WO2022181011A1 - Dispositif de ramification sous-marin, procédé de configuration de dispositif de ramification sous-marin, et système de câble sous-marin - Google Patents

Dispositif de ramification sous-marin, procédé de configuration de dispositif de ramification sous-marin, et système de câble sous-marin Download PDF

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Publication number
WO2022181011A1
WO2022181011A1 PCT/JP2021/047077 JP2021047077W WO2022181011A1 WO 2022181011 A1 WO2022181011 A1 WO 2022181011A1 JP 2021047077 W JP2021047077 W JP 2021047077W WO 2022181011 A1 WO2022181011 A1 WO 2022181011A1
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WO
WIPO (PCT)
Prior art keywords
branch
cable
submarine
tail
group
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Application number
PCT/JP2021/047077
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English (en)
Japanese (ja)
Inventor
有香 青木
敏秀 長沢
Original Assignee
Ｎｅｃプラットフォームズ株式会社
日本電気株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by Ｎｅｃプラットフォームズ株式会社, 日本電気株式会社 filed Critical Ｎｅｃプラットフォームズ株式会社
Publication of WO2022181011A1 publication Critical patent/WO2022181011A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
    • G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor

Definitions

  • the present disclosure relates to a submarine branching device, a method of configuring a submarine branching device, and a submarine cable system.
  • Patent Document 1 a submarine branching device that branches one submarine cable into a plurality of submarine cables is known.
  • one tail cable connected to one submarine cable is connected to an airtight structural member that prevents the ingress of seawater.
  • a plurality of optical fibers included in the tail cable are branched into a plurality of groups inside the airtight structural member.
  • a plurality of tail cables leading out the optical fibers branched into a plurality of groups from the airtight structural member are each connected to the submarine cable.
  • the related submarine branching device it is necessary to branch multiple optical fibers included in the tail cable into multiple groups inside the airtight structural member. Since the airtight structural member is container-shaped and occupies a predetermined space, there is a problem that the submarine branching device becomes large.
  • the submarine cable can be branched without an airtight structural member. That is, an airtight structural member becomes unnecessary, and the size of the submarine branching device can be reduced.
  • an object of the present disclosure is to provide a submarine branching device that can be miniaturized by branching the tail cable into a plurality of cables while maintaining airtightness.
  • a submarine branching device includes: a main tail cable having a plurality of optical fibers and a metal tube covering the plurality of optical fibers; a first branch tail cable having a first group of the plurality of optical fibers and a metal tube covering the first group; a second branch tail cable having a second group of the plurality of optical fibers and a metal tube covering the second group; a branching member that connects the main tail cable and the first and second branch tail cables and has therein a through hole for branching the plurality of optical fibers into the first group and the second group; prepared, One ends of metal tubes of the main tail cable and the first and second branch tail cables are brazed to the open ends of the through holes of the branch member.
  • a method for configuring a submarine branching device includes: a main tail cable having a metal tube covering the plurality of optical fibers and the first group via a branching member having a through hole for branching the plurality of optical fibers into the first group and the second group; connecting a first branch tail cable with a covering metal tube and a second branch tail cable with a metal tube covering the second group; and brazing one end of each metal tube of the main tail cable and the first and second branch tail cables to each open end of the through hole of the branch member.
  • a submarine cable system includes: a main submarine cable; first and second branch submarine cables; a submarine branching device that branches the main submarine cable into the first and second branch submarine cables; The submarine branching device, a main tail cable having a plurality of optical fibers and a metal tube covering the plurality of optical fibers and connecting to the main submarine cable; a first branch tail cable having a first group of the plurality of optical fibers and a metal tube covering the first group and connecting to the first branch submarine cable; a second branch tail cable having a second group of the plurality of optical fibers and a metal tube covering the second group and connecting to the second branch submarine cable; a through hole for connecting the main tail cable and the first and second branch tail cables and for branching the plurality of optical fibers included in the main tail cable into the first group and the second group; a branch member comprising; One ends of metal tubes of the main tail cable and the first and second branch tail cables are brazed to the open ends of the through holes of the branch member.
  • a submarine branching device that can be miniaturized by branching the tail cable into a plurality of cables while maintaining airtightness.
