A pipe optical cable convenient to identify and blow

Abstract

The application belongs to the technical field of optical cables, and particularly relates to a pipeline optical cable convenient to identify and blow, which comprises an optical fiber, the outer wall of the optical fiber is provided with a fiber ointment, the outer wall of the fiber ointment is provided with a PBT bundle tube, the outer wall of the PBT bundle tube is provided with a central reinforcing member, the outer wall of the PBT bundle tube is provided with a metal belt, the outer wall of the metal belt is provided with an outer protective layer, and a water-blocking filler is arranged between the outer protective layer, the PBT bundle tube and the central reinforcing member; the application adopts triangular sheath protrusions which are uniformly distributed at an angle of 90 degrees on the outer wall of the outer protective layer, effectively reduces the contact area between the optical cable and the inner wall of the pipeline, reduces the frictional resistance to prolong the blowing distance, avoids the direct collision and scraping of the outer protective layer with the pipeline wall, reduces the damage risk of the protective layer, and the sheath protrusions can be used as physical identification marks, so that the optical cable can be distinguished by hand touching in a non-illumination scene, and the problems of easy failure of traditional visual identification and difficult identification in a low-light environment are solved.

Claims

1. A duct optical cable that is easy to identify and blow out, comprising an optical fiber (1), characterized in that, The outer wall of the optical fiber (1) is provided with fiber paste (2), the outer wall of the fiber paste (2) is provided with PBT bundle tube (3), the outer wall of the PBT bundle tube (3) is provided with a central reinforcement member (4), the outer wall of the PBT bundle tube (3) is provided with a metal strip (5), the outer wall of the metal strip (5) is provided with an outer protective layer (8), a water-blocking filler (7) is provided between the outer protective layer (8), the PBT bundle tube (3) and the central reinforcement member (4), a filler (6) is provided between the PBT bundle tube (3), the outer protective layer (8) and the central reinforcement member (4), a sheath protrusion (9) is fixedly connected to the outer wall of the outer protective layer (8), and a coating assembly is provided inside the outer protective layer (8).

2. The easily identifiable and air-blown duct optical cable according to claim 1, characterized in that: The coating assembly includes a water-blocking layer (10), which is fixedly connected to the inside of the outer protective layer (8). An armor layer (11) is fixedly connected to the outer wall of the water-blocking layer (10), an anti-corrosion layer (12) is fixedly connected to the outer wall of the armor layer (11), and an anti-ultraviolet layer (13) is fixedly connected to the outer wall of the anti-corrosion layer (12).

3. The easily identifiable and air-blown duct optical cable according to claim 1, characterized in that: The PBT bundle tube (3) is provided in several groups, and the several groups of PBT bundle tubes (3) are twisted together around the central reinforcing member (4).

4. The easily identifiable and air-blown duct optical cable according to claim 1, characterized in that: The sheath protrusions (9) are evenly distributed along the axial direction of the outer protective layer (8), the circumferential angle between two adjacent sets of sheath protrusions (9) is 90 degrees, and the cross-sectional shape of the sheath protrusions (9) is triangular.

5. The easily identifiable and air-blown duct optical cable according to claim 1, characterized in that: The water-blocking filler (7) is a dry water-blocking yarn or grease, which is filled in the annular gap formed between the PBT bundle tube (3), the outer protective layer (8) and the central reinforcing member (4).

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