An outer sheath for electrical engineering cables

Abstract

The utility model relates to cable sheath technical field discloses an outer sheath for electrical engineering cable, including cable and circular ring, the cable is provided with a plurality of, a plurality of cable outside connection is provided with the conductive shielding layer, the conductive shielding layer outer circle surface connection is provided with the main sheath layer, the main sheath layer outer circle surface connection is provided with the fibre reinforced layer, the fibre reinforced layer outer circle surface connection is provided with the flame -retardant protective layer, the flame -retardant protective layer outer circle surface connection is provided with the elastic pad layer, the elastic pad layer inside surrounds the flame -retardant protective layer connection and is provided with a plurality of convex rib strip, the utility model discloses through setting the conductive shielding layer, can shield the outside electromagnetic interference, improves the stability of cable signal transmission, through setting the main sheath layer, can carry out the preliminary buffer protection to the outside impact, through setting the fibre reinforced layer, can further improve the tensile strength of cable whole, avoids the cable and appears the condition of rupture.

Description

Technical Field

[0001] This utility model relates to the field of cable sheath technology, specifically to an outer sheath for electrical engineering cables. Background Technology

[0002] The cable sheath material is located outside the cable core material. Together with the conductive core material inside the cable, the cable sheath material constitutes the cable. Improving the flexibility and strength of the cable sheath material is beneficial to the long-term use of cable materials in electrical engineering. Although some methods have been studied to improve the resistance to brittle fracture, antibacterial properties, and thermal stability of cable sheath materials, the effects are not obvious. Therefore, an outer sheath for electrical engineering cables is proposed. Utility Model Content

[0003] The purpose of this utility model is to provide an outer sheath for electrical engineering cables to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: It includes a cable and a ring, wherein multiple cables are provided, and a conductive shielding layer is connected to the outer side of each cable. A main sheath layer is connected to the outer surface of the conductive shielding layer, a fiber reinforcement layer is connected to the outer surface of the main sheath layer, a flame-retardant protective layer is connected to the outer surface of the fiber reinforcement layer, an elastic pad layer is connected to the outer surface of the flame-retardant protective layer, multiple raised ribs are connected around the flame-retardant protective layer inside the elastic pad layer, metal wires are connected inside the raised ribs, and four guide grooves are formed on the outer surface of the elastic pad layer.

[0005] Preferably, the inner ring of the circular ring is connected with four limiting blocks, and the limiting blocks are slidably disposed inside the guide groove. There are two sets of circular rings, which are respectively disposed at the front and rear ends of the cable, and a protective corrugated pipe is connected between the two circular rings.

[0006] Preferably, the fiber reinforcement layer is made of aramid fiber woven tape with a thickness of 0.3 mm.

[0007] Preferably, the surface of the elastic pad is covered with a layer of fluorocarbon resin varnish with added nano-photocatalyst, the thickness of which is ten millimeters.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a conductive shielding layer, external electromagnetic interference can be shielded, improving the stability of cable signal transmission; by setting a main sheath layer, initial buffer protection against external impacts can be provided; by setting a fiber reinforcement layer, the overall tensile strength of the cable can be further improved, preventing cable breakage; by setting a flame-retardant protective layer, the outer sheath of the cable can be prevented from burning, improving the safety of cable use; by setting an elastic pad and convex ribs, secondary buffer protection can be provided for the cable, while the soft metal wires inside the convex ribs can improve the cable's torsional strength. Attached Figure Description

[0009] Figure 1 This is a front view schematic diagram of the outer sheath structure for an electrical engineering cable. Figure 2 This is a side view schematic diagram of the outer sheath structure of an electrical engineering cable; Figure 3 This is a side sectional view of the outer sheath of an electrical engineering cable.

