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Wave energy absorbing device based on hydraulic transmission dual-stroke work application

An energy absorption device and hydraulic transmission technology, which is applied to fluid pressure actuating devices, engine components, machines/engines, etc., can solve the problems of intermittent power generation, poor power generation quality, and short work time, and achieve energy output. The effect of stable transmission, high energy conversion efficiency and improved power generation quality

Inactive Publication Date: 2011-09-21
ZHEJIANG UNIV
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Problems solved by technology

Taking the patent WO03036081A1 as an example, a buoyant pendulum type single-stroke wave energy absorbing device is disclosed. Single-stroke work, that is to say, only 1 / 4 cycle of the device is used to absorb wave energy to do work in each entire wave cycle, so the device can work for a short time, the first-level conversion efficiency of the system is low, and when generating electricity Intermittent, poor power quality

Method used

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  • Wave energy absorbing device based on hydraulic transmission dual-stroke work application
  • Wave energy absorbing device based on hydraulic transmission dual-stroke work application

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Embodiment Construction

[0011] As shown in the drawings, the present invention connects the buoyant pendulum 1 to the piston rods 6, 7 of the two hydraulic cylinders 2, 3 respectively, and the rodless chambers of the two hydraulic cylinders 2, 3 are connected to the respective control integrated valves 34, 35. The high-pressure end is connected, the rod chambers of the two hydraulic cylinders 2 and 3 are connected to the low-pressure ends of the respective control integrated valves 34 and 35, and one end of the two control integrated valves 34 and 35 is connected to the main circuit accumulator through the high-pressure oil pipe 36 20 and one end of the variable motor 22, the first stop valve 31 is installed at the entrance of the high pressure accumulator 20, the main shaft of the variable motor 22 is directly connected with the main shaft of the permanent magnet synchronous generator 23; the other of the two control integrated valves 34, 35 One end is connected to the auxiliary circuit accumulator 2...

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Abstract

The invention discloses a wave energy absorbing device based on hydraulic transmission dual-stroke work application. A buoyancy pendulum is connected with a hydraulic cylinder, high-pressure oil output by a rodless cavity of the hydraulic cylinder is connected into the oil inlets of a main loop accumulator and a variable displacement motor through high-pressure oil pipes by a control integrated valve, low-pressure oil output by an oil outlet of the variable displacement motor is connected into an auxiliary loop accumulator through a low-pressure oil pipe and reflows to a rod cavity of the hydraulic cylinder through the control integrated valve, the main shaft of an auxiliary loop hydraulic pump is connected with an auxiliary loop asynchronous motor, an oil inlet of the auxiliary loop hydraulic pump is connected with an oil box, the oil outlet is connected with the low-pressure oil pipe and an overflow valve through a one-way valve, and a PLC controller is electrically connected with apressure sensor and the auxiliary loop asynchronous motor. The wave energy absorbing device based on hydraulic transmission dual-stroke work application can improve the work application time of wave energy absorption by one time and has higher primary energy conversion efficiency, more steady energy transfer and smaller shock effect by waves, and the power generation quality is greatly improved.

Description

technical field [0001] The invention belongs to wave energy utilization technology, in particular to a wave energy absorbing device based on hydraulic transmission double-stroke work. Background technique [0002] In the current ocean wave energy utilization devices, whether it is a suspension pendulum type, a buoyancy pendulum type, or other wave utilization forms such as a point absorption type, most of them use a single hydraulic cylinder to do work in a single stroke to realize the conversion of wave energy. Taking the patent WO03036081A1 as an example, a buoyant pendulum type single-stroke wave energy absorbing device is disclosed. Single-stroke work, that is to say, only 1 / 4 cycle of the device is used to absorb wave energy to do work in each entire wave cycle, so the device can work for a short time, the first-level conversion efficiency of the system is low, and when generating electricity Intermittent, the quality of power generation is poor. Contents of the inve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03B17/02F15B1/02F15B7/10F15B11/028F15B13/06
CPCY02E10/20
Inventor 张大海李伟林勇刚鲍经纬
Owner ZHEJIANG UNIV
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