CN107956631B - Unidirectional flow airflow channel system for oscillating water column type wave energy power generation device - Google Patents
Unidirectional flow airflow channel system for oscillating water column type wave energy power generation device Download PDFInfo
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- CN107956631B CN107956631B CN201711269347.6A CN201711269347A CN107956631B CN 107956631 B CN107956631 B CN 107956631B CN 201711269347 A CN201711269347 A CN 201711269347A CN 107956631 B CN107956631 B CN 107956631B
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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
- F03B13/24—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 to produce a flow of air, e.g. to drive an air turbine
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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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- 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 a unidirectional flow air flow channel system for an oscillating water column type wave energy power generation device, which is characterized by comprising 4 liquid seal chambers, unidirectional air pipelines and a pipe network; each liquid seal chamber is provided with two air pipelines which are respectively marked as an upper pipeline and a lower pipeline; the upper pipeline is an outlet pipeline of a gas cabin above the liquid level of the liquid seal chamber, and the lower pipeline is a pipeline with a pipe orifice at one end inserted below the liquid level of the liquid seal chamber. The invention has the beneficial effects that: the device can adopt the multistage impact type/counter-force type high-efficiency turbine to extract and convert energy to generate power, and the airflow is rectified into one direction through the one-way ventilation pipeline system, so that the problem of low gas kinetic energy extraction efficiency caused by using the Weiersi turbine and the symmetrically distributed impact type turbine with the two-way guide vanes is avoided, and the power generation energy efficiency is improved.
Description
Technical Field
The invention relates to a unidirectional flow air flow channel system for an oscillating water column type wave energy power generation device, and belongs to the technical field of new energy.
Background
The ocean covers seventy percent of the earth's surface and contains infinite energy, wherein the available energy can meet all the current energy demands on the earth. Moreover, the ocean energy is clean renewable energy source and has little pollution to the environment. According to the investigation and display of the world energy committee, the worldwide available wave energy reaches 20 hundred million kilowatts, which is equivalent to 2 times of the worldwide generated energy. The energy density of the coastal wave energy is about 2-7 kW/m. And the energy density of wave energy is about 5 times that of wind energy and 15 times that of solar energy compared with other renewable energy sources. In addition, the total wave energy storage amount is far greater than that of wind energy, only small energy loss exists in the propagation process, and wave power generation can be carried out within 90% (20% -30% of wind energy and solar energy) of one year. In addition, 37% of the world population resides in an area 90km off shore. It follows that if this energy can be used effectively, it would be extremely beneficial to humans.
The oscillating water column type wave energy power generation device is the most successful wave energy conversion device in the world at present because of the advantages of simple structure, reliable performance and the like. The oscillating water column type wave energy generating device is the most important and accepted device which has the most promising application, the greatest research force and the greatest construction and use in various countries at present. The oscillating water column device has mainly one air chamber with one opening submerged below the water surface and one airflow passage in the upper part. When wave fluctuates, the liquid level in the air chamber rises or falls, so that the pressure of the air chamber changes, and air flows out of the air flow channel and flows into the air chamber, thereby pushing a turbine arranged in the air flow channel to rotate, and converting wave energy into mechanical energy to generate electricity. The key component of the oscillating water column type wave energy power generation device is a turbine, and because the air flow is reciprocating, a turbine which can rotate in the same direction under the action of bidirectional air flow is needed, and the turbine which can realize bidirectional power generation in practical application at present mainly comprises a Weiersi turbine and an impact turbine with bidirectional guide vanes. Because of the two-way flow of the air flow, the turbines are symmetrical in structure, the multistage turbine type is difficult to realize, and the energy conversion efficiency is low.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a unidirectional flow air flow channel system for an oscillating water column type wave energy power generation device, so that the air flow direction of a turbine installed in an air flow channel is unique when the liquid level of an air chamber is lifted, and the working efficiency of a turbine generator set is improved.
