CN215770650U

CN215770650U - Environment-friendly high-flame-retardant fire-resistant special power cable

Info

Publication number: CN215770650U
Application number: CN202121912086.7U
Authority: CN
Inventors: 孙振; 张成和; 张成兵; 曾玉松; 曾玉山
Original assignee: YANGZHOU ZHONGNENG CABLE CO Ltd
Current assignee: YANGZHOU ZHONGNENG CABLE CO Ltd
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2022-02-08
Anticipated expiration: 2031-08-16

Abstract

The utility model discloses an environment-friendly high flame-retardant fire-resistant special power cable in the technical field of power cables, which comprises four groups of cable cores with the same structure, wherein the outer walls of the four groups of cable cores are connected with a flame-retardant filling layer, the outer wall of the flame-retardant filling layer is wrapped with a flame-retardant layer, the outer wall of the flame-retardant layer is wrapped with an outer insulating layer, the outer wall of the outer insulating layer is wrapped with an outer shielding layer, the outer wall of the outer shielding layer is wrapped with an inner protective layer, the outer wall of the inner protective layer is wrapped with an outer flame-retardant layer, the cable core is provided with a heat-insulating layer, so that the cable can be decomposed and absorb heat at high temperature, the temperature of the cable is further reduced, the fire resistance grade of the cable is improved, the cable core can be positioned by arranging a lug on the heat-insulating layer, the fire resistance of the cable can be further improved by arranging the flame-retardant filling layer made of low-smoke halogen-free cross-linked polyolefin, the flame retardant material has the advantages of flame retardance and environmental pollution avoidance.

Description

Environment-friendly high-flame-retardant fire-resistant special power cable

Technical Field

The utility model relates to the technical field of power cables, in particular to an environment-friendly high-flame-retardant fire-resistant special power cable.

Background

The cable is an electric energy or signal transmission device, usually comprises several or several groups of wires, and the flame retardant effect of present power cable is not good, and fire-retardant layer on the cable can produce dense smoke when meeting the conflagration, and environmental protection effect is relatively poor, and be unfavorable for personnel's evacuation, for this reason, we propose a fire-resistant special power cable of high fire-retardant of environment-friendly.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an environment-friendly high-flame-retardant fire-resistant special power cable to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a high fire-retardant fire-resistant special power cable of environment-friendly, includes four cable cores that the structure is the same, four groups the outer wall of cable core all is connected with fire-retardant filling layer, the outer wall cladding of fire-retardant filling layer has the flame retardant coating, the outer wall cladding of flame retardant coating has the outer insulating layer, the outer wall cladding of outer insulating layer has the outer shielding layer, the outer wall cladding of outer shielding layer has the inner protective layer, the outer wall cladding of inner protective layer has outer fire-retardant layer, the outer wall cladding of outer fire-retardant layer has the outer protective layer.

Preferably, the cable core comprises a conductor, the outer wall of the conductor is coated with an insulating layer, the outer wall of the insulating layer is coated with an inner shielding layer, and the outer wall of the inner shielding layer is coated with a heat insulation layer.

Preferably, the outer wall of the heat insulation layer is connected with the flame-retardant filling layer, and the outer wall of the heat insulation layer is integrally formed with a convex block.

Preferably, four groups of lugs are arranged, and the four groups of lugs are uniformly connected to the heat insulation layer in the circumferential direction.

Preferably, the outer protection layer comprises an armor layer, and the outer wall of the armor layer is wrapped with a sheath layer.

Preferably, the armor layer is coated on the outer wall of the outer flame-retardant layer, and the thickness of the sheath layer is one millimeter.

Compared with the prior art, the utility model has the beneficial effects that: the utility model discloses a set up the insulating layer on the cable core, make can decompose the heat absorption under high temperature, and then reduce the temperature of cable, improve cable fire resistance level, through set up the lug on the insulating layer, can play the effect of location to the cable core, through setting up the flame retardant coating, can further improve the refractiveness of cable, through setting up the fire-retardant filling layer that low smoke and zero halogen crosslinked polyolefin made, when playing fire-retardant, avoid causing environmental pollution, through adopting the interior protective layer that multilayer environment-friendly low smoke and zero halogen fire-retardant band overlapping winding formed, when the conflagration takes place, can prevent oxygen entering cable core inside through the interior protective layer, improve flame retardant efficiency, through adopting outer flame retardant layer and the restrictive coating that 105 ℃ of environment-friendly low smoke and zero halogen fire-retardant polyolefin material made, can further improve the flame retardant efficiency of cable.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of a cable core structure according to the present invention;

figure 3 is a schematic diagram of the cable core structure of the present invention.

