CN216623858U - High flame-retardant insulated wire - Google Patents

Abstract

The utility model relates to a high-flame-retardant insulated wire which comprises a plurality of wire cable cores, a partition board, an inner protective layer and an outer protective sleeve layer positioned on the outermost side, wherein the wire cable cores and the partition board are positioned in the inner protective layer, the partition board separates the wire cable cores, the outer surface of the outer protective sleeve layer is coated with fireproof coating, a plurality of air bag balls are circumferentially arranged in the outer protective sleeve layer along the circumference, and flame-retardant particle powder is filled in the air bag balls. The flame-retardant characteristic of the outer sheath layer is improved through the flame-retardant coating of the outer sheath layer and the action of the flame-retardant particle powder in the balloon of the air bag, so that the outer sheath layer is not easily damaged when encountering external flame.

Description

High flame retardant insulated wire

Technical Field

The utility model relates to the field of electric wire tubes, in particular to a high-flame-retardant insulated electric wire.

Background

Wire and cable are wire products used for transmitting electric energy, information and realizing electromagnetic energy conversion. The application of the wire and cable in various industry fields of the current society is more and more, the demand is more and more diversified, especially the requirements of the wire and cable in some important engineering facilities, precision equipment and large-scale machinery on the insulation shielding performance and the flame retardant performance are higher and higher, and the development of the high flame retardant insulated wire and cable in the fields becomes an important trend.

The waterproof flame-retardant cable comprises an outer protective layer, wherein a clay layer is fixedly connected to the inner surface of the outer protective layer, an armor layer is fixedly connected to the inner surface of the clay layer, an inner protective layer is fixedly connected to the inner surface of the armor layer, and a supporting plate is fixedly connected to the inner surface of the inner protective layer. This waterproof flame retarded cable, through setting up first waterproof layer, second waterproof layer and third waterproof layer three-layer protection, make this cable waterproof performance better, through the clay layer, the filler, the setting on first fire-retardant layer and the fire-retardant layer of second, can prevent the spontaneous combustion that arouses the cable because inside reason, prevent the emergence of conflagration, also can externally when taking place the conflagration, ensure that this cable is inside not influenced, the fire prevention effect is better, through setting up the armor, backup pad and stretch-proofing layer, there is the stretch-proofing line backup pad inside, the stretch-proofing performance and the shock resistance of this cable have been increased.

However, in the above technical scheme, the outer protection layer is sequentially provided with the wear-resistant layer, the waterproof layer and the flame-retardant layer, so that the outer protection layer can be damaged to a certain extent when an external fire disaster occurs, and the cable can be prevented from burning until the flame-retardant layer is exposed. And because the flame retardant layer only accounts for a part in the outer protective layer, the thickness of the flame retardant layer also causes poor flame retardant effect. In addition, the clay layer is used for retarding flame, so that the quality of the cable is heavier, the transportation is influenced, and the efficiency of carrying and installing the cable is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that the outermost layer of the cable in the prior art is easily damaged by flame, and provides the high-flame-retardant insulated wire which can ensure that a wire tube is not easily damaged when encountering external flame.

In order to solve the technical problems, the utility model adopts the technical scheme that: the utility model provides a high fire-retardant insulated wire, includes a plurality of electric wire cable core, baffle, interior protective layer and is located the oversheath layer in the outside, electric wire cable core and baffle all are located in the interior protective layer, the baffle will the electric wire cable core is separated, the surface on oversheath layer scribbles fire retardant coating, be provided with a plurality of gasbag balls along circumference in the oversheath layer, gasbag ball intussuseption is filled with fire-retardant granule powder.

In foretell technical scheme, the oversheath layer outside scribbles fire protection coating, can produce flame retardant efficiency, and the intraformational gasbag ball of sheath simultaneously when meeting fire incineration cable, the gasbag ball can break and lead to the internal pressure release and erupt fire-retardant particle powder, and the high fire-retardant characteristic of cable is guaranteed to the two-layer fire prevention fire-retardant material of oversheath, makes the oversheath not fragile.

