Layer-stranded high-temperature-resistant high-strength optical cable

Abstract

The utility model belongs to the technical field of optical cables, and discloses a layer-stranded high-temperature-resistant high-strength optical cable, which comprises a plurality of optical fiber units, the plurality of optical fiber units are arranged in a tensile material layer in a penetrating manner, and a central reinforcing piece is arranged at the central position of the tensile material layer. The plurality of optical fiber units are distributed on the periphery of the central reinforcing member in an annular array, each optical fiber unit comprises a plurality of optical fibers, a compression-resistant elastomer and a high-temperature-resistant material layer, the plurality of optical fibers are tightly wrapped by the compression-resistant elastomer, and the high-temperature-resistant material layer is arranged outside the compression-resistant elastomer; according to the utility model, a multi-tube layer-stranded structure is adopted, the pitch is small, the structure is compact, under the extreme conditions of high-strength stretching and high-temperature creep, the internal optical fiber is protected from being broken by force under the conditions, and the communication is ensured not to be damaged; the multi-tube layer-stranded structure can also prevent all the units from being snapped under extreme conditions, and even if a certain unit of the multi-tube structure is damaged due to uneven stress, other units can communicate as usual.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of optical cable, specifically relates to a layer stranding type high temperature resistant high strength optical cable. BACKGROUND

[0002] As a transmission medium, optical cable is widely used in the field of communication, for example, optical cable can be applied to communication machine room, data center, mine, nuclear power facility, high-rise building, airport, subway and other places. Accordingly, the optical cable has high requirements for flame-retardant and fire-resistant performance under fire conditions.

[0003] Optical cable is manufactured to meet the performance specifications of optics, mechanics or environment, which is a communication cable assembly using one or more optical fibers placed in a sheath as a transmission medium and can be used alone or in groups, however, the pitch of the optical cable in the prior art is large, and the structure is not compact enough, in the extreme case of high-strength stretching and high-temperature creep, the optical fiber inside the optical cable is easy to be broken under stress, thereby causing communication damage. UTILITY MODEL CONTENT

[0004] The utility model discloses a layer stranding type high temperature resistant high strength optical cable to solve the problem that the pitch is large, the structure is not compact enough, in the extreme case of high-strength stretching and high-temperature creep, the optical fiber inside the optical cable is easy to be broken under stress, thereby causing communication damage in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a layer stranding type high temperature resistant high strength optical cable, comprising a plurality of optical fiber units, a plurality of optical fiber units are arranged in the tensile material layer, the center position of the tensile material layer is provided with the center reinforcing part, a plurality of optical fiber units are arranged in the periphery of the center reinforcing part in the form of ring array, the optical fiber unit includes a plurality of optical fibers, compression elastic body and high temperature resistant material layer, a plurality of optical fibers are tightly wrapped by compression elastic body, the high temperature resistant material layer is arranged outside the compression elastic body, the outside of the tensile material layer is provided with the fastening material layer, the fastening material layer is provided with the identification line of division extending along the length direction of the tensile material layer, the gap between the tensile material layer and the optical fiber unit and the gap between the optical fiber unit and the center reinforcing part are provided with the filling material.

[0006] Preferably, the optical fiber is a colored optical fiber.

[0007] Preferably, the number of cores of the optical fiber is 4 cores, 6 cores, 8 cores, 9 cores, 12 cores, 18 cores, 24 cores, 36 cores or 48 cores.

[0008] A plurality of optical fiber units are collectively stranded outside the center reinforcing part.

[0009] Preferably, the compression elastic body is a PBT loose sleeve.

[0010] Preferably, the high-temperature-resistant material layer is a fluoroplastic sheath layer.

[0011] Preferably, the filling material is a fiber paste.

[0012] Preferably, the gap between the compression-resistant elastic body and the optical fiber is filled with a fiber paste.

[0013] Preferably, the central reinforcing member extends along the length direction of the optical cable.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] (1) The utility model adopts a multi-tube layer structure, has small pitch and compact structure, and can protect the internal optical fiber from being broken due to stress under the above conditions in the extreme case of high-strength tension and high-temperature creep, so as to ensure that communication is not damaged; the multi-tube layer structure can also avoid being broken in the extreme case, because the multi-tube structure can ensure normal communication of other units even if a certain unit is damaged due to uneven stress.

