Dynamic sealing member of a rotating joint device of an energy exploitation installation

Abstract

The invention relates to a dynamic sealing member (30) configured to equip a rotating joint device and comprising a first section (60) provided with a first heel (65) and, at a first end (61), a first securing member (66) formed of at least one protuberance (67) provided projecting from the first heel, a second section (62) provided with a second heel (68) and, at a second end (63), a second securing member (69) formed of at least one cavity (70) provided in the second heel, and the dynamic sealing member is configured such that in an assembled closed configuration where the first end and the second end are opposite each other, the at least one first section and the at least one second section overlap at least partially,with the at least one protuberance of the first securing member which is at least partially housed in a sealed manner in the at least one cavity of the second securing member. figure for the abstract: figure 6,

Description

Title of the invention: Dynamic sealing member of a rotating joint device of an energy exploitation installation TECHNICAL FIELD OF THE INVENTION

[0001] The invention relates to a dynamic sealing member configured to equip a rotating joint device of an energy exploitation installation, of the fluidic and / or electrical type, in particular located on an offshore type platform.

[0002] The invention relates, in a second aspect, to a rotating joint device configured to equip an energy exploitation installation, of the fluidic and / or electrical type, in particular located on an offshore type platform, and comprising at least one such dynamic sealing member.

[0003] The invention relates, in a third aspect, to an energy exploitation installation, of the fluidic and / or electrical type, in particular located on an offshore type platform, and comprising at least one such rotating joint device.

[0004] The invention relates, in a fourth aspect, to a method of assembling at least one such dynamic sealing member. STATE OF THE ART

[0005] The rotating joint devices configured to equip energy exploitation installations in the maritime domain can be installed on ships, structures allowing the production and / or distribution of energy, of the fluidic and / or electrical type, and / or the fluidic and / or electrical connection.

[0006] An example of such an installation is for oil or gas production, and in particular allows the exploitation of offshore hydrocarbon fields.

[0007] Another example of such an installation is aimed at electricity production, and in particular allows the exploitation of wind farms located at sea.

[0008] Floating production and / or storage and / or processing and / or unloading units may be formed by a vessel which is mobile, due to its environment, around a mooring turret which is geostationary. The vessel may be temporarily secured to the turret.

[0009] The installations may comprise conduits and cables which form an underwater network and which allow energy, fluid and / or electrical communication for the energy transfer between the seabed and the ship or between the wind turbines and the ship.

[0010] Such swivel joint devices may be part of a swivel joint assembly comprising a stack of sealing swivel joint devices (“swivel stack device” in English terminology).

[0011] Such rotating joint devices are configured to transfer energy, of the fluidic and / or electrical type, for example between the floating unit, in particular the ship, which is mobile, and the mooring turret which is fixed.

[0012] To ensure sealing and energy transfer between the floating unit and the turret, the rotating joint devices are provided with a first part, called fixed, secured to the turret and a second part, called mobile, secured to the ship. The second part of the rotating joint devices is therefore mobile in rotation relative to the first part of the rotating joint devices.

[0013] The rotating joint devices have an internal chamber delimited by the first part and by the second part. This internal chamber is generally closed and fluid-tight.

[0014] For example, the rotating joint devices may be provided with several dynamic sealing members, called dynamic seals, arranged in spaces provided between the first fixed part and the second mobile part of the rotating joint devices.

[0015] Such dynamic sealing members may, for example, comprise lips whose function is to ensure sealing against fluids.

[0016] In the event of failure, the dynamic sealing members may need to be replaced in situ, i.e. directly on the installation.

[0017] In particular, the replacement of such a dynamic sealing member in a rotating joint device, for example in a stack of rotating joint devices, must be able to be done directly on the rotating joint device concerned and ideally without having to dismantle the other rotating joint devices in the stack.

[0018] European patent EP 0 988 141 describes a method of manufacturing by so-called butt welding a dynamic sealing member. In particular, it teaches placing two end faces of this member against each other, holding them, heating them and pressing them against each other so as to form the annular dynamic sealing member for its installation in the rotating joint device.

[0019] European patent EP 2 350 223 describes a method of forming a sealing ring, comprising the steps of heating an extruded thermoplastic rod to a temperature above a glass transition temperature, the extruded rod having first and second ends, bending the extruded rod to form a circular structure while the temperature is above the glass transition temperature, pressing the first and second ends against each other, thereby joining the first and second ends of the extruded rod to form a semi-finished ring, and annealing the semi-finished ring.