Preferably, still set up the insulating layer between inner protective layer and the oversheath layer, with the flame retardant coating that the insulating layer outside is connected and with the enhancement layer that the flame retardant coating outside is connected, the insulating layer with the laminating of inner protective layer, the enhancement layer with the laminating of oversheath layer. The insulating layer plays the roles of wire harness, protection and insulation. The flame retardant coating is made for fire-retardant material, further improves the fire behaviour of wire tube. The reinforcing layer improves the toughness, the pressure resistance and the damage resistance of the electric wire tube.

Preferably, the outer sheath layer is a low-smoke flame-retardant PVC material layer. Improve the flame retardant property of the outer sheath layer.

Preferably, the fireproof layer is made of mica sheets, so that the high-temperature resistance and the flame retardance of the wire tube can be improved.

Preferably, the reinforcing layer is made of high-density crosslinked polyethylene viscose glass fibers, so that the toughness, the pressure resistance and the damage resistance of the wire pipe can be effectively improved.

Preferably, the inner side of the air bag ball is under negative pressure. The negative pressure is easy to break the air bag ball and can spray the flame-retardant particle powder after meeting external high temperature.

Preferably, the surface of the separator is coated with a heat dissipation coating, so that heat on the cable core of the electric wire is effectively dispersed, and heat accumulation and fire catching are prevented.

Preferably, the insulating layer is a foamed PVC material layer. The porous PVC material is easy for heat transfer, and the heat dissipation performance of the wire tube is improved. The multiple insulating layers can ensure excellent insulating property of the electric wire pipe.

Preferably, the electric wire cable core comprises a conductor, an inner insulating layer and an inner shielding layer from inside to outside in sequence. The inner shielding layer and the inner protective layer are formed by cross weaving galvanized copper wires, so that the shielding performance of the wire tube is better, and the electromagnetic interference between cable cores and between the cable and external electronic equipment is reduced; the inner insulating layer is made of PVC materials, so that the insulating property of the electric wire cable core is ensured, and the heat dissipation of the electric wire cable core is facilitated.

Compared with the prior art, the utility model has the beneficial effects that: the flame-retardant characteristic of the outer sheath layer is improved through the flame-retardant coating of the outer sheath layer and the action of the flame-retardant particle powder in the air bag ball, so that the outer sheath layer is not easily damaged when encountering external flame.

Drawings

Fig. 1 is a schematic view of a structure of a high flame-retardant insulated wire of the present invention.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the present embodiments, certain elements of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, it is only for convenience of description and simplicity of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

The technical scheme of the utility model is further described in detail by the following specific embodiments in combination with the attached drawings:

examples

Fig. 1 shows an embodiment of a high flame-retardant insulated wire, which includes four wire cores 1, a partition board 2, an inner protective layer 3 and an outer sheath layer 4 located on the outermost side, wherein the wire cores 1 and the partition board 2 are both located in the inner protective layer 3, the partition board 2 partitions the wire cores 1 into four cavities, the outer surface of the outer sheath layer 4 is coated with a fire-retardant coating, a plurality of air bag balls 401 are circumferentially arranged in the outer sheath layer 4, and the air bag balls 401 are filled with flame-retardant particle powder.

In this embodiment, an insulating layer 5, a fire-proof layer 6 connected to the outside of the insulating layer 5, and an enhancement layer 7 connected to the outside of the fire-proof layer 6 are further disposed between the inner protective layer 3 and the outer protective sleeve layer 4, the insulating layer 5 is attached to the inner protective layer 3, and the enhancement layer 7 is attached to the outer protective sleeve layer 4. The insulating layer 5 plays roles of wire harness, protection, and insulation. The fire-proof layer 6 is made of a flame-retardant material, so that the flame retardant property of the electric wire pipe is further improved. The reinforcing layer 7 improves the toughness, the pressure resistance and the damage resistance of the electric wire tube.

Specifically, the outer sheath layer 4 is a low-smoke flame-retardant PVC material layer. The flame retardant property of the outer jacket layer 4 is improved.

