CN216198614U - Wave power generation device and power generation system - Google Patents
Wave power generation device and power generation system Download PDFInfo
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- CN216198614U CN216198614U CN202122448962.1U CN202122448962U CN216198614U CN 216198614 U CN216198614 U CN 216198614U CN 202122448962 U CN202122448962 U CN 202122448962U CN 216198614 U CN216198614 U CN 216198614U
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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 application discloses wave power generation device and power generation system includes: the power generation module includes: the linear generator comprises a stator component and a rotor component, wherein the relative movement direction between the rotor component and the stator component is a first direction, the stator component is connected to a fixed base at the bottom of the water, and the floating platform is connected with the rotor component; the frequency modulation module includes: the flexible subassembly, the flexible direction of flexible subassembly is the second direction, and flexible subassembly one end is connected on fixed baseplate, and the connecting rod articulates in the other end of flexible subassembly, the extending direction of connecting rod with form first contained angle between the second direction, the first guide rail of being connected with fixed baseplate, with the other end of connecting rod articulated and with first guide rail sliding fit's first slider, articulate in the first elastomeric element between floating platform and the first slider, first elastomeric element's flexible direction and the extending direction of first guide rail form the second contained angle. The adjustment of the frequency of the linear generator can be realized by adjusting the telescopic assembly.
Description
Technical Field
The present application relates generally to the field of tidal power generation, and more particularly to a wave power unit and a power generation unit.
Background
The direct-drive wave power generation device is widely applied to the field of tidal power generation, and in order to improve the power generation efficiency of the device, the method generally adopted in the prior art is as follows: the number of linear motors is increased, the internal structure of the linear generator is optimized, the shape of the floater is optimized, and the like, but under the condition that the frequency of the device is not changed, the resonance with waves cannot be well realized, and the wave energy conversion efficiency is low.
Disclosure of Invention
In view of the above-mentioned drawbacks or deficiencies of the prior art, it is desirable to provide a wave power unit and a power generation unit.
The specific technical scheme is as follows:
first aspect
The application provides a wave power device, includes:
a power generation module, the power generation module comprising:
the linear generator comprises a stator assembly and a rotor assembly, wherein the relative movement direction between the rotor assembly and the stator assembly is a first direction;
the top of the fixed base is connected with the stator assembly;
the floating platform can float on the water surface and is connected with the rotor assembly;
a frequency modulation module, the frequency modulation module comprising:
the telescopic direction of the telescopic assembly is a second direction, the second direction is perpendicular to the first direction, and one end of the telescopic assembly is connected to the fixed base;
one end of the connecting rod is hinged to the other end of the telescopic assembly, the extending direction of the connecting rod is perpendicular to the first direction, a first included angle is formed between the extending direction of the connecting rod and the second direction, and the first included angle is larger than 0 degree and smaller than or equal to 90 degrees;
the first guide rail is connected with the fixed base, and the extending direction of the first guide rail is respectively vertical to the first direction and the second direction;
the first sliding block is hinged with the other end of the connecting rod and is in sliding fit with the first guide rail;
the first elastic component is hinged between the floating platform and the first sliding block, the stretching direction of the first elastic component is perpendicular to the second direction, and a second included angle is formed between the stretching direction of the first guide rail and the extending direction of the first guide rail, and the second included angle is larger than or equal to 0 degree and smaller than 90 degrees.
Further, the retraction assembly comprises:
the motor is fixed on the fixed base;
the lead screw extends along the second direction, and one end of the lead screw is connected to the output end of the motor;
the nut is in threaded fit with the lead screw and is hinged with the connecting rod;
and the bearing is sleeved on the lead screw and connected to the fixed base.
Further, still include the direction subassembly, the direction subassembly includes:
the second guide rail is arranged on the fixed base and extends along the first direction;
and the second sliding block is connected to the floating platform and is in sliding fit with the second guide rail.
Furthermore, one side of the second sliding block, which is far away from the floating platform, is provided with a limiting piece, and the limiting piece is used for limiting the moving range of the second sliding block on the second guide rail.
Furthermore, the guide assembly further comprises two second elastic components, the two second elastic components are arranged on two sides of the stator assembly along the first direction, and the stretching direction of the second elastic components is parallel to the first direction.
Second aspect of the invention
The application provides a power generation system, characterized in that, including above wave power generation device, still include:
and the energy storage assembly is used for storing the electricity generated by the linear generator and supplying power to the telescopic assembly.
