Inspection system of remote operated vehicle on submarine cable and operation method of inspection system

Abstract

The invention discloses an inspection system of a remote operated vehicle on a submarine cable and an operation method of the inspection system, and relates to the field of submarine cable inspection.A current underwater vehicle cannot be compatible with working reliability and inspection effect. The inspection system comprises an underwater vehicle and a working boat, wherein the working boat isconnected with the underwater vehicle by an umbilical cable, and the underwater vehicle comprises a remote operated vehicle (ROV) body, a floating body, a thruster, a lighting and shooting device, amechanical arm, an underwater positioning device and bottom legs. With the adoption of the ROV, a propeller of the boat and a side thruster continuously run all the way, and the umbilical cable of theROV is prevented from being twisted into the propeller; power is directly supplied to the ROV by the working boat, inspection information acquired by the ROV is transferred to the working boat by theumbilical cable, and the inspection system is reliable to work and is prevented from being lost; and meanwhile, instrument such as the mechanical arm can be carried by the ROV, the inspection qualityis effectively improved, and the instrument can be used for determining with regard to an uncertain condition.

Description

technical field [0001] The invention relates to the field of inspection of submarine cables, in particular to a system for inspection of submarine cables by a cable remote-controlled underwater robot and an operation method thereof. Background technique [0002] The underwater situation in domestic coastal areas is complex. The underwater geological conditions of the Bohai Sea, the Yellow Sea, the East China Sea and the South China Sea are very different. The submarine cables that have been laid are based on the actual situation of the project. The underwater laying location and laying environment are different. Due to the limitation of underwater engineering equipment in the early years, the submarine cables laid in the early days were almost all laid on the seabed in the open way, without corresponding protection measures, and were extremely vulnerable to damage from the natural environment and human activities. [0003] Submarine power cables need regular maintenance afte...

AI Technical Summary

Problems solved by technology

The biggest difference between them is that the ROV is connected to the surface mother ship through an umbilical cable to achieve energy supply and fast signal transmission, so the operator can see the real-time underwater images or other detection data captured by the ROV through the monitor of the surface mother ship and control the robot. However, it is limited by the umbilical cable, usually has a limited operating range and poor navigation flexibility, and is easily affected by marine vessel activities, and may also cause damage or loss of the robot due to cable entanglement and breakage

AUV can be separated from the support of the surface mother ship, and has the advantages of energy independence, flexible maneuverability, and strong concealment. However, it is connected to the host computer through wireless. Once the communication module is damaged or interfered, it may be lost and has poor reliability. In addition, AUV is powered by batteries, the power supply is limited, the underwater time is limited, and it is also unable to carry heavy equipment such as mechanical arms, which affects the inspection effect of submarine cables

The current underwater robots cannot take into account the reliability of the work and the inspection effect

Images