CN116338881A - Optical fiber coiling assembly for branching device and submarine optical cable passive branching device - Google Patents

Abstract

The application relates to a fiber optic coiling assembly for a splitter and a submarine optical cable passive splitter, the fiber optic coiling assembly comprising: the optical fiber coiling unit comprises a transition storage tray, optical fiber storage trays respectively positioned at two ends of the transition storage tray, and optical fiber bending limiters positioned at the upper side and the lower side of the transition storage tray and the optical fiber storage tray and connecting the transition storage tray and the optical fiber storage tray into a whole; the optical fiber fixing unit comprises an optical fiber supporting block fixed on the optical fiber bending limiter, a plurality of optical fiber heat-shrinkable tubes arranged on the optical fiber supporting block, and an optical fiber fixing belt fixed on the surface of the optical fiber supporting block and used for fixing the optical fiber heat-shrinkable tubes on the outer surface of the optical fiber supporting block. The optical fiber storage tray and the transition storage tray are connected by adopting the upper optical fiber bending limiter and the lower optical fiber bending limiter, the quantity of the transition storage tray and the optical fiber bending limiter can be modularly expanded according to the optical fiber demand capacity, and the optical fiber coiling unit can meet the storage demand of large-capacity optical fibers.

Description

Optical fiber coiling assembly for branching device and submarine optical cable passive branching device

Technical Field

The application relates to the technical field of submarine optical cable splitters, in particular to an optical fiber coiling assembly for a splitter and a submarine optical cable passive splitter.

Background

Sea cable is used as the most important carrier of international communication traffic, and carries international communication traffic in more than 95% of countries worldwide. In recent years, with the vigorous development of industries such as 5G business, internet of things, cloud computing service, data centers and the like, the submarine optical cable system is gradually evolved towards the directions of larger optical fiber capacity, more flexible networking, lower cost and higher compatibility.

Currently, although the used submarine passive branching device can realize the communication between the main route and the branch route multipoint line, the storage capacity of the optical fiber is smaller and is usually not more than 48 cores, and the increasing demand of the submarine communication signal transmission with large capacity is difficult to meet.

In addition, the development of flexible networking direction is still to be improved, and the optical fiber branching function between the main route and the branch route guided by special functions can not be satisfied by structurally satisfying the requirements of conducting or insulating the light path of the main route and the branch route.

In addition, the current submarine passive branching device has larger overall dimension, complex structure and long integration time, so that the whole machine has higher cost and lacks competitive advantage in the similar market; meanwhile, compatibility is difficult to achieve for submarine cable models provided by different submarine cable suppliers.

For the protection mode of passive branch ware dish fine structure, mainly adopt pressure-bearing section of thick bamboo, branch structure and sealing ring to constitute outer protection architecture at present for prevent that a dish fine structure from receiving the influence of high water pressure, but this kind of mode has higher processing, integrated requirement, and is difficult to satisfy normal use in the life-span.

Disclosure of Invention

The embodiment of the application provides an optical fiber coiling component for a splitter and a submarine optical cable passive splitter, which are used for solving the problem that the submarine optical cable passive splitter in the related art is small in optical fiber storage capacity.

A first aspect of embodiments of the present application provides a fiber optic pigtail assembly for a splitter, comprising:

the optical fiber coiling unit comprises a transition storage tray, optical fiber storage trays and optical fiber bending limiters, wherein the optical fiber storage trays are respectively positioned at two ends of the transition storage tray, the optical fiber bending limiters are positioned at the upper side and the lower side of the transition storage tray and the optical fiber storage tray, and the transition storage tray and the optical fiber storage tray are connected into a whole;

the optical fiber fixing unit comprises an optical fiber supporting block fixed on the optical fiber bending limiter, a plurality of optical fiber heat-shrinkable tubes are distributed on the optical fiber supporting block, and an optical fiber fixing belt fixed on the surface of the optical fiber supporting block and used for fixing the optical fiber heat-shrinkable tubes on the outer surface of the optical fiber supporting block.

In some embodiments: the transition storage trays are provided with a plurality of sections, the transition storage trays are fixedly connected through optical fiber bending limiters, and the optical fiber bending limiters are positioned on the upper side and the lower side of two adjacent sections of transition storage trays so as to connect the two adjacent sections of transition storage trays into a whole.

In some embodiments: the optical fiber bending limiter is of a disc-shaped structure, one end, far away from the transition storage tray, of the optical fiber bending limiter is fixedly provided with an optical fiber blocking disc with the diameter larger than that of the optical fiber bending limiter, and the two optical fiber bending limiters positioned on the upper side and the lower side are connected through fasteners and clamp the transition storage tray and the optical fiber storage tray.

In some embodiments: the transition storage tray comprises an H-shaped supporting plate connected with the optical fiber bending limiter and first outer guard plates which are positioned at the left side and the right side of the H-shaped supporting plate and are vertically connected with the H-shaped supporting plate;

the optical fiber storage tray comprises a flange, two parallel and spaced separation plates are vertically arranged at one end, close to the transition storage tray, of the flange, and a second outer guard plate is vertically arranged at the outer side of each separation plate;

and through holes are formed in the flange plate, and fiber penetrating holes which are coaxially arranged with the through holes are formed between the transition storage tray and two optical fiber bending limiters on the upper side and the lower side of the optical fiber storage tray.

In some embodiments: the H-shaped supporting plate and the partition plate are vertically connected with guide posts, the two adjacent guide posts are connected with optical fiber separating sheets in a sliding mode, the fiber fixing unit is located between the two adjacent optical fiber separating sheets, and the end portions of the guide posts are provided with check rings for limiting the optical fiber separating sheets.

