TW201425721A - Wave-powered generator - Google Patents

Abstract

The wave-powered generator includes several floating units, several frame units and several planar first electricity generating devices. Each of the floating units has a specific gravity smaller than water and thus can floats on the water surface. The frame units connect between the floating units respectively and carry the first electricity generating devices, each of which includes a piezoelectric layer composed of piezoelectric material. When the floating units move up and down along with the wave and drag the frame units to move as well, the piezoelectric layer is deformed and generates power so as to convert wave energy into electrical energy.

Description

Wave generator

The invention relates to a generator, in particular to a wave generator using wave energy.

Taiwan is an island topography with more than 1,400 kilometers of coastline. The study shows that the wave energy reserves in Taiwan are about 10 million baht, and the recoverable amount is about 100,000 baht. If it can be properly used for power generation, the converted electricity It will be considerable.

Wave power generation is one of the ways in which wave energy can be used. It is the use of wave generators to convert the kinetic energy of waves into electrical energy. How to effectively use the energy carried by waves to generate electricity has become one of the goals pursued by people in the field.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a wave generator that can efficiently utilize waves for power generation.

The wave generator provided for the above and other purposes includes a plurality of floating units, a plurality of brackets and a plurality of flat first power generating devices, wherein the floating units have a specific gravity smaller than water for floating on the water surface, and the brackets are connected to the Between the floating units, the first power generating devices are supported by the brackets, and each of the first power generating devices includes a piezoelectric layer composed of a piezoelectric material and generates electricity when strain is generated.

The invention drives the bracket displacement by the process of the fluctuation of the wave as the wave level rises and falls, and the piezoelectric layer generates strain deflection to generate electricity, thereby generating wave energy. Converted to electrical energy, which is required for general use.

In the following, the structure, the operation and the intended effect of the present invention will be described by a preferred embodiment, and the drawings are drawn to the extent that they are suitable for the description, and are not intended to represent actual ratios.

Please refer to the first figure. The wave generator 1 of the present invention is disposed at the sea or the lake surface, etc., and in order to obtain the required kinetic energy, a plurality of wave generators 1 may be disposed at the sea or the lake surface, and the electric energy generated by each wave generator 1 may be The cable 2 is sent to the substation 3 for power control operations such as rectification and voltage transformation, and then output.

Please refer to the second to fourth figures. In a preferred embodiment of the present invention, the wave generator 1 includes a plurality of floating units 10, a plurality of brackets 20, a plurality of flat first power generating devices 30, and a second power generating device 40 disposed under the water surface. A buoyancy unit 50 disposed below the water surface, a sinker 60 disposed on the bottom of the water, and a cable 70 are coupled to the second power generating device 40 and the sinker 60.

The floating unit 10 includes a central floating unit 11 and a plurality of peripheral floating units 12 distributed around the central floating unit 11 . The floating units 10 have a specific gravity smaller than water for floating on the water surface, and the central floating unit 11 can generate The buoyancy is greater than that produced by each of the peripheral floating units 12.

The brackets 20 are connected between the floating units 10, for example, radially connected to the central floating unit 11 and a peripheral floating unit 12 thereof. The brackets 20 can be hollow and flexible. hose.

The first power generating devices 30 are supported by the brackets 20, for example, disposed between two adjacent brackets 20 and fanned out, and each of the first power generating devices 30 includes A piezoelectric layer 31 is formed which is composed of a piezoelectric material and generates electricity when strain is generated, including but not limited to barium titanate, polyvinylidene fluoride (PVDF), lead zirconate titanate (PZT) crystal or PZT fiber; since the position suitable for wave power generation is generally also suitable for receiving solar energy, each of the first power generating devices 30 may further include a flexible solar power generation layer 32 located above the piezoelectric layer 31 thereof. In addition to the piezoelectric layer 31 generating electrical energy with strain, the flexible solar power generation layer 32 can further convert solar energy into electrical energy, wherein the piezoelectric layer 31 and the flexible solar power generation layer 32 can be divided into smaller ones. The power generation area, the array of the power generation areas is the first power generation device 30; in order to avoid erosion or dirt, the first power generation device 30 may further include two protective layers 33, 34, which are respectively located in the flexible solar energy Above the power generation layer 32 and below the piezoelectric layer 31, the two protective layers 33, 34 also have flexibility.

