CN101672251A - Unconventional wind-accumulation acceleration type wind power generator - Google Patents
Unconventional wind-accumulation acceleration type wind power generator Download PDFInfo
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- CN101672251A CN101672251A CN200910041133A CN200910041133A CN101672251A CN 101672251 A CN101672251 A CN 101672251A CN 200910041133 A CN200910041133 A CN 200910041133A CN 200910041133 A CN200910041133 A CN 200910041133A CN 101672251 A CN101672251 A CN 101672251A
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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
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Abstract
The invention relates to the utilization of novel energy resources. The unconventional wind power generator comprises two wind-accumulation acceleration type wind power generators, i.e. a wind-accumulation acceleration type wind power generator with an air exhaust device and a wind-accumulation acceleration type wind power generator with a cyclone tower, wherein the principle of the wind-accumulation acceleration type wind power generator with the air exhaust device is to utilize the temperature difference energy of air for power generation, and the wind-accumulation acceleration type wind power generator with the air exhaust device comprises a wind-powered machine, an air cylinder, a convergent nozzle or a Laval nozzle, the air exhaust device and the like; the principle of the wind-accumulation acceleration type wind power generator with the cyclone tower is to utilize the pressure difference energy of the air for power generation, and the wind-accumulation acceleration type wind power generator with the cyclone tower comprises a wind-powered machine, the cyclone tower and the like.
Description
Technical field
The present invention relates to utilization of new energy resources. the unconventional wind-driven generator of this class comprises two kinds of wind-gathering and speed-increasing windmill generators, a kind of is the wind-gathering and speed-increasing windmill generator of band air extractor, principle is to utilize the thermal gradient energy generating of air, and it is made up of wind energy conversion system, cylinder, convergent jet pipe or laval nozzle, air extractor etc.; Another kind is the wind-gathering and speed-increasing windmill generator of band whirlwind tower, and principle is to utilize the pressure reduction of air to generate electricity, and it is made up of wind energy conversion system, whirlwind tower etc.
Background technique
The wind energy conversion system of prior art does not have the area of strong wind not use on the face of land.In addition, the wind-power electricity generation of prior art also exists cost of electricity-generating height, equipment that problems such as difficulty, output electric energy instability are installed.The present invention also is to the existing invention of the inventor (Chinese patent application number: further improvement 200810198515.1 and 200810198657.8), purpose is that extraneous back-pressure is too high under the solution natural condition, convergent jet pipe or the unfavorable problem of laval nozzle wind speed speedup.
Summary of the invention
In order to overcome the above-mentioned deficiency of prior art, in the existing invention of the inventor (Chinese patent application number: on the basis 200810198515.1 and 200810198657.8), the invention provides a kind of electricity generating device that can increase wind energy conversion system power widely and export regulated power.
1, for the wind-gathering and speed-increasing windmill generator of band air extractor
The present invention comprises multiple cyclic process.Air successively in main convergent jet pipe or main laval nozzle, in the air extractor, flow in secondary convergent jet pipe or the secondary laval nozzle, and to being installed in the wind energy conversion system acting generating of each jet pipe exhaust outlet.Air mobile in main convergent jet pipe or main laval nozzle is a kind of in adiabatic expansion process, isothermal expansion process, the polytropic expansion process; Air mobile in air extractor is a kind of in adiabatic compression process, isothermal compression process, the changeable compression process; Air mobile in secondary convergent jet pipe or secondary laval nozzle is a kind of in adiabatic expansion process, isothermal expansion process, the polytropic expansion process.
One or more vertical shaft master wind energy conversion system 1 is installed in outlet 6 the cylinder 9 of bleeding that main convergent jet pipe or main laval nozzle exhaust outlet 8 and air extractor 2 arranged.Cylinder 9 can rotate around the main shaft of main wind energy conversion system 1.Main convergent jet pipe or main laval nozzle can rotate around cylinder 9.
