CN212724803U

CN212724803U - Wire and cable with good flame retardant effect

Info

Publication number: CN212724803U
Application number: CN202021498326.9U
Authority: CN
Inventors: 曾文群
Original assignee: ZHEJIANG KANGWEISHENG HIGH TEMPERATURE CABLE CO Ltd
Current assignee: ZHEJIANG KANGWEISHENG HIGH TEMPERATURE CABLE CO Ltd
Priority date: 2020-07-25
Filing date: 2020-07-25
Publication date: 2021-03-16
Anticipated expiration: 2030-07-25

Abstract

The utility model discloses a wire and cable that flame retardant efficiency is good, including fire-retardant protective layer, waterproof layer, corrosion resistant layer, first cable core, second cable core, filling layer, insulating protective layer, shielding layer, sheath and fire-retardant band. The insulating wrapping tape primarily protects the exterior of the cable in a flame-retardant manner, the flame-retardant protective layer and the sheath respectively retard the surface layer and the interior of the cable in a flame-retardant manner, multiple flame-retardant protection is realized, the overall flame-retardant effect of the cable is improved, and the corrosion-resistant layer and the waterproof layer can improve the functionality of the cable; when using, filling layer and insulating protective layer are comparatively comprehensive to first cable core and second cable core parcel, and insulating effectual reduction electric leakage phenomenon's production, the shielding layer setting is inside the cable, reduces external environment and to the inside electromagnetic interference of cable, and the protecting effect is better.

Description

Wire and cable with good flame retardant effect

Technical Field

The utility model relates to a wire and cable structure specifically is a wire and cable that flame retardant efficiency is good, belongs to cable device application technical field.

Background

The wire and cable is used for transmitting electric (magnetic) energy, information and wire products for realizing electromagnetic energy conversion. A wire cable in a broad sense, also referred to as a cable for short, refers to an insulated cable, which can be defined as: an aggregate consisting of; one or more insulated wire cores, and their respective possible coatings, total protective layers and outer jackets, the cable may also have additional conductors without insulation.

General flame retarded cable sets up fire-retardant sheath externally, and is fire-retardant to the cable outside, and the cable is inside to lack thermal-insulated fire-retardant structure, can't realize the multiple protection of cable, and flame retardant efficiency is limited, and the parcel of the inside cable core of cable and protection do not fully influence insulating effect, and the cable also receives outside electromagnetic interference easily, influences the use. Therefore, the electric wire and the electric cable with good flame retardant effect are provided aiming at the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electric wire and cable that flame retardant efficiency is good for solving above-mentioned problem.

The utility model realizes the purpose by the following technical proposal, a wire and cable with good flame retardant effect, which comprises a flame retardant protective layer, a filling layer and a shielding layer, wherein the flame retardant protective layer is internally sleeved with a corrosion resistant layer and a sheath, and the sheath is internally sleeved with the shielding layer; the shielding layer is internally sleeved with an insulating protective layer and a filling layer, and the filling layer is internally sleeved with a first cable core and a second cable core.

Preferably, four second cable cores are sleeved outside the first cable core, the diameter of each second cable core is larger than that of the first cable core, the filling layer is made of PP rope fibers, and mica fibers are embedded inside the filling layer.

Preferably, the outside of the filling layer is sleeved with an insulating protective layer, the thickness of the insulating protective layer is smaller than that of the shielding layer, and the shielding layer is made of copper clad steel wires in a net shape and sleeved outside the insulating protective layer.

Preferably, the sheath is bonded between the corrosion-resistant layer and the shielding layer, aluminum hydroxide coatings are arranged on two sides of the sheath, and the thickness of the sheath is twice that of the corrosion-resistant layer.

Preferably, a polytetrafluoroethylene film is bonded to the surface of the corrosion-resistant layer, the thickness of the corrosion-resistant layer is smaller than that of the flame-retardant protective layer, the flame-retardant protective layer is made of cross-linked polyethylene, and waterproof layers are bonded to two sides of the flame-retardant protective layer.

Preferably, a flame-retardant wrapping tape is wound outside the flame-retardant protective layer, a flame-retardant coating is arranged on the surface of the flame-retardant wrapping tape, and aluminum hydroxide and magnesium hydroxide in equal proportion are contained in the flame-retardant coating.

The utility model has the advantages that:

1. the insulating wrapping tape primarily protects the exterior of the cable in a flame-retardant manner, the flame-retardant protective layer and the sheath respectively retard the surface layer and the interior of the cable in a flame-retardant manner, multiple flame-retardant protection is realized, the overall flame-retardant effect of the cable is improved, and the corrosion-resistant layer and the waterproof layer can improve the functionality of the cable;

2. when using, filling layer and insulating protective layer are comparatively comprehensive to first cable core and second cable core parcel, and insulating effectual reduction electric leakage phenomenon's production, the shielding layer setting is inside the cable, reduces external environment and to the inside electromagnetic interference of cable, and the protecting effect is better.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

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

FIG. 2 is a schematic structural view of the flame retardant protective layer of the present invention;

fig. 3 is a schematic view of the structure of the flame-retardant belting of the present invention.

In the figure: 1. the cable comprises a flame-retardant protective layer, 101, a waterproof layer, 2, a corrosion-resistant layer, 3, a first cable core, 4, a second cable core, 5, a filling layer, 6, an insulating protective layer, 7, a shielding layer, 8, a sheath, 9 and a flame-retardant wrapping tape.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1-3, an electric wire and cable with good flame retardant effect includes a flame retardant protective layer 1, a filling layer 5 and a shielding layer 7, wherein a corrosion resistant layer 2 and a sheath 8 are sleeved inside the flame retardant protective layer 1, and the shielding layer 7 is sleeved inside the sheath 8; an insulating protective layer 6 and a filling layer 5 are sleeved inside the shielding layer 7, and a first cable core 3 and a second cable core 4 are sleeved in the filling layer 5.

