CN101660308A

CN101660308A - Method and device for wind prevention and sand fixation by wind power static electricity

Info

Publication number: CN101660308A
Application number: CN200810146971A
Authority: CN
Inventors: 李泽唐
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-08-29
Filing date: 2008-08-29
Publication date: 2010-03-03
Anticipated expiration: 2028-08-29
Also published as: CN101660308B

Abstract

The invention provides a method and a device for wind prevention and sand fixation by wind power static electricity. The device continuously accumulates high voltage positive charges by using direct current generated by wind power to achieve the method for the wind prevention and sand fixation by the wind power static electricity through an electrostatic cleaning principle. The whole device comprises a small-sized direct current wind-driven generator, an electrostatic tree and an underground negative electrode. When wind does not spring up in a normal state, an electrostatic tree carbon fiberdroops naturally because of the gravity effect, and the surface area of the fiber is contracted to reduce the aging effect of sun radiation and the like on the fiber. When a sand storm springs up, electrostatic repulsive effect is gradually strengthened because the load of the positive charges is increased. The current is larger when the wind speed is higher, the same charge accumulation is repulsive, the electrostatic fiber starts to spread in a radial shape to ensure that the positive charges carried on the surface of the fiber adsorbs sands and dust; and simultaneously, the open tree-shapedfiber increases the resistance plane to wind so as to play a role of weakening the wind power. The direct current negative charges generated by the wind is guided into the earth to weaken surface motion of large particle sands and dust carrying positive electricity so as to play a role in wind prevention and sand fixation integrally.

Description

Method and device that a kind of wind-force static is checked winds and fixed drifting sand

Technical field

The present invention relates to a kind of device of checking winds and fixing drifting sand, specifically, it relates to the tree-like electrostatic equipment that a kind of static that can utilize wind-force to produce plays the effect of checking winds and fixing drifting sand.

Background technology

Its annual change characteristics of Devil in North China are at present: spring is maximum, accounts for 1/2 of annual sum, and take second place summer, and autumn is minimum; By month, the frequency that the April takes place is the highest, and March and May take second place, and the September in autumn is minimum.Central and west regions, Inner Mongol sandstorm in the April frequency of occurrences is the highest, accounts for 73% of the whole year spring (3～May).

By above-mentioned analysis as can be seen: China's sandstorm occurs in spring mostly, and this main cause is northern area temperature rise in spring, and the earth thaws, and vegetation (particularly ephemeral) coverage scale is low simultaneously.North arid in western spring is short of rain, and face of land drying is soft, and is structural poor.No matter be to plough or desert steppe, all do not have vegetation and cover, be the abundant sand and dust source of dustiness.Normal strong powerful cold air invasion in spring in addition.Having caused sandstorm to focus mostly on was thus broken out spring.

By last we can sum up three primary conditions that are formed with of sandstorm:

1. strong wind, this is the dynamic condition that forms sandstorm

2. ground sand and dust, this is the material base that forms sandstorm

3. unsettled atmospheric stratification state, this is important local thermal condition.

Human for containment strong wind or air labile state aspect, still powerless so far.The control of sandstorm can be conceived to contain the sand and dust source, weakens the strong wind wind speed.

The Gobi desert of eight nefuds of China, four big sand grounds and the length and breadth of land all is distributed in three northern areas of China; for current China sandstorm Prevention Technique present situation; from start 30 years the three Norths shelter-forest project as can be seen: if calculate by annual afforestation area; three northern areas of China should all be afforested so; but it is in fact really not so; word is arranged on the forestry, cry " three minutes make, seven be in charge of ", it has illustrated the extreme importance of protection in afforestation is produced easy-to-understandly.Major part is a sandy land, plants trees in the desertification grassland.And in the core area of dust storm area of origin, Gobi desert, wide stretches of desert and extremely abominable ecological environment can't be survived trees at all.

