CN219143862U

CN219143862U - Novel anti-electromagnetic interference wear-resistant rat-proof and termite-proof high-temperature-resistant environment-friendly variable-frequency power cable

Info

Publication number: CN219143862U
Application number: CN202223177846.1U
Authority: CN
Inventors: 陈海萍; 邵士东; 王磊; 张旭; 房忠军; 杨才领
Original assignee: Jiangsu Jiangyang Power Cable Co ltd
Current assignee: Jiangsu Jiangyang Power Cable Co ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-06-06
Anticipated expiration: 2032-11-29

Abstract

The utility model relates to a novel electromagnetic interference resistant, wear-resistant, rat-proof and termite-resistant environment-friendly variable-frequency power cable. The power cable comprises three main insulation wire cores and three ground insulation wire cores; the main insulation wire core comprises a main wire core conductor, a main wire core insulation layer and a main wire core sheath, the ground insulation wire core comprises a ground wire core conductor, a ground wire core insulation layer and a ground wire core sheath, and flame-retardant filling is arranged between the three main insulation wire cores and the three ground insulation wire cores; the three main insulation wire cores and the three ground insulation wire cores are externally provided with a braiding shielding layer outside the cable core which is formed by wrapping a tape; an inner sheath is extruded outside the braided shielding layer; an armor layer is arranged outside the inner sheath; an outer sheath is arranged outside the armor layer. The utility model has the performances of electromagnetic wave interference resistance, wear resistance, rat and termite resistance, high temperature resistance, long service life and the like, and is widely applied to industries of petroleum, metallurgy, power generation, railways and the like.

Description

Novel anti-electromagnetic interference wear-resistant rat-proof and termite-proof high-temperature-resistant environment-friendly variable-frequency power cable

Technical Field

The utility model relates to a variable frequency cable, in particular to a novel electromagnetic interference-resistant, wear-resistant, rat-proof and termite-resistant environment-friendly variable frequency power cable.

Background

Because of the advantages of small volume, low cost, energy saving, large speed regulating range, constant power, constant rotation speed and the like of the variable frequency motor, the variable frequency motor is widely applied to industries such as mines, metallurgy, papermaking, chemical industry and the like, and has very broad prospect under the large social background advocated for energy saving at present. The wide application of variable frequency motor has driven the application of variable frequency cable, and the demand of cable will further increase, along with the technology is mature constantly, and competitiveness continues to strengthen.

In order to meet the use requirement, a plurality of novel variable frequency cables are being continuously developed, the existing low-voltage variable frequency power cable is poor in stretch-proof effect, the wires inside the cable are easy to damage, the use of the cable is affected, the cable is extruded in the transportation process, the cable is easy to damage, and the compression-resistant effect is poor. And the special cable for the variable frequency motor has poor electromagnetic induction resistance, high working capacitance and low transmission performance in the use process, and short-term scrapping of the cable is caused by the reasons, so that the service life of equipment is influenced.

Disclosure of Invention

The utility model aims to provide a novel electromagnetic interference-resistant, wear-resistant, rat-proof and termite-proof high-temperature-resistant environment-friendly variable-frequency power cable with high service life, which is resistant to electromagnetic interference, wear-resistant, rat-proof and termite-proof, so as to solve the problems in the prior art.

The technical scheme of the utility model is as follows: the novel electromagnetic interference resistant, abrasion resistant, rat and termite resistant, environment-friendly and variable-frequency power cable comprises three main insulation wire cores and three ground insulation wire cores;

the three main insulation wire cores are uniformly arranged in the center of the power cable, the main insulation wire cores comprise main wire core conductors, main wire core insulation layers and main wire core jackets, the main wire core insulation layers are arranged outside the main wire core conductors, and the main wire core jackets are arranged outside the main wire core insulation layers;

the three ground insulation wire cores are respectively and uniformly arranged among the three main insulation wire cores, each ground insulation wire core comprises a ground wire core conductor, a ground wire core insulation layer and a ground wire core sheath, the ground wire core insulation layer is arranged outside the ground wire core conductor, and the ground wire core sheath is arranged outside the ground wire core insulation layer;

flame retardant filling is arranged between the three main insulating wire cores and the three ground insulating wire cores;

the three main insulation wire cores and the three ground insulation wire cores are externally provided with wrapping tape cabling cores

A braided shielding layer is arranged outside the cable core;

an inner sheath is extruded outside the braided shielding layer;

an armor layer is arranged outside the inner sheath;

an outer sheath is arranged outside the armor layer.

