CN217213235U - Optical fiber fusion point protection device - Google Patents
Optical fiber fusion point protection device Download PDFInfo
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- CN217213235U CN217213235U CN202220677191.5U CN202220677191U CN217213235U CN 217213235 U CN217213235 U CN 217213235U CN 202220677191 U CN202220677191 U CN 202220677191U CN 217213235 U CN217213235 U CN 217213235U
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- optical fiber
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- fiber fusion
- protection tube
- protection
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Abstract
The utility model provides an optical fiber fusion splice protection device, including optical fiber fusion splice pipe and protection tube, optical fiber fusion splice pipe cover is established the outside of optical fiber fusion splice point, the protection tube includes the inner protection tube of establishing the optical fiber fusion splice pipe outside and the outer protection tube of establishing the inner protection tube outside of cover, the inner wall of inner protection tube is laminated with the outer wall of optical fiber fusion splice pipe, be provided with the annular channel between the inner wall of outer protection tube and the outer wall of inner protection tube, through set up cement mortar layer in the annular channel, make cement mortar layer and inner protection tube, outer protection tube be linked into an organic whole, thereby form the tubulose shell that is used for protecting optical fiber fusion splice point, can utilize the good characteristic of cement mortar self compressive capacity to bear the pressure, can utilize the tubulose shell to carry out partial pressure again, total bearing capacity is good, be difficult to conquassation, the protecting effect is good, size rule, application scope is wide, receive the influence of change little, the reliability is good.
Description
Technical Field
The utility model belongs to the technical field of the optical fiber protection, concretely relates to optical fiber fusion splice point protection device.
Background
Along with the more and more high attention degree to the building safety, the number of sensors used on public buildings is continuously increased, most of the sensors adopt optical fibers for data transmission, during construction, the optical fibers are inevitably cut and welded to meet the requirement of optical fiber arrangement, after the optical fibers are welded, the welding points are fragile, slight stress can cause the disconnection of the optical fiber welding points, in order to solve the problem, most of the optical fiber welding points are protected by adopting optical cable joint boxes, most of the existing optical cable joint boxes are made of plastic materials, such as the optical cable joint box disclosed in Chinese patent CN2580458Y, when the optical cable joint boxes are used, because the materials have poor compression resistance, partial pressure cannot be realized through spherical or tubular design, the total pressure bearing capacity is poor, when the optical cable joint boxes are subjected to larger external force, the optical cable joint boxes are easily crushed, and the disconnection of the optical fiber welding points is caused, the protection effect is not good, and when optic fibre was laid for buryying, because the size of optical cable joint box is irregular, need set up great square hole and just can bury the optical cable joint box to it is not suitable for, and bury the back, the humiture change is big, and the optical cable joint box is easy ageing, is difficult to form firm durable protective housing in the concrete, and when long-term the use, the reliability is not good.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art's shortcoming, providing an optical fiber splice point protection device that bearing capacity is good, the protection is effectual, application scope is wide, the good reliability.
In order to achieve the above object, the present invention provides a protection device for fusion splice point, including:
the optical fiber fusion pipe is sleeved outside the optical fiber fusion point;
the protection tube comprises an inner protection tube and an outer protection tube, the inner protection tube is sleeved on the outer side of the optical fiber fusion splicing tube, the outer protection tube is sleeved on the outer side of the inner protection tube, the inner wall of the inner protection tube is attached to the outer wall of the optical fiber fusion splicing tube, and an annular channel is arranged between the inner wall of the outer protection tube and the outer wall of the inner protection tube;
and a cement mortar layer is arranged in the annular channel, and the cement mortar layer, the inner protection tube and the outer protection tube are connected into a whole to form a tubular shell for protecting the optical fiber fusion point.
Preferably, the protection tube is made of a metal material.
Further preferably, the protection tube is a stainless steel tube.
Further preferably, the length of the outer protection tube is greater than the length of the inner protection tube, and both ends of the inner protection tube are located inside the outer protection tube.
Further preferably, the length of the cement mortar layer is equal to the length of the outer protection pipe, and two end portions of the cement mortar layer are flush with two end portions of the outer protection pipe.
Preferably, the protection tube is further provided with a heat shrink tube for sealing and waterproofing.
Further preferably, the heat shrinkable tube comprises an inner heat shrinkable tube sleeved on the outer wall of the inner protection tube and an outer heat shrinkable tube sleeved on the outer wall of the outer protection tube, two ends of the inner heat shrinkable tube are heat shrunk to block a gap between the end of the inner protection tube and the end of the optical fiber fusion-spliced tube, and two ends of the outer heat shrinkable tube are heat shrunk to block a gap between the end of the outer protection tube and the end of the cement mortar layer.
