CN108590934B - Oscillating water column type wave power generation device with height-adjustable air chamber inlet - Google Patents
Oscillating water column type wave power generation device with height-adjustable air chamber inlet Download PDFInfo
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- CN108590934B CN108590934B CN201810338992.7A CN201810338992A CN108590934B CN 108590934 B CN108590934 B CN 108590934B CN 201810338992 A CN201810338992 A CN 201810338992A CN 108590934 B CN108590934 B CN 108590934B
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- air chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
- F03B13/141—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy with a static energy collector
- F03B13/142—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy with a static energy collector which creates an oscillating water column
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
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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
- Y02E10/20—Hydro energy
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses an oscillating water column type wave power generation device with an adjustable height of an air chamber inlet, which solves the problems that the oscillating water column type wave power generation device in the prior art is fixed in structure and cannot cope with environmental changes in real time, and changes the volume of an air chamber by adjusting the height of the air chamber inlet in real time so as to cope with changes of water depth, incident wave period and wave height, thereby ensuring that the power generation device obtains optimal wave energy conversion efficiency; the technical scheme is as follows: the air chamber comprises an air chamber, wherein a front wall is fixed on the front side of the air chamber, a baffle plate in sliding connection with the front wall is arranged in the front wall, and the height of an inlet of the air chamber is changed by adjusting the height of the baffle plate in real time; the bottom of the baffle is provided with a water ballast tank, the water ballast tank is connected with a bidirectional water pump through a water pipe, and the bidirectional water pump introduces or pumps seawater into or out of the water ballast tank so as to overcome the influence of external force on the lifting of the baffle.
Description
Technical Field
The invention relates to a wave power generation device, in particular to an oscillating water column type wave power generation device with an adjustable air chamber inlet height.
Background
The oscillating water column type wave power generation device is a wave power generation device which is widely applied at present. The wave energy capture capacity of oscillating water column wave power plants is dependent on a number of factors, such as: water depth, incident wave period, wave height, air chamber volume, etc. at the power generation device.
However, the structural form and the size of the currently applied oscillating water column type wave power generation device are fixed, and particularly, the height of the inlet of the air chamber cannot be adjusted in real time, so that the wave power generation device cannot cope with the water depth change, the incident wave period and the wave height change which are influenced by tide, weather factors and the like, and the optimal wave energy conversion efficiency of the power generation device cannot be ensured.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the oscillating water column type wave power generation device with the height of the air chamber inlet adjustable, the volume of the air chamber is changed by adjusting the height of the air chamber inlet in real time, so as to deal with the changes of water depth, incident wave period and wave height, and thus the power generation device is ensured to obtain the optimal wave energy conversion efficiency.
The invention adopts the following technical scheme:
an oscillating water column type wave power generation device with an adjustable air chamber inlet height comprises an air chamber, wherein a front wall is fixed on the front side of the air chamber, a baffle plate in sliding connection with the front wall is arranged in the front wall, and the height of the air chamber inlet is changed by adjusting the height of the baffle plate in real time; the bottom of the baffle is provided with a water ballast tank, the water ballast tank is connected with a bidirectional water pump through a water pipe, and the bidirectional water pump introduces or pumps seawater into or out of the water ballast tank so as to overcome the influence of external force on the lifting of the baffle.
Further, the front wall is a cuboid structure with an opening at the bottom and is hollow inside, and first guide rail assemblies are respectively installed on two side walls of the front wall.
Furthermore, a first water pipe guide hole is formed in the top of the front wall, and traction rope guide holes are formed in two sides of the first water pipe guide hole respectively.
Further, the baffle is the hollow cuboid structure in inside, and the internal surface of baffle is equipped with many longerons and the crossbeam that are used for increasing its intensity.
Furthermore, second guide rail assemblies matched with the first guide rail assemblies are arranged on two sides of the baffle.
Furthermore, the top of the baffle plate is provided with a second water pipe guide hole for a water pipe connected with the ballast water tank to pass through, and two sides of the second water pipe guide hole are respectively fixed with a traction rope.