Preferably, the main line core conductor and the ground line core conductor are tin-plated copper conductors.

Preferably, the main line core insulating layer and the ground wire core insulating layer are of double-layer insulating structures, the inner layer is an ethylene propylene rubber insulating layer, and the outer layer is a rubber compound insulating layer.

Preferably, the wrapping belt is of a double-layer structure, the inner layer is a flame-retardant glass fiber wrapping belt, and the outer layer is a flame-retardant polyester film.

Preferably, the braided shielding layer is a tinned copper wire braided shielding layer, and the braiding density is more than 90%.

Preferably, the inner sheath is an abrasion-resistant polyurethane inner sheath.

Preferably, the armor layer is a galvanized steel wire armor layer.

Preferably, the outer sheath is an abrasion-resistant polyurethane outer sheath.

The beneficial effects of the utility model are as follows: the common power cable is formed by cabling three insulated wire cores and then shielding, and the cable is formed by extruding an insulating sheath in a split-phase mode and then symmetrically cabling, and the symmetrical cable structure has better electromagnetic compatibility due to the interchangeability of wires, so that the anti-interference performance of the special cable for the variable frequency motor is improved. Compared with the common variable frequency cable, the electromagnetic compatibility and the tolerance temperature are improved, the variable frequency cable has good protection effect on variable frequency electric appliances, and simultaneously has the advantages of low radiation, low toxicity, environmental protection, flame retardance and wear resistance.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

In the figure, 1 is a main line core conductor, 2 is a main line core insulating layer, 3 is a main line core sheath, 4 is flame retardant filling, 5 is wrapping tape, 6 is a braided shielding layer, 7 is an inner sheath, 8 is an armor layer, 9 is an outer sheath, 10 is a ground line core conductor, 11 is a ground line core insulating layer, and 12 is a ground line core sheath.

Detailed Description

The novel electromagnetic interference resistant, abrasion resistant, rat and termite resistant, environment-friendly and variable-frequency power cable comprises three main insulation wire cores and three ground insulation wire cores;

the three main insulation wire cores are uniformly arranged in the center of the power cable, the main insulation wire core comprises a main wire core conductor 1, a main wire core insulation layer 2 and a main wire core sheath 3, the main wire core insulation layer 2 is arranged outside the main wire core conductor 1, and the main wire core sheath 3 is arranged outside the main wire core insulation layer 2;

the three ground insulation wire cores are respectively and uniformly arranged among the three main insulation wire cores, the ground insulation wire core comprises a ground wire core conductor 10, a ground wire core insulation layer 11 and a ground wire core sheath 12, the ground wire core insulation layer 11 is arranged outside the ground wire core conductor 10, and the ground wire core sheath 12 is arranged outside the ground wire core insulation layer 11;

flame retardant filling 4 is arranged between the three main insulating wire cores and the three ground insulating wire cores;

the three main insulation wire cores and the three ground insulation wire cores are externally provided with a wrapping belt 5 cabling core

The cable core is externally provided with a braided shielding layer 6;

the braided shielding layer 6 is externally extruded with an inner sheath 7;

an armor layer 8 is arranged outside the inner sheath 7;

an outer sheath 9 is arranged outside the armor layer 8.

The main line core conductor 1 and the ground line core conductor 10 are tin-plated copper conductors.

The main line core insulating layer 2 and the ground wire core insulating layer 11 are of double-layer insulating structures, the inner layer is an ethylene propylene rubber insulating layer, and the outer layer is extruded by double layers of rubber compound (rubber) for the low-smoke halogen-free flame-retardant cable.

The wrapping belt 5 is of a double-layer structure, the inner layer is a flame-retardant glass fiber wrapping belt, the outer layer is a flame-retardant polyester film, and the flame-retardant effect of the cable core is enhanced.

The braided shielding layer 6 is a tinned copper wire braided shielding layer, and the braiding density is more than 90 percent, so that the electromagnetic wave interference resistance in use is enhanced, and the use stability of the cable is ensured.

The inner sheath 7 is an abrasion-resistant polyurethane inner sheath.

