Chemical power cable protection device

Abstract

The utility model discloses a chemical power cable protection device, which relates to the technical field of cables and comprises a cable body and a protection sleeve, the protection sleeve is arranged outside the cable body, and the chemical power cable protection device is provided with a three-layer anti-corrosion structure including the protection sleeve, an anti-corrosion layer and an anti-corrosion coating, so that the anti-corrosion performance of a power cable can be remarkably improved, and the service life of the power cable is prolonged. According to the utility model, the splicing protrusions and the splicing grooves are arranged on the protective sleeve, so that the power cable can be quickly disassembled and assembled, is convenient to replace after being damaged, cannot be used on other cables which need to temporarily increase the anti-corrosion performance, and has the advantages of being simple in structure and convenient to use. The cable is simple in structure and wide in application range, and the reinforcing steel wires are arranged in the protective layer, so that the tear resistance of the whole cable can be improved, and the cable is longer in service life, better in ductility and not easy to break in the use process.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a chemical power cable protection device. Background Art

[0002] Power cables are cables used to transmit and distribute electrical 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. Various insulated power cables can be divided into medium and low voltage power cables (35 kV and below), high voltage cables (above 110 kV), extra-high voltage cables (275 to 800 kV) and ultra-high voltage cables (1,000 kV and above) according to voltage levels.

[0003] With the rapid development of the electric power industry, wires and cables have been more widely used in many industries. When used in the chemical field, power cables are easily corroded and damaged when working in a harsh environment containing oils and acid-base corrosive solutions for a long time. However, most of the existing corrosion-resistant cables are only provided with one corrosion-resistant layer, and the corrosion resistance is not strong enough, and the protection effect of the cable is not good. Utility Model Content

[0004] The purpose of the utility model is to provide a chemical power cable protection device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A chemical power cable protection device comprises a cable body and a protective sleeve, wherein the protective sleeve is arranged outside the cable body, and splicing protrusions and splicing grooves are respectively arranged at both ends of the protective sleeve, and the splicing protrusions are adapted to the size of the splicing grooves. The cable body comprises a protective layer, a functional composite layer, a wire core, an insulating layer and a metal shielding layer, the functional composite layer is arranged inside the protective layer, the metal shielding layer is arranged inside the functional composite layer, three wire cores are arranged inside the metal shielding layer, the wire core is wrapped with an insulating layer outside, the functional composite layer comprises an armor layer, a corrosion-resistant layer and a flame-retardant layer, and the armor layer, the corrosion-resistant layer and the flame-retardant layer are arranged in sequence from the outside to the inside.

[0007] As a further solution of the utility model: a plurality of reinforcing steel wires are arranged on the inner circumference of the protective layer.

[0008] As a further solution of the utility model: a corrosion-resistant coating is provided on the outside of the protective layer.

[0009] As a further solution of the utility model: the surface of the protective sleeve is evenly provided with wear-resistant protrusions.

[0010] As a further solution of the utility model: a filler is arranged between the metal shielding layer and the functional composite layer.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model can significantly improve the anti-corrosion performance of the power cable by providing a total of three layers of anti-corrosion structure, namely, a protective sleeve, a corrosion-resistant layer and a corrosion-resistant coating, so that when the power cable is used in a chemical site, it is not easy to be affected by acid and alkali corrosion and affect the normal power supply, and is more suitable for use in chemical sites.

[0013] 2. The utility model is provided with splicing protrusions and splicing grooves on the protective sleeve, which can be quickly disassembled and assembled, and is convenient for replacement after damage. It cannot be used on other cables that need to temporarily increase the anti-corrosion performance, and has a wide range of applications.

[0014] 3. The utility model can improve the tear resistance of the entire cable by arranging a reinforcing steel wire in the protective layer, so that the cable has a longer service life, better ductility, and is not easy to be broken during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure is a schematic diagram of the overall structure of a chemical power cable protection device.

[0016] Figure 2 A chemical power cable protection device Figure 1 Front cross-section of the cable body.

[0017] Figure 3 A chemical power cable protection device Figure 2 A magnified view of the structure at center.

[0018] 1. Cable body; 2. Protective sleeve; 3. Wear-resistant protrusion; 4. Splicing protrusion; 5. Splicing groove; 6. Protective layer; 7. Functional composite layer; 701. Armor layer; 702. Corrosion-resistant layer; 703. Flame-retardant layer; 8. Wire core; 9. Insulation layer; 10. Metal shielding layer; 11. Filler; 12. Reinforced steel wire; 13. Corrosion-resistant coating. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1In an embodiment of the utility model, a chemical power cable protection device includes a cable body 1 and a protective sleeve 2. The protective sleeve 2 is arranged outside the cable body 1. Both ends of the protective sleeve 2 are respectively provided with a splicing protrusion 4 and a splicing groove 5. The splicing protrusion 4 is adapted to the size of the splicing groove 5. The protective sleeve 2 is a polyurethane sheath. The surface of the protective sleeve 2 is evenly provided with wear-resistant protrusions 3. The wear-resistant protrusions 3 can improve the wear resistance of the protective sleeve 2 and extend the service life of the protective sleeve 2.

