CN86201785U

CN86201785U - Duct for aero-generator

Info

Publication number: CN86201785U
Application number: CN198686201785U
Authority: CN
Inventors: 李玉琢
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-04-01
Filing date: 1986-04-01
Publication date: 1987-09-12

Abstract

The utility model relates to a wind gathering net type wind passage for an aerogenerator. The utility model gathers the wind of which the is larger than that of the surrounding atmosphere mainly by a wind cylinder tower, a wind gathering wall, a vault head, a wind door with multiple leaves, a multi-purpose earth surface, a champaign and an underlaying surface with high wind velocity to drive 96 aerogenerators which are arranged on the multi-purpose earth surface to generate electricity.

Description

Duct for aero-generator

The utility model relates to a kind of wind-driven generator, particularly relates to a kind of wind-focusing net style wind-driven generator air channel.

The prior art data in reflection wind-focusing net style wind-driven generator air channel is: in (1), the 4th phase of nineteen eighty-three " new energy " " northwest Europe four countries Wind Power Utilization investigation report " literary composition one section---hot air flow rising power plant device.(2), 1985 the 5th phases " new energy " " one 650 a feet high wind power generation stepped " literary composition.(3), second problem in 1985 the 10th phases " scientific experiment " " the two kinds of brand-new solar setups " literary composition.(4), 1986 the 1st phases " science 24 hours " " wind-force legend " literary composition.

The prior art data in above-mentioned reflection wind-driven generator air channel is summarized as follows:

In the hot and arid Madrid of Spain, a cover " hot air flow rising power plant device " has been built in examination.Begin trial run January nineteen eighty-two.There are one 200 meters high, the wind tower of 10 rice diameters in the center.What wind tower wall was used is Galvanized Steel Corrugated Sheet.Around the wind tower, constructed the garden shape greenhouse of 500 meters of diameters.The greenhouse is made of several light steel frames of 20 square feet, props up the jail with some pillars; Auxilliaryly on the steelframe be covered with transparent plastic film, use lanyard, support is at 2 meters height overhead.Surface soil is dark, and heat-retaining is better.When the plastics ceiling was crossed in the sunlight transmission, heated air in the greenhouse along the air channel, rose through the wind tower bottom that opens wide again, forms powerful rising hot air flow, had driven one 100 kilowatts the propeller generator generating that is installed in the wind tower bottom.Can move round the clock.To morning next day, still can provide 20% of peak value electric power.

This engineering, expensive 3,550,000 marks.It is calculated that when the tower of keeping watch was increased to 900 meters, cost can be reduced to 1 kilowatt of electricity 2000 mark.

Calculating shows that along with the increase of this device, generated output also will improve.In arid barren land, construction one cover generating capacity is 500,000 kilowatts a this device, solar energy collecting greenhouse with 10 kilometers of 1000 meters high, 500 meters thick Feng Ta of needs and diameters, hot air flow stream scooter 20～60 meter per seconds, the wind tower bottom is equipped with 7 propeller generators.

This device is that the principle of known solar energy greenhouse, wind energy conversion system and chimney is combined consideration.

Need key issue to be solved to be: is what thin polymer film optimum? the transparency that how under the situation that dust is assembled, to keep film.

The subject matter that Spain's " hot air flow rising power plant device " exists, except above-mentioned " what thin polymer film is optimum? how in the transparency that keeps film under the situation that dust is assembled ", is also existing main problem: in homalographic, how to assemble bigger wind-force? more wind energy conversion system is installed? send more? how does many-side make full use of wind energy? how to reduce cost?

The purpose in wind-driven generator air channel is to overcome the problems referred to above.

According to the statistics that is distributed in 30 provinces of China, municipality directly under the Central Government, autonomous region's part (294) meteorological station, stands, the meteorological station of annual mean wind speed between 2.2～4 meter per seconds, stand 220, between 4.1～6.0 meter per seconds 60, between 6.1～7.3 meter per seconds 10, between 9.0～11.7 meter per seconds 3.According to this statistics (see for details and open 11～18 pages of " wind energy conversion system " books that first-class writes), as can be seen, China overwhelming majority areas are to hang down the wind speed area.Therefore, how to concentrate wind-force? be that China utilizes one of significant problem of wind energy.