  • FIG. 1 is a schematic cross-sectional view showing the configuration of a submarine branching device according to a first embodiment
  • FIG. FIG. 5 is a schematic cross-sectional view showing the configuration of a submarine branching device and a submarine cable system according to a second embodiment
  • FIG. 2 is a schematic cross-sectional view showing the configuration of a related submarine branching device and submarine cable system
  • 4 is an external perspective view of the branching member 20.
  • FIG. 3 is a cross-sectional perspective view of the branching member 20.
  • FIG. It is a top view which shows the manufacturing method of a tail cable.
  • FIG. 1 is a schematic cross-sectional view showing the configuration of the submarine branching device according to the first embodiment.
  • the submarine branching device according to the first embodiment includes a branching member 20, a main tail cable MTC, and branch tail cables BTC1 and BTC2.
  • the main tail cable MTC connects to an undersea cable (not shown in FIG. 1).
  • the other end of the main tail cable MTC is connected to the branch tail cables BTC1, BTC2 via the branch member 20.
  • the main tail cable MTC includes all the optical fibers, namely the fiber groups FG1, FG2 and the metal tubes covering the fiber groups FG1, FG2.
  • the optical fiber groups FG1 and FG2 inside the cable are indicated by thick solid lines for easy understanding.
  • branch tail cable BTC1 As shown in FIG. 1, one end of the branch tail cable (first branch tail cable) BTC1 is connected to the main tail cable MTC via the branch member 20. As shown in FIG. The other end of the branch tail cable BTC1 is connected to a branch submarine cable (not shown in FIG. 1).
  • the branch tail cable BTC1 includes an optical fiber group (first group of optical fibers) FG1 and a metal tube covering the optical fiber group FG1.
  • branch tail cable BTC2 As shown in FIG. 1, one end of the branch tail cable (second branch tail cable) BTC2 is connected to the main tail cable MTC via the branch member 20. As shown in FIG. The other end of the branch tail cable BTC2 is connected to a branch submarine cable (not shown in FIG. 1).
  • the branch tail cable BTC2 includes an optical fiber group (second group of optical fibers) FG2 and a metal tube covering the optical fiber group FG2.
  • the branch member 20 connects the main tail cable MTC and the branch tail cables BTC1 and BTC2. Further, the branching member 20 is internally provided with a through hole 21 for branching a plurality of optical fibers included in the main tail cable MTC into the optical fiber groups FG1 and FG2.
  • each metal tube of the main tail cable MTC and the branch tail cables BTC1 and BTC2 is brazed to each open end of the through hole 21 of the branch member 20 . Therefore, the insides of the branch member 20, the main tail cable MTC, and the branch tail cables BTC1 and BTC2 are kept airtight, and the intrusion of seawater into them is suppressed.
  • the branch member 20, the main tail cable MTC, and the branch tail cables BTC1 and BTC2 collectively form a tail cable.
  • the main tail cable MTC branches into the branch tail cables BTC1 and BTC2 while airtightness is maintained by the brazed branch member 20 . That is, the tail cable branches while maintaining airtightness. Therefore, instead of the airtight structural member, the submarine cable can be branched through the branched tail cable while maintaining airtightness. As a result, a container-like airtight structural member that occupies a predetermined space becomes unnecessary, and the submarine bifurcation device can be miniaturized.
  • the plurality of optical fibers included in the main tail cable MTC are branched into two groups, but they may be branched into three or more groups.
  • FIG. 2 is a schematic cross-sectional view showing the configuration of the submarine branching device and the submarine cable system according to the second embodiment.
  • the submarine cable system according to the second embodiment includes a main submarine cable MSC, branch submarine cables BSC1 and BSC2, and a submarine branching device.
  • the submarine branching device according to the second embodiment includes a housing 10, joint boxes JB, JB1, JB2, and joints in addition to the branching member 20, main tail cable MTC, and branch tail cables BTC1, BTC2 shown in It has covers 30a and 30b.
  • the housing 10 is a cylindrical body that houses the branch member 20, the main tail cable MTC, and the branch tail cables BTC1, BTC2.
  • the housing 10 has strength to withstand water pressure at a depth of 8000 m, for example, and is made of, for example, a beryllium copper alloy.
