CN101639049A - Power generation system and method from wind - Google Patents
Power generation system and method from wind Download PDFInfo
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- CN101639049A CN101639049A CN200810135337A CN200810135337A CN101639049A CN 101639049 A CN101639049 A CN 101639049A CN 200810135337 A CN200810135337 A CN 200810135337A CN 200810135337 A CN200810135337 A CN 200810135337A CN 101639049 A CN101639049 A CN 101639049A
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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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
The invention discloses a power generation system from wind, which comprises at least one windmill, at least one piston pump, and at least one hydraulic generator, wherein each of the piston pumps isconnected with a windmill through a transmission mechanism, and the piston pump is driven by the windmill to lift water from a lower position to a high-position pool; and the hydraulic generator is driven by the water flowing from the high-position pool to generate power. The invention also provides a power generation method from wind. Because the condition that the piston pump for lifting the water is incapable of lifting the water due to too low wind speed does not exist, the piston pump can lift the water at any wind speed to generate power at any wind speed.
Description
Technical field
The present invention relates to wind power generation field, particularly relate to a kind of system and a kind of method of utilizing wind-power electricity generation of utilizing wind-power electricity generation.
Background technique
Wind-force is a kind of cleaning, the never exhausted energy, and utilizing wind-force to generate electricity is fast-developing in the world a kind of generation mode.Fig. 1 is a kind of block diagram of wind-power generating system.As shown in Figure 1, this wind-power generating system comprises windmill system, gear-box and induction generator, wherein, the windmill system comprises a plurality of windmills, after each windmill is mechanical energy with wind energy transformation, by gearbox drive to an induction generator, mechanical energy is converted into electric energy by induction generator.Electrical network is gone in the Electricity Federation that induction generator produced, and is delivered in each user family again.If home-use miniature wind power generation system, the electricity that induction generator produced can be connected directly to the power supply system of family.
Generator is the core of wind-power generating system.The used generator of wind-power generating system generally includes constant-speed and constant-frequency generator and vscf generator.The fixed pitch control system of constant-speed and constant-frequency generator is controlled the constant airspeed that keeps generator by stall, and then guarantees the frequency and the constant amplitude of output voltage.But the wind speed range that the fixed pitch control system can be suitable for is less relatively, and is therefore relatively low to utilization ratio of wind energy.
The wind speed range that vscf generator can be suitable for is bigger, can catch wind energy to greatest extent, improves the utilization ratio of wind energy.Employed permagnetic synchronous motor of vscf generator or double feedback electric engine are the development trends of wind-power electricity generation.But the expense of vscf generator is more than constant-speed and constant-frequency generator costliness.
In addition, constant-speed and constant-frequency generator and vscf generator all need to use expensive inverter, and inverter damages in the application of above-mentioned wind-power electricity generation easily.Therefore, above-mentioned wind-power generating system not only needs very high equipment cost, and needs very high later maintenance cost.
Chinese patent application 200610026128.0 discloses a kind of method of combined generation of wind power and hydropower.This patent application combines water pumping of the wind-force with hydroelectric power, utilize existing small hydropower station, lift irrigation type change torque pump roller pump wind power water pumping machine in one or more is installed near its dam, water is risen to upstream (comprising multistage lifting) from the downstream, the water with normal power generation promotes the water turbine generating together again.Because water turbine, generator and power transmission and transforming equipment all are the water power plant existing device, the input of required increase has only wind power water pumping machine and corresponding water lift pipeline, therefore can reduce equipment cost.And this scheme does not need above-mentioned constant-speed and constant-frequency generator and the used inverter of vscf generator, so also reduced later maintenance cost.