In order to achieve the above object, the present invention adopts the following technical scheme:
the unidirectional flow airflow channel system for the oscillating water column type wave energy power generation device is characterized by comprising an air chamber, a turbine power generation device, a liquid seal chamber, a unidirectional ventilation pipeline and a pipe network; the four liquid seal chambers are respectively and sequentially marked as a first liquid seal chamber, a second liquid seal chamber, a third liquid seal chamber and a fourth liquid seal chamber; the top of the air chamber is provided with a pipeline;
each liquid seal chamber is provided with two air pipelines which are respectively marked as an upper pipeline and a lower pipeline; the upper pipeline is an outlet pipeline with one end positioned in a gas cabin above the liquid level of the liquid seal chamber, and the lower pipeline is a pipeline with one end pipe orifice inserted below the liquid level of the liquid seal chamber;
the upper pipeline of the first liquid seal chamber is communicated with the upper pipeline of the second liquid seal chamber, which is called an upper pipeline pair, and the lower pipeline of the third liquid seal chamber is communicated with the lower pipeline of the fourth liquid seal chamber, which is called a lower pipeline pair;
the turbine power generation device is arranged in the unidirectional ventilation pipeline connected with the lower pipeline pair;
the lower pipeline of the second liquid seal chamber, the upper pipeline of the third liquid seal chamber and the top pipeline of the air chamber of the oscillating water column type device are communicated.
The unidirectional flow air flow channel system for the oscillating water column type wave energy power generation device is characterized in that the driving air flow received by the turbine power generation device is unidirectional.
The unidirectional flow airflow channel system for the oscillating water column type wave energy power generation device is characterized in that an inlet is formed in the bottom of the air chamber and used for entering and exiting waves.
The unidirectional flow air flow channel system for the oscillating water column type wave energy power generation device is characterized in that the geometric dimensions of all liquid seal chambers are the same; the liquid in the liquid seal chamber is the same, and non-toxic pollution-free liquid which is not easy to volatilize is adopted.
The unidirectional flow air flow channel system for the oscillating water column type wave energy power generation device is characterized in that the liquid heights in all the liquid seal chambers are the same.
The unidirectional flow air flow channel system for the oscillating water column type wave energy power generation device is characterized in that the pipe diameters of the lower pipelines in all the liquid seal chambers are the same.
The unidirectional flow air flow channel system for the oscillating water column type wave energy power generation device is characterized in that the lower pipeline adopts one pipeline or at least two integrated pipeline bundles; the total through-flow cross-sectional area of the duct or duct bundle is the same as the cross-sectional area of the unidirectional ventilation duct.
The unidirectional flow air flow channel system for the oscillating water column type wave energy power generation device is characterized in that the pipe orifices of the lower pipes in the liquid seal chambers are inserted into the liquid level to the same depth.
The unidirectional flow air flow channel system for the oscillating water column type wave energy power generation device is characterized in that the pipe orifice of the lower pipe in the liquid seal chamber is inserted into the liquid level with the depth of 3-5 cm.
The invention has the beneficial effects that: the device can adopt the multistage impact/counter-force type high-efficiency turbine to extract and convert energy to generate power, and the airflow is rectified into one direction through the one-way ventilation pipeline, so that the problem of low extraction efficiency of gas kinetic energy caused by using the two special turbines is avoided, and the power generation energy efficiency is improved; the unidirectional airflow channel system has simple structure, and the device has strong reliability because the pipeline part can not be directly impacted by waves.
Drawings
FIG. 1 is a schematic diagram of the device when the wave surface rises;
fig. 2 is a schematic diagram of the device when the wave surface descends.
Meaning of reference numerals in the drawings:
1-8-pipeline, 9-turbine power generation device and 10-air chamber.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
In the prior art, the reciprocating motion of waves causes the gas driving the turbine to rotate to flow bidirectionally, so that the turbine component can only be in a single-stage symmetrical shape, such as a Wils turbine and an impact turbine with bidirectional guide vanes which are symmetrically distributed, and the problem is that the single-stage bilateral symmetry turbine has lower extraction efficiency of the kinetic energy of the gas, so that the working efficiency of the generator set is low.
