摘要:
A device for fabricating structures of large dimensions, layer by layer.The invention relates to a device making use of positioning an extrusion head in three dimensions by means of cables in order to deposit a pasty material continuously in thin layers, e.g. a mortar comprising either a hydraulic binder or thermoplastic compounds or thermosetting compounds or curable compounds.The invention is for making industrial elements of very large dimensions, and more particularly for making buildings.
摘要:
A modular storage and holder device for a plurality of flexible lines having a circular turntable arranged on a plane such as the deck of a ship and having reversibly attached thereto a central cylinder around which at least a first line is wound in carousel mode with a plurality of coaxial layers of helically superposed touching turns, internal posts serving as a winding support for at least one second flexible line itself retained by a series of second intermediate posts around which it is possible to wind at least one third flexible line, itself retained by peripheral retaining posts at the periphery of the turntable, the second and third lines being wound in rotary basket type mode having superposed pluralities of layers of juxtaposed concentric touching turns resting on a common plane.
摘要:
A method of making steel undersea pipes designed to convey corrosive fluids including water, the method including acting in a workshop on land to assemble together respective ends of at least two unitary pipe elements with carbon-steel first welds to form pipe strings, the first welds being protected by first linings, and acting at sea from a laying ship to assemble together respective ends of the strings by use of anti-corrosion second welds of stainless steel or of anti-corrosion alloy to form a pipe. Each of the ends of the strings are provided with an anti-corrosion cladding which extends over the inside surface made of carbon steel of each end unitary pipe element over a first length of at least 4 times the thickness of the wall of the pipe.
摘要:
The present invention relates to a reinforced undersea unit pipe element (1) suitable for being laid empty at great depth. The element includes a tubular wall, having at least one external peripheral reinforcing element (6, 7) creating a plurality of localized zones on the outside surface of the wall, the radial distance (d1) between the outside surface of the pipe and the longitudinal axis (XX′) of the wall in the zones being greater than the outside radius (R) of the tubular wall portions lying between the successive zones in the longitudinal direction (XX′), two successive ones of the zones being spaced apart in the longitudinal direction (XX′) of the tubular wall by a distance (D) equal to ½ to 4 times the outside diameter (d) of the tubular wall portions, the successive zones preferably being spaced apart regularly.
摘要:
A method of using a buoyancy fluid presenting density that is less than that of sea water, and that is confined in a rigid or flexible leaktight casing, so as to constitute an immersed buoyancy element, wherein the buoyancy fluid is a compound that is naturally in the gaseous state at ambient atmospheric temperature and pressure, and in the liquid state at the underwater depth to which the buoyancy element is immersed. The present invention also relates to a method of putting a buoyancy element into place between the surface and the bed of the sea, wherein the fluid is stored in a tank on a surface ship as a liquid in the cooled or compressed liquid state, and it is injected in the liquid state into a pipe from the surface where it is stored to an said immersed casing at an underwater depth at which the underwater pressure is not greater than the vapor pressure of the gas corresponding to the compound at the temperature at the depth.
摘要:
An apparatus for holding and guiding a floating riser relative to a floating support. The apparatus includes a guidance mechanism secured to the floating support for enabling the riser to rotate about a horizontal axis perpendicular to a longitudinal axis of the riser; and for enabling the riser to slide longitudinally along the longitudinal axis and lateral displacement of the riser to be guided in a horizontal plane perpendicular to the longitudinal axis of the riser. The guidance mechanism includes friction pads mounted on a pad support for enabling the pads to pivot. The pads preferably cooperate with wheels such that the wheels bear against the riser and enable it to slide, and the riser comes to bear against the pads only when the wheels are moved away under the effect of lateral displacements of the riser.
摘要:
The present invention relates to a device for the heat insulation of at least one underwater pipe (1) intended to be laid on the sea bed at great depth, comprising an insulating coating surrounding the latter and a protective envelope (3), characterized in that said insulating coating comprises a virtually incompressible liquid/solid phase change material (4) with a melting temperature T0 higher than that T2 of the medium surrounding the pipe in operation and less than that T1 of the effluents circulating in the pipe, and said material (4) preferably being impregnated in an absorbent matrix (2) surrounding the pipe (1), preferably nearest its outer surface, which protective envelope (3) is resistant and deformable and ensures a containment against and about said insulating coating.
摘要:
The present invention relates to a bottom-to-surface link system for an underwater pipe installed at great depth, the system comprising: firstly a vertical tower constituted by at least one float (5, 14) associated with an anchor system (6, 8, 16) and carrying at least one vertical riser (9, 15) suitable for going down to the sea bed (18); and secondly at least one link pipe (4, 3) extending from said float (5, 14) to a surface support (1). According to the invention, said link pipe is a riser whose wall is constituted by a rigid steel tube, and said float (5, 14) is installed at a depth situated below the last thermocline (29).
摘要:
A ship for laying flexible undersea lines at sea, the ship having a deck including a cavity receiving said turntable and a motor-driven device for rotating the turntable and fastened to the carrier structure of the hull of the ship, also known as the “hull girder”. The top face of the circular turntable does not project significantly above the plane of the deck that is juxtaposed therewith. The turntable presents attachment elements for attaching a modular storage and handling device for storing and handling flexible lines by winding and unwinding the flexible lines.
摘要:
A ship for laying flexible undersea lines at sea, the ship having a deck including a cavity receiving said turntable and a motor-driven device for rotating the turntable and fastened to the carrier structure of the hull of the ship, also known as the “hull girder”. The top face of the circular turntable does not project significantly above the plane of the deck that is juxtaposed therewith. The turntable presents attachment elements for attaching a modular storage and handling device for storing and handling flexible lines by winding and unwinding the flexible lines.