[0020] European patent EP 3 102 385 describes a process similar to that described in European patent EP 2 350 223, except that the bending is carried out at room temperature, maintaining stresses on the rod which are lower than its elastic limit. Statement of the invention

[0021] The invention relates to a dynamic sealing member configured to equip a rotating joint device of an energy exploitation installation, of the fluidic and / or electrical type, in particular located on an offshore platform, which is particularly efficient while being simple, convenient and economical.

[0022] The invention thus relates, in a first aspect, to a dynamic sealing member configured to equip a rotating joint device of an energy exploitation installation, of the fluidic and / or electrical type, in particular located on an offshore platform, the dynamic sealing member admitting an unassembled open configuration and an assembled closed configuration in which the dynamic sealing member has a generally annular shape and is configured to be housed in the rotating joint device, characterized in that the dynamic sealing member comprises at least a first section provided with a first heel and, at a first end, a first securing member formed by at least one protuberance provided projecting from the first heel, the dynamic sealing member further comprises at least a second section provided with a second heel and, at a second end,of a second securing member formed of at least one cavity formed in the second heel, and the dynamic sealing member is configured so that in its assembled closed configuration where the first end and the second end are opposite each other, the at least one first section and the at least one second section overlap at least partially, with the at least one protuberance of the first securing member which is at least partially housed in a sealed manner in the at least one cavity of the second securing member.

[0023] According to the invention, the dynamic sealing member is transformed from its unassembled open configuration to its assembled closed configuration by abutting, overlapping and mechanically assembling the first and second sections at the first and second ends.

[0024] Such a mechanical assembly allows the dynamic sealing member, once in its assembled closed configuration, to ensure both adequate transmission of mechanical forces and good sealing between the first and second sections.

[0025] Such a mechanical assembly is furthermore particularly simple and convenient.

[0026] Preferred, simple, convenient and economical characteristics of the dynamic sealing member according to the invention are presented below.

[0027] The second securing member may be provided with at least one sealing wall arranged longitudinally and projecting from the second heel, and the first securing member may have at least one first receiving housing. arranged longitudinally in the first heel and being configured to receive the at least one sealing wall in the assembled closed configuration of the dynamic sealing member.

[0028] The at least one sealing wall can be housed in the at least one cavity of the second securing member and the at least one first receiving housing can be provided in the at least one protuberance of the first securing member.

[0029] The at least one sealing wall may extend longitudinally beyond the at least one cavity of the second securing member and the at least one first receiving housing may extend into the first heel beyond the at least one protuberance of the first securing member.

[0030] The at least one sealing wall may project beyond the second end and the receiving housing may have a complementary recess provided in the first heel.

[0031] The at least one cavity of the second securing member may include at least one side wall that has a first serrated or textured surface, and the at least one protrusion of the first securing member may include at least one side wall that has a second serrated or textured surface complementary to the first serrated or textured surface.

[0032] The first and second complementary serrated or textured surfaces create a progressive pressurization space, provided with a plurality of baffles, which in particular makes it possible to ensure a sealed coupling of the first section with the second section, in the assembled closed configuration of the dynamic sealing member.

[0033] In other words, the progressive pressurization space defines a gradual pressure build-up path in the assembled closed configuration of the dynamic sealing member.

[0034] The first securing member may be provided with a tab extending longitudinally beyond the first end, and the second securing member is provided with a detent notch provided longitudinally in the second heel, with the tab and the detent notch being configured to engage in a snap-fit ​​manner in the assembled closed configuration of the dynamic sealing member.

[0035] For example, the cooperation of the tab and the snap-in notch respectively of the first securing member and the second securing member can form an assembly lock of the first section with the second section.

[0036] The dynamic sealing member may comprise a plurality of distinct segments each provided with a first section and a second section, with the first section of a first segment being configured to cooperate with the second section of a second segment, and the first section of the second segment being configured to cooperate with the second section of the first segment or with the second section of a third segment.

[0037] In other words, the dynamic sealing member can be modular and if necessary, it is possible to replace only one module formed by one or more segments.

