Abstract: The present invention is a pressure tank comprising a tubular part and two bottoms (5) with the bottoms (5) positioned at the ends of the tubular part. The tubular part comprises a cylindrical wall (1) and a ply of circumferential reinforcing elements (2) wound around cylindrical wall (1). The elastic modulus of the material of cylindrical wall (1) is less than the elastic modulus of the material of the first ply of circumferential reinforcing elements (2). The invention also relates to an energy storage and recovery system comprising a compressor, an expansion device, a heat storage and a compressed air tank according to the aforementioned characteristics.

Abstract: The invention is a reservoir for the storage of a pressurized fluid such as compressed air notably to the storage and recovery of energy using compressed air. In particular, the reservoir comprises at least one tube formed of an arrangement of concentric layers (C1, C2, C3, C4). This arrangement comprises, working from the inside toward the outside of the tube, an internal layer (C1) formed of concrete, a layer (C2) formed of steel of thickness E, at least one layer (C3) formed by a winding of steel wires (C3?) on a sublayer (C3?) of concrete, and an external layer (C4) which protects the wires against at least one of physical and chemical damage, and in which the wires are subjected to circumferential (hoop) tensile prestress with at least one of the thickness E and the prestress being rated to withstand the pressure of pressurized fluid.

Abstract: The invention relates to a heat storage and recovery system and process comprising at least one cylindrical external wall (51), at least one first volume (30), at least one second volume (31) and at least two fluid injection/withdrawal means. The first (30) and second (31) volumes are separated by at least one heat storage means (20) comprising at least one bed of heat storage particles. Furthermore, the storage means (20) and the first (30) and second (31) volumes extend substantially over the entire axial length of the cylindrical external wall (51). The longitudinal axis of the said cylindrical external wall (51) is horizontal. The invention also relates to a system and to a process for the storage and recovery of energy by compressed gas comprising such a heat storage means.

Abstract: The present invention is a pressure tank comprising a tubular part and two bottoms (5) with the bottoms (5) positioned at the ends of the tubular part. The tubular part comprises a cylindrical wall (1) and a ply of circumferential reinforcing elements (2) wound around cylindrical wall (1). The elastic modulus of the material of cylindrical wall (1) is less than the elastic modulus of the material of the first ply of circumferential reinforcing elements (2). The invention also relates to an energy storage and recovery system comprising a compressor, an expansion device, a heat storage and a compressed air tank according to the aforementioned characteristics.

Abstract: The present invention relates to a floating support structure (1) provided with a main floater (2) and with a heave plate (3). Heave plate (3) comprises a section varying with depth. Furthermore, heave plate (3) has a minimum horizontal section Sd1 greater than horizontal section Sc of main floater (2).

Abstract: The present invention relates to a floating support structure (1) provided with a main floater (2) and with a heave plate (3). Heave plate (3) comprises a section varying with depth. Furthermore, heave plate (3) has a minimum horizontal section Sd1 greater than horizontal section Sc of main floater (2).

Abstract: The invention is a reservoir for the storage of a pressurized fluid such as compressed air. In particular, the reservoir comprises at least one tube formed of an arrangement of concentric layers (C1, C2, C3, C4). This arrangement comprises, working from the inside toward the outside of the tube, an internal layer (C1) formed of concrete, a layer (C2) formed of steel of thickness E, at least one layer (C3) formed by a winding of steel wires (C3?) on a sublayer (C3?) of concrete, and an external layer (C4) which protects the wires against at least one of physical and chemical damage, and in which the wires are subjected to circumferential (hoop) tensile prestress with at least one of the thickness E and the prestress being rated to withstand the pressure of pressurized fluid. Application notably to the storage and recovery of energy using compressed air.

Abstract: The present invention relates to a connector comprising an external locking ring (11) allowing bayonet type connection on either side with two male (9) and female (8) connector elements, by means of studs having identical angular ranges. Furthermore, the connector comprises at least one removable pin (12) for translationally blocking locking ring (11), notably upon locking and unlocking.

