CN113107794A

CN113107794A - Small wind driven generator for desert regions

Info

Publication number: CN113107794A
Application number: CN202110234035.1A
Authority: CN
Inventors: 俞梦瑶
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2021-07-13

Abstract

The invention discloses a small wind driven generator for desert regions, which comprises a hollow shell, wherein two cavities are arranged in the shell, the shell is connected with a main shaft in a penetrating and rotating mode through a bearing, one end, located in one cavity, of the main shaft is connected with a generator, one section, located in the other cavity, of the main shaft is welded with two air exchange blocks, each air exchange block is of a hollow structure, one end, located outside the shell, of the main shaft is welded with a fan blade, an air inlet hole and an air outlet hole are formed in the shell, and a plurality of air vents are formed in the side wall of the shell. Has the advantages that: the wind driven generator can effectively prevent sand particles in wind in desert from entering the generator under the condition of ensuring good heat dissipation of the generator, avoid the influence of the sand particles on the normal work of the generator, and simultaneously can adjust the rotating speed of the main shaft when the wind power is high and the rotating speed is too high, thereby avoiding the long-time high-load work of the generator and protecting the generator.

Description

Small wind driven generator for desert regions

Technical Field

The invention relates to the technical field of wind power generation, in particular to a small wind driven generator for a desert area.

Background

With the continuous development of science and technology and economy, the demand of people on energy is gradually increased, the total amount of traditional non-renewable energy sources such as coal, petroleum and the like is certain, namely, the total amount is a little less, and the forming period is extremely long, so that the non-renewable energy sources can be used up for one day, people already face the problem of energy crisis, and therefore the renewable energy sources such as wind energy, geothermal energy, solar energy and the like need to be vigorously developed, and the wind energy needs to be obtained by a wind driven generator.

In the prior art, a wind driven generator is often arranged in a region with large wind power, the desert region is large in wind power due to large temperature difference and no shielding object, the generator is suitable for being arranged, however, the large wind in the desert region is often accompanied with sand grains, the wind driven generator needs to be provided with holes for heat dissipation of the generator for heat dissipation, the sand grains can enter the generator through the holes to affect the internal structure, the wind driven generator is often high in height and difficult to clean the inside, if the generator is completely plugged, the heat dissipation effect cannot be guaranteed, the generator is in a high-temperature working state for a long time, the service life of the generator can be greatly shortened, and when the wind power is too large, the existing generator does not have good countermeasures, the service life of the generator can be shortened due to long-term overload work, and therefore, a small wind driven generator for the desert region is provided.

Disclosure of Invention

The invention aims to solve the problems that heat dissipation and sand prevention in a desert area cannot be combined and strong wind does not have good protection measures in the prior art, and provides a small wind driven generator for the desert area.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a desert area uses small-size aerogenerator, includes hollow casing, be provided with two cavitys in the casing, the casing runs through the bearing and rotates and is connected with the main shaft, the one end that the main shaft is located a cavity of casing is connected with the generator, one section welding that the main shaft is located another cavity of casing has two blocks of ventilating, the block of ventilating is hollow structure, the main shaft is located the outside one end welding of casing and has the fan blade, inlet port and exhaust hole have been seted up in the casing, a plurality of air vents have been seted up to the casing lateral wall, be provided with breather in the block of ventilating.

In foretell desert area uses small-size aerogenerator, breather includes the breather plate that cup joints with the sealed slip of piece of taking a breath, the lateral wall welding that main shaft one side was kept away from to the breather plate has the magnetic block, it has first permanent magnet, second permanent magnet, third permanent magnet to inlay in the casing lateral wall, suction hole, venthole have been seted up to the breather plate lateral wall, be provided with the sediment outflow device on the breather plate, be provided with multiunit decelerator in the casing.

In foretell desert area uses small-size aerogenerator, arrange husky device and include a plurality of intercommunicating pores of seting up in the breather plate, be provided with the solenoid valve in the intercommunicating pore, the breather piece is kept away from and is seted up first row of husky hole in the lateral wall of main shaft one side, the second row of husky hole has been seted up to the casing lateral wall, be provided with trigger mechanism in the breather piece.

In the small wind driven generator for the desert area, the trigger mechanism comprises an installation cavity arranged in the side wall of the ventilation block, two conducting strips are arranged in the installation cavity, a reset spring is fixedly connected between one conducting strip and the inner side wall of the installation cavity, and the conducting strips are connected with the electromagnetic valve in series through a wire.