One, cylinder 9 is made by the material of good heat-transfer, the equipment that can strengthen heat exchange as fan etc. can be installed in cylinder 9, also can be in the cylinder wall perforate, ambient air is introduced in the cylinder 9, purpose is to accelerate the inside and outside thermal equilibrium of cylinder 9, makes air extractor 2 bleed the gas temperature of inlet and external temperature about equally.This is an isobaric temperature-rise period, the heat in the absorption of air external world in the cylinder 9.By abundant heat exchange, control air extractor 2 bleed the inlet gas temperature and external temperature about equally; The speed of control air extractor 2 gas of releasing approximates zero or far below the speed of the wind comes from of main convergent jet pipe or main laval nozzle wind inlet 7; The pressure of the gas that control air extractor 2 is released is equal to or slightly greater than the atmospheric pressure that air extractor 2 is bled and exported.
Two, cylinder 9 is made by the good material of heat-shielding performance, and purpose is to keep low-temp low-pressure when making cylinder 9 inherent work, to adapt to different circuit needs.
Main laval nozzle exhaust outlet 8 also can be installed in the top or the bottom of cylinder 9, correspondingly, main laval nozzle wind inlet 7 up or down, the main wind energy conversion system 1 optional horizontal-shaft wind turbine of using, the main shaft of main wind energy conversion system 1 or angled with main laval nozzle wind inlet 7 is with the airflow direction of the main laval nozzle exhaust outlet 8 of correspondence.The blade of main wind energy conversion system 1 can be deep into the expansion of main laval nozzle 3.
The rate of air sucked in required of speed-adjustable motor control air extractor 2 is to reach the exhaust outlet back-pressure that reduces and control main convergent jet pipe or main laval nozzle, the purpose that obtains desirable exhaust outlet high wind speed; Thereby extraneous back-pressure height, convergent jet pipe or the unfavorable problem of laval nozzle 3 wind speed speedups of convergent jet pipe under the natural condition or laval nozzle exhaust outlet 8 have been solved.
Speed-adjustable motor and the effect that has control generator 10 to rotate with rated speed, generator 10 invariablenes turning speeds will be exported stable electric energy.
Convergent jet pipe or laval nozzle wind inlet have an inlet stable section 11 that is similar to Venturi tube inlet cylindrical section, the shape and the length of this inlet stable section 11 are decided on the parameter of convergent jet pipe or laval nozzle wind inlet 7, and effect is to make air-flow keep uniform and stable.
The exhaust outlet of convergent jet pipe or laval nozzle faces the blade with the wind of wind energy conversion system.
2, for the wind-gathering and speed-increasing windmill generator of band whirlwind tower
Install the dividing plate that can rotate around whirlwind tower of five equilibrium whirlwind tower outer wall circumference additional at the outer wall of whirlwind tower, constitute a plurality of horizontal convergent jet pipes that can rotate around whirlwind tower, can play the effect that increases wind speed, or the convergent jet pipe of whole whirlwind tower and whirlwind tower outer wall can rotate around a vertical shaft.This speeder is equipped with wind speed wind direction sensor and tuning speed regulating mechanism.
Description of drawings
Fig. 1 is a Unconventional wind-accumulation acceleration type wind power generator schematic representation one of the present invention.
Among the figure: 1, main wind energy conversion system; 2, air extractor; 3, main convergent jet pipe or main laval nozzle; 4, secondary convergent jet pipe or secondary laval nozzle that vertical fixing is installed; 5, secondary wind-driven generator; 6, the outlet of bleeding; 7, main convergent jet pipe or main laval nozzle wind inlet; 8, main convergent jet pipe or main laval nozzle exhaust outlet; 9, cylinder; 10, generator; 11, inlet stable section.
Embodiment
The invention provides a kind of electricity generating device that can increase wind energy conversion system power widely and export regulated power.Please refer to Fig. 1.
This speeder is equipped with wind speed wind direction sensor and tuning speed regulating mechanism, and wind speed wind direction sensor can be measured the wind speed and direction of wind inlet front and signal is passed to the tuning speed regulating mechanism; When the wind speed of wind inlet front was in the range of normal value, the tuning speed regulating mechanism can make wind inlet face the direction of the wind comes from all the time; When the wind speed of wind inlet front was lower than normal value, the tuning speed regulating mechanism can make the length elongation of dividing plate to increase the wind inlet sectional area; When the wind speed of wind inlet front is excessive, the tuning speed regulating mechanism also can be turned down the wind speed of exhaust outlet with the angle of the direction of the wind comes from or the length of shortening dividing plate to reduce the inlet air sectional area by adjusting wind inlet, and wind energy conversion system and power equipment can not damaged because of wind speed is too high.1, the wind-gathering and speed-increasing windmill generator for the band air extractor introduce a specific embodiment below, but embodiment is not limited to this example.Please refer to Fig. 1.
