Protective environment-friendly flame-retardant power cable

Abstract

The utility model discloses a protective environment-friendly flame-retardant power cable, which comprises a cable core, preferably, the cable core comprises a protective layer and a wire core, the protective layer is arranged on the outer side of the wire core, the protective layer comprises an outer sheath and a functional layer, the outer sheath is arranged on the outer side of the functional layer, and the functional layer is arranged on the outer side of the functional layer. The functional layer is composed of a flame-retardant layer, an environment-friendly layer, an armor layer, a reinforcing layer and an outer insulating layer, the flame-retardant layer, the environment-friendly layer, the armor layer, the reinforcing layer and the outer insulating layer are sequentially arranged from outside to inside, the flame-retardant layer is made of an inorganic flame retardant polymer, and the environment-friendly layer is made of a bio-based polymer. According to the power cable, the stable flame-retardant capability is realized, and the practicability is improved, so that the problems that stable flame retardance cannot be realized in the use process of the power cable, and stable use of the power cable is not facilitated are solved.

Description

Technical Field

[0001] This utility model relates to the field of power cable technology, specifically a protective, environmentally friendly, flame-retardant power cable. Background Technology

[0002] Power cables are a combination of conductors used to transmit electrical energy. They are widely used in various power systems. In power systems, cables are used to transmit and distribute high-power electrical energy and are an important component in the main lines of the power system. In power transmission, cables serve as an important carrier for power distribution, and their quality and performance are directly related to the stability and reliability of the entire system.

[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, their flame-retardant protection capabilities are poor. Consequently, they cannot stably retard the flame during the use of power cables, which is detrimental to the stable use of power cables. Therefore, the market urgently needs to develop a protective, environmentally friendly, flame-retardant power cable to help people solve the existing problems. Utility Model Content

[0005] The purpose of this utility model is to provide a protective, environmentally friendly, flame-retardant power cable to solve the problem mentioned in the background art that the power cable cannot be stably flame-retardant during use, which is not conducive to the stable use of the power cable.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a protective environmentally friendly flame-retardant power cable, comprising a cable core, preferably, the cable core comprising a protective layer and a conductor core, the protective layer being disposed on the outside of the conductor core, the protective layer comprising an outer sheath and a functional layer, the outer sheath being disposed on the outside of the functional layer, the functional layer comprising a flame-retardant layer, an environmentally friendly layer, an armor layer, a reinforcing layer and an outer insulation layer, the flame-retardant layer, environmentally friendly layer, armor layer, reinforcing layer and outer insulation layer being arranged sequentially from the outside to the inside, the flame-retardant layer being made of an inorganic flame-retardant polymer, and the environmentally friendly layer being made of a bio-based polymer.

[0007] Preferably, the armor layer is a double-galvanized steel strip, the reinforcing layer is an aramid fiber woven mesh, and the outer insulation layer is made of cross-linked polyethylene material.

[0008] Preferably, the wire core includes a conductor, a semi-conductive shielding layer, and an inner insulation layer, wherein the semi-conductive shielding layer is disposed on the outside of the conductor, and the inner insulation layer is disposed on the outside of the semi-conductive shielding layer.

[0009] Preferably, the inner insulation layer is made of cross-linked polyethylene material.

[0010] Preferably, the wire core is provided in multiple ways, and an inner cavity is provided inside the functional layer along the outer side of the wire core. The inner cavity is filled with a filler material, which is a polypropylene rope.

[0011] Preferably, an external identification strip is provided on the outer side of the outer sheath, and an internal identification strip is provided on the outer side of the inner insulation layer.

[0012] Preferably, the outer sheath is made of low-smoke, halogen-free, flame-retardant polyolefin material.

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

[0014] (1) The utility model has a functional layer in the protective layer. The flame retardant layer in the functional layer is made of inorganic flame retardant polymer. This material has excellent flame retardant properties and can form an effective flame retardant barrier when the cable encounters a fire source, stably preventing the spread of fire and ensuring that the cable can still maintain good structural integrity in extreme situations such as fire. This greatly improves the flame retardant stability of the power cable during use, reduces power transmission interruption and safety accidents caused by flame retardant problems, and effectively guarantees the stable use of the power cable.

[0015] (2) The utility model has high strength and toughness by setting a double galvanized steel strip armor layer, which can effectively resist external mechanical damage and protect the internal structure of the cable from damage. The reinforcing layer of aramid fiber braided mesh further enhances the overall strength of the cable and improves the tensile and bending performance of the cable, so that the cable can maintain good performance in complex laying environments. The cross-linked polyethylene outer insulation layer has good electrical insulation performance and heat resistance, which can effectively prevent leakage accidents and ensure the safety of power transmission. Thus, it realizes the stable protection capability of power cables, greatly improves the mechanical and electrical performance of cables, and enhances the adaptability and reliability of cables in various harsh environments.

