CN215340468U

CN215340468U - Be applied to optical fiber fusion structure on tunnel and cable testing bridge

Info

Publication number: CN215340468U
Application number: CN202121578674.1U
Authority: CN
Inventors: 秦一涛; 秦振东; 韦冬青
Original assignee: Zhejiang Zhendong Photoelectric Technology Co ltd
Current assignee: Zhejiang Zhendong Photoelectric Technology Co ltd
Priority date: 2021-07-12
Filing date: 2021-07-12
Publication date: 2021-12-28
Anticipated expiration: 2031-07-12

Abstract

The utility model provides an optical fiber fusion structure applied to a tunnel and a cable bridge, which comprises an optical fiber supporting tube tightly sleeved on the outer side of the circumference of an optical fiber fusion point, an internal connection tube with two ends respectively sleeved on the outer side of the circumference of an optical fiber sheath positioned on two sides of the optical fiber fusion point, and an external connection tube sleeved on the outer side of the circumference of the internal connection tube and with two ends extending to the outer side of two ends of the internal connection tube, wherein two ends of the internal connection tube are clamped on the optical fiber sheath through clamping structures, and sealing structures are arranged between two ends of the external connection tube and the optical fiber sheath. The problem of the solvent part size of the optical fiber fusion of solution application on tunnel and crane span structure big, the butt fusion is not fixed etc. has structural easy to fix, and the size is little, has advantages such as waterproof, tensile moreover.

Description

Be applied to optical fiber fusion structure on tunnel and cable testing bridge

Technical Field

The utility model belongs to the technical field of optical fiber fusion, and particularly relates to an optical fiber fusion structure applied to a tunnel and a cable bridge.

Background

With the development of economy, the proportion of power cables in a power grid is increasing day by day, and meanwhile, the fault rate of the power cables is high, so that in order to ensure that a power system is in a normal operation state, the temperature of each part of the power cables needs to be monitored in real time, and the healthy operation of a power supply system is ensured. The current ideal monitoring scheme is to use a distributed optical fiber temperature measurement system to monitor the temperature of each part of the power cable.

In order to meet the technical requirements of power cable temperature measurement, optical cables need to be connected sometimes, but in specific operation, the connection between the optical cables often has many problems, for example, the optical fiber fusion splice is not fixed well, the size of the optical fiber fusion splice part is large, and in some harsh environments, the optical fiber fusion splice part can have a wading problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provides an optical fiber fusion splicing structure applied to a tunnel and a cable bridge.

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

the utility model provides a be applied to fiber fusion structure on tunnel and cable testing bridge, includes closely cup joints the fiber support pipe in fiber fusion point circumference outside, and the interconnection that cup joints in the fiber sheath circumference outside that is located fiber fusion point both sides outside respectively at both ends is taken over to and cup joint the outer joint pipe that all extends to the interconnection both ends outside in interconnection taking over circumference outside and both ends, the both ends of interconnection taking over are all pressed from both sides tightly in fiber sheath through pressing from both sides tight structure, all have seal structure between the both ends of outer joint pipe and the fiber sheath.

In the optical fiber fusion splicing structure applied to the tunnel and the cable bridge, the sealing structure comprises a sealant filled between the outer connecting pipe and the optical fiber sheath.

In the optical fiber fusion splicing structure applied to the tunnel and the cable bridge, the sealing structure comprises two gaskets which are arranged oppositely, and the sealant is filled between the two gaskets, the optical fiber sheath and the outer connecting pipe.

In the optical fiber fusion splicing structure applied to the tunnel and the cable bridge, the outer connecting pipe is provided with the glue injection hole, and the two gaskets are respectively positioned on two sides of the glue injection hole, so that the sealant injected from the glue injection hole can be filled between the two gaskets, the optical fiber sheath and the outer connecting pipe.

In the optical fiber fusion splicing structure applied to the tunnel and the cable bridge, the clamping structure is a copper sleeve clamped on the circumferential outer side of the inner connecting pipe through a wire clamping clamp.

In the optical fiber fusion splicing structure applied to the tunnel and the cable bridge, the optical fiber supporting tube is a hot-melt optical fiber supporting tube, and the optical fiber supporting tube is heated by a hot-melt machine and then is fused at the optical fiber fusion splicing point so as to be tightly sleeved outside the optical fiber fusion splicing point.

