CN212515143U

CN212515143U - Silicon core pipe for optical cable

Info

Publication number: CN212515143U
Application number: CN202020705506.3U
Authority: CN
Inventors: 赵成方
Original assignee: Zhejiang Bangde Pipe Industry Co ltd
Current assignee: Zhejiang Bangde Pipe Industry Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-02-09
Anticipated expiration: 2030-04-30

Abstract

The utility model discloses a silicon core tube for optical cables, which comprises an outer tube with a hollow structure; and a lubricating layer fixedly connected with the inside of the outer tube; the buffer cylinders are fixedly connected with the outer wall of the outer pipe, the number of the buffer cylinders is multiple, the buffer cylinders are in an annular array along the circumference of the cross section of the outer ring, cavities are formed in the buffer cylinders, and an opening is formed in one end, far away from the outer pipe, of each buffer cylinder; and the hose is fixedly connected with one end, far away from the outer pipe, of the buffering cylinder, the hose is provided with a through hole, the through hole is communicated with the opening, when external compression is applied, the buffering cylinder is internally provided with a cavity, the buffering cylinder shrinks inwards, air in the cavity is discharged from the opening and the through hole, and the crumple deformation of the buffering cylinder absorbs pressure, so that the outer pipe and the optical cable in the outer pipe are protected, and the effect of prolonging the service life of the optical cable is obtained.

Description

Silicon core pipe for optical cable

Technical Field

The utility model belongs to the technical field of the optical cable, especially, relate to a silicon core pipe for optical cable.

Background

With the rapid development of optical cable communication, the demand of silicon core pipes for protecting optical cables is more and more, the existing silicon core pipe is a composite pipeline with a silica gel solid lubricant on the inner wall and high-density polyethylene on the outer pipe, so that the optical cables are not scratched when being repeatedly extracted. However, the existing silicon core pipe is easy to transmit pressure to the optical cable when being exposed to external pressure in a laying environment, so that the service life of the optical cable is shortened after deformation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a silicon core pipe for optical cable aims at solving among the prior art silicon core pipe and transmits pressure for the optical cable when receiving external pressure easily, leads to the problem of the problem that life shortens after the optical cable warp.

In order to achieve the purpose, the silicon core tube for the optical cable comprises an outer tube with a hollow structure; and a lubricating layer fixedly connected with the inner wall of the outer pipe; the buffer cylinders are fixedly connected with the outer wall of the outer pipe, the number of the buffer cylinders is multiple, the buffer cylinders are in an annular array along the circumference of the cross section of the outer ring, a cavity is formed in each buffer cylinder, and one end, far away from the outer pipe, of each buffer cylinder is provided with an opening; and the hose is fixedly connected with one end, far away from the outer pipe, of the buffer cylinder body, a through hole is formed in the hose, and the through hole is communicated with the opening.

The buffering cylinder is in a round table shape, the diameter of one end, far away from the outer tube, of the buffering cylinder is smaller than that of the other end of the buffering cylinder, when the buffering cylinder is pressed, the collapsing direction is from one end with a small diameter to one end with a large diameter, air in the buffering cylinder is discharged to the outside, and the energy absorption effect is achieved.

The through hole is in a reaming shape, the diameter of one end, far away from the buffering column body, of the through hole is larger than that of the other end of the through hole, exhaust of the through hole can be accelerated, and collapse energy absorption time is shortened.

Wherein, the silicon core pipe still includes the filter screen, the filter screen sets up in the opening, leads to the filter screen and can avoid debris to plug up the cavity.

The silicon core pipe further comprises a memory metal strip, the memory metal strip is embedded into the buffer column body, and the buffer column body can recover the shape under the action of the memory metal strip after being deformed through the memory metal strip.

The memory metal strip comprises a first section and a second section, the first section is embedded into the hose, the second section is embedded into the buffer column, the first section and the second section are integrally formed, and round corners between the first section and the second section are in transition, so that the metal strip is prevented from breaking the hose in a wrong way when being pressed.

The second section is in a circular truncated cone shape, so that all directions of the buffering cylinder are supported by the memory metal strip, and the shape recovery capability of the buffering cylinder is enhanced.

The utility model discloses a silicon core pipe for optical cable receives outside when oppressing, and the inside cavity that has of buffering cylinder, the inside shrink of buffering cylinder follow opening and through-hole with the inside air of cavity discharge, and the deformation absorption pressure of collapsing through the buffering cylinder realizes protecting outer tube and the optical cable in the outer tube, obtains extension optical cable life's effect.

Drawings

Fig. 1 is a cross-sectional view of a silicon core tube of embodiment 1 of the present invention;

FIG. 2 is a front isometric view of a silicon core tube of the present invention;

FIG. 3 is a schematic cross-sectional view of a silicon core tube according to the present invention;

FIG. 4 is a schematic structural view of the silicon core tube of the present invention in a disassembled state;

fig. 5 is a cross-sectional view of an embodiment 2 of a silicon core tube according to the present invention;

