CN217332939U

CN217332939U - 8-shaped self-supporting flame-retardant weather-resistant optical cable with central beam tube

Info

Publication number: CN217332939U
Application number: CN202122941502.2U
Authority: CN
Inventors: 杜长军; 李新华
Original assignee: Dongguan Tw Scie Co ltd
Current assignee: Dongguan Tw Scie Co ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-08-30
Anticipated expiration: 2031-11-26

Abstract

The utility model discloses a 8-shaped self-supporting flame-retardant weather-resistant optical cable with a central bundle tube, which comprises a sleeve, a first water-blocking tape, a buffer layer, a second water-blocking tape, a steel wire reinforcement, an outer sheath, a flame-retardant layer, a weather-resistant layer, two nonmetal reinforcements and a plurality of optical fibers; the sleeve is filled with fiber paste; the first water-blocking tape is coated outside the sleeve; the buffer layer is coated outside the first water-blocking tape; the second water-blocking tape is coated outside the buffer layer; set up steel wire reinforcement and two nonmetal reinforcements through the cooperation, it is bigger to make this product can bear weight, and set up first water-blocking tape and second water-blocking tape through the cooperation, in order to realize dual water-blocking, effectively promote the waterproof performance of product, set up the buffer layer simultaneously, can play fine cushioning effect to external impact, protect optic fibre better, thereby improve the signal transmission quality, furthermore, through setting up fire-retardant layer and resistant layer of waiting, make this product possess fine fire resistance and weatherability, be favorable to prolonging the life of product, satisfy the needs that use.

Description

8-shaped self-supporting flame-retardant weather-resistant optical cable with central beam tube

Technical Field

The utility model belongs to the technical field of the optical cable technique and specifically relates to indicate a fire-retardant resistant optical cable of central beam tube 8 font self-supporting.

Background

Optical fiber cables (optical fiber cables) are manufactured to meet optical, mechanical, or environmental performance specifications and are telecommunication cable assemblies that utilize one or more optical fibers disposed in a surrounding jacket as the transmission medium and that may be used individually or in groups. The optical cable is mainly composed of optical fibers (thin glass filaments like hair), a plastic protective sleeve and a plastic sheath, and metals such as gold, silver, copper and aluminum are not contained in the optical cable, so that the optical cable generally has no recycling value. The optical cable is a communication line which is formed by a certain number of optical fibers into a cable core in a certain mode, is externally coated with a sheath, and is also coated with an outer protective layer for realizing optical signal transmission.

The 8-shaped self-supporting optical cable with the central beam tube is one of the main structural forms of the existing optical cable, and generally comprises the central beam tube, an armor layer, a reinforcing element, a filler and a sheath. However, the current 8-shaped self-supporting optical cable with a central beam tube has unreasonable structural design, insufficient bearable weight, insufficient waterproofness, flame retardance and weather resistance, and can not meet the use requirement. Therefore, there is a need to develop a solution to the above problems.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a central beam tube 8-shaped self-supporting fire-retardant weather-resistant optical cable, which can effectively solve the problems of insufficient bearing weight and insufficient waterproof performance, fire-retardant performance and weather-resistant performance of the existing central beam tube 8-shaped self-supporting optical cable.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a central beam tube 8-shaped self-supporting flame-retardant weather-resistant optical cable comprises a sleeve, a first water-blocking tape, a buffer layer, a second water-blocking tape, a steel wire reinforcement, an outer sheath, a flame-retardant layer, a weather-resistant layer, two nonmetal reinforcements and a plurality of optical fibers; the sleeve is filled with fiber paste; the first water-blocking tape is coated outside the sleeve; the buffer layer is coated outside the first water-blocking tape; the second water-blocking tape is coated outside the buffer layer; the steel wire reinforcing piece is positioned outside the second water blocking belt and is parallel to the axial direction of the sleeve; the outer sheath is 8-shaped and comprises a first main body part, a second main body part and a sling part which is integrally connected between the first main body part and the second main body part, the first main body part is coated outside the second water-blocking belt, the second main body part is coated outside the steel wire reinforcing piece, the outer surface of the outer sheath is coated by the flame-retardant layer, and the outer surface of the flame-retardant layer is coated by the weather-resistant layer; the two nonmetal reinforcing pieces are embedded, molded and fixed in the first main body part, are radially and symmetrically arranged relative to the sleeve and are parallel to the axial extension of the sleeve; the optical fibers are arranged in the sleeve and embedded in the fiber paste.