In some embodiments: the optical fiber support blocks are of semi-cylindrical structures, the optical fiber heat shrinkage sleeves are parallel to the axes of the optical fiber support blocks and are arranged on the arc surfaces of the optical fiber support blocks, and the optical fiber fixing bands are sleeved on the peripheries of the optical fiber support blocks and fixed on the optical fiber support blocks through fixing strips.

In some embodiments: the optical fiber fixing band comprises an inner optical fiber fixing band sleeved on the periphery of the optical fiber supporting block, and an outer optical fiber fixing band sleeved on the periphery of the inner optical fiber fixing band, wherein a plurality of optical fiber heat-shrinkable sleeves are fixed between the inner optical fiber fixing band and the optical fiber supporting block, and between the inner optical fiber fixing band and the outer optical fiber fixing band.

A second aspect of the embodiments of the present application provides a passive optical fiber splitter for a submarine optical cable, including the optical fiber coiling assembly described in the foregoing embodiments; and

the branch connecting structure comprises a conical middle joint connected with one end of the optical fiber disc fiber assembly, and a counter bore is formed in one end, close to the optical fiber disc fiber assembly, of the conical middle joint;

the conical surface of the conical middle joint is provided with a first connecting pipe and a second connecting pipe which are communicated with the counter bore, and the first connecting pipe and the second connecting pipe are made of conductive materials or insulating materials which are the same as or different from each other;

the one end that first connecting pipe and second connecting pipe kept away from toper intermediate head all is equipped with toper branch joint, the last recess that communicates with first connecting pipe or second connecting pipe of seting up of toper branch joint.

In some embodiments: the main cable inner armor compression joint structure is connected to the other end of the optical fiber coiling component, and the conical branch joint is connected with the branch cable inner armor compression joint structure;

an inner protection structure coated on the peripheries of the main cable inner armor compression joint structure, the optical fiber coiling fiber component, the branch connecting structure and the branch cable inner armor compression joint structure;

the inner protection structure comprises an inner protection steel cylinder sleeved on the outer periphery of the main cable inner armor compression joint structure and the optical fiber coiling and fiber assembly, and an inner branch protection piece sleeved on the outer periphery of the branch connection structure and the outer periphery of the branch cable inner armor compression joint structure, wherein the inner branch protection piece is made of conductive materials or insulating materials.

In some embodiments: the inner protection steel cylinder is fixedly connected with the main cable inner armor compression joint structure through a plurality of pins, and the outer periphery of the inner protection steel cylinder is sleeved with a pressure ring for fixing the pins on the main cable inner armor compression joint structure;

the inner branch protection piece comprises an upper protection sleeve and a lower protection sleeve which are mutually combined, and a cavity for accommodating a branch connection structure and an inner armor compression joint structure of the branch cable is formed between the upper protection sleeve and the lower protection sleeve;

the upper protection sleeve member and the lower protection sleeve member are provided with a plurality of positioning pins which are mutually connected, and the upper protection sleeve member and the lower protection sleeve member are of a Y-shaped structure and are connected into a whole through a plurality of connecting rings.

In some embodiments: the main cable inner armor compression joint structure comprises a conical socket, one end of the conical socket is provided with a threaded hole connected with the main cable sea cable, the other end of the conical socket is provided with a conical hole for accommodating a conical plug, and the conical plug and the conical socket are matched and compressed with an inner armor steel wire of the main cable sea cable;

the tapered hole is internally provided with a gasket and a locknut for pressing the tapered plug, an optical fiber protective sleeve is arranged outside the tapered hole, and an optical fiber protective sleeve fixing clamp for fixing the optical fiber protective sleeve on the tapered socket is arranged outside the tapered hole, and the inner armor compression joint structure of the branch cable is identical to the inner armor compression joint structure of the main cable.

In some embodiments: the heat-shrinkable sleeve is coated on the peripheries of the main cable inner armor compression joint structure, the inner protection structure and the branch cable inner armor compression joint structure;

the main cable outer armor crimp structure is positioned at the periphery of the main cable inner armor crimp structure, and the branch cable outer armor crimp structure is positioned at the periphery of the branch cable inner armor crimp structure;

the outer periphery of the main cable outer armor compression joint structure, the heat shrinkage bush and the outer armor compression joint structure of the branch cable is provided with an outer protection structure.

In some embodiments: the main cable outer armor compression joint structure comprises a conical locking mandrel and a middle locking sleeve matched with the conical locking mandrel for compression joint of the first outer armor steel wire, and an inner partition ring for partitioning the first outer armor steel wire is arranged between the conical locking mandrel and the middle locking sleeve;

an outer locking sleeve for crimping the second outer armor steel wire is connected to one end, far away from the conical locking mandrel, of the middle locking sleeve in a matched mode, and an outer separation ring for separating the second outer armor steel wire is arranged between the middle locking sleeve and the outer locking sleeve;

the outer armor compression joint structure of the branch cable is identical to the outer armor compression joint structure of the main cable.

In some embodiments: the outer protection structure comprises a main cable compression nut in threaded connection with the periphery of the main cable outer armor compression structure and a branch cable compression nut in threaded connection with the periphery of the branch cable outer armor compression structure;

and the outer protection steel cylinder, the outer protection transition piece and the branch connection protection sleeve are sleeved on the periphery of the heat shrinkage sleeve and are sequentially connected.

In some embodiments: the device also comprises a buffer which is connected with the main cable compression nut and used for protecting the main cable submarine cable, and a buffer which is connected with the branch cable compression nut and used for protecting the branch submarine cable.

