CN214304155U

CN214304155U - Liquid metal fluid wave power generation device

Info

Publication number: CN214304155U
Application number: CN202120279327.2U
Authority: CN
Inventors: 李永国; 郑丁健
Original assignee: Shanghai Ocean University
Current assignee: Shanghai Ocean University
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2021-09-28
Anticipated expiration: 2031-02-01

Abstract

The utility model discloses a liquid metal fluid wave energy power generation device, which solves the defects of low conversion efficiency and low reliability of the existing wave energy conversion equipment method, and the key points of the technical proposal are that the wave energy power generation device comprises a cylinder body, a piston rod and a piston, a floater fixedly arranged at the upper end of the piston rod, and a heavy object fixedly connected at the lower end of the piston rod; a flow channel for the piston rod to push the piston to reciprocate and a pipeline channel which is communicated and connected with two ends of the flow channel to form a loop for liquid metal circulation are arranged in the cylinder body; the both sides of flow channel are located to the pipeline passageway branch, are provided with the magnetic current body electricity generation passageway in the pipeline passageway, and install the tesla valve along same hour hand direction forward in the pipeline passageway, the utility model discloses a liquid metal fluid wave energy power generation facility, compact structure, simple, the reliability is high, can convert the wave energy into the electric energy by the high efficiency.

Description

Liquid metal fluid wave power generation device

Technical Field

The utility model relates to a wave energy power generation facility, in particular to liquid metal fluid wave energy power generation facility.

Background

Wave energy is used as a strategic renewable energy source, the wave energy power generation technology is greatly concerned by countries in the world, and at present, the wave energy is converted into electric energy in various ways, but the problem of low conversion efficiency generally exists, the reliability is not high, and the cost is still high compared with other renewable energy sources.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a liquid metal fluid wave energy power generation facility, compact structure, simple, the reliability is high, can convert the wave energy into the electric energy by the high efficiency.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a liquid metal fluid wave power generation device comprises a cylinder body, a piston rod, a piston, a floater fixedly arranged at the upper end of the piston rod, and a weight fixedly connected to the lower end of the piston rod;

a flow channel for the piston rod to push the piston to reciprocate and a pipeline channel communicated and connected with two ends of the flow channel to form a loop for liquid metal circulation are arranged in the cylinder body; the pipeline channels are respectively arranged on two sides of the flow channel, a magnetofluid power generation channel is arranged in the pipeline channels, and Tesla valves are arranged in the pipeline channels in the forward direction along the same clockwise direction.

Preferably, the magnetofluid power generation channel comprises a magnetofluid channel and a magnet fixedly arranged on the outer side of the magnetofluid channel; the Tesla valve is provided with two Tesla valves which are respectively installed at two ends of the magnetic fluid channel in the forward direction.

Preferably, the cross-sectional area of the flow channel is greater than the cross-sectional area of the magnetic fluid channel.

Preferably, the diameter of the tesla valve is equal to the diameter of the pipeline channel.

Preferably, the tesla valve has a split angle of 10 degrees.

To sum up, the utility model discloses following beneficial effect has:

the floater is arranged at the upper end of the piston rod, the piston rod can be driven to reciprocate, so that liquid metal in the cylinder body can circulate between the pipeline channel and the flow channel, the magnetohydrodynamic power generation channel is arranged in the pipeline channel, channel power generation can be realized by matching with the liquid metal, one-way circulation is realized at two sides by arranging the Tesla valve on the pipeline channel, a local high-speed and strong-curvature flow field is caused at the magnetohydrodynamic power generation channel, the circulation rate of the liquid metal in the magnetohydrodynamic power generation channel can be improved, and the power density of power generation is improved.

Drawings

FIG. 1 is a schematic diagram of a power plant;

FIG. 2 is a schematic structural diagram of the magnetic fluid power generation channel in the pipeline channel.

In the figure: 11. a cylinder body; 12. a piston rod; 13. a piston; 14. a flow channel; 15. a conduit channel; 2. a magnetohydrodynamic power generation channel; 21. a magnetic fluid channel; 22. a magnet; 3. a Tesla valve; 4. a float; 5. a weight; 6. an anchor assembly.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

According to one or more embodiments, the wave energy power generation device with the liquid metal fluid comprises a cylinder 11, a piston rod 12 and a piston 13 which are vertically arranged in the cylinder 11 in a penetrating mode, a floater 4 arranged at the upper end of the piston rod 12, and a weight 5 fixedly arranged at the lower end of the piston rod 12, wherein the piston rod 12 and the piston 13 are arranged in the cylinder. The cylinder 11 is a circulation loop including a flow channel 14 and a pipeline channel 15. The pipeline channel 15 is provided with a magnetofluid power generation channel 2 and a Tesla valve 3.

The flow channel 14 is arranged in the center of the cylinder 11 along the vertical direction, so that the piston rod 12 drives the piston 13 to reciprocate, and further drives the liquid metal in the loop to circulate, and the pipeline channels 15 are respectively arranged on two sides of the flow channel 14 and are communicated and connected with the upper end and the lower end of the flow channel 14, so as to form a circulation loop. When the liquid metal flows through the magnetic fluid power generation channel 2, the flow direction is vertical to the direction of the external magnetic field, and electromotive force is generated on the electrodes at the two sides of the channel.