As a preferred scheme, a plurality of reinforcing rings are fixed in the outer sheath in an insert molding manner, the reinforcing rings are arranged at intervals along the axial direction of the outer sheath, and each reinforcing ring surrounds the sleeve, the first water-blocking tape, the buffer layer, the second water-blocking tape, the steel wire reinforcing piece, the two non-metal reinforcing pieces and the optical fibers.

As a preferable scheme, the first water-blocking tape and the second water-blocking tape are both semiconductor water-blocking tapes.

Preferably, the buffer layer is made of a foam material.

As a preferable scheme, the outer sheath is made of PE.

Preferably, the non-metal reinforcement is made of FRP material.

Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, can know by above-mentioned technical scheme:

set up steel wire reinforcement and two nonmetal reinforcements through the cooperation, make this product can bear weight bigger, and set up first water-blocking tape and second water-blocking tape through the cooperation, with realize dual water-blocking, effectively promote the waterproof performance of product, set up the buffer layer simultaneously, can play fine cushioning effect to external impact, protect optic fibre better, thereby improve signal transmission quality, in addition, through setting up fire-retardant layer and resistant time layer, make this product possess fine fire resistance and weatherability, be favorable to prolonging the life of product, satisfy the needs that use.

To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a cross-sectional view of a preferred embodiment of the present invention.

Description of the figures:

11. sleeve 12, first water-blocking tape

13. Buffer layer 14 and second water-blocking tape

15. Steel wire reinforcement 16, fiber paste

20. Outer sheath 21, first main body part

22. Second body section 23 and suspender section

31. Flame retardant layer 32, weatherable layer

33. Non-metallic strength member 34 and optical fiber

35. A reinforcement ring.

Detailed Description

Referring to fig. 1, a specific structure of a preferred embodiment of the present invention is shown, which includes a sleeve 11, a first water-blocking tape 12, a buffer layer 13, a second water-blocking tape 14, a steel wire reinforcement 15, an outer sheath 20, a flame-retardant layer 31, a weather-resistant layer 32, two non-metal reinforcements 33, and a plurality of optical fibers 34.

The sleeve 11 is filled with fiber paste 16; the first water-blocking tape 12 is coated outside the sleeve 11; the buffer layer 13 is coated outside the first water-blocking tape 12; the second water-blocking tape 14 is coated outside the buffer layer 13; the wire reinforcement 15 is located outside the second water blocking tape 14 in parallel with the axial direction of the jacket 11. In this embodiment, the sleeve 11 is a corrugated pipe, and the first water-blocking tape 12 and the second water-blocking tape 14 are both semiconductor water-blocking tapes, and have good waterproof performance; the buffer layer 13 is made of a foam material, has a good buffer effect, and better protects the optical fiber 34.

The outer sheath 20 is 8-shaped and includes a first main body 21, a second main body 22 and a sling portion 23 integrally connected between the first main body 21 and the second main body 22, wherein the first main body 21 covers the second water-blocking tape 14, and the second main body 22 covers the steel wire reinforcement 15. In this embodiment, the outer sheath 20 is made of PE, the outer diameter of the first body portion 21 is larger than that of the second body portion 22, and the sling portion 23 is flat.