In order to improve the situation, the invention designs a unidirectional airflow channel system, so that the airflow direction of the turbine arranged in the airflow channel is unique when the liquid level of the air chamber is lifted, the turbine generating set component can adopt a multi-stage impact type/counter-force type efficient turbine, the extraction rate and the conversion rate of incoming airflow energy are improved, the working efficiency of the turbine generating set is improved, and the energy efficiency of the oscillating water column type wave energy generating technology is improved.
Structurally comprises an air chamber, a liquid seal chamber, a one-way ventilation pipeline and a turbine power generation device.
The number of the liquid seal chambers is four, and for convenience of explanation, the liquid seal chambers are respectively and sequentially marked as a first liquid seal chamber, a second liquid seal chamber, a third liquid seal chamber and a fourth liquid seal chamber from left to right in the drawing.
The upper pipeline 2 of the first liquid seal chamber, the upper pipeline 3 of the second liquid seal chamber, the lower pipeline 6 of the third liquid seal chamber and the lower pipeline 7 of the fourth liquid seal chamber are communicated to form a four-way pipe. The turbine power generation device 9 is arranged in the four-way pipe and is positioned between the connecting channel of the upper pipeline 3 of the second liquid seal chamber and the lower pipeline 6 of the third liquid seal chamber.
When the gas pressure of the lower pipeline is higher than the gas cabin pressure on the liquid level of the liquid seal chamber, air flows into the liquid seal chamber from the lower pipeline, is separated out to the gas cabin, and flows out from the upper pipeline; when the gas pressure of the lower pipeline is smaller than the gas cabin pressure on the liquid level of the sealing chamber, liquid in the liquid sealing chamber is pushed into the lower pipeline from the orifice of the lower pipeline, the liquid level in the lower pipeline rises to a pressure balance position, and gas flow from the gas cabin to the lower pipeline is prevented, so-called unidirectional flow liquid sealing elements are formed;
the lower pipeline 4 of the second liquid seal chamber, the upper pipeline 5 of the third liquid seal chamber and the top of the air chamber are communicated to form a three-way pipe.
Waves may enter and exit the air chamber 10 through the opening of the air chamber.
When the ocean liquid level rises, the gas in the gas chamber flows out through the lower pipeline of the second liquid seal chamber, and is discharged through the upper pipeline of the second liquid seal chamber in the upper pipeline pair, the one-way ventilation pipeline and the lower pipeline of the fourth liquid seal chamber in the lower pipeline pair; when the ocean liquid level descends, air in the atmosphere enters through a lower pipeline of the first liquid seal chamber, and flows into the air chamber through an upper pipeline of the first liquid seal chamber in the upper pipeline pair, a one-way ventilation pipeline, a lower pipeline of a third liquid seal chamber in the lower pipeline pair, an upper pipeline of the third liquid seal chamber and an air chamber top pipeline of the oscillating water column type device;
the air flow is convected from the upper pipeline to the lower pipeline pair no matter the ocean liquid level rises and falls, the air flow pipeline connecting the upper pipeline pair and the lower pipeline pair is a unidirectional air flow pipeline, and the driving air flow received by the turbine power generation device in the unidirectional air flow pipeline is unidirectional;
when in use, the utility model is characterized in that:
when the wave surface rises, the air pressure in the air chamber 10 rises, and the air can only flow out through the lower pipeline 4 and the upper pipeline 3 due to the liquid sealing effect of the opening of the lower pipeline 6, and then the air can only flow through the turbine generating device 9 from left to right due to the liquid sealing state of the opening of the lower pipeline 1.
