CN101576062B

CN101576062B - Rotor assembly of wind power generator

Info

Publication number: CN101576062B
Application number: CN2009100870225A
Authority: CN
Inventors: 肖禹
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-22
Filing date: 2009-06-22
Publication date: 2011-05-11
Anticipated expiration: 2029-06-22
Also published as: CN101576062A

Abstract

A rotor assembly of a wind power generator belongs to the field of wind power generation apparatuses and mainly solves the problems of heat radiation, root strength of a blade mounting wing and stresscondition of a shaft cantilever. A rotor assembly in an external-rotor-type wind power generator is improved. A blade mounting wing (4) is moved backward and positioned within an axial size range of a part stuck with magnetic steel, and a lateral folded edge (6) and a function plate (7) are used for improving the root strength of the blade mounting wing. Balance material discharge holes (3) are evenly distributed on a cup bottom (1) at the front end of a rotor so that an opening structure is formed in the chamber of the rotor. The external edge of the cup bottom (1) is provided with a tangentplane (9), and a flowing passageway (11) is formed between the tangent plane (9) and the inner wall of a port of a front flow guide hood (10) so that a flowing passageway can be arranged for the air in the chamber and outside. A back protecting hood (12) is provided with a shutter-type window (14) capable of pressing air into the chamber. The outer wall of a rotor cup cylinder (5) is provided with an axial raised strip (8). The rotor assembly has the advantages of high heat radiation efficiency, good heat radiation effect, high root strength of the blade mounting wing, axially backward moved gravity of the machine unit, and good stress condition of the shaft cantilever, therefore, the rotor assembly has stable operation, high power and long service life.

Description

A kind of rotor assembly of wind-driven generator

Technical field

The invention belongs to the wind power plant field, relate to a kind of rotor assembly of wind-driven generator.

Background technique

In the prior art, wind-driven generator, especially small-sized wind power generator adopt internal rotor type mostly, be the rotor separated type coaxial with wheel hub, rotor is contained in the rotating shaft, bonding magnet steel on the rotor outer wall, and the front end of rotating shaft is equipped with wheel hub, dress fan blade on it, rotating shaft is contained on the housing by the bearing that is positioned at the two ends of rotor side, and drives rotor and rotate in being wound with the stator of coil, and main deficiency is, two ends are sealed by bearing in its thorax, it is bad to dispel the heat, and the temperature height influences the magnetic of magnet steel, and easily burn coil, longer because of the rotating shaft cantilever in addition, easily vibration causes the pylon ducon frangibility on the rotating shaft rear end in the rotation, thereby influence stable operation, and power is not high; Also having a kind of is external rotor type, it is the integral type of rotor and wheel hub unification, rotor is the horizontal cup-shaped with radiating structure, the cup end of its front end is that fan blade is housed on the wheel hub, while is contained on the front end position of stationary axle with the axle sleeve at the bottom of the cup by bearing, be bonded with magnet steel on the inwall of the cup tube of rotor, stator is contained on the stationary axle, and be wound with coil, fan blade directly drives rotor and rotates outside coil, its outstanding advantage is that radiating effect is better than internal rotor type greatly, and shortened the axle suspension arm lengths, stable, the power height, but still have deficiency: with regard to rotor assembly, the cup end of the front end of rotor is an enclosed construction, gas is not easy to flow in the thorax, be unfavorable for heat radiation, so magnet steel front end heat, the rear end is cold, has both influenced the bonding strength of magnet steel, influence magnetic again, and the coil on the stator also is front end heat, and the rear end cold had not only influenced insulating property but also easy burn-out coil, wheel hub is contained in front end together with fan blade, promptly be unfavorable for even quick heat radiating, and the intensity of the fan blade of wheel hub installation wing root portion is low, wound easy to break in service, because the root diameter (RD) of the blade installation wing is much smaller than the internal diameter of the cup tube of rotor, therefore be difficult to adopt effective way to improve its root intensity, be unfavorable for further improving the stress of axle suspension arm simultaneously, in view of the effect of power in service, easy deformation is lost circle at the cup tube position of rotor, thereby influence the bonding strength of magnet steel,, have axially recessed formula air agitation groove on the outer wall of cup tube so that come off, in order to strengthen heat radiation, for this reason, the cup tube must guarantee to have enough wall thickness, and increasing wall thickness also is to solve the way that circle is lost in distortion, but wall thickness increases, inertia increases, and power is descended, and is unfavorable for using operation.