[0038] The invention also relates, in a second aspect, to a rotating joint device configured to equip an energy exploitation installation, of the fluidic and / or electrical type, in particular located on an offshore platform, comprising a first annular part secured to a fixed mooring turret of the installation, a second annular part movable in rotation around an axis and relative to the first annular part and secured to a mobile ship of the installation, characterized in that the rotating joint device comprises at least one dynamic sealing member as described above, housed inside a spacing space located between the first annular part and the second annular part.

[0039] The at least one dynamic sealing member may also be provided to center the first annular part and the second annular part relative to each other, and / or to guide them mechanically and / or to transmit forces from one to the other.

[0040] The invention also relates, in a third aspect, to an energy exploitation installation, of the fluidic and / or electrical type, in particular located on an offshore platform, comprising at least one rotating joint device as described above.

[0041] The invention also relates, in a fourth aspect, to a method for assembling at least one dynamic sealing member as described above, comprising the steps of arranging the first end and the second end facing each other, of at least partially overlapping the at least one first section and the at least one second section, and of at least partially housing in a sealed manner the at least one protuberance of the first securing member in the at least one cavity of the second securing member; the dynamic sealing member thus passing from its unassembled open configuration to its assembled closed configuration by abutting, overlapping and mechanically assembling the first and second sections at the first and second ends.

[0042] The method may comprise a step of applying an adhesive to the first and second ends, in particular before the mechanical assembly of the first and second sections, so as to at least partially bond the first and second ends during this assembly.

[0043] The method may comprise a step of heating the first and second ends, in particular before and / or after the mechanical assembly of the first and second sections, so as to at least partially fuse the first and second ends. BRIEF DESCRIPTION OF THE FIGURES

[0044] We will now continue the description of the invention by describing exemplary embodiments, given below for illustrative and non-limiting purposes, with reference to the appended drawings.

[0045] [Fig. 1] schematically and partially represents an energy exploitation installation, here of the fluidic type, located here on an offshore platform, provided with a ship, a mooring turret, a network of underwater pipes allowing fluidic communication for the transfer of fluids between the seabed and the ship, and a rotating joint device ensuring the seal between the ship and the turret and the integrity of the transfer of fluids.

[0046] [Fig.2] is a top view of the rotating joint device of the installation illustrated in [Fig.l].

[0047] [Fig. 3] is a partial sectional view of the rotating joint device, marked III-III in [Fig. 2].

[0048] [Fig. 4] schematically represents in top view a dynamic sealing member of the rotating joint device of figures 2 and 3, in an open, unassembled configuration.

[0049] [Fig.5] is a view similar to [Fig.4], showing the dynamic sealing member in an assembled closed configuration.

[0050] [Fig.6] is a partial perspective view, from above, showing the assembly of the dynamic sealing member and the transition from its open configuration to its closed configuration.

[0051] [Fig.7] is a view similar to that of [Fig.6], but from below.

[0052] [Fig.8] is a view similar to that of [Fig.6].

[0053] [Fig.9] is a partial perspective view of the dynamic sealing member in its closed configuration.

[0054] [Fig. 10] is a sectional view marked XX in [Fig. 9].

[0055] [Fig. 11] schematically represents in perspective an alternative embodiment of the dynamic sealing member in its closed configuration. DETAILED DESCRIPTION OF THE INVENTION

[0056] [Fig.l] illustrates an energy exploitation installation 1, here of the fluidic type, located on an offshore platform.

[0057] In the example illustrated, installation 1 is a fluid exploitation installation allowing the exploitation of offshore hydrocarbon fields 2.

[0058] The installation 1, also called a floating production, storage and unloading unit, is provided with a ship 3 which is mobile, due to its environment formed by the sea 2, and a mooring turret 4 which is geostationary and around which the ship 3 is mobile.

[0059] The mooring turret 4 is mechanically secured to the seabed 2 via underwater anchors 5.

[0060] The ship 3 is movable relative to the mooring turret 4 by means of a rolling mechanism 7.

[0061] The installation 1 is here provided with conduits 6 which form a network of underwater pipes allowing fluid communication to transfer fluid between the seabed and the ship 3.

[0062] In the example illustrated, the fluid circulating in the conduits 6 comes from the bottom of the sea 2.

[0063] The installation 1 comprises a rotating joint device 10 ensuring the seal between the ship 3 and the mooring turret 4, and ensuring the integrity of the transfer of fluids.

[0064] The rotating joint device 10 may be formed from a rotating joint (“swivel device”). in Anglo-Saxon terminology) or a stack of such joints (“swivel stack device” in Anglo-Saxon terminology).

