EP3068685B1 - Fairlead for guiding an anchoring element - Google Patents

Fairlead for guiding an anchoring element Download PDF

Info

Publication number
EP3068685B1
EP3068685B1 EP14798811.7A EP14798811A EP3068685B1 EP 3068685 B1 EP3068685 B1 EP 3068685B1 EP 14798811 A EP14798811 A EP 14798811A EP 3068685 B1 EP3068685 B1 EP 3068685B1
Authority
EP
European Patent Office
Prior art keywords
guide
blocking
fairlead
anchoring
anchoring element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14798811.7A
Other languages
German (de)
French (fr)
Other versions
EP3068685A1 (en
Inventor
Arnaud TROUVE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Naval Energies SAS
Original Assignee
Naval Group SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Naval Group SA filed Critical Naval Group SA
Priority to PL14798811T priority Critical patent/PL3068685T3/en
Publication of EP3068685A1 publication Critical patent/EP3068685A1/en
Application granted granted Critical
Publication of EP3068685B1 publication Critical patent/EP3068685B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/04—Fastening or guiding equipment for chains, ropes, hawsers, or the like
    • B63B21/10—Fairleads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/18—Stoppers for anchor chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers

Definitions

  • the present invention relates to a fairlead for guiding an anchoring element.
  • it finds application in permanent anchor devices with an integrated chain stopper, in areas such as marine, offshore and marine renewable energies.
  • immersed anchor devices of the submerged fairlead type with integrated chain stopper, requires taking into account the forces experienced by the anchor line at the level of the apparatus, the behavior of the anchor line at the interface with the device and the ease of installation of the anchor line.
  • Permanent long-term anchorages are common to offshore sectors, with Floating Production Storage and Offloading (FPSO) and Floating Storage Regazification Units (FSRUs) as potential stay several decades on their production site.
  • FPSO Floating Production Storage and Offloading
  • FSRU Floating Storage Regazification Units
  • Offshore structures such as floating production supports, construction or drilling platforms, loading and unloading buoys, and recently the floating platforms of EMRs (offshore wind turbines, thermal energy of the seas, etc 7) are anchored on a desired site by means of anchor lines consisting of chains and / or cables connecting them to the anchoring points with the seabed.
  • chains connected to the anchor points are used, going up to the floating unit via fairleads serving as chain entry guides.
  • chain traction systems winches, windlasses .
  • chain restraining systems chain stoppers
  • anchored platforms require the use of numerous chains, anchors, anchors and additional equipment.
  • the anchoring devices are placed outside the deck, for example in hull planks, whether in an emergent or submerged manner.
  • anchor lines are pre-installed and connected to the anchor points. Then messenger lines are passed, from the deck of the floating unit, in the fairleads, termination connectors connecting these messenger lines to the anchor lines.
  • the anchor lines are then energized to the pre-tension required for anchoring, and the chain stops are activated to maintain the anchor lines in their configuration.
  • anchor chains are continuously working under the stresses induced by wind, swell, tides and currents.
  • the movements produced on the anchor chains accelerate fatigue breakage of the chains if curved guide guns or small radius sprockets are used. This is why anchor gear is usually designed with curved guides or large radius sprockets.
  • Anchoring equipment of this type is known, such as that described in FIG. US 4,742,993 .
  • This is a curved guide fairlead for anchor cables that can rotate freely around a vertical axis connected to the floating unit.
  • the device is designed for cables, and therefore does not include a chain stopper immersed.
  • the system uses a tubular body connected to a separate hinged assembly, and does not allow passing of the messenger line cable, chain, Kenter meshes and special connectors, as is usually required as part of the installation. anchor lines.
  • the foundations attaching the system to the floating support have a vertical axis pivotal connection with a first moving body.
  • This body serves as guidance to the anchor chain via the use of a sprocket or curved guide directly integrated.
  • An arm having at its end (anchor point side) the chain stopper is connected to the pivoting body via a horizontal axis pivotable connection allowing the final to accommodate changes in azimuth angles and elevation of the line. anchor.
  • the stopper is fixed which induces that any twist or torsion is taken over the next mesh of that maintained in the stopper. In the case of an extreme twist, this can be particularly detrimental to the fatigue strength of the anchor chain.
  • the loads and stresses that weigh on the anchoring lines at the level of the floating support are of different natures: corrosion and wear phenomena, impacts, fatigue in flexion (mainly out-of-plane bending), high tensions, phenomenon of spin / twist lines.
  • the known systems generally respond to the problem of fatigue in flexion out of the plane, but none solves the problem of spin / torsion of the anchor line.
  • the chain behaves non-linearly, which disrupts its normal operation.
  • the mesh undergoing this spin has its fatigue life drop very sharply.
  • One of the aims of the invention is therefore to solve the aforementioned problems, by proposing an anchor type anchor-type embedded chain stopper integrated which solves the problem of spin / torsion of the anchor line at the interface with the anchor.
  • the subject of the invention is a guide fairlead of an anchoring element having a longitudinal axis and allowing the anchoring of a unit, such as a floating unit, to an anchor point, said fairlead comprising guide means adapted to guide the anchoring element in translation between the unit and the anchor point, and locking means adapted to block the translation of the anchoring element in the guide means.
  • the locking means are mounted on the guide means at least partially free in rotation about an axis parallel to the longitudinal axis of the anchoring element when it is guided in the guide means.
  • the solution proposed by the invention secures the fatigue strength of the chain, reducing the strong degradation that occurs in the case of an extreme twist between two meshes, thanks to the torsional flexibility of the chain stopper system, also called locking means, over a defined angle range.
  • the fairlead shown figures 1 and 4a firstly comprises a fixing interface 6 intended to interface with the floating unit.
  • this fixing interface 6 generally called foundations 6, incorporate a vertically oriented axis of rotation.
  • a guide support 7 pivoting about this axis is mounted between the two foundations 6.
  • This guide support 7 constitutes a passage zone of the anchoring element C, not shown on FIG. figure 1 but represented on the Figure 4A in the form of an anchor chain C.
  • the guide support 7 supports a guide 8, 9 which at least partially defines a first passage for the anchoring element C.
  • the fixing interface assembly 6, guiding support 7 and guide 8, 9 constitutes a first guide assembly 1 which makes it possible to guide the anchoring element C in a first direction.
  • this first guide direction is generally substantially vertical.
  • a guide arm 2 extended by a guide cone 4 intended to facilitate the entry of the anchoring element C into the guide arm 2, forms a second guide assembly 2, 4.
  • the guide arm 2 is pivotally mounted on the first guide assembly 1 via an axis of rotation 2a, preferably perpendicular to the axis of pivoting of the guide support 7 of the first guide assembly 1.
  • the pivot axis of the guide support 7 of the first set 1 being generally substantially vertical, the axis 2a is substantially horizontal.
  • the second guide assembly 2, 4 is intended to guide the anchoring element C in a second direction which forms a non-zero angle with the first guide direction.
  • This second guide assembly 2, 4, and in particular the arm 2 allows the system to accommodate variations in elevation angles of the anchoring element C which is an anchor chain C in this example.
  • This anchor chain C passes into the arm 2 via the guide cone 4 and via locking means not shown on the figures 1 and 4a , before going back to the first guide assembly 1.
  • Transition means 3 are provided for guiding the anchoring element C at the transition between the first and second guide directions, therefore between the first guide assembly 1 and the second guide assembly 2, 4.
  • transition means comprise a gypsy type element 3, provided with a groove in addition to its footprints.
  • This gypsy 3 is mounted free to rotate about an axis 8a formed in a portion 8 of the guide 8, 9 pivoting from the first guide assembly 1.
  • transition means is the integration within the guide 8, 9 pivoting a curved guide, which is then formed in, or housed in this guide 8, 9 pivoting.
  • Such a curved guide is comparable to a guide rail integrated in the guide 8, 9 pivoting, with a given operating radius.
  • the first guide assembly 1, the second guide assembly 2, 4 and the transition means 3 thus constitute guide means 1 to 4, which make it possible to guide the anchoring element C in translation between the unit we want to anchor and anchor.
  • Locking means 5 visible on the figures 1 and 4b but shown in more detail in an example on Figures 2a and 2b , are mounted on the guide means 1 to 4, with a certain degree of freedom in rotation about an axis parallel to the longitudinal axis of the anchoring element C.
  • blocking means 5 also called chain stopper 5 in the case where the anchoring element C is an anchor chain C, are preferably mounted at the end of the arm 2 of the second set of 2, 4, substantially opposite the pivot axis 2a of the arm 2 relative to the guide 8, 9 of the first guide assembly 1.
  • the locking means 5 comprise a pivoting support 12, 19.
  • This pivoting support 12, 19 comprises a support element 12 provided with a ring 19, visible only on the figure 2b .
  • This ring 19 is pivotally mounted against a support ring 10 disposed in the guide means 1 to 4.
  • the support ring 10 is disposed at the end of the arm 2 of the second guide assembly 2, 4, as shown in FIG. figure 3a .
  • the locking means 5 can pivot on the arm 2, thanks to the cooperation between the ring 19 and the support ring 10.
  • the locking means 5 comprise second rotation limiting means 13a to 13d which cooperate with first rotation limiting means 15a to 15d disposed in the guide means 1 to 4.
  • the first rotation limiting means 15a to 15d comprise circular grooves 15a to 15d centered on the axis of rotation of the ring 19 with respect to the bearing ring 10, thus centered on the rotation axis of the locking means 5.
  • the second rotation limiting means 13a to 13d comprise elements 13a to 13d, such as pins 13a to 13d, which are each guided in rotation in the circular grooves 15a to 15d.
  • the rotation as the assembly of the locking means 5 relative to the arm 2 can be obtained with a single circular groove 15a to 15d cooperating with a single stud-type element 13a to 13d.
  • the locking means 5 comprise two locking elements 11a, 11b, of the type of valves 11a, 11b pivotally mounted on the support 12.
  • these locking elements 11a, 11b pivot on the support 12 between a locking position in which the anchoring element C is locked in translation. in the guide means 1 to 4, and a non-locking position in which the anchoring element C is free in translation in these guide means 1 to 4.
  • valves 11a and 11b stop the anchoring element C which passes through an opening 20 in the support 12, thus blocking its translation.
  • these valves 11a and 11b pivot away from the support 12, which has the effect of releasing the anchoring element C.
  • the shape of the opening 20 in the support 12, and the valves 11a, 11b, depends on the nature of the anchoring element C.
  • the anchoring element C is a chain C consisting of several links, and the opening 20 has a shape adapted to the passage of each link of the chain C.
  • the Valves 11a, 11b are adapted to lock the chain C between two of its links in the locking position.
  • a single valve-type locking element is used (not referenced) for the blocking means 5.
  • the single valve comes to stop the anchoring element C against the edge of a opening formed in the support 12, thus blocking its translation.
  • the single valve pivots away from the support 12, thus releasing the anchoring element C.
  • the blocking means 5 or stopper 5 are allowed to pivot about the longitudinal axis of the anchor line, at the end of the second guide assembly 2, 4, in a predefined angular range.
  • the allowed angular range is defined by the dimension of the studs 13a to 13d and the length of the grooves 15a to 15d.
  • Remote actuating means are provided on the blocking means 5, in order to enable activation or deactivation of the locking in translation of the anchoring element C in the guide means 1 to 4.
  • a first example of actuating means 14a, 14b is shown on the Figures 2a and 2b .
  • They may be actuators of the hydraulic or electric cylinder type 14a, 14b. We will then use an actuator 14a, 14b of this type by locking element 11a, 11b.
  • each actuator 14a, 14b is connected to the support 12, rotating about an axis parallel to the main plane of the support member 12, and opposite the pivot axis of the element of blocking 11a, 11b associated with the free end of this locking element 11a, 11b.
  • the other end of each actuator 14a, 14b is connected to the locking element 11a, 11b associated, in rotation about an axis parallel to the axis of pivoting of the locking element 11a, 11b relative to the support piece 12.
  • connection point of each actuator 14a, 14b to the associated blocking element 11a, 11b is sufficiently raised relative to the point of connection of this actuator 14a, 14b with the support 12, and sufficiently far from the pivot axis of this blocking element 11a, 11b relative to the support 12, so that the deployment of each actuator 14a, 14b effectively causes the pivoting of the locking element 11a, 11b associated with the locking position to the unlocking position.
  • the actuating means may also be mechanical actuating means 16a, 16b, 17a, 17b, 18a, 18b allowing the passage of the locking element or elements 11a, 11b from the blocking position to the non-locking position, and reciprocally.
  • FIG. 1 An example of such mechanical means is represented in part by figure 1 as well as Figure 4a and 4b .
  • the principle of such mechanical means consists in particular in providing the entire system with cables and accessories for returning to enable remote actuation of the locking elements 11a, 11b.
  • the guide means 1 to 4 are provided with rings 18a, 18b for guiding cables 16a, 16b along the guide means 1 to 4.
  • rings 18a, 18b can be arranged for example on the arm 2 of the second guide assembly 2, 4.
  • Each cable 16a, 16b is fixed on a locking element 11a, 11b, for example by means of rings 17a, 17b.
  • the fairlead according to the invention thus makes it possible to substantially reduce the forces due to torsion on the part of the anchoring element C which is held at the level of the blocking means 5.
  • This fairlead allows a rotation of the anchoring element C around its longitudinal axis over a defined range of angles. This relative freedom in rotation reduces all the problems on the units for which the anchor line may have twisted.
  • This fairlead thus improves the behavior of the anchor line C, reduces the stresses on the holding portion of the anchor line C, such as the holding mesh of an anchor chain C, and facilitates the installation of the anchor line C when connecting this anchor line C to a unit such as a floating unit.
  • the invention is not limited to the exclusive use of two locking elements 11a, 11b in the locking means, a single element, as shown in FIG. figure 4b , or more than two, may also be suitable.
  • the invention is not limited to means for limiting the rotation of the locking means 5 relative to the guide means 1 to 4, which consist in the cooperation between circular grooves 15a to 15d with studs 13a to 13d. .
  • Other solutions are possible to obtain this limitation.
  • the invention is not limited to the exclusive use of a gypsy type transition means 3.
  • a curved guide type transition means (not shown) which is formed in, or housed in the pivotable guide 8, 9 may also be suitable.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Bridges Or Land Bridges (AREA)
  • Piles And Underground Anchors (AREA)
  • Pivots And Pivotal Connections (AREA)