One or more vertical shaft master wind energy conversion system 1 is installed in outlet 6 the cylinder 9 of bleeding that main convergent jet pipe or main laval nozzle exhaust outlet 8 and air extractor 2 arranged.Cylinder 9 can rotate around the main shaft of main wind energy conversion system 1.Or main convergent jet pipe or main laval nozzle can rotate around cylinder 9.
All the main convergent jet pipes or the main laval nozzle exhaust outlet 8 of elder generation's shifter cylinder 9, then 2 pairs of cylinders 9 of air extractor are bled, when the air pressure of cylinder 9 reaches certain vacuum and spends, the extraneous back-pressure of just main convergent jet pipe or main laval nozzle exhaust outlet 8 is reduced to certain vacuum when spending, open a main convergent jet pipe or a main laval nozzle exhaust outlet 8 that faces the direction of the wind comes from, and continue other the main convergent jet pipe or the main laval nozzle exhaust outlet 8 of shifter cylinder 9.When air extractor 2 was constantly bled, the tuning speed regulating mechanism made a wind inlet 7 face the direction of the wind comes from all the time.
Because constantly bleeding of air extractor reduced the extraneous back-pressure of main convergent jet pipe or main laval nozzle exhaust outlet 8, strengthened the acceleration of air-flow in main convergent jet pipe or main laval nozzle 3 and flowed, therefore will obtain high wind speed at exhaust outlet.Thereby extraneous back-pressure height, convergent jet pipe or the unfavorable problem of laval nozzle 3 wind speed speedups of main convergent jet pipe under the natural condition or main laval nozzle exhaust outlet 8 have been solved.
When the exhaust outlet wind speed reaches the startup wind speed, wind energy conversion system will drive generator for electricity generation.
The gas of releasing from air extractor 2 generates electricity to the secondary convergent jet pipe of vertical fixing installation or secondary wind-driven generator 5 actings of secondary laval nozzle 4 outlets.
Speed-adjustable motor also has control wind energy conversion system 1 to drive the effect of generator 10 with the constant rotational speed generating.
When the rotating speed of generator 10 is lower than rated speed, speed-adjustable motor will increase the rate of air sucked in required of air extractor 2, reduce the extraneous back-pressure of main convergent jet pipe or main laval nozzle exhaust outlet 8, adding the acceleration of air flow in main convergent jet pipe or main laval nozzle 3 flows, further increase the wind speed of main convergent jet pipe or main laval nozzle exhaust outlet 8, and the rotating speed that directly increases generator 10 makes it reach rated speed.
When the rotating speed of generator 10 is higher than in rated speed, speed-adjustable motor will reduce the rate of air sucked in required of air extractor 2, increase the extraneous back-pressure of main convergent jet pipe or main laval nozzle exhaust outlet 8, reducing the acceleration of air-flow in main convergent jet pipe or main laval nozzle 3 flows, reduce the wind speed of main convergent jet pipe or main laval nozzle exhaust outlet 8, and the rotating speed that directly suppresses generator 10 makes it drop to rated speed.By cooperating with wind speed wind direction sensor and tuning speed regulating mechanism, generator 10 will obtain constant rotational speed and export stable electric energy.
Air extractor 2 comprises induced draft fan, condensate extractionpump and vacuum pump etc.
In addition, also cooler can be installed in cylinder 9, reduce the extraneous back-pressure that the exhaust outlet temperature also can reduce main convergent jet pipe or main laval nozzle exhaust outlet 8, control exhaust outlet temperature can be controlled the extraneous back-pressure of main convergent jet pipe or main laval nozzle exhaust outlet 8, thereby reaches the purpose of control exhaust outlet wind speed.
