阅读说明：本技术 一种多振子液压流致振动发电装置及方法 (Multi-vibrator hydraulic flow-induced vibration power generation device and method ) 是由 燕翔 练继建 刘昉 冉聃颉 杨旭 冯卫鹏 于 2021-02-03 设计创作，主要内容包括：本发明公开一种多振子液压流致振动发电装置及方法,发电装置包括发电振子、液压缸、作动杆、单向阀、供油管路、出油管路、蓄能器、油量控制阀、液压发电机和回油油箱；所述发电振子根据流场环境与发电场区要求设置有若干个,每个发电振子与相应的作动杆连接,每个作动杆接入液压缸；液压缸通过油路连接单向阀；作动杆、液压缸和单向阀均与发电振子的数量一致；所述单向阀的上游连接供油管路,单向阀的下游连接出油管路；经出油管路汇总后连接蓄能器；所述蓄能器的出口端依次与油量控制阀、液压发电机和回油油箱；回油油箱的出口端与供油管路连接。(The invention discloses a multi-vibrator hydraulic flow-induced vibration power generation device and a method, wherein the power generation device comprises a power generation vibrator, a hydraulic cylinder, an actuating rod, a one-way valve, an oil supply pipeline, an oil outlet pipeline, an energy accumulator, an oil quantity control valve, a hydraulic power generator and an oil return oil tank; the power generation vibrators are arranged in a plurality according to the requirements of a flow field environment and a power generation field area, each power generation vibrator is connected with a corresponding actuating rod, and each actuating rod is connected into a hydraulic cylinder; the hydraulic cylinder is connected with the one-way valve through an oil way; the number of the actuating rods, the hydraulic cylinders and the one-way valves is consistent with that of the generating vibrators; the upstream of the one-way valve is connected with an oil supply pipeline, and the downstream of the one-way valve is connected with an oil outlet pipeline; the oil outlet pipeline is gathered and then connected with an energy accumulator; the outlet end of the energy accumulator is sequentially connected with an oil mass control valve, a hydraulic generator and an oil return tank; the outlet end of the oil return tank is connected with an oil supply pipeline.)

1. A multi-vibrator hydraulic flow-induced vibration power generation device is characterized by comprising a power generation vibrator (1), a hydraulic cylinder (2), an actuating rod (3), a one-way valve (4), an oil supply pipeline (5), an oil outlet pipeline (6), an energy accumulator (7), an oil quantity control valve (8), a hydraulic power generator (9) and an oil return tank (10); the generator vibrators are arranged according to the requirements of a flow field environment and a power generation field area, each generator vibrator is connected with a corresponding actuating rod (3), and each actuating rod (3) is connected into a hydraulic cylinder (2); the hydraulic cylinder (2) is connected with the one-way valve (4) through an oil way; the number of the actuating rods (3), the hydraulic cylinders (2) and the one-way valves (4) is the same as that of the generating vibrators (1); the upstream of the one-way valve (4) is connected with an oil supply pipeline (5), and the downstream of the one-way valve (4) is connected with an oil outlet pipeline (6); the oil is collected by the oil outlet pipeline (6) and then is connected with an energy accumulator (7); the outlet end of the energy accumulator (7) is connected with an oil quantity control valve (8), a hydraulic generator (9) and an oil return tank (10) in sequence; the outlet end of the oil return tank (10) is connected with an oil supply pipeline; each power generation vibrator (1) vibrates up and down due to wake flow when impacted by ocean current; the actuating rod (3) is driven to move up and down by the vibration of the power generation vibrator (1); the actuating rod (3) moves to drive the hydraulic cylinder (2) to suck low-pressure hydraulic oil to the oil supply pipeline (5) through the one-way valve (4) and extrude the high-pressure hydraulic oil to the oil outlet pipeline (6) through the one-way valve (4); hydraulic oil is conveyed to downstream after being gathered, and energy is stored and balanced through an energy accumulator (7); the balanced hydraulic oil is used for conveying a high-pressure oil body to a hydraulic generator (9) through an oil quantity control valve (8) and generating electricity; after power generation, the low-pressure oil body is conveyed to an oil return tank (10) for circulating filtration; the filtered low-pressure oil body is supplied to the power generation vibrator (1) at low pressure through an oil supply pipeline (5); finally, hydraulic oil circuit circulation for power generation is formed.

2. A control method of a multi-vibrator hydraulic flow-induced vibration power generation device is characterized by comprising the following steps:

(1) the sea current drives the power generation vibrator to vibrate and drives the hydraulic cylinder to extrude high-pressure oil;

(2) controlling the oil quantity control valve to adjust the pressure of the high-pressure oil quantity, and balancing the pressure through the energy accumulator;

(3) and controlling the hydraulic motor to regulate the generated output.

