CN215896050U - Fireproof communication cable - Google Patents

Abstract

The utility model discloses a fireproof communication cable, which comprises a wire core pair, a sheath and a fireproof layer, wherein the wire core pair comprises two wire cores which are mutually twisted, each wire core comprises a conductor and an insulating layer, the insulating layer is coated on the periphery of the conductor, and the four wire core pairs are arranged in the sheath; the fireproof layers comprise a first fireproof layer and a second fireproof layer, and eight first fireproof layers are respectively coated on the peripheries of eight insulating layers; the second flame resistant layer is disposed on an inner surface of the jacket. The two-stage fireproof protection structure is adopted, the fireproof protection strength is greatly enhanced, and the fireproof protection structure can be widely applied to buildings such as office buildings and high-rise residences.

Description

Fireproof communication cable

Technical Field

The utility model relates to the technical field of cables, in particular to a fireproof communication cable.

Background

The wire and cable is a wire product used for transmitting electric (magnetic) energy, information and realizing electromagnetic energy conversion. The electric wire cable in a broad sense is also called as a cable for short, and the cable in a narrow sense refers to an insulated cable which is composed of the following parts: one or more insulated wire cores, and their respective possible coatings, total protective layers and outer protective layers. The communication cable is a cable for transmitting telephone, telegraph, fax document, television and radio program, data and other electric signals, and is formed by twisting more than one pair of mutually insulated wires; the method has various laying modes such as overhead, direct burial, pipeline and underwater; the cable is divided into symmetrical, coaxial and comprehensive cables according to the structure; the communication cable has wider transmission frequency band, larger communication capacity and small external interference, but is not easy to overhaul.

Statistically, the proportion of electrical failure circuit aging in most building fire accidents is about five or more. Along with the process of urbanization, high-rise buildings are more and more, fireproof cables used in the buildings are more and more valued by people, and the fireproof and flame-retardant capabilities of the cables laid in the buildings are a powerful guarantee for improving the fireproof performance of the buildings. In view of the above, the present inventors have studied and designed a fire-resistant communication cable.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a fire prevention communication cable, through set up the flame retardant coating in the wire core periphery, realize the purpose of fire prevention, avoid causing the potential safety hazard because of electrical fault circuit is ageing.

The utility model provides a fireproof communication cable which comprises a wire core pair, a sheath and a fireproof layer, wherein the wire core pair comprises two wire cores which are mutually twisted, each wire core comprises a conductor and an insulating layer, the insulating layer is coated on the periphery of the conductor, and the four wire core pairs are arranged in the sheath; the fireproof layers comprise a first fireproof layer and a second fireproof layer, and eight first fireproof layers are respectively coated on the peripheries of eight insulating layers; the second flame resistant layer is disposed on an inner surface of the jacket. The two-stage fireproof protection structure is adopted, the fireproof protection strength is greatly enhanced, and the fireproof protection structure can be widely applied to buildings such as office buildings and high-rise residences.

According to at least one embodiment of the present disclosure, the fire-blocking layer is one or more layers of a mica tape layer. The present disclosure may provide one or more fire resistant layers depending on the particular circumstances of the installation environment to provide fire protection of varying levels of strength.

According to at least one embodiment of the present disclosure, the communication cable further includes a cross-shaped frame, the cross-shaped frame is disposed in the sheath, and the four pairs of wire cores are respectively disposed in four quadrants of the cross-shaped frame. The cross-shaped framework enables the communication cable to maintain a stable line pair position, reduces crosstalk and keeps impedance stable.

According to at least one embodiment of the present disclosure, the communication cable further includes a wire casing, and the four wire casings are respectively disposed in the inner cavity of the sheath and are mutually matched with the end portion of the cross-shaped framework. The wire casing that this disclosure set up can be so that cross skeleton position maintains in fixed position, prevents the off normal back, and the line is to causing the influence.

According to at least one embodiment of the present disclosure, the communication cable further includes a shielding layer disposed between the second flame resistant layer and the jacket. The shielding layer provided by the present disclosure adopts a metal aluminum foil, and provides reliable external crosstalk resistance.

According to at least one embodiment of the present disclosure, the communication cable further includes a braid disposed between the shielding layer and the sheath.

According to at least one embodiment of this disclosure, the weaving layer that this disclosure set up is the copper wire weaving layer, and the steel wire is woven and can be provided mechanical protection effect and bear the effect of vertical tensile failure.

According to this at least one embodiment of this disclosure, the weaving layer that this disclosure set up is the steel wire weaving layer, and the copper wire can provide electromagnetic interference resistance's shielding effect, and with the ground contact or for the ground wire usefulness, can in time react the electric leakage condition, provides safety protection's shielding effect.

According to at least one embodiment of the present disclosure, the communication cable further includes a tear cord disposed between the braid and the jacket. The tearing rope arranged in the utility model can enable the operator to peel the wire pair in the utility model more quickly and conveniently.

According to at least one embodiment of the present disclosure, air bubbles are distributed within the insulating layer. The present disclosure further improves the electrical insulation properties of the present disclosure with distributed gas bubbles.

According to at least one embodiment of the present disclosure, the communication cable further includes a reinforcing layer, and the reinforcing layer is respectively disposed at the periphery of the wire core pair, so that the wire core pair can be effectively prevented from being extruded by an external force.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural view of a fire-resistant communication cable of the present disclosure.