Convergent jet pipe or laval nozzle wind inlet have an inlet stable section 11 that is similar to Venturi tube inlet cylindrical section, the shape and the length of this inlet stable section 11 are decided on the parameter of convergent jet pipe or laval nozzle wind inlet 7, and effect is to make air-flow keep uniform and stable.
The exhaust outlet of convergent jet pipe or laval nozzle faces the blade with the wind of wind energy conversion system.
Introducing a cyclic process below meets law of conservation of energy and externally does positive work with the wind-gathering and speed-increasing windmill generator that proves this band air extractor.Cyclic process is not limited to this example.
When air mobile in main convergent jet pipe or main laval nozzle successively is the adiabatic expansion process, mobile in air extractor is changeable compression process, when mobile in secondary convergent jet pipe or secondary laval nozzle is the isothermal expansion process, schemes as can be known air from P-V and externally do positive work.
In addition, main laval nozzle exhaust outlet 8 also can be installed in the top or the bottom of cylinder 9, correspondingly, main laval nozzle wind inlet 7 up or down, main wind energy conversion system 1 is selected horizontal-shaft wind turbine for use, the main shaft of main wind energy conversion system 1 or angled with main laval nozzle wind inlet 7 is with the airflow direction of the main laval nozzle exhaust outlet 8 of correspondence.
2, for the wind-gathering and speed-increasing windmill generator of band whirlwind tower
Install the dividing plate that can rotate around whirlwind tower of five equilibrium whirlwind tower outer wall circumference additional at the outer wall of the core whirlwind tower of whirlwind type wind energy plant, constitute a plurality of convergent jet pipes that can rotate around whirlwind tower, can play the effect that increases wind speed, or the convergent jet pipe of whole whirlwind tower and whirlwind tower outer wall can rotate around a vertical shaft.This speeder is equipped with wind speed wind direction sensor and tuning speed regulating mechanism.
The notion of whirlwind type wind energy plant (Tornado Type Wind Energy System) is proposed by YEN J T..Adjustable vertical vane is housed around whirlwind tower, and the direction blade that facings the wind is opened, and leeward direction blade is closed.According to law of conservation of angular momentum, wind promptly begins rotation after entering tower, forms a low pressure core in tower, forms very big pressure reduction with the external world, and one whirlwind is vertically upward caused in the artificially, and this low pressure core area provides the low back-pressure condition of work done for wind energy conversion system.Wind energy conversion system is installed between low pressure core area and the high pressure bottom air inlet, and the pressure reduction of wind energy conversion system both sides produces very big flow velocity, makes the wind energy conversion system rotation, drives generator for electricity generation.
Owing in tower, form a low pressure core and one whirlwind vertically upward arranged, the back-pressure of the convergent jet pipe exhaust outlet that can rotate around whirlwind tower is reduced, cause the wind speed of convergent jet pipe exhaust outlet to increase, because wind speed is big more, the pressure of low pressure core area is low more, so form chain reaction, makes the pressure reduction of wind energy conversion system both sides increasing, air-flow velocity by wind energy conversion system is more and more higher, has improved the power output of wind energy conversion system widely.
As another embodiment, can in convergent jet pipe exhaust outlet and whirlwind tower, wind energy conversion system be installed.
Claims (10)
1 one kinds of Unconventional wind-accumulation acceleration type wind power generators is characterized in that: comprise a kind of be the band air extractor wind-gathering and speed-increasing windmill generator and a kind of be the band whirlwind tower wind-gathering and speed-increasing windmill generator.
2 Unconventional wind-accumulation acceleration type wind power generators according to claim 1 is characterized in that: the wind-gathering and speed-increasing windmill generator of described band air extractor comprises secondary convergent jet pipe that main wind energy conversion system 1, air extractor 2, one or more main convergent jet pipe that can rotate around cylinder 9 or main laval nozzle 3, one or more vertical fixing are installed or secondary laval nozzle 4, the cylinder 9 that can rotate around the main shaft of main wind energy conversion system 1, generator 10 etc.