The wind-driven generator air channel is compared with " hot air flow rising power plant device ", except wind-driven generator has centre of gravity, no pylon, manageable maintenance, is not subjected to several common advantage such as sleet frost and dew etch, the advantage that also has following uniqueness: can assemble wind from all directions in the wind gathering net effective coverage, same homalographic, wind-force is bigger, improves 10 times than ambient atmosphere wind speed is the highest.In the shape area of the garden of 250 meters of diameters, rotor diameter can be installed be 8～10 meters 96 of horizontal axis wind-driven generators, to take up an area of fewly, total output is big.Main by open and close " multipage air door ", can reconcile the wind speed in the whole air channels of whole wind gathering net; Can reconcile the rotating speed of wind-driven generator in whole air channels; Can prevent the destruction of storm wind.Therefore, many-sided, utilized wind energy on a large scale, expeditiously.Cost of electricity-generating is lower than thermal power generation significantly.It not only is applicable to the concentrated wind-power electricity generation of China's vast low wind speed area large size, also is applicable to the concentrated wind-power electricity generation of the vast low wind speed of world many countries area large size.

Contrast accompanying drawing, can more be expressly understood the content in wind-driven generator air channel:

Fig. 1 is a wind-focusing net style wind-driven generator air channel sectional view.

Fig. 2 is a wind-focusing net style wind-driven generator air channel plan view.

1 is the air duct tower among the figure.Atmosphere is the troposphere near the one deck on ground around the earth.Tropospheric temperature reduces along with the increase of height.Warm air is done ascending motion, and adjacent colder air sinks to replenishing.Utilize the proportion difference of these two, the air duct tower can produce " suction draught ".250 meters of air duct tower heights.At the hypomere of air duct tower below 16 meters, 12 meters of internal diameters, 2 meters of wall thickness, 16 meters of external diameters.More than 16 meters, the air duct wall is the galvanized steel plain sheet of two sides japanning in the distance ground level.The air duct tower can be built De Genggao, and is high more, and suction draught is big more, and generated output is big more, do not increase floor space; But the construction difficulty is also big more.The air duct tower can be built lowlyer again, and low more, suction draught is more little, and generated output is more little, and the construction difficulty is also more little.

2 is long wind gathering walls among the figure.Around the air duct tower, the 16 stifled long wind gathering walls of building together, specification is all identical.Whenever stifled long 117 meters, high 16 meters.With coal smoke ash brick, mortar and reinforced masonry.When not having coal smoke ash brick or the building block of coal smoke ash, available common brick replaces, and brush one deck solar absorptance is higher than the coating of materials for wall on the metope.The effect of long wind gathering wall: 1, wind gathering.2, the arrangement of reinforcement in the wall supports wind gathering net top cover; Near the arrangement of reinforcement of air duct tower outer wall, also can be used for supporting the air duct tower.3, on the wall water channel is arranged, there is water pipe the wall outer end, can arrange to rush down rain, the snow-broth that flows down from top cover.4, give within the walls and reserve electric path etc.

3 is short wind gathering walls among the figure.From the outer end of long wind gathering wall inwards, every a stifled long wind gathering wall, build a stifled short wind gathering wall again, it is 16 stifled to build together, and specification is all identical.Each stifled long 60 meters, high 16 meters.The material and the effect of short wind gathering wall, except not being used for supporting the air duct tower, identical with long wind gathering wall.

The main effect of long wind gathering wall and short wind gathering wall is wind gathering.Why can it be by calm poly-little wind, by the poly-strong wind of little wind?

1, the directed wind density height of wall guiding, flow velocity is fast.If it is wind flows through between two walls, bigger than the directed wind of wall guiding.The same greatly just as gateway opening with wind in the valley.The wind speed of mountain range overflow lip or both sides, valley usually can reach 10 times of ambient atmosphere wind speed.

2, the string distance between two walls,, shorter and shorter from the outer end to the center.Wind speed between the wind gathering wall is a subsonic speed.When gas is done subsonic flow, the inversely proportional variation relation in speed and cross section, promptly speed slows down with the increase in cross section, reducing and quicken with the cross section.Because the inner end of long wind gathering wall tightly links to each other with the outer wall of air duct tower, wind enters the air duct tower from the multipage air door, converges mutually with " suction draught " of air duct tower self again.

3, the solar absorptance of wind gathering walling material is higher, for the air in the heating wind gathering net, impel hot air flow to rise in the air duct tower and increase wind-force, plays part effect.Metope is level and smooth, has reduced resistance of air.

Long wind gathering wall and this special wind gathering effect of short wind gathering wall along with the prolongation of wall, increase and increase, reduce along with the shortening of wall, reduction.Here, it no longer has been common wall, but 32 without power, cheap, " increasing blower fan " that power is bigger.

