Anti-corrosion and anti-biting polyolefin power cable

Abstract

The utility model discloses an anti-corrosion anti-bite polyolefin power cable, comprising a cable core, the cable core comprises a wire core and a water-blocking petroleum jelly filling layer, the outside of the cable core is provided with a polyester belting layer, the polyester belting layer is attached to the outer wall of the water-blocking petroleum jelly filling layer for winding connection, the outside of the polyester belting layer is provided with an inner lining layer, and the outer wall of the inner lining layer is provided with an outer lining layer. A polyester belting layer is arranged outside the inner lining layer, the inner lining layer and the polyester belting layer are formed through extrusion, an armor layer is arranged outside the inner lining layer, an anti-corrosion and anti-biting interlayer is arranged outside the armor layer, a polyolefin outer sheath is arranged outside the anti-corrosion and anti-biting interlayer, and the armor layer, the anti-corrosion and anti-biting interlayer and the polyolefin outer sheath are formed through extrusion. The anti-corrosion and anti-biting interlayer is arranged in the power cable, the interlayer is of a multi-layer structure, the anti-corrosion and anti-biting performance of the cable is improved through the interlayer, the cable can be normally used in a humid environment, the cable can be prevented from being bitten and damaged by animals, and the service life of the power cable is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of power cables, in particular to a corrosion-resistant and bite-resistant polyolefin power cable. Background Art

[0002] Cable is a wire made of one or more mutually insulated conductors and an outer insulating protective layer. It is laid underground, in the air, etc. The cable is generally composed of three parts: conductor, insulating layer, and protective layer. There are usually two types of power cables and control cables. Power cables are mainly used for the transmission and distribution of electric energy. Power cables are cables used to transmit and distribute electric energy. Power cables are commonly used in urban underground power grids, power station lead-out lines, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas. In power lines, the proportion of cables is gradually increasing. Power cables are cable products used to transmit and distribute high-power electric energy in the trunk lines of the power system, including 1-500KV and above various voltage levels, various insulation power cables.

[0003] The Chinese patent publication number is CN208093222U, and the authorization announcement date is November 13, 2018. An animal-resistant power cable includes an aluminum alloy conductor, the outer side of the aluminum alloy conductor is wrapped with a rubber layer, and the outer side of the rubber layer is provided with a glass fiber rope filling layer, and the glass fiber rope filling layer is wrapped from the inside to the outside in order of a polypropylene fiber layer, a carbon fiber layer, a fireproof layer, and a wear-resistant layer. The utility model greatly improves the tensile performance of the entire cable by setting a polypropylene fiber layer and a carbon fiber layer, and the polypropylene fiber layer and the carbon fiber layer are both a mesh structure made of left and right spiral winding, which better guarantees the tensile performance of the power cable and prolongs its service life. In addition, the fireproof layer is woven from rock wool rope, and the flame retardancy of the inorganic material of the rock wool rope is utilized to resist direct contact between the external open flame and the cable. At the same time, the rock wool rope has a certain tensile strength and is not easy to break, which prevents rats and ants from directly causing damage to the cable.

[0004] Existing power cables use polyolefin as the outer protective layer. The performance of polyolefin is relatively simple. The outer surface of the cable is easily corroded when used in a humid environment and is easily damaged by animals biting or gnawing, which interrupts the transmission of electricity or communications, reduces the service life of the power cable, and cannot meet the use requirements. Utility Model Content

[0005] The purpose of the utility model is to provide a corrosion-resistant and anti-gnaw polyolefin power cable to solve the problem proposed in the above background technology that the existing power cable adopts polyolefin as the outer protective layer, the performance of polyolefin is relatively single, the cable is easily corroded when used in a humid environment, and is easily bitten and damaged by animals, which interrupts the transmission of electricity or communication, reduces the service life of the power cable, and cannot meet the use requirements.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a corrosion-resistant and anti-bite polyolefin power cable, comprising a cable core, the cable core comprising a wire core and a water-blocking petroleum jelly filling layer, five wire cores are arranged, a polyester tape layer is arranged on the outside of the cable core, and the polyester tape layer is wrapped and connected with the outer wall of the water-blocking petroleum jelly filling layer, an inner lining layer is arranged on the outside of the polyester tape layer, and the inner lining layer and the polyester tape layer are formed by extrusion, an armor layer is arranged on the outside of the inner lining layer, and the armor layer is formed with the inner lining layer, an anti-corrosion and anti-bite interlayer is arranged on the outside of the armor layer, a polyolefin outer sheath is arranged on the outside of the anti-corrosion and anti-bite interlayer, and the armor layer, the anti-corrosion and anti-bite interlayer and the polyolefin outer sheath are formed by extrusion.