The beneficial effects that technical scheme that this application provided brought include:

the embodiment of the application provides an optical fiber coiling assembly for a branching device and a submarine optical cable passive branching device, and because the optical fiber coiling assembly is provided with a coiling unit, the coiling unit comprises a transition storage tray, optical fiber storage trays respectively positioned at two ends of the transition storage tray, and optical fiber bending limiters positioned at the upper side and the lower side of the transition storage tray and the optical fiber storage tray, and connecting the transition storage tray and the optical fiber storage tray into a whole; the optical fiber fixing unit comprises an optical fiber supporting block fixed on the optical fiber bending limiter, a plurality of optical fiber heat-shrinkable tubes arranged on the optical fiber supporting block, and an optical fiber fixing belt fixed on the surface of the optical fiber supporting block and used for fixing the optical fiber heat-shrinkable tubes on the outer surface of the optical fiber supporting block.

Therefore, the fiber coiling unit of the fiber coiling assembly is provided with the transition storage tray and the fiber storage tray, the upper and lower two fiber bending limiters are adopted between the fiber storage tray and the transition storage tray to be connected, the quantity of the transition storage tray and the fiber bending limiters can be modularly expanded according to the fiber demand capacity, and the fiber coiling unit can meet the storage demand of large-capacity fibers. The upper and lower sides of the optical fiber storage tray and the transition storage tray can both provide coiling and storage space for the optical fibers, and the optical fiber bending limiters positioned on the upper and lower sides of the transition storage tray and the optical fiber storage tray are used for coiling the optical fibers and protecting the minimum bending radius of the optical fibers.

The fiber fixing unit of the optical fiber coiling assembly is provided with an optical fiber supporting block fixed on an optical fiber bending limiter, a plurality of optical fiber heat-shrinkable tubes are arranged on the optical fiber supporting block, the optical fiber heat-shrinkable tubes are used for protecting optical fibers after fusion, 48 optical fiber heat-shrinkable tubes can be arranged on a single optical fiber supporting block, and the optical fiber coiling assembly at least can meet the capacity requirement of being greater than 144 cores, namely the capacity of a single-side submarine cable optical fiber can reach 96 cores. The optical fiber fixing band is used for fixing the optical fiber heat-shrinkable sleeves on the outer surface of the optical fiber supporting block, and the optical fiber fixing band enables the optical fiber heat-shrinkable sleeves to be firmly fixed on the optical fiber supporting block, so that the optical fiber heat-shrinkable sleeves are regularly distributed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of a fiber optic disc assembly according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of a fiber optic disc assembly according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a transition storage tray and an optical fiber storage tray according to an embodiment of the present application;

FIG. 4 is a schematic diagram of the structure of two fiber bend limiters in the upper and lower embodiments of the present application;

FIG. 5 is a schematic structural diagram of a fiber fixing unit according to an embodiment of the present application;

FIG. 6 is a cross-sectional view of a configuration of a submarine cable passive splitter according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a branch connection structure according to an embodiment of the present application;

fig. 8 is a schematic structural view of an inner armor crimp structure of a main cable according to an embodiment of the present application;

FIG. 9 is a structural cross-sectional view of an inner protective structure according to an embodiment of the present application;

fig. 10 is a schematic structural view of a main cable outer armor crimp structure according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of an outer protection structure according to an embodiment of the present application.

Reference numerals:

100. an optical fiber coiling assembly; 101. a fiber coiling unit; 102. a fiber fixing unit; 110. a transition storage tray; 111. an H-shaped supporting plate; 112. a first outer shield; 120. an optical fiber storage tray; 121. a flange plate; 122. a partition plate; 123. a second outer shield; 124. a through hole;

130. an optical fiber bend limiter; 131. a fiber blocking disc; 132. fiber penetrating holes; 140. a guide post; 141. a retainer ring; 142. an optical fiber separator; 150. an optical fiber support block; 151. an optical fiber heat-shrinkable sleeve; 152. an outer optical fiber fixing band; 153. an inner fiber fixing band; 154. a fixing strip;

200. an inner armor compression joint structure of the main cable; 201. a conical socket; 202. a conical plug; 203. a gasket; 204. a locknut; 205. an optical fiber protective sleeve; 206. an optical fiber protective sleeve fixing clamp; 300. a branch connection structure; 301. a tapered intermediate joint; 302. a first connection pipe; 303. a second connection pipe; 304. a transition piece; 305. a tapered branch joint;

400. an inner armor compression joint structure of the branch cable; 500. an inner protection structure; 501. an inner protection steel cylinder; 502. a pressure ring; 503. an inner branch protector; 504. a positioning pin; 505. a first connection ring; 506. a second connecting ring; 507. a heat-shrinkable sleeve;

600. an outer armor compression joint structure of the main cable; 601. a conical locking mandrel; 602. an inner spacer ring; 603. a middle locking sleeve; 604. an outer spacer ring; 605. an outer locking sleeve; 700. an outer armor compression joint structure of the branch cable; 800. an outer protective structure; 801. a main cable compression nut; 802. an outer protection steel cylinder; 803. an outer protective transition piece; 804. the branch is connected with the protective sleeve; 805. a branch cable compression nut; 900. a buffer; 910. a main cable sea cable; 920. and (5) branching the submarine cable.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.

The embodiment of the application provides an optical fiber coiling component for a splitter and a submarine optical cable passive splitter, which can solve the problem of small optical fiber storage capacity of the submarine optical cable passive splitter in the related art.

Referring to fig. 1 to 5, a first aspect of an embodiment of the present application provides a fiber optic pigtail assembly for a splitter, the fiber optic pigtail assembly 100 comprising:

the optical fiber coiling unit 101, the optical fiber coiling unit 101 comprises a transition storage tray 110, optical fiber storage trays 120 respectively arranged at two ends of the transition storage tray 110, and optical fiber bending limiters 130 arranged at the upper side and the lower side of the transition storage tray 110 and the optical fiber storage tray 120 and connecting the transition storage tray 110 and the optical fiber storage tray 120 into a whole.

