STRUCTURE OF UMBELICAL FOR CONNECTING A DIVER WITH A DIVING SUPPORT SHIP AND/OR A DIVING BELL

摘要

Structure of umbelical (1) arranged to connect a diver (100) with a support ship (200) and/or with a safety diving bell (250). The structure of umbelical comprises at least one duct (61) for feeding a breathable gaseous mixture to the diver, a duct (62) for removing a flow breathed out from the diver. Furthermore are provided an electric cable (63) supplying electric energy to the diver and a connection device (10) arranged to connect in a removable way a first portion (10a) of the umbelical that, in use, is arranged on the side of the diving bell and/or of the support ship, and a second portion (10b) of said umbelical that, in use, is arranged on the diver's side. The connection device (10) has at least one passage, or meatus, defined between a face of said first portion and a face of the second portion of the connection device and in which a first predetermined pressure P1 is present, with P1 less, or equal, to the atmospheric pressure. The structure of umbelical also comprises a source (70) of a gas at a second predetermined pressure P2 with P2>P1 and a valve (75) for pneumatically connecting, or disconnecting, the source of pressurized gas and the meatus.