The flame-retardant layer 31 covers the outer surface of the outer sheath 20, and the weather-resistant layer 32 covers the outer surface of the flame-retardant layer 31; the two non-metal reinforcing parts 33 are fixed in the first main body part 21 in an embedding and forming mode, and the two non-metal reinforcing parts 33 are radially and symmetrically arranged relative to the sleeve 11 and are parallel to the axial extension of the sleeve 11; the plurality of optical fibers 34 are provided in the ferrule 11 and embedded in the fiber paste 16. In this embodiment, the non-metal reinforcement 33 is made of FRP material, and has the characteristics of light weight and high strength, and the number of the optical fibers 34 is 2-24.

And a plurality of reinforcing rings 35 are fixed in the outer sheath 20 in an insert molding manner, the reinforcing rings 35 are arranged at intervals along the axial direction of the outer sheath 20, each reinforcing ring 35 surrounds the sleeve 11, the first water-blocking tape 12, the buffer layer 13, the second water-blocking tape 14, the steel wire reinforcing part 15, the two nonmetal reinforcing parts 33 and the plurality of optical fibers 34, and the reinforcing rings 35 are steel wires or bulletproof wires, so that all components in the product are organically combined and can bear larger weight.

The product can be used for outdoor overhead, long-distance communication and interoffice communication, and has wide application range.

The utility model discloses a design focus lies in: set up steel wire reinforcement and two nonmetal reinforcements through the cooperation, make this product can bear weight bigger, and set up first water-blocking tape and second water-blocking tape through the cooperation, with realize dual water-blocking, effectively promote the waterproof performance of product, set up the buffer layer simultaneously, can play fine cushioning effect to external impact, protect optic fibre better, thereby improve signal transmission quality, in addition, through setting up fire-retardant layer and resistant time layer, make this product possess fine fire resistance and weatherability, be favorable to prolonging the life of product, satisfy the needs that use.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a fire-retardant resistant optical cable of waiting of 8 font self-supporting of center beam tube which characterized in that: the waterproof cable comprises a sleeve, a first waterproof belt, a buffer layer, a second waterproof belt, a steel wire reinforcement, an outer sheath, a flame-retardant layer, a weather-resistant layer, two nonmetal reinforcement pieces and a plurality of optical fibers; the sleeve is filled with fiber paste; the first water-blocking tape is coated outside the sleeve; the buffer layer is coated outside the first water-blocking tape; the second water-blocking tape is coated outside the buffer layer; the steel wire reinforcing piece is positioned outside the second water blocking belt and is parallel to the axial direction of the sleeve; the outer sheath is 8-shaped and comprises a first main body part, a second main body part and a sling part which is integrally connected between the first main body part and the second main body part, the first main body part is coated outside the second water-blocking belt, the second main body part is coated outside the steel wire reinforcing piece, the flame-retardant layer coats the outer surface of the outer sheath, and the weather-resistant layer coats the outer surface of the flame-retardant layer; the two nonmetal reinforcing pieces are embedded, molded and fixed in the first main body part, are radially and symmetrically arranged relative to the sleeve and are parallel to the axial extension of the sleeve; the optical fibers are arranged in the sleeve and embedded in the fiber paste.

2. The center tube 8-shaped self-supporting flame-retardant weather-resistant optical cable according to claim 1, wherein: a plurality of reinforcing rings are fixed in the outer sheath in an embedding forming mode, the reinforcing rings are arranged at intervals along the axial direction of the outer sheath, and each reinforcing ring surrounds the sleeve, the first water blocking tape, the buffer layer, the second water blocking tape, the steel wire reinforcing piece, the two nonmetal reinforcing pieces and the optical fibers.

3. The center tube 8-shaped self-supporting flame-retardant weather-resistant optical cable according to claim 1, wherein: the first water-blocking tape and the second water-blocking tape are both semiconductor water-blocking tapes.

4. The center tube 8-shaped self-supporting flame-retardant weather-resistant optical cable according to claim 1, wherein: the buffer layer is made of foaming materials.

5. The center tube 8-shaped self-supporting flame-retardant weather-resistant optical cable according to claim 1, wherein: the outer sheath is made of PE.

6. The center tube 8-shaped self-supporting flame-retardant weather-resistant optical cable according to claim 1, wherein: the non-metal reinforcement is made of FRP materials.