Technical Field

The application relates to the fields of hydromechanics, hydraulic machinery and control and new energy power generation, in particular to a power generation device for converting multi-vibrator flow induced vibration into hydraulic drive and a control method thereof.

Background

With the continuous and deep research on ocean engineering and flow-induced vibration, a novel flow-induced vibration ocean current power generation concept gradually becomes a new subject cross focus of attention. The flow-induced vibration is vibration caused by periodic changes such as wake flow and vortex after fluid bypasses a flow-blocking blunt body (such as a cylinder, a prism and the like). The utilization of the vibration energy has the advantages of low starting flow speed, high energy density and the like.

At present, the research on the flow-induced vibration power generation is actively carried out, and the research contents are mostly focused on the following aspects: (1) how to change the section of the vibrator to increase the vibration intensity of the single vibrator and deeply dig the power generation potential of the single vibrator; (2) how to arrange a plurality of vibrators to maximize the vibration of the plurality of vibrators in the field area and search for the optimal vibrator layout; (3) how to select the generator and how to perform motion conversion leads to the highest generating efficiency and the lowest cost. Through targeted research, flow-induced vibration power generation has been developed in recent years, but the problem that several necks of cards still exist from the practical application of the flow-induced vibration power generation is not solved. One important problem is how to most economically ensure the power generation quality of the whole field vibration on the premise of the prior art for free vibration multiple vibrators. When a plurality of vibrators are distributed and arranged in a field area and free vibration power generation is carried out, the wake flow condition of each vibrator is complex, and the motion of each vibrator has larger difference in time and space. In the prior art, each vibrator is independently connected with a motor to generate electricity, and the quality of the generated electricity of each vibrator completely depends on the vibration condition of the vibrator. If a vibrator is damped due to the influence of a certain uncertain wake flow on vibration at a certain moment, the energy of the vibrator cannot be effectively utilized. This uncertainty will likely occur on every element throughout the field, thereby severely impacting the overall field quality of power generation.

Therefore, an effective multi-vibrator combined power generation device and a control method are needed to be provided, on the premise that the technology is feasible, economical and reasonable, the redundancy of the whole field of multi-vibrator free vibration power generation is improved, and the whole field power generation quality is guaranteed.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a multi-vibrator hydraulic flow-induced vibration power generation device and a method.

The purpose of the invention is realized by the following technical scheme:

a multi-vibrator hydraulic flow-induced vibration power generation device comprises a power generation vibrator, a hydraulic cylinder, an actuating rod, a one-way valve, an oil supply pipeline, an oil outlet pipeline, an energy accumulator, an oil quantity control valve, a hydraulic power generator and an oil return tank; the power generation vibrators are arranged in a plurality according to the requirements of a flow field environment and a power generation field area, each power generation vibrator is connected with a corresponding actuating rod, and each actuating rod is connected into a hydraulic cylinder; the hydraulic cylinder is connected with the one-way valve through an oil way; the number of the actuating rods, the hydraulic cylinders and the one-way valves is consistent with that of the generating vibrators; the upstream of the one-way valve is connected with an oil supply pipeline, and the downstream of the one-way valve is connected with an oil outlet pipeline; the oil outlet pipeline is gathered and then connected with an energy accumulator; the outlet end of the energy accumulator is sequentially connected with an oil mass control valve, a hydraulic generator and an oil return tank; the outlet end of the oil return tank is connected with an oil supply pipeline; each power generation vibrator vibrates up and down due to wake flow when impacted by ocean current; the action rod is driven to move up and down through the vibration of the power generation vibrator; the actuating rod moves to drive the hydraulic cylinder to suck low-pressure hydraulic oil into the oil supply pipeline through the one-way valve and extrude high-pressure hydraulic oil into the oil outlet pipeline through the one-way valve; hydraulic oil is conveyed to downstream after being gathered, and energy storage and balance are carried out through an energy accumulator; the balanced hydraulic oil is used for conveying a high-pressure oil body to the hydraulic generator through the oil quantity control valve and generating electricity; after power generation, the low-pressure oil body is conveyed to an oil return oil tank for circulating filtration; the filtered low-pressure oil body supplies oil to the power generation vibrator at low pressure through the oil supply pipeline; finally, hydraulic oil circuit circulation for power generation is formed.

The invention also provides a control method of the multi-vibrator hydraulic flow-induced vibration power generation device, which comprises the following steps:

(1) the sea current drives the power generation vibrator to vibrate and drives the hydraulic cylinder to extrude high-pressure oil;

(2) controlling the oil quantity control valve to adjust the pressure of the high-pressure oil quantity, and balancing the pressure through the energy accumulator;

(3) and controlling the hydraulic motor to regulate the generated output.