The beneficial effect of this application lies in:
through adjusting the flexible range of flexible subassembly, change connecting rod one end with distance between the first guide rail, and then change first slider with distance between the telescopic wire of flexible subassembly, and then change first guide rail extending direction with the angle between the flexible direction of first elastomeric element, and then change again first elastomeric element's action frequency, and then change again the action frequency of floating platform finally changes the action frequency of active cell subassembly has also accomplished right the regulation of electricity generation module frequency. When the frequency of the power generation module is matched with the floating frequency of the water surface, the action amplitude of the rotor assembly is the largest, and the efficiency of converting the energy floating on the water surface into electric energy by the power generation module is the highest.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic view of the overall structure of the wave power unit according to the present application.
Reference numbers in the figures: 111, a stator assembly; 112, a mover assembly; 12, fixing a base; 13, a floating platform; 22, a connecting rod; 23, a first guide rail; 24, a first slide; 25, a first elastic member; 211, a motor; 212, a lead screw; 213, a nut; 214, a bearing; 31, a second guide rail; 32, a second slide block; 320, a limiting sheet; 33, a second elastic member.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
Referring to fig. 1, a wave power generation device provided in this embodiment includes:
a power generation module, the power generation module comprising:
the linear generator comprises a stator assembly 111 and a rotor assembly 112, the relative movement direction between the rotor assembly 112 and the stator assembly 111 is a first direction,
a fixed base 12, the fixed base 12 for connecting the stator assembly 111 to the water bed,
the floating platform 13 can float on the water surface, and is connected with the rotor assembly 112;
a frequency modulation module, the frequency modulation module comprising:
a telescopic component, the telescopic direction of the telescopic component is a second direction, the second direction is perpendicular to the first direction, one end of the telescopic component is connected to the fixed base 12,
a connecting rod 22, wherein one end of the connecting rod 22 is hinged to the other end of the telescopic assembly, the extending direction of the connecting rod 22 is perpendicular to the first direction and forms a first included angle with the second direction, the first included angle is larger than 0 degree and smaller than or equal to 90 degrees,
a first guide rail 23, the first guide rail 23 being connected to the fixed base 12, and the first guide rail 23 extending in a direction perpendicular to the first direction and the second direction,
a first slide block 24, wherein the first slide block 24 is hinged with the other end of the connecting rod 22 and is in sliding fit with the first guide rail 23,
first elastic component 25, first elastic component 25 articulate in the floating platform 13 with between first slider 24, first elastic component 25's flexible direction perpendicular to the second direction, and with the extending direction of first guide rail 23 forms the second contained angle, the second contained angle is more than or equal to 0 and is less than 90.
The natural frequency formula of the relative motion of the wave power unit, as seen at the first resilient member 25, is:
where k is the elastic coefficient of the first elastic member 25; θ is an included angle between the first elastic component 25 and the first guide rail 23; m is the floating platform 13, the mover assembly 112, the limiting piece 320, the hinge between the first elastic member 25 and the floating platform 13, and the mass.
When one end of the first elastic component 25 away from the first slider 24 is hinged to the joint of the mover assembly 112 and the floating platform 13, there are:
wherein H is a distance between the stator assembly 111 and the floating platform 13; x1Is the distance between the first slider block 24 and the stator assembly 111.
In the triangle formed by the two ends of the connecting rod 22 and the stator assembly 111, it can be obtained that:
wherein L is2The length of the link 22; x2The distance from the hinge point of the link rod 22 and the telescopic assembly to the stator assembly 111.
The above formula can be used to derive:
according to the formula, when X is adjusted2Time, omega0And will vary accordingly. Therefore, under the condition that the floating frequency of the water surface is measurable, the vibration frequency of the floating platform 13 on the wave power generation device can be adjusted to be matched with the floating frequency of the water surface by adjusting the frequency modulation module, so that the amplitude of the floating platform 13 is maximum, and the efficiency of converting the energy floating on the water surface into electric energy of the wave power generation device is higher.
Wherein in a preferred embodiment of the retraction assembly, the retraction assembly comprises:
the motor 211, the said motor 211 is fixed to said fixed base 12;
the lead screw 212 extends along the second direction, and one end of the lead screw 212 is connected to the output end of the motor 211;
the nut 213 is in threaded fit with the lead screw 212, and is hinged with the connecting rod 22;
and the bearing 214 is sleeved on the lead screw 212, and is connected to the fixed base 12.