Preferably, the cement mortar layer is made of waterproof cement mortar.
Further preferably, the wall thickness of the cement mortar layer is 50% -60% of the inner diameter of the outer protection pipe.
Further preferably, the optical fiber fusion-spliced tube is fused integrally with the optical fiber.
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
the utility model provides an optical fiber fusion splice protection device, including optical fiber fusion splice pipe and protection tube, optical fiber fusion splice pipe cover is established the outside of optical fiber fusion splice point, the protection tube includes the inner protection tube of establishing the optical fiber fusion splice pipe outside and the outer protection tube of establishing the inner protection tube outside of cover, the inner wall of inner protection tube is laminated with the outer wall of optical fiber fusion splice pipe, be provided with the annular channel between the inner wall of outer protection tube and the outer wall of inner protection tube, through set up cement mortar layer in the annular channel, make cement mortar layer and inner protection tube, outer protection tube be linked into an organic whole, thereby form the tubulose shell that is used for protecting optical fiber fusion splice point, can utilize the good characteristic of cement mortar self compressive capacity to bear the pressure, can utilize the tubulose shell to carry out partial pressure again, total bearing capacity is good, be difficult to conquassation, the protecting effect is good, size rule, application scope is wide, receive the influence of change little, and the reliability is good.
Drawings
Fig. 1 is a schematic cross-sectional view of a preferred embodiment of the present invention.
Wherein: 10. an optical fiber fusion point; 20. fusion splicing of the optical fibers to the tubes; 30. an inner protection tube; 40. an outer protection tube; 50. a cement mortar layer; 60. an internal heat shrink tube; 70. an outer heat shrink tube.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more easily understand the advantages and features of the present invention, and to make clear and definite definitions of the protection scope of the present invention.
As shown in fig. 1, the utility model provides an optical fiber fusion point protection device, include: the optical fiber fusion splicing pipe comprises an optical fiber fusion splicing pipe 20, a protection pipe, a cement mortar layer 50 and a heat shrinkable pipe, wherein the optical fiber fusion splicing pipe 20 is sleeved outside an optical fiber fusion splicing point 10, the optical fiber fusion splicing pipe 20 extends along the axial direction of optical fibers, the protection pipe comprises an inner protection pipe 30 sleeved outside the optical fiber fusion splicing pipe 20 and an outer protection pipe 40 sleeved outside the inner protection pipe 30, the inner wall of the inner protection pipe 30 is attached to the outer wall of the optical fiber fusion splicing pipe 20, the inner protection pipe 30 is a stainless steel pipe with the length of 300mm, the inner diameter of 6mm and the wall thickness of 1mm, the outer protection pipe 40 is a stainless steel pipe with the length of 350mm, the inner diameter of 16mm and the wall thickness of 4mm, an annular channel is arranged between the inner wall of the outer protection pipe 40 and the outer wall of the inner protection pipe 30, waterproof cement mortar is filled in the annular channel, the cement mortar layer 50 is formed after the waterproof cement mortar is solidified, and the cement mortar layer 50 is integrally connected with the inner protection pipe 30 and the outer protection pipe 40, a tubular housing for protecting the fusion-spliced points 10 of the optical fibers is formed.
The advantage that sets up like this lies in, can enough utilize the good characteristic of cement mortar compressive capacity itself to carry out the pressure-bearing, can utilize tubular shell to carry out the partial pressure again, and total pressure-bearing capacity is good, is difficult to by the conquassation, and the protection is effectual, and size rule, application scope are wide, and it is little to receive the influence of humiture change, and the good reliability.
In this embodiment, the optical fiber fusion-spliced tube 20, the inner protection tube 30, the outer protection tube 40 and the heat shrinkable tube are coaxially disposed, both end portions of the inner protection tube 30 are located inside the outer protection tube 40, both end portions of the outer protection tube 40 exceed the inner protection tube 30 by the same length, the cement mortar layer 50 has the same length as that of the outer protection tube 40, 350mm, the wall thickness of the cement mortar layer 50 is 9mm, and both end portions of the cement mortar layer 50 are flush with both end portions of the outer protection tube 40.