Please refer to the fifth figure for further reference. The second power generating device 40 includes a first cylinder 41 defining a piston chamber 411, a piston 42 located in the piston chamber 411, and a connecting rod 43 connected to one of the floating units 10 (for example, the central floating unit 11) And the piston 42 and the pair of second cylinders 44 respectively define a power generation chamber 441, and the pair of upper passages 45 are respectively connected between the piston chamber 411 and one of the power generation chambers 441, and the pair of lower passages 46 are different. Connected between the piston chamber 411 and one of the power generation chambers 441, and a pair of turbine generators 47, 47' are respectively disposed in the power generation chamber 441, and the piston chamber 411 and the power generation chamber 441 are filled. The water body defines a stroke between the upper and lower passages 45, 46 in the piston chamber 411. The piston 42 is displaceable within the stroke. Each of the turbine generators 47, 47' includes a body 471 and a shaft. 472 extending from the power generating chamber 441 and the two turbines 473, 473' are synchronously rotatably disposed on the rotating shaft 472, the turbine 473, 473' It is located between the upper and lower passages 45, 46, and the rotation directions of the turbines 473, 473' of the pair of turbine generators 47 are reversed, thereby offsetting the angular momentum generated by the turbines 473, 473', thereby avoiding The second power generating device 40 produces an unexpected displacement.

In addition, the second power generating device 40 can further include a plug member 48, an upper limit member 491 and a lower limit member 492. The plug member 48 is disposed on the piston chamber 411 and above the upper passage 45. The plug member 48 has a through hole 481 for the connecting rod 43 to be bored. The upper limit member 491 and the lower limit member 492 are disposed on the connecting rod 43 and respectively located above and below the plug member 48, so that when the piston 42 is Upward until the lower limit member 492 abuts against the plug 48 as its apex (as shown in Figure 7), and when the piston 42 moves down until the upper limit member 491 abuts against the plug 48, it travels The bottom point (as shown in Figure 6). In other possible embodiments of the invention, the stroke of the piston may also be limited in other ways, such as by directly providing a stop block in the piston chamber that directly blocks the piston.

The buoyancy unit 50 is disposed on the second power generating device 40 for causing the second power generating device 40 to have a floating buoyancy, which can be coupled to the first cylinder 41, for example, the first cylinder 41 is inserted through the buoyancy unit. 50 or configured in other suitable ways.

The sinker 60 is mainly fixed at a predetermined place on the bottom of the water, and the cable 70 is connected to the first cylinder 41 to define the heights of the second power generating device 40 and the buoyancy unit 50 so that the two do not rise to the surface; On the other hand, the output cables 80 of the first and second power generating devices 30, 40 can be pulled along the cable 70 to the sinker 60, which can also be integrated inside the cable 70.

In the present invention, the first and second power generating devices 30, 40 generate power output for each of their respective positions. Wherein, the bracket 20 will oscillate with the fluctuation of the floating unit 10, and the first power generating device 30 supported by the same will also produce the deflection. Shape, the piezoelectric layer 31 can generate electric power during the strain process, and the flexible solar power generation layer 32 of the first power generating device 30 generates electricity when exposed to light; in addition, as shown in the fifth to seventh figures, When the center floating unit 11 fluctuates up and down with the wave, the connecting rod 43 will drive the piston 42 to reciprocate within a predetermined stroke, and push the water body in the piston chamber 411 from the upper passage 45 or the lower passage 46 into the power generating chamber 441, respectively. And regardless of the direction of the water flow, the turbines 473, 473' can be driven to rotate by the water flow, causing the turbine generators 47, 47' to induce electrification.

As can be seen from the above, the present invention utilizes the kinetic energy of the wave by the piezoelectric layer and the second power generating device, respectively, and is expected to efficiently convert the wave energy into electrical energy, and further by the flexible solar power generation layer Converting it into electricity to create clean, renewable energy without the greenhouse gases in the process is a good alternative energy alternative.

The wave generator structure of the present invention is not limited to those described above. For example, the configuration of the floating unit, the bracket, and the first power generating device is not limited to the radial shape shown in the drawings, and the present invention is not exceeded. Changes and modifications made by the spirit should still fall within the scope of the invention as intended.