Compared with the prior art, the technical scheme of the invention has the following beneficial effects:

the invention adopts multi-vibrator combination and combines a hydraulic means to carry out power generation and control, can realize the high-efficiency and stable utilization of energy under the condition of multi-vibrator distribution power generation in a field area, and has obvious beneficial effects. Firstly, by adopting multiple vibrators, ocean current energy of each part in the field area can be extracted, and the sufficiency of the field area energy utilization is ensured. Secondly, by adopting a hydraulic control mode, the energy of each vibrator which generates electricity independently can be collected to an energy accumulator in a unified mode, and the oil quantity is accurately controlled through an oil quantity control valve, so that the overall distribution of the energy of all vibrators is realized, and the utilization efficiency is greatly improved; meanwhile, the hydraulic control mode can effectively ensure that the pressure of the high-pressure oil output end is stable and controllable, and the safety of the equipment in the running power generation process is effectively ensured. And thirdly, the hydraulic generator is adopted for generating electricity, the equipment technology is mature, a single generator can correspond to a plurality of electricity generating vibrators on the whole field or in part, each vibrator does not need to be configured with a generator, the whole hydraulic pipeline can be laid on the seabed instead of a circuit, and the durability is high. The device combines the front-edge flow-induced vibration power generation with the traditional hydraulic power generation mode, is easy to realize, and has good application prospect.

Drawings

FIG. 1 is a schematic view of the structure of the power generation apparatus of the present invention;

reference numerals: 1-a power generation vibrator; 2-a hydraulic cylinder; 3-actuating rod; 4-a one-way valve; 5-oil supply line; 6-an oil outlet pipeline; 7-an accumulator; 8-oil control valve; 9-a hydraulic motor; 10-oil outlet tank.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

A multi-vibrator hydraulic flow-induced vibration power generation device is composed of a power generation vibrator 1, a hydraulic cylinder 2, an actuating rod 3, a one-way valve 4, an oil supply pipeline 5, an oil outlet pipeline 6, an energy accumulator 7, an oil quantity control valve 8, a hydraulic power generator 9 and an oil return tank 10. In the embodiment, the number of the power generation vibrators 1 is 12; each generating vibrator 1 is connected with an actuating rod 3, and the number of the generating vibrators 1 is consistent with that of the generating vibrators 1; the actuating rod 3 is connected into the hydraulic cylinders 2, hydraulic oil is filled in the hydraulic cylinders 2, and the number of the hydraulic cylinders 2 is consistent with that of the generating vibrators 1; the hydraulic cylinder 2 is connected with one-way valves 4 through oil passages, and the number of the one-way valves 4 is consistent with that of the generating vibrators 1; the upstream of the one-way valve 4 is connected with an oil supply pipeline 5, and the downstream is connected with an oil outlet pipeline 6; the downstream of the oil outlet pipeline 6 is connected with an energy accumulator 7 after being gathered; the number of the energy accumulators 7 is designed according to specific energy requirements; the downstream of the accumulator 7 is connected with an oil quantity control valve 8; the downstream of the oil quantity control valve 8 is connected with a hydraulic generator 9; the downstream of the hydraulic generator 9 is connected with an oil return tank 10; and an oil supply pipeline is arranged at the downstream of the oil return tank 10. The action rod 3 is driven to move up and down through the vibration of the generating vibrator 1; the actuating rod moves to drive the hydraulic cylinder 2 to suck low-pressure hydraulic oil into the oil supply pipeline through the one-way valve and extrude the high-pressure hydraulic oil into the oil outlet pipeline 6 through the one-way valve 4; hydraulic oil is conveyed to downstream after being gathered, and energy is stored and balanced through an energy accumulator 7; the balanced hydraulic oil is used for conveying a high-pressure oil body to the hydraulic generator through the oil quantity control valve 8 and generating electricity; after power generation, the low-pressure oil body is conveyed to the oil return tank 10 for circulating filtration; the filtered low-pressure oil body is supplied to the power generation vibrator through an oil supply pipeline 5 in a low-pressure mode; finally, hydraulic oil circuit circulation for power generation is formed.

In this example: the characteristic width of the power generation vibrator is 10cm, and the width is 1 m; the rated power of a single power generation vibrator is 20W, and the rated power of the whole field is 240W; the flow velocity of the ocean current is 0.5-1.5 m/s.

The present invention is not limited to the above-described embodiments. The foregoing description of the specific embodiments is intended to describe and illustrate the technical solutions of the present invention, and the above specific embodiments are merely illustrative and not restrictive. Those skilled in the art can make many changes and modifications to the invention without departing from the spirit and scope of the invention as defined in the appended claims.