In foretell desert area uses small-size aerogenerator, decelerator is including seting up the deceleration tank in the casing and setting up the electro-magnet in the casing, sliding sleeve has the speed reduction piece in the deceleration tank, fixedly connected with coupling spring between speed reduction piece and the deceleration tank inside wall, the lateral wall welding that main shaft one side was kept away from to the scavenging plate has a plurality of conducting rods, the conducting rod passes through the wire with the electro-magnet and establishes ties, the inside lateral wall of scavenging plate is inlayed and is had a plurality of magnetic plates.

In the small wind driven generator for the desert area, a sealing plate is welded between the two air exchange blocks and is in sliding connection with the inner side wall of the shell.

Compared with the prior art, the invention has the advantages that:

1. when the wind driven generator rotates under the drive of wind power, the main shaft can drive the two air exchange blocks to synchronously rotate, because the magnetism of the first permanent magnet is opposite to that of the second permanent magnet, in the rotating process of the air exchange blocks, the two magnetic blocks can be gradually opposite to the first permanent magnet or the second permanent magnet, so that one air exchange plate slides to the first permanent magnet, the air suction hole is communicated with the air inlet hole, outside air is sucked into the air exchange blocks, the other air exchange plate slides to the direction far away from the second permanent magnet, the air outlet hole is communicated with the air outlet hole, the air sucked in the air exchange blocks is pumped into the other cavity of the shell by the air exchange plates, the air in the cavity is discharged to the outside through the air vents, air flow is formed, the heat dissipation of the generator is realized, the air exchange rate can be accelerated along with the increase of the rotating speed of;

2. when the ventilation plate sucks external air, certain sand grains are doped in the ventilation plate, the ventilation plate rotates along with the rotation of the main shaft, the sand grains cling to the surface of the ventilation plate under the action of centrifugal force and cannot enter along with the air pumped into the shell, when the ventilation plate rotates until the first sand discharge port and the second sand discharge port coincide, the two conducting strips are not in contact with each other due to the magnetic attraction force, the electromagnetic valve is electrified and opened, the sand grains on the side wall of the ventilation plate are thrown out of the communication hole under the action of the centrifugal force and are thrown to the outside through the first sand discharge hole and the second sand discharge hole, and the influence on an internal structure caused by the fact that the sand grains enter the shell along with the air when the generator radiates heat is avoided;

3. the air exchange plate continuously reciprocates along with the rotation of the air exchange block, so that the air exchange plate drives the conductive rod to continuously cut a magnetic induction line of the magnetic force plate to generate induction current, the induction current is supplied to the electromagnet, the electromagnet generates magnetic repulsion to the speed reduction block and continuously approaches to the main shaft, if the main shaft is at normal rotation speed, the speed reduction block is reset under the action of the elastic force of the connecting spring after moving, when the rotation speed of the main shaft is too high, the corresponding speed for generating the induction current is higher, the period of the magnetic force generated by the electromagnet is shorter, the speed reduction block cannot be reset under the elastic force of the connecting spring and gradually approaches to the main shaft until contacting with the main shaft, the rotation speed of the main shaft is reduced through friction, and the phenomenon that the generator is in high-load operation for a long time;

4. compared with the prior wind driven generator which directly stops the operation of the wind driven generator when running in an overspeed, the invention actively decelerates in the overspeed, namely, the generator still keeps operating to generate power when the wind power is overlarge, thereby greatly improving the energy utilization rate.

Drawings

FIG. 1 is a schematic structural view of a small wind power generator for desert areas according to the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a cross-sectional view taken at C-C of FIG. 1;

FIG. 5 is an enlarged view at E in FIG. 4;

fig. 6 is a cross-sectional view taken at D-D in fig. 4.

In the figure: the wind power generation device comprises a shell 1, a main shaft 2, a generator 3, fan blades 4, a ventilation block 5, a first permanent magnet 6, a second permanent magnet 7, a ventilation plate 8, a magnetic block 9, an air suction hole 10, an air outlet hole 11, an air inlet hole 12, an air outlet hole 13, a vent hole 14, a first sand discharge hole 15, a communication hole 16, an electromagnetic valve 17, an installation cavity 18, a conducting strip 19, a reset spring 20, a third permanent magnet 21, a second sand discharge hole 22, a conducting rod 23, a magnetic force plate 24, an electromagnet 25, a speed reduction groove 26, a speed reduction block 27, a connecting spring 28 and a sealing plate 29.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

