CN115717580A - Multi-degree-of-freedom direct-drive wave power generation device - Google Patents
Multi-degree-of-freedom direct-drive wave power generation device Download PDFInfo
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- CN115717580A CN115717580A CN202211623205.6A CN202211623205A CN115717580A CN 115717580 A CN115717580 A CN 115717580A CN 202211623205 A CN202211623205 A CN 202211623205A CN 115717580 A CN115717580 A CN 115717580A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
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Abstract
The invention discloses a multi-degree-of-freedom direct-drive wave power generation device, which comprises: the motor comprises at least one first motor secondary or second motor secondary loaded with permanent magnets, at least one first motor primary or second motor primary loaded with coils, and a circular guide rail and a sliding block which are matched together to move relatively in the vertical direction. The multi-degree-of-freedom direct-drive wave energy power generation device has the advantages of simple structure, safety, reliability, environmental protection, high efficiency, flexible use and the like, can adapt to different wave shapes, realizes multiple combined relative motions of double floating bodies, particularly realizes the rotation and vertical freedom degrees of the left floating body and the right floating body which are fixedly connected together, or simultaneously moves with two freedom degrees, drives the motor to collect energy, and further improves the energy conversion efficiency.
Description
Technical Field
The invention relates to the field, in particular to a multi-degree-of-freedom direct-drive wave power generation device
Background
The high-speed development of global economy inevitably drives the increasing energy demand, and most of energy consumption at present comes from traditional fossil energy, and the energy is limited, non-renewable, environmental pollution, geological destruction, greenhouse effect and other problems. In order to realize low-carbon emission reduction and sustainable development of economy, new renewable energy sources are developed and utilized in all countries of the world and are listed as important positions of scientific research, and the renewable clean energy sources mainly comprise wind energy, solar energy and wave energy. Wave energy as one expression form of ocean energy and solar energy (0.1-0.2 kW/m) 2 ) Wind energy (0.4-0.6 kW/m) 2 ) Compared with the prior art, the energy density is higher (0.4-0.6 kW/m) 2 ). The coastline is long, the ocean area is large, the wave resources are very rich, and the development and utilization of the wave energy have good prospects and economic benefits.
Wave acquisition technology has attracted more and more researchers. Conversion from wave energy to electrical energy typically requires 3 stages of conversion: the first stage is a wave receptor for absorbing wave kinetic energy; the second stage is an intermediate conversion device which can convert the unstable energy collected by the first stage into stable energy such as hydraulic energy, water storage potential energy and the like; the third stage is a conventional power plant that converts the energy provided by the second stage into electrical energy. The multi-stage energy collection intermediate energy is greatly saved, the overall efficiency is low, the more the conversion stages are, the more the fault points are, and the equipment maintenance cost is high.
In order to improve the efficiency and reduce the cost of the multistage power generation equipment, direct-drive power generation is popular, but in the initial application stage, a plurality of problems are urgently needed to be solved.
Disclosure of Invention
The invention aims to solve the technical problem of providing a multi-degree-of-freedom direct-drive wave energy power generation device which moves under the action of wave energy and pushes a linear motor to generate power and operate. The wave energy conversion device has the characteristics of simple structure, safety, reliability, high efficiency and the like, particularly can perform energy conversion under multiple degrees of freedom, and has strong capability of adapting to different wave shapes.
In order to solve the technical problem, the invention provides a multi-degree-of-freedom direct-drive wave power generation device, which comprises: the double-floating-body driving motor comprises at least one first motor secondary 7 or second motor secondary 13 loaded with permanent magnets, at least one first motor primary 6 or second motor primary 15 loaded with coils, wherein the motor primary and the motor secondary are matched with a sliding block together through a circular guide rail, and the double-floating-body driving motor carries out various combined relative movements, wherein one floating body is a left floating body 5 and a right floating body 16 which are fixedly connected together, and the other relative floating body is a middle floating body 9;
the first motor primary 6 and the second motor primary 15 are respectively provided with a convex column in the front-back direction, the columns are matched with grooves of a first transverse plate 4 and a second transverse plate 14, a left floating body 5 and a right floating body 16 are fixedly connected together through the first transverse plate 4 and the second transverse plate 14, the left floating body and the right floating body 16 move along with the waves by taking a central shaft 11 as the center, and the fixedly connected left floating body 5 and the right floating body 16 realize relative movement in the direction of rotational freedom along with the action of the central shaft 11, or realize relative movement in the direction of vertical freedom along with the up and down of the waves, or simultaneously perform relative movement in the directions of rotation and vertical two degrees of freedom along with the waves;
the first motor secondary 7 or the second motor secondary 13 is respectively fixedly connected to the left side and the right side of the intermediate floating body 9, a central groove 9-1 of the intermediate floating body is matched with holes of a first transverse plate 4 and a second transverse plate 14 through a central shaft 11, the intermediate floating body 9 is connected with a cylindrical submerged floating body 2 through a shaft 3, the cylindrical submerged floating body 2 is fixedly connected with an underwater damping disc 1, a central shaft locking end cover 10 is arranged above the central groove 9-1 of the intermediate floating body 9, and a first motor primary 6 and a second motor primary 15 of an electromechanical coil are provided with electric energy processing and energy storage devices for transmitting power to an external network through cables;
the middle floating body 9 is arranged in water, has two movement forms of small movement or basic static movement, and the left floating body 5 and the right floating body 16 which are fixedly connected with the primary of the motor do a relative movement form with combined freedom degree relative to the middle floating body 9.
