CN215815334U - Low-temperature impact-resistant communication cable - Google Patents

Abstract

The utility model provides a low-temperature impact-resistant communication cable which comprises a wire core pair, a sheath, a low-temperature-resistant layer and an armor layer, wherein the wire core pair comprises two wire cores which are twisted with each other, 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 low-temperature-resistant layer comprises a first low-temperature-resistant layer and a second low-temperature-resistant layer, and the four first low-temperature-resistant layers are respectively coated on the peripheries of the four wire core pairs; the second low temperature resistant layer is arranged on the inner surface of the sheath, and the armor layer is arranged between the second low temperature resistant layer and the sheath. The high-altitude outdoor low-temperature impact-resistant protection structure has the advantages that the two-level low-temperature impact-resistant protection structure is adopted, the low-temperature impact resistance is greatly enhanced, the high-altitude outdoor low-temperature impact-resistant protection structure can be widely applied to engineering projects of plateau outdoor low temperature, and the reliability of product data transmission is improved.

Description

Low-temperature impact-resistant communication cable

Technical Field

The utility model relates to the technical field of high-reliability cables, in particular to a low-temperature impact-resistant 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.

When laying communication cable outdoors, can receive the influence of severe cold weather, especially to high altitude area, abominable low temperature causes communication cable's damage easily, lays communication cable's in-process, if the cable atress is too big, also causes the damage of cable easily. With the strategy of national western major development, the cables with low-temperature impact resistance used in engineering projects in high-altitude areas are more and more emphasized by people, and the development of a cable capable of being laid outdoors at low temperature is a powerful guarantee for improving the product performance. In view of the above, the present inventors have studied and designed a low-temperature impact-resistant communication cable.

SUMMERY OF THE UTILITY MODEL

The disclosed aim is to provide a low-temperature impact-resistant communication cable, which realizes the purpose of low-temperature impact resistance by arranging a low-temperature-resistant layer and an armor layer on the periphery of a wire core, so as to prolong the service life of a product and improve the reliability of the product for transmitting data under outdoor and low-temperature conditions.

The utility model provides a low-temperature impact-resistant communication cable, which comprises a wire core pair, a sheath, a low-temperature resistant layer and an armor layer, wherein the wire core pair comprises two twisted wire cores, 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 low-temperature-resistant layer comprises a first low-temperature-resistant layer and a second low-temperature-resistant layer, and the four first low-temperature-resistant layers are respectively coated on the peripheries of the four wire core pairs; the second low temperature resistant layer is arranged on the inner surface of the sheath, and the armor layer is arranged between the second low temperature resistant layer and the sheath. The high-altitude outdoor low-temperature impact-resistant protection structure adopts a two-stage low-temperature impact-resistant protection structure, greatly enhances the low-temperature impact resistance, and can be widely applied to high-altitude outdoor low-temperature engineering projects.

According to at least one embodiment of the present disclosure, the low temperature resistant layer is one or several layers of a polyester tape layer. The present disclosure may provide one or more low temperature resistant layers to provide protection against low temperature performance at different levels of strength, depending on the particular circumstances of the laying environment.

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 cross-shaped corner area of the cross-shaped framework adopts an arc-shaped transition structure, which can effectively provide sufficient supporting force for the wire core pair.

According to at least one embodiment of the present disclosure, the top surfaces of the four end portions of the cross-shaped framework adopt arc structures, the arc structures are matched with the inner side surface radians of the second low temperature resistant layer, the contact area between the end portions of the cross-shaped framework and the second low temperature resistant layer can be effectively increased, and the second low temperature resistant layer is prevented from being physically damaged.