[0065] As illustrated in Figures 2 and 3, such a rotating joint device 10 is generally annular and comprises a first annular part 11, called fixed, which is configured to be secured to the mooring turret 4, as well as a second annular part 12, called mobile, which is configured to be secured to the ship 3.

[0066] In the example illustrated, the second annular part 12 is movable in rotation around an axis of rotation X ([Fig.3]) and relative to the first annular part 11, by means of a guide mechanism, here of the rolling member type 13, interposed between the first and second annular parts 11 and 12.

[0067] The rotating joint device 10 has an internal space 14 defined here by a surface internal 15 of the first annular part 11.

[0068] The installation 1 further comprises a transfer conduit 16 connected, directly or indirectly, to at least one of the underwater conduits 6.

[0069] The transfer conduit 16 enters the rotating joint device 10 through its internal space 14 and opens outside the rotating joint device 10 through an outlet connection 17.

[0070] The transfer conduit 16 thus passes through the rotating joint device 10, entering the first annular part 11 and exiting through the second annular part 12.

[0071] [Fig. 3] shows in section the rotating joint device 10 of [Fig. 2] and illustrates more in detail a fluid path through the rotating joint device 10 and the cooperation between the first and second annular parts 11 and 12.

[0072] The rotating joint device 10 is provided with a transfer chamber 18 formed partially by a first orifice 19 formed in the first annular part 11, and by a second orifice 20 formed in the second annular part 12 and at least partially opposite the first orifice 19.

[0073] The transfer chamber 18 is here annular, or toroidal.

[0074] The first orifice 19 opens at the level of the internal surface 15 of the first annular part 11 into a first portion of the transfer conduit 16 located in the internal space 14 of the rotating joint device 10 and which is connected to the underwater conduits 6.

[0075] The second orifice 20 opens at an external surface 21 of the second annular part 12 into a second portion of the transfer conduit 16 located outside the rotating joint device 10 and which comprises the outlet connector 17.

[0076] An arrow illustrated in [Fig.3] shows the fluid path taken by the fluid coming from the conduits 6 and conveyed by the transfer conduit 16 passing through the first and second annular parts 11 and 12 of the rotating joint device 10, up to the outlet connection 17.

[0077] The rotating joint device 10 is further provided with a spacing space 22 located between the first annular part 11 and the second annular part 12.

[0078] The spacing space 22 is provided to allow rotation of the second annular part 12 relative to the first annular part 11.

[0079] In the illustrated example, the spacing space 22 is interrupted by the transfer chamber 18.

[0080] Thus, on an upper portion 23 of the rotating joint device 10, the spacing space 22 extends from the bearing member 13 until it opens into the transfer chamber 18; while on a lower portion 24 of the rotating joint device 10, the spacing space 22 opens at one end into the transfer chamber 18 and opens at an opposite end outside the rotating joint device 10.

[0081] The transfer chamber 18 is here interposed between the upper and lower portions 23 and 24.

[0082] In particular, the spacing space 22 is provided between an external surface of the first annular part 11, which external surface is opposite its internal surface 15, and an internal surface of the second annular part 12, which internal surface is opposite its external surface 21.

[0083] The rotating joint device 10 comprises dynamic sealing members 30 housed at least partially inside the spacing space 22, in the upper and lower portions 23 and 24 of the rotating joint device 10.

[0084] In the illustrated example, there are three dynamic sealing members 30 which are housed at least partially inside the spacing space 22 in the upper portion 23 of the rotating joint device 10, one of which is at the level of the bearing member 13, and three dynamic sealing members 30 which are housed at least partially inside the spacing space 22 in the lower portion 24 of the rotating joint device 10.

[0085] The rotating joint device 10 here further comprises several protection devices 35 for the dynamic sealing members 30.

[0086] One of the protection devices 35 is for example housed at least partially inside the spacing space 22 in the upper portion 23 of the rotating joint device 10 and the other two protection devices 35 are housed at least partially inside the spacing space 22 in the lower portion 24 of the rotating joint device 10.

[0087] The rotating joint device 10 here also comprises a cleaning device 50 configured to evacuate debris that said fluid may contain and which is formed by a channel formed in the second annular part 12 and which opens into the spacing space 22 at the level of a protection device 35.

[0088] Alternatively, the rotating joint device may comprise more or fewer dynamic sealing members, and it may be devoid of a protection device and / or a cleaning device.

