УСТРОЙСТВО ПОДВОДНОЕ ДЛЯ ОПТОЭЛЕКТРОННОГО ОБОРУДОВАНИЯ (ВАРИАНТЫ)

Группа изобретений относится к области морского приборостроения. Подводное устройство для оптоэлектронного оборудования в 1 и 2 вариантах реализации содержит цилиндрический корпус с торцевыми крышками, узлы герметизации волоконно-оптического кабеля, расположенные на торцевых крышках, кассету, размещенную внутри герметичного корпуса. При этом кассета, установленная в корпусе с зазором и с возможностью ее жесткой фиксации, представляет собой конструкцию типа правильной четырехгранной призмы без боковых ребер, причем боковые грани образованы протяженными вдоль оси корпуса четырьмя ложементами, присоединенными у обоих торцов корпуса к основаниям в виде жестких дискообразных опор с внешним контуром в форме прямоугольника с закругленными углами и с центральным отверстием под волоконно-оптический кабель. При этом все ложементы выполнены одинаковыми, имеющими в поперечном сечении круговой сегмент с высотой h, дуга которого образована окружностью радиусом, равным внутреннему радиусу корпуса R, установлены ...

Verankerung für faseroptische Unterseekabel

Providing a subsea optical junction assembly for coupling fiber optic cables

Pipeline with integrated fiber optic cable

Abrasion resistant submarine cable arrangement

一种海底电缆和/或光缆结构,它将存在于铠装和未铠装缆线之间的重量/强度间隙连接起来。一种分股的护面层(6)包括多股交替的钢丝(7)和聚合填料(8)。当放在深度超过2km的水中时,这样一种缆线具有足够的强度来承受一段连接到它上面的重的铠装缆线,却又足够轻,使得一根未铠装缆线在深水中能够承受它。

Method and apparatus for laying and burying a continuous flexible sea line.

Cabo submarino que possui conduto de fibra ótica alagável, método e aparelho

INTEGRATED 3-WAY BRANCHING UNIT SWITCH MODULE HAVING SMALL FOOTPRINT

Aspects of the present disclosure describe systems, methods. and structures directed to an integrated 3-way branching unit switch module suitable for undersea application. 2. The branching unit switch module of wherein each of the switches is a 1×2 switch having 3 ports.3. The branching unit switch module of wherein one port of every switch is optically connected to an individual optical fiber of the optical cable to which it is optically connected.4. The branching unit switch module of wherein two ports of every switch are individually and optically connected to the other two switches claim 3 , one port per switch.5. The branching unit switch module of wherein each pair of the first claim 4 , second claim 4 , and third pair of switches are connected to a transmit fiber and a receive fiber of its respective optical cable.6. The branching unit switch module of wherein each switch includes a circulator optically connecting a respective optical fiber of the optical cable to a respective port.7. The branching unit switch module of wherein each circulator is optically connected to a transmit and receive fiber of the optical cable and to a respective switch.8. The branching unit switch module of wherein each of the switches is a 2×2 switch. This application claims the benefit of U.S. Provisional Patent Application Ser. No. 63/122,011 filed 7 Dec. 2020 the entire contents of which is incorporated by reference as if set forth at length herein.This disclosure relates generally to optical communications systems, methods, and structures. More particularly, it describes an integrated 3-way branching unit switch module having a small footprint particularly applicable to undersea applications.As is known in the optical communications arts, undersea optical communications facilities and cables are an increasingly important component of global communications—including Internet. Branching units are particularly important components of such undersea facilities. Given this importance, ...

Means for installing an elongate flexible body, such as a fibre cable

The present invention relates to means for installing a longitudinal flexible body, such as a subsea fibre cable (1) on a sea bed from a vessel or cable ship. It includes cable guiding means (3) suspended substantially vertically from the vessel to a predetermined distance above the sea bed (19). The cable guiding means (3) has a weight (8) large enough to secure a substantially vertical position relatively to the laying vessel, when the actual sea currents and depth conditions are taken into consideration.

Installing cables over extended spans, eg subsea

Methods are disclosed for laying cables over extended spans, for example over a transatlantic route. Multiple ducting 300 or single ducting for multiple cables 310 is laid part way along the route to facilitate subsequent installation of cables. Methods of gaining access to the termination point 210 of the ducting and repairing ducting as well as details of termination points and construction of ducting are also disclosed.

Fibre instalaltion

Smart subsea pipeline with conduits

OPTICAL CABLES AND PROCEDURES FOR THE REPAIR OF DAMAGED OPTICAL CABLE INSTALLATIONS.

전력 케이블 조립 디바이스 및 이러한 디바이스를 구비하는 전력 케이블

... 본 발명은 전력 케이블의 이웃하는 전력 코어들 사이의 공간들에 배열되기에 적합한 전력 케이블 조립 디바이스에 관한 것으로, 상기 전력 케이블 조립 디바이스는 폴리머 재료로 만들어지고 전력 케이블의 단면 형상과 신장부에 적합한 압출성형된 프로파일 보디 (4) 를 포함하고, 상기 프로파일 보디 (4) 는 제 1 벽 (6), 제 2 벽 (8), 및 제 3 벽 (10) 을 포함하고, 상기 제 1 벽 (6) 은 볼록하고 또한 대향하는 제 1 단부 부분과 제 2 단부 부분 (6a, 6b) 을 가지고, 제 1 벽 (6) 은 전력 케이블의 재킷을 대면하기에 적합한 외부 표면 (102) 을 가지고, 상기 프로파일 보디는 상기 제 2 벽 (8) 으로부터 상기 제 3 벽 (10) 으로 연장하는 챔버벽 (18) 을 추가로 포함하고, 상기 챔버벽 (18) 은 챔버 (16) 를 규정하는 내부 표면 (100) 을 가지고, 상기 프로파일 보디 (4) 는 상기 챔버 (16) 에 대해 상기 제 2 벽 (8) 과 상기 제 3 벽 (10) 사이에서 슬릿 (15) 을 규정하고, 상기 챔버 (16) 는 상기 슬릿 (15) 을 통해 광학 섬유 케이블 (30) 을 수용하기에 적합하다. 본 발명에 따라, 상기 내부 표면 (100) 의 적어도 일부 및 상기 외부 표면 (102) 의 적어도 일부에는 반도체 재료 (21) 가 각각 제공되고, 상기 내부 표면 (100) 과 상기 외부 표면 (102) 은 상기 반도체 재료 (21) 에 의해 전기적으로 상호 연결된다.

Local ROV

The present invention relates to means for installing an elongated element (1) - such as a submarine cable - on a sea bed from a laying vessel or cable ship (2), - including guideweight/tracking gear (4) suspended from the ship and riding on the element (1). Said gear (4) includes garage means (10) for hosting a local ROV (11) linked to said garage means with a tether cable (12) long enough to enable the towed local ROV to monitor the element touchdown area (6).

Attrappe, Attrappensystem, Unterwasserfahrzeug oder Absenker sowie Verbringvorrichtung, Fahrzeug und Trainingsverfahren

Die Erfindung betrifft eine Attrappe mit einem optischen Übertragungsweg, welcher den optischen Eingang mit dem optischen Ausgang optisch verbindet, wobei ein optisches Dämpfungselement im optischen Übertragungsweg angeordnet ist, wobei mittels des optischen Dämpfungselements eine optischen Bedingung des Übertragungswegs derart eingestellt ist, dass ein optisches Übertragungsverhalten eines gewickelten Lichtwellenleiters simuliert wird. Des Weiteren betrifft die Erfindung ein Attrappensystem, Unterwasserfahrzeug und/oder Absenker, eine Verbringvorrichtung, ein Fahrzeug sowie ein Trainingsverfahren mit einer Attrappe, welche in einem Unterwasserfahrzeug und/oder in einen Absenker eingesetzt wird.

Optical cables and methods of repairing damaged optical cable installations

Apparatus

PROCEDURE AND DEVICE FOR CONTINUOUS MOVING AND ENTRENCHING OF A FLEXIBLE LINE UNDER WATER

METHOD AND DEVICE FOR CONTINUOUSLY LAYING AND BURYING A FLEXIBLE SUBMARINE CABLE

Method and device for continuously laying and burying a flexible submarine conduit. It is characterised in that it consists in using a self-propelled sea plough (1) remote-controlled via a control flexible (2), said sea plough carrying at least one reel (6) of flexible conduit (7), controlling said sea plough from a site (5) so as to lay and bury a length of the flexible conduit up to a first predetermined point (P1), controlling said sea plough beyond said first predetermined point from another site (10), continuing laying and burying of the flexible conduit as far as a second predetermined point (P2), one of said sites being the land (5) and the other comprising a waterborne vessel. Applications include simultaneous laying and burying of flexible conduits such as optical cables, coaxial cables for analogue transmission, electrical cables, single or multiple flexible tubular conduits.

OPTIMIZATION OF SIZE ON UMBILICAL REPAIR JOINTS FOR DEEP WATER

An assembly for splicing and repairing an umbilical is provided having two terminal bend restrictors and two strain terminators, here each terminal bend restrictor has at least two interconnected modules, a connecting end, and a free end. The strain terminators have a strain receiving end and a strain providing end, with each of the strain receiving ends is connected to one of the connecting ends of the terminal bend restrictors. The assembly further has an intermediate bend restrictor having at least two interconnected modules and two connecting ends. The two strain terminators are connected at their strain providing ends to separate connecting ends of the intermediate bend restrictor, and the intermediate bend restrictor is dimensioned to withstand tensile strain from the connected strain terminators.

Pipe-conforming structure

The present techniques are directed to systems and methods for forming a pipe-conforming structure. The pipe-conforming structure includes a polymer material and one or more optic fibers embedded within the polymer material. The polymer material is formed into a structure that is conformed to the shape of a pipe. A method includes forming a polymer material into a structure including an edge region and a center region. The center region has a greater thickness than the edge region. The method includes inserting one or more optic fibers into the polymer material.

Sealable Communication Cable Connection Assemblies

Communication device connection assemblies are described. The sealable connection assemblies are configured to provide water-tight connections for various data transmission elements, including cables, network devices, and computing devices. The connection assemblies may be used for various data transmission protocols, such as fiber optic connections. A compression element of the connection assembly may be configured to engage and compress a sealing element against a communication cable extending through the sealable connection assembly when a tension element is coupled to the inner body, thereby forming a seal between the sealable element and the communication cable. The connection assemblies may include a retainer body configured to form a grip or retention force with a communication cable sufficient to reduce and/or eliminate any forces on the communication cable (i.e., bending and/or straight pull forces) from being transferred to and/or otherwise effecting other components of the connection ...

OPTISCHE KABEL UND VERFAHREN ZUR REPARATUR VON BESCHÄDIGTEN OPTISCHEN KABELINSTALLATIONEN.

Mounting arrangement for offshore structure

Apparatus

POWER CABLE FILLER DEVICE AND POWER CABLE COMPRISING THE SAME

The present disclosure relates to a power cable filler device (1) adapted to bear against a first power core and a second power core in a power cable. The power cable filler device (1) comprises a first arced wall (3) which defines a portion of a first circle (9) having a first diameter, a second arced wall (5) and a third arced wall (7), each defining a portion of a second circle (11) having a second diameter which is smaller than the first diameter, which first arced wall (3) has a first end (3a) connected to a first end (5a) of the second arced wall (5), and which first arced wall (3) has a second end (3b) connected to a first end (7a) of the third arced wall (7), wherein the second arced wall (5) has a second end (5b) and the third arced wall (7) has a second end (7b) adjacent each other and defining a slit (13), whereby a chamber is formed between the first arced wall (3), the second arced wall (5) and the third arced wall (7), a first partitioning wall (17a) in the chamber, extending between the first arced wall (3) and the second arced wall (5), and a second partitioning wall (17b) in the chamber, extending between the first arced wall (3) and the third arced wall (7), wherein the first partitioning wall (17a) extends in a first radial direction (19a) along its entire extension from the first arced wall (3) to the second arced wall (5), and wherein the second partitioning wall (17b) extends in a second radial direction (19b) along its entire extension from the first arced wall (3) to the third arced wall (7), which first radial direction (19a) and second radial direction (19b) are defined with respect to the radius of the first arced wall (3). A power cable is also disclosed herein.

LOCATION AND MONITORING OF UNDERSEA CABLES

The present application described methods an apparatus for locating and/or monitoring subsea cables (101) having an optical fibre (105) deployed along its length. The optical fibre (105) is connected to a distributed acoustic sensing (DAS) interrogator unit to interrogate the optical fibre to provide a fibre optic DAS sensor. To locate the cable an acoustic stimulus is transmitted into the water from one or more known locations. The time of arrival of an acoustic signal matching the stimulus at the sensing portions of the DAS fibre can be detected and used to determine information about the location of those sensing portions to the known location. The DAS signals returns can also be monitored under ambient conditions to detect any signals indicative of likely damage to the cable.

ferramenta de instalação submarina, e, método para instalar um corpo flexível no leito do mar

ferramenta de instalação submarina, e, método para instalar um corpo flexível no leito do mar. uma ferramenta de instalação submarina para instalar um corpo flexível, isto é, um cabo submarino de fibra i no leito do mar a partir de uma embarcação na superficie, e um método associado para instalar o corpo flexível no leito do mar são fornecidos. a ferramenta de instalação inclui um tensionador 4 1_2,a-b que pode ser acoplado ao corpo flexível i para ativamente tracioná-lo para baixo, assim aumentando a tensão do em uma seção superior a do cabo a partir da embarcação na superficie 16 até a ferramenta de instalação. a elevada tensão na parte superior do cabo fornece bom controle, mesmo sob fortes correntes marítimas. ao mesmo tempo, o tensionador habilita uma baixa tensão na parte de fundo do cabo, a partir da ferramenta de instalação até o leito do mar, fornecendo um bom controle da posição do ponto de contato com o solo marinho, no leito do mar. underwater installation tool, and method for installing a flexible body on the seabed. an underwater installation tool for installing a flexible body, that is, an underwater fiber i cable on the seabed from a vessel on the surface, and an associated method for installing the flexible body on the seabed are provided. the installation tool includes a tensioner 4 1_2, ab that can be coupled to the flexible body i to actively pull it down, thus increasing the tension in a section higher than the cable from the vessel on surface 16 to the tool installation. the high voltage at the top of the cable provides good control, even under strong sea currents. at the same time, the tensioner enables a low voltage at the bottom of the cable, from the installation tool to the seabed, providing good control of the position of the point of contact with the seabed, on the seabed.