Description

La présente invention concerne un chaumard de guidage d'un élément d'ancrage. Elle trouve notamment une application aux appareils d'ancrage permanent de type chaumard immergé à stoppeur de chaîne intégré, dans les domaines tels que l'industrie marine, offshore, et les énergies marines renouvelables.The present invention relates to a fairlead for guiding an anchoring element. In particular, it finds application in permanent anchor devices with an integrated chain stopper, in areas such as marine, offshore and marine renewable energies.

La conception d'appareils d'ancrage immergés, de type chaumard immergé à stoppeur de chaîne intégré, nécessite de prendre en compte les efforts subits par la ligne d'ancrage au niveau de l'appareil, le comportement de la ligne d'ancrage à l'interface avec l'appareil et la facilité d'installation de la ligne d'ancrage.The design of immersed anchor devices, of the submerged fairlead type with integrated chain stopper, requires taking into account the forces experienced by the anchor line at the level of the apparatus, the behavior of the anchor line at the interface with the device and the ease of installation of the anchor line.

Ce type d'équipement a connu ses premiers développements avec les plateformes de forage offshore.This type of equipment has had its first developments with offshore drilling platforms.

Les ancrages permanents de longue durée sont communs aux secteurs de l'offshore, avec comme exemples les supports flottants de production du type FPSO (« Floating Production Storage and Offloading ») et FSRU (« Floating Storage Regazification Unit »), qui sont susceptibles de rester plusieurs dizaines d'années sur leur site de production.Permanent long-term anchorages are common to offshore sectors, with Floating Production Storage and Offloading (FPSO) and Floating Storage Regazification Units (FSRUs) as potential stay several decades on their production site.

Les nouveaux développements dans le domaine des Energies Marines Renouvelables (EMR) viennent compléter le marché préexistant de l'offshore.New developments in the field of Renewable Marine Energies (RMEs) complete the pre-existing offshore market.

Les structures offshores telles que les supports flottants de production, les plateformes de construction ou de forage, les bouées de chargement et déchargement, et dernièrement les plateformes flottantes des EMR (éoliennes offshore, énergies thermiques des mers, etc...) sont ancrées sur un site désiré au moyen de lignes d'ancrage constituées de chaînes et/ou de câbles les reliant aux points d'ancrage avec le fond marin.Offshore structures such as floating production supports, construction or drilling platforms, loading and unloading buoys, and recently the floating platforms of EMRs (offshore wind turbines, thermal energy of the seas, etc ...) are anchored on a desired site by means of anchor lines consisting of chains and / or cables connecting them to the anchoring points with the seabed.

Typiquement, pour des ancrages permanents, on utilise des chaînes connectées aux points d'ancrage, remontant jusqu'à l'unité flottante via des chaumards servant de guides d'entrée de chaînes. On utilise par ailleurs des systèmes de traction des chaines (treuils, guindeaux...) et finalement des systèmes de retenue des chaines (stoppeurs de chaînes) situés sur le pont de l'unité flottante.Typically, for permanent anchors, chains connected to the anchor points are used, going up to the floating unit via fairleads serving as chain entry guides. We also use chain traction systems (winches, windlasses ...) and finally chain restraining systems (chain stoppers) located on the deck of the floating unit.

De part leurs tailles imposantes, les plateformes ancrées nécessitent l'utilisation de nombreuses chaînes, apparaux d'ancrage, ancres et équipements complémentaires. En outre, pour ne pas augmenter l'encombrement existant sur le pont de ces plateformes, les apparaux d'ancrage sont placés à l'extérieur du pont comme par exemple en bordés de coque, que ce soit de manière émergée ou immergée.Owing to their imposing size, anchored platforms require the use of numerous chains, anchors, anchors and additional equipment. In addition, in order not to increase the existing bulk on the deck of these platforms, the anchoring devices are placed outside the deck, for example in hull planks, whether in an emergent or submerged manner.

En général, les lignes d'ancrage sont préinstallées et raccordées aux points d'ancrage. Puis des lignes messagères sont passées, à partir du pont de l'unité flottante, dans les chaumards, des connecteurs de terminaison raccordant ces lignes messagères aux lignes d'ancrage.In general, the anchor lines are pre-installed and connected to the anchor points. Then messenger lines are passed, from the deck of the floating unit, in the fairleads, termination connectors connecting these messenger lines to the anchor lines.

Les lignes d'ancrage sont ensuite mises sous tension à la prétension requise pour l'ancrage, puis les stoppeurs de chaîne sont activés pour maintenir les lignes d'ancrage dans leur configuration.The anchor lines are then energized to the pre-tension required for anchoring, and the chain stops are activated to maintain the anchor lines in their configuration.

Une des exigences sur ce type d'appareil d'ancrage est qu'ils doivent permettre de laisser passer la chaîne et/ou le câble, les accessoires de lignes (mailles Kenter, connecteurs spéciaux) et la ligne messagère.One of the requirements on this type of anchoring device is that they must allow to pass the chain and / or cable, line accessories (Kenter mesh, special connectors) and the messenger line.

Une fois que la plateforme est sécurisée par son ancrage, les chaînes d'ancrage sont continuellement en travail sous les sollicitations induites par le vent, la houle, les marées et les courants. Les mouvements produits sur les chaînes d'ancrage accélèrent les ruptures de fatigue des chaînes si des chaumards à guide incurvé ou à barbotin de faible rayon sont utilisés. C'est pourquoi les apparaux d'ancrage sont généralement conçus avec des guides incurvés ou barbotins de grand rayon.Once the platform is secured by anchoring, the anchor chains are continuously working under the stresses induced by wind, swell, tides and currents. The movements produced on the anchor chains accelerate fatigue breakage of the chains if curved guide guns or small radius sprockets are used. This is why anchor gear is usually designed with curved guides or large radius sprockets.