[0010] In the diagram: 1. Cable; 2. Conductive shielding layer; 3. Main sheath layer; 4. Fiber reinforcement layer; 5. Flame retardant protective layer; 6. Elastic pad layer; 7. Raised rib; 8. Soft metal wire; 9. Guide groove; 10. Ring; 11. Limiting block; 12. Protective corrugated pipe. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0012] Please see Figures 1-3 This utility model provides a technical solution, including a cable 1 and a ring 10. Multiple cables 1 are provided. A conductive shielding layer 2 is connected to the outer side of the multiple cables 1. A main sheath layer 3 is connected to the outer surface of the conductive shielding layer 2. A fiber reinforcement layer 4 is connected to the outer surface of the main sheath layer 3. A flame-retardant protective layer 5 is connected to the outer surface of the fiber reinforcement layer 4. An elastic pad layer 6 is connected to the outer surface of the flame-retardant protective layer 5. Multiple raised ribs 7 are connected around the flame-retardant protective layer 5 inside the elastic pad layer 6. Metal wires 8 are connected inside the raised ribs 7. Four guide grooves 9 are opened on the outer surface of the elastic pad layer 6.

[0013] The inner ring 10 is connected with four limiting blocks 11, and the limiting blocks 11 are slidably disposed inside the guide groove 9. There are two sets of rings 10, which are respectively disposed at the front and rear ends of the cable. A protective corrugated pipe 12 is connected between the two rings 10. The function of the two rings 10 and the protective corrugated pipe 12 is to limit the cable 1 and prevent the cable 1 from shaking. At the same time, the protective corrugated pipe 12 can further protect the cable 1 and prevent the cable 1 from being damaged by external pressure.

[0014] The conductive shielding layer 2 is made of graphene with a solid content of 15%. The graphene material provides excellent conductivity and electromagnetic shielding, effectively blocking external electromagnetic interference and ensuring the stability of cable signal transmission. Simultaneously, the high strength and toughness of graphene also give the conductive shielding layer 2 good mechanical properties, improving the overall tensile strength of the cable.

[0015] The main sheath layer 3 is made of a blend of cross-linked polyethylene and thermoplastic polyurethane in a 7:3 ratio, reinforced with 5% nano-silica. This combination of cross-linked polyethylene and thermoplastic polyurethane as the main materials, along with the addition of 5% nano-silica for reinforcement, gives the main sheath layer 3 not only good elasticity and abrasion resistance, but also high strength and toughness. The addition of cross-linked polyethylene ensures that the main sheath layer 3 maintains stable performance under both high and low temperature conditions, and is less prone to aging or hardening. The thermoplastic polyurethane provides the main sheath layer 3 with good processability and recyclability. The addition of nano-silica further improves the hardness and abrasion resistance of the main sheath layer 3, enabling it to better resist external impacts and wear, thereby effectively protecting the cable from damage.

[0016] The fiber reinforcement layer 4 is made of aramid fiber braided tape with a thickness of 0.3 mm. Its function lies in providing the fiber reinforcement layer 4 with excellent properties such as high strength, high modulus, high temperature resistance, and chemical corrosion resistance. Its 0.3 mm thickness ensures sufficient strength while avoiding material waste and increased costs due to excessive thickness. The high strength characteristics of aramid fiber allow the fiber reinforcement layer 4 to effectively improve the overall tensile strength of the cable, preventing breakage during long-term use. Simultaneously, the high temperature and chemical corrosion resistance of aramid fiber enable the fiber reinforcement layer 4 to maintain stable performance in harsh environments, extending the cable's service life.

[0017] The flame-retardant protective layer 5 is made of a ceramicized silicone rubber composite coating, composed of a silicone rubber matrix, 30% ceramic powder, and 5% flame retardant. Its thickness is set at 200 mm. The function of this 200 mm layer is to utilize a ceramicized silicone rubber composite coating as its main material, consisting of a silicone rubber matrix, 30% ceramic powder, and 5% flame retardant. The silicone rubber matrix provides the coating with good elasticity and weather resistance, allowing the flame-retardant protective layer 5 to adapt to various complex environments. The addition of ceramic powder enables the coating to form a hard ceramic layer at high temperatures, effectively preventing the spread and combustion of flames. The addition of flame retardant further improves the flame-retardant performance of the coating, allowing it to maintain stable performance under extreme conditions such as fires, protecting the cable from damage. Simultaneously, the 200 mm thickness ensures sufficient flame-retardant effect while avoiding material waste and increased costs due to excessive thickness.