Sealable communication cable connection assemblies

Communication device connection assemblies are described. The sealable connection assemblies are configured to provide water-tight connections for various data transmission elements, including cables, network devices, and computing devices. The connection assemblies may be used for various data transmission protocols, such as fiber optic connections. A compression element of the connection assembly may be configured to engage and compress a sealing element against a communication cable extending through the sealable connection assembly when a tension element is coupled to the inner body, thereby forming a seal between the sealable element and the communication cable. The connection assemblies may include a retainer body configured to form a grip or retention force with a communication cable sufficient to reduce and/or eliminate any forces on the communication cable (i.e., bending and/or straight pull forces) from being transferred to and/or otherwise effecting other components of the connection ...

METHOD AND DEVICE FOR CONTINUOUSLY LAYING AND BURYING A FLEXIBLE SUBMARINE CABLE

A method comprising the steps of using a self-propelled cable-burying tractor (1) remotely controlled via a flexible control umbilical (2) and provided with at least one drum (6) for a flexible cable (7), controlling said cable-burying tractor from a first location (5) in order to lay and bury the flexible cable as far as a first predetermined point (P1), controlling said cable-burying tractor beyond said first predetermined point from a second location (10), and continuing to lay and bury the flexible cable as far as a second predetermined point (P2), one of said locations being on land (5) while the other is a surface vessel (10). The method is particularly suitable for laying and burying flexible cables such as optical cables, coaxial cables for analogue transmission, electrical cables and single or multiple flexible tubular ducts.

Power cable assembly device and a power cable provided with such a device

A power cable assembly device adapted to be arranged in the spaces between neighboring power cores of a power cable. The power cable assembly device includes an extruded profiled body made of a polymer material having a first, second, and third walls. The first wall being convex and having an exterior surface adapted to face a jacket of the power cable. The profiled body also having a chamber wall extending from the second to the third wall, defining a slit and adapted to receive a fiber optic cable.

Sealable communication cable connection assemblies

Communication device connection assemblies are described. The sealable connection assemblies are configured to provide water-tight connections for various data transmission elements, including cables, network devices, and computing devices. The connection assemblies may be used for various data transmission protocols, such as fiber optic connections. A compression element of the connection assembly may be configured to engage and compress a sealing element against a communication cable extending through the sealable connection assembly when a tension element is coupled to the inner body, thereby forming a seal between the sealable element and the communication cable. The connection assemblies may include a retainer body configured to form a grip or retention force with a communication cable sufficient to reduce and/or eliminate any forces on the communication cable (i.e., bending and/or straight pull forces) from being transferred to and/or otherwise effecting other components of the connection assembly, such as sealing elements thereof.

REPAIRING PROCESS OF SUBMARINE OPTICAL CABLE

PURPOSE: To shorten a repair work time, by drawing up a submarine cable constituting a unit cable which has provided a connecting part easily attachably and detachably, on both ends of the submarine cable of 1 piece length, onto board a ship when repairing, and switching and connecting the unit cable. CONSTITUTION: A submarine cable to which a submarine optical cable 1 of 1 piece length, having an attachalbe and detachable connecting part 2 on both its ends has been connected is laid. When repairing, a faulty unit cable 3' is searched by a laying vessel 3, is drawn up onto board the laying vessel 3 by a wreck releaser 4, the conncting part 2 of both the ends is detached, waterproof and pressure resistance treatment is performed to the terminal of a unit cable 1 having no fault, a display buoy 5 is connected to it, and it is sunk to the bottom of the sea. Subsequently, a new unit cable is carried, is connected to the connecting part with the display buoy 5 on board the ship, and is laid ...

REPAIRING METHOD FOR OPTICAL TRANSMISSION CABLE

PROBLEM TO BE SOLVED: To prevent connection loss due to the connection between different kinds of optical fibers from increasing when an optical transmission cable com prising hybrid fibers is repaired. SOLUTION: Two preliminary cables are used each of which has a 1st region composed of a bridge cable 11a for connection and a 2nd region composed of at least one or more kinds of fibers 3a and 3b; and a cable 15 for split insertion is formed and inserted into a repair region 6 so that both opposite surfaces of a breaking point 5 of the optical transmission cable 1 and both the end surfaces of the cable 15 for split insertion become connections between identical kinds of fibers and the 1st regions and 2nd regions of the preliminary cables are joined with each other in the cable 15 for split insertion. COPYRIGHT: (C)2004,JPO ...

VERFAHREN UND VORRICHTUNG ZUM KONTINUIERLICHEN VERLEGEN UND EINGRABEN EINER BIEGSAMEN LEITUNG UNTER WASSER

VERFAHREN UND VORRICHTUNG ZUR VERBINDUNG VON UNTERWASSERKABELN

Providing a subsea optical junction assembly for coupling fiber optic cables

A JUNCTION PLATE ASSEMBLY FOR A SUBSEA STRUCTURE

A power cable assembly device and a power cable provided with such a device

A power cable assembly device adapted to be arranged in the spaces between neighbouring power cores of a power cable, comprises an extruded profiled body (4) made of a polymer material and adapted to the cross-sectional shape and elongation of the power cable, said profiled body (4) comprising a first wall (6), a second wall (8) and a third wall (10), said first wall (6) being convex and having first and second opposite end portions (6a, 6b), the first wall (6) having an exterior surface (102) adapted to face a jacket of the power cable,said profiled body further comprising a chamber wall (18) extending from said second wall (8) to said third wall (10), said chamber wall (18) having an interior surface (100) defining a chamber (16), said profiled body (4) defining a slit (15) between said second wall (8) and said third wall (10) to said chamber(16), said chamber (16) being adapted to receive a fibre optic cable (30) via said slit (15). According to the invention, at least a portion of said ...

LOCATION AND MONITORING OF UNDERSEA CABLES

The present application described methods an apparatus for locating and/or monitoring subsea cables (101) having an optical fibre (105) deployed along its length. The optical fibre (105) is connected to a distributed acoustic sensing (DAS) interrogator unit to interrogate the optical fibre to provide a fibre optic DAS sensor. To locate the cable an acoustic stimulus is transmitted into the water from one or more known locations. The time of arrival of an acoustic signal matching the stimulus at the sensing portions of the DAS fibre can be detected and used to determine information about the location of those sensing portions to the known location. The DAS signals returns can also be monitored under ambient conditions to detect any signals indicative of likely damage to the cable.

Immersible connector for cables, has a conventional connector encased within a support and casing assembly

La présente invention concerne un dispositif pour la connexion d'au moins deux câbles (1, 2), destiné à être immergé. Selon l'invention, ce dispositif de connexion comporte : - une boîte de connexion usuelle (3) permettant de relier entre eux les fils ou fibres individuels constituant lesdits câbles (1, 2); - un porte-boîte (4) comprenant : . un support (6) sur lequel est fixée ladite boîte de connexion (3); . une paroi (8), par une face (81) de laquelle est porté ledit support (6), ladite paroi (8) et ledit support (6) ayant des dispositions générales orthogonales et ladite paroi (8), d'une part, débordant dudit support (6) et de ladite boîte de connexion (3) tout autour de ceux-ci, et, d'autre part, étant pourvue de passages traversants (9) pour lesdits câbles; et - une enceinte (5), apte à entourer ledit support (6) et ladite boîte de connexion (3) et pourvue d'une ouverture (17) susceptible d'être obturée de façon étanche par ladite paroi (8) du porte-boîte (4).

LOCATION AND MONITORING OF UNDERSEA CABLES

The present application described methods an apparatus for locating and/or monitoring subsea cables (101) having an optical fibre (105) deployed along its length. The optical fibre (105) is connected to a distributed acoustic sensing (DAS) interrogator unit to interrogate the optical fibre to provide a fibre optic DAS sensor. To locate the cable an acoustic stimulus is transmitted into the water from one or more known locations. The time of arrival of an acoustic signal matching the stimulus at the sensing portions of the DAS fibre can be detected and used to determine information about the location of those sensing portions to the known location. The DAS signals returns can also be monitored under ambient conditions to detect any signals indicative of likely damage to the cable.

Cable installation

Location and monitoring of undersea cables

Feedthrough connector

A subsea plug connector part 9 for a subsea wet-mateable connector comprising a receptacle connector part 8 and a plug connector part 9, the plug connector part comprising a plug back end 11, a plug front end 13 and an interface 12. The interface comprises a first cold separable joint element 20 at one end. The plug front end 13 comprises a second cold separable joint element 18. The first cold separable joint element 20 and second cold separable joint element 18 are adapted to join the interface 12 to the plug front end 13.

An underwater optical cable line laying system

Method and device for continuously laying and burying a flexible submarine cable

MONITORING OF POWER CABLES WITH DISTRIBUTED FIBRE OPTIC SENSING

This application relates to methods and apparatus for monitoring power cables (100) carrying multiple AC phases to detect deformation of the power cable. A distributed fibre optic interrogator unit (302) is used to interrogate a sensing optical fibre (301) coupled to the power cable to provide a measurement signal from each of a plurality of longitudinal sensing portions of the sensing optical fibre. An analyser (602) is configured to analyse the measurements signals to detect a characteristic of an imbalance in magnetic fields. The characteristic may be a signal component with a characteristic frequency related to the power frequency and number of AC phases, the sensing optical fibre may be sensitised to magnetic fields and the characteristic frequency may be 2n times the power frequency where n is the number of phases, e.g. six times the power frequency for three phase AC.

GEL CARTRIDGE FOR CONNECTION ASSEMBLY AND CONNECTION ASSEMBLIES COMPRISING SUCH A GEL CARTRIDGE

Une cartouche (50) comprend une enveloppe externe, partiellement remplie de gel électriquement isolant (56), et au moins une piste électriquement conductrice (52) immergée dans le gel isolant (56). Des ensembles de connexion comprenant au moins un demi-connecteur (10) et une telle cartouche (50) sont également décrits. A cartridge (50) includes an outer shell, partially filled with electrically insulating gel (56), and at least one electrically conductive track (52) submerged in the insulating gel (56). Connection assemblies comprising at least a half-connector (10) and such a cartridge (50) are also described.

GIMBAL CONNECTION STRUCTURE FOR CONNECTING UNDERSEA EQUIPMENT AND SUBMARINE CABLE

A gimbal connection structure for connecting undersea equipment and a submarine cable which includes an annular gimbal housing fixed to the end of the undersea equipment and having a pair of first holes, a gimbal ring having a pair of second holes and an arcuate elongated hole, and a gimbal having a first end formed with a third hole and a second end to which the submarine cable is connected. The pair of first pins are inserted in the first and second holes, respectively, and the gimbal ring is turnably connected to the gimbal housing. Further, the second pin is fixedly inserted in the third hole in the gimbal through the arcuate elongated hole in the gimbal ring. Thereby, the gimbal is turnably and slidably connected to the gimbal ring.

METHOD OF REPAIRING OPTICAL CABLE AND REPAIR CABLE PIECE USED FOR THE SAME

PROBLEM TO BE SOLVED: To provide a method of repairing optical fiber which can easily repair an optical fiber, and a repair cable piece that is used for the method. SOLUTION: If a failure occurs at a place 15 of DMF (+) 13a, a pair of optical cables is cut off at the same time as long as 2/3 cable length from a position (C) just close to a repeater including a failure point 15 in one relay span up to a connection point (A) with DMF (+):DMF (-), and a miniblock shown in (c) is inserted into the cut section and is connected to the remaining optical cable parts. Such an easy, simple work can repair optical cable connection that satisfies the relation: DMF (+):DMF (-)= 2:1. This can eliminate the needs for performing complex combination connection of the conventional DMF (+) and DMF (-) on a wiring and repair boat and also can standardize the repairing method. COPYRIGHT: (C)2004,JPO ...

An apparatus with substantially rigid support

An apparatus 10 for use subsea including a container having an aperture, a lid 12 securable to the container to cover the aperture, a printed circuit board (fig. 5; 84), at least one fibre-optic cable 18 connecting the printed circuit board to the lid and a substantiallyrigid support 14 locatable in the container, lid is able to isolate the inside of the container from fluid pressures of at least 1,000kPa, the rigid support has at least one upstanding member 17 around which one or more fibre-optics are locatable such that the smallest radius of a bend in the fibre-optics is greater than the minimum bend radius thereof. There may be a plurality of cards which may be digital processing cards (DPC) disposed in a subsea electronics module (SEM). The apparatus may have an internal pressure up to 200kPa to withstand pressures in excess of 40,000kPa ...

Subsea optical junction assembly for fibre optic cables

A system for use in a subsea environment includes at least one fibre optic cable 102, preferably in an umbilical line 112, for connection to surface equipment 106, and a subsea optical junction assembly 100, preferably including a coupler 122, connected to the at least one fibre optic cable. The system further includes subsea components, and plural fibre optic cables 104,105 connected to corresponding subsea components 114,115.

Bundle of cables, a method of laying cables and use of a securing means

A bundle of cables includes at least two underwater cables and a fastener for fastening the underwater cables together. The fastener is water-soluble, biologically decomposable and/or chemically decomposable. A method of laying at least two underwater cables simultaneously from a vessel and a method of using a water-soluble, biologically decomposable and/or chemically decomposable fastener to fasten at least two underwater cables together to form a bundle of cables are also described.

Verbessertes Sonarsystem für Ozeanboden.

Monitoring of power cables

A system and apparatus used to monitor a power cable 100, carrying multiple AC phases, in order to detect deformation of the multi-phase power cable. A distributed fibre optic interrogator unit (302, Fig 6) is used to interrogate a sensing optical fibre (301, Fig 6) coupled to the power cable to provide a measurement signal from each of a plurality of longitudinal sensing portions of the sensing optical fibre. An analyser (602, Fig 6) is configured to analyse the measurements signals to detect a characteristic of an imbalance in the magnetic fields induced by the multi-phase power cable. The characteristic may be a signal component with a characteristic frequency related to the power frequency and number of AC phases within the multi-phase cable. The sensing optical fibre may be sensitised to magnetic fields and may be coupled to a magnetostrictive material.