Further, the hauling cable is powered by a winch.
Further, a turbine generator set is installed at the top of the air chamber.
Furthermore, the bottom elevation of the front wall is flush with the high water level of the air chamber installation position.
Further, the height of the baffle is larger than the height from the bottom of the front wall to the sea bottom.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention can dynamically adjust the height of the inlet of the air chamber according to the real-time sea condition information, change the volume of the air chamber and deal with the changes of water depth, incident wave period and wave height, thereby ensuring that the power generation device obtains the optimal wave energy conversion efficiency;
(2) under the condition of extreme sea conditions, if the water level in the air chamber is too high, waves can impact the generator set to damage the generator set, and the baffle can be completely lowered to block the inlet of the air chamber, so that the safety of the generator set is guaranteed;
(3) the water ballast tank is arranged in the baffle plate, so that the influence of external force on the lifting of the baffle plate can be overcome, the lifting efficiency of the baffle plate is improved, and the height of the inlet of the air chamber can be accurately adjusted conveniently.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the front wall structure of the present invention;
FIG. 3 is a schematic view of the construction of the side panel of the front wall of the present invention;
FIG. 4 is a schematic view of the baffle structure of the present invention;
the device comprises a gas chamber 1, a turbine generator set 2, a front wall 3, a winch 4, a first side plate 5, a first guide rail assembly 6, a traction rope guide hole 7, a first water pipe guide hole 8, a baffle 9, a traction rope 10, a second side plate 11, a second guide rail assembly 12, a second water pipe guide hole 13, a bidirectional water pump 14 and a water pipe 15.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As the background art introduces, there are fixed, unable real-time environmental change's of oscillating water column type wave power generation device structure shortcoming among the prior art, in order to solve above-mentioned technical problem, this application has proposed an air chamber entry height-adjustable's oscillating water column type wave power generation device.
In a typical embodiment of the present application, as shown in fig. 1-4, there is provided an oscillating water column type wave power generation device with an adjustable air chamber inlet height, comprising an air chamber 1 enclosed by a housing and seawater, wherein the housing is not closed, a front wall 3 is installed at the front end of the housing, and the bottom elevation of the front wall 3 is flush with the high water level of the design of the power generation device of the present application.
The top or other positions of the air chamber 1 are provided with a turbine generator set 2, and the power generation mode is the prior art and is not described herein again.
A first water pipe guide hole 8 for a water pipe 15 to pass through is formed in the middle of the top plate of the front wall 3, and a traction rope guide hole 7 for a traction rope 10 to pass through is respectively arranged on two sides of the first water pipe guide hole 8.
The baffle 9 is arranged in the front wall 3, the height of the baffle 9 is slightly greater than the height from the bottom of the front wall 3 to the seabed, so that the baffle 9 can be completely lowered to the seabed under extreme sea conditions, the upper part of the baffle is still positioned in the front wall 3 and cannot be separated from the front wall 3, and otherwise, the baffle can overturn; furthermore, in extreme sea conditions, the baffle 9 is lowered completely to the sea floor and the ballast tanks in the baffle are filled with ballast water to resist the impact of wave forces and prevent overturning.
The baffle 9 is of a hollow cuboid structure, and the baffle 9 comprises a top plate, a bottom plate, a front plate, a rear plate and two second side plates 11; the outer side of the second side plate 11 is vertically installed with a second guide rail assembly 12.
The second track assembly 12 is mounted in cooperation with the first track assembly 6 to form a completed track structure, such as:
the first guide rail component 6 is a groove, the second guide rail component 12 is a bulge, and the bulge can move up and down along the groove; alternatively, the first guide rail assembly 6 is a convex guide rail, and the second guide rail assembly 12 is a slider with a groove.
A second water pipe guide hole 13 for a water pipe 15 to pass through is formed in the middle of the top plate of the baffle plate 9, and the second water pipe guide hole 13 corresponds to the first water pipe guide hole 8 in position; one end of a hauling rope 10 is respectively fixed on two sides of the second water pipe guiding hole 13, and the position for installing the hauling rope 10 corresponds to the position of the hauling rope guiding hole 7.