Also there are many defectives in engineering (chemistry) sand fixing technology for surperficial capping.The surface capping is divided into fragility capping (as cement concrete etc.) and plasticity capping (pitch, high poly-plastic film etc.), makes it that protecting crust of certain intensity be arranged at sandy land surface formation one deck.This method is produced effects soon, but large tracts of land capping cost is too high, can not large tracts of land use.Season, the temperature difference was big round the clock owing to be subjected to the Northwest, desert simultaneously, and sunshine on daytime is strong, and the aging weathering of mutability is serious.The physical weathering intense influence.The surface cover closing material weathering that when not playing dust storm, still is corroded, and to the ecological environment on the sand ground permanent damage face of land, institute's consumable material can not second use.These all become the principal element that limits its application development.

From the above, we press for and can develop a kind of enough can variation by the self adaptation dust storm, to the pollution-free destruction of ambient soil.The effective Prevention Technique of the sandstorm that is easy to safeguard.Up to the present, do not see the device of checking winds and fixing drifting sand that the dustproof very good environmental friendliness again of sand-fixing effect is easy to produce as yet.

Summary of the invention

The present invention has proposed a kind of brand-new wind-force static that utilizes the electrostatic precipitation principle to check winds and fix drifting sand, propose a kind of simple in structure, use reliable, method that the effect of checking winds and fixing drifting sand is very good and device.

Principle of the present invention is such: the direct current that utilizes wind-force to produce is constantly accumulated the high pressure positive charge, and the asymmetric friction of kicking up in the process according to sand and dust causes sand and dust electronegative, utilizes the principle of electrostatic precipitation to reach wind-force static and checks winds and fixes drifting sand.Whole device produces dc static by the wind-force in the sandstorm, and the big more electric current of wind speed is big more.Dc static causes positive charge constantly to accumulate reinforcement, because like charges repels each other the carbon fiber mutual exclusion on the static tree is upheld.Simultaneously in the sandstorm production process, because asymmetric rubbing action makes the sand and dust of the formation of kicking up electronegative.This more helps the electronegative sand and dust of high-pressure electrostatic absorption, and the static tree has also increased the resistance to wind when upholding.Produce galvanic negative electrical charge for wind-force and then import the earth, by Electrostatic Absorption, weaken the surface of the bulky grain sand and dust of positively charged and move equally, thereby integral body plays the effect of checking winds and fixing drifting sand.

Because this equipment directly utilizes direct current that wind-force the produces electrostatic power sources as dedusting, and itself can change with the variation of the intensity of dust storm with regard to wishing electric current.Therefore, wind power plant of the present invention is simply more than conventional wind generator facility, also just shows that its cost and maintenance management expense are relatively cheap many simultaneously.

This mainly is because at first wind-power electricity generation is for the industrial and agricultural production electricity consumption, sometimes also need to be connected with electrical network, therefore, must guarantee as far as possible that the wind wheel unit keeps the stable generation power of high speed, this just needs devices such as step-up gear, centrifugal brake, hydraulic system.Secondly, because the electric energy instability that wind energy produces therefore need energy storage device, and wind power generation will link to each other with electrical network and must export conversion to electric current.It also is the higher major reason of wind-power electricity generation price that these Unit Installation are safeguarded.And the generating of this device mainly is the control that is used for sandstorm, and the wind-force electrogenesis changes needed just advantage with wind speed.Therefore just do not need these speedup stabilising arrangements yet.The electrogenesis of this device is directly used in the absorption of sandstorm simultaneously, does not need to store and current conversion.Therefore, this also is that cost is relative much lower reason with the maintenance management expense.

Main application fields:

1. Desert of Gobi district Rail Highway traffic reduces wind erosion, prevents that sand from burying.

2. the soldier at the head of a formation of desert treatment, particularly at the newly-ploughed sand ground of oasis outer rim, sandy arable land.The semifixed sand drift and the grassland of plant coverage deficiency.Constantly push ahead with afforestation.

3. the clay mineral matter and the organic substance of exquisiteness in the absorption fixing soil prevent that fine sand is deposited in upper soll layer, play curing soil, keep fertility, and assurance crops and herding are also produced.