Monitoring of power cables

Pipeline with integrated fiber optic cable

Optical fibre installation in flexible riser

A method and apparatus for providing a fibre element are disclosed. The method includes the steps of opening a first control valve element (355) at a proximate end region of a first lumen (310) that extends along a flexible pipe (100), opening a first vent valve element (382) at a remote end region of a second lumen (320) that extends along the flexible pipe (100), providing a new fibre element along the second lumen (320) via an opening (350) at a proximate end region of the second lumen (320) and closing the first vent valve element (382) and the first control valve element (355).

Cable installation

PIPE-CONFORMING STRUCTURE

The present techniques are directed to systems and methods for forming a pipe- conforming structure. The pipe-conforming structure includes a polymer material and one or more optic fibers embedded within the polymer material. The polymer material is formed into a structure that is conformed to the shape of a pipe. A method includes forming a polymer material into a structure including an edge region and a center region. The center region has a greater thickness than the edge region. The method includes inserting one or more optic fibers into the polymer material.

Sealable communication cable connection assemblies

DEVICE OF CONNECTION IMMERGEABLE FOR CABLES

耐摩耗性海底ケーブル構造

... 外装ケーブルと外装のないケーブルの間に存在する重量/強度の差を埋める電気および/または光海底ケーブル構造が提供される。撚線の外装層(6)はスチールワイヤ(7)とポリマの充填材(8)の交互のストランドを具備している。そのようなケーブルは、水深2km以上の深さの水中に敷設されている期間中にそれに接合された外装のある重いケーブルの部分を支持するのに十分な強度を有しているが、外装のないケーブルが深い海中でそれを支持することができる程度に軽量である。 ...

Submarine optical system

Smart subsea pipeline with conduits

Pipeline segments can contain cables, such as communication cables (e.g., fiber optic cables) within insulation material surrounding the pipeline segments. Cables can be embedded within the insulation material, run through conduits embedded within the insulation material, placed in channels formed in the insulation material, or otherwise. Channels containing one or more cables can be filled with supplemental insulation material, thus securing the cables within the channels. Pipelines created as disclosed herein can enable data transfer between distant points without the need to lay fiber optic cable in addition to the pipeline. Further, fiber optic cable embedded thusly can be used to sense conditions in the pipeline, such as leaks, seismic activity, strain, and temperature information.

BUNDLE OF CABLES, A METHOD OF LAYING CABLES AND USE OF A SECURING MEANS

The present invention relates to a bundle (9; 90; 290; 390; 490; 590) of cables (11, 13, 15; 111, 113, 115; 211, 213, 215; 311, 313, 315; 411, 413, 415; 511, 513, 515; 611, 613, 615) comprising at least two underwater cables and a securing means (17; 117; 217, 217'; 317; 417; 519; 617) for fastening the underwater cables together. The securing means (17; 117; 217, 217'; 317; 417; 519) is water-soluble, biologically decomposable and/or chemically decomposable. The invention also relates to a method of laying at least two underwater cables simultaneously from a vessel and to a use of a water- soluble, biologically decomposable and/or chemically decomposable securing means (17; 117; 217, 217'; 317; 417; 519; 617) to fasten at least two underwater cables (11, 13, 15; 111, 113, 115; 211, 213, 215; 311, 313, 315; 411, 413, 415; 511, 513, 515; 611, 613, 615) together to form a bundle (9; 90; 290; 390; 490; 590) of cables.

BUNDLE OF CABLES, A METHOD OF LAYING CABLES AND USE OF A SECURING MEANS

The present invention relates to a bundle (9; 90; 290; 390; 490; 590) of cables (11, 13, 15; 111, 113, 115; 211, 213, 215; 311, 313, 315; 411, 413, 415; 511, 513, 515; 611, 613, 615) comprising at least two underwater cables and a securing means (17; 117; 217, 217'; 317; 417; 519; 617) for fastening the underwater cables together. The securing means (17; 117; 217, 217'; 317; 417; 519) is water-soluble, biologically decomposable and/or chemically decomposable. The invention also relates to a method of laying at least two underwater cables simultaneously from a vessel and to a use of a water- soluble, biologically decomposable and/or chemically decomposable securing means (17; 117; 217, 217'; 317; 417; 519; 617) to fasten at least two underwater cables (11, 13, 15; 111, 113, 115; 211, 213, 215; 311, 313, 315; 411, 413, 415; 511, 513, 515; 611, 613, 615) together to form a bundle (9; 90; 290; 390; 490; 590) of cables.

SUBMARINE OPTICAL TRANSMISSION APPARATUS AND SUBMARINE OPTICAL COMMUNICATION SYSTEM

An object to provide a submarine optical transmission apparatus capable of efficiently housing optical components and electric components. A submarine optical transmission apparatus includes a case, an electric component housing unit, and an optical component housing unit. The electric component housing unit and the optical component housing unit can house either or both of an optical component and an electric component and are stacked in a Z-direction. The case can house the electric component housing unit and the optical component housing unit that are stacked, and a longitudinal direction thereof is an X-direction.

Apparatus, system and method enabling multiplexed arrangement of optical fiber for sensing of operating conditions within a structural member

Embodiments of the present invention provide a unique new approach to generating operating condition information used for assessing flow assurance and structural integrity. More specifically, apparatuses, systems and methods configured in accordance with embodiments of the present invention enable multiplexed arrangement of optical fiber for sensing of operating conditions within a structural member and utilize fiber optic sensors for enabling monitoring of operating condition information within one or more elongated tubular members. To this end, fiber optic sensors are strategically placed at a plurality of locations along a length of each elongated tubular member thereby allowing critical operating conditions such as strain, temperature and pressure of the elongated tubular member and/or a fluid therein to be monitored. A multiplexing unit is used for allowing selective configuration of individual lengths of optical fiber for creating one or more contiguous optical fiber structures.

Pipeline with integrated fiber optic cable

Apparatus and methods for integrating a fiber optic cable (116) with a pipeline (104) are described. An example pipeline having an integrated fiber optic cable includes a plurality of pipe sections (119a, 119b), where each of the pipe sections has a thermally insulating outer layer (200, 202) and ends not covered by the outer layer. The ends of each of the pipe sections are welded to respective ends of other pipe sections to form field joints (111a) at the welded ends. The pipeline also includes a fiber optic cable, where first portions (120) of the fiber optic cable are in contact with some of the pipe sections at some of the field joints and where second portions of the fiber optic cable between the first portions are fixed to the outer layer. A coating is applied to cover each of the first portions of the fiber optic cable to integrate the fiber optic cable with the pipeline.

A JUNCTION PLATE ASSEMBLY FOR A SUBSEA STRUCTURE

Subsea cable bundle installation

A method of installing a subsea cable bundle (9) comprising an umbilical (7) and at least one direct current and fibre optic (DCFO) cable (2) attached to an outside of the umbilical. The method comprises connecting a first end of the cable bundle to a pulling head (figure 3B, 13) lowering the first end of the cable bundle into the sea, and connecting the pulling head to a winch cable (figure 3B, 16) of a winch (figure 3B, 15). The winch is located on a platform (figure 3B, 3) and the winch cable extends from the platform into the sea through a J-tube (Figure 3B, 10), using the winch to pull the first end of the cable bundle up to the platform through the J-tube. The method further comprises laying the cable bundle on the seafloor, and at a target location, at or close to a subsea structure (8), detaching the DFCO cable from the umbilical and connecting the DCFO cable and the umbilical at their second ends to the subsea structure. A DCFO cable (figure 4) is also specified.

FIBER OPTIC CABLE, DISPENSER AND METHOD

PIPE-CONFORMING STRUCTURE

The present techniques are directed to systems and methods for forming a pipe- conforming structure. The pipe-conforming structure includes a polymer material and one or more optic fibers embedded within the polymer material. The polymer material is formed into a structure that is conformed to the shape of a pipe. A method includes forming a polymer material into a structure including an edge region and a center region. The center region has a greater thickness than the edge region. The method includes inserting one or more optic fibers into the polymer material.

POWER CABLE FILLER DEVICE AND POWER CABLE COMPRISING THE SAME

The present disclosure relates to a power cable filler device (1) adapted to bear against a first power core and a second power core in a power cable. The power cable filler device (1) comprises a first arced wall (3) which defines a portion of a first circle (9) having a first diameter, a second arced wall (5) and a third arced wall (7), each defining a portion of a second circle (11) having a second diameter which is smaller than the first diameter, which first arced wall (3) has a first end (3a) connected to a first end (5a) of the second arced wall (5), and which first arced wall (3) has a second end (3b) connected to a first end (7a) of the third arced wall (7), wherein the second arced wall (5) has a second end (5b) and the third arced wall (7) has a second end (7b) adjacent each other and defining a slit (13), whereby a chamber is formed between the first arced wall (3), the second arced wall (5) and the third arced wall (7), a first partitioning wall (17a) in the chamber, extending ...

A method and device for laying and metalworking continuous flexible sea line

Il est caractérisé en ce qu'il consiste à utiliser une ensouilleuse (1) automotrice et commandée à distance par l'intermédiaire d'un flexible de commande (2), ladite ensouilleuse portant au moins une bobine (6) de conduite flexible (7), à commander ladite ensouilleuse à partir d'un site (5) de manière à poser et ensouiller la conduite flexible sur une longueur jusqu'en un premier point prédéterminé (P1 ), à commander ladite ensouilleuse au-delà dudit premier point prédéterminé, à partir d'un autre site (10), puis à continuer la pose et l'ensouillage de la conduite flexible jusqu'en un deuxième point prédéterminé (P2 ), l'un des sites étant la terre (5) et l'autre constitué par un engin flottant (10). Application notamment à la pose et à l'ensouillage simultanés de conduites flexibles telles que câbles optiques, câbles coaxiaux pour transmissions analogiques, câbles électriques, conduites tubulaires flexibles simples ou multiples.

alojamento de emenda de alta pressão

Pressure Resistant Media Converter Apparatus

A hermetically sealed media converter apparatus configured to operate in harsh high-pressure differential environments, such as deep marine environments, and oil and gas. A hermetically sealed media converter apparatus is provided having a vessel forming an inner chamber that is hermitically sealed from surrounding ambient environment outside the vessel. Media conversion circuitry is contained within the inner chamber. At least one hermetic electrical feedthrough is mounted on the vessel enabling a transmit wire and a receive wire to pass therethrough and connect to the media conversion circuitry, while maintaining the hermetic seal of the inner chamber of the vessel from the surrounding ambient environment. Similarly, a hermetic optical feedthrough also is mounted on the vessel enabling an optical fiber to pass therethrough and connect to the media conversion circuitry, while maintaining the hermetic seal of the inner chamber of the vessel from the surrounding ambient environment.

Vented optical tube

Vented optical tube. At least some illustrative embodiments are conduits comprising a tube having a wall defining an interior volume of the tube. One or more optical fibers are disposed within the interior volume. The wall includes a plurality of vents passing from an outer surface of the wall to the interior volume, the plurality of vents disposed along a length of the tube, and wherein the vents are configured to convey a fluid in contact with the outer surface into the interior volume of the tube.

Optimization of size on umbilical repair joints for deep water

The present invention provides an assembly for splicing and/or repairing an umbilical (4), said assembly comprises two terminal bend restrictors (3) and two strain terminators (1), each terminal bend restrictor (3) comprises at least two interconnected modules (14), a connecting end (10), and a free end (11), and the strain terminators (1) comprise a strain receiving end (12) and a strain providing end (13), each of said strain receiving ends (12) is connected to one of the connecting ends (10) of the terminal bend restrictors (3), wherein the assembly comprises an intermediate bend restrictor (5) comprising at least two interconnected modules (14) and two connecting ends, and that the two strain terminators (1) are connected at their strain providing ends (13) to separate connecting ends of the intermediate bend restrictor (5), and the intermediate bend restrictor (5) is dimensioned to withstand tensile strain from the connected strain terminators (1).

LAYING OF SUBMARINE CABLE

PURPOSE: To prevent a cable from damaging by covering the outermost layer of a newly installed submarine cable with the same material as that of the outermost layer of an existing submarine cable near the intersection of the newly installed cable and the existing cable. CONSTITUTION: When a newly installed submarine cable 4 is laid to cross an existing submarine cable 1, if the material of the outermost layer of the cable 1 is different from that of the cable 4, a covering 5 of the same material as that of the outermost layer of the cable 1 is provided on the cable 4. Since the parts to be connected are formed of the same material, there is no possibility that either one of both is worn. COPYRIGHT: (C)1989,JPO&Japio ...

A junction plate assembly for a subsea structure

A junction plate assembly for a subsea structure having a first junction plate with a plurality of control connections contained therein, a second junction plate with a second plurality of control connections contained therein, and a connector extending generally centrally of the first junction plate for engaging a receptacle of the second junction plate. The first junction plate has an umbilical cable connected to the control connections. The connector is a shaft which extends through the first junction plate and has one end extending into the receptacle of the second junction plate. The end of the shaft has an external acme thread in mating engagement with an internal acme thread of the receptacle. A handle is connected to an opposite end of the shaft for rotating the shaft. The control connections may be either hydraulic or electrical connections.

Mounting arrangement for offshore structure

A mounting combination for mounting a longitudinally extensive protection apparatus 200 to an offshore structure is disclosed. The mounting combination comprises: a first combination part 136 to which an upper end portion of the a longitudinally extensive protection apparatus 200 is securable in use and a second combination part 128 securable in use to the offshore structure 520, first and second combination parts 136, 128 each including a complementary spherical surface 130, wherein the spherical surface 130 of the first combination part 136 rests in use on the spherical surface of the second combination part 128 such that the first combination part 136 is supported by the second combination part 128, the spherical surface 130 of the second combination part 128 contains an aperture 142 configured to allow passage therethrough of the longitudinally extensive protection apparatus 200, and wherein the mounting combination can in use accommodate angular movement of the a longitudinally extensive ...