[0016] (3) The utility model includes a conductor, a semi-conductive shielding layer and an internal insulation layer in the core. The semi-conductive shielding layer can distribute the electric field evenly, reduce the phenomenon of electric field concentration, and reduce the possibility of partial discharge. The cross-linked polyethylene internal insulation layer has good insulation performance, heat resistance and mechanical properties, which can effectively prevent current leakage, thereby ensuring the safety and efficiency of power transmission and improving the electrical insulation level of the cable. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a protective, environmentally friendly, flame-retardant power cable according to the present invention;

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

[0019] Figure 3 This is a schematic diagram of the core structure of the present invention;

[0020] Figure 4 This is a diagram showing the internal structure of the functional layer of this utility model.

[0021] In the diagram: 1. Cable core; 2. Protective layer; 201. Outer sheath; 202. Functional layer; 2021. Flame retardant layer; 2022. Environmental protection layer; 2023. Armor layer; 2024. Reinforcing layer; 2025. Outer insulation layer; 3. Wire core; 301. Conductor; 302. Semi-conductive shielding layer; 303. Inner insulation layer; 4. Inner cavity; 5. External marking tape; 6. Internal marking tape. 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 This utility model provides an embodiment of a protective environmentally friendly flame-retardant power cable, comprising a cable core 1, the cable core 1 comprising a protective layer 2 and a conductor core 3, the protective layer 2 being disposed on the outside of the conductor core 3, the protective layer 2 comprising an outer sheath 201 and a functional layer 202, the outer sheath 201 being disposed on the outside of the functional layer 202, the functional layer 202 being composed of a flame-retardant layer 2021, an environmentally friendly layer 2022, an armor layer 2023, a reinforcing layer 2024 and an outer insulation layer 2025, the flame-retardant layer 2021, the environmentally friendly layer 2022, the armor layer 2023, the reinforcing layer 2024 and the outer insulation layer 2025 being arranged sequentially from the outside to the inside, the flame-retardant layer 2021 being made of an inorganic flame-retardant polymer, and the environmentally friendly layer 2022 being made of a bio-based polymer.

[0024] The flame-retardant layer 2021 is made of inorganic flame-retardant polymer, which is a mixture of aluminum hydroxide and magnesium hydroxide. When exposed to fire, it can quickly release water of crystallization, dilute the oxygen concentration, and inhibit the combustion reaction, thus exhibiting excellent flame-retardant properties. It can form an effective flame-retardant barrier when the cable encounters a fire source, stably preventing the spread of fire and ensuring that the cable can maintain good structural integrity under extreme conditions such as fire. In addition, the environmentally friendly layer 2022 is made of bio-based polymer material, which is degradable, low in toxicity, and harmless, making the power cable easy to recycle and dispose of after disposal, reducing environmental pollution.

[0025] Please see Figure 4 The armor layer 2023 is made of double galvanized steel strip, the reinforcing layer 2024 is made of aramid fiber woven mesh, and the outer insulation layer 2025 is made of cross-linked polyethylene material.

[0026] The double-galvanized steel strip armor layer 2023 has high strength and toughness, effectively resisting external mechanical damage, such as collisions and compression during construction, protecting the internal structure of the cable from damage, and extending the cable's service life. The aramid fiber braided mesh reinforcement layer 2024 further enhances the overall strength of the cable, improves its tensile and bending resistance, and enables the cable to maintain good performance in complex laying environments. The cross-linked polyethylene outer insulation layer 2025 has good electrical insulation properties and heat resistance, effectively preventing leakage accidents and ensuring the safety of power transmission.

[0027] Please see Figure 3 The core 3 includes a conductor 301, a semi-conductive shielding layer 302 and an inner insulation layer 303. The semi-conductive shielding layer 302 is disposed on the outside of the conductor 301, and the inner insulation layer 303 is disposed on the outside of the semi-conductive shielding layer 302. The inner insulation layer 303 is made of cross-linked polyethylene material.

[0028] The semi-conductive shielding layer 302 is disposed on the outside of the conductor 301, which can uniformly distribute the electric field, reduce the phenomenon of electric field concentration, and reduce the possibility of partial discharge, thereby improving the electrical performance and operational stability of the cable. The cross-linked polyethylene inner insulation layer 303 has good insulation performance, heat resistance and mechanical properties, which can effectively prevent current leakage, ensure the safety and efficiency of power transmission, improve the electrical insulation level of the cable, reduce faults caused by insulation problems, and extend the service life of the cable.

[0029] Please see Figure 2 Multiple cores 3 are provided. An inner cavity 4 is provided inside the functional layer 202 along the outer side of the core 3. The inner cavity 4 is filled with a polypropylene rope.

[0030] The design of multiple conductors 3 can meet different power transmission requirements and improve the power transmission capacity of the cable. The inner cavity 4 and the polypropylene rope filler can fix the position of conductors 3, prevent conductors 3 from shifting and tangling inside the cable, and ensure the stability of the cable structure. The polypropylene rope filler also has a certain buffering effect, which can absorb the impact force on the cable during transportation and installation and protect conductors 3 from damage.