Above-mentioned patent application 200610026128.0 requires the speed of employed roller pump to change along with change of wind velocity.Generally speaking, the change of wind velocity scope greatly about 6 meter per seconds to 18 meter per seconds, so the speed of roller pump also needs to have bigger excursion.When the velocity variations of roller pump is big, the stability of roller pump water lift had very big adverse effect.For example, lower and when causing the rotating speed of roller pump corresponding also low at wind speed so because roller pump can't water lift when low speed, roller pump can't water lift, thereby causes this combined generation of wind power and hydropower method can't generate electricity when low wind speed.In order to tackle change of wind velocity, need be equipped with gear-box to roller pump, and require used gear-box can adapt to bigger wind speed range.And the equipment cost of this gear-box and later maintenance cost are also very high.
Summary of the invention
In view of this, the present invention proposes a kind of system that utilizes wind-power electricity generation, in order to can both generate electricity when any wind speed.The invention allows for a kind of method of utilizing wind-power electricity generation, in order to can both generate electricity when any wind speed.
To achieve these goals, the invention provides a kind of system that utilizes wind-power electricity generation, comprising:
At least one windmill;
At least one reciprocating pump, each reciprocating pump is connected with a described windmill by a driving mechanism, and described reciprocating pump is driven by described windmill and water is promoted to a head-tank from lower;
At least one hydro-electric power generating equipment, thus described hydro-electric power generating equipment drives generating by the water that flows down from described head-tank.
Preferably, described reciprocating pump comprises a pump barrel, a bottom valve and a piston, and described piston has a safety check, and described piston is connected with described driving mechanism.
Preferably, described reciprocating pump comprises a pumping cylinder and a piston, and described piston is connected with described driving mechanism; At an end of described piston stroke, described pumping cylinder is connected with an one-way valve respectively at the Way in and the Way out of described reciprocating pump; At the other end of described piston stroke, described pumping cylinder is connected with an one-way valve respectively at the Way in and the Way out of described reciprocating pump.
Preferably, described driving mechanism comprises a lever and cam or eccentric wheel; Described cam or eccentric wheel are driven by windmill, and drive described lever motion; One end of described lever is connected with the piston of described reciprocating pump.
In technique scheme, described windmill is by driving belt or described cam of gear drive or eccentric wheel.
Preferably, the piston of described reciprocating pump is connected with described driving mechanism by a piston rod or a tightrope.
The described system of wind-power electricity generation that utilizes also comprises a direction adjusting apparatus, the direction that is used for regulating described piston rod or tightrope.
The described system that utilizes wind-power electricity generation comprises the reciprocating pump more than, and the water lift time of each reciprocating pump and other reciprocating pump stagger.
The present invention also provides a kind of method of utilizing wind-power electricity generation, may further comprise the steps:
Utilize at least one reciprocating pump of wind-drive, water is promoted to a head-tank from lower;
Water is flowed down from described head-tank, and drive at least one hydro-electric power generating equipment generating.
Preferably, this method adopts more than a reciprocating pump, and the water lift time of each reciprocating pump and other reciprocating pump stagger.
As can be seen, the reciprocating pump of water does not exist because wind speed is crossed low and situation can not water lift because the present invention is used for promoting, thereby can both promote water when any wind speed, makes and can both generate electricity when any wind speed from such scheme.The present invention can also use double acting piston pump except using single action piston pump, thereby further can improve utilization ratio of wind energy.
The present invention has also further proposed a kind of driving mechanism of uniqueness, only utilizes the wind-force jigger lifting piston when the piston of reciprocating pump rises, and does not utilize wind-force to press down piston when piston descends, thereby reduce the wind energy waste, improves the utilization ratio of wind energy.
The present invention also further utilizes the reciprocating pump more than, and the water lift time of each reciprocating pump is staggered, thereby makes total water lift amount of these reciprocating pumps keep relative stablizing, and then makes hydro-electric power generating equipment move reposefully.
Description of drawings
Fig. 1 is the structural representation of wind-power generating system in the prior art.
Fig. 2 is for utilizing the structural representation of the system of wind-power electricity generation in the embodiment of the invention.
Fig. 3 is a kind of example piston pump structure schematic representation in the embodiment of the invention.
Fig. 4 is an another kind of example piston pump structure schematic representation in the embodiment of the invention.
Fig. 5 is the schematic representation of a kind of exemplary driving mechanism in the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in more detail by the following examples.