Examples

Referring to fig. 1-6, a small wind power generator for desert regions comprises a hollow shell 1, two cavities are arranged in the shell 1, the cross section of one cavity is rectangular, the cross section of the other cavity is circular, the shell 1 is connected with a main shaft 2 through a bearing in a penetrating and rotating manner, one end of the main shaft 2, which is positioned in one cavity of the shell 1, is connected with a generator 3, the generator 3 is positioned in the rectangular cavity, two air exchanging blocks 5 are welded on one section of the main shaft 2, which is positioned in the other cavity of the shell 1, the two air exchanging blocks 5 are positioned in the circular cavity, the air exchanging blocks 5 are of a hollow structure, one end of the main shaft 2, which is positioned outside the shell 1, is welded with a fan blade 4, an air inlet 12 and an air outlet 13 are arranged in the shell 1, as shown in fig. 6, the cross sections of the air inlet 12 and the air outlet, the other parts of the ventilation block 5 can seal the parts of the air inlet holes 12 and the exhaust holes 13 which are not communicated, and the airtightness in the rectangular cavity of the shell 1 is kept, so that air can be pumped into the rectangular cavity, the side wall of the shell 1 is provided with a plurality of ventilation holes 14, the ventilation holes 14 are internally provided with one-way valves, air is only allowed to flow to the outside from the shell 1, and a ventilation device is arranged in the ventilation block 5.

The air interchanger comprises an air interchanging plate 8 which is hermetically and slidably sleeved with an air interchanging block 5, the side wall of the air interchanging plate 8 is in a wave shape, two connecting holes 16 are positioned at the wave troughs of the wave, sand grains are gathered at the connecting holes 16 of the wave troughs under the action of centrifugal force to wait for discharge, a magnetic block 9 is welded on the side wall of the air interchanging plate 8 far away from one side of a main shaft 2, a first permanent magnet 6, a second permanent magnet 7 and a third permanent magnet 21 are embedded in the side wall of a shell 1, the directions of the magnetic poles of the two magnetic blocks 9 are consistent, the directions of the magnetic poles of the first permanent magnet 6 and the second permanent magnet 21 are consistent, magnetic attraction is generated on the magnetic block 9, the direction of the magnetic pole of the second permanent magnet 21 is opposite to the direction of the magnetic pole of the first permanent magnet 6, magnetic repulsion is generated on the magnetic block 9, and the air interchanging block 5 is rotated by the opposite magnetic poles, meanwhile, through the communication between the suction hole 10 and the air inlet hole 12 and the communication between the air outlet hole 11 and the air outlet hole 13, outside air is continuously sucked into the air exchange block 5 and then pumped into the rectangular cavity of the shell 1, so that the air in the rectangular cavity of the shell 1 is discharged to the outside, air flowing is formed to dissipate heat of the generator 3, the side wall of the air exchange block 5 is provided with the suction hole 10 and the air outlet hole 11, the air exchange plate 8 is provided with a sand discharging device, and a plurality of groups of speed reducers are arranged in the shell 1.

Arrange husky device and include a plurality of intercommunicating pore 16 of seting up in breather plate 8, because the sand grain is great for the density of air, make the sand grain at intercommunicating pore 16 department gathering through the centrifugal force that rotates the production, and the air can be along with the motion of breather plate 8, this pump goes into in the rectangular cavity of casing 1, be provided with solenoid valve 17 in the intercommunicating pore 16, first row of sand hole 15 has been seted up in the lateral wall of breather block 5 keeping away from main shaft 2 one side, second row of sand hole 22 has been seted up to casing 1 lateral wall, along with the rotation of breather block 5, when rotating to first row of sand hole 15 and second row of sand hole 22 intercommunication, solenoid valve 17 is opened, make the sand grain under the effect of centrifugal force, be thrown away from casing 1, be provided with trigger mechanism in the breather.

The trigger mechanism comprises a mounting cavity 18 arranged in the side wall of the air exchange block 5, two conducting strips 19 are arranged in the mounting cavity 18, one of the conductive sheets 19 is sleeved with the mounting cavity 18 in a sliding manner, a return spring 20 is fixedly connected between one of the conductive sheets 19 and the inner side wall of the mounting cavity 18, the other conductive sheet 19 is glued with the inner side wall of the mounting cavity 18, and in the rotating process of the conductive sheets 19, the first permanent magnet 6, the second permanent magnet 7 and the third permanent magnet 21 are all in a non-contact state under the action of magnetic attraction, so that the electromagnetic valve 17 is in a closed state, only when the first sand discharge hole 15 is communicated with the second sand discharge hole 22, at this time, the conducting strip 19 is no longer attracted by the first permanent magnet 6, the second permanent magnet 7 and the third permanent magnet 21, the two conducting wire sheets 19 are contacted under the elastic force of the return spring 20, so that the electromagnetic valve 17 is opened to discharge sand, and the conducting sheet 19 is connected with the electromagnetic valve 17 in series through a conducting wire.