Mounting arrangement for offshores structures

Optical cable repair method and repair cable piece used therefor

In a method of repairing at least one optical cable, in one repeating span between two adjacent repeaters, which is constituted by a first optical fiber exhibiting positive wavelength dispersion with respect to an optical signal to be transmitted and a second optical fiber which is connected in series with the first optical fiber and exhibits negative wavelength dispersion with respect to the optical signal, an optical cable portion, in the repeating span, which includes a fault point of at least an optical cable in one direction and has a fixed length from a point near one of two adjacent repeaters is cut. At least one repair cable piece constituted by a third optical fiber exhibiting the same positive wavelength dispersion as that of the first optical fiber and a fourth optical fiber which is connected in series with the third optical fiber and exhibits the same negative wavelength dispersion as that of the second optical fiber is inserted and connected in the cut optical cable portion ...

Mockup, Mockup System, Underwater Vessel or Sinker, together with a Transfer Mechanism, Vessel and Training Method

The invention relates to a mockup with an optical transmission path, which optically connects the optical entrance to the optical exit, wherein an optical attenuator is arranged in the optical transmission path, wherein an optical condition of the transmission path is adjusted by means of the optical attenuator so that an optical transmission behavior of a wound optical fiber is simulated. The invention also relates to a mockup system, underwater vessel and/or sinker, a transfer mechanism, and a vessel, together with a training method with a mockup, which is deployed in an underwater vessel and/or in a sinker. 1. A mockup for simulating optical transmission behavior of a wound fiber-optic cable comprising an optical entrance , an optical exit and an optical transmission path , which optically connects the optical entrance with the optical exit , an optical attenuator arranged in the optical transmission path , wherein an optical condition of the transmission path is adjusted by means of the optical attenuator so that an optical transmission behavior of a wound fiber-optic cable is simulated.2. The mockup according to claim 1 , characterized in that the optical transmission path features a partial or complete fiber-optic cable.3. The mockup according to claim 2 , characterized in that the mockup further comprises strain relief elements for the fiber-optic cable claim 2 , whereby claim 2 , in particular claim 2 , the fiber-optic cable is designed so as to be strain-free.4. The mockup according to claim 1 , characterized in that the attenuator comprises an active attenuator and/or passive attenuator.5. The mockup according to claim 4 , characterized in that the attenuator comprises a passive attenuator claim 4 , and the optical condition is adjusted by means of the passive attenuator bychanging a refractive index and/or a light absorption and/or a light diffusion and/orstipulating a number of modes and/orchanging a critical angle in a fiber-optic cable.6. The mockup ...

Method of repairing optical submarine cable and repair cable used in the method

A method of repairing an optical transmission cable (1, 21) which is broken at a breakage point (5, 25), includes the steps of (a) preparing a spare cable (11, 12, 21-24) which includes a first area comprised of a bridge fiber (11a, 21a, 22a) and a second area comprised of at least one kind of fiber (3a, 3b), (b) fabricating a repair cable (15, 35) through the use of the even number of the spare cable (11, 12, 21-24) such that the repair cable has opposite end surfaces having the same fiber arrangement as that of exposed surfaces (1a, 1b, 21a, 21b) of the optical transmission cable and that first areas are spliced to each other and the second areas are spliced to each other in the repair cable, and (c) inserting the repair cable into the optical transmission cable at the breakage point.

SYSTEM AND METHOD FOR IDENTIFYING OBJECT

PURPOSE: To quickly search an unknown object provided in or on the bottom bed of the sea or in the sea by predeciding a reflected and scattered signal generated from a basic object and comparing the signal with a reflected and scattered signal from the unknown object. CONSTITUTION: A self-traveling remotely-operated vehicle(ROV) 1 is connected to a mother ship on the surface of the sea through a connecting cable 2 for control and communication. The ROV 1 is equipped with a sonar transmitter 3 and a sonar receiver 4. It is considered that a cable 5 to be searched is in a nonconducting state and no communication signal nor electromagnetic signal is inducted in the cable 5 in any form. Then the unique reflected and scattered signal which is generated from a basic object composed of a cable, etc., when a sonar signal is made incident to the cable 5 is decided in advance and an unknown object, such as a cable, etc., is searched by comparing the reflected and scattered signal from the basic object ...

Providing a subsea optical junction assembly for coupling fiber optic cables

Smart subsea pipeline with conduits

Method and apparatus for joining underwater cable

Monitoring of power cables

Method and apparatus for joining underwater cable

Method and device for continuously laying and burying a flexible submarine cable

Cartridge of gel for a connection set and connection sets comprising such a cartridge of gel

A cartridge includes an outer case, partially filled with electrically insulating gel, and at least one electrically conductive track submerged in the insulating gel. Connection sets including at least one connector half and such a cartridge are also disclosed.

COMPOSITE CABLE ASSEMBLY WITH NEUTRAL BUOYANCY

An Above Bottom Fiber (ABF) cable includes an elongated fiber cable having microspheres adhered to the ABF by an adhesive lightly coated to the outer surface of the ABF. The elongated fiber is negatively buoyant while the microspheres and adhesives are positively buoyant, resulting in the ABF being controllably buoyant in a fluid environment. Anchor lines with optional anchor weights are attached to the fiber cable periodically to prevent the fiber cable from drifting. The microspheres detach slowly from the fiber cable resulting in the ABF sinking. All components of the ABF are biodegradable. 1. An elongated cable assembly adapted for use in a water environment having an upper boundary and a lower boundary , comprising:an elongated cable having a naturally negative buoyance in a water environment, the elongated cable having an outer surface;microelements having a positive buoyancy attached to the outer surface of the elongated cable; andthe quantity of the microelements per unit length of the elongated cable being chosen such that the assembly is neutrally or positively buoyant at a suspension depth in the water environment.2. An elongated cable assembly in accordance with claim 1 , wherein the microelements are microspheres.3. An elongated cable assembly in accordance with claim 2 , wherein the microspheres are flour-like ceramic powder.4. An elongated cable assembly in accordance with claim 1 , wherein the microelements are coated on the outer surface of the elongated cable by an adhesive.5. An elongated cable assembly in accordance with claim 1 , wherein the adhesive has a positive buoyancy.6. An elongated cable assembly in accordance with claim 4 , wherein the adhesive is organic.7. An elongated cable assembly in accordance with claim 4 , wherein the elongated cable and the adhesive is biodegradable.8. An elongated cable assembly in accordance with claim 1 , further comprising anchor lines periodically attached along the elongated cable to keep the elongated ...

FLUSH AND FILL TOOL FOR SUBSEA CONNECTORS

A flush and fill tool is configured for releasable mating engagement with a bulkhead mounted connector unit which has an optical contact chamber containing optical fluid. The unit has an outer shell with an open forward end containing a seal assembly designed for sealed engagement with a corresponding seal assembly at the forward end of the mating connector unit. An optical fluid fill reservoir and a capture reservoir for used optical fluid located in the housing are associated with a fill pin and a return pin, respectively, which extend through aligned bores in the seal assemblies into the optical contact chamber in the mated condition. A spring loaded plunger engaged in the fill reservoir injects optical fluid from the fill reservoir through a passageway through the fill pin and into the optical contact chamber, ejecting used oil from the chamber through a passageway in the return pin into the capture reservoir. 1. A flush and fill tool for a bulkhead mounted optical or electro-optical connector unit , comprising:an outer shell having a rear end, a forward end portion, and an open forward end;a front seal assembly in the forward end portion of the outer shell configured for sealing engagement with a corresponding connector seal assembly at the forward end of a mating subsea connector unit and having at least first and second seal openings configured for alignment with corresponding openings in the connector seal assembly in a mated condition of the tool and connector unit;the seal openings in the front seal assembly being sealed in an unmated condition of the tool;a flush and fill assembly mounted in the outer shell behind the seal assembly, the flush and fill assembly comprising a transverse wall, at least a fill pin and a return pin projecting forward from the transverse wall and aligned with the respective first and second seal openings in the seal assembly at least in the mated condition of the tool, the fill and return pins each having a through bore, a fill ...

Coupling Polymeric Components to One Another Utilizing Electromagnetic Energy

A method of coupling polymeric components utilizing electromagnetic energy is disclosed. The method can include obtaining a first component having a first coupling portion, a second component having a second coupling portion, and a susceptor. The method can also include mating the first and second components such that the susceptor is proximate the first and second coupling portions. In addition, the method can include applying electromagnetic energy to the susceptor. The susceptor can convert the electromagnetic energy to heat, which can melt portions of the first and second coupling portions about the susceptor to couple the first and second components to one another upon solidification.

HIGH PRESSURE FULL CABLE STRENGTH MIDSPAN ACCESS SPLICE HOUSING

A pressure housing assembly according to exemplary aspects includes: a saddle assembly configured to encase a mid-point access section of a cable; and a pressure housing configured to be mounted on the saddle assembly. The saddle assembly has a first cable SSTL tube opening where a first seal member is provided; and a second cable SSTL tube opening where a second seal member is provided. The pressure housing has a corresponding first cable SSTL tube opening where a third seal member is provided; a second cable SSTL tube opening where a fourth seal member is provided; and a port configured to allow at least one penetrator to be inserted therethrough. The saddle assembly comprises a seal block configured to at least partially surround the mid-point access section of the cable. 1. A pressure housing assembly comprising:a saddle assembly configured to encase a midpoint access section of a cable; and the saddle assembly comprises a first cable component opening configured to allow a first cable component to be inserted therethrough, a first seal member provided at the first cable component opening;', 'the saddle assembly comprises a second cable component opening configured to allow a second cable component to be inserted therethrough, a second seal member provided at the second cable component opening;', 'the pressure housing comprises a first opening configured to allow the first cable component to be inserted therethrough, a third seal member provided at the first opening;', 'the pressure housing comprises a second opening configured to allow the second cable component to be inserted therethrough, a fourth seal member provided at the second opening;', 'the pressure housing comprises a third opening configured to allow at least one interconnect member to be inserted therethrough; and', 'the saddle assembly comprises a seal block configured to at least partially surround the midpoint access section of the cable., 'a pressure housing configured to be mounted on the ...

Harsh Environment Connector With Seal Closure Assisting Device

An underwater rolling seal connector assembly has releasably mateable plug and receptacle units with one or more rolling seals mounted in front faces of receptacle and plug units. The rolling seals are rotatable back and forth between a closed position sealing one or more chambers within the respective units which contain one or more contacts and an open position in which bores through the seals are open to allow contacts in one unit to pass through the seal openings and engage contact in the other unit. Actuators automatically rotate the rolling seals into the open position during mating and back into the closed position on de-mating. At least one actuator assisting device is located in at least one of the units and associated with the rolling seal in that unit to bias the seal back to the closed position during de-mating. 1. A connector assembly , comprising:a receptacle unit having a rear end, a front end, and a longitudinal axis;at least one contact chamber in said receptacle unit containing at least one receptacle contact;the front end of the receptacle unit having at least one receptacle recessed seat having opposite first and second ends;at least one receptacle rolling seal movably mounted in said receptacle recessed seat, the rolling seal having at least one through bore, and being movable in a non-axial direction relative to said receptacle unit between a first, closed position in which said through bore is offset from said receptacle bore and the end of said receptacle bore is sealed, and a second, open position in which said through bore is aligned with said receptacle contact;a plug unit releasably mateable with the receptacle unit, the plug unit having a longitudinal axis and a front end which engages with the front end of the receptacle unit during mating, and at least one plug contact which projects through the through bore into the receptacle unit to contact the receptacle contact when the units are mated and the receptacle rolling seal is in the ...

TUBE REATTACHMENT

Tube reattachment. At least some illustrative embodiments are including a method exposing a first optical fiber and a second optical fiber disposed within an interior volume of a first tube. A splice is formed between the first optical fiber and a third optical fiber, the splice joining an end of the first optical fiber and an end of the third optical fiber. A second tube is disposed the first, second, third optical fibers and the splice between the first and third optical fibers, wherein an end of the second tube adjoins an end of the first tube to form a structure comprising either an overlapping structure; or an abutting structure. 1. A method comprising:exposing a first optical fiber and a second optical fiber disposed within an interior volume of a first tube;forming a splice between the first optical fiber and a third optical fiber, the splice joining an end of the first optical fiber and an end of the third optical fiber; an overlapping structure; and', 'an abutting structure., 'wherein an end of the second tube adjoins an end of the first tube to form a structure selected from the group consisting of, 'disposing a second tube about the first, second, third optical fibers and the splice between the first and third optical fibers;'}2. The method of wherein the first tube comprises a plastic.3. The method of wherein the first tube comprises a wall defining the interior volume claim 2 , the exposing comprising:severing the wall of the first tube, the severing forming a severed portion of the first tube; andremoving the severed portion of the first tube from about the first and second optical fibers.4. The method of wherein the second tube comprises a helical preform configured to conform to a groove defined by a plurality of cable members within a sensor cable.5. The method of wherein each of the plurality of cable members is selected from the group consisting of:a floodable optical fiber conduit having one or more vents in a wall thereof;a strength member; anda ...

VENTED OPTICAL TUBE

Vented optical tube. At least some illustrative embodiments are conduits comprising a tube having a wall defining an interior volume of the tube. One or more optical fibers are disposed within the interior volume. The wall includes a plurality of vents passing from an outer surface of the wall to the interior volume, the plurality of vents disposed along a length of the tube, and wherein the vents are configured to convey a fluid in contact with the outer surface into the interior volume of the tube. 1. An apparatus comprising: a tube having a wall defining an interior volume of the tube;', 'wherein the vents are configured to convey a fluid in contact with the outer surface into the interior volume of the tube.', 'the wall includes a plurality of vents passing from an outer surface of the wall to the interior volume, the plurality of vents disposed along a length of the tube; and'}, 'one or more optical fibers disposed within the interior volume of the tube; wherein], 'a conduit including2. The apparatus of wherein the tube includes an end configured to convey fluid into the interior volume of the tube.3. The apparatus of wherein the tube comprises a plastic selected from the group consisting of:polypropylene; andpolyvinylidene fluoride (PVDF).4. The apparatus of wherein the tube comprises a metal.5. The apparatus of wherein the metal comprises stainless steel.6. The apparatus of wherein the tube is helicoidally disposed about a central axis of a sensor cable.7. The apparatus of wherein a size of the vents is configured to provide a volumetric flow rate into the interior volume of greater than or equal to about 1000 cubic millimeters/sec.8. The apparatus of wherein the one or more optical fibers comprise a buffer layer disposed on an outer surface of a primary polymer coating of the optical fiber.9. The apparatus of wherein the vents have a diameter equal to or greater than about 20 micrometers.10. The apparatus of wherein the diameter of the vents is greater than ...

