Anti-icing nonmetal self-supporting optical cable

Abstract

The utility model relates to the technical field of optical fiber cables and cables, and provides an anti-icing nonmetal self-supporting optical cable, which comprises a wire core layer and a protective layer arranged on the outer wall of the wire core layer, the protection layer comprises an inner protection layer, a reinforced heating layer and an outer sheath which are sequentially arranged from inside to outside, the inner protection layer is arranged on the outer wall of the wire core layer through an extrusion process, the reinforced heating layer is wound on the outer wall of the inner protection layer, and the outer sheath is arranged on the outer wall of the reinforced heating layer through the extrusion process. According to the utility model, the defects in the prior art are overcome, the design is reasonable, the structure is compact, the heating capability of the heating layer is enhanced by separately winding the aramid fiber bundle and the carbon fiber heating wire bundle outside the inner protective layer, the effect of melting coated ice is achieved, and the bearing capability of the optical cable is improved. The folding part is arranged in the outer sheath, so that the outer sheath has a larger expansion degree after being heated, ice attached to the surface of the outer sheath cracks under expansion force, and falling of the ice is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical fiber cable, cable technical field, concretely relates to a kind of anti-icing non-metallic self-supporting optical cable. BACKGROUND

[0002] In winter and mountain icing is one of the natural disasters of communication system, since self-supporting optical cable is increased ice load, it will bring certain mechanical damage to optical cable, tower and hardware, and when icing is serious, it will break line and tower, leading to large-area signal interruption accident, since the accident often occurs in severe winter season, snowbound mountain, or mountain diurnal temperature difference is big, especially in the mountain area with inconvenient transportation, rescue condition is very difficult, causes long time network interruption, causes major loss to national economy, in recent years, with the natural disaster caused by global abnormal weather gradually increasing, to solve the problem of communication line icing, which is a serious threat to the safe operation of communication system, the research on communication line icing problem is urgent, therefore, we propose a kind of anti-icing non-metallic self-supporting optical cable. SUMMARY

[0003] (I) the technical problem solved

[0004] In view of the deficiencies in the prior art, the utility model provides an anti-icing non-metallic self-supporting optical cable to solve the above problems existing in the prior art.

[0005] (II) technical scheme

[0006] To achieve the above object, the utility model discloses the following technical scheme: an anti-icing non-metallic self-supporting optical cable, including core layer and the protection layer being arranged on the outer wall thereof;

[0007] The protection layer includes inner protective layer, reinforcing heating layer and outer sheath arranged in sequence from inside to outside, the inner protective layer is arranged on the outer wall of the core layer by extrusion process, the reinforcing heating layer is wound on the outer wall of the inner protective layer, and the outer wall of the reinforcing heating layer is provided with the outer sheath by extrusion process.

[0008] Further, the outer sheath includes inner folding sleeve and outer round sleeve arranged from inside to outside, the outer round sleeve is arranged on the outer wall of the inner folding sleeve by extrusion process, and the inner folding sleeve is provided with a plurality of folding portions facing the core layer, so as to provide greater deformation degree for the inner folding sleeve heated.

[0009] Further, the folding portion can be arc-shaped, triangular or trapezoidal.

[0010] Further, the core layer includes central reinforcing member, optical unit and filling rope, and the optical unit and filling rope are twistedly connected around the central reinforcing member.

[0011] Further, the central reinforcing member is made of FRP or carbon fiber composite core.

[0012] Further, the optical unit is a PBT loose tube, at least two optical fibers are arranged in the loose tube, and a fiber paste is filled in a gap between the optical fibers and the PBT loose tube, and the number of the optical units is at least one.

[0013] Further, the material of the filling rope and the inner protective layer is polyethylene.

[0014] Further, the material of the reinforcing and heating layer is aramid fiber and carbon fiber heating wire, and the aramid fiber and the carbon fiber heating wire are separately wound outside the inner protective layer.

[0015] Further, the material of the outer protective sleeve is polyethylene or electric tracking resistant polyethylene.

[0016] (Three) beneficial effects

[0017] The embodiment of the utility model provides a kind of anti-icing non-metallic self-supporting optical cable.It has the following beneficial effects:

[0018] 1, by setting aramid fiber and carbon fiber heating wire separately wound outside the inner protective layer, the heating capacity of reinforcing and heating layer is increased, to reach the effect of thawing ice, and make the optical cable whole has stronger strength, improves the carrying capacity of optical cable.

[0019] 2, by being equipped with folding portion in outer protective sleeve, make outer protective sleeve have greater degree of expansion after being heated, ice attached to the surface of outer protective sleeve is cracked by expansion force, facilitate icing to fall off. DETAILED DESCRIPTION

[0020] Fig. 1 It is the arc-shaped schematic view of the folding portion structure of the utility model;

[0021] Fig. 2 It is the triangular schematic view of the folding portion structure of the utility model.

[0022] In the drawing: 1, central reinforcing member;2, optical unit;3, filling rope;4, inner protective layer;5, reinforcing and heating layer;6, outer protective sleeve;61, inner folding cover;62, outer round cover;63, folding portion. DETAILED DESCRIPTION

[0023] To make the purpose, technical scheme and advantage of the embodiment of the utility model more clear, the technical scheme in the embodiment of the utility model will be clearly and completely described in conjunction with the drawings in the embodiment of the utility model, obviously, the described embodiment is a part of the embodiment of the utility model, instead of all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor are within the protection scope of the utility model.

