CN203009171U - Low wind speed wind generating set of intelligent superpower hydraulic transmission power - Google Patents
Low wind speed wind generating set of intelligent superpower hydraulic transmission power Download PDFInfo
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- CN203009171U CN203009171U CN2012205541626U CN201220554162U CN203009171U CN 203009171 U CN203009171 U CN 203009171U CN 2012205541626 U CN2012205541626 U CN 2012205541626U CN 201220554162 U CN201220554162 U CN 201220554162U CN 203009171 U CN203009171 U CN 203009171U
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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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Abstract
The utility model provides a low wind speed wind generating set of intelligent superpower hydraulic transmission power. The wind generating set comprises a blade wind wheel and is characterized in that the blade wind wheel is connected with an intelligent superpower hydraulic transmission system, and the intelligent superpower hydraulic transmission system is connected with a generator. The wind generating set not only greatly reduces cost, simplifies structure, improves wind power using efficiency of the set, but also greatly improves electricity output property of the wind generating set. Compared with a traditional way of mechanical transmitting wind power, the wind generating set has the advantages of being good in grid-connecting harmonization performance, good in low voltage traversing performance, and good in off-network independent operation property.
Description
Technical field
The utility model belong in, large-scale wind electricity technical field, specifically a kind of low wind speed wind power generator group of intelligent superhigh power fluid power transferring power.
Background technique
Modern medium-sized, Large-scale Wind Turbines is all to adopt the tool mode to carry out wind energy power, its flow process from blade wind wheel collection wind energy to last output electric energy is: the pattern of wind energy → mechanical energy → gearbox → generator, the quality of power supply of the last output of this pattern is poor, fluctuating range is very large, because without any energy storage, the means of equilibrium energy, directly be subject to the impact that wind speed changes, the electric energy that this kind fluctuation is very large when being incorporated into the power networks is unfavorable for the electrical network regulation and control very much, can not independently move.
The transmission of power pattern of the wind power generating set that this kind is traditional has developed decades, the very large power producing characteristics of its fluctuation is subject to people and denounces widely, under the support of national green energy policy, be all and net mode operation that the electrical network aspect always is with " rubbish electricity " calls it.
Also because there is no " low voltage crossing " performance when being incorporated into the power networks, causing large fluctuation to line voltage at medium-sized and large scale computer prescription face, even if again install the equipment that can carry out this performance additional, is also that investment is huge.
In addition, because rotating speed and the engine speed of blade wind wheel differs very big, the blade rotational speed of general Large-scale Wind Turbines only have 15-20 turn/per minute, and the generator speed of end turns 1500/per minute, so must make slow-speed of revolution line shaft power is high rotating speed line shaft power by the gearbox speed change, can realize normal power generation with the high-speed engine coupling.
but this is the great gearbox of a kind of gear ratio, gear ratio is generally between 1:70-1:90, large like this gear ratio has caused the very large problem of gearbox, the gearbox of so large gear ratio is because low speed gear is stressed too large, often cause damage, if strengthen the transmitted power of gearbox, can significantly increase the volume and weight of gearbox again, make the aerial cabin gross weight on whole unit top be several times increasing considerably, so the cabin weight of the aerial part of traditional wind power generating set is all at tens tons, tons up to a hundred, maximum even reach 300 tons and (see that " huge 5 megawatt wind driven generator groups " in Chinese Central Television's special report " Super Engineering " of 2012 09 month introduce, the cabinet weight at its top is exactly 300 tons of weights), wherein the shared proportion of gearbox accounts for greatly 1/3 weight in whole aerial cabin, so large weight is outstanding to be withstood on not thick especially steel cylinder, in the situation that the treacherous wind-force of nature is very unsafe beyond doubt, not only cost significantly increases, also give and make, installation has brought great trouble and a difficult problem.
