초록 ▼

A system for controlled lowering of an elongated body such as a tube or cable, from a relatively high level, especially the water level to a relatively low level, especially the (sea) bottom. The system includes an elongated tubular guide that is connected to one or more buoyancy bodies. The system

A system for controlled lowering of an elongated body such as a tube or cable, from a relatively high level, especially the water level to a relatively low level, especially the (sea) bottom. The system includes an elongated tubular guide that is connected to one or more buoyancy bodies. The system also includes a braking device for braking the movement of the elongated body through the tubular guide. The braking device includes a number of braking units incorporated in the tubular guide and distributed over the length thereof. The braking units are under control of a central control unit which controls the braking force applied by each braking unit.

대표청구항 ▼

1. A system for controlled lowering of an elongated body into a volume of water, from a relatively high level, to a relatively low level, comprising an elongated tubular guide which is connected to one or more buoyancy bodies, and braking means for braking the movement of said elongated body through

1. A system for controlled lowering of an elongated body into a volume of water, from a relatively high level, to a relatively low level, comprising an elongated tubular guide which is connected to one or more buoyancy bodies, and braking means for braking the movement of said elongated body through said tubular guide, said braking means incorporating at least one braking unit comprising:a flexible annular inflatable body having an outwardly directed wall supported by said tubular guide and an inwardly directed wall that acts as a braking surface, and a valve unit for inflating or deflating the inflatable body, whereby the valve unit is connected to a source of pressurized fluid and is controlled by a control unit, wherein, the fluid inside each inflatable body has a specific weight substantially equal to the specific weight of the volume of water.