[0018] The surface of the elastic pad 6 is covered with a layer of fluorocarbon resin varnish with added nano photocatalyst, which is 10 mm thick and its function is to...

[0019] The fluorocarbon resin varnish covering the surface of the elastic pad 6, infused with nano-photocatalysts, exhibits excellent weather resistance, corrosion resistance, and self-cleaning properties. The fluorocarbon resin varnish can resist the erosion of natural factors such as ultraviolet radiation and wind and rain for a long time, maintaining the smoothness and aesthetics of the elastic pad 6 surface. The addition of nano-photocatalysts endows the coating with the ability to photocatalytically degrade organic pollutants, effectively decomposing stains and microorganisms on the surface of the cable outer sheath, keeping it clean and hygienic. The 10mm thickness ensures sufficient protection while avoiding material waste and increased costs associated with excessive thickness. This allows the elastic pad 6 to not only possess excellent cushioning and protective performance but also good durability and self-cleaning properties, maintaining the stability and service life of the cable outer sheath over a long period.

[0020] Working Principle: During use, cable 1 is first protected by layers of structures including conductive shielding layer 2, main sheath layer 3, fiber reinforcement layer 4, flame-retardant protective layer 5, and elastic pad layer 6. Then, using the cooperation of ring 10 and limiting block 11, cable 1 is limited inside the guide groove 9, and further protected by protective corrugated pipe 12. During use, conductive shielding layer 2 shields against external electromagnetic interference, ensuring the stability of cable signal transmission; main sheath layer 3 provides initial buffer protection against external impacts; fiber reinforcement layer 4 improves the overall tensile strength of the cable, preventing cable breakage; flame-retardant protective layer 5 prevents the outer sheath of the cable from burning, improving the safety of cable use; elastic pad layer 6 and convex strip 7 provide secondary buffer protection for the cable, while the metal wires 8 inside the convex strip 7 improve the cable's torsional strength.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An outer sheath for an electrical engineering cable, comprising a cable (1) and a ring (10), characterized in that: The cable (1) is provided in multiple ways. A conductive shielding layer (2) is connected to the outside of the multiple cables (1). A main sheath layer (3) is connected to the outer surface of the conductive shielding layer (2). A fiber reinforcement layer (4) is connected to the outer surface of the main sheath layer (3). A flame-retardant protective layer (5) is connected to the outer surface of the fiber reinforcement layer (4). An elastic pad layer (6) is connected to the outer surface of the flame-retardant protective layer (5). Multiple convex ribs (7) are connected around the flame-retardant protective layer (5) inside the elastic pad layer (6). Metal wires (8) are connected inside the convex ribs (7). Four guide grooves (9) are opened on the outer surface of the elastic pad layer (6).

2. The outer sheath for electrical engineering cables according to claim 1, characterized in that: The inner ring (10) is connected to four limiting blocks (11), and the limiting blocks (11) are slidably disposed inside the guide groove (9). The ring (10) is provided in two sets, which are respectively disposed at the front and rear ends of the cable, and a protective corrugated pipe (12) is connected between the two rings (10).

3. The outer sheath for electrical engineering cables according to claim 1, characterized in that: The fiber reinforcement layer (4) is made of aramid fiber woven tape with a thickness of 0.3 mm.

4. The outer sheath for electrical engineering cables according to claim 1, characterized in that: The surface of the elastic pad (6) is covered with a layer of fluorocarbon resin varnish with added nano-photocatalyst, and its thickness is ten millimeters.

Images