The armor 8 is a galvanized steel wire armor, so that the cable is prevented from being bitten by mice, and the anti-interference performance is enhanced.

The outer sheath 9 is an abrasion-resistant polyurethane outer sheath, so that the overall safety and reliability of the cable are improved.

The cable is a split-phase extruded insulating sheath, and then is symmetrically formed, and the symmetrical cable structure has better electromagnetic compatibility due to the interchangeability of wires, improves the anti-interference performance of the special cable for the variable frequency motor, improves the electromagnetic compatibility and the tolerance temperature, has good protection effect on the variable frequency electric appliance, and has the advantages of low radiation, low toxicity, environmental protection, flame retardance and wear resistance.

The utility model has the performances of electromagnetic wave interference resistance, wear resistance, rat and termite resistance, high temperature resistance, long service life and the like, and is widely applied to industries of petroleum, metallurgy, power generation, railways and the like.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, and is merely for convenience in describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and defined otherwise, for example, it may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

Standard parts used by the utility model can be purchased from the market, and special-shaped parts can be customized according to the description of the specification and the drawings.

Although embodiments of the present utility model 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 therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Novel anti-electromagnetic interference wear-resistant, rat-proof and termite-proof high-temperature-resistant environment-friendly variable-frequency power cable is characterized in that: the power cable comprises three main insulation wire cores and three ground insulation wire cores;

the three main insulation wire cores are uniformly arranged in the center of the power cable, the main insulation wire core comprises a main wire core conductor (1), a main wire core insulation layer (2) and a main wire core sheath (3), the main wire core insulation layer (2) is arranged outside the main wire core conductor (1), and the main wire core sheath (3) is arranged outside the main wire core insulation layer (2);

the three ground insulation wire cores are uniformly arranged among the three main insulation wire cores respectively, each ground insulation wire core comprises a ground wire core conductor (10), a ground wire core insulation layer (11) and a ground wire core sheath (12), the ground wire core insulation layer (11) is arranged outside the ground wire core conductor (10), and the ground wire core sheath (12) is arranged outside the ground wire core insulation layer (11);

flame retardant filling (4) is arranged between the three main insulating wire cores and the three ground insulating wire cores;

the three main insulation wire cores and the three ground insulation wire cores are externally provided with a wrapping belt (5) to form a cable core

A braided shielding layer (6) is arranged outside the cable core;

the braiding shielding layer (6) is externally extruded with an inner sheath (7);

an armor layer (8) is arranged outside the inner sheath (7);

an outer sheath (9) is arranged outside the armor layer (8).

2. The novel electromagnetic interference resistant, wear resistant, rat and termite resistant, environment-friendly variable frequency voltage cable according to claim 1, wherein: the main line core conductor (1) and the ground wire core conductor (10) are tin-plated copper conductors.

3. The novel electromagnetic interference resistant, wear resistant, rat and termite resistant, environment-friendly variable frequency voltage cable according to claim 1, wherein: the main line core insulating layer (2) and the ground wire core insulating layer (11) are of double-layer insulating structures, the inner layer is an ethylene propylene rubber insulating layer, and the outer layer is a rubber compound insulating layer.

4. The novel electromagnetic interference resistant, wear resistant, rat and termite resistant, environment-friendly variable frequency voltage cable according to claim 1, wherein: the wrapping belt (5) is of a double-layer structure, the inner layer is a flame-retardant glass fiber wrapping belt, and the outer layer is a flame-retardant polyester film.

5. The novel electromagnetic interference resistant, wear resistant, rat and termite resistant, environment-friendly variable frequency voltage cable according to claim 1, wherein: the braided shielding layer (6) is a tinned copper wire braided shielding layer, and the braiding density is more than 90%.

6. The novel electromagnetic interference resistant, wear resistant, rat and termite resistant, environment-friendly variable frequency voltage cable according to claim 1, wherein: the inner sheath (7) is an abrasion-resistant polyurethane inner sheath.

7. The novel electromagnetic interference resistant, wear resistant, rat and termite resistant, environment-friendly variable frequency voltage cable according to claim 1, wherein: the armor layer (8) is a galvanized steel wire armor layer.

8. The novel electromagnetic interference resistant, wear resistant, rat and termite resistant, environment-friendly variable frequency voltage cable according to claim 1, wherein: the outer sheath (9) is an abrasion-resistant polyurethane outer sheath.