The magnetic fluid power generation channels 2 are respectively arranged in the pipeline channels 15 on the two sides, as shown in fig. 2, each magnetic fluid power generation channel 2 comprises a magnetic fluid channel 21 and a magnet 22 fixedly arranged on the outer side of the corresponding magnetic fluid channel 21, and the sectional area of each magnetic fluid channel 21 is smaller than that of the corresponding flow channel 14, so that when the piston rod 12 pushes the piston 13 to reciprocate, liquid metal can rapidly circulate in the corresponding magnetic fluid power generation channel 2. According to the relationship between the sectional area of the magnetic fluid channel 21 and the flow channel 14, the sectional area of the flow channel 14 is set to be several times, preferably 7.2 times, of the sectional area of the magnetic fluid channel 21, so that the liquid metal flows through the magnetic fluid channel 21 at 5-10 times higher than the running speed of the piston 13, and the power generation power density is further improved.

The tesla valves 3 are arranged corresponding to the magnetic fluid channels 21 on each side, two ends of each tesla valve are arranged at the two ends of the magnetic fluid channel 21 respectively, the pipeline channels 15 on the two sides are provided with the tesla valves 3 in the forward direction along the same clockwise direction, the diameter of each tesla valve 3 is equal to that of each pipeline channel 15, and the diversion angle of each tesla valve 3 is 10 degrees. The tesla valve 3 is a passive one-way valve with a fixed geometry, which allows a one-way fluid flow (i.e. a forward flow and a reverse blocking) due to its fixed geometry, thus making up for the disadvantage of the traditional valve that is easily damaged due to the need for movable parts, and it can replace a movable valve, which allows a one-way fluid flow due to the inertia of the fluid and a different flow resistance when passing through the valve in different directions.

As shown in fig. 1, tesla valves 3 are respectively installed at the inlet and outlet of the magnetohydrodynamic generation channel 2 at the left and right ends. The left end is installed from top to bottom in a forward direction, and the right end is installed from bottom to top in a forward direction. The liquid metal is packaged in a piston 13 cylinder, the piston rod 12 and the piston 13 are pushed to reciprocate by the force from the wave capture device, and the liquid metal in the piston 13 cylinder is driven to flow through the magnetofluid power generation channel 2 in a reciprocating mode to generate power. When the floater 4 is positioned at the wave valley, the hydraulic cylinder moves downwards, the liquid metal is in an accelerating state when flowing through the right magnetic fluid channel 21, and the liquid metal flows through the channel at a high speed to generate electric energy; when the floater 4 is at a wave crest, the hydraulic cylinder moves upwards, and the liquid metal flows through the Tesla valve 3 at the left end and is accelerated to pass through the magnetic fluid channel 21, so that the power density of the power generation is improved.

The basic principle of magnetohydrodynamic electricity generation is Faraday's law of electromagnetic induction, which converts the fluctuation of waves into reciprocating motion of liquid metal by the interaction of moving conductive fluid and magnetic field to generate electric energy. According to the principle of the magnetohydrodynamic generator, the power generation mode can be well matched with the motion characteristics of slow wave motion speed and huge acting force, and a novel wave power generation technology with high conversion efficiency, high power density, compact structure and good mobility is formed. The oscillating floater is simple to manufacture, a hydraulic system or a mechanical system can be adopted to transfer energy, the efficiency is higher than that of an oscillating water column, and the energy is easy to collect by adopting the hydraulic system to form a large-scale power generation system; the generator can generate electricity and output non-electric power, thereby realizing multiple purposes.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a liquid metal fluid wave energy power generation facility which characterized by: comprises a cylinder body (11), a piston rod (12), a piston (13), a floater (4) fixedly arranged at the upper end of the piston rod (12), and a heavy object (5) fixedly connected to the lower end of the piston rod (12);

a flow channel (14) for the piston rod (12) to push the piston (13) to reciprocate and a pipeline channel (15) which is communicated and connected with the two ends of the flow channel (14) to form a loop for liquid metal to flow are arranged in the cylinder body (11); the pipeline channel (15) is respectively arranged on two sides of the flow channel (14), a magnetofluid power generation channel (2) is arranged in the pipeline channel (15), and the pipeline channel (15) is internally provided with a Tesla valve (3) along the same clockwise direction.

2. The liquid metal fluid wave energy power generation device of claim 1, wherein: the magnetofluid power generation channel (2) comprises a magnetofluid channel (21) and a magnet (22) fixedly arranged on the outer side of the magnetofluid channel (21); the Tesla valve (3) is provided with two Tesla valves which are respectively installed at two ends of the magnetic fluid channel (21) in the forward direction.

3. The liquid metal fluid wave energy power generation device of claim 2, wherein: the cross-sectional area of the flow channel (14) is larger than the cross-sectional area of the magnetic fluid channel (21).

4. The liquid metal fluid wave energy power generation device of claim 3, wherein: the diameter of the Tesla valve (3) is equal to the diameter of the pipeline channel (15).

5. The liquid metal fluid wave energy power generation device of claim 4, wherein: the diversion angle of the Tesla valve (3) is 10 degrees.