CN103244356A

CN103244356A - Circular air duct fan-made wind, wind wheel, wind flow diverter and wind driven generator set

Info

Publication number: CN103244356A
Application number: CN2013101332616A
Authority: CN
Inventors: 吴章兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-04-17
Filing date: 2013-04-17
Publication date: 2013-08-14

Abstract

The invention discloses circular air duct fan-made wind, a wind wheel, a wind flow diverter and a wind driven generator set. Wind power generation in China comes from water-carrying windmills, mini-type wind driven generator sets have been studied since the late 50's, more than one hundred years ago, the reasons why wind driven generator sets cannot achieve great development at present lies in 1), inland areas are lack of wind sources and the wind sources are not stable, while the wind sources in coastal areas are high in cost; 2), stand columns are required to be over 60 meters high in upper air; and 3), stability of generated electricity is poor and the like. The circular air duct fan-made wind, the wind wheel, the wind flow diverter and the wind driven generator set are simple, economic and practical in structures and can solve many problems of the wind driven generators. The wind sources can be produced by the circular air duct fan-made wind, a medium air duct is 60 meters in the inner diameter, and 400-500 meters in length and width, wind speed generated is 10-25m/s, the wind speed can be regulated by quantity of electricity, and wind direction is slow in variation and strong in duration when operated circularly in parallel. The wind wheel has conventional three-blade loading mode, 56 generators can be mounted in one medium air duct, the wind direction and wind power are stable and free from outside influence, and can produce strong and stable current.

Description

Circulation air path blower fan self-control wind, wind wheel, wind direction fluid director, wind-driven generator combination

Technical field

The present invention relates to a kind of artificial self-control wind regime, especially produce wind energy by blower fan and circulation air path.

We can be rated as " energy epoch " the residing epoch now, if there is not the energy, can't imagine simply in " energy epoch " at us, the world energy sources structure is based on fossil energy, and through human development and use, the present energy becomes fewer and feweri, not only pollute to environment, human long term growth is brought adverse influence, thus now all at renewable, the cleaning of exploitation, pollution-free new energy, as: renewable energy sourcess such as wind energy, water energy, solar energy.

People begin to utilize wind-force to show wind direction in ancient times, or utilize wind-force to navigate, or utilize the wind wheel irrigation by pumping, or utilize wind wheel to inhale preparing salt by working up seawater, and developed country has obtained great achievement in technical field of wind power generation in recent years, and the unit that generates electricity by way of merging two or more grid systems can reach 5 MW class.

Wind-power electricity generation primarily is that wind is arranged, and the advanced person is also useless again not have the wind technology.The uncertainty of wind is a lot, greatly sometimes little sometimes, and south is northern sometimes sometimes, brings very big resistance to wind-power electricity generation, and is not high to the wind utilization ratio.If by 60 meters of diameters, length and width each 500 meters with the circle air channel, keep flat and utilize blower fan to blow wind regime on the ground, can produce the wind of 10-25 rice/s.Overcome in the past wind-power electricity generation and relied on the high end of natural airflow to produce wind energy fully, artificially produced and stablize the wind energy that to regulate certain strength, and this wind energy is used for generating electricity;

Background technique

Now wind-driven generator is varied, but concludes to get up can be divided into two classes: 1. horizontal axis wind-driven generator, and the running shaft of wind wheel is parallel with wind direction; 2. vertical axis aerogenerator, the running shaft of wind wheel is perpendicular to ground or airflow direction.

In recent years, the wind-power electricity generation mainstream model mainly contains three kinds: cage modle double speed pole-changing asynchronous generating unit, Wound-rotor type double-fed asynchronous generator group and permanent magnet direct-drive synchronous generator unit.

Highlight below: 48V-750KW fixed pitch wind power generating set.

Rotor diameter: the 47M rotating speed 22.5rpm number of blade 3

Incision wind speed: 4m/s rated wind speed: 14-15m/s cut-out wind speed: 25m/s extreme wind speed: 70m/s blade end linear velocity: 57m/s

Gear progression: one-level parallel axes/helical teeth transmission

Gear transmission ratio: 1:67

Rated power: 750KW 1520-1600/min

Braking system: 2 mechanical brake locks of 3 blade tip aerodynamic brakes of primary brake system secondary brake system high speed shaft

Control system: the control apparatus centered by programmable controller (PLC) and the soft controllable silicon TT430N/22 that is incorporated into the power networks

These several wind-driven generators all need column to rise up into 50-60 rice high-altitude to carry out wind-power electricity generation, just can generate electricity by way of merging two or more grid systems, but wind-force has been lower than wind speed off-grid dead halt;

Summary of the invention

Wind be cannot see, can not touch, can see waving of flag in daily life, branch to wave sensation when running with the people facial chilly etc., these all are a kind of embodiments of wind, we know that atmosphere has pressure, and atmospheric pressure is different in each place, different air will flow to local this air at the bottom of the air pressure from the high place of air pressure and flow and just produced wind, will why wind arrives certain distance be imperceptible? that is that it just has resistance itself because of wind, its limited wind-force is stopped that by air wind just scatters, so will produce bigger wind, certain space and bigger power will be arranged, could produce wind.