[0007] Preferably, the wire core includes a conductor, an insulating layer, a shielding layer and a waterproof layer, and the conductor is formed by twisting a plurality of copper wires with high compression, the insulating layer is arranged on the outside of the conductor, the shielding layer is arranged on the outside of the insulating layer, the waterproof layer is arranged on the outside of the shielding layer, and the conductor, the insulating layer, the shielding layer and the waterproof layer are formed by extrusion.

[0008] Preferably, the anti-corrosion and anti-bite interlayer includes a polyurethane layer, a chlorosulfonated polyethylene layer and a polypropylene resin layer, the chlorosulfonated polyethylene layer is arranged on the outside of the polyurethane layer, the polypropylene resin layer is arranged on the outside of the chlorosulfonated polyethylene layer, and the polyurethane layer, the chlorosulfonated polyethylene layer and the polypropylene resin layer are arranged as a whole, and the polyurethane layer is in contact with the armor layer.

[0009] Preferably, carbon fiber filaments and glass fiber filaments are arranged inside the polypropylene resin layer, and at least six carbon fiber filaments and glass fiber filaments are arranged, and the carbon fiber filaments and glass fiber filaments are arranged obliquely and equidistantly inside the polypropylene resin layer. The carbon fiber filaments and glass fiber filaments are cross-woven in a diamond shape inside the polypropylene resin layer, and the carbon fiber filaments and glass fiber filaments are arranged as a whole with the polypropylene resin layer.

[0010] Preferably, the polyolefin outer sheath comprises a cross-linked polyolefin layer and an epoxy anti-corrosion paint coating, the epoxy anti-corrosion paint coating is arranged on the outside of the cross-linked polyolefin layer, and the epoxy anti-corrosion paint coating and the cross-linked polyolefin layer are coated as a whole, and the cross-linked polyolefin layer is bonded to the polypropylene resin layer.

[0011] Preferably, the five wire cores are arranged equidistantly in a circle, and the water-blocking petroleum jelly filling layer is arranged in the gaps between the five wire cores.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model device is provided with an anti-corrosion and anti-bite interlayer, and the anti-corrosion and anti-bite interlayer is composed of a polyurethane layer, a chlorosulfonated polyethylene layer and a polypropylene resin layer to form a multilayer structure. Polyurethane is a polymer material formed by a polycondensation reaction of polyols and polyisocyanates, and has excellent anti-corrosion function. Chlorosulfonated polyethylene is a high-performance rubber material prepared by a chlorination and chlorosulfonation reaction of low-density polyethylene or high-density polyethylene, and has excellent physical and chemical properties, and can play a role of moisture-proof and waterproof. The polypropylene resin has good impact resistance, can better protect the product from external impact, has a low water absorption rate, and can also be used well in a humid environment. The carbon fiber filaments and the glass fiber filaments are crossed and woven into a net in a diamond shape, which not only increases the toughness of the polypropylene resin layer, but also increases the anti-bite performance of the polypropylene resin layer. The polyurethane layer, the chlorosulfonated polyethylene layer and the polypropylene resin layer are combined to improve the anti-corrosion and anti-bite effect of the cable.

[0014] The utility model device is provided with a cross-linked polyolefin layer and an epoxy anti-corrosion paint coating. The polyolefin is subjected to radiation cross-linking treatment. Radiation cross-linking connects the linear chains of the polymer to each other to form a network structure by introducing a cross-linking agent, thereby changing the physical and chemical properties of the polymer, making it have higher strength, heat resistance and resistance to chemical corrosion. The epoxy anti-corrosion paint coating can resist corrosion from a variety of chemical solvents and acids and alkalis, thereby improving the anti-corrosion effect of the power cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a cross-sectional view of the wire core of the utility model;

[0017] Figure 3 This is a diagram of the anti-corrosion and anti-bite sandwich structure of the utility model;

[0018] Figure 4 This is a structural diagram of the polyolefin outer sheath of the utility model;

[0019] Figure 5 This is a cross-sectional view of the polypropylene resin layer of the present utility model.