When the wave surface descends, the air pressure in the air chamber 10 is reduced, and due to the liquid sealing effect of the lower pipeline 4, the air can only flow out of the lower pipeline 6 and the upper pipeline 5 into the air chamber, so that the air pressure in the lower pipeline 6 is reduced. Since the opening of the lower pipeline 7 is also in a liquid sealing state, the gas can only flow through the turbine generator 9 from left to right through the openings of the lower pipeline 1 and the upper pipeline 2.
Compared with a power generation device adopting a Weiersi turbine and an impact turbine with bidirectional guide vanes, the device can adopt a multistage impact/counter-force type high-efficiency turbine for energy extraction and conversion. The airflow is rectified into one direction through the one-way ventilating pipeline, so that the problem of low extraction efficiency of gas kinetic energy caused by using the two special turbines is avoided, and the power generation energy efficiency is improved. Meanwhile, the unidirectional airflow channel system formed by the device has simple structure, and the device has strong reliability because the pipeline part can not be directly impacted by waves.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (9)
1. The unidirectional flow airflow channel system for the oscillating water column type wave energy power generation device is characterized by comprising an air chamber, a turbine power generation device, a liquid seal chamber, a unidirectional ventilation pipeline and a pipe network; the four liquid seal chambers are respectively and sequentially marked as a first liquid seal chamber, a second liquid seal chamber, a third liquid seal chamber and a fourth liquid seal chamber; the top of the air chamber is provided with a pipeline;
each liquid seal chamber is provided with two air pipelines which are respectively marked as an upper pipeline and a lower pipeline; the upper pipeline is an outlet pipeline of the gas cabin, one end of which is positioned above the liquid level of the liquid seal chamber, and the lower pipeline is a pipeline, one end of which is inserted into the liquid level of the liquid seal chamber, of the pipe orifice;
the upper pipeline of the first liquid seal chamber is communicated with the upper pipeline of the second liquid seal chamber, which is called an upper pipeline pair, and the lower pipeline of the third liquid seal chamber is communicated with the lower pipeline of the fourth liquid seal chamber, which is called a lower pipeline pair;
the upper pipeline pair is connected with the lower pipeline pair through a one-way ventilation pipeline, and the turbine power generation device is arranged in the one-way ventilation pipeline;
the lower pipeline of the second liquid seal chamber, the upper pipeline of the third liquid seal chamber and the top pipeline of the air chamber of the oscillating water column type device are communicated.
2. A unidirectional flow air flow passage system for an oscillating water column type wave energy power generation device as claimed in claim 1, wherein the turbine power generation device is unidirectional with respect to the driving air flow.
3. A unidirectional flow air flow passage system for an oscillating water column type wave energy power generation device as defined in claim 1, wherein the bottom of said air chamber is provided with an inlet for ingress and egress of waves.
4. A unidirectional flow air flow passage system for an oscillating water column type wave energy power generation device as defined in claim 1, wherein the geometric dimensions of all liquid seal chambers are the same; the liquid in the liquid seal chamber is the same, and non-toxic pollution-free liquid which is not easy to volatilize is adopted.
5. A unidirectional flow gas flow passage system for an oscillating water column type wave power generation apparatus as defined in claim 1, wherein the liquid level in all of said liquid enclosures is the same.
6. A unidirectional flow air flow passage system for an oscillating water column type wave power generation device as defined in claim 1, wherein the pipe diameters of the lower pipes in all the liquid seal chambers are the same.
7. A unidirectional flow air flow passage system for an oscillating water column type wave energy power generation apparatus as defined in claim 6, wherein said lower duct employs one duct or at least two collective duct bundles; the total through-flow cross-sectional area of the duct or duct bundle is the same as the cross-sectional area of the unidirectional ventilation duct.
8. A unidirectional flow air flow passage system for an oscillating water column type wave power generation apparatus as defined in claim 1, wherein the nozzles of the lower pipes in all the liquid seal chambers are inserted to the same liquid level depth.