Abstract: The present invention relates to an offshore wind turbine on a floating support structure (1) comprising in combination: a main floater (1) comprising a part of substantially cylindrical shape, a concrete circular element (2) having a diameter greater than the diameter of the main floater, providing a stationary mass at the base of the floater and a damper, supplementary permanent ballast (4) arranged at the base of the main floater, dynamic ballast boxes (3) included in the main floater and distributed ringwise on the periphery of the floater.

Abstract: The present invention relates to a floating mounting (1) which includes ballasting means (2) in order to vary the draught of the floating mounting. The floating mounting (1) according to the invention has a depth-variable horizontal cross-section, such that the second moment of area of the cross-section of the floating mounting, at the buoyancy surface (Sd), is higher when the floating mounting is deballasted, compared with the second moment of area of the buoyancy surface of the floating mounting, at the buoyancy surface (Sb), when the floating mounting is ballasted.

Abstract: The present invention relates to a connector comprising an external locking ring (11) allowing bayonet type connection on either side with two male (9) and female (8) connector elements, by means of studs having identical angular ranges. Furthermore, the connector comprises at least one removable pin (12) for translationally blocking locking ring (11), notably upon locking and unlocking.

Abstract: The present invention relates to a riser section (4) equipped with an inner locking ring (11). According to the invention, auxiliary line elements (7) are secured to one end of main tube (6) and they are mobile with respect to the other end of main tube (6) through the agency of a sliding pivot connection, whose relative translational motion is limited by a clearance adjustment means (15). The invention also relates to a riser consisting of several sections (4) and to the use of the riser for carrying out an offshore drilling operation.

Abstract: The present invention relates to a riser section (4) equipped with an external locking ring (11). Locking ring (11) cooperates with a male connector element (9) and a female connector element (8) by means of a series of studs. The invention also relates to a riser consisting of several sections (4) and to the use of the riser for carrying out an offshore drilling operation.

Abstract: The present invention relates to a floating mounting (1) which includes ballasting means (2) in order to vary the draught of the floating Lfb mounting. The floating mounting (1) according to the invention has a depth-variable horizontal cross-section, such that the second moment of area of the cross-section of the floating mounting, at the buoyancy surface (Sd), is higher when the floating mounting is deballasted, compared with the second moment of area of the buoyancy surface of the floating mounting, at the buoyancy surface (Sb), when the floating mounting is ballasted.

Abstract: The present invention is a connector (5) for a riser equipped with an external locking collar (11). Locking collar (11) cooperates with a male flange (24) of a male connector element (9) and a female flange (23) of a female connector element (8) by means of a series of tenons. The invention also relates to a riser including several sections (4) assembled by a connector (5).

Abstract: The present invention relates to a riser section (4) equipped with an inner locking ring (11). According to the invention, auxiliary line elements (7) are secured to one end of main tube (6) and they are mobile with respect to the other end of main tube (6) through the agency of a sliding pivot connection, whose relative translational motion is limited by a clearance adjustment means (15). The invention also relates to a riser consisting of several sections (4) and to the use of the riser for carrying out an offshore drilling operation.

Abstract: The present invention relates to a riser section (4) equipped with an external locking ring (11). Locking ring (11) cooperates with a male connector element (9) and a female connector element (8) by means of series of studs. The invention also relates to a riser consisting of several sections (4) and to the use of the riser for carrying out an offshore drilling operation.

Abstract: The present invention relates to an offshore wind turbine on a floating support structure (1) comprising in combination: a main floater (1) comprising a part of substantially cylindrical shape, a concrete circular element (2) having a diameter greater than the diameter of the main floater, providing a stationary mass at the base of the floater and a damper, supplementary permanent ballast (4) arranged at the base of the main floater, dynamic ballast boxes (3) included in the main floater and distributed ringwise on the periphery of the floater.

Abstract: The present invention is a connector (5) for a riser equipped with an external locking collar (11). Locking collar (11) cooperates with a male flange (24) of a male connector element (9) and a female flange (23) of a female connector element (8) by means of a series of tenons. The invention also relates to a riser consisting of several sections (4) assembled by a connector (5).