4 is vault heads among the figure.4 meters of vault head rises are supported on the wind gathering wall arrangement of reinforcement with light steel frame.Reduce the shade of steelframe as far as possible, increase the solar radiation area, reduce the resistance of wind.For example: use the garden steel, resistance of air is just smaller.Steelframe surface cover layer of plastic film is fixed with the rope network.Here the plastic pellicle of usefulness will use transmittance, fluorine resin that anti-weather is good to make; Also can be with the poor slightly but making such as low-cost acrylic resin, polycarbonate resin, polyester resin of anti-weather.Plastic pellicle is crossed in the sunlight transmission, can improve the temperature of air-flow in the air channel and increases wind-force.

5 is multipage air doors among the figure:

Introduction according to " wind energy conversion system " book 260-262 page or leaf " whirlwind type wind turbine " of publishing in 1979 joint of the first-class works of opening, U.S. James, her grace propose a kind of brand-new wind-power electricity generation imagination: utilize vortex that is similar to tornado and the garden shape tower that produces this vortex, the wind energy of surrounding space is put together effectively." whirlwind type wind turbine " is by the garden tower set wind energy of a fixing open-topped.Be covered with vertical elongated slot on the tower side wall of garden, adjustable vertical plate is housed on the elongated slot.Adjustable vertical plate is an opening in that side of facining the wind, and wind can enter; In that side of leeward is closed.Enter wind in the tower by the opening elongated slot,, form vortex, and move upward with respect to the rotation of tower center.At the bottom of tower, adorn a turbine, a typhoon power generator is installed below turbine again.

But " whirlwind type wind turbine " remains one " imagination " so far, also do not become to be suitable for practical technological scheme.And in 1986 the 8th phases " new energy " " following wind energy converter " literary composition, write: " ... the conventional wind-energy changing system that equates with capacity is compared, the construction investment of whirlwind tower, and substantially exceeding its output energy increases the economic benefit that is obtained.”

Ground under the air duct tower is than 4 meters of the ground levels on wind gathering wall outer end edges edge.Under the air duct tower more than the ground, in air duct tower wall around, even identical " the multipage air door " 16 of installation specification.Only 15.5 meters of each multipage air door height overalls laterally section, and evenly are divided into 8 wickets again.Under the condition that does not influence the load-bearing of air duct tower, air door is wide more good more.Air door fan material aluminum alloy.For make the wind that enters in the air duct tower all the clockwise direction rotation upwards, door-hinge all is installed in the left side that enters air duct tower central direction, and is open inward, outwards closes.For load-bearing, can not surpass the inwall of air duct tower in order to make air door after the expansion, air duct tower wall will have suitable thickness.The vertical center line of each air door is over against the vertical center line of each short wind gathering wall.The door of the direction of facining the wind is opened with the wind automatically, and the door of leeward closes with the wind automatically; Also artificial open and close.Enter the wind in the air duct tower, form with respect to tower center rotation vortex upwards, speed is more and more faster.When wind greatly to will be the time above the load of wind energy conversion system, the wicket on the multipage air door of direction is down with the wind closed several, until Close All.

Hispanic " hot air flow rising power plant device " do not have the multipage air door.The multipage air door is compared with " adjustable vertical plate " in " whirlwind type wind turbine " imagination, the main difference point is: (1), multipage air door are as the part in the wind-focusing net style wind-driven generator air channel, be installed in the air duct tower hypomere wall, make heightening of wind to aspect wind gathering wind-force within the walls, increase the needed air quantity of a lot of platform wind energy conversion systems here, gross generation is big." adjustable vertical plate " in " whirlwind type wind turbine " imagination can only increase a needed air quantity of wind energy conversion system that is installed in the turbine below, and gross generation is little.(2), be divided into 8 little air doors again on a multipage air door, mainly, can reconcile the wind speed in the whole wind gathering net, can reconcile wherein all rotating speeds of wind energy conversion systems, and make whole wind-driven generators exempt from the destruction of storm wind by the little air door of open and close what.These effects of multipage air door, " adjustable vertical plate " all do not have.(3), in the wind-focusing net style wind-driven generator air channel 96 (or more than 96, or be less than 96) wind energy conversion systems, a public cover multipage air door, than the adjustable vertical plate of a cover in the imagination only for a wind energy conversion system with (though rotor diameter is big), cost is much lower.In addition, the multipage air door can also be current for the staff.

