CN214012587U - Environment-friendly low-smoke halogen-free flame-retardant heat-resistant flexible cable - Google Patents

Abstract

The utility model belongs to the technical field of electric wires and cables, in particular to an environment-friendly low-smoke halogen-free flame-retardant heat-resistant flexible cable which comprises a halogen-free cross-linked sheath, a plurality of halogen-free cross-linked insulation sleeves arranged in the halogen-free cross-linked sheath and a plurality of cable cores arranged in the halogen-free cross-linked insulation sleeves; a second flame-retardant layer is arranged in the halogen-free cross-linked sheath; and a flame-retardant copper layer is arranged in the second flame-retardant layer, and a heat-insulating layer is arranged on the inner side of the flame-retardant copper layer. And a heat insulation filling nub is arranged between the halogen-free crosslinking sheath and the halogen-free crosslinking insulating sleeve. The environment-friendly low-smoke halogen-free flame-retardant heat-resistant flexible cable has the effects of reducing combustion and improving flame retardance.

Description

Environment-friendly low-smoke halogen-free flame-retardant heat-resistant flexible cable

Technical Field

The utility model belongs to the technical field of wire and cable, concretely relates to fire-retardant heat-resisting flexible cable of environment-friendly low smoke and zero halogen.

Background

The electric wire refers to a wire for transmitting electric energy. The bare wires have no insulating layer and comprise copper, aluminum flat wires, overhead stranded wires and various profiles (such as molded lines, buses, copper bars, aluminum bars and the like). It is mainly used for outdoor overhead and indoor bus bars and switch boxes. It is mainly used for motor and transformer coils and other relevant electromagnetic equipment. The conductor is mainly a copper wire, and has a thin insulating layer, good electrical and mechanical properties, heat resistance, moisture resistance, solvent resistance and the like.

In the prior art, the insulating material of the electric wire and the electric cable is mainly polyvinyl chloride, but the polyvinyl chloride contains halogen, so that toxic smoke is released when the electric wire and the electric cable are burnt in an accident, the environment is seriously polluted, and fire fighting of fire fighters and timely and effective personnel evacuation are hindered.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a fire-retardant heat-resisting flexible cable of environment-friendly low smoke and zero halogen to can release the technical problem of poisonous smog when solving the burning, reach and to reduce pollution, promote the purpose of cable environmental protection performance.

In order to solve the technical problem, the utility model provides an environment-friendly low smoke and zero halogen flame-retardant heat-resisting flexible cable, include: the cable comprises a halogen-free crosslinking sheath, a halogen-free crosslinking insulating sleeve arranged in the halogen-free crosslinking sheath and a plurality of cable cores arranged in the halogen-free crosslinking insulating sleeve;

a second flame-retardant layer is arranged in the halogen-free cross-linked sheath;

and a flame-retardant copper layer is arranged in the second flame-retardant layer, and a heat-insulating layer is arranged on the inner side of the flame-retardant copper layer.

Furthermore, a heat insulation filling fine block is arranged between the halogen-free cross-linked sheath and the halogen-free cross-linked insulating sleeve.

Further, the insulating layer is provided with the inner liner on one side inwards, the inner liner is provided with the tiny body that colludes of a plurality of on one side inwards, the tiny body that colludes catches on the fire-retardant layer of second.

Further, the thickness of the halogen-free cross-linked sheath is 5-8 mm.

Further, the thickness of the flame-retardant copper layer is 1-2 mm.

Further, a flame-retardant fine powder layer is filled in the halogen-free cross-linked insulating sleeve.

Furthermore, the thickness of the halogen-free cross-linked insulating sleeve is 2-3 mm.

The utility model has the advantages that the release of toxic smog is reduced by the material of the halogen-free cross-linking sheath and the halogen-free cross-linking insulating sleeve; through the second flame-retardant layer arranged in the halogen-free cross-linked sheath, the flame-retardant and isolated effect on the outer fire source is achieved when the external cable is burnt, and the purpose that the burning cannot enter the inside of the cable is achieved. And the flame-retardant copper layer plays a role of flame retardancy again.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

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

FIG. 1 is a schematic structural view of an environment-friendly low-smoke halogen-free flame-retardant heat-resistant flexible cable of the present invention;

fig. 2 is a schematic diagram of the structure at a in fig. 1.