[0021] See also Figure 2-3 The cable body 1 includes a protective layer 6, a functional composite layer 7, a core 8, an insulating layer 9 and a metal shielding layer 10. The protective layer 6 is provided with a functional composite layer 7, and the functional composite layer 7 is provided with a metal shielding layer 10. The metal shielding layer 10 can shield external signals, so that the core 8 is protected from external electromagnetic interference, making the cable operation more stable. Three cores 8 are arranged in the metal shielding layer 10, and the core 8 is wrapped with an insulating layer 9. The functional composite layer 7 includes an armor layer 701, a corrosion-resistant layer 702 and a resistance layer 703. The flame retardant layer 703, the armor layer 701, the corrosion resistant layer 702 and the flame retardant layer 703 are arranged in sequence from the outside to the inside. The armor layer 701 can increase the mechanical strength of the cable and improve the corrosion resistance. The corrosion resistant layer 702 is a polytetrafluoroethylene layer. Polytetrafluoroethylene has the characteristics of acid and alkali resistance and resistance to various organic solvents. It is almost insoluble in all solvents. Therefore, it can provide acid and alkali resistance protection for the wire core 8 inside the cable. The outside of the protective layer 6 is provided with a corrosion resistant coating 13, and the corrosion resistant coating 13 is a polyurethane anti-corrosion topcoat.

[0022] See also Figure 2 A plurality of reinforcing steel wires 12 are arranged on the inner circumference of the protective layer 6. The reinforcing steel wires 12 can improve the tear resistance of the entire cable, so that the cable has a longer service life, better ductility, and is not easy to be broken during use.

[0023] See also Figure 2 A filler 11 is arranged between the metal shielding layer 10 and the functional composite layer 7. The filler 11 is flame-retardant particles. The flame-retardant particles and the flame-retardant layer 703 form a double flame-retardant protection structure. The flame-retardant layer 703 is a flame-retardant wrapping tape.

[0024] The working principle of the utility model is:

[0025] When in use, the protective sleeve 2 is wrapped around the outside of the cable body 1, and the splicing protrusion 4 is inserted into the splicing groove 5 to close the protective sleeve 2. When corrosive gas or liquid contacts the cable, the protective sleeve 2 first protects the cable. When the protective sleeve 2 is corroded, the corrosion-resistant coating 13 arranged on the cable body 1 can further protect the internal structure from corrosion. When the corrosion-resistant coating 13 is damaged, the corrosion-resistant layer 702 in the functional composite layer 7 can further protect the internal structure from corrosion, which can greatly enhance the corrosion resistance of the cable.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A chemical power cable protection device, comprising a cable body (1) and a protective sleeve (2), characterized in that: The cable body (1) is provided with a protective sleeve (2) on the outside, and a splicing protrusion (4) and a splicing groove (5) are respectively provided at two ends of the protective sleeve (2), and the splicing protrusion (4) and the splicing groove (5) are matched in size. The cable body (1) comprises a protective layer (6), a functional composite layer (7), a wire core (8), an insulating layer (9) and a metal shielding layer (10), and the protective layer (6) is provided with a functional composite layer (7), and the functional composite layer (7) is provided with a metal shielding layer (10), and three wire cores (8) are provided in the metal shielding layer (10), and the wire core (8) is wrapped with an insulating layer (9) on the outside, and the functional composite layer (7) comprises an armor layer (701), a corrosion-resistant layer (702) and a flame-retardant layer (703), and the armor layer (701), the corrosion-resistant layer (702) and the flame-retardant layer (703) are arranged in sequence from the outside to the inside.

2. A chemical power cable protection device according to claim 1, characterized in that: A plurality of reinforcing steel wires (12) are arranged on the inner circumference of the protective layer (6).

3. A chemical power cable protection device according to claim 1, characterized in that: The outside of the protective layer (6) is provided with a corrosion-resistant coating (13).

4. A chemical power cable protection device according to claim 1, characterized in that: The surface of the protective sleeve (2) is evenly provided with wear-resistant protrusions (3).

5. A chemical power cable protection device according to claim 1, characterized in that: A filler (11) is provided between the metal shielding layer (10) and the functional composite layer (7).

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