A plurality of longitudinal beams are respectively fixed on the inner sides of the top plate and the bottom plate of the baffle plate 9, and a plurality of cross beams are respectively fixed on the inner sides of the front plate, the rear plate and the two second side plates 11 so as to improve the strength of the baffle plate 9.
A water ballast tank is arranged at the bottom of the baffle 9 and is communicated with one end of a water pipe 15, and the water pipe 15 sequentially penetrates through the second water pipe guide hole 13 and the first water pipe guide hole 8 and extends to the outer side of the front wall 3 to be connected with one inlet of a bidirectional water pump 14; the other inlet of the bidirectional water pump 14 is connected into seawater through a water pipe; the bi-directional pump 14 pumps water into and out of the ballast tank to overcome the effect of external forces on the rise and fall of the baffles.
The hauling cable 10 passes through the hauling cable guide hole 7 to be connected with the windlass 4 outside the air chamber 1.
In order to avoid seawater corrosion, the submerged components such as the baffle 9, the first guide rail component 6, the second guide rail component 12, the traction rope 10, the water pipe 15 and the like are made of non-metal materials.
In order to ensure that the oscillating water column type wave power generation device obtains the optimal wave energy conversion efficiency, the information of the water depth, the period of incident waves, the wave height and the like at the oscillating water column type wave power generation device needs to be mastered in real time, and therefore a matched device needs to be arranged: water depth measuring instruments, wave instruments, and the like.
In the design stage, the change rule of the wave energy conversion efficiency under the conditions of different air chamber inlet heights, water depths, wave factors and the like is generally analyzed through software or a program; for example: fixing a certain water depth and wave element to obtain different wave energy conversion efficiencies under the condition of different air chamber inlet heights, and finding out the corresponding air chamber inlet height range when the wave energy conversion efficiency is better; by changing a group of water depth and wave elements, different wave energy conversion efficiencies under the condition of different air chamber inlet heights can be obtained, and a corresponding air chamber inlet height range with better wave energy conversion efficiency can be found. Therefore, basis is provided for finding the height range of the air chamber inlet corresponding to the optimal wave energy conversion efficiency under the actual sea condition.
When the wave generating device works, the actual water depth of the generating device is measured by the water depth measuring instrument, and the period and the wave height of incident waves are measured by the wave meter; based on the numerical simulation of the power generation device at the design stage, the height range of the air chamber inlet when the wave energy conversion efficiency is optimal can be roughly estimated by combining information such as actual water depth, wave factors and the like, so that the height of the air chamber 1 inlet can be adjusted by the lifting baffle 9, and the optimal wave energy conversion efficiency is met.
For example, when the tide is low, the water depth of the oscillating water column type wave power generation device is shallow, the height range of the inlet of the air chamber 1 when the wave energy conversion efficiency is optimal is estimated by combining the measured actual water depth, wave elements and other information, and the height of the inlet of the air chamber 1 needs to be reduced; therefore, the baffle 9 is lowered through the winch 4 and the hauling rope 10, and the bidirectional water pump 14 is started to pump the seawater into the ballast water tank inside the baffle 9, so that the weight of the baffle 9 is increased, and the influence of the buoyancy of the seawater is overcome; and the lowering speed of the baffle 9 is increased.
Judging the optimal wave energy conversion efficiency and the corresponding inlet height of the air chamber 1 at the moment through the power generation output voltage signal peak value measured in real time; when the optimal wave energy conversion efficiency is achieved, the winch 4 and the bidirectional water pump 14 are stopped, and the position of the baffle 9 at this time is fixed.