Pipe-Conforming Structure

The present techniques are directed to systems and methods for forming a pipe-conforming structure. The pipe-conforming structure includes a polymer material and one or more optic fibers embedded within the polymer material. The polymer material is formed into a structure that is conformed to the shape of a pipe. A method includes forming a polymer material into a structure including an edge region and a center region. The center region has a greater thickness than the edge region. The method includes inserting one or more optic fibers into the polymer material.

STAGGERED OPTICAL FIBER SPLICES

At least some illustrative embodiments are apparatus including a tube having a wall defining an interior volume, first and second optical fibers disposed within the interior volume and the first and second optical fibers joined at a first splice. Also included are third and fourth optical fibers disposed within the interior volume, the third and fourth optical fibers joined at a second splice. The first splice and the second splice have an axially spaced-apart relationship within the interior volume of the tube. 1. An apparatus comprising:a tube having a wall defining an interior volume;first and second optical fibers disposed within the interior volume, the first and second optical fibers joined at a first splice;third and fourth optical fibers disposed within the interior volume, the third and fourth optical fibers joined at a second splice, wherein the first splice and the second splice have an axially spaced-apart relationship within the interior volume of the tube.2. The apparatus of wherein the spaced-apart relationship of the first and second splices comprises a stagger length equal to or greater than about 3 centimeters.3. The apparatus of wherein the interior volume has a diameter less than a combined width of the first splice and the second splice when set axially side-by-side.4. The apparatus of further comprising a sleeve disposed about each of the first and second splice.5. The apparatus of wherein a diameter of the sleeve is greater than one-half the diameter of the interior volume.6. The apparatus of wherein the tube comprises a metal.7. The apparatus of wherein the metal comprises a non-corrosive metal.8. The apparatus of wherein the non-corrosive metal comprises stainless steel.9. The apparatus of wherein the tube comprises a plastic.10. A cable comprising:an outer jacket having a wall defining an interior volume of the outer jacket; a first optical fiber disposed within the interior volume of the tube and a second optical fiber disposed within the ...

OPTICAL FIBRE INSTALLATION IN FLEXIBLE RISER

A method and apparatus for providing a fibre element are disclosed. The method includes the steps of opening a first control valve element () at a proximate end region of a first lumen () that extends along a flexible pipe (), opening a first vent valve element () at a remote end region of a second lumen () that extends along the flexible pipe (), providing a new fibre element along the second lumen () via an opening () at a proximate end region of the second lumen () and closing the first vent valve element () and the first control valve element (). 1. A method of providing a fibre element along a region of a flexible pipe , comprising the steps of:opening a first control valve element at a proximate end region of a first lumen that extends along a flexible pipe;opening a first vent valve element at a remote end region of a second lumen that extends along the flexible pipe;providing a new fibre element along the second lumen via an opening at a proximate end region of the second lumen; andclosing the first vent valve element and the first control valve element.2. The method as claimed in claim 1 , further comprising the steps of:opening the first vent valve element by providing a positive pressure, above a vent valve only positive pressure threshold, in the first lumen.3. The method as claimed in claim 1 , further comprising the steps of:closing the first vent valve element by providing a pressure in the first lumen less than the vent valve only positive pressure threshold.4. The method as claimed in claim 1 , further comprising the steps of:providing the new fibre element by pumping a flow of liquid along the second lumen from the proximate region to the remote end region and entraining a fibre element with the flow of the liquid at the proximate end region.5. The method as claimed in claim 1 , further comprising the steps of:purging the second lumen with a purge fluid subsequent to the step of providing the fibre element along the second lumen.6. The method as ...

HIGH PRESSURE SPLICE HOUSING

A pressure housing apparatus including a first cable termination shell, a housing connected to the first cable termination shell, a pressure vessel slide shell provided to the hollow housing, a cable termination assembly oriented within the housing, a plurality of pass through widows provided from the interior of the housing to the splice trays, and a plurality of circumferentially oriented splice trays provided to the cable termination assembly configured for receiving fiber tubes. 1. A pressure housing apparatus comprising:a first cable termination shell;a housing connected to said first cable termination shell;a pressure vessel slide shell provided around said housing;a cable termination assembly provided within said housing; anda splice tray.2. The pressure housing apparatus of claim 1 , further comprising a second cable termination shell.3. The pressure housing apparatus of claim 1 , further comprising a flange provided on said first cable termination shell.4. The pressure housing apparatus of claim 1 , further comprising a pulling mechanism provided on said housing.5. The pressure housing apparatus of claim 1 , further comprising a plurality of circumferentially oriented splice trays.6. The pressure housing apparatus of claim 1 , wherein the interior of the pressure vessel slide shell is configured with at least one pass through window.7. The pressure housing apparatus of claim 1 , wherein the pressure vessel slide shell is cylindrical.8. The pressure housing apparatus of claim 1 , wherein the pressure vessel slide shell is provided with a polyurethane claim 1 , polyethylene claim 1 , or other polymer type overmold.9. The pressure housing apparatus of claim 1 , further comprising:an outer layer of fiber tubes;an inner layer of fiber tubes;an outer armored wedge positioned within the cable termination shell;an inner armored wedge;an inner jacket seal and a plurality of o-rings;a first layer cable jacket grip; anda plurality of circumferentially oriented splice ...

SUBMERSIBLE PASSIVE OPTICAL MODULE AND SYSTEM

A submersible optical module and system to contain and protect fiber optic cables within a splice tray. Access holes on the module allow for an entry point and exit point of the optical fibers. Once set up with the module cavity containing the desired fiber optic cables, the remaining void space of the module cavity is filled with an epoxy creating a protective seal and barrier to provide superior protection to fiber optic cables from moisture. 1. A submersible passive optical module system comprising:a module base;a module top;an epoxy; anda plurality of optical fibers;wherein said module base is capable of holding the optical fibers and the epoxy when the module top is fixedly attached to the base.2. A submersible passive optical module system comprising:a module base;a module top;an epoxy;a plurality of optical fibers; anda splice tray;wherein said module base is capable of holding the optical fibers and the epoxy when the module top is fixedly attached to the base.3. A method of constructing a submersible passive optical module system comprising:constructing a module base of sufficient size wherein said module base has a cavity capable of housing a desired amount of optical fibers;constructing a module top wherein said module top is capable of fitting on the module base and creating a closed seal;placing the optical fibers in the module base in a desired configuration;placing the module top on the module base; andfilling the cavity in the module base with an epoxy material wherein the module top and the module base together filled with the epoxy material form a submersible module.4. A method of constructing a submersible passive optical module system comprising:constructing a module base of sufficient size wherein said module base has a cavity capable of housing a desired amount of optical fibers;constructing a module top wherein said module top is capable of fitting on the module base and creating a closed seal;placing the optical fibers in the module base in a ...

SUBMARINE CABLE ARCHITECTURE WITH REDUNDANCY FOR FACILITATING SHARED LANDING SITE

An undersea fiber optic cable architecture including a beach manhole (BMH) installed at a terrestrial site, a terrestrial station connected to the BMH by a terrestrial fiber optic cable, a first landing cable extending from the BMH into territorial waters adjacent the terrestrial site and connected to a first enhanced branching unit (EBU) located in the territorial waters, a second landing cable extending from the BMH into the territorial waters and connected to a second EBU located in the territorial waters, a recovery path cable connecting the first EBU to the second EBU, a first trunk cable extending from the first EBU into international waters, and a second trunk cable extending from the second EBU into the international waters. 1. An undersea fiber optic cable architecture comprising:a beach manhole (BMH) installed at a terrestrial site;a first enhanced branching unit (EBU) located in territorial waters adjacent to the terrestrial site;a second EBU located in the territorial waters adjacent to the terrestrial site;a first landing cable extending from the BMH and connected to the first EBU;a second landing cable extending from the BMH and connected to the second EBU;a recovery path cable connecting the first EBU to the second EBU;a first trunk cable extending from the first EBU into international waters; anda second trunk cable extending from the second EBU into the international waters.2. The undersea fiber optic cable architecture of claim 1 , wherein the first EBU includes one or more optical switches for selectively routing signal traffic on the first trunk cable to the first landing cable or the recovery path cable.3. The undersea fiber optic cable architecture of claim 1 , wherein the second EBU includes one or more optical switches for selectively routing signal traffic on the second trunk cable to the second landing cable or the recovery path cable.4. The undersea fiber optic cable architecture of claim 1 , further comprising a terrestrial station ...

BUNDLE OF CABLES, A METHOD OF LAYING CABLES AND USE OF A SECURING MEANS

A bundle of cables includes at least two underwater cables and a fastener for fastening the underwater cables together. The fastener is water-soluble, biologically decomposable and/or chemically decomposable. A method of laying at least two underwater cables simultaneously from a vessel and a method of using a water-soluble, biologically decomposable and/or chemically decomposable fastener to fasten at least two underwater cables together to form a bundle of cables are also described. 117-. (canceled)18. A bundle of cables , comprising:at least two underwater cables;an underwater power cable; anda fastener for fastening the underwater cables together,wherein the fastener is water-soluble, biologically decomposable by bacterial or fungal action and/or chemically decomposable by hydrolysis.19. The bundle of cables according to claim 18 , wherein the bundle comprises an underwater fiber optical cable.20. The bundle of cables according to claim 18 , wherein the fastener is an adhesive tape.21. The bundle of cables according to claim 18 , wherein the fastener is a strand claim 18 , cord claim 18 , belt or rope.22. The bundle of cables according to claim 18 , wherein the fastener is woven.23. The bundle of cables according to claim 18 , wherein the fastener is non-woven.24. The bundle of cables according to claim 18 , wherein the fastener is wrapped around the bundle of cables.25. The bundle of cables according to claim 18 , wherein the fastener is braided or interweaved with the cables to form a structure in which the cables are fastened together such that there is a gap between adjacent cables which corresponds to the thickness of the fastener.26. The bundle of cables according to claim 18 , wherein the fastener is a clamp.27. The bundle of cables according to claim 18 , wherein the fastener comprises a thermoplastic polymer.28. The bundle of cables according to claim 27 , wherein the fastener comprises polyglycolic acid.29. The bundle of cables according to claim 18 , ...

Location and Monitoring of Undersea Cables

The present application described methods an apparatus for locating and/or monitoring subsea cables ( 101 ) having an optical fibre ( 105 ) deployed along its length. The optical fibre ( 105 ) is connected to a distributed acoustic sensing (DAS) interrogator unit to interrogate the optical fibre to provide a fibre optic DAS sensor. To locate the cable an acoustic stimulus is transmitted into the water from one or more known locations. The time of arrival of an acoustic signal matching the stimulus at the sensing portions of the DAS fibre can be detected and used to determine information about the location of those sensing portions to the known location. The DAS signals returns can also be monitored under ambient conditions to detect any signals indicative of likely damage to the cable.

Harsh Environment Connector With Rolling Seals

An underwater rolling seal connector assembly has releasably mateable connector units with one or more rolling seals mounted in front faces of units. The rolling seals are rotatable back and forth between a closed position sealing one or more chambers within the respective units which contain one or more contacts and an open position in which bores through the seals are open to allow contacts in one unit to pass through the seal openings and engage contact in the other unit. A shell of one connector unit has inwardly facing cam formations and each rolling seal has outwardly directed eccentric rotators configured for engagement with respective cam formations on mating and de-mating of the connector units, whereby travel of the respective rotators along the respective cam formations during mating and de-mating rotates the rolling seals into the open and closed positions, respectively. 1. A connector assembly , comprising:first and second releasably mateable connector units each having a rear end, a front end, and a longitudinal axis, and each connector unit comprising a shell, a manifold located at least partially inside the shell, at least one contact chamber containing at least one contact, each manifold having a front end wall with at least one inlet communicating with the contact chamber and aligned with the contact, the shell and manifold of each connector unit being relatively movable;the front end wall of each manifold having at least one recessed seat having opposite first and second ends;at least one rolling seal movably mounted in each recessed seat, the rolling seal having at least one through bore;each rolling seal being movable relative to the respective seat in a non-axial direction relative to the respective connector unit between a sealed and closed condition in which the through bore is offset from the respective inlet and the inlet is sealed when the connector units are unmated and an open condition in which the through bore is aligned with the ...

SMART SUBSEA PIPELINE WITH CONDUITS

Pipeline segments can contain cables, such as communication cables (e.g., fiber optic cables) within insulation material surrounding the pipeline segments. Cables can be embedded within the insulation material, run through conduits embedded within the insulation material, placed in channels formed in the insulation material, or otherwise. Channels containing one or more cables can be filled with supplemental insulation material, thus securing the cables within the channels. Pipelines created as disclosed herein can enable data transfer between distant points without the need to lay fiber optic cable in addition to the pipeline. Further, fiber optic cable embedded thusly can be used to sense conditions in the pipeline, such as leaks, seismic activity, strain, and temperature information. 1. A tubular , comprising:a base pipe for transporting hydrocarbons;insulation material exterior to and coupled to the base pipe; anda conduit positioned within the insulation material and extending through an entire length of the insulation material.2. The tubular of claim 1 , further comprising:a drag line positioned within the conduit, wherein the drag line is translatable with respect to the conduit for pulling a cable through the conduit.3. The tubular of claim 1 , further comprising:an optical cable positioned within the conduit, wherein the optical cable includes a first end extending past a conduit first end and a second end extending past a conduit second end.4. The tubular of claim 1 , wherein the conduit is electrically conductive claim 1 , and wherein the conduit is electrically insulated from the base pipe.5. The tubular of claim 1 , further comprising a recess in the insulation material claim 1 , wherein the recess is sized for receiving a component claim 1 , wherein the recess intersects the conduit.6. The tubular of claim 1 , wherein the conduit has a first conduit end and a second conduit end claim 1 , and wherein the first conduit end extends beyond a first ...