Preferably, after the central shaft 11 is matched with the central groove 9-1 of the intermediate floating body 9, the movement can be generated in the freedom degrees of rotation, vertical direction and vertical direction at the same time of rotation; the center shaft 11 can move freely in the rotational direction after engaging with the holes of the first horizontal plate 4 and the second horizontal plate 14.
Preferably, the intermediate floating body 9, the first motor secondary 7, the second motor secondary 13, the shaft 3, the cylindrical submerged floating body 2 and the damping disc 1 are fixedly connected together, hardly move with the waves, and stand in the water.
Preferably, the left floating body 5, the right floating body 16, the first cross plate 4, the second cross plate 14, the middle floating body 9, the cylindrical submerged floating body 2 and the damping disk 1 are provided with weight-reducing cavities.
Preferably, the first motor secondary 7 and the second motor secondary 13 employ Halbach permanent magnet arrays.
Preferably, the total length of the left floating body 5, the right floating body 16, the first cross plate 4 and the second cross plate 14 which are fixedly connected together is set to be more than 1/4 wave wavelength.
Preferably, the first motor primary 6 and the second motor primary 15, and the first motor secondary 7 or the second motor secondary 13 are respectively adapted by using the double first slider guide 8 and the second slider guide 12, and the primary and the secondary move with a stable gap in the vertical direction.
The invention has the beneficial effects that: the multi-degree-of-freedom direct-drive wave energy power generation device has the advantages of simple structure, safety, reliability, environmental protection, high efficiency, flexible use and the like, can adapt to different wave shapes, realizes multiple combined relative motions of double floating bodies, particularly realizes rotation and vertical degrees of freedom or simultaneous motion of two degrees of freedom of the left floating body and the right floating body which are fixedly connected together, drives the motor to collect energy, and further improves the energy conversion efficiency.
Drawings
FIG. 1 is a schematic view of the present invention.
FIG. 2 is a schematic structural view of the horizontal plate of the present invention.
Fig. 3 is a schematic structural view of the intermediate floating body according to the present invention.
Wherein, 1, damping disc; 2. the cylinder submerges the floating body; 3. a shaft; 4. a first transverse plate; 5. a left float; 6. a first motor primary; 7. a first motor secondary; 8. a first slider guide rail; 9. an intermediate float; 10. a stop end cap; 11. a central shaft; 12. a second slider guide; 13. a second motor secondary; 14. a second transverse plate; 15. a second motor primary; 16. a right float; 4-1, mounting holes; 4-2, a weight-reducing cavity; 4-3, groove; 4-4, a central hole; 9-1, a central groove; 9-2, a weight-reducing cavity; 9-3 and mounting holes.
Detailed Description
As shown in fig. 1, fig. 2 and fig. 3, a multiple degree of freedom direct-drive wave energy power generation device comprises: the double-floating-body driving motor comprises at least one first motor secondary 7 or second motor secondary 13 loaded with permanent magnets, at least one first motor primary 6 or second motor primary 15 loaded with coils, a circular guide rail and a sliding block which are matched together, and a double-floating-body driving motor performs various combinations of relative movements.
The left floating body 5, the right floating body 16, the first transverse plate 4 and the second transverse plate 14 are fixedly connected together, the first motor primary 6 and the second motor primary 15 are matched with the grooves of the first transverse plate 4 and the second transverse plate 14 through convex shafts arranged on the first motor primary 6 and the second motor primary 15 and can slide in the grooves, and the left floating body and the right floating body drive the first motor primary 6 and the second motor primary 15 to move relatively along with wave motion; the damping disc 1, the cylindrical submerged floating body 2, the middle floating body 9 and the linear motor first motor secondary 7 and the second motor secondary 13 which are fixedly connected with the middle floating body are hardly moved along with the waves; the transverse plate hole 4-3 of the moving part along with the waves is matched with the central groove 9-1 of the static part through the central shaft 11, and the moving part can realize relative motion in a vertical direction, relative motion in rotation or relative motion with two degrees of freedom of vertical rotation for the static part.