The speed reducer comprises a speed reducing groove 26 arranged in the shell 1 and an electromagnet 25 arranged in the shell 1, a speed reducing block 27 is sleeved in the speed reducing groove 26 in a sliding manner, the speed reducing block 27 is made of magnetic materials, a rubber sheet is glued on one side close to the main shaft 2, in order to increase the friction force, a connecting spring 28 is fixedly connected between the speed reducing block 27 and the inner side wall of the speed reducing groove 26, a plurality of conductive rods 23 are welded on the side wall of the scavenging plate 8 far away from the main shaft 2, the conductive rods 23 are connected with the electromagnet 25 in series through conducting wires, a diode is connected with the conductive rods 23 and the electromagnet 25 in series at the same time, the induction current generated by the conductive rod 23 can only pass through the electromagnet 25 in one direction, so that the electromagnet 25 periodically generates magnetic repulsion to the speed reduction block 27, the inner side wall of the ventilation block 5 is embedded with a plurality of magnetic plates 24, the magnetic induction lines generated by the magnetic plates 24 are tangent to the conductive rod 23, and the conductive rod 23 cuts the magnetic induction lines to generate induction current when reciprocating along with the ventilation plate 8.

The welding has the shrouding 29 between two blocks of taking a breath 5, shrouding 29 and 1 inside wall sliding connection of casing, and shrouding 29 rotates the in-process at the block of taking a breath 5, arranges the shutoff of husky hole 22 with the second, avoids outside sand grain to arrange husky hole 22 through the second and gets into inside the casing 1, produces the influence to the rotation of the block of taking a breath 5.

In the invention, the fan blade 4 is driven by wind power to rotate to drive the main shaft 2 to rotate and generate electricity through the generator 3, the main shaft 2 drives the two air exchange blocks 5 to rotate together in the rotating process, the air exchange blocks 5 drive the air exchange plates 8 inside to rotate together, when the main shaft rotates to the process that one air exchange plate 8 is opposite to a first permanent magnet 6 and the other air exchange plate 8 is opposite to a second permanent magnet 7, the air suction hole 10 is communicated with the air inlet hole 12, the air outlet hole 11 is communicated with the air outlet hole 13, at the time, the magnetic block 9 on the air exchange plate 8 opposite to the first permanent magnet 6 is attracted by the magnetic attraction of the first permanent magnet 6 and slides towards the first permanent magnet 6, and outside air is sucked into the air exchange block 5 through the air suction hole 12 and the air suction hole 10 by the sliding of the air exchange plate 8 opposite to the second permanent magnet 7, and the magnetic repulsion of the second permanent magnet 7 is applied to the magnetic block 9 on, the ventilation plate 8 slides in the direction away from the second permanent magnet 7, sucked air is pumped into the shell 1 through the air outlet hole 11 and the air exhaust hole 13, and at the moment, the air in the shell 1 is exhausted to the outside through the air vent hole 14, so that air circulation is formed, and heat dissipation is performed on the generator 3;

when the ventilation plate 8 sucks external air, certain sand grains are doped in the ventilation plate, at the moment, along with the rotation of the ventilation block 5 driven by the main shaft 2, the sand grains cling to the surface of the ventilation plate 9 under the action of centrifugal force, and because of the wavy surface of the ventilation plate 9, the sand grains can be gathered at the connecting hole 16 and cannot enter along with the air pumped into the shell 1, when the ventilation block 5 rotates until the first sand discharge port 15 is superposed with the second sand discharge port 22, at the moment, the conducting strip 19 in the ventilation block 5 is not subjected to the magnetic attraction of the first permanent magnet 6, the second permanent magnet 7 and the third permanent magnet 21, under the elastic force of the reset spring 20, the two conducting strips 191 are contacted, so that the electromagnetic valve 17 is electrified and opened, at the moment, the sand grains at the connecting hole 16 are thrown out from the connecting hole 16 under the action of centrifugal force and are thrown to the outside through the first sand discharge hole 15 and the second sand discharge hole 22, the influence on an internal structure caused by sand grains entering the shell along with air while heat dissipation of the generator is avoided;