On connaît des équipements d'ancrage de ce type, tel que celui décrit dans le US 4,742,993 . Il s'agit d'un chaumard à guide incurvé pour câbles d'ancrage pouvant tourner librement autour d'un axe vertical relié à l'unité flottante.Anchoring equipment of this type is known, such as that described in FIG. US 4,742,993 . This is a curved guide fairlead for anchor cables that can rotate freely around a vertical axis connected to the floating unit.

Dans ce document, le dispositif est conçu pour des câbles, et ne comprend donc pas de stoppeur de chaîne immergé.In this document, the device is designed for cables, and therefore does not include a chain stopper immersed.

Un autre type d'équipements d'ancrage est décrit dans US 5,441,008 . Il s'agit d'un chaumard monté via une double liaison pivotante sur un bras rigide au bout duquel un stoppeur de chaine est intégré.Another type of anchoring equipment is described in US5,441,008 . It is a fairlead mounted via a double pivoting connection on a rigid arm at the end of which a chain stopper is integrated.

Le système utilise un corps tubulaire connecté à un montage séparé articulé, et ne permet pas de laisser passer le câble de la ligne messagère, la chaîne, les mailles Kenter et les connecteurs spéciaux, comme cela est requis généralement dans le cadre de l'installation des lignes d'ancrage.The system uses a tubular body connected to a separate hinged assembly, and does not allow passing of the messenger line cable, chain, Kenter meshes and special connectors, as is usually required as part of the installation. anchor lines.

Aucun de ces apparaux d'ancrage ne peut être utilisé sur les systèmes d'ancrage en place actuellement. En effet, la technologie existante utilise un encombrant chaumard immergé muni d'un barbotin à 7 poches. Pendant l'installation, un câble messager est dévidé à partir de l'unité flottante puis connecté par un navire d'assistance de type AHTS (Anchor Handling Tugs Supply) à la ligne d'ancrage installée au préalable. La ligne messagère est ensuite tirée depuis l'unité flottante, faisant passer le câble de la ligne messagère et les accessoires de lignes présents, via le chaumard, jusqu'à un équipement massif de pont sur lequel la chaîne est ensuite montée. Cet équipement permet de réaliser la phase finale de l'installation en mettant à la bonne prétension la ligne d'ancrage. Lorsque la prétension requise est obtenue, le stoppeur de chaîne est engagé.None of these anchors can be used on existing anchor systems. Indeed, the existing technology uses a bulky underwater fairlead equipped with a 7-pocket sprocket. During installation, a messenger cable is unloaded from the floating unit and connected by an Anchor Handling Tugs Supply (AHTS) to the pre-installed anchor line. The messenger line is then pulled from the floating unit, passing the messenger cable and line accessories through the fairlead to a massive deck equipment on which the chain is then mounted. This equipment allows carry out the final phase of the installation by putting the anchor line to the right pretension. When the required pretension is obtained, the chain stopper is engaged.

Le fait que le stoppeur de chaine soit localisé sur le pont de l'unité flottante vient donc encombrer le pont en parallèle d'augmenter les efforts sur celui-ci. Du fait de cette présence sur le pont, les charges transmises par les lignes d'ancrage sont ramenées sur le pont, ce qui oblige à utiliser un équipement plus massif et donc plus encombrement pour résister et transmettre les charges.The fact that the chain stopper is located on the bridge of the floating unit therefore encumber the bridge in parallel to increase the efforts on it. Because of this presence on the bridge, the loads transmitted by the anchor lines are brought back on the bridge, which requires the use of more massive equipment and therefore more space to resist and transmit loads.

On connaît encore un autre type d'équipements d'ancrage tel que décrit dans US 5,845,893 . Il s'agit d'un chaumard avec un stoppeur de chaîne intégré présentant l'architecture la plus répandue actuellement.Another type of anchoring equipment is known as described in US 5,845,893 . This is a fairlead with an integrated chain stopper featuring the most common architecture currently.

Les fondations fixant le système au support flottant présentent une liaison pivotante à axe vertical avec un premier corps en mouvement. Ce corps sert de guidage à la chaîne d'ancrage via l'utilisation d'un barbotin ou d'un guide incurvé directement intégré. Un bras présentant en son extrémité (côté point d'ancrage) le stoppeur de chaîne, est relié au corps pivotant via une liaison pivotante à axe horizontal permettant au final de s'accommoder des variations d'angles en azimut et élévation de la ligne d'ancrage.The foundations attaching the system to the floating support have a vertical axis pivotal connection with a first moving body. This body serves as guidance to the anchor chain via the use of a sprocket or curved guide directly integrated. An arm having at its end (anchor point side) the chain stopper is connected to the pivoting body via a horizontal axis pivotable connection allowing the final to accommodate changes in azimuth angles and elevation of the line. anchor.

Toutefois, le seul moyen de maintenance est de quitter le site d'opération et de ramener l'unité flottante en cale seiche.However, the only means of maintenance is to leave the operating site and bring the floating unit back to the cuttlefish hold.

Une amélioration de ce système au niveau de sa maintenance est décrite dans US 2012/0160146 . Il s'agit donc de faciliter la maintenance du système décrit dans US 5,845,893 , en rajoutant en parties supérieure et inférieure des fondations des pions de guidage permettant la retrait de l'équipement par le haut.An improvement of this system in its maintenance is described in US 2012/0160146 . It is therefore a question of facilitating the maintenance of the system described in US 5,845,893 , by adding in the upper and lower parts of the foundations guiding pins allowing removal of the equipment from above.

Dans tous ces systèmes, le stoppeur est fixe ce qui induit que toute vrille ou torsion est reprise sur la maille suivante de celle maintenue dans le stoppeur. Dans le cas d'une vrille extrême, cela peut être particulièrement néfaste à la tenue en fatigue de la chaîne d'ancrage.In all these systems, the stopper is fixed which induces that any twist or torsion is taken over the next mesh of that maintained in the stopper. In the case of an extreme twist, this can be particularly detrimental to the fatigue strength of the anchor chain.

Les charges et contraintes qui pèsent sur les lignes d'ancrage au niveau du support flottant sont de différentes natures : phénomènes de corrosion et d'usure, impacts, fatigue en flexion (majoritairement flexion hors-du-plan), fortes tensions, phénomène de vrille / torsion des lignes.The loads and stresses that weigh on the anchoring lines at the level of the floating support are of different natures: corrosion and wear phenomena, impacts, fatigue in flexion (mainly out-of-plane bending), high tensions, phenomenon of spin / twist lines.

Les systèmes connus répondent généralement à la problématique de fatigue en flexion hors-du-plan, mais aucun ne résout la problématique de vrille / torsion de la ligne d'ancrage. Lors d'une vrille de la ligne d'ancrage, la chaîne se comporte de manière non-linéaire, ce qui vient perturber son fonctionnement normal. En outre lors d'une vrille extrême (de l'ordre de 15°), la maille subissant cette vrille voit sa durée de vie en fatigue chuter très fortement.The known systems generally respond to the problem of fatigue in flexion out of the plane, but none solves the problem of spin / torsion of the anchor line. During a spin of the anchor line, the chain behaves non-linearly, which disrupts its normal operation. In addition, during an extreme spin (of the order of 15 °), the mesh undergoing this spin has its fatigue life drop very sharply.

Un des buts de l'invention est donc de résoudre les problèmes précités, en proposant un appareil d'ancrage de type chaumard immergé à stoppeur de chaîne intégré qui résout la problématique de vrille / torsion de la ligne d'ancrage à l'interface avec l'appareil d'ancrage.One of the aims of the invention is therefore to solve the aforementioned problems, by proposing an anchor type anchor-type embedded chain stopper integrated which solves the problem of spin / torsion of the anchor line at the interface with the anchor.

Ainsi, l'invention a pour objet un chaumard de guidage d'un élément d'ancrage présentant un axe longitudinal et permettant l'ancrage d'une unité, telle qu'une unité flottante, à un point d'ancrage, ledit chaumard comprenant des moyens de guidage aptes à guider l'élément d'ancrage en translation entre l'unité et le point d'ancrage, et des moyens de blocage aptes à bloquer la translation de l'élément d'ancrage dans les moyens de guidage.Thus, the subject of the invention is a guide fairlead of an anchoring element having a longitudinal axis and allowing the anchoring of a unit, such as a floating unit, to an anchor point, said fairlead comprising guide means adapted to guide the anchoring element in translation between the unit and the anchor point, and locking means adapted to block the translation of the anchoring element in the guide means.

Les moyens de blocage sont montés sur les moyens de guidage au moins partiellement libres en rotation autour d'un axe parallèle à l'axe longitudinal de l'élément d'ancrage lorsque celui-ci est guidé dans les moyens de guidage.The locking means are mounted on the guide means at least partially free in rotation about an axis parallel to the longitudinal axis of the anchoring element when it is guided in the guide means.

