Hydraulic cylinder for wave power generation

Abstract

The invention belongs to the field of new energy utilization, and in particular relates to a hydraulic cylinder for wave power generation. The hydraulic cylinder for the wave power generation comprises a cylinder body (11), a cylinder cover (12), a piston (13), a main piston rod (131) and a plurality of pairs of hydraulic sub cylinders (20), wherein the hydraulic sub cylinders (20) are uniformly fixed on the inner wall of the bottom of the cylinder body (11) along the circumferential direction of a central line of the piston (13), each group of hydraulic sub cylinders (20) corresponds to one group of two-position three-way high-speed switch valves (30), and the working states of each group of two-position three-way high-speed switch valves (30) can determine corresponding each group of hydraulic sub cylinders (20) to be communicated with an oil tank or a hydraulic transmission system; and the number of groups of the hydraulic sub cylinders at the working state can be controlled by regulating the two-position three-way high-speed switch valve (30) corresponding to the hydraulic sub cylinders (20), thus a movement state of a primary energy catching mechanism and the working pressure of the hydraulic transmission system can be regulated and the energy capturing efficiency and the transmission efficiency can be improved.

Description

technical field [0001] The invention belongs to the field of new energy power generation, and in particular relates to a hydraulic cylinder used for wave energy power generation. Background technique [0002] Wave energy power generation technology is one of the hot technologies in the field of new energy. Wave energy power generation devices usually use hydraulic cylinders to convert the energy captured by the primary energy harvesting mechanism into hydraulic energy (such as attached figure 1 shown), and then transfer the energy to the generator for power generation through the hydraulic transmission system. [0003] The efficiency of a wave energy generating device is usually determined by its own structure. For example, the motion state of the primary energy harvesting mechanism has a great influence on the energy harvesting efficiency. The traditional method to improve the efficiency of wave energy generation devices is to optimize the design of the primary energy harv...

AI Technical Summary

Problems solved by technology

But there is such a problem in this pressure adjustment method, if the hydraulic transmission system has been working under a small working pressure, the accumulator will always be in a non-working state, and the working pressure of the hydraulic transmission system will always be a small value , the lower working pressure will make the transmission efficiency of the hydraulic transmission system very low

In addition, due to the limitation of the charging pressure and volume of the accumulator, there are certain limitations when using the accumulator to adjust the working pressure of the hydraulic transmission system

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