The model utility content
in order to solve the problems of the technologies described above, we are by reference, study the wind-driven generator hydraulic transmitted power mode of a large amount of similar scopes, and by a large amount of actual tests, innovation and model utility, intelligent superhigh power fluid power transferring power system concept has been proposed, this is a kind of hydraulic system of integrated novel concept, two different technology categories fully from the conventional hydraulic technology, this superhigh power can be accurate, the novel hydraulics of quick adjustment, not only thoroughly abandoned the old way of the wind power generating set of " transmitting rigid power " in the machinery mode, not only improved the efficient of whole unit, and significantly alleviated cabinet weight reducing cost, the below is detailed content of the present utility model:
A kind of low wind speed wind power generator group of intelligent superhigh power fluid power transferring power comprises the blade wind wheel, it is characterized in that described blade wind wheel is connected with intelligent superhigh power fluid power delivery system, and intelligent superhigh power fluid power delivery system is connected with generator.
The low wind speed wind power generator group of described a kind of intelligent superhigh power fluid power transferring power is characterized in that described intelligent superhigh power fluid power delivery system comprises low speed superhigh power hydraulic intensifier, air pressure energy storage canister, flywheel energy storage speed stabilization machine, oil hydraulic motor and little process computer.
the low wind speed wind power generator group of described a kind of intelligent superhigh power fluid power transferring power, it is characterized in that the blade wind wheel is connected with low speed superhigh power hydraulic intensifier, low speed superhigh power hydraulic intensifier is connected with air pressure energy storage canister bypass in parallel, air pressure energy storage canister and oil hydraulic motor are connected in parallel, oil hydraulic motor is connected with flywheel energy storage speed stabilization machine axle, the flywheel energy storage speed stabilization machine is connected with generator shaft, between blade wind wheel and low speed superhigh power hydraulic intensifier, between low speed superhigh power hydraulic intensifier and air pressure energy storage canister, be respectively arranged with detecting head on the air pressure energy storage canister and on oil hydraulic motor, described detecting head is connected with the input end of little process computer respectively, on the air pressure energy storage canister, between low speed superhigh power hydraulic intensifier and air pressure energy storage canister, be respectively arranged with the execution solenoid valve between air pressure energy storage canister and oil hydraulic motor, described execution solenoid valve is connected with the output terminal of little process computer respectively.
The low wind speed wind power generator group of described a kind of intelligent superhigh power fluid power transferring power, the speed range that it is characterized in that the work of described low speed superhigh power hydraulic intensifier be 5-20 turn/per minute, its output power range is 20-2000 kilowatt.
the low wind speed wind power generator group of described a kind of intelligent superhigh power fluid power transferring power, it is characterized in that described air pressure energy storage canister is a steel circular cylindrical tank body, its volume is the 0.2-5 cubic meter, top in the air pressure energy storage canister is that purity is 99% nitrogen, the shared volume of nitrogen is the 1/2-1/3 of whole tank body volume, bottom in the air pressure energy storage canister is liquid, as hydraulic oil, alcohol, antifreeze liquid, pure water, emulsified liquid etc., preferred hydraulic oil, the range of working pressure of air pressure energy storage canister is the 5-15 MPa, the stored energy scope is 50-2000 kilowatt/power per minute.
The low wind speed wind power generator group of described a kind of intelligent superhigh power fluid power transferring power, it is characterized in that described flywheel energy storage speed stabilization machine is that an outside diameter is that 800-1200 millimeter, width are the former type flywheel of 30-40 millimeter, made by the cast iron materials that weight is the 800-2000 kilogram, the stored energy scope is 50-200 kilowatt/power per minute, the flywheel energy storage speed stabilization machine carries out precision adjustment to the fluctuating power automatic immediate on pto＝power take-off, reaches total output fluctuation ratio≤1%.
The low wind speed wind power generator group of described a kind of intelligent superhigh power fluid power transferring power, it is characterized in that described little process computer is according to the size of wind-driven generator power stage situation, the fluid pressure, the flow that produce are surveyed timely sampling, operation amplifier and provided actuating signal, output control signal, control the executive system of servo unit and immediately carry out the solenoid valve action, to whole hydraulic system carry out at any time, fast, accurate, high-power adjusting, reach the performance of high standard output total output, make the wave range of power in 1%.