Suivant différentes variantes de réalisation, le système comprend une ou plusieurs des caractéristiques présentées ci-après, qui peuvent être prises isolément ou suivant toutes les combinaisons techniquement possibles :

  • les moyens de guidage comprennent une bague d'appui et des premiers moyens de limitation de rotation, et les moyens de blocage comprennent un support pivotant monté pivotant contre la bague d'appui, et pourvu de deuxièmes moyens de limitation de rotation aptes à coopérer avec les premiers moyens de limitation de rotation pour limiter la rotation des moyens de blocage,
  • les premiers moyens de limitation de rotation comprennent au moins une gorge circulaire formant au moins un arc de cercle centré sur l'axe de rotation des moyens de blocage, et les deuxièmes moyens de limitation de rotation comprennent au moins un élément apte à être guidé dans la gorge circulaire,
  • les moyens de blocage comprennent au moins un élément de blocage de type clapet monté pivotant sur le support entre une première position de blocage dans laquelle l'élément de blocage est apte à bloquer l'élément d'ancrage en translation dans les moyens de guidage, et une deuxième position sans blocage dans laquelle l'élément de blocage laisse l'élément d'ancrage libre en translation dans les moyens de guidage,
  • le ou les éléments de blocage sont pourvus de moyens d'actionnement mécaniques, hydrauliques ou électriques, permettant le passage de ces éléments de blocage de la position de blocage à la position sans blocage et réciproquement,
  • les moyens d'actionnement comprennent au moins un élément de type vérin dont une extrémité est reliée au support et l'autre extrémité est reliée à l'élément de blocage, en sorte que le déploiement des moyens d'actionnement entraîne le pivotement des éléments de blocage de la position de blocage vers la position sans blocage,
  • les moyens d'actionnement comprennent au moins un câble fixé sur l'élément de blocage, par exemple par l'intermédiaire d'un élément de type anneau, en sorte qu'une traction sur le câble entraîne le pivotement de l'élément de blocage de la position de blocage vers la position sans blocage,
  • les moyens de guidage comprennent un premier ensemble de guidage destiné à guider l'élément d'ancrage selon une première direction et comprenant une interface de fixation permettant la fixation du chaumard sur l'unité, et un deuxième ensemble de guidage, monté pivotant par rapport au premier ensemble de guidage autour d'un axe et destiné à guider l'élément d'ancrage dans une deuxième direction formant un angle non nul par rapport à la première direction, et les moyens de blocage sont montés sur le deuxième ensemble de guidage,
  • le premier ensemble de guidage comprend un support de guidage monté libre en rotation, autour d'un axe parallèle à la première direction, par rapport à l'interface de fixation, et un guide définissant au moins en partie un passage pour l'élément d'ancrage,
  • l'axe de pivotement du deuxième ensemble de guidage par rapport au premier ensemble de guidage est formé dans une première partie du guide et sensiblement à l'opposé des moyens de blocage,
  • les moyens de guidage comprennent des moyens de transition permettant de guider l'élément d'ancrage au niveau de la transition entre les première et deuxième directions de guidage,
  • les moyens de transition comprennent un élément de type barbotin monté libre en rotation autour d'un axe formé dans une deuxième partie du guide,
  • les moyens de transition comprennent un élément de type guide incurvé formé, ou logé, dans le guide,
  • les moyens de guidage comprennent un cône de guidage destiné à faciliter l'entrée de l'élément d'ancrage dans le deuxième ensemble de guidage.
According to various alternative embodiments, the system comprises one or more of the features presented below, which may be taken individually or in any technically possible combination:
  • the guiding means comprise a bearing ring and first rotation limiting means, and the locking means comprise a pivoting support pivotally mounted against the bearing ring, and provided with second rotation limiting means able to cooperate with the first rotation limiting means for limiting the rotation of the locking means,
  • the first means for limiting rotation comprise at least one circular groove forming at least one circular arc centered on the axis of rotation of the locking means, and the second rotation limiting means comprise at least one element that can be guided in the circular groove,
  • the locking means comprise at least one valve-type locking element pivotally mounted on the support between a first locking position in which the locking element is able to block the anchoring element in translation in the guide means, and a second non-locking position in which the locking element leaves the free anchoring element in translation in the guide means,
  • the locking element or elements are provided with mechanical, hydraulic or electrical actuating means, allowing the passage of these locking elements from the locking position to the non-locking position and vice versa,
  • the actuating means comprise at least one jack-type element, one end of which is connected to the support and the other end is connected to the locking element, so that the deployment of the actuating means causes the locking elements of the blocking position to pivot towards the position without blocking,
  • the actuating means comprise at least one cable fixed on the locking element, for example by means of a ring-type element, so that traction on the cable causes the locking element to pivot from the lock position to the unlocked position,
  • the guide means comprise a first guide assembly for guiding the anchoring element in a first direction and comprising a fixing interface for fixing the fairlead on the unit, and a second guide assembly pivotally mounted relative to at the first guide assembly about an axis and intended to guide the anchoring element in a second direction forming a non-zero angle with respect to the first direction, and the locking means are mounted on the second guide assembly,
  • the first guide assembly comprises a guide support rotatably mounted about an axis parallel to the first direction with respect to the attachment interface, and a guide defining at least a portion for the element anchor,
  • the pivot axis of the second guide assembly with respect to the first guide assembly is formed in a first portion of the guide and substantially opposite the locking means,
  • the guide means comprise transition means for guiding the anchoring element at the level of the transition between the first and second guide directions,
  • the transition means comprise a gypsy-type element mounted free to rotate about an axis formed in a second part of the guide,
  • the transition means comprise a curved guide-type element formed, or housed, in the guide,
  • the guide means comprise a guide cone for facilitating entry of the anchoring element into the second guide assembly.

Ainsi, la solution proposée par l'invention sécurise la tenue en fatigue de la chaîne, en réduisant la forte dégradation qui se produit dans le cas d'une vrille extrême entre deux mailles, grâce à la flexibilité en torsion du système stoppeur de chaîne, appelé également moyens de blocage, sur une plage d'angle définie.Thus, the solution proposed by the invention secures the fatigue strength of the chain, reducing the strong degradation that occurs in the case of an extreme twist between two meshes, thanks to the torsional flexibility of the chain stopper system, also called locking means, over a defined angle range.

Cette flexibilité autorise le stoppeur, et donc la maille de la chaîne tenue par le stoppeur, à pivoter autour de l'axe de la ligne d'ancrage. Les efforts de tension et les autres comportements de flexions dans-le-plan et hors-du-plan sont toujours présents au niveau des premières mailles situées en aval du stoppeur de chaîne (maille tenue et mailles suivantes), mais le phénomène de vrille / torsion est reporté sur plusieurs mailles supplémentaires situées en amont du stoppeur de chaîne. Les charges de torsion sont alors distribuées sur plus de mailles que dans le cas classique et le risque d'apparition d'une vrille extrême est largement réduit.This flexibility allows the stopper, and therefore the mesh of the chain held by the stopper, to pivot about the axis of the anchor line. Tensile stresses and other bending behaviors in-the-plane and out-of-plane are always present at the first meshes located downstream of the chain stopper (holding mesh and meshes following), but the phenomenon of spin / twist is reported on several additional meshes located upstream of the chain stopper. The torsional loads are then distributed over more meshes than in the classical case and the risk of occurrence of an extreme tendril is greatly reduced.

Les caractéristiques et avantages de l'invention apparaitront à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple, et non limitative, en référence aux figures annexées suivantes :

  • figure 1 : représentation schématique d'un exemple de chaumard de guidage selon l'invention ;
  • figures 2a et 2b : représentations schématiques d'un exemple de moyens de blocage équipant le chaumard de la figure 1 ;
  • figures 3a et 3b : représentations schématiques d'un deuxième ensemble de guidage formant une partie des moyens de guidage du chaumard de la figure 1 ;
  • figures 4a, 4b : représentations schématiques du chaumard de la figure 1, avec précisions sur un exemple de moyens d'actionnement mécaniques des moyens de blocage.
The features and advantages of the invention will appear on reading the description which follows, given solely by way of example, and not by way of limitation, with reference to the following appended figures:
  • figure 1 : schematic representation of an example of guide fairlead according to the invention;
  • Figures 2a and 2b : schematic representations of an example of locking means equipping the fairlead of the figure 1 ;
  • Figures 3a and 3b : schematic representations of a second guide assembly forming part of the guide means of the fairlead of the figure 1 ;
  • Figures 4a, 4b : schematic representations of the fairlead figure 1 , with details on an example of mechanical actuation means of the locking means.

Le chaumard représenté aux figures 1 et 4a comprend tout d'abord une interface de fixation 6 destinée à s'interfacer avec l'unité flottante.The fairlead shown figures 1 and 4a firstly comprises a fixing interface 6 intended to interface with the floating unit.

Les parties supérieure et inférieure de cette interface de fixation 6, généralement appelées fondations 6, intègrent un axe de rotation orienté verticalement.The upper and lower parts of this fixing interface 6, generally called foundations 6, incorporate a vertically oriented axis of rotation.

Un support de guidage 7 pivotant autour de cet axe est monté entre les deux fondations 6. Ce support de guidage 7 constitue une zone de passage de l'élément d'ancrage C non représentée sur la figure 1 mais représenté sur la figure 4A sous la forme d'une chaîne d'ancrage C.A guide support 7 pivoting about this axis is mounted between the two foundations 6. This guide support 7 constitutes a passage zone of the anchoring element C, not shown on FIG. figure 1 but represented on the Figure 4A in the form of an anchor chain C.

Dans cet exemple, le support de guidage 7 supporte un guide 8, 9 qui définit au moins partiellement un premier passage pour l'élément d'ancrage C.In this example, the guide support 7 supports a guide 8, 9 which at least partially defines a first passage for the anchoring element C.

L'ensemble interface de fixation 6, support de guidage 7 et guide 8, 9 constitue un premier ensemble de guidage 1 qui permet de guider l'élément d'ancrage C selon une première direction.The fixing interface assembly 6, guiding support 7 and guide 8, 9 constitutes a first guide assembly 1 which makes it possible to guide the anchoring element C in a first direction.

Dans l'exemple où le chaumard est fixé en bordé de coque, en vue de l'ancrage d'une unité flottante à un point d'ancrage situé sur un fond marin, cette première direction de guidage est généralement sensiblement verticale.In the example where the fairlead is fixed in shell plating, for anchoring a floating unit to an anchor point on a seabed, this first guide direction is generally substantially vertical.

Par ailleurs, un bras de guidage 2, prolongé par un cône de guidage 4 destiné à faciliter l'entrée de l'élément d'ancrage C dans le bras de guidage 2, forment un deuxième ensemble de guidage 2, 4.Furthermore, a guide arm 2, extended by a guide cone 4 intended to facilitate the entry of the anchoring element C into the guide arm 2, forms a second guide assembly 2, 4.