9. A unidirectional flow air flow passage system for an oscillating water column type wave energy power generation device as defined in claim 8, wherein the nozzle of the lower pipe in the liquid seal chamber is inserted into the liquid surface by a depth of 3-5 cm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711269347.6A CN107956631B (en) | 2017-12-05 | 2017-12-05 | Unidirectional flow airflow channel system for oscillating water column type wave energy power generation device |
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| CN201711269347.6A CN107956631B (en) | 2017-12-05 | 2017-12-05 | Unidirectional flow airflow channel system for oscillating water column type wave energy power generation device |
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| CN107956631A CN107956631A (en) | 2018-04-24 |
| CN107956631B true CN107956631B (en) | 2023-09-26 |
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| CN201711269347.6A Active CN107956631B (en) | 2017-12-05 | 2017-12-05 | Unidirectional flow airflow channel system for oscillating water column type wave energy power generation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024042453A1 (en) * | 2022-08-20 | 2024-02-29 | Offshore Energy Solutions ApS | Offshore apparatus for extracting energy from a fluid and methods for its use |
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| US4815286A (en) * | 1984-11-26 | 1989-03-28 | Tohoku Electric Power Company, Incorporated | Air flow check valve and system incorporating the same |
| CN2161367Y (en) * | 1993-01-18 | 1994-04-13 | 王晓伟 | Apparatus for gas bidirectional reciprocating passing same liquid medium |
| WO2005095790A1 (en) * | 2004-03-27 | 2005-10-13 | HOFFMAN, Virginia, L. | Wave energy conversion apparatus |
| RU69568U1 (en) * | 2007-06-27 | 2007-12-27 | Сергей Иванович Джаншиев | MULTI-TUBE SEA WAVE ENERGY CONVERTER |
| GB201004273D0 (en) * | 2010-03-16 | 2010-04-28 | Rolls Royce Plc | A wave energy device |
| FR3022955A1 (en) * | 2014-06-25 | 2016-01-01 | Le Muet Ivan Georges Alain | DEVICE FOR THE RECOVERY OF ENERGY ON BROAD SPARES OF HOLES |
| JP2017125437A (en) * | 2016-01-13 | 2017-07-20 | 祐一 古川 | Device for converting wave energy into compressed air |
| CN207609504U (en) * | 2017-12-05 | 2018-07-13 | 南京航空航天大学 | One-way flow gas channel system for oscillaton water column type wave energy generating set |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7836689B2 (en) * | 2005-12-14 | 2010-11-23 | Sieber Joseph D | Oscillating water column energy accumulator |
| GB0809732D0 (en) * | 2008-05-29 | 2008-07-09 | Bellamy Norman W | Pneumatic structures for wave energy conversion |
-
2017
- 2017-12-05 CN CN201711269347.6A patent/CN107956631B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4815286A (en) * | 1984-11-26 | 1989-03-28 | Tohoku Electric Power Company, Incorporated | Air flow check valve and system incorporating the same |
| CN2161367Y (en) * | 1993-01-18 | 1994-04-13 | 王晓伟 | Apparatus for gas bidirectional reciprocating passing same liquid medium |
| WO2005095790A1 (en) * | 2004-03-27 | 2005-10-13 | HOFFMAN, Virginia, L. | Wave energy conversion apparatus |
| RU69568U1 (en) * | 2007-06-27 | 2007-12-27 | Сергей Иванович Джаншиев | MULTI-TUBE SEA WAVE ENERGY CONVERTER |
| GB201004273D0 (en) * | 2010-03-16 | 2010-04-28 | Rolls Royce Plc | A wave energy device |
| FR3022955A1 (en) * | 2014-06-25 | 2016-01-01 | Le Muet Ivan Georges Alain | DEVICE FOR THE RECOVERY OF ENERGY ON BROAD SPARES OF HOLES |
| JP2017125437A (en) * | 2016-01-13 | 2017-07-20 | 祐一 古川 | Device for converting wave energy into compressed air |
| CN207609504U (en) * | 2017-12-05 | 2018-07-13 | 南京航空航天大学 | One-way flow gas channel system for oscillaton water column type wave energy generating set |
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