1‧‧‧Wave generator

2‧‧‧ cable

3‧‧‧Substation

10‧‧‧Floating unit

11‧‧‧Center floating unit

12‧‧‧Floating unit

20‧‧‧ bracket

30‧‧‧First power generation unit

31‧‧‧ piezoelectric layer

32‧‧‧Flexible solar power layer

33, 34‧‧ ‧ protective layer

40‧‧‧second power generation unit

41‧‧‧First cylinder

411‧‧‧Piston chamber

42‧‧‧Piston

43‧‧‧ linkage

44‧‧‧Second cylinder

441‧‧‧Power generation chamber

45‧‧‧Upper channel

46‧‧‧lower channel

47, 47'‧‧‧ Turbine Generator

471‧‧‧ Ontology

472‧‧‧ shaft

473, 473’ ‧ ‧ turbine

48‧‧‧plugs

481‧‧‧Perforation

491‧‧‧ upper limit

492‧‧‧lower limit

50‧‧‧ buoyancy unit

60‧‧‧ sinking pile

70‧‧‧ cable

80‧‧‧Output cable

The first figure is a schematic view of the state of use of the present invention.

The second drawing is a perspective view of a preferred embodiment of the invention.

The third figure is a partial schematic view of the first power generating device of the present invention.

Figure 4 is a partial cross-sectional view showing the first power generating device of the present invention.

The fifth to seventh drawings are schematic views of the state of use of the preferred embodiment of the present invention.

1‧‧‧Wave generator

10‧‧‧Floating unit

11‧‧‧Center floating unit

12‧‧‧Floating unit

20‧‧‧ bracket

30‧‧‧First power generation unit

40‧‧‧second power generation unit

41‧‧‧First cylinder

44‧‧‧Second cylinder

47, 47'‧‧‧ Turbine Generator

50‧‧‧ buoyancy unit

60‧‧‧ sinking pile

70‧‧‧ cable

80‧‧‧Output cable

Claims (10)

A wave generator comprising: a plurality of floating units having a specific gravity smaller than water for floating on the water surface; a plurality of brackets connected between the floating units; and a plurality of flat first power generating devices received by the brackets It is supported that each of the first power generating devices includes a piezoelectric layer composed of a piezoelectric material and generates electricity when strain is generated. The wave generator of claim 1, wherein each of the first power generating devices further comprises a flexible solar power generation layer above the piezoelectric layer. The wave generator of claim 2, wherein each of the first power generating devices further comprises two protective layers having flexibility, respectively located above the flexible solar power generation layer and below the piezoelectric layer. A wave generator according to any one of claims 1 to 3, further comprising a second power generating device for arranging under the water surface, the second power generating device comprising a first cylinder defining a piston chamber, a piston being located The piston chamber is connected to one of the floating unit and the piston, and the pair of second cylinders respectively define a power generating chamber, and the pair of upper channels are respectively connected between the piston chamber and one of the power generating chambers. a pair of lower passages respectively connected between the piston chamber and one of the power generation chambers, and a pair of turbine generators respectively disposed in the power generation chamber, the piston chamber and the power generation chamber being filled with a water body, and Defining a stroke between the upper and lower passages in the piston chamber, the piston system is displaceable within the stroke, each of the turbine generators includes a body, a rotating shaft extending from the power generating chamber, and a turbine synchronously rotating Provided on the rotating shaft, the turbine is located between the upper and lower passages, and the rotating direction of the turbine of the pair of turbine generators is reversed. The wave generator of claim 4, further comprising a buoyancy unit disposed under the water surface, a sinking pile disposed on the bottom of the water, and a first cylinder connected to the second power generating device and the sink a pile, the buoyancy unit being disposed in the first cylinder of the second power generating device. The wave generator of claim 5, wherein the floating unit comprises a central floating unit and a plurality of peripheral floating units, each of the brackets being radially connected to the central floating unit and a peripheral floating unit thereof, and The central floating unit is connected to the connecting rod. The wave generator of claim 4, wherein the floating unit comprises a central floating unit and a plurality of peripheral floating units are disposed around the central floating unit, each of the brackets being radially connected to the central floating unit and One of the peripheral floating units is connected to the connecting rod. The wave generator of claim 4, wherein the second power generating device further comprises a plug member disposed on the piston chamber and above the upper passage, the plug member having a through hole for the connecting rod to pass through. The wave generator of claim 8, wherein the second power generating device further comprises an upper limit member disposed on the connecting rod, the upper limit member being located above the plug member. The wave generator of claim 8, wherein the second power generating device further comprises a lower limit member disposed on the link, the lower limit member being located below the plug member.