Le bras de guidage 2 est monté pivotant sur le premier ensemble de guidage 1 via un axe de rotation 2a, de préférence perpendiculaire à l'axe de pivotement du support de guidage 7 du premier ensemble de guidage 1.The guide arm 2 is pivotally mounted on the first guide assembly 1 via an axis of rotation 2a, preferably perpendicular to the axis of pivoting of the guide support 7 of the first guide assembly 1.

Dans l'exemple où le chaumard est fixé en bordé de coque, en vue de l'ancrage d'une unité flottante à un point d'ancrage situé sur un fond marin, l'axe de pivotement du support de guidage 7 du premier ensemble de guidage 1 étant généralement sensiblement vertical, l'axe 2a est sensiblement horizontal.In the example where the fairlead is fixed in shell plating, for the anchoring of a floating unit to an anchorage point located on a seabed, the pivot axis of the guide support 7 of the first set 1 being generally substantially vertical, the axis 2a is substantially horizontal.

Le deuxième ensemble de guidage 2, 4 est destiné à guider l'élément d'ancrage C dans une deuxième direction qui forme un angle non nul avec la première direction de guidage.The second guide assembly 2, 4 is intended to guide the anchoring element C in a second direction which forms a non-zero angle with the first guide direction.

Ce deuxième ensemble de guidage 2, 4, et notamment le bras 2, permet au système de s'accommoder des variations d'angles en élévation de l'élément d'ancrage C qui est une chaîne d'ancrage C dans cet exemple. Cette chaîne d'ancrage C passe dans le bras 2 via le cône de guidage 4 puis via des moyens de blocage non représentés sur les figures 1 et 4a, avant de remonter vers le premier ensemble de guidage 1.This second guide assembly 2, 4, and in particular the arm 2, allows the system to accommodate variations in elevation angles of the anchoring element C which is an anchor chain C in this example. This anchor chain C passes into the arm 2 via the guide cone 4 and via locking means not shown on the figures 1 and 4a , before going back to the first guide assembly 1.

Des moyens de transition 3 sont prévus pour guider l'élément d'ancrage C au niveau de la transition entre les première et deuxième direction de guidage, donc entre le premier ensemble de guidage 1 et le deuxième ensemble de guidage 2, 4.Transition means 3 are provided for guiding the anchoring element C at the transition between the first and second guide directions, therefore between the first guide assembly 1 and the second guide assembly 2, 4.

Dans l'exemple représenté sur les figures 1, 4a, 4b, ces moyens de transition comprennent un élément de type barbotin 3, muni d'une gorge en plus de ses empreintes. Ce barbotin 3 est monté libre en rotation autour d'un axe 8a formé dans une partie 8 du guide 8, 9 pivotant du premier ensemble de guidage 1.In the example shown on the figures 1 , 4a, 4b these transition means comprise a gypsy type element 3, provided with a groove in addition to its footprints. This gypsy 3 is mounted free to rotate about an axis 8a formed in a portion 8 of the guide 8, 9 pivoting from the first guide assembly 1.

Une autre possibilité pour ces moyens de transition consiste dans l'intégration au sein du guide 8, 9 pivotant d'un guide incurvé, qui est alors formé dans, ou logé dans ce guide 8, 9 pivotant.Another possibility for these transition means is the integration within the guide 8, 9 pivoting a curved guide, which is then formed in, or housed in this guide 8, 9 pivoting.

Un tel guide incurvé est assimilable à un rail de guidage intégré au guide 8, 9 pivotant, avec un rayon de fonctionnement donné.Such a curved guide is comparable to a guide rail integrated in the guide 8, 9 pivoting, with a given operating radius.

Le premier ensemble de guidage 1, le deuxième ensemble de guidage 2, 4 et les moyens de transition 3 constituent donc des moyens de guidage 1 à 4, qui permettent de guider l'élément d'ancrage C en translation entre l'unité que l'on souhaite ancrer et le point d'ancrage.The first guide assembly 1, the second guide assembly 2, 4 and the transition means 3 thus constitute guide means 1 to 4, which make it possible to guide the anchoring element C in translation between the unit we want to anchor and anchor.

Des moyens de blocage 5, visibles sur les figures 1 et 4b, mais représentés plus en détail dans un exemple sur les figures 2a et 2b, sont montés sur les moyens de guidage 1 à 4, avec un certain degré de liberté en rotation autour d'un axe parallèle à l'axe longitudinal de l'élément d'ancrage C.Locking means 5, visible on the figures 1 and 4b but shown in more detail in an example on Figures 2a and 2b , are mounted on the guide means 1 to 4, with a certain degree of freedom in rotation about an axis parallel to the longitudinal axis of the anchoring element C.

Ces moyens de blocage 5, que l'on appelle aussi stoppeur de chaîne 5 dans le cas où l'élément d'ancrage C est une chaîne d'ancrage C, sont de préférence montés à l'extrémité du bras 2 du deuxième ensemble de guidage 2, 4, sensiblement à l'opposé de l'axe 2a de pivotement du bras 2 par rapport au guide 8, 9 du premier ensemble de guidage 1.These blocking means 5, also called chain stopper 5 in the case where the anchoring element C is an anchor chain C, are preferably mounted at the end of the arm 2 of the second set of 2, 4, substantially opposite the pivot axis 2a of the arm 2 relative to the guide 8, 9 of the first guide assembly 1.

Dans l'exemple représenté notamment sur les figures 2a et 2b, les moyens de blocage 5 comprennent un support pivotant 12, 19. Ce support pivotant 12, 19 comprend un élément support 12 pourvu d'une bague 19, visible seulement sur la figure 2b. Cette bague 19 est montée pivotante contre une bague d'appui 10 disposée dans les moyens de guidage 1 à 4.In the example represented in particular on Figures 2a and 2b , the locking means 5 comprise a pivoting support 12, 19. This pivoting support 12, 19 comprises a support element 12 provided with a ring 19, visible only on the figure 2b . This ring 19 is pivotally mounted against a support ring 10 disposed in the guide means 1 to 4.

Plus précisément, dans cet exemple, la bague d'appui 10 est disposée à l'extrémité du bras 2 du deuxième ensemble de guidage 2, 4, tel que représenté à la figure 3a.More specifically, in this example, the support ring 10 is disposed at the end of the arm 2 of the second guide assembly 2, 4, as shown in FIG. figure 3a .

Ainsi, les moyens de blocage 5 peuvent pivoter sur le bras 2, grâce à la coopération entre la bague 19 et la bague d'appui 10.Thus, the locking means 5 can pivot on the arm 2, thanks to the cooperation between the ring 19 and the support ring 10.

Par ailleurs, les moyens de blocage 5 comprennent des deuxièmes moyens de limitation de rotation 13a à 13d qui coopèrent avec des premiers moyens de limitation de rotation 15a à 15d disposés dans les moyens de guidage 1 à 4.Furthermore, the locking means 5 comprise second rotation limiting means 13a to 13d which cooperate with first rotation limiting means 15a to 15d disposed in the guide means 1 to 4.

Plus précisément, dans cet exemple, les premiers moyens de limitation de rotation 15a à 15d comprennent des gorges circulaires 15a à 15d centrées sur l'axe de rotation de la bague 19 par rapport à la bague d'appui 10, donc centrées sur l'axe de rotation des moyens de blocage 5.More specifically, in this example, the first rotation limiting means 15a to 15d comprise circular grooves 15a to 15d centered on the axis of rotation of the ring 19 with respect to the bearing ring 10, thus centered on the rotation axis of the locking means 5.

Par ailleurs, les deuxièmes moyens de limitation de rotation 13a à 13d comprennent des éléments 13a à 13d, tels que des goujons 13a à 13d, qui sont chacun guidés en rotation dans les gorges circulaires 15a à 15d.Furthermore, the second rotation limiting means 13a to 13d comprise elements 13a to 13d, such as pins 13a to 13d, which are each guided in rotation in the circular grooves 15a to 15d.

La rotation tout comme l'assemblage des moyens de blocage 5 par rapport au bras 2 peuvent être obtenus avec une unique gorge circulaire 15a à 15d coopérant avec un unique élément de type goujon 13a à 13d.The rotation as the assembly of the locking means 5 relative to the arm 2 can be obtained with a single circular groove 15a to 15d cooperating with a single stud-type element 13a to 13d.

Mais on utilise de préférence 4 gorges circulaires 15a à 15d et 4 éléments de type goujons 13a à 13d équidistants sur un cercle centré sur l'axe de rotation des moyens de blocage 5.But preferably four circular grooves 15a to 15d and four stud-like elements 13a to 13d are used equidistant on a circle centered on the axis of rotation of the locking means 5.

Dans l'exemple représenté notamment sur les figures 2a et 2b, les moyens de blocage 5 comprennent deux éléments de blocage 11a, 11b, de type clapets 11a, 11b montés pivotant sur le support 12.In the example represented in particular on Figures 2a and 2b , the locking means 5 comprise two locking elements 11a, 11b, of the type of valves 11a, 11b pivotally mounted on the support 12.

Plus précisément, ces éléments de blocage 11a, 11b pivote sur le support 12 entre une position de blocage dans laquelle l'élément d'ancrage C est bloqué en translation dans les moyens de guidage 1 à 4, et une position sans blocage dans laquelle l'élément d'ancrage C est libre en translation dans ces moyens de guidage 1 à 4.More precisely, these locking elements 11a, 11b pivot on the support 12 between a locking position in which the anchoring element C is locked in translation. in the guide means 1 to 4, and a non-locking position in which the anchoring element C is free in translation in these guide means 1 to 4.

Dans l'exemple avec deux éléments de blocage 11a, 11b, de type clapets 11a, 11b, en position de blocage, les clapets 11a et 11b viennent arrêter l'élément d'ancrage C qui passe dans une ouverture 20 dans le support 12, bloquant ainsi sa translation. En position sans blocage, ces clapets 11a et 11b pivotent en s'éloignant du support 12 ce qui a pour effet de libérer l'élément d'ancrage C.In the example with two locking elements 11a, 11b, of the type of valves 11a, 11b, in the locked position, the valves 11a and 11b stop the anchoring element C which passes through an opening 20 in the support 12, thus blocking its translation. In the non-locking position, these valves 11a and 11b pivot away from the support 12, which has the effect of releasing the anchoring element C.