The cylindrical immersed floating body 2 is in a long cylindrical shape as a whole, is vertically arranged in the waves, and hardly moves in the vertical direction along with the waves under the damping action of the damping disc 1; the lower part of the damping disk 1 can be provided with a hinge fixed on the seabed, and the top end of the intermediate floating body 9 is provided with a stop end cover 10 to prevent the equipment from being damaged by overlarge waves.
The middle floating body 9 is provided with a weight-reducing cavity 9-2, the first transverse plate 4 is provided with a weight-reducing cavity 4-2, and the second transverse plate 14, the left floating body 5, the right floating body 16, the cylindrical submerged floating body 2 and the damping disc 1 are all provided with weight-reducing cavities, so that the overall weight of the equipment is reduced and the buoyancy generated by the equipment in waves is improved on the premise of ensuring certain structural strength and reliability; the first motor primary 6 and the second motor primary 15 are provided with cavities, and electric energy processing and storing devices are arranged in the cavities and can transmit power to an external network through cables; all cavities are sealed by sealant and coated with sealing glue.
At least one side of the two sides of the middle floating body 9 is provided with a motor for power generation, preferably a double-side motor; and the first motor primary 6 and the second motor primary 15 are respectively matched with the first motor secondary 7 and the second motor secondary 13 by adopting double-slider guide rails, so that the stable and equal-air-gap relative motion of the secondary relative to the primary is realized. It is also possible to use a form in which the primary is installed on both sides of the intermediate floating body and the moving side uses a permanent magnet array. The permanent magnet arrays of the first motor secondary 7 and the second motor secondary 13 adopt Halbach permanent magnet arrays, so that a single-side magnetic field is enhanced, and air gap flux is improved.
The height of the central groove 9-1 of the intermediate floating body 9 is related to the height of the sea waves of the place where the wave power generation equipment is put into; the length of the grooves 4-3 at two sides of the central hole of the first transverse plate 4 is related to the angle of relative rotation movement when the equipment generates electricity, and the same is true for the grooves of the second transverse plate 14; the grooves of the first horizontal plate 4 and the second horizontal plate 14 may also be in the form of through grooves. And sealing rubber gaskets are arranged between the fixed connection parts and coated with sealing glue.
The specific implementation mode of the invention is as follows:
in the working process, waves act on the left floating body 5 and the right floating body 16 to drive the floating bodies to move, the left floating body and the right floating body drive the first motor primary 6 and the second motor primary 15 and the motor secondary 8 and 13 of the middle floating body 9 through the grooves of the first transverse plate 4 and the second transverse plate 14 to move relatively, the magnetic linkage of each coil 6 and 15 in the primary changes, electromotive force is induced in the coil, and the coil is connected with an electric energy processing and storing device and then is transmitted to a power grid.
The relative movement in the working process is the combined relative movement of the double floating bodies, the left floating body 5 and the right floating body 16 which are fixedly connected together have four forms, the middle floating body 9 has two movement forms, and the two forms carry out combined relative movement. The left floating body 5 and the right floating body 16 which are fixedly connected together have four forms: the first one is that the transverse plates 4 and 14 which are fixedly connected with the left floating body 5 and the right floating body 16 are vertical to the secondary planes of the permanent magnet arrays 8 and 13 of the motor and do relative motion in the vertical direction which is vertical to the plane formed by the two transverse plates 4 and 14; the second one is that the transverse plates 4 and 14 which are fixedly connected with the left floating body and the right floating body have a fixed cross angle with the planes of the first motor secondary 7 and the second motor secondary 13, and do relative movement in the vertical direction under the condition of the fixed cross angle; the third is that the first cross plate 4 and the second cross plate 14 which are fixedly connected with the left floating body and the right floating body have a cross angle with the secondary planes of the first motor secondary 7 and the second motor secondary 13, but the cross angle is changed along with the change of motion, and the motion belongs to pure rotation relative motion; the fourth is a rotational movement accompanied by an angular change while the left and right floating bodies 5 and 16 move in the vertical direction. The device can convert the wave mechanical energy into the electric energy for the four forms of relative movement of the left floating body 5 and the right floating body 16 which are fixedly connected together. The first and the second have a common point, so that the first and the second are classified into one, namely, the relative motion of the left and the right floating bodies in the vertical direction is one degree of freedom, and the rest are respectively one degree of freedom. The intermediate floating body 9 stands in water and has two operation modes, the first mode is vertical small-amplitude movement, and the second mode is basically static. The double floating bodies make combined relative motion under the drive of waves to drive the motor to generate electricity.