  • one end of the main tail cable MTC is connected to the main submarine cable MSC via a joint box JB.
  • the other end of the main tail cable MTC is connected to the branch tail cables BTC1, BTC2 via the branch member 20.
  • the main tail cable MTC may be supported by a support member 40 fixed to the housing 10 .
  • the main tail cable MTC contains all the optical fibers (ie, optical fiber groups FG1, FG2) inside a metal tube.
  • the metal pipe is, for example, a copper pipe, which protects the optical fibers (optical fiber groups FG1 and FG2) and functions as a feeder line.
  • the feeders and optical fibers of the main submarine cable MSC and the main tail cable MTC are connected to each other.
  • the optical fiber groups FG1 and FG2 inside the cable are indicated by thick solid lines for easy understanding.
  • branch tail cable BTC1 is connected to the main tail cable MTC via the branch member 20.
  • branch member 20 As shown in FIG.
  • the other end of branch tail cable BTC1 is connected to branch submarine cable BSC1 via joint box JB1.
  • the branch submarine cable BSC1 may be supported by a support member 41 fixed to the housing 10 .
  • a branch tail cable BTC1 accommodates an optical fiber group FG1 in a metal tube.
  • the metal tube is, for example, a copper tube, which protects the optical fiber group FG1 and also functions as a feeder line.
  • the feeder lines and the optical fibers of the branch submarine cable BSC1 and the branch tail cable BTC1 are connected to each other.
  • branch tail cable BTC2 is connected to main tail cable MTC via branch member 20 .
  • the other end of branch tail cable BTC2 is connected to branch submarine cable BSC2 via joint box JB2.
  • the branch submarine cable BSC2 may be supported by a support member 42 fixed to the housing 10 .
  • a branch tail cable BTC2 accommodates an optical fiber group FG2 in a metal tube.
  • the metal tube is, for example, a copper tube, which protects the optical fiber group FG2 and also functions as a feeder line.
  • the feeder lines and the optical fibers of the branch submarine cable BSC2 and the branch tail cable BTC2 are connected to each other.
  • the branch member 20 connects the main tail cable MTC and the branch tail cables BTC1 and BTC2. Further, the branching member 20 is internally provided with a through hole 21 for branching a plurality of optical fibers included in the main tail cable MTC into the optical fiber groups FG1 and FG2.
  • each metal tube of the main tail cable MTC and the branch tail cables BTC1 and BTC2 is brazed to each open end of the through hole 21 of the branch member 20 . Therefore, the insides of the branch member 20, the main tail cable MTC, and the branch tail cables BTC1 and BTC2 are kept airtight, and the intrusion of seawater into them is suppressed.
  • the branch member 20, the main tail cable MTC, and the branch tail cables BTC1 and BTC2 collectively form a tail cable. Details of the branch member 20 will be described later.
  • the joint cover 30a is a hollow member connected to one end of the housing 10 and housing the joint box JB. One end of the joint cover 30a is fitted or screwed into the housing 10 and fixed. The other end of the joint cover 30a is opened to introduce the main submarine cable MSC, and the diameter is tapered toward the main submarine cable MSC side.
  • the joint cover 30b is a hollow member connected to the other end of the housing 10 and housing the joint boxes JB1 and JB2. One end of the joint cover 30b is fitted or screwed into the housing 10 and fixed. The other end of the joint cover 30b has two openings for introducing the branch submarine cables BSC1 and BSC2. Note that seawater enters the inside of the housing 10 and the joint covers 30a and 30b.
  • FIG. 3 is a schematic cross-sectional view showing the configuration of a related submarine branching device and submarine cable system.
  • the associated submarine bifurcation device includes a hermetic structural member 100 in place of the housing 10 shown in FIG. Also, the associated subsea bifurcation does not include a bifurcation member 20 . As shown in FIG. 3 , the airtight structural member 100 has a configuration in which an internal unit 111 is housed in a cylindrical pressure-resistant housing 112 .
  • the pressure-resistant housing 112 is provided with a lead-in portion 130 that guides the optical fibers (optical fiber groups FG1 and FG2) included in the main tail cable MTC to the internal unit 111 . Then, inside the internal unit 111, the optical fibers included in the main tail cable MTC are branched into the optical fiber groups FG1 and FG2.