La forme de l'ouverture 20 dans le support 12, et des clapets 11a, 11b, dépend de la nature de l'élément d'ancrage C.The shape of the opening 20 in the support 12, and the valves 11a, 11b, depends on the nature of the anchoring element C.

Ainsi, dans l'exemple représenté dans les figures, l'élément d'ancrage C est une chaîne C constituée de plusieurs maillons, et l'ouverture 20 présente une forme adaptée au passage de chaque maillon de la chaîne C. Par ailleurs, la forme des clapets 11a, 11b est adaptée au blocage de la chaîne C entre deux de ses maillons dans la position de blocage.Thus, in the example shown in the figures, the anchoring element C is a chain C consisting of several links, and the opening 20 has a shape adapted to the passage of each link of the chain C. Moreover, the Valves 11a, 11b are adapted to lock the chain C between two of its links in the locking position.

Dans un autre exemple, tel que celui représenté à la figure 4b, un seul élément de blocage de type clapet est utilisé (non référencé) pour les moyens de blocage 5. Dans un tel exemple en position de blocage, l'unique clapet vient arrêter l'élément d'ancrage C contre le bord d'une ouverture formée dans le support 12, bloquant ainsi sa translation. En position sans blocage, l'unique clapet pivote en s'éloignant du support 12, libérant ainsi l'élément d'ancrage C.In another example, such as the one shown in figure 4b , a single valve-type locking element is used (not referenced) for the blocking means 5. In such an example in the locking position, the single valve comes to stop the anchoring element C against the edge of a opening formed in the support 12, thus blocking its translation. In the non-locking position, the single valve pivots away from the support 12, thus releasing the anchoring element C.

Ainsi, les moyens de blocage 5 ou stoppeur 5 sont autorisés à pivoter autour de l'axe longitudinal de la ligne d'ancrage, à l'extrémité du deuxième ensemble de guidage 2, 4, dans une plage angulaire prédéfinie. Dans l'exemple présenté, la plage angulaire autorisée est définie par la dimension des goujons 13a à 13d et la longueur des gorges 15a à 15d.Thus, the blocking means 5 or stopper 5 are allowed to pivot about the longitudinal axis of the anchor line, at the end of the second guide assembly 2, 4, in a predefined angular range. In the example presented, the allowed angular range is defined by the dimension of the studs 13a to 13d and the length of the grooves 15a to 15d.

Des moyens d'actionnement à distance sont prévus sur les moyens de blocage 5, en vue de permettre l'activation ou la désactivation du blocage en translation de l'élément d'ancrage C dans les moyens de guidage 1 à 4.Remote actuating means are provided on the blocking means 5, in order to enable activation or deactivation of the locking in translation of the anchoring element C in the guide means 1 to 4.

Un premier exemple de moyens d'actionnement 14a, 14b est représenté sur les figures 2a et 2b.A first example of actuating means 14a, 14b is shown on the Figures 2a and 2b .

Il s'agit de moyens 14a, 14b électriques ou hydrauliques, qui permettent le passage du ou des éléments de blocage 11a, 11b de la position de blocage à la position sans blocage, et réciproquement.These are means 14a, 14b electrical or hydraulic, which allow the passage of the locking element or elements 11a, 11b from the locking position to the non-locking position, and vice versa.

Il peut s'agir d'actionneurs de type vérins hydrauliques ou électriques 14a, 14b. On utilisera alors un actionneur 14a, 14b de ce type par élément de blocage 11a, 11b.They may be actuators of the hydraulic or electric cylinder type 14a, 14b. We will then use an actuator 14a, 14b of this type by locking element 11a, 11b.

Précisément, une des extrémités de chaque actionneur 14a, 14b est connectée au support 12, en rotation autour d'un axe parallèle au plan principal de la pièce support 12, et à l'opposé de l'axe de pivotement de l'élément de blocage 11a, 11b associé par rapport à l'extrémité libre de cet élément de blocage 11a, 11b. L'autre extrémité de chaque actionneur 14a, 14b est connectée à l'élément de blocage 11a, 11b associé, en rotation autour d'un axe parallèle à l'axe de pivotement de l'élément de blocage 11a, 11b par rapport à la pièce support 12.Specifically, one of the ends of each actuator 14a, 14b is connected to the support 12, rotating about an axis parallel to the main plane of the support member 12, and opposite the pivot axis of the element of blocking 11a, 11b associated with the free end of this locking element 11a, 11b. The other end of each actuator 14a, 14b is connected to the locking element 11a, 11b associated, in rotation about an axis parallel to the axis of pivoting of the locking element 11a, 11b relative to the support piece 12.

Le point de connexion de chaque actionneur 14a, 14b à l'élément de blocage 11a, 11b associé, est suffisamment surélevé par rapport au point de connexion de cet actionneur 14a, 14b avec le support 12, et suffisamment éloigné de l'axe de pivotement de cet élément de blocage 11a, 11b par rapport au support 12, de sorte que le déploiement de chaque actionneur 14a, 14b entraîne effectivement le pivotement de l'élément de blocage 11a, 11b associé de la position de blocage vers la position de déblocage.The connection point of each actuator 14a, 14b to the associated blocking element 11a, 11b is sufficiently raised relative to the point of connection of this actuator 14a, 14b with the support 12, and sufficiently far from the pivot axis of this blocking element 11a, 11b relative to the support 12, so that the deployment of each actuator 14a, 14b effectively causes the pivoting of the locking element 11a, 11b associated with the locking position to the unlocking position.

Le câblage hydraulique ou électrique, non représenté sur les figures, remonte jusqu'aux servitudes de bord, de sorte que ces moyens d'actionnement 14a, 14b peuvent être actionnés à distance.The hydraulic or electrical wiring, not shown in the figures, goes back to the edge servitudes, so that these actuating means 14a, 14b can be operated remotely.

Les moyens d'actionnement peuvent également être des moyens d'actionnement mécaniques 16a, 16b, 17a, 17b, 18a, 18b, permettant le passage du ou des éléments de blocage 11a, 11b de la position de blocage à la position sans blocage, et réciproquement.The actuating means may also be mechanical actuating means 16a, 16b, 17a, 17b, 18a, 18b allowing the passage of the locking element or elements 11a, 11b from the blocking position to the non-locking position, and reciprocally.

Un exemple de tels moyens mécaniques est représenté en partie en figure 1, ainsi qu'en figure 4a et 4b.An example of such mechanical means is represented in part by figure 1 as well as Figure 4a and 4b .

Le principe de tels moyens mécaniques consiste notamment à munir l'ensemble du système de câbles et accessoires de renvoi pour permettre un actionnement à distance des éléments de blocage 11a, 11b.The principle of such mechanical means consists in particular in providing the entire system with cables and accessories for returning to enable remote actuation of the locking elements 11a, 11b.

Plus précisément, les moyens de guidage 1 à 4 sont pourvus d'anneaux 18a, 18b permettant le guidage de câbles 16a, 16b le long des moyens de guidage 1 à 4. De tels anneaux 18a, 18b peuvent être disposés par exemple sur le bras 2 du deuxième ensemble de guidage 2, 4.More specifically, the guide means 1 to 4 are provided with rings 18a, 18b for guiding cables 16a, 16b along the guide means 1 to 4. Such rings 18a, 18b can be arranged for example on the arm 2 of the second guide assembly 2, 4.

Chaque câble 16a, 16b est fixé sur un élément de blocage 11a, 11b, par exemple par l'intermédiaire d'anneaux 17a, 17b.Each cable 16a, 16b is fixed on a locking element 11a, 11b, for example by means of rings 17a, 17b.

Ainsi, une traction sur l'un des câbles 16a, 16b entraîne le pivotement de l'élément de blocage 11a, 11b associé de la position de blocage vers la position sans blocage.Thus, traction on one of the cables 16a, 16b causes the pivoting element 11a, 11b to pivot from the locking position to the non-locking position.

On peut prévoir des moyens de retour en force des éléments de blocage 11a, 11b, de sorte que lorsque les câbles 16a, 16b sont relachés, ces éléments de blocage 11a, 11b reviennent automatiquement et reste en position de blocage.It is possible to provide force return means for the locking elements 11a, 11b so that when the cables 16a, 16b are released, these locking elements 11a, 11b automatically return and remain in the locking position.

On peut également prévoir un système de contrôle de la tension dans les lignes d'ancrage en utilisant des capteurs d'efforts positionnés par exemple sur le bras 2.It is also possible to provide a system for controlling the tension in the anchoring lines by using force sensors positioned for example on the arm 2.

Le chaumard selon l'invention permet donc de réduire sensiblement les efforts dus à la torsion sur la partie de l'élément d'ancrage C qui est tenue au niveau des moyens de blocage 5. Dans le cas de l'utilisation d'une chaîne d'ancrage C, on réduit sensiblement de tels efforts sur la maille qui est tenue au niveau du stoppeur de chaîne 5.The fairlead according to the invention thus makes it possible to substantially reduce the forces due to torsion on the part of the anchoring element C which is held at the level of the blocking means 5. In the case of the use of a chain anchoring C, substantially reduces such forces on the mesh which is held at the level of the chain stopper 5.

Ce chaumard permet une rotation de l'élément d'ancrage C autour de son axe longitudinal sur une plage d'angles définie. Cette liberté relative en rotation réduit l'ensemble des problèmes sur les unités pour lesquelles la ligne d'ancrage peut avoir vrillée.This fairlead allows a rotation of the anchoring element C around its longitudinal axis over a defined range of angles. This relative freedom in rotation reduces all the problems on the units for which the anchor line may have twisted.