Four part technology introductions of core of the present utility model are as follows:
One, superhigh power low speed hydraulic intensifier: the liquid of traditional hydraulic system (hydraulic oil) supercharging is to use suction booster, make again oil hydraulic pump accomplish, yet this oil hydraulic pump needs very high rotating speed, be generally 1500 turn/per minute, it is very large that the power capacity power range of transmitting can not be done, and only several kilowatts of general maximums are because rotating speed is high, the power that transmits is little, can not adapt to the slow-speed of revolution of wind power generating set, powerful needs.And superhigh power low speed hydraulic intensifier of the present utility model is slow-revving, rotating speed is minimum can produce very large pressure several turning per minute, the design speed range be 5-20 turn/per minute, and the power that transmits can reach 2000 kilowatts (2 megawatts), the slow-speed of revolution that is particularly suitable for present wind power generating set, powerful state, not only efficient is high, and the power of the large transmission of pressure is large.
two, air pressure energy storage regulator: liquid is incompressible, but gas can compress, air pressure accumulator of the present utility model is a steel that can bear larger pressure, the jar of cylindrical shape, volume 0.2-5 cubic meter (selecting according to watt level), lower part is hydraulic oil, upper part is nitrogen (inert gas of safety), control fast by the accurate of little process computer, the hydraulic oil of flowing through is herein carried out the adjusting of fast precise, make the nitrogen of part be subject to the compression of larger pressure, because gas has the physical property that can compress, so these are sealed in the physical action that nitrogen in cylinder of steel will form " the pressurized gas spring " of a uniqueness, when the pressure of hydraulic oil changes, this gas spring will produce and " absorb high pressure, fill up low pressure " the pressure adjusting function, adjusting (this quick adjustment valve is controlled by little process computer) by immediate action valve again, so the powerful fine adjustment of carrying out of flow reaches accurate greatly, fast and be that powerful energy is controlled.
This regulative mode also has similar device in traditional hydraulics, be called pressure regulator, but this traditional pressure regulator is only the pressure of controlling and adjust a small amount of in hydraulic tubing, can not be accurate and regulate fast very large power flow, very large power flow as: during the 50-200 kw of power, must make and regulate the hydraulic oil of energy storage canister into and out of air pressure and regulate timely with the quantitative relation of volume/time of 〉=4 cubic decimeters/each second/1 MPa/MPa speed, can reach accurate high-power control.
And the pressure maximum that this air pressure energy storage of the utility model cylinder of steel can bear is 45 MPas (450 kg/cm), pressure during work is only 1/3 of maximum pressure-bearing, i.e. 15 MPas (having guaranteed Security), in the power adjustments of 5-15 MPa, can regulate the power energy of 50-200 kilowatt in one minute, so be well-adapted in the wind power generating set of 50-200 kilowatt.
three, flywheel energy storage speed stabilization machine: when hydraulic oil arrives " oil motor ", pressure energy in liquid is converted to mechanical air horsepower output energy by oil motor and is connected with generator, produce electric energy, at oil motor with between generator is connected, we have installed a large-scale flywheel additional, because flywheel has energy storage, voltage stabilizing, the speed stabilizing characteristics, this technology is also a practical technique the most ripe, have simple in structure, with low cost, safety long-life, the particularly preferred characteristic of effect, this flywheel that we install additional herein, its rotating speed is also controlled and is regulated by little process computer, therefore the fluctuating range of power can be reduced greatly, can accomplish the wave range Zai of total output＜=1%.