Because the motor 211 is fixed on the fixed base 12, and the output end is connected to the lead screw 212, when the motor rotates, the lead screw 212 also rotates, and then drives the nut 213 to move along the second direction, so as to adjust the distance from the hinge point of the link rod 22 and the telescopic assembly to the stator assembly 111.
Wherein in a preferred embodiment of ensuring a relative motion trajectory between the stator assembly 111 and the mover assembly 112, a guide assembly is further included, the guide assembly including:
a second guide rail 31, wherein the second guide rail 31 is provided on the fixed base 12 and extends along the first direction;
and the second sliding block 32 is connected to the floating platform 13, and is in sliding fit with the second guide rail 31.
The sliding fit between the second guide rail 31 and the second slider 32, and the second guide rail 31 being disposed on the fixed base 12 and extending along the first direction can ensure that the floating platform 13 and the mover assembly 112 connected thereto can move along the first direction, thereby avoiding the influence on the frequency of the wave power generation device and the damage to the frequency due to possible horizontal fluctuation of the water surface.
Preferably, there are two second guide rails 31 and two second sliders 32, which are symmetrically disposed on two sides of the fixed base 12, and the tops of the two second sliders 32 are connected, and the arrangement direction is perpendicular to the second direction and is equal to the distance between the two second guide rails and the fixed base 12. Therefore, when the stator assembly 111 and the mover assembly 112 move relatively, the second guide rail 31 and the second slider 32 on both sides of the movement locus can provide the same friction force, and the relative movement is more stable.
In a preferred embodiment of the present invention, which defines the relative displacement range between the mover assembly 112 and the stator assembly 111, a position-limiting sheet 320 is disposed on a side of the second slider 32 away from the floating platform 13, and the position-limiting sheet 320 is used for limiting the movement range of the second slider 32 on the second guide rail 31.
The limit piece 320 is disposed on a side of the second slider 32 away from the floating platform 13, so that when the water surface largely floats, the relative displacement between the mover assembly 112 and the stator assembly 111 is not too large, which causes the mover assembly 112 and the stator assembly 111 to be separated, and the wave power generation device can still work normally.
In a preferred embodiment of the method for improving the conversion rate of floating energy on the water surface, the guide assembly further includes two second elastic members 33, the two second elastic members 33 are respectively disposed on two sides of the stator assembly 111 along the first direction, and the extending direction of the second elastic members 33 is parallel to the first direction.
The second elastic parts 33 are respectively arranged on two sides of the stator assembly 111 along the first direction, when the water surface floating amplitude is too large, two ends of the stator assembly 111 respectively collide with the floating platform 13 and the limiting pieces 320, and at the moment, the second elastic parts 33 can reduce the loss mechanical energy to the minimum while changing the relative movement direction between the rotor assembly 112 and the stator assembly 111, so that the efficiency of converting the water surface floating mechanical energy into electric energy is fully improved.
In a preferred embodiment of guiding the action amplitude of the frequency modulation module, the system further comprises a measurement module, and the measurement module is used for measuring the frequency of the floating of the water surface.
The measuring module can measure the floating frequency of the water surface, which is set as omega,
preferably, the wave power unit further comprises a control device, the control device comprising:
a measuring module configured to measure a frequency ω of water surface floating and a distance H between the stator assembly 111 and the floating platform 13; specifically, the model can be SBY2-1 acoustic wave instrument and BX-LV400PR laser displacement sensor.
The input module is internally provided with an A/D conversion function and converts the analog signal of the frequency omega floating on the water surface into a digital signal and inputs the digital signal; specifically, the model may be an SM1231 input module.
The operation module is internally provided with a calculation formula of the wave power generation device, and the calculation formula is as follows:
the following can be obtained:
then make omega0ω available:
after the input water surface floating frequency omega is input, the distance X from the hinge point of the connecting rod 22 and the telescopic assembly to the stator assembly 111 can be calculated2(ii) a Specifically, the model may be S7-1200CPU 1211C.
The driving module drives the telescopic assembly to move a distance X along the second direction according to the driving control signal2. Specifically, the model may be an SM1232 output module.
And the driving module is configured to convert the digital signal output by the output module into an angular displacement control signal for controlling the rotation of the motor. In particular, the model may be the MA860H drive.