En outre, en fonctionnement, la possibilité d'un dégagement de la maille d'une chaîne d'ancrage C hors des logements spécifiques prévus au niveau du ou des éléments de blocage 11a, 11b du stoppeur de chaîne 5 est largement réduite.In addition, in operation, the possibility of disengagement of the mesh of an anchor chain C from the specific housings provided at the level of the locking element or elements 11a, 11b of the chain stopper 5 is greatly reduced.

Ce chaumard améliore donc le comportement de la ligne d'ancrage C, réduit les sollicitations subies par la portion tenue de la ligne d'ancrage C, telle que la maille tenue d'une chaîne d'ancrage C, et facilite l'installation de la ligne d'ancrage C lors du raccordement de cette ligne d'ancrage C à une unité telle qu'une unité flottante.This fairlead thus improves the behavior of the anchor line C, reduces the stresses on the holding portion of the anchor line C, such as the holding mesh of an anchor chain C, and facilitates the installation of the anchor line C when connecting this anchor line C to a unit such as a floating unit.

La présente description est donnée à titre d'exemple et n'est pas limitative de l'invention.The present description is given by way of example and is not limiting of the invention.

En particulier, l'invention ne se limite pas à l'utilisation exclusive de deux éléments de blocage 11a, 11b dans les moyens de blocage, un seul élément, tel que représenté à la figure 4b, ou plus de deux, pouvant également convenir.In particular, the invention is not limited to the exclusive use of two locking elements 11a, 11b in the locking means, a single element, as shown in FIG. figure 4b , or more than two, may also be suitable.

Egalement, l'invention ne se limite pas à des moyens de limitation de la rotation des moyens de blocage 5 par rapport aux moyens de guidage 1 à 4, qui consistent en la coopération entre des gorges circulaires 15a à 15d avec des goujons 13a à 13d. D'autres solutions sont envisageables pour obtenir cette limitation.Also, the invention is not limited to means for limiting the rotation of the locking means 5 relative to the guide means 1 to 4, which consist in the cooperation between circular grooves 15a to 15d with studs 13a to 13d. . Other solutions are possible to obtain this limitation.

Egalement, l'invention ne se limite pas à l'utilisation exclusive d'un moyen de transition 3 de type barbotin. Un moyen de transition de type guide incurvé (non représenté) qui est formé dans, ou logé dans le guide 8, 9 pivotant peut également convenir.Also, the invention is not limited to the exclusive use of a gypsy type transition means 3. A curved guide type transition means (not shown) which is formed in, or housed in the pivotable guide 8, 9 may also be suitable.

Claims (14)

  1. A fairlead for guiding an anchoring element (C) having a longitudinal axis and allowing the anchoring of a unit, such as a floating unit, to an anchoring point, said fairlead comprising guide means (1 to 4) able to guide the translation of the anchoring element (C) between the unit and the anchoring point, and blocking means (5) able to block the translation of the anchoring element (C) in the guide means (1 to 4),
    characterized in that the blocking means (5) are mounted on the guide means (1 to 4) at least partially freely rotating around an axis parallel to the longitudinal axis of the anchoring element (C) when the latter is guided in the guide means (1 to 4).
  2. The fairlead according to claim 1, characterized in that
    - the guide means (1 to 4) comprise a bearing ring (10) and first rotation limiting means (15a to 15d),
    - and in that the blocking means (5) comprise a pivoting support (12, 19) mounted pivoting against the bearing ring (10), and provided with a second rotation limiting means (13a to 13d) able to cooperate with the first rotation limiting means (15a to 15d) to limit the rotation of the blocking means (5).
  3. The fairlead according to claim 2, characterized in that the first rotation limiting means (15a to 15d) comprise at least one circular groove (15a to 15d) forming at least one arc of circle centered on the rotation axis of the blocking means(5), and in that the second rotation limiting means (13a to 13d) comprise at least one element (13a to 13d) able to be guided in the circular groove (15a to 15d).
  4. The fairlead according to any one of claims 2 and 3, characterized in that the blocking means (5) comprise at least one blocking element (11a, 11b) of the gate type mounted pivoting on the support (12) between a first blocking position in which the blocking element (11a, 11b) is able to block the anchoring element (C) in translation in the guide means (1 to 4), and a second position without blocking in which the blocking element (11a, 11b) leaves the anchoring element (C) freely translating in the guide means (1 to 4).
  5. The fairlead according to claim 4, characterized in that the blocking element(s) (11a, 11b) are provided with mechanical (16a, 16b, 17a, 17b, 18a, 18b), hydraulic (14a, 14b) or electric (14a, 14b) actuating means (14a, 14b, 16a, 16b, 17a, 17b, 18a, 18b), allowing the passage of these blocking elements (11a, 11b) from the blocking position to the position without blocking, and vice versa.
  6. The fairlead according to claim 5, characterized in that the actuating means (14a, 14b) comprise at least one element of the jack type whereof one end is connected to the support (12) and the other end is connected to the blocking element (11a, 11b), such that the deployment of the actuating means (14a, 14b) drives the pivoting of the blocking elements (11a, 11b) from the blocking position toward the position without blocking.
  7. The fairlead according to claim 5, characterized in that the actuating means (16a, 16b, 17a, 17b, 18a, 18b) comprise at least one cable (16a, 16b) fixed on the blocking element (11a, 11b), for example via an element of the ring type (17a, 17b), such that traction on the cable (16a, 16b) drives the pivoting of the blocking element from the blocking position (11a, 11b) toward the position without blocking.
  8. The fairlead according to any one of claims 1 to 7, characterized in that the guide means (1 to 4) comprise a first guide assembly (1) designed to guide the anchoring element (C) in a first direction and comprising a fastening interface (6) allowing the fastening of the fairlead on the unit, and a second guide assembly (2, 4), mounted pivoting relative to the first guide assembly (1) around an axis (2a) and intended to guide the anchoring element (C) in a second direction forming a non-zero angle relative to the first direction, and in that the blocking means (5) are mounted on the second guide assembly (2, 4).
  9. The fairlead according to claim 8, characterized in that the first guide assembly (1) comprises a guide support (7) mounted freely rotating, around an axis parallel to the first direction, relative to the fastening interface (6), and a guide (8, 9) defining at least part of a passage for the anchoring element (C).
  10. The fairlead according to claim 9, characterized in that the pivot axis (2a) of the second guide assembly (2, 4) relative to the first guide assembly (1) is formed in a first part (9) of the guide (8, 9) and substantially opposite the blocking means (5).
  11. The fairlead according to any one of claims 8 to 10, characterized in that the guide means (1 to 4) comprise transition means (3) making it possible to guide the anchoring element (C) at the transition between the first and second guide directions.
  12. The fairlead according to claim 11, characterized in that the transition means (3) comprise an element of the guide wheel type (3) mounted freely rotating around an axis (8a) formed in a second part (8) of the guide (8, 9).
  13. The fairlead according to claim 11, characterized in that the transition means (3) comprise an element of the curved guide type formed, or housed, in the guide (8, 9).
  14. The fairlead according to any one of claims 8 to 13, characterized in that the guide means (1 to 4) comprise a guide cone (4) intended to facilitate the entry of the anchoring element (C) in the second guide element (2, 4).
EP14798811.7A 2013-11-15 2014-11-12 Fairlead for guiding an anchoring element Active EP3068685B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14798811T PL3068685T3 (en) 2013-11-15 2014-11-12 Fairlead for guiding an anchoring element

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1361239A FR3013312B1 (en) 2013-11-15 2013-11-15 GUIDE BOILER FOR ANCHORING ELEMENT
PCT/EP2014/074386 WO2015071318A1 (en) 2013-11-15 2014-11-12 Fairlead for guiding an anchoring element

Publications (2)

Publication Number Publication Date
EP3068685A1 EP3068685A1 (en) 2016-09-21
EP3068685B1 true EP3068685B1 (en) 2018-01-03

Family

ID=50482909

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14798811.7A Active EP3068685B1 (en) 2013-11-15 2014-11-12 Fairlead for guiding an anchoring element

Country Status (9)

Country Link
US (1) US9975606B2 (en)
EP (1) EP3068685B1 (en)
JP (1) JP6560209B2 (en)
KR (1) KR102155228B1 (en)
DK (1) DK3068685T3 (en)
FR (1) FR3013312B1 (en)
NO (1) NO3068685T3 (en)
PL (1) PL3068685T3 (en)
WO (1) WO2015071318A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2993945B1 (en) * 2012-07-24 2014-08-29 Dcns SYSTEM FOR FIXING A HEAT CELL IN A SUBMARINE ENGINE FEEDING SECTION
FR3013312B1 (en) * 2013-11-15 2016-01-08 Dcns GUIDE BOILER FOR ANCHORING ELEMENT
WO2015199611A1 (en) * 2014-06-27 2015-12-30 Promor Pte Ltd A method of supporting a chain stopper on a vessel, a chain stopper assembly for a vessel, and a vessel
FR3026085B1 (en) * 2014-09-19 2018-01-12 Nov-Blm CHAUMARD DESTINATES TO COOPERATE WITH AN ANCHORAGE CHAIN, FOR A FLOATING SYSTEM ANCHORING SYSTEM ON THE GROUND
US10407134B2 (en) * 2015-12-28 2019-09-10 Sierra Madre Marine LLC Chain flaker system, to distribute anchor chain evenly in anchor chain locker
FR3049924B1 (en) * 2016-04-11 2018-05-04 Dcns OFFSHORE STRUCTURE COMPRISING AT LEAST ONE CHAUMARD
GB2553499B (en) * 2016-08-01 2021-08-04 Flinstone Tech Ltd Mooring tensioner
US10974792B2 (en) 2016-08-01 2021-04-13 Flintstone Technology Limited Mooring tensioner and methods thereof
KR101885166B1 (en) * 2017-02-27 2018-08-06 삼성중공업(주) Fairlead chain stopper and method of installing the same
KR101916697B1 (en) * 2017-08-18 2018-11-09 삼성중공업 주식회사 Fairead chain stopper device
US10597267B2 (en) * 2018-01-26 2020-03-24 Hall Labs Llc Variable radius fairlead
CN112041222B (en) * 2018-03-02 2022-10-04 威斯尼系泊链及连接器公司 Tensioner for mooring line of floating structure
CN109501963B (en) * 2018-10-25 2021-03-02 方育贞 Ship guide cable work control method
CN109204700A (en) * 2018-10-30 2019-01-15 大连海事大学 Chain wheel for hawse pipe cable stopper