Fig. 2 shows a kind of system that utilizes wind-power electricity generation of the embodiment of the invention.As shown in Figure 2, this utilizes the system of wind-power electricity generation to comprise: at least one windmill, at least one reciprocating pump and at least one hydro-electric power generating equipment.
Wherein, each reciprocating pump is connected to low pool and head-tank respectively by water pipe, and each reciprocating pump is connected with a windmill by a driving mechanism, thereby make windmill can drive the corresponding piston pump water is promoted to head-tank from low pool.For simplicity, only schematically shown a reciprocating pump among Fig. 2.
Each hydro-electric power generating equipment is connected to head-tank by water pipe.Thereby drive hydro-electric power generating equipment running generating from the water that head-tank flows down.The water that flows through hydro-electric power generating equipment can flow into low pool, so that recycle, also can enter other place.
Head-tank in the embodiment of the invention can be the facility that pond, reservoir, water tank etc. can retainings, and low pool can be pond, reservoir, river etc., as long as it can provide the water source.The height difference of low pool and head-tank need satisfy hydroelectric requirement, is preferably in the present embodiment about 100 meters.
Fig. 3 is the schematic representation of a kind of example piston pump in the embodiment of the invention.Shown in Figure 3 is a kind of single action piston pump, and this single action piston pump comprises a pump barrel, a bottom valve and a piston.Wherein, bottom valve and piston are arranged in pump barrel, and bottom valve is positioned at the pump barrel bottom, and piston is above bottom valve and can move up and down along pump barrel.Piston is connected with driving mechanism by a piston rod, and this piston has a safety check, and this safety check is opened in the down stroke that piston moves downward, and closes in the upstroke that piston moves upward.Bottom valve is opened in the upstroke that piston moves upward, and closes in the down stroke that piston moves downward.
Fig. 3 left side has shown the schematic representation of the down stroke of this single action piston pump.In down stroke, bottom valve cuts out, and piston is because the effect of driving mechanism or because the gravity of piston self and driving mechanism moves downward, and the safety check of piston is opened, and the water between piston and the bottom valve enters in the pump barrel above the piston by safety check.
Fig. 3 right side has shown the schematic representation of the upstroke of this single action piston pump.In upstroke, piston is owing to the effect of driving mechanism moves upward, and the water that drives the piston top also moves upward, thereby flows into head-tank; In this process, bottom valve is opened, and the water of bottom valve below is inhaled in the pump barrel between bottom valve and the piston.
Single action piston pump as shown in Figure 3 ceaselessly repeats above-mentioned down stroke and upstroke under the driving of wind-force, thereby water is promoted to head-tank from lower (for example low pool).No matter wind speed how soon or how slow, reciprocating pump can both promote water, this just makes all has water to be promoted to head-tank under any wind speed, thereby can generate electricity constantly.
Fig. 4 is an another kind of example piston pump structure schematic representation in the embodiment of the invention.This reciprocating pump is a kind of double acting piston pump.As shown in Figure 4, this double acting piston pump comprises a pumping cylinder, four one-way valves (one-way valve 1 among the figure, one-way valve 2, one-way valve 3 and one-way valve 4) and a piston.In reciprocating pump shown in Figure 4, piston is positioned at pumping cylinder, be connected with driving mechanism by a piston rod, and this piston does not have safety check (different with piston valve shown in Figure 3).End (for example upper end of piston valve shown in Figure 4) in piston stroke, pumping cylinder is connected with an one-way valve 2 at the Way in of reciprocating pump, Way out at reciprocating pump is connected with an one-way valve 1, and allow water to flow to Way out when one-way valve 1 is opened, allow water to flow into pumping cylinder when one-way valve 2 is opened from Way in from pumping cylinder.The other end (for example lower end of piston valve shown in Figure 4) in piston stroke, pumping cylinder is connected with an one-way valve 4 at the Way in of reciprocating pump, Way out at reciprocating pump is connected with an one-way valve 3, and allow water to flow to Way out when one-way valve 3 is opened, allow water to flow into pumping cylinder when one-way valve 4 is opened from Way in from pumping cylinder.