The optical fiber storage trays 120 are positioned at two ends of the transition storage tray 110 and are arranged in a straight shape, and the two optical fiber storage trays 120 are fixedly connected with the transition storage tray 110 through the optical fiber bending limiter 130. The optical fiber storage tray 120 and the transition storage tray 110, which are connected to each other, are fixedly connected through the upper and lower optical fiber bending limiters 130 to form a space around the optical fiber bending limiters 130 for coiling and storing optical fibers, thereby improving the optical fiber storage capacity.

The optical fiber fixing unit 102, the optical fiber fixing unit 102 comprises an optical fiber supporting block 150 fixed on the optical fiber bending limiter 130, a plurality of optical fiber heat-shrinkable tubes 151 arranged on the optical fiber supporting block 150, and an optical fiber fixing belt fixed on the surface of the optical fiber supporting block 150 for fixing the plurality of optical fiber heat-shrinkable tubes 151 on the surface of the optical fiber supporting block outer 150.

The optical fiber supporting block 150 is used for providing installation and arrangement space for the optical fiber heat-shrinkable tubes 151, the optical fiber heat-shrinkable tubes 151 are used for protecting the welded optical fibers, the optical fiber fixing band is used for fixing the optical fiber heat-shrinkable tubes 151 on the outer surface of the optical fiber supporting block 150, the optical fiber heat-shrinkable tubes 151 are kept to be orderly arranged on the optical fiber supporting block 150, and the space utilization rate of the optical fiber supporting block 150 is improved.

The fiber coiling unit 101 of the fiber coiling assembly 100 of the embodiment of the present application is provided with a transition storage tray 110 and a fiber storage tray 120, and the fiber storage tray 120 and the transition storage tray 110 are connected by adopting an upper and a lower fiber bending limiters 130. The number of transition storage trays 110 and fiber bend limiters 130 may be modularly expanded according to the fiber demand capacity, so that the fiber coiling unit 101 meets the storage demand of large capacity fibers.

Both the upper and lower sides of the optical fiber storage tray 120 and the transition storage tray 110 can provide coiling and storage space for the optical fibers, and the optical fiber bending limiters 130 located at both the upper and lower sides of the transition storage tray 110 and the optical fiber storage tray 120 serve to coil the optical fibers and to protect the minimum bending radius of the optical fibers.

The fiber fixing unit 102 of the optical fiber coiling assembly 100 is provided with an optical fiber supporting block 150 fixed on an optical fiber bending limiter 130, a plurality of optical fiber heat-shrinkable tubes 151 are arranged on the optical fiber supporting block 150, the optical fiber heat-shrinkable tubes 151 are used for protecting welded optical fibers, and 48 optical fiber heat-shrinkable tubes 151 can be arranged on a single optical fiber supporting block 150.

The application can at least meet the capacity requirement of the optical fiber with the core larger than 144, namely the capacity of the single-side submarine cable optical fiber can reach 96 cores. The optical fiber fixing belts are used for fixing the optical fiber heat-shrinkable sleeves 151 on the outer surface of the optical fiber support block 150 on the surface of the optical fiber support block 150, and the optical fiber fixing belts enable the optical fiber heat-shrinkable sleeves 151 to be firmly fixed on the optical fiber support block 150, so that the optical fiber heat-shrinkable sleeves 151 are regularly distributed.

In some alternative embodiments: referring to fig. 1 to 4, a first aspect of the embodiments of the present application provides an optical fiber coiling fiber assembly for a splitter, in which a transition storage tray 110 of the optical fiber coiling fiber assembly 100 is provided with a plurality of sections, and the number of the transition storage trays 110 is specifically set according to the number of optical fiber cores. And the multi-section transition storage trays 110 are fixedly connected through the optical fiber bending limiter 130, and the optical fiber bending limiter 130 is positioned on the upper side and the lower side of the two adjacent sections of transition storage trays 110 so as to connect the two adjacent sections of transition storage trays 110 into a whole.

The optical fiber bending limiter 130 has a disc-shaped structure, one end of the optical fiber bending limiter 130, which is far away from the transition storage tray 110, is fixedly provided with a fiber blocking tray 131 with a diameter larger than that of the optical fiber bending limiter, two optical fiber bending limiters 130 positioned on the upper side and the lower side of the transition storage tray 110 are connected through fasteners, adjacent transition storage trays 110 and optical fiber storage trays 120 are clamped, and the adjacent transition storage trays 110 are clamped to realize fixed connection.

In some alternative embodiments: referring to fig. 1 to 4, a first aspect of the embodiment of the present application provides an optical fiber coiling fiber assembly for a splitter, and a transition storage tray 110 of the optical fiber coiling fiber assembly 100 includes an 'H' -shaped supporting plate 111 connected with an optical fiber bending limiter 130, and first outer protecting plates 112 positioned at left and right sides of the 'H' -shaped supporting plate 111 and connected perpendicularly to the 'H' -shaped supporting plate 111.

The first outer cover 112 forms an upper space for coiling and storing the optical fiber with the upper surface of the "H" -shaped pallet 111, and the first outer cover 112 forms a lower space for coiling and storing the optical fiber with the lower surface of the "H" -shaped pallet 111. The end of the "H" shaped tray 111 adjacent to the fiber storage tray 120 is also provided with mounting holes for connecting the fiber bend limiters 130.

The optical fiber storage tray 120 includes a flange 121, and one end of the flange 121 near the transition storage tray 110 is vertically provided with two separation plates 122 parallel to each other and spaced apart, and the separation plates 122 are flush with the H-shaped supporting plates 111. The second outer guard 123 is vertically provided on the outer side of the partition plate 122, and the second outer guard 123 is flush with the first outer guard 112.

The second outer cover 123 forms an upper space for coiling and storing the optical fibers with the upper surface of the separation plate 122, and the second outer cover 123 forms a lower space for coiling and storing the optical fibers with the lower surface of the separation plate 122. One end of the partition plate 122 near the H-shaped pallet 111 is provided with a mounting hole to which the optical fiber bending limiter 130 is attached.