3 Unconventional wind-accumulation acceleration type wind power generators according to claim 2 is characterized in that: the wind-gathering and speed-increasing windmill generator of described band air extractor comprises multiple cyclic process.Air successively in main convergent jet pipe or main laval nozzle, in the air extractor, flow in secondary convergent jet pipe or the secondary laval nozzle, and to being installed in the wind energy conversion system acting generating of each jet pipe exhaust outlet.Air mobile in main convergent jet pipe or main laval nozzle is a kind of in adiabatic expansion process, isothermal expansion process, the polytropic expansion process; Air mobile in air extractor is a kind of in adiabatic compression process, isothermal compression process, the changeable compression process; Air mobile in secondary convergent jet pipe or secondary laval nozzle is a kind of in adiabatic expansion process, isothermal expansion process, the polytropic expansion process.
4 Unconventional wind-accumulation acceleration type wind power generators according to claim 2 is characterized in that: described main wind energy conversion system 1 is installed in outlet 6 the cylinder 9 of bleeding that main convergent jet pipe or main laval nozzle exhaust outlet 8 and air extractor 2 arranged; Main laval nozzle exhaust outlet 8 also can be installed in the top or the bottom of cylinder 9, correspondingly, main laval nozzle wind inlet 7 up or down, the main wind energy conversion system 1 optional horizontal-shaft wind turbine of using, the main shaft of main wind energy conversion system 1 or angled with main laval nozzle wind inlet 7 is with the airflow direction of the main laval nozzle exhaust outlet 8 of correspondence.
5 Unconventional wind-accumulation acceleration type wind power generators according to claim 2, it is characterized in that: described cylinder 9 is made by the material of good heat-transfer, the equipment that can strengthen heat exchange as fan etc. can be installed in cylinder 9, also can be in the cylinder wall perforate, ambient air is introduced in the cylinder 9, purpose is the thermal equilibrium inside and outside the quickening cylinder 9, make air extractor 2 bleed the inlet gas temperature and external temperature about equally, air-flow also is directed to the inlet of bleeding of air extractor 2 after abundant heat exchange to 1 acting of the main wind energy conversion system in the cylinder 9, this is an isobaric temperature-rise period, the heat in the absorption of air external world in the cylinder 9.Cylinder 9 can rotate around the main shaft of main wind energy conversion system 1 or maintain static.Cylinder 9 also can be made by the good material of heat-shielding performance, and purpose is to keep low-temp low-pressure when making cylinder 9 inherent work, to adapt to different circuit needs.
6 Unconventional wind-accumulation acceleration type wind power generators according to claim 2, it is characterized in that: described air extractor 2 is controlled by speed-adjustable motor, all jet pipe exhaust outlets 8 of elder generation's shifter cylinder 9, then 2 pairs of cylinders 9 of air extractor are bled, when the air pressure of cylinder 9 reaches certain vacuum and spends, the extraneous back-pressure of just main convergent jet pipe or laval nozzle outlet 8 is reduced to certain vacuum when spending, open a main convergent jet pipe or a laval nozzle exhaust outlet 8 that faces the direction of the wind comes from, and continue other jet pipe exhaust outlet 8 of shifter cylinder 9; When air extractor 2 was constantly bled, the tuning speed regulating mechanism made a wind inlet 7 face the direction of the wind comes from all the time; Rate of air sucked in required is decided on the extraneous back-pressure of needed main convergent jet pipe or laval nozzle exhaust outlet 8; The speed of the gas that air extractor 2 is released approximates zero or far below the speed of the wind comes from of main convergent jet pipe or laval nozzle inlet 7, and the pressure of the gas of releasing is equal to or slightly greater than the bleed atmospheric pressure of outlet 6 of air extractor 2; The gas that air extractor 2 is released is to the secondary wind-driven generator 5 acting generatings of the secondary convergent jet pipe or laval nozzle 4 exhaust outlets of vertical fixing installation.