Main sandstorm seedbed control measures is to start with from controlling ecological environment at present, but because husky seedbed mainly concentrates on the northwest, because the Northwest's weather arid, it is serious to desertify, and vegetation is difficult to growth, carries out the ecological management weak effect, management maintenance cost height.And the more important thing is the tree planting sand control that reaches decades because phytoremediation itself is difficult to quantification, and adding that sandstorm mostly occurred in vegetation few spring, effect is difficult to be weighed accurately and admit.

In addition, the sandstorm control also has surperficial capping to fix the sand.But because its area coverage is big, disposable input cost is huge, has limited practical application.And the most of the time surface is sealed on the strong weathering and erosion effects in the Northwest such as suffering day and night temperature, Exposure to Sunlight.Real sand prevention timeliness is also few.And carry out the plant ecological reparation and follow up having produced the pollution that is difficult to reverse with desertifying, being difficult in afterwards.

The wind-force static that this paper proposes fixes the sand equipment, and technical difficulty is low, and the simple cost of equipment is low, having overcome sandstorm dirt source region can't planting trees and grass, and survival rate is low, management maintenance cost height, the more important thing is the not influence of sand ground ground surface environment, can follow-uply carry out vegetationization.Static removes sand effect can quantification, is easy to obtain international authentication and relevant the support.

Description of drawings

Fig. 1 is the theory of constitution schematic diagram of wind-force electrostatic equipment of the present invention

Fig. 2, Fig. 3 are the principle schematic of wind-force static tree of the present invention

Fig. 4 is a static tree schematic layout pattern of the present invention

The schematic layout pattern of Fig. 5 blower fan

Each several part assembly in the accompanying drawing: 1 small-sized DC wind-driven generator, 2 fan supporters, 3 underground negative electrodes, 4 static tree pole, 5 static resin/carbon fiber silks, 6 dandelion formula joints, 7 wind traces.

The specific embodiment

As shown in Figure 1: the wind-force static of checking winds and fixing drifting sand tree is made up of static tree pole (4), carbon fiber wire (5) and dandelion formula joint (6).What small-sized DC wind-driven generator (1) adopted is the most frequently used AC permanent-magnetic generator output DC behind rectifier, and the seat in the plane height is 10m, and it is powered to the static tree by lead.To static resin/carbon fiber silk (5) buildup of static electricity, negative electrical charge discharges to the earth by underground negative electrode (3) positive charge that produces by dandelion formula joint (6).Underground negative electrode is made by corrosion resistant plate, and static tree pole (4) is made height 2m by steel pipe or concrete frame or wooden electric pole.Static resin/carbon fiber silk (5) adopts is that the high-strength carbon fiber silk of carbonization 2200 degree is made, have extremely strong high temperature resistant, wear-resisting, corrosion resistance, and electric conductivity height.Dandelion formula joint (6) material is an epoxy resin, and effect is to give each carbon fiber wire with the uniform conduction of static.When not blowing under the usual state, as shown in Figure 3, static resin/carbon fiber (5) is because action of gravity is sagging naturally, and the surface does not have suction-operated to sand and dust.The sagging naturally shrinkage surface of carbon fiber is long-pending, can play and reduce the aging action to fiber such as solar radiation.When sandstorm was blown, as shown in Figure 2, because the load of positive charge increases, the electrostatic repulsion effect strengthened, and electrostatic fibre begins to be four to be penetrated shape and open, and surface itself is positively charged by the Electrostatic Absorption sand and dust.The turbulent flow that open dendritic fibers of while causes weakening wind-force also has pretends usefulness very much.

In order to strengthen the surface charge field intensity of static tree, increase absorption affinity to dust.As shown in Figure 4, the present invention also can take small-sized DC wind-driven generator (1) series connection, increases supply voltage, the parallel connection of electrostatic precipitation net, the binding mode of raising load voltage.For the layout of many small-sized DC wind-driven generators (1), as shown in Figure 5, the shortest spacing distance between relevant two wind energy conversion systems can be that formed wake flow disturbed condition was made estimation after air flow stream was crossed wind mill group from wind trace (7).Its numerical value is 5～20 times of rotor diameter, preferably gets 8～12 times, to prevent the interference of windmill field wake flow.

