CN204904905U - Compound optical fiber cable of triangle -shaped trouble self feed back - Google Patents

Abstract

The utility model discloses a compound optical fiber cable of triangle -shaped trouble self feed back, including a cable core, the cable core be trefoil formation transposition by three insulation core to form, insulation core comprises conductor and the insulating layer of crowded package outside the conductor, the crowded package triangle -shaped area that blocks water outside the cable core, the oversheath is fed back to outmost crowded packet of triangle -shaped trouble, block water the area and the oversheath between around the package triangle -shaped high -strength fiber weave the strengthening rib that reticulates. This cable wholly is the triangle -shaped structure, increases the stability of structure itself, practices thrift the filler material, practices thrift usable floor area. This practical sinle silk has that the tensile type is strong, stability is high, practices thrift the filler material, practices thrift usable floor area, with low costs, characteristic such as fire -resistant blocks water.

Description

A triangular fault self-feedback composite optical fiber cable

technical field

The utility model relates to the technical field of cables, in particular to a triangular fault self-feedback composite optical fiber cable.

Background technique

At present, cables for transmitting telephone, telegraph, fax files, TV and radio programs, data and other electrical signals are mostly twisted by more than one pair of mutually insulated wires. Compared with overhead open wires, communication cables have the advantages of large communication capacity, high transmission stability, good confidentiality, and less affected by natural conditions and external interference.

Communication cables can be divided into long-distance communication cables for long-distance transmission and regional communication cables for shorter-distance transmission according to their uses. Long-distance communication cables can be divided into relay communication cables for connection and trunk long-distance cables (or trunk communication cables) for inter-city transmission. Regional communication cables can be divided into local telephone cables, inter-office or intra-office connections (lead wires, etc.) distribution cables and office cables. Trunk long-distance cables are often comprehensive communication cables composed of cables of different structures.

Various filling materials are used in the production of multi-core cables, but most of the filling materials will produce environmental pollution in the process of production, transportation, use and testing. Therefore, reducing the use of filling materials can effectively reduce environmental pollution. At the same time, the cost of cable production is reduced.

When multiple round cables are laid side by side, there will be gaps, which will occupy too much land area and cause unnecessary waste. Triangular cables can change this phenomenon, and this method is suitable for multiple cables arranged in the same casing.

In the prior art, the communication cable has a circular structure, and it will be unstable when installed in a corner. Therefore, it is necessary to provide a cable suitable for installation in a specific location such as a wall or a corner.

Utility model content

In order to solve the problems of the prior art, the utility model provides a triangular fault self-feedback composite optical fiber cable with strong tensile strength, high stability, saving filling materials, saving use area, low cost, water resistance and fire resistance.

A triangular fault self-feedback composite optical fiber cable described in the utility model includes a cable core, and the cable core is composed of two insulated cores, a control core and an optical fiber arranged in the center of the three cores in a triangular shape. Arranged and twisted; extruded triangular water blocking tape outside the cable core, braided anti-extrusion layer outside the triangular water blocking tape, and extruded triangular fault feedback outer sheath on the outermost layer; between the extruded layer and the outer sheath Wrapping triangular high-strength fibers are woven into mesh-like reinforcing ribs.

As a further improvement, the insulated wire core is composed of a conductor, an insulating layer extruded outside the conductor, and a binding layer coated with asphalt on the outer surface extruded outside the insulating layer.

As a further improvement, the wire core is composed of a control conductor, a shielding layer extruded outside the control conductor, and an armor layer extruded outside the shielding layer.

Compared with the prior art, the utility model has the following beneficial effects: (1) The traditional multi-core cable needs to be cabled and consumes filling materials, but the cable does not need to be filled and maintains a high roundness, saving the cost of filling materials and reducing the cost by 5% above; (2) Placing a reinforcing core in the middle of the conductor can greatly increase the tensile strength of the cable; (3) A layer of high-strength fiber braided into a network of reinforcing ribs is provided between the extrusion layer and the sheath to help strengthen the cable. (4) In addition, the sheath is made of a FRPE material. When the cable fails, the color of the sheath at the fault point can change color with the increase of temperature, so as to achieve fast, The purpose of accurately finding the fault point; (5) The cable has a triangular structure as a whole, which increases the stability of the structure itself, saves filling materials, and saves the use area; (6) There is a fire-resistant tie layer outside the insulating layer to protect the insulating layer It is not easy to melt under high temperature; (7) The optical fiber is built in the center, which can monitor the temperature and transmission load of the power cable in real time.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

A triangular fault self-feedback composite optical fiber cable as shown in Figure 1 includes a cable core, and the cable core is formed by two insulated cores, a control core and an optical fiber 7 arranged at the center of the three cores. Twisted in a triangular arrangement; a triangular water-blocking strip 8 is extruded outside the cable core, an anti-extrusion layer 9 is braided outside the triangular water-blocking strip 8, and a triangular fault feedback outer sheath 11 is extruded on the outermost layer; Between the outer sheath 11 and the outer sheath 11, the triangular high-strength fiber is woven into a network-like reinforcing rib 10 .

Wherein, the insulated wire core is composed of a conductor 1 , an insulating layer 2 extruded outside the conductor 1 , and a binding layer 3 extruded outside the insulating layer 2 and coated with asphalt.

Wherein, the wire core is composed of a control conductor 4 , a shielding layer 5 extruded outside the control conductor 4 , and an armor layer 6 extruded outside the shielding layer 5 .

There are many specific application ways of the utility model, and the above descriptions are only the preferred implementation modes of the utility model. Improvements, these improvements should also be regarded as the protection scope of the present utility model.

Claims (3)

1. A triangular fault self-feedback composite optical fiber cable, comprising a cable core, is characterized in that: the cable core is composed of two insulated wire cores, a control wire core and an optical fiber (7 ) are twisted in a triangular arrangement; the cable core is extruded with a triangular water-blocking strip (8), the triangular water-blocking strip (8) is braided with an anti-extrusion layer (9), and the outermost layer is extruded with a triangular fault feedback outer sheath Sleeve (11); between the extruded layer (9) and the outer sheath (11), the triangular high-strength fibers are wrapped around the reinforcing ribs (10) woven into a net shape. 2. The triangular fault self-feedback composite optical fiber cable according to claim 1, characterized in that: the insulated core is composed of a conductor (1), an insulating layer (2) extruded outside the conductor (1), and an extruded The outer surface of the insulating layer (2) is coated with an asphalt binding layer (3). 3. The triangular fault self-feedback composite optical fiber cable according to claim 1, characterized in that: the core is composed of a control conductor (4), a shielding layer (5) extruded outside the control conductor (4), and an extruded It is composed of an armor layer (6) wrapped outside the shield layer (5).