Wind has resistance, will scatter to certain distance, why that build into circle and just can utilize wind to generate electricity, and in the air channel? this will mention resistance and dynamic relation, in people's cognition, windage has versatility, realize flying to the dream in blue sky with windage, also useful windage is reduced speed etc., it also has effect is that we are unexpected, through my examining, find in fact windage in the certain space certain speed it can change into power, can change into power, just can be utilized by people, finally generate electricity, why resistance becomes power at last, lift a simple case: in people's daily life, everybody gets up to wash one's face and will use washbowl and be filled with water morning, sometimes the water circle of looping is changeed in the washbowl with hand, the model that water changes when beginning to change is moving of less changeing of rarer little slight drag, that will be very light more and more sooner after you change a full circle all water all have been driven speed, your speed is slow water also can drive conversely your hand has very big thrust, and you do not rotate it and can circulate to last long yet and just can stop.Air separates with extraneous windage when you drop it off in the sealing air channel too, blowing all wind of drive with blower fan circulates, when all just can there be very powerful windage in wind when mobile, be little competing with one another of will not stopping of such wind of having exhaled its little some resistance that can scheme slightly to disregard, the windage that is applied on the wind wheel when wind process wind wheel can be omitted by figure, because of after the pressure difference process 10-25 rice that passes through wind is apart from acceleration, can become strong wind energy again generates electricity driving next wind wheel, circulate with this, that has just easily held to have had the wind energy that circulates to generate electricity.

One, air channel design proposal: (Fig. 1)

Air channel rounded lower portion semicircle, available reinforced concrete comes casting mold (also can finish with reinforced concrete overall time casting mold) thickness 50-70 centimetre, semicircle above the air channel is built with the iron plate of steelframe and 3-4mm thickness in top, so just form circular air channel, the air channel can be divided into three kinds of specifications, can determine according to the diameter length and width:

Small-sized air channel: diameter 20-40 rice (internal diameter) length and width 200-300 rice

Medium-sized air channel: diameter 40-60 rice (internal diameter) length and width 300-500 rice

Large-scale air channel: diameter more than 60 meters (internal diameter) length and width more than 500 rice

Introduce the sample of laying of medium-sized air channel, whole blower fan processed, wind wheel, fluid director below:

Generator: (Fig. 1-1)

Fluid director: (Fig. 1-2)

Blower fan processed: (Fig. 1-3)

Air channel inner diameter: 60 meters (generating district) (Fig. 1-4)

Air channel inner diameter: 64 meters (anallobar) (Fig. 1-5)

Air channel inner diameter: 62 meters (wind processed district) (Fig. 1-6)

Air channel length and width: 500 meters.

Two, wind wheel design proposal: (Fig. 2)

I am thinking that generator is whole day 24 hours when originally designing blade, the work that did not stop in 365 days, if to the sealing the air channel in that generator fault has appearred, duct space is limited, can not load onto very big column as outdoor windmill, the people can climb up from the centre.For reducing the resistance in the air channel, column is just only done small-sized keeping flat in the middle of the air channel, so I just want to continue with easy to maintenance.Finally be designed to the power that produces on the wind wheel, be connected to booster engine outside the air channel with axle and planetary pinion, after the speedup at the running fire electric power generation.Because design is complicated mechanical part easy care very not in the wind turbine nacelle like this, can be not too fast because of wind wheel, the resonance that speedup is brought in the cabin and load are excessive and cause great mechanical failure, namely working efficiency good, just safeguard, the actual benefit height;

(Fig. 2-1) wind wheel

(Fig. 2-2) cabin

(Fig. 2-3) parallel cylinder is wind wheel fixedly

(Fig. 2-4) drive bearing

(Fig. 2-5) speed increaser and generator

(Fig. 2-6) wind-guiding angle, parallel cylinder windward side.

Three, fluid director design proposal: (Fig. 3)

The effect of fluid director is that front wind is dredged into parallel wind energy through the sinuous flow that produces behind the wind wheel, can better be applied to produce bigger power on the wind wheel, and the size of grid can change density according to actual conditions, and design proposal is 2.5*2.5*1 rice:

(Fig. 3-1) fluid director front view

(Fig. 3-2) sectional drawing.