The execution module drives the telescopic assembly to move a distance X along a second direction according to the angular displacement control signal of the driving module2. Specifically, the model can be 86BYG250H stepping motor.
Therefore, the frequency of the wave power generation device is matched with the frequency of the wave power generation device, and the efficiency of converting the water surface floating energy into electric energy can be improved.
Example 2
The power generation system provided by the embodiment comprises the wave power generation device and an energy storage assembly, wherein the energy storage assembly is used for storing the electricity generated by the linear generator and supplying power to the telescopic assembly.
The energy storage assembly can receive the electric energy converted by the wave power generation device, and on one hand, the energy storage assembly can transmit the electric energy to the outside for use and on the other hand, the energy storage assembly can be used by the wave power generation device. Therefore, the wave power generation device does not need to be additionally connected with electric power, the power generation system can realize self power supply, the structure of the wave power generation device is simplified, and the cost is saved.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (6)
1. A wave power unit, characterized by comprising:
a power generation module, the power generation module comprising:
the linear generator comprises a stator assembly (111) and a rotor assembly (112), the relative movement direction between the rotor assembly (112) and the stator assembly (111) is a first direction,
a fixed base (12), the top of the fixed base (12) is connected with the stator assembly (111),
the floating platform (13) can float on the water surface, and is connected with the rotor assembly (112);
a frequency modulation module, the frequency modulation module comprising:
the telescopic direction of the telescopic component is a second direction, the second direction is perpendicular to the first direction, one end of the telescopic component is connected to the fixed base (12),
a connecting rod (22), wherein one end of the connecting rod (22) is hinged to the other end of the telescopic assembly, the extending direction of the connecting rod (22) is perpendicular to the first direction and forms a first included angle with the second direction, the first included angle is larger than 0 degree and smaller than or equal to 90 degrees,
a first guide rail (23), the first guide rail (23) being connected to the fixed base (12), and the first guide rail (23) extending in directions perpendicular to the first direction and the second direction, respectively,
a first sliding block (24), wherein the first sliding block (24) is hinged with the other end of the connecting rod (22) and is in sliding fit with the first guide rail (23),
first elastic component (25), first elastic component (25) articulate in floating platform (13) with between first slider (24), the flexible direction of first elastic component (25) is perpendicular to the second direction, and with the extending direction of first guide rail (23) forms the second contained angle, the second contained angle is more than or equal to 0 and is less than 90.
2. A wave-power unit according to claim 1, characterized in that the telescopic assembly comprises:
the motor (211), the said motor (211) is fixed to said fixed base (12);
the lead screw (212) extends along the second direction, and one end of the lead screw (212) is connected to the output end of the motor (211);
the nut (213), the said nut (213) cooperates with said lead screw (212) whorl, and articulate with said tie rod (22);
the bearing (214), the bearing (214) is set on the lead screw (212) and connected to the fixed base (12).
3. The wave power unit of claim 1, further comprising a guide assembly, the guide assembly comprising:
a second guide rail (31), wherein the second guide rail (31) is arranged on the fixed base (12) and extends along the first direction;
and the second sliding block (32) is connected to the floating platform (13) and is in sliding fit with the second guide rail (31).
4. A wave-power unit according to claim 3 characterized in that the side of the second skid (32) remote from the floating platform (13) is provided with a limiting piece (320), said limiting piece (320) being used to limit the range of movement of the second skid (32) on the second guide rail (31).
5. A wave-power unit according to claim 4 characterized in that the guiding assembly further comprises two second resilient members (33), the two second resilient members (33) are arranged on both sides of the stator assembly (111) in the first direction, and the extension and retraction direction of the second resilient members (33) is parallel to the first direction.
6. An electrical power generation system comprising a wave power unit according to any one of claims 1-5, and further comprising an energy storage assembly for storing electricity generated by the linear electric generator and for supplying electricity to the telescopic assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122448962.1U CN216198614U (en) | 2021-10-12 | 2021-10-12 | Wave power generation device and power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122448962.1U CN216198614U (en) | 2021-10-12 | 2021-10-12 | Wave power generation device and power generation system |
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| Publication Number | Publication Date |
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| CN216198614U true CN216198614U (en) | 2022-04-05 |
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| CN202122448962.1U Active CN216198614U (en) | 2021-10-12 | 2021-10-12 | Wave power generation device and power generation system |
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- 2021-10-12 CN CN202122448962.1U patent/CN216198614U/en active Active
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