The flange 121 is provided with a fiber penetrating hole 124, and a fiber penetrating hole 132 coaxially arranged with the through hole 124 is arranged between the transition storage tray 110 and two fiber bending limiters 130 on the upper side and the lower side of the fiber storage tray 120, and the fiber penetrating hole 132 is used for enabling the optical fiber of the branch submarine cable 920 to enter the submarine cable 910 side.

Guide posts 140 are vertically connected to both upper and lower sides of the H-shaped supporting plate 111 and the separation plate 122, and the guide posts 140 serve to limit a maximum coiling radius of the optical fiber coiled on the optical fiber bending limiter 130. The two adjacent guide posts 140 are slidably connected with optical fiber separating sheets 142, the optical fiber separating sheets 142 are used for separating optical fibers, the fiber fixing unit 102 is located between the two adjacent optical fiber separating sheets 142, and check rings 141 for limiting the optical fiber separating sheets 142 are arranged at the end parts of the guide posts 140 so as to prevent the optical fiber separating sheets 142 from falling out from the guide posts 140.

In some alternative embodiments: referring to fig. 5, a first aspect of the present embodiment provides an optical fiber coiling assembly for a splitter, where an optical fiber support block 150 of the optical fiber coiling assembly 100 has a semi-cylindrical structure, a plurality of optical fiber heat shrinkage sleeves 151 are parallel to an axis of the optical fiber support block 150 and are arranged on an arc surface of the optical fiber support block 150, and an optical fiber fixing band is sleeved on an outer circumference of the optical fiber support block 150 and is fixed on the optical fiber support block 150 through a fixing strip 154.

The optical fiber fixing band comprises an inner optical fiber fixing band 153 sleeved on the periphery of the optical fiber supporting block 150, and an outer optical fiber fixing band 152 sleeved on the periphery of the inner optical fiber fixing band 153, wherein a plurality of optical fiber heat-shrinkable sleeves 151 are fixed between the inner optical fiber fixing band 153 and the optical fiber supporting block 150, and between the inner optical fiber fixing band 153 and the outer optical fiber fixing band 152. The inner optical fiber fixing band 153 and the outer optical fiber fixing band 152 are flexible bands, and the inner optical fiber fixing band 153 and the outer optical fiber fixing band 152 are flexible bands and hooped on the outer circumference of the optical fiber supporting block 150 so as to fix the optical fiber heat shrinkage bush 151 on the optical fiber supporting block 150. The outer circumference of a single fiber support block 150 may be lined with 48-core optical fibers.

Referring to fig. 6 and 7, a second aspect of the embodiments of the present application provides a submarine optical cable passive splitter, comprising the fiber optic spool assembly 100 of the previous embodiments; and

a branch connection structure 300, the branch connection structure 300 including a tapered intermediate connector 301 connected to one end of the optical fiber span fiber assembly 100, the tapered intermediate connector 301 being screwed to the flange 121 of one of the optical fiber storage trays 120. The tapered intermediate connector 301 has a counterbore at the end adjacent the fiber optic pigtail assembly 100 that communicates with the throughbore 124 of the fiber optic pigtail assembly 100 to funnel the optical fibers of the two branch submarine cables 920 into the fiber optic pigtail assembly 100.

The conical surface of the conical middle joint 301 is provided with a first connecting pipe 302 and a second connecting pipe 303 which are communicated with the counter bore, and optical fibers of the two branch submarine cables 920 respectively extend into the optical fiber coiling assembly 100 through the first connecting pipe 302 and the second connecting pipe 303. The first connection pipe 302 and the second connection pipe 303 are made of conductive materials or insulating materials which are the same or different in materials, so that insulation or conduction between the main cable submarine cable 910 and the two branch submarine cables 920 is realized.

The first connecting pipe 302 and the second connecting pipe 303 are respectively provided with a conical branch joint 305 at one end far away from the conical middle joint 301, and the two conical branch joints 305 are correspondingly connected with the two branch submarine cables 920. The tapered branch joint 305 is provided with a groove communicated with the first connecting pipe 302 or the second connecting pipe 303, and the groove is used for guiding the optical fiber of the branch submarine cable 920 to pass in and out.

The ends of the first connection pipe 302 and the second connection pipe 303 remote from the tapered intermediate joint 301 are provided with a transition piece 304, the transition piece 304 being used for the first connection pipe 302, the second connection pipe 303 and the tapered branch joint 305. A step is provided inside the transition piece 304 for connecting the first connection pipe 302 and the second connection pipe 303 in place. The tapered surface of the tapered branch joint 305 is provided with an external thread for connecting the transition piece 304, so as to adjust the installation position of the branch connection structure 300.

Referring to fig. 6 and 8, the embodiment of the present application provides a submarine optical cable passive splitter, which further includes a main cable inner armor crimp structure 200 connected to the other end of the optical fiber coiling assembly 100, and a branch cable inner armor crimp structure 400 connected to the tapered branch joint 305. The main cable inner armor crimp structure 200 is used for connecting the inner armor wires of the main cable submarine cable 910 to connect the main cable submarine cable 910 to the optical fiber reel assembly 100, and the branch cable inner armor crimp structure 400 is connected to the inner armor wires of the branch submarine cable 920 to connect the branch submarine cable 920 to the branch connection structure 300.

And an inner protection structure 500 coated on the outer circumferences of the main cable inner armor crimp structure 200, the optical fiber disc fiber assembly 100, the branch connection structure 300, and the branch cable inner armor crimp structure 400. The inner protection structure 500 includes an inner protection steel cylinder 501 sleeved on the outer circumferences of the main cable inner armor crimp structure 200 and the optical fiber disc assembly 100, and an inner branch protection member 503 sleeved on the outer circumferences of the branch connection structure 300 and the branch cable inner armor crimp structure 400. The inner branch protecting piece 503 is made of conductive material or insulating material, so as to realize insulation or conduction between the main cable submarine cable 910 and the two branch submarine cables 920 respectively.

