Low-stress mooring device suitable for floating ocean energy device
A mooring device, low-stress technology, applied in mooring equipment, transportation and packaging, floating buildings, etc., can solve the design difficulties of the mooring system of floating ocean energy devices, reduce the pulling force of mooring cables, and the gripping force of anchors Minor problems, to facilitate towing and installation, avoid fatigue damage, increase the effect of pretension
Active Publication Date: 2022-03-08
HARBIN ENG UNIV
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Problems solved by technology
The terrain near the islands and reefs in the South China Sea is complex and changeable, and the water depth is shallow, which brings great difficulties to the design of the mooring system of floating ocean energy devices
[0004] Aiming at the problems existing in the existing mooring devices, Wu Si et al. proposed a two-point "chain + heavy block" mooring system: it has the advantages of the two-point underwater buoy mooring system, and its good elastic characteristics can slow down mooring The movement of the object, thus reducing the pulling force of the mooring line, and at the same time, it can solve the problem that the two-point underwater buoy mooring system brings a large uplift force to the anchor point and the anchor grip force caused by soil factors is small
Method used
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Embodiment 1
[0030] The ocean energy device 1 , the buoy 2 , the caisson 3 and the anchor 5 are connected by cables 4 . During towing, due to injecting seawater into the buoy 2 equipped with the high-pressure air bag 14 when leaving the factory, the buoy 2 can sink into the water and be suspended in the seawater, in a state of "zero buoyancy". The air chamber 7 in the caisson 3 is filled with gas, which will make the caisson float up and be suspended in the seawater, in a state of "zero buoyancy". Finally, the entire mooring device is in such a state during towing figure 1 In the state shown, the pretension of the cable is small, which is convenient for towing and connection with the floating wave energy device.
[0031] The buoy 2 comprises three parts of a water tank 13, a high-pressure air bag 14, and a hydraulic control valve 15. During the anchoring process, the buoy 2 controls the pressure in the water tank 13 through the high-pressure airbag 14 and the hydraulic control valve 15. ...
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The invention belongs to the technical field of floating type ocean energy equipment mooring, and particularly relates to a low-stress mooring device suitable for a floating type ocean energy device. On the basis of a traditional catenary mooring mode, the buoy and caisson system is introduced, a Z-shaped mooring device is formed, a certain amplitude variation range is provided for the steel cable, and fatigue damage caused by continuous tensioning of the steel cable is avoided. The caisson and buoy structure capable of carrying out gravity adjustment is adopted, the pretension of the steel cable during towing can be reduced, and towing and mounting are facilitated; according to the caisson structure, it can be ensured that the anchor can be completely grasped after installation, and the anchor is not prone to disengagement; the buoy structure can increase the pretension of the steel cable and reduce the peak load of the cable.
Description
technical field [0001] The invention belongs to the technical field of mooring of floating ocean energy equipment, and in particular relates to a low-stress mooring device suitable for floating ocean energy equipment. Background technique [0002] According to the "2020 World Energy Outlook" report released by the International Energy Agency, it is estimated that from 2020 to 2030, the demand for renewable energy power will increase by 2 / 3. And other advantages, has great application prospects. my country's South China Sea is rich in ocean energy resources, and the effective development and utilization of ocean energy can provide clean energy support for ocean engineering equipment, marine ranches, and island and reef construction. At the same time, the geographical location of the South China Sea is very important. The development and utilization of resources and islands and reefs in the South China Sea play an important role in safeguarding China's maritime rights and int...
Claims
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IPC IPC(8): B63B21/00B63B35/44
CPCB63B21/00B63B35/44B63B2035/4466B63B2021/003Y02E10/30B63B2021/206B63B21/50B63B21/20
Inventor 盛其虎耿敬李明伟赵玄烈张立东李扬赵国庆王莹薛方俊王一平
Owner HARBIN ENG UNIV