Buried heavy armored optical cable

Abstract

The utility model discloses a buried heavy armored optical cable, which comprises a cable core, a filling layer arranged outside the cable core, a flame retardant layer arranged outside the filling layer, a waterproof layer arranged outside the flame retardant layer, an inner sheath layer arranged outside the waterproof layer, an outer sheath layer arranged outside the inner sheath layer, and a plurality of first protruding parts arranged at intervals on the outer side surface of the inner sheath layer. The inner side surface of the inner sheath layer is provided with a plurality of second protruding parts which are arranged at intervals, reinforcing parts are arranged between adjacent second protruding parts, the thickness of four of the plurality of first protruding parts is larger than that of other first protruding parts, the four groups of first protruding parts with larger thickness are uniformly arranged in the circumferential direction, and a metal layer is arranged between every two adjacent first protruding parts. According to the utility model, the inner sheath and the outer sheath are matched with the metal armor layer, so that the overall strength is enhanced, and the compression resistance is improved; meanwhile, a buffer piece is arranged on the inner side of the metal layer, so that the cable core is further protected; and on the other hand, the reinforcers are arranged on the periphery of the cable core, so that the tensile property of the cable is enhanced while the strength of the cable is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, and in particular to an underground heavily armored optical cable. Background Art

[0002] Optical cables used for communication are generally assembled underground when they are assembled outdoors, and underground optical cables require cables to have high compressive resistance to adapt to the downward deformation of the local foundation due to long-term pressure on the surface. The existing utility model patent with application number 202221823060.X discloses an underground communication optical cable, which increases the protection of the optical cable by laying a metal casing. However, the installation cost of the outer metal casing is high, and there are problems of time-consuming and labor-intensive laying. On the other hand, there is an adjustment gap in the metal casing, and the overall structure is not tight, which leads to a waste of resources. Utility Model Content

[0003] The utility model aims to provide an underground heavy-armored optical cable with strong compression resistance and good tensile resistance in view of the deficiencies in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions for an underground heavy-armored optical cable:

[0005] A buried heavy-armored optical cable comprises a core, a filling layer is arranged on the outside of the cable, a flame-retardant layer is arranged on the outside of the filling layer, a waterproof layer is arranged on the outside of the flame-retardant layer, an inner sheath layer is arranged on the outside of the waterproof layer, an outer sheath layer is arranged on the outside of the inner sheath layer, a plurality of first protrusions arranged at intervals are arranged on the outer side surface of the inner sheath layer, a plurality of second protrusions arranged at intervals are arranged on the inner side surface of the inner sheath layer, the inner end sides of the second protrusions abut against the waterproof layer, reinforcement members are further arranged between adjacent second protrusions, four of the plurality of first protrusions are thicker than the other first protrusions, four groups of first protrusions with larger thickness are uniformly arranged circumferentially, a metal layer is arranged between two adjacent ones, the first protrusions between the two adjacent ones abut against the metal layer, and the outer sheath layer is arranged on the outside of the metal layer.

[0006] A further improvement of the underground heavy-armored optical cable of the utility model is that buffer pieces are filled between adjacent first protruding parts and between adjacent second protruding parts.

[0007] A further improvement of the buried heavy armored optical cable of the utility model is that four groups of first protrusions with larger thickness are provided with inner recesses, and two sides of the metal layer are respectively embedded in the inner recesses.

[0008] A further improvement of the underground heavy armored optical cable of the utility model is that a wear-resistant layer is arranged on the outer peripheral side of the outer sheath layer.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The utility model enhances the overall strength and improves the compression resistance by cooperating with the metal armor layer through the inner and outer two sets of sheaths; at the same time, there is a buffer part on the inner side of the metal layer to further protect the cable core; on the other hand, the reinforcement part is arranged on the outer periphery of the cable core, which increases the strength of the optical cable and also enhances the tensile resistance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] In the figure: 1 cable core, 2 filling layer, 3 flame retardant layer, 4 waterproof layer, 5 inner sheath layer, 6 first protrusion, 7 second protrusion, 8 reinforcement member, 9 metal layer, 10 outer sheath layer. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] like Figure 1 As shown, an underground heavy armored optical cable comprises a cable core 1, a filling layer 2 is arranged on the outside of the cable core, and the filling layer can be a filling petroleum jelly composed of refined synthetic oil, hydrophobic silica, hydrogen inhibitor, defoamer, antioxidant and stabilizer. A flame retardant layer 3 is arranged on the outside of the filling layer, a waterproof layer 4 is arranged on the outside of the flame retardant layer, an inner sheath layer 5 is arranged on the outside of the waterproof layer, an outer sheath layer 10 is arranged on the outside of the inner sheath layer, a plurality of first protrusions 6 arranged at intervals are arranged on the outer side of the inner sheath layer, a plurality of second protrusions 7 arranged at intervals are arranged on the inner side of the inner sheath layer, the inner end side of the second protrusions abuts against the waterproof layer, and a reinforcement member 8 is also arranged between adjacent second protrusions, four of the plurality of first protrusions are thicker than the other first protrusions, and the four groups of first protrusions with larger thickness are uniformly arranged circumferentially, a metal layer 9 is arranged between two adjacent ones, the first protrusions between the two adjacent ones abut against the metal layer, and the outer sheath layer is arranged on the outside of the metal layer. The reinforcement member can be composed of wrapped phosphating steel wire.

[0015] Buffering components are filled between adjacent first protrusions and between adjacent second protrusions. The buffering components are made of pressure-resistant material.

[0016] The four groups of first protrusions with larger thickness are provided with inner concave parts, and the two sides of the metal layer are respectively embedded in the inner concave parts, so as to facilitate the installation of the metal layer. The outer peripheral side of the outer sheath layer is provided with a wear-resistant layer.

[0017] The working principle of the utility model is as follows: the optical cable is buried as a whole underground, and the inner sheath, outer sheath and metal layer protect the cable core. After the foundation is subjected to stress for a long time and sinks, the optical cable is squeezed. At this time, the outer sheath is compressed first, the metal layer plays a supporting role, the buffer protects the cable core, and the reinforcement further ensures the supporting strength and protects the cable core.

[0018] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An underground heavy armored optical cable, characterized in that: It includes a cable core, a filling layer is provided on the outside of the cable core, a flame retardant layer is provided on the outside of the filling layer, a waterproof layer is provided on the outside of the flame retardant layer, an inner sheath layer is provided on the outside of the waterproof layer, an outer sheath layer is provided on the outside of the inner sheath layer, a plurality of first protrusions arranged at intervals are provided on the outer side surface of the inner sheath layer, a plurality of second protrusions arranged at intervals are provided on the inner side surface of the inner sheath layer, the inner end sides of the second protrusions abut against the waterproof layer, reinforcement members are further provided between adjacent second protrusions, four of the plurality of first protrusions are thicker than the other first protrusions, four groups of first protrusions with larger thickness are uniformly arranged circumferentially, a metal layer is provided between two adjacent ones, the first protrusions between the two adjacent ones abut against the metal layer, and the outer sheath layer is arranged on the outside of the metal layer.

2. The buried heavy armored optical cable according to claim 1, characterized in that: Buffering components are filled between adjacent first protruding portions and between adjacent second protruding portions.

3. The buried heavy armored optical cable according to claim 2, characterized in that: The four groups of first protrusions with larger thickness are provided with inner recesses, and the two sides of the metal layer are respectively embedded in the inner recesses.

4. The buried heavy armored optical cable according to claim 3, characterized in that: A wear-resistant layer is provided on the outer peripheral side of the outer sheath layer.

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