperature environments.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to a cable that is resistant to high and low temperatures and prevents breakage. Background Technology

[0002] A cable is a transmission medium composed of multiple conductors or optical fibers as its core, and is composed of structural layers such as insulation, shielding, filling and sheathing. Its core function is to realize the safe, efficient and long-distance transmission of electrical signals, optical signals or electricity.

[0003] For example, the authorized patent with announcement number CN222088321U (a power cable) includes a power cable, on which a core structure is provided, the core structure includes a plastic sheath, the plastic sheath is fixedly installed on the outer surface of the power cable, a braided sleeve is fixedly connected inside the plastic sheath, a shielding layer is fixedly connected inside the braided sleeve, a filling layer is fixedly connected inside the shielding layer, and a core is provided inside the filling layer;

[0004] While the aforementioned existing technologies can conveniently improve the stability of power transmission, they have poor resistance to high and low temperatures. Consequently, during cable use, cracking and damage can easily occur under extreme temperature environments, resulting in the failure of mechanical protection and hindering the stable use of the cable. Therefore, there is an urgent need in the market to develop a cable that is resistant to high and low temperatures and prevents breakage to help people solve the existing problems. Utility Model Content

[0005] The purpose of this invention is to provide a cable that is resistant to high and low temperatures and is not prone to breakage, in order to solve the problem mentioned in the background art that the cable is prone to cracking and breakage under extreme temperature conditions, mechanical protection fails, and the stable use of the cable is not conducive to its use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high and low temperature resistant and damage-resistant cable, comprising a cable body, the cable body comprising a cable core and a sheath structure layer, the sheath structure layer being disposed on the outside of the cable core, the sheath structure layer comprising an outer sheath layer, a functional structure layer, a flame-retardant layer, an outer insulation layer and an outer shielding layer, the functional structure layer comprising an outer layer, a middle layer and an inner layer, the outer layer, the middle layer and the inner layer being arranged sequentially from the outside to the inside, the outer layer being a modified polyurethane elastomer, the middle layer being an aramid fiber braided reinforcement layer, and the inner layer being a high-temperature resistant silicone rubber.

[0007] Preferably, the outer sheath layer, functional structure layer, flame retardant layer, outer insulation layer and outer shielding layer are arranged sequentially from the outside to the inside, and the outer sheath layer and the flame retardant layer are both made of halogen-free low-smoke flame retardant material.

[0008] Preferably, the outer insulating layer is made of a composite material of silicone rubber and polyimide.

[0009] Preferably, the outer shielding layer is configured as a composite structure of nickel-plated copper foil and aramid fiber, and the outer surface of the outer shielding layer is coated with a nano-silica lubricating layer.

[0010] Preferably, the cable core is composed of multiple wire cores arranged in a ring, with a central post in the middle of the multiple wire cores, and the central post is made of silicone rubber material.

[0011] Preferably, the wire core includes a conductor, an inner shielding layer, and an inner insulation layer, which are arranged sequentially from the inside to the outside. The inner shielding layer is made of a semi-conductive material, and the inner insulation layer is made of cross-linked polyethylene material.

[0012] Preferably, the space between the cable core and the sheath structure layer is filled with fiberglass rope.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) This utility model, through the functional structural layer consisting of an outer modified polyurethane elastomer, a middle aramid fiber braided reinforcement layer, and an inner high-temperature resistant silicone rubber arranged sequentially from the outside to the inside, synergistically improves the cable's resistance to high and low temperatures. Under extreme temperature environments, the modified polyurethane elastomer and high-temperature resistant silicone rubber ensure that the cable will not crack or break due to drastic temperature changes. At the same time, the aramid fiber braided reinforcement layer further enhances the mechanical protection capability, effectively preventing the failure of mechanical protection and ensuring the stable use of the cable under harsh conditions, thus increasing its practicality.

[0015] (2) The utility model is made of halogen-free low-smoke flame-retardant materials for both the outer sheath and the flame-retardant layer, so that the cable will not release toxic halogen gas in fire or high-temperature environment, thus improving safety. The outer insulation layer is made of silicone rubber and polyimide composite material, which has both high temperature resistance and electrical insulation performance, thus improving the stability of the cable in high-temperature environment. The outer shielding layer is made of nickel-plated copper foil and aramid fiber braided composite structure, which enhances the electromagnetic shielding effect and mechanical strength, thus increasing practicality.