[0089] The dynamic sealing members 30 are provided to seal the spacing space 22.

[0090] The dynamic sealing members 30 may also be provided to center the first annular part and the second annular part relative to each other, and / or to guide them mechanically and / or to transmit forces from one to the other.

[0091] In the event of failure, the dynamic sealing members 30 may need to be replaced in situ, i.e. directly on the installation 1.

[0092] In particular, the replacement of such a dynamic sealing member 30 in a rotating joint device 10, for example in a stack of rotating joint devices, must be able to be done directly on the rotating joint device 10 concerned and ideally without having to dismantle the other rotating joint devices in the stack.

[0093] Figures 4 to 10 show an example of a dynamic sealing member 30 configured to equip the rotating joint device 10 of the energy exploitation installation 1, and provided for example to replace another worn or defective dynamic sealing member.

[0094] In particular, the dynamic sealing member 30 is configured to admit a unassembled open configuration ([Fig.4] in particular) and an assembled closed configuration (figures 5 and 9 in particular).

[0095] In the example illustrated, the dynamic sealing member 30 comprises a first section 60 having a first end 61 and a second section 62 having a second end 63.

[0096] The dynamic sealing member 30 further comprises a third section 64 extending between and joining the first section 60 and the second section 62.

[0097] The first end 61 and the second end 63 here respectively define two opposite ends of the dynamic sealing member 30.

[0098] Furthermore, the dynamic sealing member 30 is here configured so that the first section 60, the second section 62 and the third section 64 are made in a single piece, and the first end 61 of the first section 60 is here opposite and at a distance from the second end 63 of the second section 62.

[0099] Thus, it is possible to insert the dynamic sealing member 30 in its unassembled open configuration into the rotating joint device 10 via the first end 61 of the first section 60 or via the second end 63 of the second section 62, so as to allow replacement of another dynamic sealing member to be replaced.

[0100] [Fig.5] illustrates the dynamic sealing member 30 in its assembled closed configuration, wherein the dynamic sealing member 30 has a generally annular shape and is configured to be housed in the rotary joint device and seal the gap.

[0101] In the assembled closed configuration of the dynamic sealing member 30, the first section 60 and the second section 62 overlap at least partially so that the first end of the first section 60 and the second end of the second section 62 (not visible in this figure) are opposite each other, and superimposed.

[0102] [Fig.6] and 7 illustrate in detail the first end 61 of the first section 60 and the second end 63 of the second section 62.

[0103] In particular, the dynamic sealing member 30 is here in its open, unassembled configuration, but the first section 60 and the second section 62 are brought together and the first end 61 of the first section 60 and the second end of the second section 62 are opposite each other.

[0104] The first section 60 is provided with a first heel 65 and, at its first end 61, with a first securing member 66 formed by a protuberance 67 provided projecting from the first heel 65.

[0105] The second section 62 is provided with a second heel 68 and, at its second end 63, with a second securing member 69 formed of a cavity 70 arranged in the second heel 68.

[0106] The cavity 70 of the second securing member 69 comprises a first side wall 71 and a second side wall 72 opposite the first side wall 71.

[0107] The first side wall 71 and the second side wall 72 of the cavity 70 here each have a first serrated surface 73.

[0108] The protrusion 67 of the first securing member 66 comprises a first side wall 74 and a second side wall 75 opposite the first side wall 74.

[0109] The first side wall 74 and the second side wall 75 of the protuberance 67 here each have a second serrated surface 76 complementary to the first serrated surface 73 of the cavity 70.

[0110] Furthermore, the first securing member 66 is provided with a tab 80, while the second securing member 69 is provided with a snap-in notch 81.

[0111] The tongue 80 extends longitudinally beyond the first end 61 of the first section 60.

[0112] The tab 80 here extends the first section 60 so as to extend longitudinally beyond the protuberance 67.

[0113] The snap-in notch 81 of the second securing member 69 is arranged longitudinally in the second heel 68.

[0114] Furthermore, the second securing member 69 is provided with a sealing wall 85, while the first securing member 66 has a receiving housing 86.

[0115] The sealing wall 85 of the second securing member 69 is arranged longitudinally and projecting from the second heel 68.

[0116] The sealing wall 85 is housed in the cavity 70 of the second securing member 69.