In the optical fiber fusion splicing structure applied to the tunnel and the cable bridge, the inner connecting pipe and the outer connecting pipe are both made of stainless steel materials.

In the optical fiber fusion splicing structure applied to the tunnel and the cable bridge, the stainless steel material is SUS304 stainless steel material.

In the optical fiber fusion splicing structure applied to the tunnel and the cable bridge, the diameter of the inner connecting pipe is 3.0-4.0mm, and the diameter of the outer connecting pipe is 5.0-6.0 mm.

In the optical fiber fusion splicing structure applied to the tunnel and the cable bridge, the diameter of the inner connecting pipe is 3.6mm, and the diameter of the outer connecting pipe is 5.5 mm.

The utility model has the advantages that: the problem of use the solvent part size of the optical fiber fusion of tunnel and crane span structure on big, the butt fusion is not fixed etc is solved, it is structural easy to fix to have, and the size is little, has advantages such as waterproof, tensile moreover.

Drawings

FIG. 1 is a cross-sectional view of an optical fiber fusion splicing structure according to the present invention;

FIG. 2 is a schematic external view of the optical fiber fusion splicing structure of the present invention.

Description of the drawings: an optical fiber fusion point 1; an optical fiber support tube 2; an inner connecting pipe 3; an outer connecting tube 4; glue injection holes 41; a clamping structure 5; an optical fiber sheath 7; a sealant 8; a gasket 9.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 and fig. 2, the present embodiment provides an optical fiber fusion splicing structure applied to a tunnel and a cable tray, including an optical fiber support tube 2 tightly sleeved outside a circumference of an optical fiber fusion splicing point 1, an inner connection tube 3 having two ends respectively sleeved outside a circumference of an optical fiber sheath 7 located at two sides of the optical fiber fusion splicing point 1, and an outer connection tube 4 sleeved outside a circumference of the inner connection tube 3 and having two ends both extending to outside two ends of the inner connection tube 3.

Specifically, the optical fiber support tube 2 is a hot-melt optical fiber support tube, and the optical fiber support tube 2 is welded and fixed at the optical fiber fusion point 1 after being heated by a hot-melting machine, and is tightly sleeved outside the circumference of the optical fiber fusion point 1, so that the purpose of protecting the bare optical fiber fusion point 1 is achieved.

Both ends of the inner connecting tube 3 are clamped to the optical fiber sheath 7 by means of a copper sleeve as a clamping structure 5. A copper sleeve having an outer diameter of 4.8mm, a wall thickness of 0.3mm and a length of 10mm may be used, and the copper sleeve may be clamped to the circumferential outer side of the inner connecting tube 3 using a wire clamp to clamp the inner connecting tube 3 to the optical fiber sheath 7. According to the scheme, the inner connecting pipe 3 bears the tensile force of the optical fiber at the optical fiber fusion point 1, so that the stress can be guaranteed to be borne by the inner connecting pipe 3, and the stress of the optical fiber fusion point 1 is prevented. The specific type of copper sleeve may be selected by one skilled in the art as desired, such as a copper sleeve having an axial split that gradually decreases during clamping of the copper sleeve by the wire clamp.

Preferably, a sealing structure is provided between both ends of the outer connecting tube 4 and the optical fiber sheath 7. And each sealing structure comprises two gaskets 9 arranged oppositely and sealing glue filled between the outer connecting pipe 4, the optical fiber sheath 7 and the two gaskets 9. The outer connecting pipe 4 is provided with a glue injection hole 41, and the two gaskets 9 are respectively positioned at two sides of the glue injection hole 41, so that the sealant 8 injected from the glue injection hole 41 can be filled between the two gaskets 9, the optical fiber sheath 7 and the outer connecting pipe 4. The sealing glue can adopt 703 soft glue, and a sealing structure is arranged between the outer connecting pipe 4 and the optical fiber sheath 7, so that the sealing effect at the welding point can be ensured, the welding position has waterproof capability, and the optical fiber cable can normally work even under severe environment.

Preferably, the inner connecting pipe 3 and the outer connecting pipe are made of SUS304 stainless steel. The SUS304 stainless steel material has strong corrosion resistance, and can ensure that the optical fiber works in severe environment.

Preferably, the inner connecting tube 3 has a diameter of 3.6mm and the outer connecting tube 4 has a diameter of 5.5mm, which ensures that the size of the fusion structure is sufficiently small.

