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Spiral auxiliary cable positioning and shaping ore mixed transportation hose system

A hose and spiral technology, which is applied in the field of ore mixed transportation hose system with spiral auxiliary cable positioning and shaping, can solve the problems of affecting the service life of flexible risers, the bending stiffness of flexible hoses is small, and affecting the flow of ore slurry in risers. Achieve the effects of increasing reliability and operability, facilitating offshore installation, and improving service life

Pending Publication Date: 2020-02-18
CHINA MERCHANTS MARINE & OFFSHORE RES INST CO LTD
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] However, the bending stiffness of the flexible hose is relatively small, which easily leads to large deformation and dynamic response of the flexible riser under the excitation of dynamic load in the marine environment, which affects the flow of the slurry in the riser and affects the service life of the flexible riser

Method used

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  • Spiral auxiliary cable positioning and shaping ore mixed transportation hose system
  • Spiral auxiliary cable positioning and shaping ore mixed transportation hose system

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Embodiment Construction

[0013] Such as Figure 1-2 As shown, the ore mixed transportation hose system with spiral auxiliary cable positioning and shaping includes ore transportation hose 2, mooring cable 3, mooring cable tensioning system, and fixing device 8 for ore transportation hose 2 and mooring cable 3 . The fixing device 8 is a guide groove, a guide pipe or a fixing ring. The mooring line 3 is fixed on the outer surface of the ore transport hose 2 in the form of spiral winding through the fixing device 8, which is convenient for installation at sea. The ore transport hose 2 and the mooring line 3 can move relatively. When the tension of the mooring line 3 is adjusted by the tensioner 7, the length of the mooring line 3 in the water changes accordingly, and relatively moves along the outer surface of the ore transport hose 2 to change the shape of the ore transport hose 2 in water. As the tension of the mooring line 3 changes, the axial stiffness of the mooring line 3 also changes. When the ...

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Abstract

The invention discloses a spiral auxiliary cable positioning and shaping ore mixed transportation hose system which comprises an ore transportation hose, a mooring cable, a mooring cable tensioning system and a fixing device for the transportation hose and the mooring cable. The mooring cable is fixed to the outer surface of the transportation hose in a spiral form, one end of the transportation hose is connected to a sea bottom ore lifting pump while the other end of the transportation hose is connected to a water surface mining vessel, the mooring cable tensioning system is composed of the mooring cable, an anchoring device and a tensioner, and one end of the mooring cable is connected and fixed to the sea bottom through the anchoring device while the other end of the mooring cable is connected to the tensioner of the mining vessel. Dynamic response of the transportation hose under action of waves can be inhibited by means of self weight of the mooring cable and the axial rigidity ofthe mooring cable, so that the ore transportation reliability and efficiency are improved, the fatigue loss of the transportation hose is reduced effectively and the service life of the transportation hose is prolonged. In the form of the transportation hose, designs of expensive heaving compensation devices, center shafts and the like on a water surface workboat / platform are avoided, so that thedevelopment cost is lowered to a great extent and the economical benefit is good.

Description

technical field [0001] The invention relates to an ore mixed transportation hose system suitable for ore transportation in deep sea mining, in particular to an ore mixed transportation hose system for spiral auxiliary cable positioning and shaping. Background technique [0002] There are abundant high-grade mineral resources in the deep sea. However, deep-sea mineral deposits are generally distributed in extremely deep waters, and the lifting system is a very important subsystem in the deep-sea mining system. The lifting system consists of a lifting pump and a transport riser, where the transport riser can use flexible hoses. Due to the low weight of the flexible hose and the low requirements for the movement of the ship, the flexible hose can adapt to the large local water depth in the mining area and reduce the equipment requirements for mining ships. [0003] However, the bending stiffness of the flexible hose is relatively small, which easily leads to large deformation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B21/04B63B21/50B63B27/24
CPCB63B21/04B63B21/50B63B27/24B63B2021/505
Inventor 徐立新张帆孙铭远祝传钰罗文臣刘建成
Owner CHINA MERCHANTS MARINE & OFFSHORE RES INST CO LTD
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