  • the pressure-resistant housing 112 is provided with a lead-out portion 131 for leading out the optical fiber group FG1 led out from the internal unit 111 to the branch tail cable BTC1. Furthermore, the pressure-resistant housing 112 is provided with a lead-out portion 132 for leading out the optical fiber group FG2 led out from the internal unit 111 to the branch tail cable BTC2.
  • the pressure-resistant housing 112, the introduction section 130, and the discharge sections 131 and 132 have an airtight structure so that seawater does not enter the pressure-resistant housing 112 from the introduction section 130 and the discharge sections 131 and 132 and the like.
  • the airtight structural member 100 it is necessary inside the airtight structural member 100 to branch the optical fibers included in the main tail cable MTC into the optical fiber groups FG1 and FG2.
  • the airtight structure member 100 is in the shape of a container and occupies a predetermined space, the undersea bifurcation device is enlarged.
  • the main tail cable MTC branches into branch tail cables BTC1 and BTC2 while airtightness is maintained by brazed branch members 20. ing. That is, the tail cable branches while maintaining airtightness. Therefore, instead of the airtight structural member 100 shown in FIG. 3, the main submarine cable MSC can be branched into the branch submarine cables BSC1 and BSC2 via the branched tail cables while maintaining airtightness. As a result, in the submarine branching device according to the present embodiment, the container-shaped airtight structural member 100 that occupies a predetermined space is not required, and the submarine branching device can be miniaturized.
  • FIG. 4 is an external perspective view of the branching member 20.
  • FIG. FIG. 5 is a cross-sectional perspective view of the branch member 20.
  • a Y-shaped through hole 21 is formed in plan view.
  • Counterbore holes 22 , 221 , and 222 having larger inner diameters than the through hole 21 are formed at three open ends of the Y-shaped through hole 21 .
  • one end of a copper tube CP that constitutes the main tail cable MTC is inserted into the counterbored hole 22 to a depth of, for example, several millimeters.
  • a tapered portion 22 a is formed at the open end of the counterbore 22 so as to increase in diameter from the inner peripheral surface of the counterbore 22 toward the outside.
  • a ring-shaped brazing portion is formed by filling a gap between the tapered portion 22a and the copper pipe CP with a brazing material.
  • one ends of copper pipes CP1 and CP2 constituting the branch tail cables BTC1 and BTC2 are respectively inserted into the counterbore holes 221 and 222 to a depth of, for example, several millimeters.
  • taper portions 221a and 222a are formed at the opening ends of the counterbore holes 221 and 222, respectively, so as to increase the diameter from the inner peripheral surface toward the outside.
  • ring-shaped brazing portions are also formed in tapered portions 221 a and 222 a of counterbore holes 221 and 222 in the same manner as tapered portion 22 a of counterbore hole 22 .
  • the optical fiber group FG1 is inserted through the copper tube CP1 of the branch tail cable BTC1 and the through hole 21 of the branch member 20 into the copper tube CP of the main tail cable MTC.
  • the optical fiber group FG2 is inserted through the copper pipe CP2 of the branch tail cable BTC2 and the through hole 21 of the branch member 20 into the copper pipe CP of the main tail cable MTC.
  • the paths connecting the copper pipes CP1, CP2 and the copper pipe CP are formed smoothly so as to draw an arc in plan view. With such a configuration, bending of the optical fiber groups FG1 and FG2 can be suppressed.
  • the diameter of the through-hole 21 is formed larger than the inner diameters of the copper pipes CP1 and CP2, and the inner diameter of the copper pipe CP is formed larger than the diameter of the through-hole 21. . Therefore, when the optical fiber groups FG1 and FG2 are inserted, the step between the inner peripheral surfaces of the copper pipes CP1 and CP2 and the through hole 21 or the step between the through hole 21 and the inner peripheral surface of the copper pipe CP causes the optical fiber group It is possible to prevent the tips of FG1 and FG2 from being caught.
  • the branch member 20 has the strength to withstand water pressure at a depth of 8000 m, and is made of, for example, steel material, copper, copper alloy (for example, beryllium copper alloy), or the like. Further, in order to ensure airtightness, as described above, the branch member 20 is brazed to the ends of the copper pipe CP of the main tail cable MTC and the ends of the copper pipes CP1 and CP2 of the branch tail cables BTC1 and BTC2. ing. Furthermore, the branch member 20 protects the optical fiber groups FG1 and FG2 and also functions as a feeder line, like the copper pipes CP, CP1 and CP2.