FIG. 6 is an enlarged partial view of FIG. 5;

in the figure: 100-silicon core tube, 10-outer tube, 20-lubricating layer, 30-buffer cylinder, 31-cavity, 311-opening, 40-hose, 41-through hole, 50-filter screen, 60-memory metal strip, 61-first section and 62-second section.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Example 1, referring to fig. 1 and 4, a silicon core tube 100 for an optical cable includes an outer tube 10 made of high density polyethylene, the inner wall of the outer tube 10 has a lubricating layer 20 fixedly connected thereto, the lubricating layer 20 is made of solid lubricant silica gel, and the outer tube 10 and the lubricating layer 20 are manufactured by a plastic extruder synchronous extrusion compounding process. The outer side of the outer tube 10 is provided with a plurality of groups of buffer cylinders 30 which are connected with the outer tube 10 in a gluing way, the plurality of groups of buffer cylinders 30 are uniformly distributed along the axial direction of the outer tube 10, each group of buffer cylinders 30 is six, the buffer cylinders 30 are made of rubber materials and have elasticity, when being pressed, the buffer cylinders can provide buffer protection for the inner outer tube 10 and the optical cable, a cavity 31 is arranged inside the buffer cylinders 30, one end of the cavity 31 facing the outer tube 10 is closed, one end of the cavity 31 far away from the outer tube 10 is provided with an opening 311, one end of the buffer cylinders 30 far away from the outer tube 10 is provided with a hose 40 which is formed by integral hot molding, the hose 40 connects the plurality of buffer cylinders 30, and the hose 40 is provided with a through hole 41 communicated with the opening 311; the buffer cylinder 30, the inner cavity 31 and the through hole 41 are both in the shape of a circular truncated cone, and one end of the circular truncated cone facing the outer tube 10 is a large-diameter end; a filter screen 50 is embedded in the through hole 41 of the hose 40, and the filter screen 50 is provided with small holes for air exhaust; when the optical cable is pressed from the outside, the buffer cylinder 30 is internally provided with the cavity 31, the buffer cylinder 30 contracts inwards, air in the cavity 31 is discharged from the opening 311 and the through hole 41, and the optical cable in the outer tube 10 and the outer tube 10 is protected by absorbing pressure through the crumple deformation of the buffer cylinder 30, so that the effect of prolonging the service life of the optical cable is achieved.

Embodiment 2, please refer to fig. 5 and 6, the silicon core tube 100 in this embodiment has substantially the same structure as that in embodiment 1, except that a memory metal strip 60 is embedded inside the buffer cylinder 30, the memory metal strip 60 is made of an iron-based alloy, the memory metal strip 60 includes a first section 61 and a second section 62, the first section 61 is embedded in the hose 40, the second section 62 is embedded in the buffer cylinder 30, a joint between the first section 61 and the second section 62 adopts a rounded transition to avoid the memory metal strip 60 from puncturing the hose 40 under pressure, the first section 61 and the second section 62 are both in a flared circular truncated cone shape to support the buffer cylinder 30 at all angles, when the buffer cylinder 30 and the memory metal strip 60 are crushed, and finally the memory metal strip 60 returns to its shape with the buffer cylinder 30 at a proper temperature to meet the next buffer protection, the effect of prolonging the service life of the internal optical cable is obtained.

The utility model discloses a use method: the optical cable is penetrated into the outer tube 10, the lubricating layer 20 in the outer tube 10 can prevent the optical cable from being scratched, then the outer tube 10 is exposed and laid according to a set design route, the outer surface of the outer tube 10 is provided with the buffering cylinders 30 fixedly connected with the outer tube, gaps among the buffering cylinders 30 are connected through the hoses 40, foreign matters are prevented from being clamped among the buffering cylinders 30, and when pressure in the inward direction is applied, air in the cavities 31 in the buffering cylinders 30 is discharged from the openings 311 and the through holes 41. The impact force of the gas in the reverse direction, the elasticity of the buffer column 30 and the collapse energy absorption of the buffer column 30 balance the pressure together, and the effect of isolating and protecting the inner outer tube 10 and the optical cable in the outer tube 10 is achieved.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims

1. A silicon core tube for optical cables is characterized in that:

an outer tube comprising a hollow structure;

and a lubricating layer fixedly connected with the inner wall of the outer pipe;

the buffer column bodies are fixedly connected with the outer wall of the outer pipe, the number of the buffer column bodies is multiple, the buffer column bodies are in an annular array along the circumference of the cross section of the outer pipe, a cavity is formed in each buffer column body, and one end, far away from the outer pipe, of each buffer column body is provided with an opening;

and the hose is fixedly connected with one end, far away from the outer pipe, of the buffer cylinder body, a through hole is formed in the hose, and the through hole is communicated with the opening.

2. The silica core tube for optical cable according to claim 1, wherein the buffer cylinder has a truncated cone shape, and a diameter of one end thereof away from the outer tube is smaller than a diameter of the other end thereof.

3. The silica core tube for optical cable according to claim 2, wherein the through hole is formed in a hole-enlarged shape, and a diameter of one end of the through hole, which is far from the buffer cylinder, is larger than a diameter of the other end of the through hole.

4. The silica core tube for an optical cable of claim 3, wherein the silica core tube further comprises a screen, the screen being disposed within the opening.

5. The silica core tube for optical cable of claim 2, wherein the silica core tube further comprises a memory metal strip, and the memory metal strip is embedded in the buffer cylinder.

6. The silica core tube for an optical cable according to claim 5, wherein the memory metal strip includes a first section and a second section, the first section is embedded in the hose, the second section is embedded in the buffer cylinder, the first section and the second section are integrally formed, and the first section and the second section are in a round corner transition.

7. The silica core tube for an optical cable of claim 6, wherein the second section is in the shape of a truncated cone.