According to at least one embodiment of the present disclosure, the communication cable further includes a shield layer disposed between the second cryogenic resistant layer and the armor layer. 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 ripcord disposed between the armor layer 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 between the pair of wire cores and the first low temperature resistant layer, so that the pair of wire cores 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 low temperature impact 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, a low temperature resistant layer 4 and an armor layer 5, wherein the core pair 1 includes two cores 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 preferably uses annealed oxygen-free copper, the diameter of the conductor is preferably 0.49-0.65mm, and can cover the requirements of five types of communication cables to eight types of communication cables, and the insulating layer 112 preferably uses a dow 7387 elastomer material; 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 DF605 polyolefin elastomer material, the low temperature resistant layer 4 comprises a first low temperature resistant layer 41 and a second low temperature resistant layer 42, and four circles of the first low temperature resistant layer 4 are respectively coated on the peripheries of the four pairs of wire core pairs 1; the second low temperature resistant layer 42 is arranged on the inner surface of the sheath 3, the armor layer 5 is arranged between the second low temperature resistant layer 42 and the sheath 3, and the armor layer 5 is preferably made of steel composite tape. The high-altitude outdoor low-temperature impact-resistant protection structure adopts a two-stage low-temperature impact-resistant protection structure, greatly enhances the low-temperature impact resistance, and can be widely applied to high-altitude outdoor low-temperature engineering projects.

The low temperature resistant layer 4 of the present disclosure is one or more layers of a polyester tape layer. The present disclosure may provide one or more low temperature resistant layers to provide low temperature impact resistance protection of varying strength levels depending on the particular circumstances of the installation environment.

The communication cable of the present disclosure further includes a shielding layer 6, and the shielding layer 6 is disposed between the second low temperature resistant layer 42 and the armor layer 5. The shielding layer 6 provided by the present disclosure adopts a metal aluminum foil, and provides reliable external crosstalk resistance.

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 low temperature resistant layer 42 and are mutually matched with the end portions 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 cross corner area of the cross framework 2 adopts an arc-shaped transition structure 21, which can effectively provide enough supporting force for the wire core pair. The top surface of the four ends of the cross skeleton 2 adopts the arc structure 22, the arc structure 22 is mutually matched with the inner side surface radian of the second low temperature resistant layer 42, the contact area between the ends 22 of the cross skeleton 2 and the second low temperature resistant layer 42 can be effectively increased, and the second low temperature resistant layer 42 is prevented from being physically damaged.

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 further comprises reinforcing layers (not shown), wherein the reinforcing layers are respectively arranged on the peripheries of the wire core pairs 1, and the wire core pairs can be effectively prevented from being extruded by external force.

The design of the secondary low-temperature-resistant layer is adopted, so that the low-temperature-resistant grade of the product is effectively improved; the armor layer can improve the shock resistance of the product, and the shielding layer can provide reliable external crosstalk resistance. Through the special structural design, the data transmission of the product is ensured to have high reliability. The outdoor air-conditioning system can be laid in outdoor severe cold environment and is suitable for overhead or underground laying modes.

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 low-temperature impact-resistant communication cable is characterized by comprising a wire core pair, a sheath, a low-temperature resistant layer and an armor layer, wherein the wire core pair comprises two wire cores which are twisted with each other, 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 low-temperature-resistant layer comprises a first low-temperature-resistant layer and a second low-temperature-resistant layer, and the four first low-temperature-resistant layers are respectively coated on the peripheries of the four wire core pairs; the second low temperature resistant layer is arranged on the inner surface of the sheath, and the armor layer is arranged between the second low temperature resistant layer and the sheath.

2. The communication cable of claim 1 wherein said low temperature resistant layer is one or more layers of a polyester tape layer.

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 3 wherein said cruciform baffle has an arcuate transition in its cruciform corner region.

6. The communication cable according to claim 3, wherein the top surfaces of the four ends of the cross-shaped frame are arc structures, and the arc structures are matched with the inner side surface of the second low temperature resistant layer in radian mode.

7. The communication cable of claim 1, further comprising a shield disposed between the second cryogenic resistant layer and the armor layer.

8. The communication cable of claim 1, further comprising a ripcord disposed between the armor layer 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, four of said reinforcement layers being disposed between said wire core pair and said first low temperature resistant layer, respectively.

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