REPEATER, FEEDTHROUGH, AND REPEATER MANUFACTURING METHOD

A repeater includes: a pressure-tight casing to be arranged on seabed or in sea; and a feedthrough having a plurality of lead sections each configured to connect a circuit housed in the pressure-tight casing with a cable outside the pressure-tight casing, wherein the plurality of lead sections include at least a power wire and an electric signal wire, and at least two of the plurality of lead sections have a difference in length from each other. 1. A repeater , comprising:a pressure-tight casing configured to be arranged on seabed or in sea; anda feedthrough having a plurality of lead sections each configured to connect a circuit housed in the pressure-tight casing with a cable outside the pressure-tight casing, whereinthe plurality of lead sections comprise at least a power wire and an electric signal wire, andat least two of the plurality of lead sections have a difference in length from each other.2. The repeater according to claim 1 , whereinthe feedthrough comprises:a central lead section; anda plurality of outer circumferential lead sections located on an outer circumferential side of the central lead section, whereinthe outer circumferential lead sections are shorter than the central lead section.3. The repeater according to claim 1 , wherein a measuring device is connected to one end of the cable.4. The repeater according to claim 1 , whereinthe difference in length between the at least two lead sections is equal to or larger than thickness of a tool to be used to connect each of the plurality of lead sections with the cable outside the pressure-tight casing.5. The repeater according to claim 2 , wherein the plurality of outer circumferential lead sections are located on a concentric circle.6. The repeater according to claim 2 , whereinthe feedthrough has an intermediate lead section located on an outer circumferential side of the central lead section and on a center side of the outer circumferential lead sections, andthe intermediate lead section is shorter ...

Power Cable Assembly Device And A Power Cable Provided With Such A Device

A power cable assembly device adapted to be arranged in the spaces between neighbouring power cores of a power cable. The power cable assembly device includes an extruded profiled body made of a polymer material having a first, second, and third walls. The first wall being convex and having an exterior surface adapted to face a jacket of the power cable. The profiled body also having a chamber wall extending from the second to the third wall, defining a slit and adapted to receive a fibre optic cable. 12424242244681066661022822188101810016415810161630151001022110010221a,b,ca,b. A power cable assembly device adapted to be arranged in the spaces between neighbouring power cores () of a power cable () , comprising an extruded profiled body () made of a polymer material and adapted to the cross-sectional shape and elongation of the power cable , said profiled body () comprising a first wall () , a second wall () and a third wall () , said first wall () being convex and having first and second opposite end portions () , the first wall () having an exterior surface () adapted to face a jacket () of the power cable () , said profiled body further comprising a chamber wall () extending from said second wall () to said third wall () , said chamber wall () having an interior surface () defining a chamber () , said profiled body () defining a slit () between said second wall () and said third wall () to said chamber () , said chamber () being adapted to receive a fibre optic cable () via said slit () , characterised in that at least a portion of said interior surface () and at least a portion of said exterior surface () is provided with a semi-conductive material () , respectively , said interior surface () and said exterior surface () being electrically interconnected by said semi-conductive material ().2. A power cable assembly device according to claim 1 , wherein{'b': 100', '16', '30', '21', '21, 'i': 'a', 'at least a portion of the surface () of the chamber () for the ...

Tensioning mechanism and internal unit for submarine optical cable system

本申请提供一种用于海底光缆系统的涨紧机构及内部单元。涨紧机构安装在内部单元中内部筒体的两个端部，包括涨紧环、多个与内部筒体中的多个瓣体一一对应的IU连接块，以及调节装置，通过任一IU连接块与对应的目标瓣体的端部紧固连接，IU连接块通过调节装置固定在涨紧环的内壁上，并在调节装置的调节下沿涨紧环的径向方向靠近涨紧环的内壁，同时带动目标瓣体与绝缘筒体共同涨紧在外部筒体内部。如此，涨紧机构主要依靠调节装置刚性调节IU连接块的位置来实现内部筒体的涨紧，不易失效，可靠性较高。

Vibration and jet flow combined underwater robot for optical cable burying

本发明提供了一种振动射流联合作用的光缆埋设水下机器人，包括框架，框架设于水下行走机构上，在框架上设有压缆器、寻缆器、水下定位及探测系统、高压水泵系统，水下定位及探测系统与高压水泵系统经由电缆连接控制及供电系统，其特征在于，还包括：挖槽枪及机械振动器。本发明联合利用机械振动和高速水流将板结的泥沙与水快速掺混变成泥浆而成沟槽，在压缆器的作用下将光缆埋设在泥沙床面以下指定深度。本发明可以广泛应用于江河湖海的光缆埋设。本发明的技术实施简单，能耗低，功效高，而且环保。

A kind of optical fiber laying device

本发明涉及一种光纤铺设装置，包括连接和支撑整个装置的机架，机架底部两侧安装有滑靴，机架上部设置有液压撬块，液压撬块上部设置有导向槽，机架中轴前部安装有用于导向的前导向滚，机架中轴后部安装有用于导向的后导向滚，机架尾部安装有门型架下插器，光纤铺设是在后挖沟完成之后，对海管正常铺设无影响，且施工过程中光纤断裂风险较低，光纤保护性好；光纤有泥槽和门型架双重约束，固定牢固；无需潜水员下水操作，施工难度较低，施工工作量小。

Submarine cable underwater joint hangs puts construction equipment convenient to adjust

一种便于调节的海缆水下接头吊放施工装置，属于海缆吊放技术领域，包括两个相互平行的支架，两支架通过横板连接，两支架之间设有转轴，转轴的两端分别通过轴承连接对应的支架，转轴的两侧均固定安装第一线轮，转轴的中部通过轴承安装第二线轮，第二线轮与转轴另通过连接机构连接，连接机构能使第二线轮与转轴同步转动，第二线轮的一侧轮缘外周开设环形槽，横板的顶面固定安装电机，电机的输出端固定安装带轮，带轮与环形槽之间通过传动带连接。本装置能够解决水下接头施工造成电缆水下交叉，打圈及硬性弯曲，电缆两点受力，电缆载荷较大，容易造成二次损伤等问题；且无需潜水员水下解缆即可将本装置吊装出水，可反复使用。

GEL CARTRIDGE FOR CONNECTION ASSEMBLY AND CONNECTION ASSEMBLIES COMPRISING SUCH A GEL CARTRIDGE

Une cartouche (50) comprend une enveloppe externe, partiellement remplie de gel électriquement isolant (56), et au moins une piste électriquement conductrice (52) immergée dans le gel isolant (56). Des ensembles de connexion comprenant au moins un demi-connecteur (10) et une telle cartouche (50) sont également décrits. A cartridge (50) includes an outer shell, partially filled with electrically insulating gel (56), and at least one electrically conductive track (52) immersed in the insulating gel (56). Connection assemblies comprising at least one half-connector (10) and one such cartridge (50) are also described.

CABLE-LAYING EQUIPMENT.

Optical communication device

This optical communication device (1) is provided with a plurality of light receiving elements (11), and a plurality of optical fibers (12). Each of the plurality of optical fibers includes a light-incident end portion (12a) of communication light and a light-emission end portion (12b) of the communication light. The plurality of light-emission end portions are respectively disposed near the plurality of light receiving elements. Each of the plurality of light-incident end portions is configured so as to be arrangeable in a prescribed position and direction.

Subsea cable installation unit

A subsea installation tool for installing a flexible body, e.g. a subsea fibre cable 1 on a seabed from a surface vessel, and an associated method for installing the flexible body on the seabed is provided. The installation tool includes a tensioner 4 1-2,A-B that may be coupled to the flexible body 1 to actively pull it down, thus increasing cable tension in an upper section 1 A of the cable from the installation vessel 16 to the installation tool. High tension in the upper part of the cable gives good control even in strong sea currents. At the same time the tensioner enables lower cable tension in the bottom part cable from the installation tool to the seabed, giving good control of the touchdown position on the seabed.

A kind of method that seabed armored optical cable steps on ocean platform

本发明属于海底光缆的领域，具体涉及一种海底铠装光缆登海洋平台的方法。包括以下步骤：（1）将海底的部分铠装光缆牵拉至船上；（2）然后将牵拉出的铠装光缆端部安装上拖缆网套；（3）随后将绳索一端与海上作业的牵拉设备相连，另一端下放至海缆护管底部；（4）接着将安装有拖缆网套的光缆端下水至海缆护管底部位置；（5）再将海缆护管底部位置的绳索端与光缆端的拖缆网套相连；（6）最后用牵拉设备将铠装光缆沿着海缆护管牵拉登上平台。本发明不仅解决了海底光缆登平台时的难题，同时有效地避免了光缆受到外界载荷的破坏。本发明操作简单，省时省力，解决了海底铠装光缆在登平台时的处理难题。

Underwater communication optical fiber traction robot

本发明属于通信光纤技术领域，尤其是一种水下通信光纤牵引机器人，包括驱动车，所述驱动车的上表面设置有牵引装置、开沟装置和固定装置，所述牵引装置位于所述驱动车的机壳上表面并对位于水底的通信光纤进行牵引工作。该水下通信光纤牵引机器人，通过设置牵引装置，能够对通信光纤进行牵引工作，通过支撑辊对通信光纤进行支撑工作，保持通信光纤的高度，使得通信光纤能够进入输送辊与辅助辊之间，通过输送电机与辅助电机的驱动，能够带动通信光纤向弧形通道移动，辅助辊能够通过调节液压缸调节辅助辊的位置，能够根据通信光纤的直径进行相应的调节，便于不同直径的通信光纤进行输送，增加实用性。

Repeater, feedthrough, and repeater manufacturing method

A repeater includes: a pressure-tight casing to be arranged on seabed or in sea; and a feedthrough having a plurality of lead sections each configured to connect a circuit housed in the pressure-tight casing with a cable outside the pressure-tight casing, wherein the plurality of lead sections include at least a power wire and an electric signal wire, and at least two of the plurality of lead sections have a difference in length from each other.

Optical cables and methods of repairing damaged optical cable installations

An optical cable incorporates at least one fibre with positive dispersion and at least one fibre with negative dispersion spliced together within the cable. In the simpler forms of the invention, the aggregate dispersion from end to end of the cable is close to zero. The cable is intended for use in repairing a dispersion-managed optical cable installation in circumstances where it is not possible to replace a short damaged lenght of cable along its original route and it is necessary to insert such additional lenght of cable that the dispersion balance of the system may be adversely affected. If required, the cable may be modified (with an aggregate dispersion different from zero) to make it possible to match the dispersion of the damaged cable length that was removed instead of neglecting it.

Pipe-conforming structure

The present techniques are directed to systems and methods for forming a pipe- conforming structure. The pipe-conforming structure includes a polymer material and one or more optic fibers embedded within the polymer material. The polymer material is formed into a structure that is conformed to the shape of a pipe. A method includes forming a polymer material into a structure including an edge region and a center region. The center region has a greater thickness than the edge region. The method includes inserting one or more optic fibers into the polymer material.

Abrasion resistant submarine cable arrangement

System is put in laying of sea optical cable

本发明公开的一种海光缆的布放系统，包括：光缆路由复测模块，用于对海底路由复查，了解海底状况；敷设施工模块，用于将光缆铺设于海底；光缆冲埋保护施工模块，用于深埋海底光缆；检验模块，用于检测海底光缆运行情况和排查故障；检修预警模块，用于海底光缆故障预警。本发明能够在光缆铺设前对其功能质量进行全面检测，保证光缆的工作时长和信息完整度；同时，还能够确保光缆所铺设位置的合理性，确保光缆有正常的工作环境；能够全天候检测光缆运行情况，保证光缆的正常工作。

Method of repairing optical submarine cable and repair cable used in the method

A method of repairing an optical transmission cable which is broken at a breakage point, including the steps of fabricating a second cable by using the even number of first cables each of which includes a first area comprised of a bridge fiber and a second area comprised of at least one kind of fiber such that the first and second areas are arranged in a length-wise direction of each of the first cables, the second cable having opposite end surfaces having the same fiber arrangement as that of exposed surfaces of the optical transmission cable which are caused by a breakage of the optical transmission cable, first areas being spliced to each other and the second areas being spliced to each other in the second cable, and inserting the second cable into the optical transmission cable at the breakage point.

Waterproof coupling device

本发明涉及一种耦合装置，特别涉及一种防水耦合装置，包括镶入器、耦合器、密封盖、数据桥接模块、火线桥接模块和零线桥接模块，所述镶入器上设有火线镶入端、零线镶入端、数据镶入端和其覆盖于火线镶入端、零线镶入端、数据镶入端外表面的绝缘层；所述耦合器分为耦合腔室、密封腔室和密封腔室外的外部配合螺纹，所述耦合腔室和密封腔室通过耦合器内设有的阻隔层隔离开，所述阻隔层上设有火线耦合套筒、零线耦合套筒、数据耦合套筒、数据通孔、火线通孔、零线通孔和滑筒配合延伸套筒；本发明插入即可用，一步到位，具有防触电设计；具有多重防水效果，可在水中使用，并且采用模块式设计，便于维修和更换件。

Method and apparatus for continuous laying and burial of a flexible submarine cable

Abrasion resistant submarine cable arrangement

Submarine optical cable branch equipment and submarine optical cable system

本申请提供了一种海底光缆分支设备及海底光缆系统，所述分支设备包括分支器本体以及与分支器本体连接的至少三个分支单元，至少一个分支单元包括缓冲减震器、万向节组件以及接头盒组件，缓冲减震器通过万向节组件与接头盒组件连接。通过调整万向节组件的角度，可以改变缓冲减震器相对于接头盒组件的位置，从而达到调整分支单元相对于分支器本体的角度的目的。并且，通过调整相邻两个分支单元上万向节组件的角度，可以改变相邻两个分支单元的夹角角度，因此，分支单元角度可调整的灵活性更高。使用上述海底光缆分支设备连接海缆线路而组成的海底光缆系统，可以通过调整分支单元的角度，适应复杂的海底地形，提高海底光缆系统敷设作业的效率。

Subsea optical connector using multiple seals

The present invention provides optical connectors and optical feedthrough systems that can be mated and unmated in a harsh environment, such as underwater, and is particularly concerned with a method and apparatus for securing and sealing an optical feedthrough or connector from the surrounding turbid environment.