[0117] In particular, in the example illustrated, the sealing wall 85 here divides the cavity 70 into a first part 87 and a second part 88, with the first part 87 of the cavity 70 comprising the first side wall 71 and the second part 88 of the cavity 70 comprising the second side wall 72.

[0118] In other words, the first and second parts 87 and 88 of the cavity 70 are separated from each other by the sealing wall 85.

[0119] Furthermore, in the example illustrated, the sealing wall 85 extends longitudinally beyond the cavity 70 of the second securing member 69, in particular here on the snap-fastening notch 81, and has an end portion 89 which projects beyond the second end 63 of the second section 62.

[0120] The receiving housing 86 of the first securing member 66 is provided longitudinally in the first heel 65 and in the protuberance 67.

[0121] In particular, in the example illustrated, the receiving housing 86 here symmetrically divides the protuberance 67 of the first securing member 66 into a first part 90 and a second part 91, with the first part 90 of the protuberance 67 comprising the first side wall 74 and the second part 91 of the protuberance 67 comprising the second side wall 75.

[0122] In other words, the first and second parts 90 and 91 of the protrusion 67 are separated from each other by the receiving housing 86.

[0123] Furthermore, in the example illustrated, the receiving housing 86 extends into the first heel 65 beyond the protuberance 67, in particular here into the tongue 80, and has a complementary recess 92 formed in the first heel 65.

[0124] [Fig. 8] shows the transition from the unassembled open configuration of the dynamic sealing member 30 to its assembled closed configuration, and Figures 9 and 10 show the dynamic sealing member 30 in its assembled closed configuration.

[0125] The cavity 70 of the second securing member 69 is configured to at least partially receive the protrusion 67 of the first securing member 66 in the assembled closed configuration of the dynamic sealing member 30.

[0126] In other words, the protuberance 67 of the first securing member 66 is configured to be housed at least partially in a sealed manner in the cavity 70 of the second securing member 69.

[0127] The first and second serrated surfaces 73 and 76 are configured to cooperate by form fit in the assembled closed configuration of the dynamic sealing member 30.

[0128] Furthermore, the first and second serrated surfaces 73 and 76, which are complementary, are configured to create a progressive pressurization space provided with a plurality of baffles, making it possible in particular to ensure a sealed coupling of the first section 60 with the second section 62, in the assembled closed configuration of the dynamic sealing member 30.

[0129] In particular, the first and second portions of the protrusion 67 of the first securing member 66 are configured to be housed at least partially in the respective first and second portions of the cavity 70 of the second securing member 69 in the assembled closed configuration of the dynamic sealing member 30.

[0130] The tab 80 of the first securing member 66 and the snap-in notch 81 of the second securing member 69 are configured to cooperate by snap-in in the assembled closed configuration of the dynamic sealing member 30.

[0131] The receiving housing 86 of the first securing member 66 is configured to receive the sealing wall 85 in the assembled closed configuration of the dynamic sealing member 30.

[0132] The complementary recess 92 of the first securing member 86 is here configured to receive the end portion 89 which projects from the sealing wall 85 of the second securing member 69 in the assembled closed configuration of the dynamic sealing member 30.

[0133] In [Fig.8], the first end 61 of the first section 60 is located here partially opposite the second end 63 of the second section 62 and is superimposed on the latter; and the first section 60 here partially overlaps the second section 62.

[0134] The protuberance 67 of the first securing member 66 is here partially housed in the cavity 70 of the second securing member 69, with the first and second surfaces 73 and 76 which cooperate by complementarity of shape.

[0135] In particular, the sealing wall 85 of the second securing member 69 is located here opposite the receiving housing 86 of the first securing member 66, with its end portion 89 introduced here partially into the complementary recess 92; and the tongue 80 of the first securing member 66 is located here opposite and at a distance from the snap-fastening notch 81 of the second securing member 69.

[0136] In [Fig.9], the dynamic sealing member 30 is in its assembled closed configuration, with the first end 61 and the second end 63 facing each other and with the first section 60 and the second section 62 completely overlapping and in contact.

[0137] In particular, the tab 80 of the first securing member 66 is snap-fastened into the snap-fastening notch 81 of the second securing member 69, so that the tab 80 and the snap-fastening notch 81 form a lock for assembling the first section 60 with the second section 62.

