CN114236692B

CN114236692B - Optical fiber fusion point protection device

Info

Publication number: CN114236692B
Application number: CN202111590566.0A
Authority: CN
Inventors: 罗瑞龙; 吴瑜; 宋婷婷; 王彪; 张锦飞; 罗高生; 王芳; 姜哲
Original assignee: Shanghai Ocean University
Current assignee: Shanghai Ocean University
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2023-05-26
Anticipated expiration: 2041-12-23
Also published as: CN114236692A

Abstract

The invention relates to an optical fiber fusion point protection device, which comprises an outer protection cover fixed on an optical fiber package of a relay module and an inner protection cover fixed on an optical fiber package of a submersible, wherein the outer protection cover and the inner protection cover are mutually sleeved; the relay module optical fiber and the submersible optical fiber respectively penetrate through the outer protective cover and the inner protective cover to be welded to form a welding point, and a heat shrinkage tube is sleeved at the welding point; the heat shrinkage tube is sleeved with a clamping piece, and the side wall of the clamping piece is provided with an annular clamping groove; the inner protection cover is internally clamped with a plurality of fan ring diaphragms, and the inner rings of the fan ring diaphragms are clamped in the clamping grooves. According to the optical fiber fusion point protection device, the two protection covers are mutually sleeved to form the space for protecting the fusion point, the fusion point clamps the plurality of fan-shaped annular diaphragms by using the clamping pieces and is located in the protection space, and the water environment in the protection space is basically stable in the laying process. The membrane is clamped in the protection space, and the fusion point can be prevented from falling into the optical fiber package of the submersible, so that the optical fiber is safer and more stable in the use process.

Description

Optical fiber fusion point protection device

Technical Field

The invention relates to the field of diving equipment, in particular to an optical fiber fusion point protection device.

Background

Fiber optic remote control is a common technical means for large depth, especially full sea depth diving equipment. When the traditional optical fiber remote control submersible works, an optical fiber package is respectively arranged on the relay module and the submersible, and the optical fibers extracted between the relay module and the submersible are protected through a cable guiding hose and a bell mouth. The two are simultaneously laid to the appointed depth, then the relay module is separated from the submersible, and meanwhile, the cable guiding hose is sequentially unwound according to the preset sequence until the horn mouth is pulled out for separation, so that the safety of the optical fiber cable in the separation process is protected.

The relay module is in communication with the submersible through optical fiber connection, and the extracted optical fiber is directly exposed in seawater, so that the outer layer of the optical fiber is relatively safe due to the protective layer. The optical fiber fusion point between the opposite optical fiber packages becomes the weakest link of the whole path due to the peeling of the outer protective layer, so that the damage easily occurs in the process of carrying out laying and separating of the relay module carrying submersible, the optical fiber connection is interrupted, and the underwater operation task is further influenced.

Disclosure of Invention

Accordingly, it is necessary to provide a safe and stable optical fiber fusion-splice protection device against the above-mentioned problems.

An optical fiber fusion point protection device comprises an outer protection cover fixed on an optical fiber package of a relay module and an inner protection cover fixed on an optical fiber package of a submersible, wherein the outer protection cover and the inner protection cover are mutually sleeved; the relay module optical fiber and the submersible optical fiber respectively penetrate through the outer protective cover and the inner protective cover to be welded to each other to form a welding point, and a heat shrinkage tube is sleeved at the welding point; the clamping piece is sleeved on the heat shrinkage tube, and an annular clamping groove is formed in the side wall of the clamping piece; the inner protection cover is internally clamped with a plurality of fan ring diaphragms, and the inner rings of the fan ring diaphragms are clamped in the clamping grooves.

Further, the bottom of the outer protective cover is opened, the top of the outer protective cover is fixed on the relay module optical fiber package, a through hole for the relay module optical fiber to pass through is formed in the top of the outer protective cover, and the through hole is concentric with a relay module optical fiber package outlet.

Further, the top opening of the inner protective cover, the bottom is fixed on the submersible fiber package, and the bottom is provided with a through hole for the submersible fiber to pass through, and the through hole is concentric with the submersible fiber package outlet.

Furthermore, the one side that the safety cover was laminated with the optic fibre package is equipped with the fillet in through-hole department.

Further, the through hole of the inner bottom surface of the inner protective cover is provided with a chamfer to form a conical surface, and the clamping piece is attached to the conical surface.