When the tide is high, the water depth of the oscillating water column type wave power generation device is deep, the height range of the air chamber inlet when the wave energy conversion efficiency is optimal is estimated by combining the measured actual water depth, wave factors and other information, and the height of the air chamber 1 inlet needs to be increased; lifting the baffle 9 through the winch 4 and the hauling rope 10, and starting the bidirectional water pump 14 to pump out seawater in the ballast water tank of the baffle 9, so as to reduce the weight of the baffle 9 and overcome the influence of the gravity of the baffle 9; and the lifting speed of the baffle 9 is increased.
Judging the optimal wave energy conversion efficiency and the corresponding height of the air chamber inlet at the moment through the power generation output voltage signal peak value measured in real time; when the optimal wave energy conversion efficiency is achieved, the winch 4 and the bidirectional water pump 14 are stopped, and the position of the baffle 9 at this time is fixed.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (4)
1. An oscillating water column type wave power generation device with an adjustable air chamber inlet height is characterized by comprising an air chamber, wherein a front wall is fixed on the front side of the air chamber, a baffle plate in sliding connection with the front wall is arranged in the front wall, and the height of the air chamber inlet is changed by adjusting the height of the baffle plate in real time; the baffle is of a hollow cuboid structure, a water ballast tank is arranged at the bottom of the baffle and is connected with a bidirectional water pump through a water pipe, and the bidirectional water pump introduces or pumps seawater into or out of the water ballast tank to overcome the influence of external force on the lifting of the baffle;
the bottom elevation of the front wall is flush with the high water level of the mounting position of the air chamber, and the height of the baffle is greater than the height from the bottom of the front wall to the seabed;
the power generation device is also provided with a matching device, the matching device comprises a water depth measuring instrument and a wave meter, the water depth measuring instrument measures the actual water depth at the power generation device, the wave meter measures the period and the wave height of an incident wave, and the inlet height of the air chamber is adjusted by combining the actual water depth and wave element information based on the numerical simulation of the design stage of the power generation device;
the ballast water tank is characterized in that first guide rail assemblies are respectively installed on two side walls of the front wall, a first water pipe guide hole is formed in the top of the front wall, traction rope guide holes are respectively formed in two sides of the first water pipe guide hole, second guide rail assemblies matched with the first guide rail assemblies are arranged on two sides of the baffle, a second water pipe guide hole used for a water pipe connected with the ballast water tank to pass through is formed in the top of the baffle, traction ropes are respectively fixed on two sides of the second water pipe guide hole, and power is provided for the traction ropes through a winch.
2. The oscillating water column wave power unit with adjustable height of the air chamber inlet of claim 1, wherein the front wall is a rectangular parallelepiped structure with a hollow inside and an opening at the bottom.
3. The oscillating water column wave power unit with adjustable plenum entrance height of claim 1, wherein the inner surface of the baffle is provided with a plurality of longitudinal and transverse beams for increasing its strength.
4. The oscillating water column wave power unit with adjustable plenum inlet height of claim 1, characterized in that turbine generator set is installed on top of the plenum.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810338992.7A CN108590934B (en) | 2018-04-16 | 2018-04-16 | Oscillating water column type wave power generation device with height-adjustable air chamber inlet |
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| CN201810338992.7A CN108590934B (en) | 2018-04-16 | 2018-04-16 | Oscillating water column type wave power generation device with height-adjustable air chamber inlet |
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| CN108590934A CN108590934A (en) | 2018-09-28 |
| CN108590934B true CN108590934B (en) | 2020-04-28 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513240B (en) * | 2019-08-15 | 2020-12-22 | 哈尔滨工程大学 | Oscillating water column type wave energy device with widened wave energy capture bandwidth |
| CN110469448A (en) * | 2019-09-06 | 2019-11-19 | 大连理工大学 | A kind of buoyancy swinging mechanism and oscillaton water column type wave energy generating set |
| CN110469450A (en) * | 2019-09-10 | 2019-11-19 | 大连理工大学 | A kind of oscillaton water column type Wave energy converter including an absorption plant |
| CN114278492B (en) * | 2021-12-21 | 2022-11-11 | 北科创新(深圳)科技有限公司 | Tidal energy and wave energy combined power generation device |
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