Abrasion protected deepwater cable

An improved deepwater optical fiber cable with abrasion protection and techniques for manufacturing the same are provided. For example, the abrasion protected deepwater cable may be a modification or enhancement of an existing special application (SPA) optical fiber cable. One or more additional layers of metallic tape and jackets may be added to the outermost layer of the SPA cable. The tape and jacket layers may have different thicknesses and may be made from different materials to optimize protection against man-made objects or otherwise naturally occurring materials in deep water environments, such as fish aggregation devices (FADs).

Feedthrough connector

A subsea plug connector part (9) for a subsea wet-mateable connector comprising a receptacle connector part (8) and a plug connector part (9), the plug connector part comprising a plug back end (11), a plug front end (13) and an interface (12). The interface comprises a first cold separable joint element (20) at one end. The plug front end (13) comprises a second cold separable joint element (18). The first cold separable joint element (20) and second cold separable joint element (18) are adapted to join the interface (12) to the plug front end (13).

High-precision deep-sea cable laying equipment for manned submersible

本发明涉及一种载人潜水器高精度深海铺缆装备，包括载人潜水器，所述载人潜水器的中部设置有载人舱，所述载人舱内安装有控制柜，所述载人潜水器艉部从后往前依次安装有分线箱、横向槽道推进器和吊放绞车，所述吊放绞车上缠绕有多层起吊脐带缆，起吊脐带缆的末端连接有自动调整器；所述载人舱下方的载人潜水器上安装有超短基线换能器；所述载人潜水器的艏部安装有垂直槽道推进器，所述载人舱与垂直槽道推进器之间安装有储缆卷筒，所述储缆卷筒的下方安装有输送履带，所述储缆卷筒上缠绕有待铺设的海底光缆，所述海底光缆的起始端从输送履带的上下履带之间穿过，然后穿过自动调整器，通过海底光缆重力的作用，落于海床上。铺设方便。

Subsea cable having floodable optical fiber conduit.

En por lo menos algunas modalidades, un cable submarino descrito incluye uno o más conductos de fibra óptica inundables cada uno teniendo por lo menos una fibra óptica fuertemente protegida para transportar señales ópticas; cada fibra óptica fuertemente protegida puede tener una longitud relativamente limitada; el cable submarino adicionalmente puede incluir múltiples elementos de fuerza enrollados contra-helicoidalmente alrededor o junto con uno o más conductos de fibra óptica inundables; también o alternativamente puede incluirse por lo menos un conducto de fibra óptica sellado herméticamente que tiene por lo menos una fibra óptica protegida empalmada a una de las fibras ópticas fuertemente protegidas; por lo menos algunas implementaciones empalman cada una de las fibras óptica fuertemente protegidas a fibras protegidas correspondientes para las comunicaciones de larga distancia; la inundación de los conductos inundables puede proveerse vía conectores en los extremos de cable submarino, vía ubicaciones separadas donde se fijan los sensores, y/o vía respiraderos en la pared del conducto; Algunas modalidades del método despliegan los diseños de cable submarino descritos en un cuerpo de agua, colocando el interior de por lo menos un conducto de fibra óptica inundable en comunicación de fluido con el cuerpo de agua mientras soporta uso extendido para señales de comunicación, particularmente en agua profunda donde las temperaturas son relativamente bajas; debido a que los conductos inundables tienen interiores con presión igualada éstos pueden crearse de plástico y otros materiales que facilitan el proceso de fijar los sensores a los cables submarinos.

Submarine optical cable laying device

一种海底光缆铺设设备，属于电缆铺设设备技术领域，包括高压水箱、控制器、第一支杆、第一双头气缸、架子、第三滑块、第二滑轨、第四气缸、第四电机、螺杆、螺母、履带底盘、第二双头气缸、第二支杆、第二电机、第一链条、第二滑块、齿轮、第一气缸、高压喷头、第一滑块、第一滑轨、挖土轮、第二链条、轮架、第三电机、第三气缸、支柱、第二气缸、机架、法兰轴承、连接柱、丝母、丝杠和第一电机，所述高压水箱安装在机架上，高压水箱左右两侧各安装架子，架子下安装履带底盘，履带底盘内置减速电机，机架内左侧安装第一电机，第一电机的输出轴通过联轴器与丝杠相连；本发明的优点是：多个高压喷头能左右移动。

Method for improving binding power of submarine cable insulating layer and copper tube

本发明公开了一种提升海缆绝缘层与铜管粘结力的方法，将乙烯丙烯酸共聚物与聚乙烯混合均匀，得到粘结材料；聚乙烯材料作为绝缘层材料；用烘料机将粘结材料和绝缘材料烘干，然后将单螺杆挤出机预先加热到160‑290℃；铜管放线，在铜管进入挤塑机模头之前，先用酒精进行清洗，并且使用预热器对铜管进行预热，预热后铜管表面温度为60‑200℃；单螺杆挤出机采用双层共挤模式，分别在铜管表面挤塑一层粘结层和绝缘层；通过冷水槽逐步冷却。本发明的方法简单，操作方便，大大提升了铜管与绝缘层之间的粘结力，避免了海缆在敷设的过程中，出现绝缘层与铜管脱落的问题。

Submarine device, method of configuring submarine device, and submarine cable system

In an aspect of the present disclosure, a submarine device includes a main tail cable connected to a submarine cable, a first branch tail cable including a first group of optical fibers among a plurality of optical fibers included in the main tail cable, a second branch tail cable including a second group of optical fibers among the plurality of optical fibers, a branch member that couples the main tail cable to the first and second branch tail cables and including therein a through hole for branching the plurality of optical fibers included in the main tail cable into the first group and the second group, and a device main body including a first introduction part for introducing the first branch tail cable into the device main body and a second introduction part for introducing the second branch tail cable into the device main body.

Downhole control line connector

An example connector includes a housing having a conduit chamber defined therein between a body and a shroud, a matable connector at least partially disposed within the housing and providing a mating face that faces tangentially with respect to the housing so as to mate tangentially with an opposing matable connector, and a splitter block coupled to the housing and conveying one or more communication media into the conduit chamber to communicate with the matable connector.

Optical cable repair method and repair cable piece used therefore

In a method of repairing at least one optical cable, in one repeating span between two adjacent repeaters (111,112), which is constituted by a first optical fiber (113a) exhibiting positive wavelength dispersion with respect to an optical signal to be transmitted and a second optical fiber (113b) which is connected in series with the first optical fiber and exhibits negative wavelength dispersion with respect to the optical signal, an optical cable portion, in the repeating span, which includes a fault point (115) of at least an optical cable in one direction and has a fixed length from a point near one of two adjacent repeaters is cut. At least one repair cable piece (121a,121b) constituted by a third optical fiber (121a) exhibiting the same positive wavelength dispersion as that of the first optical fiber (113a) and a fourth optical fiber (121b) which is connected in series with the third optical fiber and exhibits the same negative wavelength dispersion as that of the second optical fiber (113b) is inserted and connected in the cut optical cable portion. The repair cable piece has a fixed length equal to the sum of the length of the cut optical cable and the additional cable length for a repair. A repair cable piece is also disclosed.

Subsea cable having floodable optical fiber conduit

In at least some embodiments, a disclosed subsea cable includes one or more floodable optical fiber conduits each having at least one tight buffered optical fiber for transporting optical signals. Each tight buffered optical fiber may have a relatively limited length. The subsea cable may further include multiple strength members contra-helically wound around or together with the one or more floodable optical fiber conduits. There may also or alternatively be included at least one hermetically sealed optical fiber conduit having at least one protected optical fiber spliced to one of the tight buffered optical fibers. At least some implementations splice each of the tight buffered optical fibers to corresponding protected fibers for the long-haul communications. Flooding of the floodable conduits may be provided via connectors at the subsea cable ends, via breakout locations where sensors are attached, and/or via vents in the conduit wall. Some method embodiments deploy the disclosed subsea cable designs in a body of water, putting the interior of at least one floodable optical fiber conduit in fluid communication with the body of water while supporting extended use for communicating signals, particularly in deep water where temperatures are relatively low. Because the floodable conduits have pressure-equalized interiors they may be formed from plastic or other materials that ease the process of attaching sensors to the subsea cables.

CABLE-LAYING EQUIPMENT.

Relay device, feedthrough, and method of manufacturing relay device

Monomer formula is navel cord cable terminal under water

本发明公开了一种单体式水下脐带缆终端，包括终端主体、光纤线路、电力线路及液压分配管路，终端主体上侧面设有脐带缆接入口、液压管路输出接口、光纤输出接口及电力输出接口，脐带缆从脐带缆接入口进入脐带缆终端，脐带缆中引出液压分配管路、光纤线路、电力线路分别从所述管路液压输出接口、光纤输出接口及电力输出接口穿出，相对现有用水下分配单元进行分配的方式，本发明的结构装置与水下脐带缆一同下水铺设，不需要水下防沉板基础，并且可以直接与水下设施结构基础相连接，降低了设计、制造及安装成本。

Abrasion resistant submarine cable arrangement

An electric and/or optical submarine cable arrangement which bridges the weight/strength gap that exists between armoured and unarmoured cable. A stranded armour layer (6) comprises alternate strands of steel wire (7) and polymeric filler (8). Such a cable has sufficient strength to support a section of heavy armoured cable joined to it during laying in water of a depth exceeding 2 km, but light enough that an unarmoured cable can support it in deep water.

Submarine cable state monitoring and comprehensive online monitoring equipment

本发明公开了海缆领域的一种海缆状态监测及综合在线监测设备，包括安装箱，安装箱内安装有延伸至其外部的海缆，安装箱的左右两端分别安装有一个防漏机构，安装箱的底部安装有多个固定装置，安装箱的内部安装有定位器，安装箱的上方安装有漂浮板，漂浮板的底部安装有多个漂浮球，漂浮板的顶部安装有防护壳，防护壳内安装有监测器，监测器通过导线与定位器相连，安装箱上安装有密封圈，导线贯穿密封圈，漂浮板上安装有延伸至防护壳外部的警示装置，防护壳内安装有蓄电池，漂浮板上安装有太阳能发电板。本发明对海缆的位置监测方便，警戒性高。

Method and apparatus for continuous laying and burial of a flexible submarine cable

PCT No. PCT/FR94/00425 Sec. 371 Date Oct. 20, 1995 Sec. 102(e) Date Oct. 20, 1995 PCT Filed Apr. 15, 1994 PCT Pub. No. WO94/24377 PCT Pub. Date Oct. 27, 1994It is characterized in that it consists in using a self-propelled sea plough (1) remote-controlled via a control flexible (2), said sea plough carrying at least one reel (6) of flexible conduit (7), controlling said sea plough from a site (5) so as to lay and bury a length of the flexible conduit up to a first predetermined point (P1), controlling said sea plough beyond said first predetermined point from another site (10), continuing laying and burying of the flexible conduit as far as a second predetermined point (P2), one of said sites being the land (5) and the other comprising a waterborne vessel. Applications include simultaneous laying and burying of flexible conduits such as optical cables, coaxial cables for analogue transmission, electrical cables, single or multiple flexible tubular conduits.

Underwater umbilical cable with temperature measurement and vibration measurement and three-dimensional shape remodeling capabilities

本发明公开了一种具有测温测振以及三维形状重塑能力的水下脐带缆，其特征在于，所述水下脐带缆用于连接水下设备和水上设备；所述水下脐带缆包括外护套、铠装钢丝、内护套、电缆、通信光缆、钢管、三条测应力光纤、三条测温变光纤、分布式光纤应变解调仪、分布式光纤温度解调仪和处理器。本发明可以长时间采集脐带缆运作状态数据，所采集的数据客观性强，能够真实反应脐带缆的实时运作状况，对于长期海底石油气的开采工作有着重要的保障作用。

Cable system and method is worn for the monitoring optical cable installation of submarine pipeline casing annulus

本发明公开了一种用于海底管道套管环空监测光缆安装的穿缆系统及方法：在管道环空安装穿缆管并内穿拖缆丝；管道铺设过程中，在两工站安装穿缆系统；光缆端头与拖缆丝相连，拖缆丝的另一端固定在绕缆柱上，通过盘缆导向头将光缆以“8”字形盘绕在绕缆柱上，将所有光缆拖过管道；管道向下一工站行进时，位于待机区的绕缆卡座将放缆完成的绕缆柱带离放缆卡座，翻转后落位于绕缆区；携带满缆的绕缆卡座随管道向下一工站移动，翻转后将绕缆柱固定在放缆卡座上，释放绕缆柱后的绕缆卡座落位于待机区；形成循环穿缆作业流程。本发明解决了传统伴管敷设光缆的技术难点，具有光缆定位和防护效果好、监测反应快、灵敏度高、成本低、操作施工强度低等优点。

Submarine fiber optic cable assembly

An apparatus which allows the installation of a relatively inexpensive, low-attenuation, subterranean fiber optic cable underwater is disclosed. A high-density polyethylene subduct is extruded around the fiber optic cable to form a subduct assembly which typically exhibits a weight that is less than its buoyancy in water. The subduct assembly is then transported to the point of installation along with at least one sinkable cable and a lashing wire. Dimensions of the sinkable cable are selected so that, at the point of installation, the sinkable cable is lashed to the subduct assembly to form a cable assembly having a desired weight-to-buoyancy ratio with respect to water and a desired tensile strength. Splices in the subduct assembly and the sinkable cable occur at locations in the cable assembly which are offset from one another.