Further, the clamping piece is in an annular structure, a groove is formed in the inner ring of the clamping piece, an elastic ring is embedded in the groove, and the elastic ring protrudes out of the groove.

Furthermore, the elastic ring is made of elastic material, and the density of the elastic ring is less than that of seawater.

Further, the elastic ring is positioned at the middle upper part of the heat shrinkage tube.

Further, the fan ring membrane is a semicircular membrane.

Furthermore, the protective cover is made of transparent materials.

According to the optical fiber fusion point protection device, the two protection covers are mutually sleeved to form the space for protecting the fusion point, the fusion point clamps the plurality of fan-shaped annular diaphragms by using the clamping pieces and is located in the protection space, and the water environment in the protection space is basically stable in the laying process. The membrane is clamped in the protection space, and the fusion point can be prevented from falling into the optical fiber package of the submersible, so that the optical fiber is safer and more stable in the use process.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a protection device;

FIG. 2 is a schematic view of a part of the structure of the protection device;

FIG. 3 is a schematic view of a first state structure of the protection device during use;

fig. 4 is a schematic structural diagram of a second state of the protection device in use.

In the figure: 10. a mother ship; 20. a relay module; 30. a submersible; 40. a hooking device; 100. a relay module optical fiber package; 110. an outer protective cover; 120. a relay module optical fiber; 200. a submersible fiber optic bag; 210. an inner protective cover; 220. a submersible fiber; 300. a heat shrinkage tube; 400. a clamping piece; 500. a membrane; 600. an elastic ring.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1 and 2, in one embodiment, an optical fiber fusion splice protection device includes an outer protective cover 110 fixed to a relay module optical fiber package 100 and an inner protective cover 210 fixed to a submersible optical fiber package 200, which are coupled to each other; the relay module optical fiber 120 and the submersible optical fiber 220 respectively pass through the outer protective cover 110 and the inner protective cover 210 to be welded with each other to form a welding point, and the welding point is sleeved with a heat shrinkage tube 300; after the two sections of optical fiber outer protective layers are peeled off, the two sections of optical fiber outer protective layers are welded together, and the welding points are wrapped by the heat shrink tube 300, so that the bending resistance of the optical fiber is enhanced. The heat shrinkage tube 300 is sleeved with a clamping piece 400, and the side wall of the clamping piece 400 is provided with an annular clamping groove; the inner protection cover 210 is internally clamped with a plurality of fan ring diaphragms 500, and inner rings of the fan ring diaphragms 500 are clamped in the clamping grooves. Wherein the inner and outer shields 110 are nested with each other to form an interior space that protects the fiber optic fusion splice, which space, although unsealed, maintains a substantially stable aqueous environment within the interior.

In the optical fiber fusion point protection device, the two protection covers are mutually sleeved to form a space for protecting the fusion point, the fusion point clamps the plurality of fan-shaped annular diaphragms 500 by using the clamping pieces 400, the fusion point is located in the protection space, and the water environment in the protection space is basically stable in the laying process. Because the membrane 500 is clamped in the protection space and the fusion point can be prevented from falling into the submersible fiber package 200, the fiber is safer and more stable in the use process.

In this embodiment, the bottom of the outer protective cover 110 is opened, the top is fixed on the fiber package 100 of the relay module, and a through hole for the fiber 120 of the relay module to pass through is formed on the top, and the through hole is concentric with the outlet of the fiber package 100 of the relay module. The inner protection cover 210 has a top opening, a bottom fixed to the submersible fiber package 200, and a through hole for the submersible fiber 220 to pass through, which is concentric with the outlet of the submersible fiber package 200. The balance of the structure of the device is kept stable.

In this embodiment, the one side that the safety cover was laminated with the optic fibre package is equipped with the fillet in through-hole department. Is used for protecting the optical fiber and preventing the outer protective layer from being damaged in the extraction process.

In this embodiment, the through hole on the inner bottom surface of the inner protective cover 210 is provided with a chamfer to form a conical surface, and the clip 400 is attached to the conical surface. Similar to a horn mouth, the fusion joint is convenient to separate.

In this embodiment, the clip 400 is disposed in an annular structure, the inner ring of the clip 400 is provided with a groove, the elastic ring 600 is embedded in the groove, and the elastic ring 600 protrudes out of the groove. For close fitting with heat shrink tubing 300.

