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CN-116338881-B - Optical fiber coiling assembly for branching device and submarine optical cable passive branching device

CN116338881BCN 116338881 BCN116338881 BCN 116338881BCN-116338881-B

Abstract

The application relates to an optical fiber coiling assembly for a branching device and a submarine optical cable passive branching device, wherein the optical fiber coiling assembly comprises a coiling unit, a fiber fixing unit and a fiber fixing unit, wherein the coiling unit comprises a transition storage tray, optical fiber storage trays and optical fiber bending limiters, the optical fiber storage trays are respectively arranged at two ends of the transition storage tray, the optical fiber bending limiters are arranged at the upper side and the lower side of the transition storage tray and the optical fiber storage tray, the transition storage tray and the optical fiber storage tray are connected into a whole, the fiber fixing unit comprises an optical fiber supporting block fixed on the optical fiber bending limiters, a plurality of optical fiber heat-shrinkable tubes are distributed on the optical fiber supporting block, and optical fiber fixing belts are fixed on the surface of the optical fiber supporting block and fix 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, and the number of the transition storage tray and the optical fiber bending limiter can be modularly expanded according to the required capacity of the optical fibers, so that the optical fiber coiling unit meets the storage requirement of large-capacity optical fibers.

Inventors

  • YANG LONG
  • YANG CHENG
  • ZHU YU
  • CHEN YANLI

Assignees

  • 烽火通信科技股份有限公司
  • 烽火海洋网络设备有限公司

Dates

Publication Date
20260512
Application Date
20221207

Claims (14)

  1. 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 belt which is fixed on the surface of the optical fiber supporting block (150) and is used for fixing the optical fiber heat-shrinkable tubes (151) on the outer surface of the optical fiber supporting block (150); 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).
  2. 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. 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. 4. A fiber optic pigtail assembly for a splitter as claimed in claim 1, 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).
  5. 5. 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).
  6. 6. A fiber optic pigtail assembly for a splitter as defined in claim 5, 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).
  7. 7. A submarine optical cable passive splitter comprising an optical fiber pigtail assembly (100) according to any one of claims 1 to 6, 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).
  8. 8. A submarine optical cable passive splitter according to claim 7, 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.
  9. 9. A submarine optical cable passive splitter according to claim 8, 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.
  10. 10. A submarine optical cable passive splitter according to claim 8, 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.
  11. 11. A submarine optical cable passive splitter according to claim 8, 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).
  12. 12. A submarine optical cable passive splitter according to claim 11, 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.
  13. 13. A submarine optical cable passive splitter according to claim 11, 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.
  14. 14. A submarine optical cable passive splitter according to claim 13, 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).

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 the advantages of larger overall dimension, complex structure, long integration time, higher cost of the whole machine and lack of competitive advantage in the same kind of markets, and meanwhile, compatibility of submarine cable types provided by different submarine cable suppliers is difficult to realize. 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 of small optical fiber storage capacity of the submarine optical cable passive splitter in the related technology. A first aspect of an embodiment of the present application provides an optical fiber 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, and the plurality of sections of transition storage trays are fixedly connected through optical fiber bending limiters, wherein 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 in a disc-shaped structure, one end of the optical fiber bending limiter, which is far away from the transition storage tray, is fixedly provided with a fiber blocking disc with a 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 a fastener 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 positioned at the left side and the right side of the 'H' -shaped supporting plate and vertically connected with the 'H' -shaped supporting plate; The