  • the material of the branch member 20 is selected in consideration of the strength, the brazing property with the copper pipe, the electrical resistance, and the like.
  • the electrical resistance of the entire feeder line the electrical resistance of the copper tube is dominant, so the electrical resistance has a low priority when selecting the material for the branch member 20 .
  • the branching member 20 is manufactured by, for example, lamination molding using metal powder (a so-called metal 3D printer).
  • the branch member 20 is manufactured by additive manufacturing using maraging steel powder.
  • the branch member 20 can be made thinner (that is, smaller and lighter).
  • the thinning of the branch member 20 suppresses heat dissipation during brazing, making it easier to melt the brazing filler metal and improving weldability.
  • iron and steel materials compared to copper and copper alloys, iron and steel materials have higher strength and can be made thinner, and their thermal conductivity is lower, so heat removal during brazing can be suppressed.
  • the thickness of the portion where the counterbored hole 22 to be brazed with the copper pipe CP is formed can be set to 2 mm or less (for example, 1.2 mm).
  • the branch member 20 has a smooth outer shape corresponding to the Y-shaped through hole 21. As shown in FIG. On the other hand, in the branch member 20, the portion between the pair of counterbore holes 221 and 222 into which the copper pipes CP1 and CP2 are inserted protrudes outward.
  • the branch member 20 is insulated and molded. If a concave portion is formed between the counterbore holes 221 and 222 during insulation molding, a void is likely to occur. In the branch member 20 shown in FIGS. 4 and 5, since the portion between the counterbore holes 221 and 222 protrudes outward, air gaps are suppressed during insulation molding, and the withstand voltage is improved.
  • the corners of the branch member 20 located on the boundary between the outer peripheral surface and the end surface are chamfered. If the branching member 20 has corners during insulation molding, voids are likely to occur at the corners. In the branching member 20 shown in FIGS. 4 and 5, since the corners are chamfered, voids during insulation molding are suppressed and the withstand voltage is improved. In addition, the electric field strength itself at the corners is suppressed, and the withstand voltage is improved.
  • FIG. 6 is a plan view showing a method of manufacturing the tail cable.
  • FIG. 5 will also be referred to as appropriate.
  • the tail cable consists of branch member 20, main tail cable MTC, and branch tail cables BTC1, BTC2.
  • the main tail cable MTC includes a copper tube CP whose outer peripheral surface is coated with an insulation coating layer ICL.
  • the branch tail cable BTC1 includes a copper tube CP1 whose outer peripheral surface is coated with an insulation coating layer ICL1.
  • the branch tail cable BTC2 includes a copper tube CP2 whose outer peripheral surface is coated with an insulating coating layer ICL2.
  • the insulating coating layers ICL, ICL1, and ICL2 are made of polyethylene, for example.
  • the insulation coating layer ICL at one end of the main tail cable MTC to be inserted into the branch member 20 is removed to expose the copper pipe CP. Also, the insulating coating layer ICL1 at one end of the branch tail cable BTC1 inserted into the branch member 20 is removed to expose the copper pipe CP1. Similarly, the insulating coating layer ICL2 at one end of the branch tail cable BTC2 inserted into the branch member 20 is removed to expose the copper pipe CP2.
  • the exposed copper tubes CP1 and CP2 are bent in advance so that the branch tail cables BTC1 and BTC2 are parallel. back.
  • the copper pipes CP, CP1 and CP2 are inserted into the branch member 20 and assembled and brazed. The details are as described with reference to FIG.
  • the outer peripheral surface of the branch member 20 and the exposed outer peripheral surfaces of the copper pipes CP, CP1, and CP2 are insulated and covered with an insulating coating layer ICL3.
  • the insulating coating layer ICL3 is integrated with the insulating coating layers ICL, ICL1, and ICL2.
  • the insulating coating layers ICL, ICL1, and ICL2 it is made of polyethylene, for example.
  • the optical fiber group FG1 is inserted through the copper tube CP1 of the branch tail cable BTC1 and the through hole 21 of the branch member 20 into the copper tube CP of the main tail cable MTC.