In this embodiment, the elastic ring 600 is made of an elastic material and has a density smaller than that of seawater. The dead weight of the fusion point in water is reduced, the whole density and the motion state of the fusion point are basically consistent with those of the free optical fiber section with the help of the elastic ring 600, the fusion point can be prevented from falling down, ordered cable laying is realized, and the safety of the fusion point in and after the separation process is protected.

In this embodiment, the elastic ring 600 is located at the upper position in the heat shrinkage tube 300. Because the clamping piece 400 is positioned upwards and the gravity center is positioned downwards, the balance effect is achieved, and the welding point can be kept in a stable state in the laying process, so that the safety is improved.

In this embodiment, the fan ring membrane 500 is a semicircular ring membrane 500. Only two semicircular ring membranes 500 are required at this time.

In this embodiment, the protective cover is made of a transparent material. Such as ABS (Acrylonitrile Butadiene Styrene, acrylonitrile-butadiene-styrene copolymer) or plexiglas, etc., to facilitate the observation of the internal conditions.

As shown in fig. 3 and 4, in use, the relay module 20 and the submersible vehicle 30 are connected by the hooking device 40, and the mother ship 10 simultaneously deploys the relay module 20 and the submersible vehicle 30 to a predetermined depth in the sea. The hitch may perform a unhooking action electronically, hydraulically, or otherwise, to separate the relay module 20 from the submersible vehicle 30. Wherein the fiber package 100 of the relay module is fixed on the relay module 20, and the outlet end is downward. The submersible fiber package 200 is fixed on the submersible 30 with the outlet end up. The two optical fiber packages are a pair, and are respectively internally provided with tens of kilometers of micro optical fibers, and the diameter of each optical fiber is about 0.5 millimeter. So that less force is required to withdraw the optical fiber. When the relay module 20 is separated from the submersible vehicle 30, the protective covers which are mutually sleeved are opened; after the fusion point is pulled away from the protective cover, the membrane 500 is separated from the fusion point under the pushing of gravity and water flow.

The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. The optical fiber fusion point protection device is characterized by comprising an outer protection cover fixed on an optical fiber package of a relay module and an inner protection cover fixed on an optical fiber package of a submersible, wherein the outer protection cover and the inner protection cover are mutually sleeved; the relay module optical fiber and the submersible optical fiber respectively penetrate through the outer protective cover and the inner protective cover to be welded to each other to form a welding point, and a heat shrinkage tube is sleeved at the welding point; the clamping piece is sleeved on the heat shrinkage tube, and an annular clamping groove is formed in the side wall of the clamping piece; the inner protection cover is internally clamped with a plurality of fan ring diaphragms, and the inner rings of the fan ring diaphragms are clamped in the clamping grooves.

2. The optical fiber fusion splice protection device of claim 1, wherein the outer protective cover has a bottom opening, a top portion secured to the relay module fiber package, and a through hole formed in the top portion for the relay module fiber to pass therethrough, the through hole being concentric with the relay module fiber package outlet.

3. The optical fiber fusion splice protection device according to claim 2, wherein the inner protective cover has a top opening, a bottom fixed to the submersible fiber package, and a through hole for the submersible fiber to pass through, the through hole being concentric with the submersible fiber package outlet.

4. The optical fiber fusion splice protection device according to claim 3, wherein a fillet is provided at the through hole on the surface of the protective cover attached to the optical fiber package.

5. The optical fiber fusion-splice protection device according to claim 3, wherein a chamfer is formed at the through hole of the inner bottom surface of the inner protective cover to form a conical surface, and the clamping piece is attached to the conical surface.

6. The optical fiber fusion-splice protection device according to claim 1, wherein the clamping piece is arranged in an annular structure, a groove is formed in an inner ring of the clamping piece, an elastic ring is embedded in the groove, and the elastic ring protrudes out of the groove.

7. The fiber fuse protector of claim 6, wherein the elastic ring is made of an elastic material and has a density less than sea water.

8. The optical fiber fusion splice protection device of claim 6, wherein the elastomeric ring is positioned at an upper middle position in the heat shrink tube.

9. The optical fiber fusion splice protection device of claim 1, wherein the fanning strip is a semicircular strip.

10. The optical fiber fusion splice protection device of claim 1, wherein the inner protective cover and the outer protective cover are each made of a transparent material.