TH73204B - Dry twisted pair fiber optic cable - Google Patents

Abstract

The invention has revealed a dry, completely dry twisted pair fiber optic cable. Relating to the scope of fiber optic communication This type of dry twisted pair fiber optic cable Including extra parts Double strand optical fiber cores, waterproof tape, reinforced fabric and outer protective clothing layer, reinforced core wrapped with external waterproof cloth. Double strand optical fiber core composed of tubes The outer and in-dry buffers using SZ spiral have three structures: inner 6-layer and outer 12-layer, 7-inner and outer 13-layer, 9-inner and 15-layer tubes. The outer layer of every buffer tube consists of 12 optical wires and 1-2 water barrier cloths, excluding the cream, between the inner and outer layers of the buffer tube and the outer core of the fiber. The double twine light has waterproof tape. The waterproof pouring surface outside the core of the double strand optical fiber is wrapped on the reinforcing thread on the reinforced thread. Externally, the reinforced thread fabric has an external protective layer. The largest number of cores in this invention was 288 cores, excluding cream, oil. Prevent the blocking property of fiber optic cable, lighten the weight, strengthen the optical fiber cable mechanical properties. Improve operational efficiency and protect Environment

Claims (9)

Disclaimers (all) which will not appear on the advertisement page: edit 12/27/2018 1.Dry-completely double-stranded fiber optic cable, consisting of a central reinforcing element, consisting of a reinforced core (3), characterized by an addition of a double stranded cable, tape. Waterproof (5), reinforced yarn (6) and outer sheath (7); The outer surface of the moist, central add-on is also stranded. (4) 1-4 waterproof yarns with a linear density of 3,000 to 5,000 dtex; Twin stranded cable cores are supplied To be placed on the outside of the middle reinforcement; The double stranded cable core is formed with an inner SZ. The outer layer of the buffer tube (2), the mash, consists of the following 3 structures: (a) the structure of the 6 buffer tubes (2) the inner layer and 12 loquered buffers (2) the outer layer; (B) the structure of 7 buffer tubes (2) the inner layer and 13 buffer tubes (2) the outer layer; And (c) the structure of 9 buffer tubes (2) on the inner layer, 15 buffer tubes (2) on the outer layer; The buffer tubes (2) are all thick buffers; The looc buffer (2) consists of 12 fiber optic fibers (1) and 1-2 waterproof yarns (4) with a linear thickness of 1,000 to 2,000 dtex and without wax; The waterproof tape (5) is wrapped between the inner layer and the outer layer of the buffer tube. And outside are all twisted-pair cables; Waterproof tape surface (5) outside, all double stranded cable core are stranded with reinforced yarn (6); Torn (8) 1 to 2 strands are choked on the reinforcing yarn (6); The outer sheath (7) is arranged on the outside of the reinforced yarn (6) over the fiber cable. All the linings are completely dry in structure ---------- 1.It is a type of dry twisted pair fiber optic cable. The core consists of the reinforcing parts, the core consists of the reinforcing parts that are included, the reinforcing cores (3), characterized by the addition of a double beaded cores and a waterproof tape (5), fabric, yarn-reinforced (6) and layers. Outer coat (7) outside of the core surface It consists of the aforementioned reinforcement pieces, stranded with 1-4 (4) water barrier yarns with a density of 3,000 to 5,000 dtex. The exterior of the core consists of the reinforcing parts having a double stranded cable core. Buffer tube (2) inner and outer layer which is SZ stranded, the double stranded cable core has the following three structures (A) .The inner layer has 6 buffer tubes, the outer layer has 12 buffer tubes (B), the inner has tubes. 7 buffer tubes The outer layer contains 13 buffer tubes (C) .The inner layer contains 9 buffer tubes. The outer layer contains 15 buffer tubes. The buffer tubes (2), as mentioned above, are completely dry buffer tubes. Twelve strands of tebeng (1) and (4) water barrier yarns 1,000 - 3,000 dtex, 1-2 strands, excluding cream, oil. In between the inner and outer layers of the buffer tube And the outer layer of the double strand fiber optic core has waterproof tape (5) on the surface of the water barrier tape (5) on the outside The double strand optical fiber core is wrapped in one layer of the reinforcing yarn fabric (6), 1-2 strands of broken injection ropes (8) are set on the reinforced yarn fabric (6), there is an external protective layer (7). On the outside of the fabric, the reinforced yarn (6) The fiber optic has a dry type structure. 2. The fully dry twisted pair fiber optic cable as described in claim 1 looks like this: the buffer tube (2) mentioned is made of poly (butylene terephthalate) PBT or modified polypropylene. 3. The fully dry twisted pair fiber optic cable described in claim 1 looks like this: The reinforced core (3) is made of iron phosphate. Galvanized steel GFRP glass fiber reinforced plastic rod or KFRP aramid fiber reinforced plastic rod. 4. The dry-completely double-stranded fiber optic cable as described in claim 1 looks like this: waterproof tape (5), as mentioned, is a double-sided nonwoven waterproof tape. 5.Dry-out twin-twisted fiber optic cable, as mentioned in claim 4, has the following characteristics: double-sided nonwoven waterproof tape, thickness 0.15-0.3 mm. 6. The dry-twisted double-twisted optical fiber cable as described in claim 1 has the following characteristics: fabric, reinforced yarn (6), must be aramid or glass fiber yarn. 7.A fully dry twisted pair fiber optic cable as described in claim 1 looks like this split (8), with a density of 3,000 to 6,000 dtex. 8.A dry twisted pair fiber optic cable as described in claim 1 has the following characteristics: The external protective layer (7) is made of one of the following materials: Linear low-density polyethylene LLDPE Medium-density polyethylene MDPE High-density polyethylene LSZH 9. The fully dry twisted pair fiber optic cable as described in claim 1 looks like this. The aforementioned core reinforcement assembly also includes a plastic backing (9), the outer surface of the reinforced core ( 3) As mentioned, one (9) plastic liner is encapsulated made of polyethylene material 1. 0. The fully dry twisted pair fiber optic cable, as mentioned in one of the claims 1-9, is characterized by the external protective layer (7) with a density of 1.2-2.0 mm.