Four, fluid director and wind wheel quantity installation method: (Fig. 4)

The quantity of wind wheel is to decide according to the length in air channel, wind wheel and wind wheel are every one in 25--30 rice, fluid director is installed between the wind wheel, fluid director of 2-3 platform (Fig. 4-1-2), not well to be applied on the wind wheel to such an extent as to the unrest that causes when blowing over wind wheel because of wind energy is distinguished and admirable, the indirect quantity of fluid director can be installed by actual conditions;

Five, the design in wind processed district: (Fig. 5)

Wind processed district is the key in this air channel, it can produce great wind, great pressure, after wind enters generating district back wind speed can reach for how many rice/s, can generator full load operation, just entirely in this wind processed district: the diameter shown in figure (figure 612 3), wind in She Ji effect is to keep watch like this increases pressure, make blast energy each impeller of process at a high speed, it is the efficient height, the effect of air channel suction port is to be at fan starting, because the barometric pressure in the air channel is the same with the air pressure of outside, the intake grill that the angrily pressure reduction that brings when preventing that blower fan from running up designs, stablize when saturated Deng the air channel internal air pressure, just can close intake grill and prevent that air-flow is run out in the air channel, can also be used as relief opening;

Blower fan wind processed district inner diameter: 62 meters (Fig. 5-1)

Diffusion zone inner diameter: 64 meters (Fig. 5-2)

Anallobar inner diameter: 60 meters (Fig. 5-3)

But switch intake grill: 1*1 rice (Fig. 5-4)

Above size can be decided according to actual needs.

Six, the installation of blower fan and design: (Fig. 6-7)

Axial-flow blower is formed triangle by three in the air channel, has the distance of 0.5-1 rice that barge board is installed between each blower fan, and barge board is made of circular eight symmetrical triangles.Blower fan is to run up throughout the year, be convenient to safeguard and maintenance, add barge board in the blower fan front, that machine has and can rise barge board unusually and keep watch and separate, the staff just can remove to check the fault machine, not only can not cut off all blower fans in the air channel but also can go maintenance, can directly not cause economic loss because of maintenance;

Three blower fan ssembly drawings processed (Fig. 6-1)

Blower fan and barge board section (Fig. 6-2)

Single barge board motion state diagram (Fig. 7-1)

Dynamically scheme between barge board and the blower fan (Fig. 7-2)

Overall wind shielding plate closing figure (Fig. 7-3)

Hydraulic rod (Fig. 7-4)

Complicated because of large-scale air channel, we in use obtain experience because building from little, medium-sized air channel, and then carry out the construction of large-scale air channel.

The lifting of wind wheel blower fan can be reserved the passage that can enter by large-scale sling cart in air channel bottom, because the reinforced concrete that at the bottom of the air channel is the 50-70 centimetre builds up enough wide inner diameter, large-scale sling cart can be worked fully normally, and the wind wheel upper blade can blocks of lifting get on to install.

Debugging before the generating: 1 checks earlier electrical wiring system connects whether problem is arranged; 2 debug again hydraulic system whether working properly, have and do not have leakage of oil; Whether 3 blower fans processed and wind wheel be flexible, and it is loosening whether immovable point has; Can whether 4 debugging blower fan processed runs well, realize the mode of acceleration and deceleration.Whether 5 brakings are normal with piece-rate system; The wind speed test 1-2 platform generator of 6 usefulness 3-6M/s, wheel rotation and no abnormal situation can increase wind speed, slowly adjust to generator and reach 2000kw, try out for a long time then, no abnormal situation in two to four days can be carried out the Installation and Debugging work of next blower fan group;

Description of drawings

Air channel design proposal: (Fig. 1)

Wind wheel design proposal: (Fig. 2)

Fluid director design proposal: (Fig. 3)

Fluid director and wind wheel quantity installation method: (Fig. 4)

The design in wind processed district: (Fig. 5)

The installation of blower fan: (Fig. 6)

Barge board design: (Fig. 7)

Claims

Circulation air path blower fan self-control wind

Round half construction in air channel is to subsurface, produce wind by blower fan, wind blows with blower fan in the oblong air channel, circulation back and forth, artificially make the circulation wind regime, stablize strong wind energy and produce, to overcome in the past that wind-power electricity generation relies on natural wind field to generate electricity fully, to produce method and the technology of the wind that is used for generating electricity by circulation air path and blower fan.
Wind wheel

The power of wind wheel generation produces electric energy via epicyclic gearbox with speed increaser and the generator that axle is connected straight outside, and minimizing speedup in the cabin is brought and resonated with the overburdening influence so that driving, the fixedly resistance of installation wind-guiding angle minimizing wind on the parallel cylinder of wind wheel.
The wind direction fluid director

Wind can cause wind energy sinuous flow phenomenon through behind the wind wheel, can not equidirectionally all be applied to next fan blade, and this wind direction fluid director in order to being adjusted to parallel wind regime, is the next wind wheel more kinetic energy of taking.
By above 1,2,3 a whole set of electricity-generating methods that content combines, the present invention relates to a kind of artificial self-control wind regime, its characteristic is to produce the generating wind energy by blower fan and circulation air path, its easy care simple in structure, solved the difficult point of many wind-power electricity generations: 1. the source of wind can produce wind energy by circulation air path and blower fan, wind speed may be adjusted to 10-25m/s and wind regime is stable, being subjected to extraneous windage is zero, the endurance direction of strong wind is not parallel but whole day did not stop to blow in 24 hours, 2. the strength of the big drive generator in wind-engaging blade face is big in the air channel, speed is fast, 3. in a medium-sized air channel many generators (how much quantity this installation can determine by actual length and width) can be installed, its generator installation total amount can reach 112000KW.