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Hydraulically-driven wave energy power generation device

A power generation device, wave energy technology, applied in the direction of fluid pressure actuation device, ocean energy power generation, engine components, etc., to achieve the effect of stable output pressure

Active Publication Date: 2017-01-11
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems of the existing wave energy power generation device, the present invention provides a hydraulic system that can avoid large-scale pressure fluctuations in the hydraulic system, stabilize the hydraulic energy output by the hydraulic cylinder, have high energy transfer efficiency, and improve the efficiency of wave energy power generation. Drive wave energy generator

Method used

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  • Hydraulically-driven wave energy power generation device

Examples

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Embodiment 1

[0032] refer to figure 1 : A hydraulically driven wave energy generating device, including a primary energy harvesting mechanism, a variable displacement numerical control hydraulic cylinder connected behind the primary energy harvesting mechanism, a hydraulic transmission system driven by a variable displacement numerical control hydraulic cylinder, and a hydraulic transmission system connected behind the hydraulic transmission system dynamo.

[0033] refer to Figure 2-Figure 5 : the variable-displacement numerical control hydraulic cylinder includes a cylindrical cylinder body 1, a cylinder head 2 fixed on the upper end of the cylinder body 1 by bolts, and the cylinder body 1 is punched multiple times through the same stamping process to form six windings. The centerline of the cylinder body 1 is a sub-hydraulic cylinder 3 arranged in a circle and a central hole 4 opened at the centerline of the cylinder body 1, and the central axes of the adjacent sub-hydraulic cylinders ...

Embodiment 2

[0052] The difference between this embodiment and Embodiment 1 is that there are four groups of sub-hydraulic cylinders of the variable-displacement numerical control hydraulic cylinder, and each group has two sub-hydraulic cylinders, and the central axes of adjacent sub-hydraulic cylinders are equally spaced along the circumferential direction Set at 45 degrees, the area ratio of the four sub-hydraulic cylinders is S1:S2:S3:S4=1:2:4:8.

[0053] There are four groups of three-way switching valves corresponding to the four groups of sub-hydraulic cylinders, that is, eight. The outer wall of the cylinder of the variable-displacement numerical control hydraulic cylinder is also fixedly installed with two switching valve installation blocks, which are connected with the four sub-hydraulic cylinders. The four two-position three-way high-speed switch valves connected to the rod cavity of the hydraulic cylinder are installed on one switch valve installation block, and the four two-pos...

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Abstract

The invention discloses a hydraulically-driven wave energy power generation device. The hydraulically-driven wave energy power generation device comprises a primary energy capture mechanism, a variable-displacement computer-numerical-control hydraulic cylinder connected behind the primary energy capture mechanism, a hydraulic transmission system driven by the variable-displacement computer-numerical-control hydraulic cylinder, and a power generator connected behind the hydraulic transmission system, wherein the areas of N groups of hydraulic sub-cylinders of the variable-displacement computer-numerical-control hydraulic cylinder are different from each other and the area ratio S1: S2: S3: ... : SN is equal to 1: 2: 4: ... : 2<N-1>; a first input end and a second input end of the hydraulic transmission system are connected with a rectifying valve group composed of four check valves; a positive hydraulic output end of the rectifying valve group is connected with a high-pressure energy accumulator and then is connected with a hydraulic input end of a hydraulic motor; a hydraulic output end of the hydraulic motor is connected with a low-pressure energy accumulator and then is connected with a negative hydraulic backflow end of the rectifying valve group; and the hydraulic motor unidirectionally rotates under the action of hydraulic oil, so as to drive the power generator to generate power. The hydraulically-driven wave energy power generation device has the following advantages: hydraulic energy output by the hydraulic cylinder is stable, energy transfer efficiency is high, and wave energy power generation efficiency can be increased.

Description

technical field [0001] The invention relates to the field of wave energy power generation, in particular to a hydraulically driven wave energy power generation device. Background technique [0002] Waves are waves caused by wind, and wave energy is the kinetic and potential energy of waves on the surface of the ocean. As the highest grade and most widely distributed ocean energy source, wave energy has received increasing attention in its power generation technology. The hydraulic cylinder is connected behind the primary energy harvesting mechanism in the wave energy power generation system, and is used to convert the wave energy captured by the primary energy harvesting mechanism into hydraulic energy. [0003] The traditional wave energy generation device changes the utilization efficiency of wave energy by changing the specific structure of the primary energy harvesting mechanism, but this method has inevitable defects. Wave energy is a very unstable energy, and its for...

Claims

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Application Information

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IPC IPC(8): F03B13/14F15B15/14F15B15/20
CPCF03B13/14F15B15/1409F15B15/1428F15B15/204Y02E10/30
Inventor 林勇刚李阳健江俊燊刘宏伟李伟
Owner ZHEJIANG UNIV
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