Underwater optical fiber installation device

本发明涉及一种光纤安装装置，更具体的说是一种水下光纤安装装置。包括滑动框架、顶架机构、安装架、吸收机构、安装机构和升降机构，顶架机构连接在滑动框架的上端，安装架连接在顶架机构上，安装架与滑动框架滑动连接，吸收机构连接在安装架上，安装机构连接在安装架内，升降机构连接在安装架内，本发明可以在河道两侧对河内进行水下光纤安装，提高光纤安装的效率，节省光纤原料的使用，节约光纤安装路线，滑动框架带动顶架机构进行移动，便于对河道宽度方向进行移动，便于将光纤由安装机构按压到水下进行铺设安装。

Underwater optical fiber installation device

本发明涉及一种光纤安装装置，更具体的说是一种水下光纤安装装置。包括滑动框架、顶架机构、安装架、吸收机构、安装机构和升降机构，顶架机构连接在滑动框架的上端，安装架连接在顶架机构上，安装架与滑动框架滑动连接，吸收机构连接在安装架上，安装机构连接在安装架内，升降机构连接在安装架内，本发明可以在河道两侧对河内进行水下光纤安装，提高光纤安装的效率，节省光纤原料的使用，节约光纤安装路线，滑动框架带动顶架机构进行移动，便于对河道宽度方向进行移动，便于将光纤由安装机构按压到水下进行铺设安装。

Monitoring of power cables with distributed fibre optic sensing

Feedthrough connector

A subsea plug connector part for a subsea wet-mateable connector includes a receptacle connector part and a plug connector part, the plug connector part has a plug back end, a plug front end and an interface. The interface includes a first cold separable joint element at one end. The plug front end includes a second cold separable joint element. The first cold separable joint element and second cold separable joint element are adapted to join the interface to the plug front end.

Landing cable and partial landing cable

In order to suppress landing construction, these landing cables, which are installed offshore from a cable landing position, are each provided with: an initially used optical fiber that is used from the initial start of communication by the landing cable; and a preliminary optical fiber which is a preliminary optical fiber in addition to the initially used power feed line used from the initial start, wherein the preliminary optical fiber is connected from a cable landing position side terminal point to boundary points between the cable landing position side terminal point and a cable interval that does not include the preliminary optical fiber, and the terminal point of the preliminary optical fiber, which is the terminal point of the preliminary optical fiber in the boundary points, is held in a state of being usable in the future.

Embedding device for laying optical fibers in submarine gully environment

一种用于海底沟壑环境光纤铺设的埋设装置，所述埋设装置包括有犁架、滑橇、犁铧、高压喷水系统、拉动杆和控制系统，所述埋设装置还包括有用于在光纤外表面套设防护管的套管单元，所述套管单元安装在犁架上，若干防护管安装在套管单元内且与光纤在犁架内的行进路线相对应。本发明可以随时为铺设的电缆套设防护管，方便电缆跨越沟壑环境以及岩石区域，避免电缆受力磨损和洋流切割风险，延长电缆寿命。

海底ケーブルジョイントにおけるデュアルテール形状補償フィルタ

【課題】本開示は、海底ケーブルジョイントにおけるデュアルテール形状補償フィルタを開示する。【解決手段】いくつかの実施例において、保持器は、複数のＳＣＦおよび複数のマイクロスプリントを配置するように操作可能であり、該保持器は、第１部分および第２部分を有する本体を含む。保持器は、第１部分を貫通するように延伸する第１チャネルおよび第２チャネルを更に含んでもよく、第１セットのＳＣＦは第１チャネルを貫通するように延伸し、第２セットのＳＣＦは第２チャネルを貫通するように延伸する。保持器は、第１部分を貫通するように延伸する第３チャネルおよび第４チャネルを更に含んでもよく、第１セットのマイクロスプリントは第３チャネルを貫通するように延伸し、第２セットのマイクロスプリントは第４チャネルを貫通するように延伸する。第３セットのマイクロスプリントは第３チャネルを貫通するように延伸し、第１セットのマイクロスプリントと第３セットのマイクロスプリントとは、充填層を介して互いに分離されている。【選択図】図１

Underwater data center systems with cables, optical fibers and sensors

An underwater data center system with a data center is positioned in a water environment and powered by one or more sustainable energy sources. One or more processors are coupled to the data center or included in the data center. A controller is coupled to the one or more processors. A housing member houses the one or more processors under water. One or more cables are coupled to the one or more processors or the sustainable energy source. One or more fiber optical elements are at an interior of the one or more cables, and one or more sensors are at an exterior of the one or more cables.

Repairing process of submarine optical cable

Cable monitoring apparatus and method

A measurement apparatus is disclosed for connection to an end of a cable (1) having at least one of: at least one electrically conductive core (11) for carrying electrical current and/or electrical signals along the cable; at least one electromagnetic waveguide (12) for carrying electromagnetic signals along the cable; and at least one bore (13) for conveying a fluid along the cable. The measurement apparatus comprises: connection means (4) for connecting to the end in an above-water or out-of-water environment to make at least one of: at least one respective electrical connection (41) to at least one core, at least one respective waveguide connection (42) to at least one waveguide for sending an electromagnetic signal along the waveguide, and at least one respective fluid or hydraulic connection (43) to at least one bore; and measuring means (5) connected to the connection means and operable to perform at least one measurement, via the connection means, on a connected cable. The measurement apparatus is deployable, when connected to an end of the cable, with the cable end to an underwater location for a period of time, and recoverable with the connected cable end after the period of time to an above-water or out-of-water location. The measuring means is operable to perform the measurement(s) while the measurement apparatus is connected to the cable end and at least while submerged with the connected cable end and/or after recovery with the connected cable end from the underwater location to the above-water or out-of-water location.

Dual tail shape compensation filter in submarine cable joint

Disclosed herein are undersea optical cable connection assemblies and systems. In some embodiments, a retainer is operable to arrange a plurality of SCFs and a plurality of microsplints, the retainer including a main body having a first section and a second section. The retainer may further include a first channel and a second channel extending through the first section, wherein a first set of SCFs extend through the first channel, and wherein a second set of SCFs extend through the second channel. The retainer may further include a third channel and a fourth channel extending through the first section, wherein a first set of microsplints extends through the third channel, and wherein a second set of microsplints extends through the fourth channel. A third set of microsplints extends through the third channel, wherein the first and third sets of microsplints are separated from one another by a padding layer.

Apparatus, system and method enabling multiplexed arrangement of optical fiber for sensing of operating conditions within a structural member

Embodiments of the present invention provide a unique new approach to generating operating condition information used for assessing flow assurance and structural integrity. More specifically, apparatuses, systems and methods configured in accordance with embodiments of the present invention enable multiplexed arrangement of optical fiber for sensing of operating conditions within a structural member and utilize fiber optic sensors for enabling monitoring of operating condition information within one or more elongated tubular members. To this end, fiber optic sensors are strategically placed at a plurality of locations along a length of each elongated tubular member thereby allowing critical operating conditions such as strain, temperature and pressure of the elongated tubular member and/or a fluid therein to be monitored. A multiplexing unit is used for allowing selective configuration of individual lengths of optical fiber for creating one or more contiguous optical fiber structures.

一种可重复利用轻型水密光缆及其制造方法

本申请公开了一种可重复利用轻型水密光缆及其制造方法，涉及光缆技术领域，可重复利用轻型水密光缆包括光纤、内阻水胶、阻水层、加强层、内护套、铠装层、外阻水胶和外护套；所述内阻水胶包覆光纤，为吸水膨胀型阻水填充胶；所述阻水层为阻水带，包覆在所述内阻水胶上；所述加强层为阻水型芳纶纤维材质，包覆在所述阻水层上；所述内护套为聚乙烯或氯丁橡胶材质，套设在所述加强层上；所述铠装层为由不锈钢丝编织而成的管，铠装层包覆内护套；所述外阻水胶包覆在铠装层上，为密封抗水型阻水填充胶；所述外护套为聚氨酯材质，套设在所述外阻水胶上；实现了光缆既能够满足在高水压下工作，又易于反复收放重复利用的技术效果。

Subsea cable bundle installation

一种可重复利用轻型水密光缆及其制造方法

本申请公开了一种可重复利用轻型水密光缆及其制造方法，涉及光缆技术领域，可重复利用轻型水密光缆包括光纤、内阻水胶、阻水层、加强层、内护套、铠装层、外阻水胶和外护套；所述内阻水胶包覆光纤，为吸水膨胀型阻水填充胶；所述阻水层为阻水带，包覆在所述内阻水胶上；所述加强层为阻水型芳纶纤维材质，包覆在所述阻水层上；所述内护套为聚乙烯或氯丁橡胶材质，套设在所述加强层上；所述铠装层为由不锈钢丝编织而成的管，铠装层包覆内护套；所述外阻水胶包覆在铠装层上，为密封抗水型阻水填充胶；所述外护套为聚氨酯材质，套设在所述外阻水胶上；实现了光缆既能够满足在高水压下工作，又易于反复收放重复利用的技术效果。

一种涨紧机构及内部单元

本申请涉及通信技术领域，提供的一种涨紧机构及内部单元，涨紧机构包括设置在内部单元的相邻两个瓣体之间的中段涨紧装置，中段涨紧装置包括：控制端，可沿内部单元的轴向运动；涨紧端，与控制端连接，且存在分别贴合相邻两个瓣体的两个涨紧面，分别贴合相邻两个瓣体的两个涨紧面之间的距离受控制端的轴向运动控制，以扩增相邻两个瓣体之间的间隙，实现内部单元的中段涨紧；应用本申请实施例的技术方案，通过在相邻两个瓣体之间设置中段涨紧装置，中段涨紧装置通过涨紧端实现相邻两个瓣体之间的间隙调整，在内部单元与承压筒处于涨紧状态时，由涨紧端承受压力作用力，从而可以增强涨紧机构的支撑稳定性，以及提高涨紧机构的使用寿命。

Apparatus, system and method enabling multiplexed arrangement of optical fiber for sensing of operating conditions within a structural member

Embodiments of the present invention provide a unique new approach to generating operating condition information used for assessing flow assurance and structural integrity. More specifically, apparatuses, systems and methods configured in accordance with embodiments of the present invention enable multiplexed arrangement of optical fiber for sensing of operating conditions within a structural member and utilize fiber optic sensors for enabling monitoring of operating condition information within one or more elongated tubular members. To this end, fiber optic sensors are strategically placed at a plurality of locations along a length of each elongated tubular member thereby allowing critical operating conditions such as strain, temperature and pressure of the elongated tubular member and/or a fluid therein to be monitored. A multiplexing unit is used for allowing selective configuration of individual lengths of optical fiber for creating one or more contiguous optical fiber structures.

Working-state cable protection monitoring system, working-state cable protection monitoring method, and storage medium having stored therein working-state cable protection monitoring program

To suppress expansion of damage to a working-state cable due to work being continued without detecting breakage of the working-state cable when the breakage occurs, the working-state cable protection monitoring system is provided with: a working means that moves or installs a wire cable-shaped construction material including an optical fiber having at least one core; an interrogator that acquires environment information about each position of the construction material, sensed by the optical fiber; and an abnormal event detection means that, when the environment information acquired at each position of the construction material satisfies an abnormal pattern, detects an abnormal event at the position, where in the working means stops movement and installment of the wire cable-shaped construction material when the abnormal event has been detected.

作業中ケーブルの保護監視システム、作業中ケーブルの保護監視方法及び作業中ケーブルの保護監視プログラム

Submarine optical system

A common component assembly (10) is provided, for a cable joint for joining a first submarine optical cable and a second submarine optical cable. The assembly comprises: a first end face (71) comprising a first opening (73) and a first flange (72) for connection to a first cable termination unit (12) of an undersea optical cable joint; a second end face (81) comprising a second opening (83) and a second flange (82) for connection to a second cable termination unit (12) of an undersea optical cable joint; a fibre tray (85) connecting the first end face (71) to the second end face (81); and an optical assembly (185) connected to a first side of the fibre tray (85), the optical assembly (185) comprising a free space optical add/drop multiplexer.

一种悬浮式微细光缆快速接驳连接器及接驳方法

本发明公开了一种悬浮式微细光缆快速接驳连接器及接驳方法，接驳连接器包括有管状外壳、内管、两个尾套和浮力外罩，管状外壳分为内管连接部和设置于内管连接部两端的尾套连接部，内管的管壁上开设有贯通内管两端的条状开口，内管设置于管状外壳的内管连接部内，两个尾套的内端部螺纹连接于管状外壳的尾套连接部内，两个尾套的内端分别抵住内管的两端且两个尾套的内腔和内管的内腔相互连通，浮力外罩完全包覆于管状外壳和两个尾套的外部。本发明结构简单、体积小，便于现场快速实现微细光缆的接驳操作，且具有机械强度高、耐腐蚀和可悬浮性等优点。

一种水密光缆及其制备方法

本发明涉及一种水密光缆及其制备方法，光缆包括缆芯和包覆在缆芯外的护套层，所述缆芯包括中心加强件、光单元和水密层，所述光单元绞合设置在中心加强件外周，所述水密层填充在所述中心加强件和光单元之间的间隙，并包覆在光单元外周，所述中心加强件、光单元和水密层共同形成实心圆柱状结构，所述水密层的两端突出于所述中心加强件和光单元，在中心加强件和光单元两端形成封堵端头。本发明在缆芯的结构上进行改进，改变常规的阻水油膏和阻水带配合的阻水方式，对缆芯进行封闭，实现封闭式阻水。

Integrated 3-way branching unit switch module having small footprint

Aspects of the present disclosure describe systems, methods. and structures directed to an integrated 3-way branching unit switch module suitable for undersea application.

Dual tail shape compensation filter in submarine cable joint

Disclosed herein are undersea optical cable connection assemblies and systems. In some embodiments, a retainer is operable to arrange a plurality of SCFs and a plurality of microsplints, the retainer including a main body having a first section and a second section. The retainer may further include a first channel and a second channel extending through the first section, wherein a first set of SCFs extend through the first channel, and wherein a second set of SCFs extend through the second channel. The retainer may further include a third channel and a fourth channel extending through the first section, wherein a first set of microsplints extends through the third channel, and wherein a second set of microsplints extends through the fourth channel. A third set of microsplints extends through the third channel, wherein the first and third sets of microsplints are separated from one another by a padding layer.