[0024] Refer to the drawings Figs. 1-2 An anti-icing non-metallic self-supporting optical cable, comprising a core layer and a protective layer arranged on the outer wall thereof;

[0025] The protective layer comprises an inner protective layer 4, a reinforcing heating layer 5 and an outer sheath 6 arranged in sequence from inside to outside, the inner protective layer 4 is arranged on the outer wall of the core layer by an extrusion process, the reinforcing heating layer 5 is wound on the outer wall of the inner protective layer 4, and the outer wall of the reinforcing heating layer 5 is provided with the outer sheath 6 by an extrusion process. When the surface of the optical cable is iced, the reinforcing heating layer 5 generates heat after current is passed through, so that the ice on the surface of the outer sheath 6 is melted, and the optical cable is prevented from bearing too much weight to cause wire breakage.

[0026] In this embodiment, the outer sheath 6 comprises an inner folding sleeve 61 and an outer circular sleeve 62 arranged in sequence from inside to outside, the outer circular sleeve 62 is arranged to make the outer wall of the outer sheath 6 circular, so as to facilitate dragging of the optical cable, the outer circular sleeve 62 is arranged on the outer wall of the inner folding sleeve 61 by an extrusion process, a plurality of folding portions 63 of the inner folding sleeve 61 are arranged towards the core layer, the folding portions 63 have gaps with the reinforcing heating layer 5, the gaps can provide the inner folding sleeve 61 with additional degrees of freedom and deformation space, so that the inner folding sleeve 61 is more easily stretched and deformed when heated, the inner folding sleeve 61 is stretched and expanded when heated, so that the outer sheath 6 as a whole has greater expansion, and the ice attached to the surface of the outer sheath 6 is cracked by the expansion force, facilitating ice shedding.

[0027] In this embodiment, the folding portions 63 can be arc-shaped, triangular or trapezoidal, so as to facilitate setting the size of the folding portions 63 according to actual application materials, to control the expansion of the outer sheath 6.

[0028] In this embodiment, the core layer comprises a central reinforcing member 1, optical units 2 and filling ropes 3, the optical units 2 and the filling ropes 3 are twistedly connected around the central reinforcing member 1.

[0029] In this embodiment, the central reinforcing member 1 is made of FRP or carbon fiber composite core, to reduce the weight of the optical cable while maintaining its high strength.

[0030] Preferably, the central reinforcing member 1 is φ2.5mm FRP.

[0031] In this embodiment, the optical unit 2 is a PBT loose sleeve, which can effectively protect the optical fiber and improve the performance of the optical cable, at least two optical fibers are arranged in the loose sleeve, and optical paste is filled in the gap between the optical fiber and the PBT loose sleeve, to enhance the waterproof performance of the optical cable, and the number of the optical unit 2 is at least one.

[0032] Preferably, the optical unit 2 is two φ2.3mm PBT loose sleeves, and six optical fibers are arranged in each loose sleeve; and four φ2.3mm filling ropes 3.

[0033] In this embodiment, the materials of the filling ropes 3 and the inner protective layer 4 are polyethylene, so that the optical cable has good low-temperature resistance.

[0034] In the embodiment, the material of the reinforcing heating layer 5 is aramid fiber and carbon fiber heating wire, which are wound separately outside the inner protective layer 4, so as to increase the heating capacity of the reinforcing heating layer 5 and make it have stronger strength and improve the carrying capacity of the optical cable.

[0035] In the embodiment, the material of the outer protective sleeve 6 is polyethylene or electric track resistant polyethylene, so as to make the optical cable have good corrosion resistance.

[0036] It should be noted that, in this document, the terms such as first and second are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between such entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or inherent to such a process, method, article or apparatus. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or apparatus including the element.

[0037] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An anti-icing non-metallic self-supporting optical cable, characterized in that: It includes the core layer and a protective layer disposed on its outer wall; The protective layer includes an inner protective layer (4), a reinforcing heating layer (5), and an outer sheath (6) arranged sequentially from the inside to the outside. The inner protective layer (4) is set on the outer wall of the core layer by an extrusion process. The reinforcing heating layer (5) is wrapped around the outer wall of the inner protective layer (4), and the outer wall of the reinforcing heating layer (5) is provided with an outer sheath (6) by an extrusion process. The outer sheath (6) includes an inner folded sleeve (61) and an outer circular sleeve (62) arranged from the inside to the outside. The outer circular sleeve (62) is set on the outer wall of the inner folded sleeve (61) by an extrusion process. The inner folded sleeve (61) is provided with a plurality of folded portions (63) facing the core layer, which provides greater deformation for the inner folded sleeve (61) when heated. The core layer includes a central reinforcing member (1), an optical unit (2), and a filler rope (3), wherein the optical unit (2) and the filler rope (3) are twisted together around the central reinforcing member (1); The reinforced heating layer (5) is made of aramid bundles and carbon fiber heating wire bundles, which are separately wound around the outer side of the inner protective layer (4).

2. The anti-icing non-metallic self-supporting optical cable as described in claim 1, characterized in that: The fold (63) can be arc-shaped, triangular, or trapezoidal.

3. The anti-icing non-metallic self-supporting optical cable as described in claim 1, characterized in that: The central reinforcing member (1) is made of FRP or carbon fiber composite core.

4. The anti-icing non-metallic self-supporting optical cable as described in claim 1, characterized in that: The optical unit (2) is a PBT loose tube, which contains at least two optical fibers. Fiber grease is filled in the gap between the optical fibers and the PBT loose tube. The number of optical units (2) is at least one.

5. The anti-icing non-metallic self-supporting optical cable as described in claim 1, characterized in that: The filling rope (3) and the inner protective layer (4) are made of polyethylene.

6. The anti-icing non-metallic self-supporting optical cable as described in claim 1, characterized in that: The outer sheath (6) is made of polyethylene or trace-resistant polyethylene.

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