[0138] With reference to [Fig. 10], the protrusion 67 of the first securing member 66 is entirely housed in a sealed manner in the cavity 70 of the second securing member 69; the first and second parts 90 and 91 of the protrusion 67 of the first securing member 66 are entirely housed in a sealed manner in the respective first and second parts 87 and 88 of the cavity 70 of the second securing member 69; and the sealing wall 85 of the second securing member 69 is entirely housed in the receiving housing 86 of the first securing member 66, with the end portion 89 which is entirely housed in the complementary recess 92.

[0139] In particular, the first and second complementary serrated surfaces here create a progressive pressurization space provided with a plurality of baffles which ensures a watertight coupling of the first section 60 with the second section 62.

[0140] In other words, the progressive pressurization space here defines a gradual pressure build-up path in the assembled closed configuration of the dynamic sealing member 30.

[0141] Thus, the dynamic sealing member 30 has been moved from its unassembled open configuration to its assembled closed configuration by abutting, overlapping and mechanically assembling the first and second sections 60 and 62 at the first and second ends 61 and 63.

[0142] Such a mechanical assembly allows the dynamic sealing member 30, once in its assembled closed configuration, to ensure both adequate transmission of mechanical forces and good sealing between the first and second sections 60 and 62.

[0143] Such a mechanical assembly is furthermore particularly simple and convenient.

[0144] In an alternative embodiment, an adhesive may be applied to the first and second ends, for example before the mechanical assembly of the first and second sections, so as to at least partially bond the first and second ends during this mechanical assembly.

[0145] In another alternative embodiment, the first and second ends may be heated, for example after mechanical assembly of the first and second sections, so as to at least partially fuse the assembled first and second ends.

[0146] [Fig. 11] illustrates an alternative embodiment of the dynamic sealing member, here in its closed configuration, which differs from the example illustrated in FIGS. 4 to 9 in that the dynamic sealing member 30' comprises a plurality of distinct segments.

[0147] In particular, the dynamic sealing member 30' here comprises a first segment 31 and a second segment 32 distinct from the first segment 31.

[0148] The first segment 31 and the second segment 32 are each provided with a first section 60 and a second section 62.

[0149] The first section 60 of the first segment 31 is configured to cooperate with the second section 62 of the second segment 32, while the first section 60 of the second segment 32 is configured to cooperate with the second section 62 of the first segment 31; in a manner similar to what has been explained above with reference to FIGS. 8 to 10.

[0150] The first section 60 of each of the first and second segments 31 and 32 comprises a first securing member, and the second section 62 of each of the first and second segments 31 and 32 comprises a second member securing, with the first and second securing members being similar to the first and second securing members of the dynamic sealing member 30 described with reference to Figures 4 to 10.

[0151] Thus, the dynamic sealing member 30' is modular, and allows, if necessary, the replacement of only one module formed by one or more segments, rather than a dynamic sealing member as a whole.

[0152] Other variations not illustrated are described below.

[0153] The rotating joint device can be configured to equip an electrical and / or signal type energy exploitation installation.

[0154] The dynamic sealing member may be formed from a plurality of distinct segments, for example three, four, five, etc.

[0155] The first sealing member may be formed from at least one protrusion and / or at least one cavity, and the second sealing member may be formed from at least one cavity and / or at least one protrusion.

[0156] The first sealing member may be provided with several tabs and / or at least one snap-in notch, and the second sealing member may be provided with several snap-in notches and / or at least one tab.

[0157] More generally, the invention finds an application in ships or floating units in the offshore field allowing production and / or transformation and / or treatment and / or storage and / or unloading of fluidic and / or electrical energy and / or signals.

[0158] The invention is therefore not limited to the examples described and shown.

Claims

Claims

1. Dynamic sealing member (30, 30') configured to equip a rotating joint device (10) of an energy exploitation installation (1), of the fluidic and / or electrical type, in particular located on an offshore platform, the dynamic sealing member (30, 30') admitting an unassembled open configuration and an assembled closed configuration in which the dynamic sealing member (30, 30') has a generally annular shape and is configured to be housed in the rotating joint device (10), characterized in that the dynamic sealing member (30, 30') comprises at least a first section (60) provided with a first heel (65) and, at a first end (61), a first securing member (66) formed of at least one protuberance (67) provided projecting from the first heel (65), the dynamic sealing member (30, 30') further comprises at least one second section (62) provided with a second heel (68) and,at a second end (63), of a second securing member (69) formed of at least one cavity (70) formed in the second heel (68), and the dynamic sealing member (30, 30') is configured so that in its assembled closed configuration where the first end (61) and the second end (63) are opposite each other, the at least one first section (60) and the at least one second section (62) overlap at least partially, with the at least one protuberance (67) of the first securing member (66) which is at least partially housed in a sealed manner in the at least one cavity (70) of the second securing member (69).,