In above-mentioned diagram; though having enumerated preferred embodiment of the present invention is illustrated; but many weeks; should not limit the scope of the present invention on the contrary by this embodiment; that is any engineering science researcher who is familiar with innovation point is if use the main feature of the present invention; carry out the change of some details, all still belong to scope of patent protection of the present invention.

Claims

1. wind-force static method of checking winds and fixing drifting sand is characterized in that: utilize the direct current that wind-force produces and constantly accumulate the high pressure positive charge, utilize the method that wind-force static is checked winds and fixed drifting sand that reaches of electrostatic precipitation principle.

2. realize the check winds and fix drifting sand device of method of the described wind-force static of claim 1 for one kind, it is characterized by: comprise the small-sized DC wind-driven generator, static tree and underground negative pole.Whole device produces dc static by the wind-force in the sandstorm, and the big more electric current of wind speed is big more.Dc static causes positive charge constantly to be accumulated, and like charges upholds the carbon fiber mutual exclusion on the static tree owing to repel each other.And asymmetric friction simultaneously makes the sand and dust of the formation of kicking up electronegative, and these electronegative sand and dust more help high-pressure electrostatic absorption.The static tree also increases the resistance to wind when stretching.Wind-force produces galvanic negative electricity and then imports the earth, and move by the surface that Electrostatic Absorption weakens the bulky grain sand and dust of positively charged on the face of land, thereby integral body plays the effect of checking winds and fixing drifting sand.

3. according to realizing the check winds and fix drifting sand device of method of the described a kind of wind-force static of claim 2, its feature also comprises: static tree pole can be made by steel pipe or concrete frame or wooden electric pole, static resin/carbon fiber silk is made for the high-strength carbon fiber silk, have high temperature resistant, wear-resisting, corrosion resistance, and electric conductivity height.The carbon fiber joint is the dandelion formula, and effect is to give each carbon fiber wire with the uniform conduction of static.

4. according to realizing the check winds and fix drifting sand device of method of the described a kind of wind-force static of claim 2, its feature also comprises: when not blowing under the normal condition, the static resin/carbon fiber is because action of gravity is sagging naturally, shrinkage surface is long-pending, can play to reduce solar radiation etc. the aging action of fiber is not had suction-operated to sand and dust in the surface simultaneously.When sandstorm was blown, because the load of positive charge increases, the electrostatic repulsion effect strengthened gradually.Electrostatic fibre begins to be four to be penetrated shape and opens, surperficial positively charged absorption sand and dust itself, and open dendritic fibers also has effect to weakening wind-force simultaneously.

5. according to realizing the check winds and fix drifting sand device of method of the described a kind of wind-force static of claim 2, its feature also comprises: in order to strengthen the surface charge field intensity of static tree, increase the absorption affinity to dust.The present invention also can take the series connection of small-sized DC wind-driven generator, increases supply voltage, the parallel connection of electrostatic precipitation net, the binding mode of raising load voltage.

6. according to realizing the check winds and fix drifting sand device of method of the described a kind of wind-force static of claim 2, its feature also comprises: for the shortest spacing distance between two wind energy conversion systems in the layout of many small-sized DC wind-driven generators, can be that formed wake flow disturbed condition was made estimation after air flow stream was crossed wind mill group from the wind trace.Its numerical value is 5～20 times of rotor diameter, preferably gets 8～12 times, to prevent the interference of windmill field wake flow.

7. according to realizing the check winds and fix drifting sand device of method of the described a kind of wind-force static of claim 2, its feature also comprises: the present invention directly utilizes direct current that wind-force the produces electrostatic power sources as dedusting, and electric current own can change with the variation of the intensity of dust storm.