Abstract: The present invention relates to a flexible tubular pipe for carrying fluids under pressure containing H2S and to a method for designing such a flexible pipe. The pipe includes a body (7), an internal sealing sheath (8), at least one steel armouring layer (9,10) withstanding the stresses induced by the inside/outside pressure difference, and at least one traction-resisting steel armouring layer (11, 12) spirally wound at an angle less than 45° in relation to the axis of the pipe. In this pipe, at least the armouring layer withstanding the stresses induced by the inside/outside pressure difference is made of a determined steel meeting H2S resistance criteria, and at least the traction-resisting armouring layer is made from steel wires that do not meet H2S resistance criteria.

Abstract: The invention concerns a method for the continuous production of a flexible tube body from two stapled wires (9, 10) individually bent in bending means (7, 8), three stitches, unsupported by a mandrel, and such that wires (9, 10) remain constantly in contact so as to optimize their resistance to external pressure. Bending means (7, 8) can be arranged with respect to each other without affecting the bending adjustment. The method consists in stapling the two spirals by elastically deforming the turns so that one crosses the other to cause the wires to overlap partially. The invention also concerns an equipment for producing a flexible tube body.

Abstract: The invention concerns a method for manufacturing steel wire comprising the following steps: manufacturing a reinforcing wire of sizeable length by rolling or hot wire drawing from steel containing the following elements: 0.18% to 0.45 % C, 0.4% to 1.8% Mn, 1% to 4% Cr, 0.1% to 0.6% Si, 0% to 1.5% Mo, 0% to 1.5% Ni, at most 0.01% S and 0.02% P, the reinforcing wire having, after being rolled or hot drawn, a temperature at least higher than the AC3 temperature, preferably by 50 to 200° C. and in particular by 100 to 150° C.; winding the wire in reels before air cooling the raw manufacturing wire to obtain a HRC hardness not less than 40 and preferably higher than 45. In a variant, the method consists in quenching and tempering so that the wire has a hardness between 20 HRC and 35 HRC. The invention also concerns a reinforcing wire and a flexible tube for carrying effluents.

Abstract: The present invention relates to a reinforced flexible tube having at least one elongated reinforcing element. According to the invention, this elongated element has a cross section or profile in the form of a T and is wound helically.

Abstract: A flexible tubular hose, in particular for transporting fluids under pressure, comprising pressure-resistant armoring constituted by winding at least one pair of interlockable metal section wires, one of which has a T-section and the other of which has a U-section, the ribs of the T-section wire being directed toward the outside of the flexible tubular hose and the ribs of the U-section wire being directed toward the axis of the flexible tubular hose.

Abstract: A reinforced flexible tube having at least one helically wound elongated reinforcing element. The elongated reinforcing element has a T-shaped cross-sectional profile.

Abstract: A method for making steel wires, wherein an elongate shaped wire is produced by rolling or drawing steel consisting of 0.05-0.5% C, 0.4-1.5% Mn, 0-2.5% Cr, 0.1-0.6% Si, 0-1% Mo, no more than 0.25% Ni, and no more than 0.02% S and P, and a first heat treatment is performed on the shaped wire, including at least one step of quenching under predetermined conditions to achieve an HRC hardness of at least 32, a predominately martensitic and bainitic steel structure and a small amount of ferrite. A shaped wire and a flexible tube for conveying an H.sub.2 S-containing effluent are disclosed.

Abstract: A flexible tubular pipe is provided having, from the inside outward, an inner sealing sleeve or tube, and an armoring including multiple armoring webs. The armoring is made up of a first armoring web on which the inner sealing sleeve or tube rests, the first armoring web including multiple interlocked wires wound with an angle A1 less than 80.degree. in relation to an axis of the flexible tubular pipe, and a set of armoring webs placed on the outside of the first armoring web, and in which at least one of the wires of the set of armoring webs is not interlocked, and is arranged so that all of the winding angles of the wires of the set of armoring webs are complementary to the angle A1, thereby obtaining a balanced flexible tubular pipe.

Abstract: The invention has mainly as its object a metal tubular tube (1) comprising hollow compartments (7), and a flexible tubular conduit comprising at least one such tube. The tube according to the invention is characterized by the fact that it comprises at least one hollow channel (7) formed by walls belonging to a strip and spirally wound around an axis (6) of tube (1). The invention applies mainly to the production of flexible tubular conduits for transporting hydrocarbons.

Abstract: A flexible tubular pipe incorporating, from the inside outward, an inner sealing sleeve or tube, and an armoring comprising a plurality of armoring webs. The armoring includes a first armoring web on which the inner sealing sleeve or tube rests. The first armoring web includes a plurality of interlocked wires wound with an angle, (A1) that is less than 80.degree. in relation to the axis of the flexible tubular pipe. The armoring also includes a set of armoring webs placed on the outside of the first armoring web, each having at least one armoring web and non-interlocking wires. The winding angle of the wires is complementary to the angle (A1), so that a balanced flexible tubular pipe is created.

Abstract: A rotary hydraulic device of the displacement pump type having coaxial rotor and stator and vanes axially slidable in the rotor, the stator comprising at least one bottom surface formed with a variable number of deformations having rectilinear zones suitable for the operation on the recesses by the vanes. The recesses are made in movable elements of the stator such that the depth of the recesses can be made variable thus providing a device of variable capacity. The device is applicable to brakes and dampeners, as well as to engines and pumps.

Abstract: A hydraulic motor comprises vanes slidable axially in lodgings of a rotor against a continuous stator bottom surface. The motor works with a hydrostatic transmission of power applied to rolling stock. The bottom surface has recesses formed therein on movable elements of stator wherein a constant pilot pressure is fed to said movable elements and the motor is a self regulated variable capacity motor since the capacity thereof results from the depth of the recesses due to the opposition of two forces, one from the pilot pressure and the other from a pressure coming from the resisting torque.

Abstract: The invention relates to a rotary electrohydraulic device of the volumetrical pump type having stator and rotor as well as vanes axially slidable in said rotor. According to the invention, the intermediary space between the rotor and the stator has an axial longitudinal circulary variable interval partly defined by a continuous stator bottom surface of a constant width, said slidable vanes coming to bear constantly and totally on said continuous bottom surface, which is single for a considered set of said vanes. The device according to the invention is mainly applicable as a brake or slackening means but can also work as a motor and a pump.

Abstract: An electrohydraulic rotary brake comprises an inner core, at least one energizing winding, a cylindrical amagnetic insert and an annular part outside the core and the insert. A cylindrical bore is excentric with respect to the cylindrical peripheral surface of the insert, recesses being provided with magnetizable sliding vanes and a brake fluid. On a rotary shaft, are mounted lateral flanges in fluid-tight manner, the inner core being fast to the rotary shaft and to the insert, all three being arranged so as to constitute a rotor for the brake. The annular part outside the core and the insert constitutes an annular stator to which the lateral flanges are fixed and with the bore excentric with respect to the peripheral surface of the insert constituting the outer part of the rotor.

Abstract: The drive uses a recessed wall or partition between the pole-rings of the two rotors to substantially diminish the occurrence and strength of eddy currents. The recesses may be in the form of grooves, depressions or axial bores which reduce the mass of the wall. The wall is further reinforced by non-magnetic electrically non-conductive or insulated elements of high tensile strength to compensate for the reduction in strength caused by the grooves, depressions or bores.