7 Unconventional wind-accumulation acceleration type wind power generators according to claim 2 is characterized in that: described generator is controlled rotating speed by speed-adjustable motor.When the rotating speed of generator 10 is lower than rated speed, speed-adjustable motor will be by increasing the rate of air sucked in required of air extractor 2, reduce the extraneous back-pressure of main convergent jet pipe or laval nozzle exhaust outlet 8, adding the acceleration of air flow in main convergent jet pipe or laval nozzle 3 flows, further increase the wind speed of main convergent jet pipe or laval nozzle exhaust outlet 8, and the rotating speed that directly increases generator 10 makes it reach rated speed; When the rotating speed of generator 10 is higher than in rated speed, speed-adjustable motor will reduce the rate of air sucked in required of air extractor 2, increase the extraneous back-pressure of main convergent jet pipe or laval nozzle exhaust outlet 8, reducing the acceleration of air-flow in main convergent jet pipe or laval nozzle 3 flows, reduce the wind speed of main convergent jet pipe or laval nozzle exhaust outlet 8, and the rotating speed that directly suppresses generator 10 makes it drop to rated speed.By cooperating with wind speed wind direction sensor and tuning speed regulating mechanism, generator 10 will obtain constant rotational speed and export stable electric energy.Cooler is installed in cylinder 9, reduce the extraneous back-pressure that the exhaust outlet temperature also can reduce main convergent jet pipe or laval nozzle exhaust outlet 8, control exhaust outlet temperature can be controlled the extraneous back-pressure of main convergent jet pipe or laval nozzle exhaust outlet 8, thereby reaches the purpose of control exhaust outlet wind speed.
8 Unconventional wind-accumulation acceleration type wind power generators according to claim 1 is characterized in that: the wind-gathering and speed-increasing windmill generator of described band whirlwind tower comprises generator, convergent jet pipe, whirlwind tower, wind energy conversion system, wind speed wind direction sensor and tuning speed regulating mechanism etc.
9 Unconventional wind-accumulation acceleration type wind power generators according to claim 8 is characterized in that: described convergent jet pipe can be made of around the dividing plate that whirlwind tower rotates five equilibrium whirlwind tower outer wall circumference, and the convergent jet pipe can rotate around whirlwind tower; Wind speed wind direction sensor and tuning speed regulating mechanism can make wind inlet face all the time to the wind comes from direction and regulate the wind inlet wind speed; Can in convergent jet pipe exhaust outlet and whirlwind tower, wind energy conversion system be installed.
10 Unconventional wind-accumulation acceleration type wind power generators according to claim 8 is characterized in that: described whirlwind tower can rotate or maintain static around a vertical shaft.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910041133A CN101672251A (en) | 2009-07-15 | 2009-07-15 | Unconventional wind-accumulation acceleration type wind power generator |
| PCT/CN2010/073876 WO2010145518A1 (en) | 2009-06-18 | 2010-06-12 | New unconventional generator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910041133A CN101672251A (en) | 2009-07-15 | 2009-07-15 | Unconventional wind-accumulation acceleration type wind power generator |
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| CN101672251A true CN101672251A (en) | 2010-03-17 |
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| CN200910041133A Pending CN101672251A (en) | 2009-06-18 | 2009-07-15 | Unconventional wind-accumulation acceleration type wind power generator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012112068A1 (en) * | 2011-02-14 | 2012-08-23 | Beloglazov Sergey Nesterovitch | Turbocompressor wind turbine |
| CN103590981A (en) * | 2013-10-21 | 2014-02-19 | 李士明 | Laval nozzle utilized wind power generation method and multi-combination power station system |
| CN103775147A (en) * | 2013-01-28 | 2014-05-07 | 摩尔动力(北京)技术股份有限公司 | Gas working medium for speed type mechanism |
-
2009
- 2009-07-15 CN CN200910041133A patent/CN101672251A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012112068A1 (en) * | 2011-02-14 | 2012-08-23 | Beloglazov Sergey Nesterovitch | Turbocompressor wind turbine |
| CN103775147A (en) * | 2013-01-28 | 2014-05-07 | 摩尔动力(北京)技术股份有限公司 | Gas working medium for speed type mechanism |
| CN103775147B (en) * | 2013-01-28 | 2016-08-24 | 摩尔动力(北京)技术股份有限公司 | Velocity profile mechanism gas working medium |
| CN103590981A (en) * | 2013-10-21 | 2014-02-19 | 李士明 | Laval nozzle utilized wind power generation method and multi-combination power station system |
| CN103590981B (en) * | 2013-10-21 | 2016-09-07 | 李士明 | De Laval noz(zle) is utilized to carry out method and many modular stations system of wind-power electricity generation |
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Application publication date: 20100317 |