[0016] (3) The utility model includes a conductor, an inner shielding layer and an inner insulation layer in the wire core. The inner shielding layer is made of a semi-conductive material, which can distribute the electric field evenly and reduce partial discharge. The inner insulation layer is made of cross-linked polyethylene material, which can provide stable insulation and is conducive to the stable operation of the cable. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a high and low temperature resistant and breakage-proof cable according to the present invention;

[0018] Figure 2This is a side sectional view of the cable core and sheath structure layer of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the functional layer of this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the wire core of this utility model;

[0021] In the diagram: 1. Cable core; 2. Sheath structure layer; 201. Outer sheath layer; 202. Functional structure layer; 2021. Outer layer; 2022. Middle layer; 2023. Inner layer; 203. Flame retardant layer; 204. Outer insulation layer; 205. Outer shielding layer; 3. Wire core; 301. Conductor; 302. Inner shielding layer; 303. Inner insulation layer; 4. Center post. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4 The present invention provides an embodiment of a high and low temperature resistant and damage-resistant cable, comprising a cable body, the cable body comprising a cable core 1 and a sheath structure layer 2, the sheath structure layer 2 being disposed on the outside of the cable core 1, the sheath structure layer 2 comprising an outer sheath layer 201, a functional structure layer 202, a flame retardant layer 203, an outer insulation layer 204 and an outer shielding layer 205, the functional structure layer 202 being composed of an outer layer 2021, a middle layer 2022 and an inner layer 2023, the outer layer 2021, the middle layer 2022 and the inner layer 2023 being arranged sequentially from the outside to the inside, the outer layer 2021 being a modified polyurethane elastomer, the middle layer 2022 being an aramid fiber braided reinforcement layer, and the inner layer 2023 being a high temperature resistant silicone rubber.

[0024] The functional structural layer 202 in the sheath structure layer 2 consists of an outer layer 2021 made of modified polyurethane elastomer, which can maintain flexibility in low-temperature environments and avoid embrittlement and breakage; an inner layer 2023 made of high-temperature resistant silicone rubber, which can maintain stable performance at high temperatures and prevent softening and deformation; and a middle layer 2022 made of aramid fiber braided reinforcement layer to strengthen mechanical protection, which can effectively disperse external forces and resist tensile and compressive forces. The three layers work together to ensure that the cable will not crack or break due to drastic temperature changes in extreme temperature environments, and that mechanical protection remains effective at all times, thus ensuring the safety of the cable core and improving the adaptability and stability of the cable under complex and harsh conditions.

[0025] Please see Figure 2 and Figure 3The outer sheath layer 201, the functional structure layer 202, the flame retardant layer 203, the outer insulation layer 204, and the outer shielding layer 205 are arranged sequentially from the outside to the inside. The outer sheath layer 201 and the flame retardant layer 203 are both made of halogen-free low-smoke flame retardant materials.

[0026] Both the outer sheath layer 201 and the flame-retardant layer 203 are made of halogen-free, low-smoke flame-retardant materials, which prevents the cable from releasing toxic halogen gases in fire or high-temperature environments, reduces smoke generation, and improves safety.

[0027] Please see Figure 3 The outer insulating layer 204 is made of a composite material of silicone rubber and polyimide, the outer shielding layer 205 is set as a composite structure of nickel-plated copper foil and aramid fiber, and the outer surface of the outer shielding layer 205 is coated with a nano-silica lubricating layer.

[0028] The outer insulation layer 204 is made of silicone rubber and polyimide composite material, which has both high temperature resistance and electrical insulation properties, improving the stability of the cable in high temperature environment. The outer shielding layer 205 adopts a composite structure of nickel-plated copper foil and aramid fiber braiding, which enhances the electromagnetic shielding effect and mechanical strength. The outer nano-silica lubricating layer reduces friction and facilitates installation and laying, thereby improving the cable's anti-interference ability and increasing its practicality.

[0029] Please see Figure 2 The cable core 1 is composed of multiple wire cores 3 arranged in a ring, and a central post 4 is set in the middle of the multiple wire cores 3. The central post 4 is made of silicone rubber material.

[0030] Silicone rubber center posts have good elasticity and temperature resistance, which can buffer external impacts, prevent core deformation, and improve the overall flexibility of the cable, making it suitable for frequent bending or vibration conditions.