[0020] In the figure: 1. Cable core; 2. Wire core; 3. Water-blocking petroleum jelly filling layer; 4. Polyester tape layer; 5. Inner lining layer; 6. Armor layer; 7. Anti-corrosion and anti-bite interlayer; 8. Polyolefin outer sheath; 9. Conductor; 10. Insulation layer; 11. Shielding layer; 12. Waterproof layer; 13. Polyurethane layer; 14. Chlorosulfonated polyethylene layer; 15. Polypropylene resin layer; 16. Cross-linked polyolefin layer; 17. Epoxy anti-corrosion paint coating; 18. Carbon fiber yarn; 19. Glass fiber yarn. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] See also Figure 1-5 The utility model provides an embodiment: an anti-corrosion and anti-bite polyolefin power cable, comprising a cable core 1, the cable core 1 comprising a wire core 2 and a water-blocking petroleum jelly filling layer 3, five wire cores 2 are provided, a polyester tape layer 4 is provided on the outside of the cable core 1, and the polyester tape layer 4 is wound and connected with the outer wall of the water-blocking petroleum jelly filling layer 3, an inner lining layer 5 is provided on the outside of the polyester tape layer 4, and the inner lining layer 5 and the polyester tape layer 4 are formed by extrusion, an armor layer 6 is provided on the outside of the inner lining layer 5, and the armor layer 6 is in contact with the inner lining layer 5, an anti-corrosion and anti-bite interlayer 7 is provided on the outside of the armor layer 6, a polyolefin outer sheath 8 is provided on the outside of the anti-corrosion and anti-bite interlayer 7, and the armor layer 6, the anti-corrosion and anti-bite interlayer 7 and the polyolefin outer sheath 8 are formed by extrusion.

[0023] See also Figure 1 and Figure 2 The core 2 includes a conductor 9, an insulating layer 10, a shielding layer 11 and a waterproof layer 12, and the conductor 9 is formed by twisting a plurality of copper wires with high compression, the insulating layer 10 is arranged on the outside of the conductor 9, the shielding layer 11 is arranged on the outside of the insulating layer 10, and the waterproof layer 12 is arranged on the outside of the shielding layer 11, and the conductor 9, the insulating layer 10, the shielding layer 11 and the waterproof layer 12 are formed by extrusion.

[0024] See also Figure 1 and Figure 3 The anti-corrosion and anti-bite interlayer 7 includes a polyurethane layer 13, a chlorosulfonated polyethylene layer 14 and a polypropylene resin layer 15. The chlorosulfonated polyethylene layer 14 is arranged on the outside of the polyurethane layer 13, and the polypropylene resin layer 15 is arranged on the outside of the chlorosulfonated polyethylene layer 14. The polyurethane layer 13, the chlorosulfonated polyethylene layer 14 and the polypropylene resin layer 15 are arranged as a whole. The polyurethane layer 13 is bonded to the armor layer 6. Polyurethane is a polymer material formed by a condensation reaction of polyols and polyisocyanates, and has excellent anti-corrosion function. Chlorosulfonated polyethylene is a high-performance rubber material made by chlorination and chlorosulfonation of low-density polyethylene or high-density polyethylene. It has excellent physical and chemical properties and can play a moisture-proof and waterproof role. The polypropylene resin has good impact resistance and can better protect the product from external impact. It has a low water absorption rate and can be used well in a humid environment. The combination of the polyurethane layer 13, the chlorosulfonated polyethylene layer 14 and the polypropylene resin layer 15 improves the anti-corrosion and anti-bite effect of the cable.

[0025] See also Figure 3 and Figure 5The polypropylene resin layer 15 is provided with carbon fiber filaments 18 and glass fiber filaments 19. There are at least six carbon fiber filaments 18 and glass fiber filaments 19, and the carbon fiber filaments 18 and glass fiber filaments 19 are arranged obliquely and equidistantly inside the polypropylene resin layer 15. The carbon fiber filaments 18 and glass fiber filaments 19 are crossed and woven in a diamond shape inside the polypropylene resin layer 15, and the carbon fiber filaments 18 and glass fiber filaments 19 are integrated with the polypropylene resin layer 15. The carbon fiber filaments 18 and glass fiber filaments 19 are crossed and woven into a diamond shape to form a net, which not only increases the toughness of the polypropylene resin layer 15, but also increases the anti-bite performance of the polypropylene resin layer 15.