Four, little process computer control technique: we are on the basis of traditional hydraulic pressure transfer technology, added little process computer control technique, make it to become a kind of brand-new precise hydraulic and regulate Transfer Technology, not only can keep the advantage of original conventional hydraulic technology, be to make the conventional hydraulic technology that change in essence arranged more.The utility model is to the huge change on traditional wind power generating set essential structure, at first be the pattern that does not re-use rigid mechanical transmission power, but to have flexible energy storage and the fluid power Transfer Technology of adjusting characteristics arranged, make the transmission of power that essential change arranged, not only make structure simpler, as: or else needed problem gearbox the more, simultaneously can be by accurate power adjustments, the wind energy utilization efficiency of wind power generating set is greatly enhanced, and the electric energy of output is very steady and is adjustable.Utilize the controlled hydraulic pressure transfer technology of this precision, the electric energy that more generator is sent presents the state of " steady, adjustable ", this state is the electric energy of the special harmony of welcoming of electrical network, should call and be " gold electricity ", owing to being the electric energy of controlling by little process computer, air pressure energy storage control and the effect of flywheel energy storage speed stabilizing are arranged again, so the low voltage crossing problem in fundamentally having stopped to be incorporated into the power networks.In addition, at some to the less demanding occasion of rotating speed, as: draw water, many occasions such as husk rice, fish pond oxygenation, shredder, all can be independently to turn round from net mode, also the extensive utilization for wind energy provides a kind of new mode.
it is little that the utility model has been broken through conventional hydraulic technology transmitted power, can not carry out at any time highi degree of accuracy and regulate larger power, as: transmit tens kilowatts, hundreds of kilowatt, several megawatts, on the basis that has solved high-power hydraulic intensifier, carrying out whole process by little process computer mode controls, the program that is arranged in microprocessor is carried out automatically automatically, supper-fast dynamic control, both simplified the structure, reduced cost, reach again best control effect, compare traditional hydraulics, this is the leap of an essence, a kind of intelligent hydraudynamic drive technology of novel concept especially.the utility model is because combine modern Computer Control Technology, air pressure energy storage technology and flywheel speed stabilizing technology, more adopted low speed superhigh power hydraulic intensifier, improved greatly original performance of traditional hydraulics, also can be described as innovated a kind of novel, high intelligence, the superhigh power characteristic, widely used fluid power Transfer Technology, in, use technique on Large-scale Wind Turbines, not only decrease cost, simplify the structure, improved the wind energy utilization efficiency of unit, also significantly improved the electric energy output characteristics of wind power generating set, transmitting wind power than original machinery type has surmounted a lot, the good harmonious performance that is incorporated into the power networks is not only arranged, also has good low voltage crossing performance, also show simultaneously good in net independent operating characteristic.
Description of drawings
Fig. 1 is structure principle chart of the present utility model;
Fig. 2 is the structural representation of air pressure energy storage canister of the present utility model;
Fig. 3 is the voltage stabilizing phase diagram of air pressure energy storage canister of the present utility model;
Fig. 4 is the output power phase diagram of air pressure energy storage canister of the present utility model;
Fig. 5 is the figure of power states that receives of air pressure energy storage canister of the present utility model;
In figure, 1-blade wind wheel; 2-low speed superhigh power hydraulic intensifier; 3-little process computer; 3.1-detecting head; 3.2-execution solenoid valve; 4-air pressure energy storage canister; 4.1-nitrogen; 4.2-hydraulic oil; 5-oil hydraulic motor; 6-flywheel energy storage speed stabilization machine; 7-generator.