The heat shrinkable tube is arranged on the protection tube and plays a role of sealing and waterproofing, the heat shrinkable tube is a heat shrinkable tube with glue, concretely, the heat shrinkable tube comprises an inner heat shrinkable tube 60 sleeved on the outer wall of the inner protection tube 30 and an outer heat shrinkable tube 70 sleeved on the outer wall of the outer protection tube 40, the inner diameter of the inner heat shrinkable tube 60 after being shrunk is smaller than 7mm, so that the inner heat shrinkable tube 60 can be tightly sleeved on the inner protection tube 30, the two ends of the inner heat shrinkable tube 60 are sealed and blocked a gap between the end of the inner protection tube 30 and the end of the optical fiber fusion splicing tube 20 after being shrunk, the inner diameter of the outer heat shrinkable tube 70 after being shrunk is smaller than 20mm, so that the outer heat shrinkable tube 70 can be tightly sleeved on the outer protection tube 40, and the two ends of the outer heat shrinkable tube 70 are sealed and blocked a gap between the end of the column outer protection tube 40 and the end of the cement mortar layer 50 after being shrunk,
in other embodiments, the optical fiber fusion splicing tube 20 is integrated with the optical fiber fusion splicing, which has the advantage of being able to bear the axial tensile stress on the optical fiber through the optical fiber fusion splicing tube, thereby avoiding the stress on the optical fiber fusion splicing point.
The utility model provides an optical fiber splice point protection device is applicable to the protection that receives the great regional optical fiber splice point of pressure, if press water delivery tunnel strain optical cable to lay, bury between the two lining of tunnel that strain optical cable formula is laid, the tunnel punches to bury and should become optical cable formula and lay, pile foundation monitoring buries to become optical cable formula and lays, bury formula pipeline temperature measurement optical cable and lay and bulky concrete temperature measurement optical cable and lay etc. have high use value and social value.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. An optical fiber fusion splice protection device comprising:
the optical fiber fusion pipe is sleeved outside the optical fiber fusion point;
the protection tube comprises an inner protection tube and an outer protection tube, the inner protection tube is sleeved on the outer side of the optical fiber fusion splicing tube, the outer protection tube is sleeved on the outer side of the inner protection tube, the inner wall of the inner protection tube is attached to the outer wall of the optical fiber fusion splicing tube, and an annular channel is arranged between the inner wall of the outer protection tube and the outer wall of the inner protection tube;
the method is characterized in that:
and a cement mortar layer is arranged in the annular channel, and the cement mortar layer, the inner protection tube and the outer protection tube are connected into a whole to form a tubular shell for protecting the optical fiber fusion point.
2. An optical fiber fusion splice protection device according to claim 1, characterized in that: the protection tube is made of metal materials.
3. An optical fiber fusion splice protection device according to claim 2, characterized in that: the protection tube is a stainless steel tube.
4. An optical fiber fusion splice protection device according to claim 3, wherein: the length of the outer protection tube is larger than that of the inner protection tube, and two end parts of the inner protection tube are located in the outer protection tube.
5. An optical fiber fusion splice protection device according to claim 3, wherein: the length of the cement mortar layer is equal to that of the outer protection pipe, and two end parts of the cement mortar layer are flush with two end parts of the outer protection pipe.
6. An optical fiber fusion splice protection device according to claim 1, characterized in that: and the protective tube is also provided with a heat-shrinkable tube with a sealing and waterproof function.
7. An optical fiber fusion splice protection device according to claim 6, wherein: the heat-shrinkable tube comprises an inner heat-shrinkable tube sleeved on the outer wall of the inner protection tube and an outer heat-shrinkable tube sleeved on the outer wall of the outer protection tube, two ends of the inner heat-shrinkable tube are shrunk and then seal a gap between the end of the inner protection tube and the end of the optical fiber fusion welding tube, and two ends of the outer heat-shrinkable tube are shrunk and then seal a gap between the end of the outer protection tube and the end of the cement mortar layer.
8. An optical fiber fusion splice protection device according to claim 1, characterized in that: the cement mortar layer is made of waterproof cement mortar.
9. An optical fiber fusion splice protection device according to claim 8, wherein: the wall thickness of the cement mortar layer is 50% -60% of the inner diameter of the outer protection pipe.
10. An optical fiber fusion splice point protection apparatus according to any one of claims 1 to 9, characterized in that: the optical fiber fusion pipe and the optical fiber are fused into a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220677191.5U CN217213235U (en) | 2022-03-25 | 2022-03-25 | Optical fiber fusion point protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220677191.5U CN217213235U (en) | 2022-03-25 | 2022-03-25 | Optical fiber fusion point protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217213235U true CN217213235U (en) | 2022-08-16 |
Family
ID=82757937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220677191.5U Active CN217213235U (en) | 2022-03-25 | 2022-03-25 | Optical fiber fusion point protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217213235U (en) |
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2022
- 2022-03-25 CN CN202220677191.5U patent/CN217213235U/en active Active
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