[0026] See also Figure 1 and Figure 4 The polyolefin outer sheath 8 includes a cross-linked polyolefin layer 16 and an epoxy anti-corrosion paint coating 17. The epoxy anti-corrosion paint coating 17 is arranged on the outside of the cross-linked polyolefin layer 16, and the epoxy anti-corrosion paint coating 17 is coated with the cross-linked polyolefin layer 16 as a whole. The cross-linked polyolefin layer 16 is bonded to the polypropylene resin layer 15. The polyolefin is subjected to radiation cross-linking treatment. Radiation cross-linking introduces a cross-linking agent to connect the linear chains of the polymer to each other to form a network structure, thereby changing the physical and chemical properties of the polymer, so that it has higher strength, heat resistance and chemical corrosion resistance. The epoxy anti-corrosion paint coating 17 can resist corrosion from a variety of chemical solvents and acids and alkalis, thereby improving the anti-corrosion effect of the polyolefin outer sheath 8.

[0027] See also Figure 1 The five wire cores 2 are arranged equidistantly in a circle, and the water-blocking petroleum jelly filling layer 3 is arranged in the gaps between the five wire cores 2 .

[0028] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant and anti-bite polyolefin power cable, comprising a cable core (1), characterized in that: The cable core (1) comprises a wire core (2) and a water-blocking petroleum jelly filling layer (3), wherein the wire core (2) is provided with five wire cores, a polyester tape layer (4) is provided on the outside of the cable core (1), and the polyester tape layer (4) is wound and connected to the outer wall of the water-blocking petroleum jelly filling layer (3), an inner lining layer (5) is provided on the outside of the polyester tape layer (4), and the inner lining layer (5) and the polyester tape layer (4) are formed by extrusion, an armor layer (6) is provided on the outside of the inner lining layer (5), and the armor layer (6) and the inner lining layer (5) are in contact, an anti-corrosion and anti-bite interlayer (7) is provided on the outside of the armor layer (6), a polyolefin outer sheath (8) is provided on the outside of the anti-corrosion and anti-bite interlayer (7), and the armor layer (6), the anti-corrosion and anti-bite interlayer (7) and the polyolefin outer sheath (8) are formed by extrusion.

2. The anti-corrosion and anti-bite polyolefin power cable according to claim 1, characterized in that: The wire core (2) comprises a conductor (9), an insulating layer (10), a shielding layer (11) and a waterproof layer (12); the conductor (9) is formed by twisting a plurality of copper wires in a highly compressed manner; the insulating layer (10) is arranged outside the conductor (9); the shielding layer (11) is arranged outside the insulating layer (10); the waterproof layer (12) is arranged outside the shielding layer (11); and the conductor (9), the insulating layer (10), the shielding layer (11) and the waterproof layer (12) are formed by extrusion.

3. The anti-corrosion and anti-bite polyolefin power cable according to claim 1, characterized in that: The anti-corrosion and anti-bite interlayer (7) comprises a polyurethane layer (13), a chlorosulfonated polyethylene layer (14) and a polypropylene resin layer (15); the chlorosulfonated polyethylene layer (14) is arranged outside the polyurethane layer (13); the polypropylene resin layer (15) is arranged outside the chlorosulfonated polyethylene layer (14); the polyurethane layer (13), the chlorosulfonated polyethylene layer (14) and the polypropylene resin layer (15) are arranged as a whole; the polyurethane layer (13) is in contact with the armor layer (6).

4. The anti-corrosion and anti-bite polyolefin power cable according to claim 3, characterized in that: Carbon fiber filaments (18) and glass fiber filaments (19) are arranged inside the polypropylene resin layer (15), at least six carbon fiber filaments (18) and six glass fiber filaments (19) are arranged, and the carbon fiber filaments (18) and the glass fiber filaments (19) are arranged obliquely and equidistantly inside the polypropylene resin layer (15), the carbon fiber filaments (18) and the glass fiber filaments (19) are arranged in a cross-shaped diamond-shaped weave inside the polypropylene resin layer (15), and the carbon fiber filaments (18) and the glass fiber filaments (19) are arranged integrally with the polypropylene resin layer (15).

5. The anti-corrosion and anti-bite polyolefin power cable according to claim 3, characterized in that: The polyolefin outer sheath (8) comprises a cross-linked polyolefin layer (16) and an epoxy anti-corrosion paint coating (17), wherein the epoxy anti-corrosion paint coating (17) is arranged outside the cross-linked polyolefin layer (16), and the epoxy anti-corrosion paint coating (17) and the cross-linked polyolefin layer (16) are coated as a whole, and the cross-linked polyolefin layer (16) is bonded to the polypropylene resin layer (15).

6. The anti-corrosion and anti-bite polyolefin power cable according to claim 1, characterized in that: The five wire cores (2) are arranged in a circular shape at equal intervals, and the water-blocking petroleum jelly filling layer (3) is arranged in the gaps between the five wire cores (2).

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