In the figure:

1. a halogen-free cross-linked sheath; 11. a second flame retardant layer; 111. a flame retardant copper layer; 12. a thermal insulation layer; 2. a halogen-free cross-linked insulating sleeve; 21. a flame-retardant fine powder layer; 3. a cable core; 4. insulating the filling nubs; 5. an inner liner layer; 51. a fine hook body.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b):

as shown in fig. 1, an environment-friendly low-smoke halogen-free flame-retardant heat-resistant flexible cable comprises: the cable comprises a halogen-free cross-linked sheath 1, a halogen-free cross-linked insulating sleeve 2 arranged in the halogen-free cross-linked sheath 1 and a plurality of cable cores 3 arranged in the halogen-free cross-linked insulating sleeve 2, wherein in the embodiment, the thickness of the halogen-free cross-linked sheath 1 is 5-8 mm, and the thickness of the halogen-free cross-linked insulating sleeve 2 is 2-3 mm. The purpose of reducing the release of toxic smog is achieved by the materials of the halogen-free cross-linked sheath 1 and the halogen-free cross-linked insulating sleeve 2.

Wherein, a heat insulation filling fine block 4 is arranged between the halogen-free cross-linked sheath 1 and the halogen-free cross-linked insulating sleeve 2, which can play a heat insulation role.

As shown in fig. 1 and fig. 2, in order to further improve the low smoke and flame retardant performance of the electric wire and cable, a second flame retardant layer 11 is disposed in the halogen-free cross-linked sheath 1, and a flame retardant copper layer 111 is disposed in the second flame retardant layer 11, the thickness of the flame retardant copper layer 111 is 1-2 mm, the second flame retardant layer 11 can perform a secondary flame retardant function, and the flame retardant copper layer 111 performs a purpose of three flame retardant functions. In the present embodiment, when the exterior is burned, high temperature is transferred into the cable core 3 to cause damage to the cable core 3, so the heat insulating layer 12 is provided inside the flame retardant copper layer 111.

As shown in fig. 2, the inner liner 5 is disposed on the inward side of the heat insulation layer 12, a plurality of fine hooks 51 are disposed on the inward side of the inner liner 5, the fine hooks 51 hook the second flame retardant layer 11, and the second flame retardant layer 11 is fixed on the heat insulation layer 12.

As shown in fig. 1, the halogen-free crosslinked insulating sheath 2 is filled with a flame-retardant fine powder layer 21, so as to improve the flame-retardant performance inside the electric wire and cable.

In conclusion, the release of toxic smoke is promoted and reduced by the materials of the halogen-free cross-linked sheath 1 and the halogen-free cross-linked insulating sleeve 2; through the second flame-retardant layer 11 arranged in the halogen-free cross-linked sheath 1, when an external cable is burnt, the flame-retardant and isolated effect on an external fire source is achieved, and the purpose that the burning cannot enter the inside of the cable is achieved. And functions to be again flame retardant by the flame retardant copper layer 111. The damage of the cable caused by external fire sources is reduced by the flame-retardant fine powder layer 21 inside.

All the components selected in the application are general standard components or components known by those skilled in the art, and the structure and the principle of the components can be known by technical manuals or by routine experiments.

In the description of the embodiments of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (7)

1. The utility model provides an environment-friendly low smoke and zero halogen flame retardant heat-resisting flexible cable which characterized in that includes:

the cable comprises a halogen-free crosslinking sheath (1), a halogen-free crosslinking insulating sleeve (2) arranged in the halogen-free crosslinking sheath (1) and a plurality of cable cores (3) arranged in the halogen-free crosslinking insulating sleeve (2);

a second flame-retardant layer (11) is arranged in the halogen-free cross-linked sheath (1);

and a flame-retardant copper layer (111) is arranged in the second flame-retardant layer (11), and a heat insulation layer (12) is arranged on the inner side of the flame-retardant copper layer (111).

2. The environment-friendly low-smoke halogen-free flame-retardant heat-resistant flexible cable as claimed in claim 1,

and a heat-insulating filling fine block (4) is arranged between the halogen-free cross-linked sheath (1) and the halogen-free cross-linked insulating sleeve (2).

3. The environment-friendly low-smoke halogen-free flame-retardant heat-resistant flexible cable as claimed in claim 2,

insulating layer (12) one side is provided with inner liner (5) inwards, inner liner (5) one side is provided with the tiny body (51) of colluding of a plurality of inwards, the tiny body (51) of colluding catches on fire-retardant layer (11) of second.

4. The environment-friendly low-smoke halogen-free flame-retardant heat-resistant flexible cable as claimed in claim 3,

the thickness of the halogen-free cross-linked sheath (1) is 5-8 mm.

5. The environment-friendly low-smoke halogen-free flame-retardant heat-resistant flexible cable as claimed in claim 4,

the thickness of the flame-retardant copper layer (111) is 1-2 mm.

6. The environment-friendly low-smoke halogen-free flame-retardant heat-resistant flexible cable as claimed in claim 5,

and the halogen-free cross-linked insulating sleeve (2) is filled with a flame-retardant fine powder layer (21).

7. The environment-friendly low-smoke halogen-free flame-retardant heat-resistant flexible cable as claimed in claim 6,

the thickness of the halogen-free cross-linked insulating sleeve (2) is 2-3 mm.

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