CN202948174U - New all-dielectric self-supporting optical cable - Google Patents

Abstract

The utility model relates to the field of communication optical cables, in particular to a novel full-medium self-supporting optical cable, which comprises a unit cable and a sheath layer, wherein the unit cable comprises an optical fiber and a sleeve, the sleeve wraps the optical fiber, the sheath layer comprises an inner sheath, a built-in reinforcement and an outer sheath, the unit cable is arranged inside the inner sheath, the built-in reinforcement wraps the inner sheath, the outer sheath wraps the built-in reinforcement, and the built-in reinforcement is a reinforcement made of high-strength yarns; the utility model discloses a built-in reinforcement that high-strength yarn made, adopt aramid fiber as built-in reinforcement among the prior art to compare, stretch-proofing ability and packing effect all are close aramid fiber, but the price is less than one tenth of aramid fiber, greatly reduced the manufacturing cost of full-media self-supporting optical cable.

Description

New all-dielectric self-supporting optical cable

technical field

The utility model relates to the field of communication optical cables, in particular to a novel all-dielectric self-supporting optical cable.

Background technique

All-dielectric self-supporting optical cable (ADSS optical cable) is widely used in the built 220kV, 110kV, 35kV voltage level transmission lines. Because the electromagnetic interference around the high-voltage transmission line is strong and the distance between the towers is large, the load-bearing unit in the optical cable cannot have a metal reinforcing core or metal material; while the aramid yarn has low density, strong tensile resistance, and high breaking strength. It has the advantages of low elongation at break and is a high-quality material used as a load-bearing unit for all-dielectric self-supporting optical cables. However, aramid fibers are expensive. At present, aramid fibers need to be imported completely, resulting in high production costs of all-dielectric self-supporting optical cables.

Contents of the invention

The purpose of the utility model is to overcome the shortcomings and deficiencies in the prior art, and provide a new type of all-dielectric self-supporting optical cable with low production cost.

In order to solve the above technical problems, the utility model adopts the following technical scheme: a new all-dielectric self-supporting optical cable, including a unit cable and a sheath layer, the unit cable includes an optical fiber and a sleeve, the sleeve covers the optical fiber, and the sheath layer includes an inner sheath sleeve, built-in reinforcement and outer sheath, the unit cable is arranged inside the inner sheath, the built-in reinforcement covers the inner sheath, the outer sheath covers the built-in reinforcement, and the built-in reinforcement is made of high-strength yarn pieces.

Wherein, there are at least two unit cables.

Wherein, a central reinforcement is also included, and the central reinforcement is arranged between the unit cables.

Wherein, the central reinforcement is a reinforcement made of non-metallic reinforcing material.

Wherein, it also includes a filling rope, and the filling rope is arranged inside the inner sheath.

Wherein, the unit cable is filled with fiber paste.

Wherein, the inner sheath is filled with cable paste.

Wherein, the outer sheath is a sheath made of anti-tracking polyethylene.

Beneficial effects of the utility model: the utility model uses a built-in reinforcement made of high-strength yarn. Compared with the aramid fiber used in the prior art as a built-in reinforcement, the tensile resistance and filling effect are close to aramid fiber, but the price is less than One tenth of that of aramid fiber, which greatly reduces the production cost of all-dielectric self-supporting optical cable.

Description of drawings

Fig. 1 is the structural representation of the utility model layer-twisted type;

Fig. 2 is the structural representation of the utility model central bundle tube type;

Figures 1 and 2 include the following reference numbers:

Unit cable-1; Optical fiber-2; Fiber paste-3; Sleeve-4; Central reinforcement member-5; Filling rope-6;

Inner reinforcement - 9; Outer sheath - 10.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in detail.

Embodiment one:

Referring to Figures 1 and 2, the utility model includes a unit cable 1 and a sheath layer, the unit cable 1 includes an optical fiber 2 and a sleeve 4, the sleeve 4 covers the optical fiber 2, and the sheath layer includes an inner sheath 8 and a built-in reinforcement 9 and the outer sheath 10, the unit cable 1 is arranged inside the inner sheath 8, the built-in reinforcement 9 covers the inner sheath 8, the outer sheath 10 covers the built-in reinforcement 9, and the built-in reinforcement 9 is made of high-strength yarn reinforcements.