Embodiment
50 kilowatts of omnidistance power hydraulic type low wind speed wind power generator groups:
Rotor diameter: 18 meters;
Wind-exposuring area: (swept area): 254.34 square metres of (values: every square metre of 200 ± 10% watts of wind energy densitys);
Output power: 50 kilowatts of (wind speed=8m/s; During 4-5 level wind);
Blade shape: aerofoil profile NACA4418 hangs down wind speed type aerofoil profile;
Blade quantity: 3;
Design rated wind speed: 8m/s(4-5 level wind);
Rated power: 50 kilowatts (maximum 85 kilowatts);
Actual power scope: output 10-30 kw of power during 3-7m/s wind speed (2 ~ level wind); Output 50 kw of power during the 8m/s wind speed; Output 85 kw of power during the 14m/s wind speed;
Start wind speed (incision wind speed) :≤3m/s;
Work wind speed: 3-20m/s; (carry out paddle along slurry and brake by hydraulic mechanism when the 14m/s wind speed is above, during 20m/s, wind wheel is by the hydraulic system shutdown of going off course)
Wind speed round: wind speed round 30-60 turns/and per minute;
Hydraulic low-speed supercharger speed: 25-80 turns/and per minute;
Output hydraulic pressure power: 20-90 kilowatt;
Hydraulic fluid pressure: 5-15 MPa;
Oil hydraulic motor power:＜=100 kilowatts;
Hydraulic motor rotary speed: 100-200 turns;
The auxiliary generator rotating speed: 100-200 turns;
Embodiment: 2
200 kilowatts of omnidistance power hydraulic type low wind speed wind power generator groups:
Rotor diameter: 38 meters;
Wind-exposuring area: (swept area): 1017.36 square metres (every square metre of 200 ± 10% watts of wind energy densitys);
Output power: 203.5 kilowatts of (wind speed=8m/s; During 4-5 level wind);
Blade shape: aerofoil profile NACA4418 hangs down wind speed type aerofoil profile;
Blade quantity: 3;
Design rated wind speed: 8m/s(4-5 level wind);
Rated power: 203.5 kilowatts (maximum 350 kilowatts);
Actual power scope: output 50-90 kw of power during 3-7m/s wind speed (2 ~ level wind); Output 203 kw of power during the 8m/s wind speed; Output 350 kw of power during the 14m/s wind speed;
Start wind speed (incision wind speed) :≤3m/s;
Work wind speed: 3-20m/s; (carry out paddle along slurry and brake by hydraulic mechanism when the 14m/s wind speed is above, during 20m/s, wind wheel is by the hydraulic system shutdown of going off course)
Wind speed round: wind speed round 20-40 turns/and per minute;
Hydraulic low-speed supercharger speed: 25-80 turns/and per minute;
Output hydraulic pressure power: 200-390 kilowatt;
Hydraulic fluid pressure: 5-15 MPa;
Oil hydraulic motor power: 200 kilowatts-390 kilowatts;
Hydraulic motor rotary speed: 100-200 turns;
The auxiliary generator rotating speed: 100-200 turns;
The above is only preferred embodiment of the present utility model, not in order to limiting the utility model, all any modifications of doing within uniqueness of the present utility model and principle, is equal to and replaces and improvement etc., within all being included in protection domain of the present utility model.
Claims (7)
1. the low wind speed wind power generator group of an intelligent superhigh power fluid power transferring power, comprise blade wind wheel (1), it is characterized in that described blade wind wheel (1) is connected with intelligent superhigh power fluid power delivery system, intelligent superhigh power fluid power delivery system is connected with generator (7).
2. the low wind speed wind power generator group of a kind of intelligent superhigh power fluid power transferring power as claimed in claim 1, is characterized in that described intelligent superhigh power fluid power delivery system comprises low speed superhigh power hydraulic intensifier (2), air pressure energy storage canister (4), flywheel energy storage speed stabilization machine (6), oil hydraulic motor (5) and little process computer (3).
3. the low wind speed wind power generator group of a kind of intelligent superhigh power fluid power transferring power as claimed in claim 2, it is characterized in that blade wind wheel (1) is connected with low speed superhigh power hydraulic intensifier (2), low speed superhigh power hydraulic intensifier (2) is connected with air pressure energy storage canister (4) bypass in parallel, air pressure energy storage canister (4) is connected in parallel with oil hydraulic motor (5), oil hydraulic motor (5) is connected with flywheel energy storage speed stabilization machine (6) axle, flywheel energy storage speed stabilization machine (6) is connected with generator (7) axle, between blade wind wheel (1) and low speed superhigh power hydraulic intensifier (2), between low speed superhigh power hydraulic intensifier (2) and air pressure energy storage canister (4), air pressure energy storage canister (4) upward and on oil hydraulic motor (5) is respectively arranged with detecting head (3.1), described detecting head (3.1) is connected with the input end of little process computer (3) respectively, on air pressure energy storage canister (4), between low speed superhigh power hydraulic intensifier (2) and air pressure energy storage canister (4), be respectively arranged with between air pressure energy storage canister (4) and oil hydraulic motor (5) and carry out solenoid valve (3.2), described execution solenoid valve (3.2) is connected with the output terminal of little process computer (3) respectively.