The inner protection steel cylinder 501 is fixedly connected with the main cable inner armor compression joint structure 200 through a plurality of pins, so that the inner protection steel cylinder 501 is fixed on the periphery of the optical fiber coiling assembly 100 and is used for protecting the optical fiber coiling assembly 100 from being influenced by loads. The outer periphery of the inner protection steel cylinder 501 is sleeved with a pressure ring 502 for fixing the pin on the main cable inner armor compression joint structure 200, and the pressure ring 502 is used for preventing the pin from jumping out of the inner protection steel cylinder 501 and the main cable inner armor compression joint structure 200 and enabling the outer wall surface of the inner protection steel cylinder 501 to be in smooth transition.

The inner branch protection member 503 includes an upper protection sleeve and a lower protection sleeve, which are mutually combined, and both the upper protection sleeve and the lower protection sleeve are hollow Y-shaped structures. The upper and lower protective sleeves are mutually combined to form a cavity for accommodating the branch connecting structure 300 and the inner armor compression joint structure 400 of the branch cable. The inner branch protection member 503 is made of upper and lower protection members which are matched, so that the branch connection structure 300 and the branch cable inner armor compression joint structure 400 can be assembled conveniently.

A plurality of locating pins 504 which are connected with each other are arranged between the upper protection sleeve and the lower protection sleeve, and the locating pins 504 are used for locating the upper protection sleeve and the lower protection sleeve when being mutually matched, so that the matching precision is improved. The upper protection sleeve and the lower protection sleeve are of a Y-shaped structure and are connected into a whole through a plurality of connecting rings. Wherein the coupling rings comprise a first coupling ring 505 near one end of the inner protection steel cylinder 501 and a second coupling ring 506 remote from one end of the inner protection steel cylinder 501. The first and second connection rings 505 and 506 tightly connect the two separate upper and lower protection suites into one body. One end of the inner protective steel cylinder 501 extends into the inner branch protective member 503.

Referring to fig. 6 and 8, an embodiment of the present application provides a submarine optical cable passive branching device, where a main cable inner armor compression joint structure 200 of the submarine optical cable passive branching device includes a conical socket 201, one end of the conical socket 201 is provided with a threaded hole connected with a main cable submarine cable 910, the other end is provided with a conical hole for accommodating a conical plug 202, and the conical plug 202 and the conical socket 201 cooperate to compress an inner armor steel wire of the main cable submarine cable 910.

The gasket 203 and the locknut 204 which are used for pressing the conical plug 202 are arranged in the conical hole, the locknut 204 is in threaded connection with the conical hole, and the inner armor steel wire is clamped between the conical plug 202 and the conical socket 201 by screwing the locknut 204, so that the inner armor steel wire is prevented from loosening. The tapered bore is externally provided with a fiber optic protective sheath 205 and a fiber optic protective sheath retaining clip 206 for securing the fiber optic protective sheath 205 to the tapered receptacle 201. The fiber protective sheath 205 and the fiber protective sheath retaining clip 206 are used to protect the optical fibers of the main cable submarine cable 910 from being cut. The inner armor crimp structure 400 of the branch cable is identical to the inner armor crimp structure 200 of the main cable, and the detailed description thereof will not be repeated.

Referring to fig. 6 and 8 to 11, the embodiment of the present application provides a submarine optical cable passive splitter, which further includes a heat shrinkage sleeve 507 wrapped around the outer circumference of the main cable inner armor crimp structure 200, the inner protection structure 500, and the branch cable inner armor crimp structure 400. Heat shrink 507 is used to seal and insulate fiber optic disc assembly 100.

The heat-shrinkable sleeve 507 includes a first length of heat-shrinkable sleeve heat-shrinkable outside the main cable inner armor crimp structure 200 and the inner protection structure 500. And a second heat-shrinkable sleeve heat-shrinkable outside the inner branch protector 503 and partially overlapping the first heat-shrinkable sleeve. And a third heat-shrinkable sleeve heat-shrinkable outside the branching cable inner armor crimp structure 400 and partially overlapped with the second heat-shrinkable sleeve.

The cable further comprises a main cable outer armor crimp structure 600 positioned at the periphery of the main cable inner armor crimp structure 200 and a branch cable outer armor crimp structure 700 positioned at the periphery of the branch cable inner armor crimp structure 400; the outer periphery of the main cable outer armor crimp structure 600, the heat shrinkage sleeve 507 and the branch cable outer armor crimp structure 700 is provided with an outer protection structure 800.

The main cable outer armor crimping structure 600 comprises a conical locking mandrel 601 and an intermediate locking sleeve 603 which is matched with the conical locking mandrel 601 to crimp the first outer armor steel wire, wherein an inner partition ring 602 for partitioning the first outer armor steel wire is arranged between the conical locking mandrel 601 and the intermediate locking sleeve 603. The tapered locking mandrel 601 and the intermediate locking sleeve 603 clamp the first outer steel sheathing wire between the tapered locking mandrel 601 and the intermediate locking sleeve 603 by pressing against each other. The inner partition ring 602 is sleeved on the periphery of the conical locking mandrel 601, and a plurality of positioning holes penetrating into the first outer armor wires are formed, so that the first outer armor wires are uniformly distributed on the periphery of the conical locking mandrel 601.