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2599200A (en) * 1950-12-15 1952-06-03 Andrew E Rogers Anchor raising and lowering means
US3289626A (en) * 1965-08-19 1966-12-06 Mcdermott & Co J Ray Chain stoppers
DE1228384B (en) * 1965-09-24 1966-11-10 Demag Zug Gmbh Chain guide with cross-shaped guide grooves for round steel chains
NL145331B (en) * 1967-11-14 1975-03-17 Ihc Holland Nv CHAIN STOPPER.
US3810359A (en) * 1973-01-15 1974-05-14 Columbus Mc Kinon Corp Load chain loose end stop
US4398387A (en) * 1982-03-08 1983-08-16 Columbus Mckinnon Corporation Chain travel stop
NO151452C (en) * 1982-08-03 1986-10-21 Bergens Mek Verksted DEVICE WITH CHAIN DRIVE CHAIN STOCK SYSTEM AND CLOSE FOR USE IN THE DEVICE.
US5845893A (en) * 1997-03-14 1998-12-08 Bardex Engineering, Inc. Underwater self-aligning fairlead latch device for mooring a structure at sea
US5934216A (en) * 1997-09-16 1999-08-10 Oceaneering International Inc. Method and apparatus for tensioning and deploying mooring chain
NO309464B1 (en) * 2000-04-28 2001-02-05 Maritime Pusnes As Sliding shoe light with built-in chain stop
US6983714B2 (en) * 2001-06-15 2006-01-10 Technip France Method of and apparatus for offshore mooring
US6817595B1 (en) * 2002-02-05 2004-11-16 Fmc Technologies, Inc. Swing arm chain support method
US7240633B2 (en) * 2004-04-30 2007-07-10 Timberland Equipment Limited Underwater chain stopper and fairlead apparatus for anchoring offshore structures
US7325508B2 (en) * 2005-03-24 2008-02-05 Sofec, Inc. Dual-axis chain support assembly
NO330879B1 (en) * 2009-01-23 2011-08-08 I P Huse As Device by fairlead
EP2414217B1 (en) * 2009-04-02 2013-04-17 Single Buoy Moorings Inc. Disconnectable chain connector
NO334174B1 (en) * 2009-11-17 2013-12-30 Smart Installations As Cutting device, method and application for cutting a line from a floating vessel
US8915205B2 (en) * 2010-12-23 2014-12-23 Bardex Corporation Fairlead latch device
US8770039B2 (en) * 2011-05-23 2014-07-08 Sofec, Inc. Load monitoring arrangement for chain support
US9266703B2 (en) * 2011-08-16 2016-02-23 Resolve Marine Group, Inc. Chain stopper for chain puller
FR2984272B1 (en) * 2011-12-14 2014-06-13 Nov Blm CHAUMARD FOR GUIDING AN ANCHORING CHAIN FOR EQUIPPING AN ANCHORING SYSTEM ON THE GROUND OF A FLOATING PLATFORM
DE102012112329B4 (en) * 2012-12-14 2020-04-23 Konecranes Global Corp. Chain hoist with improved chain infeed
US9199697B2 (en) * 2013-10-02 2015-12-01 Sofec, Inc. Dual axis chain support with chain guide
FR3013312B1 (en) * 2013-11-15 2016-01-08 Dcns GUIDE BOILER FOR ANCHORING ELEMENT
US9475679B2 (en) * 2014-09-09 2016-10-25 Konecranes Global Corporation Chain hoist

Also Published As

Publication number Publication date
JP2016537251A (en) 2016-12-01
FR3013312B1 (en) 2016-01-08
KR20160084396A (en) 2016-07-13
WO2015071318A1 (en) 2015-05-21
NO3068685T3 (en) 2018-06-02
US9975606B2 (en) 2018-05-22
US20160280333A1 (en) 2016-09-29
EP3068685A1 (en) 2016-09-21
KR102155228B1 (en) 2020-09-11
JP6560209B2 (en) 2019-08-14
FR3013312A1 (en) 2015-05-22
PL3068685T3 (en) 2019-07-31
DK3068685T3 (en) 2018-03-26

Similar Documents

Publication Publication Date Title
EP3068685B1 (en) Fairlead for guiding an anchoring element
US7240633B2 (en) Underwater chain stopper and fairlead apparatus for anchoring offshore structures
US20060283368A1 (en) Fairlead with integrated chain stopper
FR2689603A1 (en) Device for mounting a flexible line comprising a curvature limiter.
FR2941434A1 (en) SYSTEM FOR TRANSFERRING A FLUID PRODUCT AND ITS IMPLEMENTATION
FR3106332A1 (en) Cambering device for profiled sail
EP1779000B1 (en) Anchoring system for installing in a surface moved according to high-frequency movements
WO2012010746A2 (en) Self-aligning socket for mooring cable
EP3442857B1 (en) Offshore structure having at least one fairlead
US9604704B2 (en) Dual axis chain stopper
EP3442858B1 (en) Fairlead for guiding an anchoring element of an offshore structure
WO2018065385A1 (en) Automatic-opening fairlead and towing device comprising the fairlead
FR3093699A1 (en) Semi-submersible wind turbine float, associated wind turbine assembly and anchoring method
FR2755091A1 (en) DEVICE FOR CONNECTING TWO MARINE STRUCTURES
WO2015136183A1 (en) Chain stopper for a floating unit and associated anchoring system for a floating unit
FR3066753A1 (en) MOORING ROD OF A MOORING BUOY
FR2594406A1 (en) Device for rapid casting off and recovery of a mooring especially for an oil platform
WO2023247216A1 (en) System for locking and unlocking an elongated element with a sheath and an attachment element at either end of the sheath
FR3134793A1 (en) External turret mooring device and ship comprising such an external turret mooring device.
FR2768118A1 (en) Anchoring system for tanker loading from marine oil installation
FR3033154A1 (en) CARENE, CARENAGE, CARENE EXTENSION ELEMENT AND TOWING ASSEMBLY
WO2016135322A1 (en) Towing assembly
WO2019197645A1 (en) Facility for using fluid in a stretch of water, and associated assembly and operating method
EP3261913A1 (en) Fairing, elongate faired element and towing assembly

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20160513

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIN1 Information on inventor provided before grant (corrected)

Inventor name: TROUVE, ARNAUD

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20170803

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: NAVAL GROUP

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 959984

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180115

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602014019496

Country of ref document: DE

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

Effective date: 20180319

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

REG Reference to a national code

Ref country code: NO

Ref legal event code: CHAD

Owner name: NAVAL ENERGIES, FR

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: NO

Ref legal event code: T2

Effective date: 20180103

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 959984

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180103

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 602014019496

Country of ref document: DE

Owner name: SAIPEM S.A., FR

Free format text: FORMER OWNER: NAVAL GROUP, PARIS, FR

Ref country code: DE

Ref legal event code: R082

Ref document number: 602014019496

Country of ref document: DE

Representative=s name: LAVOIX MUNICH, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 602014019496

Country of ref document: DE

Owner name: NAVAL ENERGIES, FR

Free format text: FORMER OWNER: NAVAL GROUP, PARIS, FR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180103

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180103

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180103

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180103

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180103

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: NAVAL ENERGIES

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20180719 AND 20180725

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180103

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180103

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180404

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180403

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180103

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180503

REG Reference to a national code

Ref country code: NL

Ref legal event code: PD

Owner name: NAVAL ENERGIES; FR

Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), ASSIGNMENT; FORMER OWNER NAME: NAVAL GROUP

Effective date: 20180720

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180103

REG Reference to a national code

Ref country code: BE

Ref legal event code: PD

Owner name: NAVAL ENERGIES; FR

Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), CESSION, CONFIRMATIVE DEED OF TRANSFER OF OWNERSHIP + SPECIAL POWER OF ATTORNEY.; FORMER OWNER NAME: NAVAL GROUP

Effective date: 20180719

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602014019496

Country of ref document: DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180103

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180103

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180103

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180103

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180103

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180103

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180103

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

Owner name: NAVAL ENERGIES, FR

Effective date: 20181031

26N No opposition filed

Effective date: 20181005

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180103

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181112

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181130

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20141112

Ref country code: MK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180103

REG Reference to a national code

Ref country code: NO

Ref legal event code: CHAD

Owner name: NAVAL ENERGIES, FR

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 602014019496

Country of ref document: DE

Owner name: SAIPEM S.A., FR

Free format text: FORMER OWNER: NAVAL ENERGIES, PARIS, FR

REG Reference to a national code

Ref country code: NO

Ref legal event code: CHAD

Owner name: SAIPEM S.A., FR

REG Reference to a national code

Ref country code: NL

Ref legal event code: PD

Owner name: SAIPEM SA; FR

Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), ASSIGNMENT; FORMER OWNER NAME: NAVAL GROUP

Effective date: 20221220

REG Reference to a national code

Ref country code: BE

Ref legal event code: PD

Owner name: SAIPEM S.A; FR

Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), ASSIGNMENT; FORMER OWNER NAME: NAVAL ENERGIES

Effective date: 20221206

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20230126 AND 20230201

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230525

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20231023

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20231120

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20231117

Year of fee payment: 10

Ref country code: NO

Payment date: 20231024

Year of fee payment: 10

Ref country code: IE

Payment date: 20231019

Year of fee payment: 10

Ref country code: FR

Payment date: 20231012

Year of fee payment: 10

Ref country code: DK

Payment date: 20231025

Year of fee payment: 10

Ref country code: DE

Payment date: 20231107

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20231018

Year of fee payment: 10

Ref country code: BE

Payment date: 20231113

Year of fee payment: 10