4. the low wind speed wind power generator group of a kind of intelligent superhigh power fluid power transferring power as claimed in claim 2, the speed range that it is characterized in that described low speed superhigh power hydraulic intensifier (2) work be 5-20 turn/per minute, its output power range is 20-2000 kilowatt.
5. the low wind speed wind power generator group of a kind of intelligent superhigh power fluid power transferring power as claimed in claim 2, it is characterized in that described air pressure energy storage canister (4) is a steel circular cylindrical tank body, its volume is the 0.2-5 cubic meter, top in air pressure energy storage canister (4) is that purity is 99% nitrogen, the shared volume of nitrogen is the 1/2-1/3 of whole tank body volume, bottom in air pressure energy storage canister (4) is liquid, as hydraulic oil, alcohol, antifreeze liquid, pure water, emulsified liquid etc., preferred hydraulic oil, the range of working pressure of air pressure energy storage canister (4) is the 5-15 MPa, the stored energy scope is 50-2000 kilowatt/power per minute.
6. the low wind speed wind power generator group of a kind of intelligent superhigh power fluid power transferring power as claimed in claim 2, it is characterized in that described flywheel energy storage speed stabilization machine (6) is that an outside diameter is that 800-1200 millimeter, width are the former type flywheel of 30-40 millimeter, made by the cast iron materials that weight is the 800-2000 kilogram, the stored energy scope is 50-200 kilowatt/power per minute, flywheel energy storage speed stabilization machine (6) carries out precision adjustment to the fluctuating power automatic immediate on pto＝power take-off, reaches total output fluctuation ratio≤1%.
7. the low wind speed wind power generator group of a kind of intelligent superhigh power fluid power transferring power as claimed in claim 2, it is characterized in that described little process computer (3) is according to the size of wind-driven generator power stage situation, to the fluid pressure that produces, flow is surveyed sampling timely, operation amplifier, and provide actuating signal, the output control signal, control the executive system of servo unit and immediately carry out the solenoid valve action, whole hydraulic system is carried out at any time, fast, accurate, high-power adjusting, reach the performance of high standard output total output, make the wave range of power in 1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205541626U CN203009171U (en) | 2012-10-26 | 2012-10-26 | Low wind speed wind generating set of intelligent superpower hydraulic transmission power |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012205541626U CN203009171U (en) | 2012-10-26 | 2012-10-26 | Low wind speed wind generating set of intelligent superpower hydraulic transmission power |
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| CN203009171U true CN203009171U (en) | 2013-06-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900625A (en) * | 2012-10-26 | 2013-01-30 | 浙江日月昇科技有限公司 | Intelligent ultrahigh power hydraulic power-transferring low-wind-speed wind generating set |
| CN103670940A (en) * | 2014-01-08 | 2014-03-26 | 洛阳飓鸿环保技术有限公司 | Energy conversion generating device |
| CN107816408A (en) * | 2017-11-14 | 2018-03-20 | 刘洪听 | A kind of hydraulic water power TRT |
-
2012
- 2012-10-26 CN CN2012205541626U patent/CN203009171U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900625A (en) * | 2012-10-26 | 2013-01-30 | 浙江日月昇科技有限公司 | Intelligent ultrahigh power hydraulic power-transferring low-wind-speed wind generating set |
| CN102900625B (en) * | 2012-10-26 | 2015-09-30 | 浙江日月昇科技有限公司 | A kind of low wind speed wind power generator group of intelligent superhigh power fluid power transferring power |
| CN103670940A (en) * | 2014-01-08 | 2014-03-26 | 洛阳飓鸿环保技术有限公司 | Energy conversion generating device |
| CN107816408A (en) * | 2017-11-14 | 2018-03-20 | 刘洪听 | A kind of hydraulic water power TRT |
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