In the stroke that piston moves from bottom to top, one-way valve 1,4 is opened, and one-way valve 2,3 is closed.The water of lower is inhaled in the space of piston below in the pumping cylinder through one-way valve 4; Water in the pumping cylinder in the piston superjacent air space is pressed into water pipe through one-way valve 1, thereby flows into head-tank.
In piston stroke from the top down, one-way valve 2,3 is opened, and one-way valve 1,4 is closed.The water of lower is inhaled in the space of piston below in the pumping cylinder through one-way valve 2; Water in the pumping cylinder in the piston superjacent air space is pressed into water pipe through one-way valve 3, thereby flows into head-tank.
Single action piston pump shown in Figure 3 sucks pump barrel with water from lower in upstroke, in down stroke, bring water into head-tank from pump barrel, and double acting piston pump shown in Figure 4 can both suck water pumping cylinder and water is pressed into head-tank from pumping cylinder from the downstream in the stroke of both direction.Compare with single action piston pump shown in Figure 3, double acting piston pump shown in Figure 4 has improved efficient, has also improved utilization ratio of wind energy.
Can use existing various driving mechanism to connect between windmill among the present invention and the reciprocating pump, not give unnecessary details one by one at this.The present invention preferably can adopt the new a kind of driving mechanism as shown in Figure 5 that proposes of the present invention.Driving mechanism shown in Figure 5 comprises an eccentric wheel (also can be cam), a lever.Eccentric wheel is connected with windmill by driving belt or gear, is driven and is rotated by windmill.One end of lever is a fulcrum, and the other end is connected with the piston of reciprocating pump.Lever with can adopt piston rod or tightrope (for example wire rope, iron chains etc.) being connected of piston, preferably adopt tightrope in the embodiment shown in fig. 5.And, also comprised a direction adjusting apparatus among Fig. 5, be used for the direction of regulating piston bar or tightrope, move along suitable direction thereby drive piston.Eccentric wheel drives lever motion under the driving of windmill, that is: in a period of time, eccentric wheel drives lever and upwards lifts, and the lever drives piston moves upward, thereby finishes a stroke of piston; In time, under the action of gravity of lever and piston, piston moves downward at the other end, thereby finishes another stroke of piston.
Compare with traditional driving mechanism, driving mechanism shown in Figure 5 only needs windmill to drive in the stroke that piston moves upward, and can reduce like this wind energy is used, and reduces the waste of wind energy, improves the utilization ratio of wind energy.
Further, the embodiment of the invention can adopt the reciprocating pump more than, and the water lift time of each reciprocating pump and the water lift time of other reciprocating pump are staggered, thereby making constantly all has one or more reciprocating pumps that water is lifted in the head-tank at each, thereby make total water lift amount of these reciprocating pumps keep relative stablizing, the stable current that enter head-tank, and then the smooth running of assurance hydro-electric power generating equipment.
The method of utilizing wind-power electricity generation according to the embodiment of the invention comprises the steps: to set in advance the foregoing system that utilizes wind-power electricity generation; In running, utilize wind-force to drive windmill, windmill drives at least one reciprocating pump by driving mechanism, and water is promoted to head-tank from lower, and in running, water flows down from described head-tank, drives at least one hydro-electric power generating equipment generating.The electric energy that hydro-electric power generating equipment produces sends the user to by electrical network, perhaps directly sends the user to.
The method of utilizing wind-power electricity generation of the embodiment of the invention preferably adopts as Fig. 3 or reciprocating pump shown in Figure 4.In addition, this method can also adopt existing various driving mechanism, perhaps preferably adopts driving mechanism as shown in Figure 5.