along with the rotation of the air exchange block 5, the air exchange plate 8 continuously reciprocates, so that the air exchange plate 8 drives the conductive rod 23 to continuously cut the magnetic induction line of the magnetic force plate 24, induction current is generated and supplied to the electromagnet 25, the electromagnet 25 generates magnetic repulsion to the speed reduction block 27 and continuously approaches to the main shaft 2, if the main shaft 2 is at a normal rotating speed, the speed reduction block 27 resets under the elastic force of the connecting spring 28 after moving, and when the rotating speed of the main shaft 2 is too high, the corresponding speed of generating the induction current is higher, the period of generating the magnetic force by the electromagnet 25 is shorter, the speed reduction block 27 cannot reset under the elastic force of the connecting spring 28 and gradually approaches to the main shaft 2 until contacting with the main shaft and pressing to the main shaft 2, the rotating speed of the main shaft 2 is reduced through friction, and when the wind power is too high, the generator is in high-load operation for a.

Although terms such as the housing 1, the main shaft 2, the generator 3, the fan blade 4, the ventilation block 5, the first permanent magnet 6, the second permanent magnet 7, the ventilation plate 8, the magnetic block 9, the air suction hole 10, the air outlet hole 11, the air inlet hole 12, the air outlet hole 13, the air vent 14, the first sand discharge hole 15, the communication hole 16, the solenoid valve 17, the mounting cavity 18, the conductive sheet 19, the return spring 20, the third permanent magnet 21, the second sand discharge hole 22, the conductive rod 23, the magnetic plate 24, the electromagnet 25, the deceleration groove 26, the deceleration block 27, the connecting spring 28, and the closing plate 29 are used more often, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The utility model provides a desert area is with small-size aerogenerator, includes hollow casing (1), be provided with two cavitys in casing (1), its characterized in that, casing (1) runs through to rotate through the bearing and is connected with main shaft (2), the one end that main shaft (2) are located a cavity of casing (1) is connected with generator (3), one section welding that main shaft (2) are located another cavity of casing (1) has two blocks of ventilating (5), block of ventilating (5) are hollow structure, the one end welding that main shaft (2) are located casing (1) outside has fan blade (4), set up inlet port (12) and exhaust hole (13) in casing (1), a plurality of air vents (14) have been seted up to casing (1) lateral wall, be provided with breather in block of ventilating (5).

2. The small wind driven generator for the desert area is characterized in that the air interchanger comprises an air interchanging plate (8) which is in sealing sliding sleeve connection with an air interchanging block (5), a magnetic block (9) is welded on the side wall of one side, away from a main shaft (2), of the air interchanging plate (8), a first permanent magnet (6), a second permanent magnet (7) and a third permanent magnet (21) are embedded in the side wall of the shell (1), an air suction hole (10) and an air outlet hole (11) are formed in the side wall of the air interchanging block (5), a sand discharging device is arranged on the air interchanging plate (8), and a plurality of groups of speed reducing devices are arranged in the shell (1).

3. The small wind driven generator for the desert regions as claimed in claim 2, characterized in that the sand discharging device comprises a plurality of communicating holes (16) arranged in the air exchanging plate (8), an electromagnetic valve (17) is arranged in the communicating holes (16), a first sand discharging hole (15) is arranged in the side wall of the air exchanging block (5) far away from the main shaft (2), a second sand discharging hole (22) is arranged in the side wall of the shell (1), and a triggering mechanism is arranged in the air exchanging block (5).

4. The small-sized wind driven generator for the desert regions as claimed in claim 3, wherein the triggering mechanism comprises a mounting cavity (18) arranged in the side wall of the air exchange block (5), two conducting strips (19) are arranged in the mounting cavity (18), a reset spring (20) is fixedly connected between one conducting strip (19) and the inner side wall of the mounting cavity (18), and the conducting strips (19) are connected with the electromagnetic valve (17) in series through a lead.

5. The small wind driven generator for the desert regions as claimed in claim 2, wherein the speed reducer comprises a speed reduction groove (26) formed in the housing (1) and an electromagnet (25) arranged in the housing (1), a speed reduction block (27) is sleeved in the speed reduction groove (26) in a sliding manner, a connecting spring (28) is fixedly connected between the speed reduction block (27) and the inner side wall of the speed reduction groove (26), a plurality of conductive rods (23) are welded on the side wall of the air exchange plate (8) far away from one side of the main shaft (2), the conductive rods (23) are connected with the electromagnet (25) in series through wires, and a plurality of magnetic plates (24) are embedded in the inner side wall of the air exchange plate (5).

6. The desert area small-sized wind power generator as claimed in claim 1, wherein a sealing plate (29) is welded between the two air exchange blocks (5), and the sealing plate (29) is slidably connected with the inner side wall of the housing (1).