When the optical fiber fusion splicing device is put into use, the inner connecting pipe 3, the outer connecting pipe 4, the copper sleeve, the gasket 9 and the like can be sleeved outside the optical fiber sheath 7 in advance, then a fusion splicer is used for fusing two optical fibers, then the hot-melt optical fiber supporting pipe 2 is sleeved on the optical fiber fusion splicing point 1, and then the optical fiber supporting pipe 2 is heated and fused on the hot-melt splicer so as to be tightly sleeved on the circumferential outer side of the optical fiber fusion splicing point 1. And then the inner connecting pipe 3 is pulled to a specific position to complete the clamping work of the copper sleeve, and then the outer connecting pipe 4 is pulled to a specific position to complete the glue injection. In addition, the gasket 9 can be fixedly sleeved at a specific position on the optical fiber sheath in advance, and the outer connecting pipe 4 is pulled so that two ends of the outer connecting pipe 4 are respectively sleeved on the circumferential outer sides of the four gaskets in a pairwise manner.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Although fiber fusion splice point 1 is used more herein; an optical fiber support tube 2; an inner connecting pipe 3; an outer connecting tube 4; glue injection holes 41; a clamping structure 5; an optical fiber sheath 7; a sealant 8; gasket 9, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The utility model provides a be applied to fiber fusion structure on tunnel and cable testing bridge, its characterized in that, including closely cup jointing fiber support pipe (2) in the fiber fusion point (1) circumference outside, the both ends cup joint in interconnection connecting pipe (3) in fiber sheath (7) circumference outside that is located fiber fusion point (1) both sides respectively to and cup joint outer connecting pipe (4) that connecting pipe (3) circumference outside and both ends all extend to inner connecting pipe (3) both ends outside including, the both ends of interconnection connecting pipe (3) are all pressed from both sides tightly in fiber sheath (7) through pressing from both sides tight structure (5), all have seal structure between the both ends of outer connecting pipe (4) and fiber sheath (7).

2. The fusion splicing structure for optical fibers used in tunnels and cable trays according to claim 1, wherein said sealing means comprises a sealant (8) filled between said outer connecting tube (4) and said optical fiber sheath (7).

3. The fusion splicing structure for optical fibers used in tunnels and cable trays according to claim 2, wherein said sealing structure comprises two gaskets (9) disposed opposite to each other, and said sealant (8) is filled between the two gaskets (9), the optical fiber sheath (7) and the outer connecting tube (4).

4. The optical fiber fusion splicing structure applied to the tunnel and the cable bridge frame as claimed in claim 3, wherein the outer connecting pipe (4) is provided with a glue injection hole (41), and the two gaskets (9) are respectively located at two sides of the glue injection hole (41), so that the sealant (8) injected from the glue injection hole (41) can be filled between the two gaskets (9), the optical fiber sheath (7) and the outer connecting pipe (4).

5. The fusion splicing structure for optical fibers used in tunnels and cable trays according to claim 1, wherein said clamping structure (5) is a copper sleeve clamped by a wire clamp onto the circumferential outer side of the inner connecting tube (3).

6. The optical fiber fusion splicing structure applied to the tunnel and the cable bridge stand according to claim 1, wherein the optical fiber support tube (2) is a hot-melt optical fiber support tube, and the optical fiber support tube (2) is fused at the optical fiber fusion splicing point (1) after being heated by a hot-melting machine so as to be tightly sleeved outside the optical fiber fusion splicing point (1) in the circumferential direction.

7. The fusion splicing structure for optical fibers used in tunnels and cable trays according to claim 1, wherein said inner connecting tube (3) and said outer connecting tube are made of stainless steel.

8. The fusion splicing structure for optical fibers used in tunnels and cable trays of claim 7, wherein said stainless steel material is SUS304 stainless steel.

9. The fusion splicing structure for optical fibers used in tunnels and cable trays according to claim 1, wherein said inner connecting tube (3) has a diameter comprised between 3.0 and 4.0mm and said outer connecting tube (4) has a diameter comprised between 5.0 and 6.0 mm.

10. The fusion splicing structure of optical fibers for tunnels and cable trays according to claim 9, wherein said inner connecting tube (3) has a diameter of 3.6mm and said outer connecting tube (4) has a diameter of 5.5 mm.