Four second cable cores 4 are sleeved outside the first cable core 3, the diameter of each second cable core 4 is larger than that of the first cable core 3, the filling layer 5 is made of PP rope fibers, and mica fibers are embedded in the filling layer 5, so that gaps between the first cable core 3 and the second cable cores 4 can be filled conveniently; an insulating protective layer 6 is sleeved outside the filling layer 5, the thickness of the insulating protective layer 6 is smaller than that of the shielding layer 7, and the shielding layer 7 is made of copper clad steel wires and sleeved outside the insulating protective layer 6 in a net shape, so that the anti-electromagnetic interference performance of the cable is improved; the sheath 8 is bonded between the corrosion-resistant layer 2 and the shielding layer 7, aluminum hydroxide coatings are arranged on two sides of the sheath 8, the thickness of the sheath 8 is twice that of the corrosion-resistant layer 2, and the sheath 8 is convenient for flame-retardant protection of the interior of the cable; a polytetrafluoroethylene film is bonded on the surface of the corrosion-resistant layer 2, the thickness of the corrosion-resistant layer 2 is smaller than that of the flame-retardant protective layer 1, the flame-retardant protective layer 1 is made of cross-linked polyethylene, and waterproof layers 101 are bonded on two sides of the flame-retardant protective layer 1, so that the waterproof protection outside the cable is facilitated; the flame-retardant cable is characterized in that a flame-retardant wrapping tape 9 is wound and connected to the outer portion of the flame-retardant protective layer 1, a flame-retardant coating is arranged on the surface of the flame-retardant wrapping tape 9, and aluminum hydroxide and magnesium hydroxide in equal proportion are contained in the flame-retardant coating, so that the flame-retardant wrapping tape 9 can conveniently retard the flame of the outer portion of the cable.

When the utility model is used, the flame-retardant wrapping tape 9 contains aluminum hydroxide and magnesium hydroxide with equal proportion, has better flame-retardant and oxygen-isolating effects, the flame-retardant protection can be carried out on the wrapped cable, the flame-retardant effect of the cable can be further improved by the crosslinked polyethylene in the flame-retardant protective layer 1 and the aluminum hydroxide on the sheath 8, the waterproof layer 101 is a waterproof, moistureproof and breathable film made of expanded polytetrafluoroethylene, the water inlet performance of the crosslinked polyethylene can be improved, the damage of water inlet inside the cable is avoided, the corrosion and damage of a cable protection layer can be reduced by the corrosion-resistant layer 2, the first cable core 3 and the second cable core 4 are wrapped by the shielding layer 7, the electromagnetic interference outside the cable is reduced, the filling layer 5 with the mica fibers and the insulation protection layer 6 made of rubber materials can perform insulation protection on the structure inside the shielding layer 7, the electric leakage phenomenon of the cable is reduced, and the service performance of the cable is better.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a wire and cable that flame retardant efficiency is good which characterized in that: the flame-retardant cable sheath comprises a flame-retardant protective layer (1), a filling layer (5) and a shielding layer (7), wherein a corrosion-resistant layer (2) and a sheath (8) are sleeved inside the flame-retardant protective layer (1), and the shielding layer (7) is sleeved inside the sheath (8); an insulating protective layer (6) and a filling layer (5) are sleeved inside the shielding layer (7), and a first cable core (3) and a second cable core (4) are sleeved in the filling layer (5).

2. The electric wire and cable with good flame retardant effect as claimed in claim 1, wherein: four second cable cores (4) are sleeved outside the first cable core (3), the diameter of each second cable core (4) is larger than that of the first cable core (3), the filling layer (5) is made of PP rope fibers, and mica fibers are embedded inside the filling layer (5).

3. The electric wire and cable with good flame retardant effect as claimed in claim 1, wherein: an insulating protective layer (6) is sleeved outside the filling layer (5), the thickness of the insulating protective layer (6) is smaller than that of the shielding layer (7), and the shielding layer (7) is made of copper-clad steel wires in a net shape and sleeved outside the insulating protective layer (6).

4. The electric wire and cable with good flame retardant effect as claimed in claim 1, wherein: the protective sleeve (8) is bonded between the corrosion-resistant layer (2) and the shielding layer (7), aluminum hydroxide coatings are arranged on two sides of the protective sleeve (8), and the thickness of the protective sleeve (8) is twice of that of the corrosion-resistant layer (2).

5. The electric wire and cable with good flame retardant effect as claimed in claim 1, wherein: the surface of the corrosion-resistant layer (2) is adhered with a polytetrafluoroethylene film, the thickness of the corrosion-resistant layer (2) is smaller than that of the flame-retardant protective layer (1), the flame-retardant protective layer (1) is made of cross-linked polyethylene, and waterproof layers (101) are adhered to two sides of the flame-retardant protective layer (1).

6. The electric wire and cable with good flame retardant effect as claimed in claim 1, wherein: the fire-retardant protective layer (1) is externally wound with a fire-retardant wrapping tape (9), the surface of the fire-retardant wrapping tape (9) is provided with a fire-retardant coating, and the fire-retardant coating contains aluminum hydroxide and magnesium hydroxide in equal proportion.