  • the optical fiber group FG2 is inserted through the copper pipe CP2 of the branch tail cable BTC2 and the through hole 21 of the branch member 20 into the copper pipe CP of the main tail cable MTC.
  • the tail cable has a withstand voltage of, for example, 15 kV or more due to the insulating coating layers ICL, ICL1 to ICL3. Further, corrosion of the copper pipes CP, CP1, CP2 and the branch member 20 made of metal can be suppressed by the insulating coating layers ICL, ICL1 to ICL3.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

L'invention concerne un dispositif de ramification sous-marin comprenant : un câble de queue principal (MTC) ayant un tube métallique (CP)) recouvrant une pluralité de fibres optiques ; un premier câble de queue de ramification (BTC1) ayant un tube métallique (CP1) recouvrant un premier groupe (FG1) de la pluralité de fibres optiques ; un second câble de queue de ramification (BTC2) ayant un tube métallique (CP2) recouvrant un second groupe (FG2) de la pluralité de fibres optiques ; et un élément de ramification (20) qui connecte le câble de queue principal (MTC) et les premier et second câbles de queue de ramification (BTC1), (BTC2) et a un trou traversant (21) pour ramifier la pluralité de fibres optiques dans le premier groupe (FG1) et le second groupe (FG2). Une extrémité de chacun des tubes métalliques (CP), (CP1), (CP2) du câble de queue principal (MTC) et les premier et second câbles de queue de ramification (BTC1), (BTC2) sont brasés à chaque extrémité d'ouverture du trou traversant (21) de l'élément de ramification (20).
PCT/JP2021/047077 2021-02-26 2021-12-20 Dispositif de ramification sous-marin, procédé de configuration de dispositif de ramification sous-marin, et système de câble sous-marin WO2022181011A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021029780A JP7294687B2 (ja) 2021-02-26 2021-02-26 海底分岐装置、海底分岐装置の構成方法、及び海底ケーブルシステム
JP2021-029780 2021-02-26

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5690957A (en) * 1979-12-20 1981-07-23 Kobe Steel Ltd Maraging steel with superior stress corrosion crack resistance
JPS60245418A (ja) * 1984-05-16 1985-12-05 日本電信電話株式会社 海底ケ−ブル分岐部
US4778948A (en) * 1983-08-04 1988-10-18 Raychem Limited Cable joint
JPH09292555A (ja) * 1996-04-24 1997-11-11 Fujitsu Ltd 海中分岐装置アースケーブル接続部の構造
JP2003189456A (ja) * 2001-12-11 2003-07-04 Nec Corp 海底分岐装置の分岐部構造
JP2015204710A (ja) * 2014-04-15 2015-11-16 富士通株式会社 中継装置、フィードスルー、および、中継装置の製造方法
CN107482328A (zh) * 2017-09-01 2017-12-15 海鹰企业集团有限责任公司 一种水下声基阵输出电缆及其密封连接方法
CN109031568A (zh) * 2018-10-24 2018-12-18 江苏亨通海洋光网系统有限公司 用于海缆连接的分支器

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5690957A (en) * 1979-12-20 1981-07-23 Kobe Steel Ltd Maraging steel with superior stress corrosion crack resistance
US4778948A (en) * 1983-08-04 1988-10-18 Raychem Limited Cable joint
JPS60245418A (ja) * 1984-05-16 1985-12-05 日本電信電話株式会社 海底ケ−ブル分岐部
JPH09292555A (ja) * 1996-04-24 1997-11-11 Fujitsu Ltd 海中分岐装置アースケーブル接続部の構造
JP2003189456A (ja) * 2001-12-11 2003-07-04 Nec Corp 海底分岐装置の分岐部構造
JP2015204710A (ja) * 2014-04-15 2015-11-16 富士通株式会社 中継装置、フィードスルー、および、中継装置の製造方法
CN107482328A (zh) * 2017-09-01 2017-12-15 海鹰企业集团有限责任公司 一种水下声基阵输出电缆及其密封连接方法
CN109031568A (zh) * 2018-10-24 2018-12-18 江苏亨通海洋光网系统有限公司 用于海缆连接的分支器

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