An outer locking sleeve 605 for crimping the second outer armor wire is cooperatively connected with one end of the middle locking sleeve 603 far away from the conical locking mandrel 601, and an outer separation ring 604 for separating the second outer armor wire is arranged between the middle locking sleeve 603 and the outer locking sleeve 605. The outer sleeve 605 and the intermediate sleeve 603 clamp the second outer sheathing wire between the outer sleeve 605 and the intermediate sleeve 603 by pressing against each other. The outer spacer 604 is sleeved on the outer periphery of the middle locking sleeve 603 and provided with a plurality of positioning holes penetrating into the second outer armor wires, so that the second outer armor wires are uniformly distributed on the outer periphery of the middle locking sleeve 603. The outer armor crimp structure 700 of the branch cable is identical to the outer armor crimp structure 600 of the main cable, and the detailed description thereof will not be repeated.

The outer protection structure 800 includes a main cable compression nut 801 screwed on the outer circumference of the main cable outer sheath crimp structure 600, and a branch cable compression nut 805 screwed on the outer circumference of the branch cable outer sheath crimp structure 700; and an outer protection steel cylinder 802, an outer protection transition piece 803 and a branch connection protective sleeve 804 which are sleeved on the periphery of the heat shrinkage sleeve 507 and are sequentially connected. The outer protective structure 800 serves as a compression-resistant protection while providing the whole with sufficient mechanical properties. The cable protecting device further comprises a buffer 900 connected with the main cable gland nut 801 and used for protecting the main cable submarine cable 910, and a buffer 900 connected with the branch cable gland nut 805 and used for protecting the branch submarine cable 920, wherein the buffer 900 is used for preventing the submarine cable from being excessively bent under the action of external force.

In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description of the present application and simplification of the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

It should be noted that in this application, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the application to enable one skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (15)

1. A fiber optic tray assembly for a splitter, comprising:

the optical fiber coiling unit (101), the optical fiber coiling unit (101) comprises a transition storage tray (110), optical fiber storage trays (120) respectively positioned at two ends of the transition storage tray (110), and optical fiber bending limiters (130) positioned at the upper side and the lower side of the transition storage tray (110) and the optical fiber storage tray (120) and connecting the transition storage tray (110) and the optical fiber storage tray (120) into a whole;

the optical fiber fixing device comprises an optical fiber fixing unit (102), wherein the optical fiber fixing unit (102) comprises an optical fiber supporting block (150) fixed on an optical fiber bending limiter (130), a plurality of optical fiber heat-shrinkable tubes (151) are arranged on the optical fiber supporting block (150), and an optical fiber fixing band which is fixed on the surface of the optical fiber supporting block (150) and fixes the optical fiber heat-shrinkable tubes (151) on the outer surface of the optical fiber supporting block (150).

2. A fiber optic pigtail assembly for a splitter as claimed in claim 1, wherein:

the transition storage trays (110) are provided with a plurality of sections, the transition storage trays (110) are fixedly connected through optical fiber bending limiters (130), and the optical fiber bending limiters (130) are positioned on the upper side and the lower side of two adjacent sections of transition storage trays (110) so as to connect the two adjacent sections of transition storage trays (110) into a whole.

3. A fiber optic pigtail assembly for a splitter as claimed in claim 1 or claim 2, wherein:

the optical fiber bending limiter (130) is of a disc-shaped structure, one end, far away from the transition storage tray (110), of the optical fiber bending limiter (130) is fixedly provided with a fiber blocking disc (131) with the diameter larger than that of the optical fiber bending limiter (130), the two optical fiber bending limiters (130) located on the upper side and the lower side are connected through fasteners, and the transition storage tray (110) and the optical fiber storage tray (120) are clamped.

4. A fiber optic pigtail assembly for a splitter as claimed in claim 1 or claim 2, wherein:

the transition storage tray (110) comprises an H-shaped supporting plate (111) connected with the optical fiber bending limiter (130), and first outer guard plates (112) which are positioned at the left side and the right side of the H-shaped supporting plate (111) and are vertically connected with the H-shaped supporting plate (111);

the optical fiber storage tray (120) comprises a flange plate (121), two separation plates (122) which are parallel to each other and are arranged at intervals are vertically arranged at one end, close to the transition storage tray (110), of the flange plate (121), and a second outer guard plate (123) is vertically arranged at the outer side of the separation plate (122);

through holes (124) are formed in the flange plate (121), and fiber penetrating holes (132) which are coaxially arranged with the through holes (124) are formed between the transition storage tray (110) and two fiber bending limiters (130) on the upper side and the lower side of the fiber storage tray (120).

5. A fiber optic pigtail assembly for a splitter as claimed in claim 4, wherein:

guide posts (140) are vertically connected to the H-shaped supporting plate (111) and the partition plate (122), optical fiber separation sheets (142) are connected to the two adjacent guide posts (140) in a sliding mode, the fiber fixing unit (102) is located between the two adjacent optical fiber separation sheets (142), and check rings (141) for limiting the optical fiber separation sheets (142) are arranged at the end portions of the guide posts (140).

6. A fiber optic pigtail assembly for a splitter as claimed in claim 1 or claim 2, wherein:

the optical fiber support blocks (150) are of semi-cylindrical structures, a plurality of optical fiber heat shrinkage sleeves (151) are parallel to the axis of the optical fiber support blocks (150) and are arranged on the arc surfaces of the optical fiber support blocks (150), and the optical fiber fixing bands are sleeved on the peripheries of the optical fiber support blocks (150) and fixed on the optical fiber support blocks (150) through fixing strips (154).

7. A fiber optic pigtail assembly for a splitter as defined in claim 6, wherein:

the optical fiber fixing band comprises an inner optical fiber fixing band (153) sleeved on the periphery of the optical fiber supporting block (150), and an outer optical fiber fixing band (152) sleeved on the periphery of the inner optical fiber fixing band (153), wherein a plurality of optical fiber heat-shrinkable sleeves (151) are fixed between the inner optical fiber fixing band (153) and the optical fiber supporting block (150), and between the inner optical fiber fixing band (153) and the outer optical fiber fixing band (152).

