A safety device for emergency recovery of underwater towing body

Abstract

The invention relates to the technical field of underwater object recovery, in particular to a recovery device for an underwater drag body. A safety device for emergency recovery of an underwater towing body, which is installed in the diversion cover (5) of the underwater towing body, and includes: a fuze (1), a gas generator (3), a safety airbag (4) and a remote control Switch the upper computer (6); the fuze (1) is used to supply power to the gas generator (3), and the gas generator (3) generates gas to inflate the safety airbag (4), and the safety airbag (4) drags the underwater towing body out The water surface; the fuze (1) is provided with two trigger modes: the first is triggered by water pressure, and the second is triggered according to the instruction of the remote control switch upper computer (6). The invention drags the underwater towing body out of the water surface when the towing cable breaks or the fixed depth exceeds the limit, so as to facilitate salvage and recovery.

Description

technical field [0001] The invention relates to the technical field of underwater object recovery, in particular to a recovery device for an underwater drag body. Background technique [0002] In the underwater towing system, in order to make the underwater towing body reach a certain depth, it is often necessary to design the underwater towing body to have negative buoyancy, and at the same time, it is necessary to release a relatively long towing cable. When the underwater towing system breaks the towing cable due to towing foreign objects such as fishing nets, serious consequences of underwater towing body loss will occur. At the same time, when the tugboat breaks down and stops and the tow cable is not recovered in time, the fixed depth of the underwater tow body will exceed the set value or even hang to the bottom, resulting in serious consequences such as damage to the underwater tow body or difficulty in recovery. [0003] At present, the main means of underwater obj...

AI Technical Summary

Problems solved by technology

Divers are only suitable for relatively shallow waters (generally no more than 40m), and cannot work for a long time. They also have disadvantages such as limited by sea conditions, difficult search, and low efficiency.

ROV and UUV have large depth of operation and good safety, but they are also affected by the sea conditions of the operation, and they also have disadvantages such as complex system, high cost, inconvenient operation and low efficiency.

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