[0031] Please see Figure 1 and Figure 3 The outer sheath 201 has an external identification strip 5 on its outer side, and the inner insulation layer 303 has an internal identification strip 6 on its outer side.

[0032] The external identification band 5 facilitates the identification of cable model, specifications, manufacturer and other information, making it easier to identify and manage during cable laying, installation and maintenance, improving work efficiency and reducing operational errors caused by unclear information. The internal identification band 6 makes it easier to distinguish different wire cores 3, increasing practicality.

[0033] Please see Figure 2 The outer sheath 201 is made of low-smoke halogen-free flame-retardant polyolefin material.

[0034] When cables burn, low-smoke halogen-free materials produce less smoke and do not contain toxic or harmful substances such as halogens, which can effectively reduce the risk of poisoning and suffocation of people at the fire scene, providing more favorable conditions for personnel evacuation and rescue work. At the same time, low-smoke halogen-free flame-retardant polyolefin materials are relatively environmentally friendly and have less pollution to the environment, thus increasing their environmental friendliness.

[0035] Working Principle: During use, when the cable is in normal operating condition, multiple conductors 3 meet different power transmission requirements. The semi-conductive shielding layer 302 provides a uniform electric field distribution, reducing electric field concentration and partial discharge. The cross-linked polyethylene internal insulation layer 303 prevents current leakage, ensuring safe and efficient power transmission. In the functional layer 202, the cross-linked polyethylene outer insulation layer 2025 provides good electrical insulation and heat resistance. The aramid fiber braided mesh reinforcement layer 2024 enhances the overall strength of the cable, improving tensile and bending resistance. The double galvanized steel tape armor layer 2023 resists... External mechanical damage protects the internal structure. When exposed to fire, the inorganic flame retardant polymer flame retardant layer 2021 rapidly releases water of crystallization, dilutes the oxygen concentration, inhibits the combustion reaction, forms a flame retardant barrier, prevents the spread of fire, and ensures the integrity of the cable structure. After the cable is discarded, the bio-based polymer environmentally friendly layer 2022 is degradable, low in toxicity, harmless, and easy to recycle, reducing environmental pollution. Furthermore, the outer sheath 201 is made of low-smoke halogen-free flame-retardant polyolefin material, which produces less smoke and no toxic or harmful substances when burning, reducing the risk of poisoning and suffocation, and is also environmentally friendly.

[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 protective, environmentally friendly, flame-retardant power cable, comprising a cable core (1), characterized in that: The cable core (1) includes a protective layer (2) and a wire core (3). The protective layer (2) is disposed on the outside of the wire core (3). The protective layer (2) includes an outer sheath (201) and a functional layer (202). The outer sheath (201) is disposed on the outside of the functional layer (202). The functional layer (202) is composed of a flame-retardant layer (2021), an environmentally friendly layer (2022), an armor layer (2023), a reinforcement layer (2024), and an outer insulation layer (2025). The flame-retardant layer (2021), the environmentally friendly layer (2022), the armor layer (2023), the reinforcement layer (2024), and the outer insulation layer (2025) are arranged sequentially from the outside to the inside. The flame-retardant layer (2021) is made of an inorganic flame-retardant polymer, and the environmentally friendly layer (2022) is made of a bio-based polymer.

2. The protective, environmentally friendly, flame-retardant power cable according to claim 1, characterized in that: The armor layer (2023) is made of double galvanized steel strip, the reinforcing layer (2024) is made of aramid fiber woven mesh, and the outer insulation layer (2025) is made of cross-linked polyethylene material.

3. The protective, environmentally friendly, flame-retardant power cable according to claim 1, characterized in that: The core (3) includes a conductor (301), a semi-conductive shielding layer (302) and an inner insulation layer (303). The semi-conductive shielding layer (302) is disposed on the outside of the conductor (301), and the inner insulation layer (303) is disposed on the outside of the semi-conductive shielding layer (302).

4. The protective, environmentally friendly, flame-retardant power cable according to claim 3, characterized in that: The inner insulation layer (303) is made of cross-linked polyethylene material.

5. A protective, environmentally friendly, flame-retardant power cable according to claim 4, characterized in that: The core (3) is provided in multiple ways. The functional layer (202) has an inner cavity (4) along the outer side of the core (3). The inner cavity (4) is filled with a filler, which is a polypropylene rope.

6. The protective, environmentally friendly, flame-retardant power cable according to claim 5, characterized in that: The outer sheath (201) is provided with an external identification strip (5), and the outer side of the inner insulation layer (303) is provided with an internal identification strip (6).

7. The protective environmentally friendly flame-retardant power cable according to claim 1, characterized in that: The outer sheath (201) is made of low-smoke halogen-free flame-retardant polyolefin material.

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