Detailed Description

The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1, the present disclosure includes a core pair 1, a cross frame 2, a sheath 3 and a fireproof layer 4, wherein the core pair 1 includes two core 11 twisted with each other, the core 11 includes a conductor 111 and an insulating layer 112, the insulating layer 112 covers the periphery of the conductor 111, the conductor 111 is preferably made of annealed oxygen-free copper, the diameter of the conductor is preferably 0.49-0.65mm, and the conductor can cover the requirements of five types of communication cables to eight types of communication cables; the cross framework 2 is arranged in the sheath 3, the four groups of wire core pairs 1 are respectively arranged in four quadrants of the cross framework 3, and the cross framework 2 enables the communication cable to maintain a stable wire pair position, thereby reducing crosstalk and keeping impedance stable; the colors of the four groups of wire core pairs 1 are respectively white blue/blue, white orange/orange, white green/green and white brown/brown; the sheath 3 is preferably made of LSZH (low smoke zero halogen) material, the fireproof layer 4 comprises a first fireproof layer 41 and a second fireproof layer 42, and the first fireproof layer 41 is respectively coated on the periphery of the insulating layer 112; the second fire-resistant layer 42 is provided on the inner surface of the sheath 3. The two-stage fireproof protection structure is adopted, the fireproof protection strength is greatly enhanced, and the fireproof protection structure can be widely applied to buildings such as office buildings and high-rise residences.

The fire-resistant layer 4 of the present disclosure is one or more layers of mica tape layers. The present disclosure may provide one or more fire resistant layers depending on the particular circumstances of the installation environment to provide fire protection of varying levels of strength.

The communication cable of the present disclosure further includes a shielding layer 5, and the shielding layer 5 is disposed between the second fireproof layer 42 and the sheath 3. The shielding layer 5 provided by the present disclosure adopts a metal aluminum foil, providing reliable external crosstalk resistance.

The communication cable of the present disclosure further includes a braid 6, the braid 6 being disposed between the shielding layer 5 and the sheath 3. The braided layer 6 is braided by adopting metal wires, copper wires or steel wires, and the steel wires can provide mechanical protection and bear longitudinal tensile breaking force; the copper wire can provide the shielding effect of electromagnetic interference resistance, contacts with the ground wire or acts as the ground wire, can reflect the electric leakage condition in time, and provides the shielding effect of safety protection.

The communication cable of the present disclosure further includes wire slots (not shown), and the four wire slots are respectively disposed on the inner side of the second fireproof layer 42 and are mutually matched with the end portion of the cross-shaped framework 2. The wire casing that this disclosure set up can be so that cross skeleton position maintains in fixed position, prevents the off normal back, and the line is to causing the influence.

The communication cable of the present disclosure further includes a tear cord 7, the tear cord 7 being disposed between the braid 6 and the jacket 3. The tearing rope 7 arranged in the utility model can enable the operator to peel the wire pair in the utility model more quickly and conveniently.

Air bubbles are distributed within the insulating layer 112 of the present disclosure. The present disclosure further improves the electrical insulation properties of the present disclosure with distributed gas bubbles.

The communication cable of the present disclosure further includes a reinforcing layer 8, the reinforcing layer 8 is respectively disposed on the periphery of the wire core pair 1, and the wire core pair can be effectively prevented from being extruded by external force.

The fireproof layer can be laid in scenes such as high-rise buildings and the like needing a large amount of wiring, and the design of a secondary fireproof layer is adopted, so that the fireproof grade of the product is effectively improved; the shielding layer can provide reliable anti-alien crosstalk performance; the braid can provide mechanical protection and bear the longitudinal tensile strength or can provide electromagnetic interference shielding.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims (10)

1. A fireproof communication cable is characterized by comprising a wire core pair, a sheath and a fireproof layer, wherein the wire core pair comprises two wire cores which are mutually twisted, each wire core comprises a conductor and an insulating layer, the insulating layer is coated on the periphery of the conductor, and the four wire core pairs are arranged in the sheath; the fireproof layers comprise a first fireproof layer and a second fireproof layer, and eight first fireproof layers are respectively coated on the peripheries of eight insulating layers; the second flame resistant layer is disposed on an inner surface of the jacket.

2. A communications cable according to claim 1 wherein the fire resistant layer is one or more layers of a layer of mica tape.

3. The communication cable of claim 1, further comprising a cross-frame disposed within the jacket, wherein four of the wire core pairs are disposed within four quadrants of the cross-frame, respectively.

4. The communication cable of claim 3, further comprising wire slots, four of said wire slots being disposed in said interior cavity of said sheath and cooperating with said ends of said cruciform baffle.

5. The communication cable of claim 1 further comprising a shielding layer disposed between said second flame resistant layer and said jacket.

6. The communication cable of claim 5, further comprising a braid disposed between the shield and the jacket.

7. The communication cable of claim 6, wherein said braid is one of a copper braid or a steel braid.

8. The communication cable of claim 6, further comprising a tear cord disposed between the braid and the jacket.

9. The communication cable of claim 1 wherein the interior of the insulating layer is interspersed with air bubbles.

10. The communication cable of claim 1, further comprising a reinforcement layer, each of said reinforcement layers being disposed about a periphery of said pair of cores.

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