Claims (7)
1. The utility model provides a multi freedom directly drives wave energy power generation facility which characterized in that includes: the double-floating-body driving motor comprises at least one first motor secondary (7) or second motor secondary (13) loaded with permanent magnets, at least one first motor primary (6) or second motor primary (15) loaded with coils, wherein the motor primary and the motor secondary are matched with a sliding block together through a circular guide rail, and the double-floating-body driving motor carries out various combined relative movements, wherein one floating body is a left floating body (5) and a right floating body (16) which are fixedly connected together, and the other relative floating body is a middle floating body (9);
the first motor primary (6) and the second motor primary (15) are respectively provided with a convex cylinder in the front-back direction, the cylinders are matched with grooves of a first transverse plate (4) and a second transverse plate (14), a left floating body (5) and a right floating body (16) are fixedly connected together through the first transverse plate (4) and the second transverse plate (14) and move with waves by taking a central shaft (11) as the center, and the fixedly connected left floating body (5) and the right floating body (16) realize relative movement in the direction of rotational freedom along with the action of the waves by taking the central shaft (11) as the center, or realize relative movement in the direction of vertical freedom along with the up-and-down of the waves, or realize relative movement in the directions of the rotational freedom and vertical freedom simultaneously along with the waves;
a first motor secondary (7) or a second motor secondary (13) is fixedly connected to the left side and the right side of a middle floating body (9) respectively, a central groove (9-1) of the middle floating body is matched with holes of a first transverse plate (4) and a second transverse plate (14) through a central shaft (11), the middle floating body (9) is connected with a cylindrical submerged floating body (2) through a shaft (3), the cylindrical submerged floating body (2) is fixedly connected with an underwater damping disc (1), a central shaft locking end cover (10) is arranged above the central groove (9-1) of the middle floating body (9), a first motor primary (6) and a second motor primary (15) of an electromechanical coil are provided with electric energy processing and energy storage devices, and power is transmitted to an external network through cables;
the middle floating body (9) is arranged in water and has two movement modes of small movement or basic rest, and the left floating body (5) and the right floating body (16) which are fixedly connected with the primary of the motor are in a relative movement mode with a combined degree of freedom relative to the middle floating body (9).
2. The multi-degree-of-freedom direct-drive wave energy power generation device as defined in claim 1, wherein after the central shaft (11) is matched with the central groove (9-1) of the intermediate floating body (9), the central shaft can rotate, vertically rotate and move in the vertical direction with the freedom degree; the central shaft (11) can move freely in the rotating direction after being matched with the holes of the first transverse plate (4) and the second transverse plate (14).
3. The multi-degree-of-freedom direct-drive wave energy power generation device as claimed in claim 1, characterized in that the intermediate floating body (9), the first motor secondary (7), the second motor secondary (13), the shaft (3), the cylindrical submerged floating body (2) and the damping disc (1) are fixedly connected together and stand in water.
4. The multi-degree-of-freedom direct-drive wave energy power generation device as claimed in claim 1, characterized in that the left floating body (5), the right floating body (16), the first transverse plate (4), the second transverse plate (14), the intermediate floating body (9), the cylindrical submerged floating body (2) and the damping disc (1) are provided with weight-reducing cavities.
5. The multiple degree of freedom direct drive wave energy power generation device of claim 1, characterized in that the first motor secondary (7) and the second motor secondary (13) employ Halbach permanent magnet arrays.
6. The multi-degree-of-freedom direct-drive wave energy power generation device as claimed in claim 1, wherein the total length of the whole body formed by fixedly connecting the left floating body (5), the right floating body (16), the first transverse plate (4) and the second transverse plate (14) is set to be larger than 1/4 of the wave wavelength.
7. The multi-degree-of-freedom direct-drive wave energy power generation device as claimed in claim 1, wherein the first motor primary (6) and the second motor primary (15), and the first motor secondary (7) or the second motor secondary (13) are respectively matched by a double first sliding block guide rail (8) and a double second sliding block guide rail (12), and the primary and the secondary move in a stable gap relative to each other in a vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211623205.6A CN115717580A (en) | 2022-12-16 | 2022-12-16 | Multi-degree-of-freedom direct-drive wave power generation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211623205.6A CN115717580A (en) | 2022-12-16 | 2022-12-16 | Multi-degree-of-freedom direct-drive wave power generation device |
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| CN115717580A true CN115717580A (en) | 2023-02-28 |
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| CN202211623205.6A Pending CN115717580A (en) | 2022-12-16 | 2022-12-16 | Multi-degree-of-freedom direct-drive wave power generation device |
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| CN (1) | CN115717580A (en) |
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- 2022-12-16 CN CN202211623205.6A patent/CN115717580A/en active Pending
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