2. Dynamic sealing member (30, 30') according to claim 1, characterized in that the second securing member (69) is further provided with at least one sealing wall (85) arranged longitudinally and projecting from the second heel (68), and the first securing member (66) has at least one first receiving housing (86) arranged longitudinally in the first heel (65) and being configured to receive the at least one sealing wall (85) in the assembled closed configuration of the dynamic sealing member (30, 30').

3. Dynamic sealing member (30, 30') according to claim 2, characterized in that the at least one sealing wall (85) is housed in the at least one cavity (70) of the second securing member (69) and the at least one first receiving housing (86) is provided in the at least one protrusion (67) of the first securing member (66).

4. Dynamic sealing member (30, 30') according to claim 3, characterized in that the at least one sealing wall (85) extends longitudinally beyond the at least one cavity (70) and the at least one first receiving housing (86) extends in the first heel (65) beyond the at least one protuberance (67) of the first securing member (66).

5. Dynamic sealing member (30, 30') according to one of claims 3 and 4, characterized in that the at least one sealing wall (85) projects beyond the second end (63) and the receiving housing (86) has a complementary recess (92) formed in the first heel (65).

6. Dynamic sealing member (30, 30') according to any one of claims 1 to 5, characterized in that the at least one cavity (70) of the second securing member (69) comprises at least one side wall (71, 72) which has a first serrated or textured surface (73), and the at least one protrusion (67) of the first securing member (66) comprises at least one side wall (74, 75) which has a second serrated or textured surface (76) complementary to the first serrated or textured surface (73).

7. A dynamic sealing member (30, 30') according to any one of claims 1 to 6, characterized in that the first securing member (66) is provided with a tongue (80) extending longitudinally beyond the first end (61), and the second securing member (69) is provided with a snap-in notch (81) provided longitudinally in the second heel (68), with the tongue (80) and the snap-in notch (81) being configured to cooperate by snap-in in the assembled closed configuration of the dynamic sealing member (30, 30').

8. Dynamic sealing member (30') according to any one of claims 1 to 7, characterized in that it comprises a plurality of separate segments each provided with a first section (60) and a second section (62), with the first section (60) of a first segment (31) which is configured to cooperate with the second section (62) of a second segment (32), and the first section (60) of the second segment (32) which is configured to cooperate with the second section (62) of the first segment (31) or with the second section of a third segment.

9. Rotary joint device (10) configured to equip an energy exploitation installation (1), of the fluidic and / or electrical type, in particular located on an offshore platform, comprising a first annular part (11) secured to a fixed mooring turret (4) of the installation (1), a second annular part (12) movable in rotation about an axis (X) and relative to the first annular part (11) and secured to a ship (3) movable by the installation (1), characterized in that the rotary joint device (10) comprises at least one dynamic sealing member (30, 30') according to any one of claims 1 to 8, housed inside a spacing space (22) located between the first annular part (11) and the second annular part (12).

10. Energy exploitation installation (1), of the fluidic and / or electrical type, in particular located on an offshore platform, comprising a rotating joint device (10) according to claim 9.

11. A method of assembling at least one dynamic sealing member (30, 30') according to any one of claims 1 to 8, comprising the steps of arranging the first end (61) and the second end (63) facing each other, of at least partially overlapping the at least one first section (60) and the at least one second section (62), and of at least partially sealingly housing the at least one protuberance (67) of the first securing member (66) in the at least one cavity (70) of the second securing member (69); the dynamic sealing member (30, 30') thus passing from its unassembled open configuration to its assembled closed configuration by abutting, overlapping and mechanically assembling the first and second sections (60, 62) at the first and second ends (61, 63).

12. An assembly method according to claim 11, comprising a step of applying an adhesive to the first and second ends (61, 63) so as to at least partially bond the first and second ends (61, 63) in the closed configuration assembled by abutting the dynamic sealing member, and / or a step of heating the first and second ends (61, 63) so as to at least partially fuse the first and second ends (61, 63) in the closed configuration assembled by abutting the dynamic sealing member. the dynamic sealing organ.

Images