8. A submarine optical cable passive splitter, characterized by comprising an optical fiber coiling assembly (100) according to any of claims 1 to 7; and

a branch connection structure (300), wherein the branch connection structure (300) comprises a conical middle joint (301) connected with one end of the optical fiber coiling assembly (100), and a counter bore is arranged at one end, close to the optical fiber coiling assembly (100), of the conical middle joint (301);

the conical surface of the conical middle joint (301) is provided with a first connecting pipe (302) and a second connecting pipe (303) which are communicated with the counter bore, and the first connecting pipe (302) and the second connecting pipe (303) are made of conductive materials or insulating materials which are the same as or different from each other;

one end of the first connecting pipe (302) and one end of the second connecting pipe (303) far away from the conical middle joint (301) are respectively provided with a conical branch joint (305), and grooves communicated with the first connecting pipe (302) or the second connecting pipe (303) are formed in the conical branch joints (305).

9. A submarine optical cable passive splitter according to claim 8, wherein:

the main cable inner armor compression joint structure (200) is connected to the other end of the optical fiber coiling assembly (100), and the tapered branch joint (305) is connected with the branch cable inner armor compression joint structure (400);

and an inner protection structure (500) which is coated on the peripheries of the main cable inner armor compression joint structure (200), the optical fiber coiling component (100), the branch connecting structure (300) and the branch cable inner armor compression joint structure (400);

the inner protection structure (500) comprises an inner protection steel cylinder (501) sleeved on the outer periphery of the main cable inner armor compression joint structure (200) and the optical fiber coiled fiber assembly (100), and an inner branch protection piece (503) sleeved on the outer periphery of the branch connection structure (300) and the outer periphery of the branch cable inner armor compression joint structure (400), wherein the inner branch protection piece (503) is made of conductive materials or insulating materials.

10. A submarine optical cable passive splitter according to claim 9, wherein:

the inner protection steel cylinder (501) is fixedly connected with the main cable inner armor compression joint structure (200) through a plurality of pins, and the outer periphery of the inner protection steel cylinder (501) is sleeved with a pressure ring (502) for fixing the pins on the main cable inner armor compression joint structure (200);

the inner branch protection piece (503) comprises an upper protection sleeve and a lower protection sleeve which are mutually combined, and a cavity for accommodating the branch connection structure (300) and the branch cable inner armor compression joint structure (400) is formed between the upper protection sleeve and the lower protection sleeve;

a plurality of locating pins (504) which are mutually connected are arranged between the upper protection sleeve and the lower protection sleeve, and the upper protection sleeve and the lower protection sleeve are of a Y-shaped structure and are connected into a whole through a plurality of connecting rings.

11. A submarine optical cable passive splitter according to claim 9, wherein:

the main cable inner armor compression joint structure (200) comprises a conical socket (201), one end of the conical socket (201) is provided with a threaded hole connected with a main cable submarine cable (910), the other end of the conical socket is provided with a conical hole for accommodating a conical plug (202), and the conical plug (202) is matched with the conical socket (201) to compress an inner armor steel wire of the main cable submarine cable (910);

the tapered hole is internally provided with a gasket (203) for pressing the tapered plug (202) and a locknut (204), an optical fiber protective sleeve (205) and an optical fiber protective sleeve fixing clamp (206) for fixing the optical fiber protective sleeve (205) on the tapered socket (201) are arranged outside the tapered hole, and the inner armor compression joint structure (400) of the branch cable is identical to the inner armor compression joint structure (200) of the main cable.

12. A submarine optical cable passive splitter according to claim 9, wherein:

the cable also comprises a heat-shrinkable sleeve (507) coated on the peripheries of the main cable inner armor compression joint structure (200), the inner protection structure (500) and the branch cable inner armor compression joint structure (400);

the main cable outer armor crimp structure (600) is positioned at the periphery of the main cable inner armor crimp structure (200), and the branch cable outer armor crimp structure (700) is positioned at the periphery of the branch cable inner armor crimp structure (400);

the outer periphery of main cable outer armor crimping structure (600), heat shrinkage bush (507) and branch cable outer armor crimping structure (700) is equipped with outer protection architecture (800).

13. A submarine optical cable passive splitter according to claim 12, wherein:

the main cable outer armor compression joint structure (600) comprises a conical locking mandrel (601) and an intermediate locking sleeve (603) which is matched with the conical locking mandrel (601) to compress a first outer armor steel wire, wherein an inner partition ring (602) for partitioning the first outer armor steel wire is arranged between the conical locking mandrel (601) and the intermediate locking sleeve (603);

an outer locking sleeve (605) for crimping the second outer armor wire is connected to one end, far away from the conical locking mandrel (601), of the middle locking sleeve (603), and an outer separation ring (604) for separating the second outer armor wire is arranged between the middle locking sleeve (603) and the outer locking sleeve (605);

the outer armor compression joint structure (700) of the branch cable is identical to the outer armor compression joint structure (600) of the main cable.

14. A submarine optical cable passive splitter according to claim 12, wherein:

the outer protection structure (800) comprises a main cable compression nut (801) which is connected with the periphery of the main cable outer armor compression structure (600) in a threaded manner, and a branch cable compression nut (805) which is connected with the periphery of the branch cable outer armor compression structure (700) in a threaded manner;

and an outer protection steel cylinder (802), an outer protection transition piece (803) and a branch connection protective sleeve (804) which are sleeved on the periphery of the heat shrinkage sleeve (507) and are sequentially connected.

15. A submarine optical cable passive splitter according to claim 14, wherein:

also comprises a buffer (900) connected with the main cable compression nut (801) and used for protecting the main cable submarine cable (910), and a buffer (900) connected with the branch cable compression nut (805) and used for protecting the branch submarine cable (920).

Images