Hydraulic energy storage power generation type anchoring system for wave energy power generation device

Abstract

The invention discloses a hydraulic energy storage power generation type anchoring system for a wave energy power generation device. The hydraulic energy storage power generation type anchoring systemcomprises an anchor, an anchor chain, an anchor gear, a chain stopper, a mooring rope, a hydraulic cylinder, an energy accumulator, an oil tank and a hydraulic power generation system, wherein the anchor gear and the chain stopper are installed at the top end of the wave energy power generation device, one end of the anchor chain is connected with the anchor, and the other end is installed on theanchor gear and connected with a cable; the hydraulic cylinder, the energy accumulator, the oil tank and the hydraulic power generation system are installed in a bottom cabin of the wave power generation device, the other end of the cable is connected with a piston rod of the hydraulic cylinder, one path of a rod cavity of the hydraulic cylinder is connected to the energy accumulator through a one-way valve, the other path is connected with the oil tank through a one-way valve, and a rodless cavity of the hydraulic cylinder directly communicates with air in the bottom cabin. According to thehydraulic energy storage power generation type anchoring system, safe and reliable operation of the wave energy power generation device under severe sea conditions or typhoon conditions can be achieved, and the anchoring system is simple in structure, low in cost, easy and convenient to throw and easy to operate.

Description

technical field [0001] The invention relates to the field of offshore platform mooring technology and the field of wave energy power generation, in particular to a hydraulic energy storage power generation mooring system for a wave energy power generation device. Background technique [0002] Wave energy generation devices usually exist in the ocean in the form of semi-submersible floats. Unlike ordinary marine floating platforms, marine floating platforms place the main working platform above the wave surface, and the underwater riser design also avoids waves shock. The design concept of the wave energy device is to face the waves, and this feature causes the wave impact it receives in the waves to be far greater than that of ships and offshore platforms. For offshore structures with the same displacement and tonnage, the wave drag force of wave energy devices in extreme sea conditions with large waves is much greater than that of ships and offshore platforms, resulting in...

AI Technical Summary

Problems solved by technology

For the catenary mooring system, under severe sea conditions such as typhoons, the low-frequency drift force of the wave increases, and the catenary will gradually be stretched and tend to be straightened and taut. At this time, once the wave energy device continues to retreat with the waves, The catenary anchor chain is easily broken, or the anchor

There are three traditional methods to solve this problem. The first is to increase the strength of the mooring system, mainly to increase the strength of the anchor chain, increase the chain diameter of the anchor chain, improve the structure of the anchor and increase the weight of the anchor to resist harsh sea conditions. The first method can improve the safety of the mooring system to a certain extent, but increases the cost of the mooring system; the second method is to add sinkers and buoys on the basis of the catenary mooring system, thereby improving the buffer absorption of the entire mooring system. However, it increases the difficulty of launching the mooring system; the third type is the superelastic energy storage mooring system, and the superelastic mooring rope is composed of materials with super elastic deformation ability and strong tensile force , the system acts on device drift through elastic deformation buffering and accumulating wave drag force. This kind of mooring system is more reliable than the previous two, but the cost is relatively high, and it is more difficult to deploy

Images