Wherein, flame retardant coating 6 is made for the mica sheet material, can improve the high temperature resistance and the fire behaviour of wire tube. The reinforcing layer 7 is made of high-density cross-linked polyethylene adhesive glass fiber, and can effectively improve the toughness, the pressure resistance and the breakage resistance of the wire tube. The inside of the balloon 401 is under negative pressure. The negative pressure is easy to break the air bag ball 401 and can eject the flame-retardant particle powder after meeting external high temperature. The surface of the separator 2 is coated with a heat dissipation coating, so that heat on the electric wire cable core 1 is effectively dispersed, and heat accumulation and fire catching are prevented. The insulating layer 5 is a foamed PVC material layer. The porous PVC material is easy for heat transfer, and the heat dissipation performance of the wire tube is improved. The multiple insulation layer 5 ensures excellent insulation of the electric wire tube.

The electric wire cable core 1 includes a conductor 101, an inner insulating layer 102, and an inner shield layer 103 in this order from the inside to the outside. The inner shielding layer 103 and the inner protective layer 3 are formed by cross weaving galvanized copper wires, so that the shielding performance of the wire tube is better, and the electromagnetic interference between cable cores and between the cable and external electronic equipment is reduced; the inner insulating layer 102 is made of PVC material, so that the insulating property of the electric wire cable core 1 is ensured, and the heat dissipation of the electric wire cable core 1 is facilitated.

The working principle or working process of the utility model is as follows: the outer jacket layer 4 outside scribbles fire retardant coating, can produce flame retardant efficiency, and the intraformational gasbag ball 401 of sheath simultaneously when meeting fire incineration cable, gasbag ball 401 can break and lead to the internal pressure release and erupt fire-retardant particle powder, and the high fire-retardant characteristic of cable is guaranteed to the two-layer fire prevention fire-retardant material of outer jacket, makes outer jacket not fragile.

The beneficial effects of this embodiment: the flame-retardant characteristic of the outer sheath layer 4 is improved by the flame-retardant coating of the outer sheath layer 4 and the action of the flame-retardant particle powder in the air bag ball 401, so that the outer sheath layer 4 is not easily damaged when encountering external flame.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a high fire-retardant insulated wire, includes a plurality of electric wire cable core (1), baffle (2), inner protective layer (3) and is located oversheath layer (4) in the outside, electric wire cable core (1) and baffle (2) all are located in inner protective layer (3), baffle (2) will electric wire cable core (1) are separated, its characterized in that, the surface of oversheath layer (4) scribbles fire retardant coating, be provided with a plurality of gasbag balls (401) along circumference in oversheath layer (4), gasbag ball (401) intussuseption is filled with fire-retardant granule powder.

2. The high flame-retardant insulated wire according to claim 1, wherein an insulating layer (5), a fire-proof layer (6) connected with the outside of the insulating layer (5) and a reinforcing layer (7) connected with the outside of the fire-proof layer (6) are further arranged between the inner protective layer (3) and the outer protective sleeve layer (4), the insulating layer (5) is attached to the inner protective layer (3), and the reinforcing layer (7) is attached to the outer protective sleeve layer (4).

3. A high flame-retardant insulated wire as claimed in claim 2, wherein said outer sheath layer (4) is a low-smoke flame-retardant PVC material layer.

4. The insulated wire of claim 2, wherein the flame retardant layer (6) is made of mica sheet material.

5. A highly flame-retardant insulated electric wire as claimed in claim 2, wherein said reinforcing layer (7) is made of high-density crosslinked polyethylene viscose glass fiber.

6. The insulated wire with high flame retardancy according to claim 2, wherein the inside of the air bag ball (401) is under negative pressure.

7. A high flame-retardant insulated wire as claimed in claim 2, wherein the surface of said separator (2) is coated with a heat-dissipating coating.

8. A high flame-retardant insulated wire as claimed in claim 2, wherein the insulating layer (5) is a foamed PVC material layer.

9. A high flame-retardant insulated wire according to claim 8, wherein the wire core (1) comprises a conductor (101), an inner insulating layer (102) and an inner shield layer (103) in this order from the inside to the outside.

10. The high flame-retardant insulated wire according to claim 9, wherein the inner shield layer (103) and the inner protective layer (3) are formed by cross-weaving galvanized copper wires; the inner insulating layer (102) is made of PVC material.

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