In a preferred implementation, this method adopts the reciprocating pump more than, and the water lift time of each reciprocating pump and the water lift time of other reciprocating pump is set staggers, thereby making constantly all has one or more reciprocating pumps that water is lifted in the head-tank at each, thereby guarantees generating reposefully.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of system that utilizes wind-power electricity generation comprises:
At least one windmill;
At least one reciprocating pump, each reciprocating pump is connected with a described windmill by a driving mechanism, and described reciprocating pump is driven by described windmill and water is promoted to a head-tank from lower;
At least one hydro-electric power generating equipment, thus described hydro-electric power generating equipment drives generating by the water that flows down from described head-tank.
2, the system that utilizes wind-power electricity generation according to claim 1 is characterized in that, described reciprocating pump comprises a pump barrel, a bottom valve and a piston, and described piston has a safety check, and described piston is connected with described driving mechanism.
3, the system that utilizes wind-power electricity generation according to claim 1 is characterized in that, described reciprocating pump comprises a pumping cylinder and a piston, and described piston is connected with described driving mechanism;
At an end of described piston stroke, described pumping cylinder is connected with an one-way valve respectively at the Way in and the Way out of described reciprocating pump; At the other end of described piston stroke, described pumping cylinder is connected with an one-way valve respectively at the Way in and the Way out of described reciprocating pump.
4, the system that utilizes wind-power electricity generation according to claim 1 is characterized in that, described driving mechanism comprises a lever and cam or eccentric wheel; Described cam or eccentric wheel are driven by windmill, and drive described lever motion; One end of described lever is connected with the piston of described reciprocating pump.
5, the system that utilizes wind-power electricity generation according to claim 4 is characterized in that, described windmill is by driving belt or described cam of gear drive or eccentric wheel.
According to claim 1 or the 4 described systems that utilize wind-power electricity generation, it is characterized in that 6, the piston of described reciprocating pump is connected with described driving mechanism by a piston rod or a tightrope.
7, the system that utilizes wind-power electricity generation according to claim 6 is characterized in that, also comprises a direction adjusting apparatus, the direction that is used for regulating described piston rod or tightrope.
8, the system that utilizes wind-power electricity generation according to claim 1 is characterized in that, the described system that utilizes wind-power electricity generation comprises the reciprocating pump more than, and the water lift time of each reciprocating pump and other reciprocating pump stagger.
9, a kind of method of utilizing wind-power electricity generation comprises:
Utilize at least one reciprocating pump of wind-drive, water is promoted to a head-tank from lower;
Water is flowed down from described head-tank, and drive at least one hydro-electric power generating equipment generating.
10, method according to claim 9 is characterized in that, this method adopts more than a reciprocating pump, and the water lift time of each reciprocating pump and other reciprocating pump stagger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810135337A CN101639049A (en) | 2008-07-31 | 2008-07-31 | Power generation system and method from wind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810135337A CN101639049A (en) | 2008-07-31 | 2008-07-31 | Power generation system and method from wind |
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| CN101639049A true CN101639049A (en) | 2010-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200810135337A Pending CN101639049A (en) | 2008-07-31 | 2008-07-31 | Power generation system and method from wind |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103423097A (en) * | 2013-08-01 | 2013-12-04 | 中国大唐集团科学技术研究院有限公司 | Wind-water supplementary power generating system |
| CN103485981A (en) * | 2013-09-27 | 2014-01-01 | 河海大学 | Device utilizing wind energy for water lifting |
| CN103939261A (en) * | 2014-04-04 | 2014-07-23 | 张启文 | Wind energy, light energy, wave energy and storage complementation water pumping large hydro electric generating set |
-
2008
- 2008-07-31 CN CN200810135337A patent/CN101639049A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103423097A (en) * | 2013-08-01 | 2013-12-04 | 中国大唐集团科学技术研究院有限公司 | Wind-water supplementary power generating system |
| CN103485981A (en) * | 2013-09-27 | 2014-01-01 | 河海大学 | Device utilizing wind energy for water lifting |
| CN103939261A (en) * | 2014-04-04 | 2014-07-23 | 张启文 | Wind energy, light energy, wave energy and storage complementation water pumping large hydro electric generating set |
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Open date: 20100203 |