In the figure: 1. a cable core; 11. a conductor; 12. an insulating layer; 13. an inner shield layer; 14. a thermal insulation layer; 2. a flame retardant filler layer; 3. a refractory layer; 4. an outer insulating layer; 5. an outer shield layer; 6. an inner protective layer; 7. an outer flame retardant layer; 8. an outer protective layer; 81. an armor layer; 82. a sheath layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

An environment-friendly high flame-retardant fire-resistant special power cable, please refer to fig. 1 to 3, comprising four groups of cable cores 1 with the same structure, the outer walls of the four groups of cable cores 1 are all connected with a flame-retardant filling layer 2, the flame-retardant filling layer 2 is made of low-smoke halogen-free cross-linked polyolefin, so as to prevent environmental pollution while playing a flame-retardant role, the outer wall of the flame-retardant filling layer 2 is coated with a flame-retardant layer 3, the flame-retardant layer 3 is made of ceramic silicon rubber material, so as to achieve low-smoke halogen-free environmental protection and improve the fire resistance of the cable, the outer wall of the flame-retardant layer 3 is coated with an outer insulating layer 4, the outer insulating layer 4 is made of polyvinyl chloride material, the outer wall of the outer insulating layer 4 is coated with an outer shielding layer 5, the outer shielding layer 5 is made of aluminum foil, the outer wall of the outer shielding layer 5 is coated with an inner protective layer 6, the inner protective layer 6 is made of multilayer low-smoke halogen-free flame-retardant tape overlapping and winding, can prevent oxygen entering cable core 1 through interior protective layer 6 inside, improve flame retardant efficiency, the outer wall cladding of interior protective layer 6 has outer flame retardant coating 7, and outer flame retardant coating 7 is through adopting the outer flame retardant coating that 105 ℃ of environment-friendly low smoke and zero halogen flame retardant polyolefin material made, can further improve the flame retardant efficiency of cable, and the outer wall cladding of outer flame retardant coating 7 has outer protective layer 8.

Referring to fig. 1 to 3, the cable core 1 includes a conductor 11, an outer wall of the conductor 11 is coated with an insulating layer 12, the insulating layer 12 is insulated by a cross-linked polyethylene material, an outer wall of the insulating layer 12 is coated with an inner shielding layer 13, the inner shielding layer 13 is woven by a copper mesh, an outer wall of the inner shielding layer 13 is coated with a thermal insulation layer 14, the thermal insulation layer 14 is made of a ceramic fireproof and fire-resistant composite tape, and the material is decomposed and absorbs heat at a high temperature, so as to reduce the temperature of the cable and improve the fire-resistant grade.

Referring to fig. 1 to 3, the outer wall of the thermal insulation layer 14 is connected to the flame retardant filling layer 2, and a bump is integrally formed on the outer wall of the thermal insulation layer 14 to position the cable core 1.

Referring to fig. 1 to 3, four sets of protrusions are provided, and the four sets of protrusions are circumferentially and uniformly connected to the heat insulation layer 14.

Referring to fig. 1, the outer protection layer 8 includes an armor layer 81, the armor layer 81 is made of a steel tape, the outer wall of the armor layer 81 is coated with a sheathing layer 82, the sheathing layer 82 is made of 105 ℃ environment-friendly low-smoke halogen-free flame retardant polyolefin material, the flame retardant effect of the cable can be further improved, the armor layer 81 is coated on the outer wall of the outer flame retardant layer 7, and the thickness of the sheathing layer 82 is one millimeter.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments 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. The utility model provides a fire-resistant special power cable of high fire-retardant fire-resistant of environment-friendly, includes four cable cores (1) that the structure is the same, its characterized in that: the outer wall of four cable cores (1) all is connected with fire-retardant filling layer (2), the outer wall cladding of fire-retardant filling layer (2) has flame retardant coating (3), the outer wall cladding of flame retardant coating (3) has outer insulating layer (4), the outer wall cladding of outer insulating layer (4) has outer shielding layer (5), the outer wall cladding of outer shielding layer (5) has inner protective layer (6), the outer wall cladding of inner protective layer (6) has outer fire-retardant layer (7), the outer wall cladding of outer fire-retardant layer (7) has outer protective layer (8).

2. The environment-friendly high-flame-retardant fire-resistant special power cable according to claim 1, characterized in that: the cable core (1) comprises a conductor (11), the outer wall of the conductor (11) is coated with an insulating layer (12), the outer wall of the insulating layer (12) is coated with an inner shielding layer (13), and the outer wall of the inner shielding layer (13) is coated with a heat insulating layer (14).

3. The environment-friendly high-flame-retardant fire-resistant special power cable according to claim 2, characterized in that: the outer wall of the heat insulation layer (14) is connected with the flame-retardant filling layer (2), and the outer wall of the heat insulation layer (14) is integrally formed with a convex block.

4. The environment-friendly high-flame-retardant fire-resistant special power cable according to claim 3, characterized in that: the lug is provided with four groups, and four groups of lugs are evenly connected on the heat insulation layer (14) in the circumferential direction.

5. The environment-friendly high-flame-retardant fire-resistant special power cable according to claim 1, characterized in that: the outer protection layer (8) comprises an armor layer (81), and the outer wall of the armor layer (81) is coated with a sheath layer (82).

6. The environment-friendly high-flame-retardant fire-resistant special power cable according to claim 5, characterized in that: the armor layer (81) is coated on the outer wall of the outer flame-retardant layer (7), and the thickness of the sheath layer (82) is one millimeter.