6 is to use ground more among the figure.Ground in the wind-focusing net style wind-driven generator air channel between the wind gathering wall all is to use ground more.Many material, constructions with ground, though the same with petroleum tar concrete highway, here, it has but converted " using " ground to more: (1), it can gather strong wind by little wind.This be because: its storage heating rate height; The high gradient big (ground under the air duct tower is higher 4 meters than the ground of wind gathering wall outer end) in its outer hanging down; The narrow ratio of its outer width is big; Its surface smoothing; " suction draught " of wind energy that it gathers and air duct tower self converges mutually.(2), it can work as the artificial foundation that wind energy conversion system is installed.(3), it can work as track usefulness.(4), in order to reduce the resistance of wind, for safety and make full use of on the ground, underground, use subsurface more, build the tunnel, underground article can be buried, be left in to pipe laying everyly underground for a long time or temporarily, all will bury, leave in below ground underground.(5), it is waterproof, non-conductive, etches such as acid and alkali, alkali, salt.(6), its dust is few, the plastic pellicle on wind energy conversion system, the vault head etc. polluted few.Ground in Spain's " hot air flow rising power plant device " is dark soil face, except cost is low, all less than above-mentioned many with in the ground listed 1,2,3,5,6.

In order to gather strong wind, in wind gathering wall outer end to open ground preferably, big as far as possible ground, outside.

In order to gather strong wind, in wind gathering wall outer end to big as far as possible ground, the outside bigger underlying surface of wind speed preferably.For example: the stiff mud that nobody cultivates smoothly.The low stalk crops of plantation.Herd every year on dark meadow, or cut twice.

From generated energy greatly, wind-focusing net style wind-driven generator air channel should be based upon that wind speed is big, the place of unstable airflow.From electricity consumption need, wind speed is little, unstable airflow or unsettled wide geographic area more should be set up, and also can set up.To be based upon the place that systematic survey is crossed wind conditions to it.Be based upon firm place, installation basis.Plain, hilly ground, grassland, mountain area can be set up.Different with the electricity consumption requirement according to human and material resources, financial resources, geographical conditions, its scale can enlarge or dwindle.

7 is wind energy conversion systems among the figure.The outer end of long wind gathering center line of wall in the wind-driven generator air channel, outer end to adjacent short wind gathering center line of wall, 24.55 meters of chord lengths, many between the two stifled long wind gathering walls with ground on, can test the hypotelorism of wind energy conversion system to 1～2 times of wind wheel, by shortening to 2 times of calculating, between two long wind gathering walls and the short wind gathering wall, can the trial assembly rotor diameter be 8～10 meters 6 of horizontal axis streaming wind energy conversion systems, install 96 altogether.The wind gathering wall is long more, and the wind energy conversion system of installation is many more.

On 16 stifled long wind gathering walls and 16 stifled short wind gathering walls, respectively stay a sewer main (Fig. 8 A), the water that flows down on the vault head plastic pellicle flows into the water channel that closes on direction of fall, flows in the water pipe vertically downward of wall outer end again.For row is rushed down the rain, the snow-broth that get off from the air duct cat head,, down to the wall outer end, stay a sewerage (Fig. 8 B) again through the ground between the wind gathering wall from the air duct tower bottom.

9 is wall doors among the figure.Current for the ease of staff and dolly, stay a wall door in the center of each stifled long wind gathering wall, stay 16 altogether.

Claims

A kind of wind-focusing net style wind-driven generator air channel, by vertical air duct tower, around the air duct tower diameter to the wind gathering wall of even cloth, on the described wind gathering wall vault head, the multipage air door of described air duct tower bottom, whole many between the wind gathering walls with ground, open ground, underlying surface and wind-driven generator are formed preferably.It is characterized in that: described air duct tower is the galvanized steel plain sheet of two sides japanning; Described long wind gathering wall 16 blocks up totally, whenever stifled center is provided with the wall door, per two stifled long wind gathering wall center outer radial have been arranged a stifled short wind gathering wall, totally ten six is stifled, brushed the coating that one deck solar absorptance is higher than materials for wall on the described wind gathering metope, described vault head supports with light steel frame, one deck fluorine resin or acrylic resin or polycarbonate resin or polyester resin plastic pellicle have been covered on it, described multipage air door is made with aluminum alloy, open inward, outwards close, described many be asphalt concrete pavement with ground, outer low in height, outer width is narrow, described open ground, be that wind gathering wall outer end is the open ground to big as far as possible ground, outside, described underlying surface preferably is that wind gathering wall outer end is the bigger underlying surface of wind speed to big as far as possible ground, outside, described wind-driven generator is the horizontal axis streaming, installs six between the per two stifled long wind gathering walls.