The utility model adopts high-strength yarn to make the built-in reinforcement. Compared with the prior art using aramid fiber as the built-in reinforcement, the tensile resistance and filling effect are close to aramid fiber, but the price is less than one-tenth of the aramid fiber , which greatly reduces the production cost of the all-dielectric self-supporting optical cable.

At present, ADSS optical cables can be divided into two types: layer twisted type and central bundle tube type from the structure. Referring to FIG. 1 , the present embodiment is a structure of a layer-twisted ADSS optical cable. There are at least two unit cables 1 in this embodiment. The at least two unit cables 1 are arranged inside the inner sheath 8 . It also includes a central reinforcement 5 , and the central reinforcement 5 is arranged between at least two unit cables 1 . Preferably, the central reinforcement 5 is a reinforcement made of non-metallic reinforcement material. It also includes a filling rope 6 which is arranged inside the inner sheath 8 . The unit cable 1 of the layer-stranded ADSS optical cable is filled with fiber paste 3 , and the inner sheath 8 is filled with cable paste 7 . The cable paste 7 prevents the optical cable from being infiltrated by moisture and moisture during long-term use. The fiber paste 3 not only avoids the intrusion of moisture, but also prevents the optical fibers 2 from rubbing against each other to damage the optical fibers 2 during the cable manufacturing process, thereby ensuring good mechanical properties of the optical fibers 2 and prolonging the service life.

Embodiment two:

Referring to FIG. 2, the present embodiment is a structure of a central beam tube type ADSS optical cable. There is only one element cable 1 in the central bundle tube ADSS optical cable, the sleeve 4 covers the optical fiber 2 , and the inner sheath 8 covers the sleeve 4 . The fiber paste 3 is filled in the element cable 1 to avoid the intrusion of moisture. Other technical features of the second embodiment are the same as those of the first embodiment, and will not be repeated here.

As a preferred embodiment, the outer sheath 10 of the present invention is a sheath made of anti-tracking polyethylene.

The main process flow of the utility model is: optical fiber storage; optical fiber detection, fiber coloring (or after coloring and tape); optical fiber coloring detection, plastic coating; plastic coating detection, cable forming; cable detection, plus The sheath layer; after adding the sheath layer, it is tested to obtain a finished product.

The utility model is suitable for high-voltage transmission lines and trunk network systems. It is a new type of product developed by the applicant summing up years of production and manufacturing experience, researching market demand, and after careful design and multiple tests. In the process of structural design, the structural optimization of the optical cable and the cost reduction of the optical cable are mainly considered. , secondly, the optical performance and mechanical performance of the optical fiber are guaranteed, and the convenience of process processing is also considered; it is a high-tech product in the manufacture of optical fiber and cable, which can bring certain economic benefits. The technology is greatly reduced, and the prospect of use is very broad.

The above content is only a preferred embodiment of the present utility model. For those skilled in the art, according to the idea of the present utility model, there will be changes in the specific implementation and application scope. Utility model restrictions.

Claims (8)

1. New all-dielectric self-supporting optical cable, including unit cable and sheath layer, unit cable includes optical fiber and sleeve, sleeve covers optical fiber, sheath layer includes inner sheath, built-in strength member and outer sheath, unit cable It is arranged inside the inner sheath, the built-in reinforcement covers the inner sheath, and the outer sheath covers the built-in reinforcement, and it is characterized in that: the built-in reinforcement is a reinforcement made of high-strength yarn. 2. The novel all-dielectric self-supporting optical cable according to claim 1, characterized in that there are at least two unit cables. 3. The novel all-dielectric self-supporting optical cable according to claim 2, characterized in that it further comprises a central strengthening member, and the central strengthening member is arranged between the unit cables. 4. The novel all-dielectric self-supporting optical cable according to claim 3, characterized in that: the central strengthening member is made of non-metallic reinforcing material. 5. The new all-dielectric self-supporting optical cable according to claim 3, characterized in that it further comprises a filling rope, and the filling rope is arranged inside the inner sheath. 6. The novel all-dielectric self-supporting optical cable according to claim 1, characterized in that: said element cable is filled with fiber paste. 7. The new all-dielectric self-supporting optical cable according to claim 2, characterized in that: the inner sheath is filled with cable compound. 8. The new all-dielectric self-supporting optical cable according to claim 1, characterized in that: the outer sheath is made of anti-tracking polyethylene.

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