[0031] Please refer to 4. The core 3 includes a conductor 301, an inner shielding layer 302, and an inner insulation layer 303. The conductor 301, the inner shielding layer 302, and the inner insulation layer 303 are arranged sequentially from the inside to the outside. The inner shielding layer 302 is made of a semi-conductive material, and the inner insulation layer 303 is made of cross-linked polyethylene material.

[0032] Core 3 adopts a layered design of conductor, semiconductor inner shielding layer and cross-linked polyethylene insulation layer, which improves the electrical performance and safety of the cable. The inner shielding layer has a uniform electric field distribution, which reduces partial discharge. The cross-linked polyethylene insulation layer is resistant to high temperature and aging, and has excellent insulation performance, making the cable suitable for high voltage and high frequency transmission scenarios and ensuring long-term stable operation.

[0033] Please see Figure 2 The space between the cable core 1 and the sheath structure layer 2 is filled with fiberglass rope.

[0034] Fiberglass rope is heat-resistant, non-flammable, and has good flexibility. It can effectively absorb mechanical stress and enhance the tensile strength and impact resistance of cables.

[0035] Working principle: During use, the three-layer composite design of the functional structural layer 202, with the outer modified polyurethane elastomer resisting low-temperature brittleness, the middle aramid fiber braided layer providing mechanical support, and the inner high-temperature resistant silicone rubber resisting thermal deformation, forms a protective system that enables the cable to be used stably under extreme temperature differences. The halogen-free flame-retardant layer 203 and the outer sheath layer 201 constitute a double fire barrier, suppressing the generation of toxic gases and smoke when exposed to fire. The silicone rubber and polyimide composite material of the outer insulation layer 204 and the nickel-plated copper foil and aramid fiber composite structure of the outer shielding layer 205 respectively ensure high-temperature insulation and electromagnetic shielding stability. The ring-shaped cable core 3 layout of the cable core 1, combined with the silicone rubber central column 4, achieves stress buffering. Through the cooperation of each structural layer, the cable achieves high and low temperature resistance and damage prevention, increasing its practicality.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high and low temperature resistant and breakage-resistant cable, comprising a cable body, characterized in that: The cable body includes a cable core (1) and a sheath structure layer (2). The sheath structure layer (2) is disposed on the outside of the cable core (1). The sheath structure layer (2) includes an outer sheath layer (201), a functional structure layer (202), a flame retardant layer (203), an outer insulation layer (204), and an outer shielding layer (205). The functional structure layer (202) is composed of an outer layer (2021), a middle layer (2022), and an inner layer (2023). The outer layer (2021), the middle layer (2022), and the inner layer (2023) are arranged sequentially from the outside to the inside. The outer layer (2021) is a modified polyurethane elastomer, the middle layer (2022) is an aramid fiber braided reinforcement layer, and the inner layer (2023) is high-temperature resistant silicone rubber.

2. The high and low temperature resistant and breakage-proof cable according to claim 1, characterized in that: The outer sheath layer (201), functional structure layer (202), flame retardant layer (203), outer insulation layer (204) and outer shielding layer (205) are arranged sequentially from the outside to the inside. The outer sheath layer (201) and the flame retardant layer (203) are both made of halogen-free low-smoke flame retardant materials.

3. The high and low temperature resistant and breakage-proof cable according to claim 2, characterized in that: The outer insulating layer (204) is made of a composite material of silicone rubber and polyimide.

4. The high and low temperature resistant and breakage-proof cable according to claim 3, characterized in that: The outer shielding layer (205) is configured as a composite structure of nickel-plated copper foil and aramid fiber, and the outer surface of the outer shielding layer (205) is coated with a nano-silica lubricating layer.

5. The high and low temperature resistant and breakage-proof cable according to claim 4, characterized in that: The cable core (1) is composed of multiple wire cores (3), which are arranged in a ring. A central post (4) is provided in the middle of the multiple wire cores (3), and the central post (4) is made of silicone rubber material.

6. The high and low temperature resistant and breakage-proof cable according to claim 5, characterized in that: The core (3) includes a conductor (301), an inner shielding layer (302) and an inner insulation layer (303). The conductor (301), the inner shielding layer (302) and the inner insulation layer (303) are arranged sequentially from the inside to the outside. The inner shielding layer (302) is made of a semi-conductive material and the inner insulation layer (303) is made of cross-linked polyethylene material.

7. A high and low temperature resistant and breakage-resistant cable according to claim 6, characterized in that: The space between the cable core (1) and the sheath structure layer (2) is filled with fiberglass rope.

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