Emergency unmooring device for deep sea underwater towing platform

Abstract

The invention provides an emergency unmooring device for a deep sea underwater towing platform, which takes the deep sea water pressure as a power source to realize emergency instant cable unmooring (or cable breaking), is simple in structure and reliable in work, and can be widely applied to the field of ocean deep diving towing type detection equipment. The device is mainly composed of a towing cable end watertight socket, a head movable plug, a barrel, a hollow piston rod, a pull pin, a towing cable end electric plug, a plug, an equipment end electric plug, a semicircular supporting ring, a rubber gasket, a tail fixed end cover and an equipment end watertight socket.

Description

technical field [0001] The invention belongs to the technical field of deep sea underwater emergency untwisting devices, in particular to an emergency untwisting device for deep sea underwater towed platform equipment (such as deep sea towed bodies, deep sea ROVs, etc.) without a special power source. The pressure can be used as a power source to realize instant release of the cable (or break the cable) in an emergency. The structure is simple and the work is reliable, and it can be widely used in the field of marine deep-diving towed detection equipment. Background technique [0002] With the development of marine equipment moving towards the deep sea, large-depth underwater towed systems or deep-sea ROVs have been widely used as a deep-sea detection platform, such as deep-sea target search, deep-sea geological survey, deep-sea ecological environment survey, etc. Generally speaking, for large-scale towed detection equipment, due to the needs of underwater power supply or re...

AI Technical Summary

Problems solved by technology

[0004] 1. It is more effective to use the deep-sea hydraulic shearing device to cut the cable, and it can be cut back and forth multiple times through control to ensure that the towline is cut and separated. However, the hydraulic system of the deep-sea hydraulic shearing device is often complicated, and a special set is required. The hydraulic power source has a large weight and volume, and the risk of system reliability will increase, and the cable cutting action needs to be transmitted by the mother ship through the tow cable, which is very unfavorable for the light, small and reliable design of underwater detection equipment;

[0005] 2. The method of cutting cables with deep-sea electric shearing devices also has the same problems as hydraulic shearing devices, and the tow cables are generally armored cables with a larger diameter. According to the characteristics of electric drive, compared with hydraulic shearing devices, the shearing is the same The volume and weight of the electric drive cable cutting device for thick and thin armored cables will be larger;

[0006] 3. Use the acoustic release device on the underwater equipment to release the load-bearing head of the towline, and then use the positive buoyancy of the underwater equipment to pull the watertight mating joint of the towing cable apart to realize the underwater untwisting action. The watertight mating joint is selected for this untwisting method The connection should not be too tight. At the same time, the underwater equipment needs to reserve a large positive buoyancy, otherwise the unmooring pull force is small and it is difficult to untie the cable. In addition, the pull force of the watertight joint is greatly affected by the buoyancy center of the equipment and the pull direction. The untwisting method of the positive buoyancy of the equipment is less reliable

Images