Underwater oil-filled through sealing method and device for umbilical cables

Abstract

The invention discloses an underwater oil-filled through sealing method and device for umbilical cables and belongs to the technical field of undersea robots. The underwater oil-filled through sealing device comprises an inner protection layer, an outer protection layer, heat-shrinkage protection material, a substrate and a flexible bushing, wherein a hoop is arranged outside the flexible bushing, a lead is located in the inner protection layer, and compensation oil is filled in a cavity composed of the end of the inner protection layer and the substrate. Both the substrate and flexible bushing are hollow, and an anti-loosening step is arranged at the joint between the substrate and the flexible bushing to clamp the substrate with the flexible bushing. The underwater oil-filled through sealing method and device for umbilical cables realize underwater oil-filled through sealing and enable the balance between the pressure inside the umbilical cable and the pressure outside the umbilical cable to be guaranteed; the underwater oil-filled through sealing device is resistant to high pressure, suitable for the whole sea and simple in structure, and meanwhile, the oil-filled through sealing device does not need a connecting plug and realizes to quickly and easily seal with equipment or apparatus under the condition that the existing cable is not provided with a plug.

Description

technical field [0001] The invention relates to a device in the technical field of submarine robots, in particular to an oil-filled penetration sealing method and device for an underwater umbilical cable. Background technique [0002] The umbilical cable is the only way to provide the power and signal of the submersible. How to carry out safe and reliable energy and information transmission is a key issue in the design and manufacture of submersibles. If it is not handled properly, insulation drop or even short circuit will occur, seriously affecting the safety of the submersible. At present, umbilical cable manufacturers at home and abroad have come up with various methods and devices to achieve sealing, some of which use connectors to seal, and some use socket-integrated through joints to achieve sealing. [0003] However, all these methods have one or another deficiency and defect. The plug-in method requires sealing between the socket and the equipment instrument and be...

AI Technical Summary

Problems solved by technology

However, the sealing structure of this technology is mainly composed of a rubber vulcanized casting head and two sections of cables. For large-diameter umbilical cables, the rubber vulcanization casting head has a complicated manufacturing process. At the same time, the balance of internal and external pressure of the umbilical cable cannot be guaranteed, and there is a certain water depth limit.

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