[0016] (2) In the utility model, the optical fiber in the layer-twisted unit composed of the PBT loose sleeve is kept intact in the high-temperature and high-pressure vulcanization process, and in actual use, the optical unit in the optical and electrical composite cable has superior tensile and bending resistance, and there is no case of optical cable damage due to bending and stretching. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a perspective view of the optical cable of the utility model;

[0018] Fig. 2 It is a structural schematic view of the optical cable of the utility model;

[0019] In the drawing: 1, tensile material layer; 2, central reinforcing member; 3, optical fiber; 4, compression-resistant elastic body; 5, high-temperature-resistant material layer; 6, fastening material layer; 7, distinguishing mark line; 8, filling material. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Please refer to Figs. 1-2As shown, the utility model provides a technical scheme: a kind of layer stranding type high temperature resistant high strength optical cable, including multiple optical fiber units, multiple optical fiber units are arranged in tensile material layer 1, the central position of tensile material layer 1 is provided with central reinforcing member 2, multiple optical fiber units are annular array distribution in the periphery of central reinforcing member 2, and optical fiber unit includes multiple optical fibers 3, compression elastic body 4 and high temperature resistant material layer 5, multiple optical fibers 3 are tightly wrapped by compression elastic body 4, high temperature resistant material layer 5 is arranged outside compression elastic body 4, and fastening material layer 6 is arranged outside tensile material layer 1, and fastening material layer 6 is provided with the identification line 7 of distinguishing along the length direction of tensile material layer 1 extension, and the gap between tensile material layer 1 and optical fiber unit, and the gap between optical fiber unit and central reinforcing member 2 is provided with filling material 8;

[0022] Identification line 7 is distinguished so as to facilitate the effective identification of each optical fiber band in optical cable in construction;

[0023] Optical fiber 3 is colored optical fiber;

[0024] The core number of optical fiber 3 is 4 cores, 6 cores, 8 cores, 9 cores, 12 cores, 18 cores, 24 cores, 36 cores or 48 cores;

[0025] Multiple optical fiber units are collectively stranded outside central reinforcing member 2, adopt multi-tube layer stranding structure, have small pitch, compact structure, in the extreme case of high strength tensile and high temperature creep, protect internal optical fiber from being broken due to stress under the above conditions, ensure that communication is not damaged;

[0026] Compression elastic body 4 is PBT loose sleeve, adopts high-strength PBT loose sleeve to wrap, and has good tensile and compression resistance;

[0027] High temperature resistant material layer 5 is fluoroplastic sheath layer, and fluoroplastic sheath layer has very good heat insulation effect.

[0028] Filling material 8 is fiber paste, and has two protection functions of preventing moisture invasion and mechanical buffering.

[0029] Fiber paste is filled in the gap between compression elastic body 4 and optical fiber 3, and has two protection functions of preventing moisture invasion and mechanical buffering.

[0030] Central reinforcing member 2 extends along the length direction of optical cable, and central reinforcing member 2 improves the structural strength of optical cable and improves the bending resistance of optical cable.

[0031] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A stranded high-temperature resistant and high-strength optical cable, characterized in that, The device includes multiple optical fiber units, which are inserted into a tensile material layer (1). A central reinforcing member (2) is provided at the center of the tensile material layer (1). The multiple optical fiber units are arranged in a ring array around the central reinforcing member (2). Each optical fiber unit includes multiple optical fibers (3), a compressive elastomer (4), and a high-temperature resistant material layer (5). The multiple optical fibers (3) are tightly wrapped by the compressive elastomer (4). The high-temperature resistant material layer (5) is located outside the compressive elastomer (4). A fastening material layer (6) is provided outside the tensile material layer (1). A distinguishing marking line (7) extending along the length direction of the tensile material layer (1) is provided in the fastening material layer (6). Filling material (8) is provided in the gap between the tensile material layer (1) and the optical fiber units, and in the gap between the optical fiber units and the central reinforcing member (2).

2. The stranded high-temperature and high-strength optical cable according to claim 1, characterized in that: The optical fiber (3) is a colored optical fiber.

3. The stranded high-temperature and high-strength optical cable according to claim 1, characterized in that: The optical fiber (3) has 4, 6, 8, 9, 12, 18, 24, 36 or 48 cores.

4. The stranded high-temperature and high-strength optical cable according to claim 1, characterized in that: Multiple optical fiber units are twisted together on the outside of the central reinforcement (2).

5. The stranded high-temperature and high-strength optical cable according to claim 1, characterized in that: The compressive elastomer (4) is a PBT loose sleeve.

6. The stranded high-temperature and high-strength optical cable according to claim 1, characterized in that: The high-temperature resistant material layer (5) is a fluoroplastic sheath layer.

7. A stranded high-temperature and high-strength optical cable according to claim 1, characterized in that: The filler material (8) is a fiber paste.

8. The stranded high-temperature and high-strength optical cable according to claim 1, characterized in that: The gap between the compressive elastomer (4) and the optical fiber (3) is filled with fiber paste.

9. A stranded high-temperature and high-strength optical cable according to claim 1, characterized in that: The central reinforcing member (2) extends along the length of the optical cable.

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