摘要:
A drive arm for a wiper blade has a rear end portion configured to be fixed to a drive shaft of the arm in an alternating sweep movement about a roughly vertical axis, a free front end portion operable to carry the wiper blade, an intermediate portion of longitudinal principal orientation that is elastically deformable in a vertical longitudinal plane and that connects the rear portion to the front portion, and a stiffener for stiffening the intermediate portion flexurally in a horizontal plane. The stiffener has at least one first flexible longitudinal element that is fixed along a first longitudinal lateral face of the intermediate portion so that, when a transverse force is applied to the intermediate portion in a first direction, a longitudinal stress is exerted on the first reinforcing element.
摘要:
A flexible tubular pipe comprising a metal carcass helically coiled about a longitudinal axis of said flexible pipe and the carcass comprises a seamed profiled hollow tube.
摘要:
An underwater storage installation for a cryogenic liquid. A foundation base rests directly on the sea floor. An underwater cell for storing the cryogenics liquid and cryogenic liquid-supply and -discharge conduits. The storage cell comprises a sealed outer chamber and a vapor barrier disposed inside the outer chamber and which defines a watertight space. A separation space is disposed between the outer chamber and the vapor barrier. Spacers are disposed in the space to keep the chamber and the vapor barrier at a distance from one another. The installation can be used for the storage of liquefied natural gas.
摘要:
A device for laying pipes from a laying vessel. The pipes convey a fluid within. The device comprises a lower retaining device to retain a pipe and a lower securing device to support the lower retaining device. An upper retaining device retains the pipe and is able to move translationally with respect to the lower retaining device. Both retaining devices retain the pipe from the inside. An upper securing device to which the lower retaining device can be coupled through a pipe section to be connected in order to release the lower securing device and in order to secure thereto the said upper retaining device after the then lower pipe section has been connected and submerged.
摘要:
The invention concerns a liquefied gas transfer installation, in particular for liquefied natural gas, adapted to transfer liquefied gas between two surface tanks and distally spaced apart. The installation comprises a transfer line. The transfer line is immersed in water. The invention is applicable to installations for loading ships with natural gas.
摘要:
It is of the type comprising at least two reinforcing armour plies (3-6) wound in opposite senses about a longitudinal axis (A—A) and at least one pressure sheath (7), which can collapse in a given direction under the action of external pressure greater than the internal pressure in the said collapsible pipe, the collapse being able to cause a transverse elongation of the said pressure sheath, and it is characterized in that at least one stiffener (8, 9) is provided on at least one surface (7a) of the said pressure sheath, which is made of a thermoplastic, so as, during collapse, to limit the said elongation to a value of less than the elongation threshold of the said thermoplastic. Application especially to the transporting of hydrocarbons in offshore operations.
摘要:
A method for laying a pipeline formed of joined rigid and flexible tubular conduits on an underwater surface, particularly an ocean bed, by using a floating support. The method includes the steps of: loading onto the floating support a length of flexible tubular conduit; laying from the support a length of rigid tubular conduit; connecting the ends of the two conduits together; lowering the conduits; and halting the lowering when the rigid conduit hits bottom, while the other end of the flexible conduit is still in the floating support.