Summary of the invention

The technical problem that solves:

The present invention is the improvement to the rotor assembly in the external rotor type wind-driven generator, further improve the stability of its radiating effect and operation, with dislocation behind the blade installation wing in the axial dimension scope at bonding magnet steel position, and the rotor front end the cup end on uniform balance go to expect the hole; Can overcome the deficiencies in the prior art, not only be beneficial to quick Homogeneouslly-radiating, prolong the magnetic damped cycle of magnet steel, improve the bonding strength of magnet steel, and be convenient to improve the root intensity of the blade installation wing, improve the deformation rigidity at the cup tube position of rotor simultaneously, improve the stress of wind power generating set axle suspension arm, thereby stable, power improves, and mold production process and mould structure are greatly simplified.

The technological scheme that adopts:

A kind of rotor assembly of wind-driven generator, have rotor, former dome and back protective housing, rotor is the horizontal cup-shaped with radiating structure, it is characterized in that: the structure of rotor is, at the cup of rotor front end tape spool cover at the end, be positioned at position outside the axle sleeve external diameter and be evenly equipped with balance and go to expect the hole; The blade installation wing is positioned at the axial dimension scope at bonding magnet steel position on the cup tube inwall of rotor, the root of each blade installation wing all with rotor glass tin outer wall connect as one; Each blade installation wing has two avris flangings respectively, and each avris flanging be folded to identically, the root of each avris flanging all connects as one with the outer wall of the cup tube of rotor; Two adjacent avris flangings of the adjacent two blade installation wings interconnect by feature board, and the root of each feature board connects as one with the outer wall of the cup tube of rotor respectively; Feature board, avris flanging, the blade installation wing, cup tube, the cup end, process together with axle sleeve integral type integral body.

Beneficial effect:

Among the present invention, go to expect the hole owing on glass end of rotor front end, be evenly equipped with balance, the cup end is an open architecture, therefore, gas is convenient to flow in the thorax, be beneficial to heat radiation, help regulating dynamic balancing again, behind the blade installation wing in the axial dimension scope at dislocation bonding magnet steel position on the cup tube inwall of rotor, therefore, the one, it is quick that the blade installation wing all helps heat together with the blade after installing, conduct double shedding uniformly, magnet steel and coil front end heat can not appear, the phenomenon of rear end cold, the 2nd, move behind the blade installation wing and strengthened its root diameter (RD), add the existence of flanging and feature board, improved the intensity of the root of the blade installation wing greatly, and improved the deformation rigidity at the cup tube position of rotor, avoid the magnet steel that loses circle and cause occurring being out of shape and come off, simultaneously because the unit gravity axis moves the stress that can improve wind power generating set axle suspension arm backward; Therefore, stable, the power height can also on the make make mold production process and mould structure greatly simplify; Be particularly useful for the small-sized wind power generator group.

Description of drawings

Fig. 1, general structure schematic representation;

Fig. 2, press A-A sectional view after the combination shown in Fig. 1;

Fig. 3, press the amplification I figure shown in Fig. 1;

Embodiment

In conjunction with the accompanying drawings, further explanation in detail, described axially, be meant shown in the O-O ' axially;

Among the figure, 17 are shown magnet steel, and 18 are shown stator, and 19 are shown coil, and 20 are shown stationary axle, and 21 are shown bearing;

As shown in Figure 1, 2,

At the cup of rotor front end tape spool cover at the end 1, be positioned at position outside axle sleeve 2 external diameters and be evenly equipped with balance and go to expect hole 3; The blade installation wing 4 is positioned at the axial dimension scope at bonding magnet steel position on cup tube 5 inwalls of rotor, and the root of each blade installation wing 4 all connects as one with the outer wall of the cup tube of rotor, and root diameter (RD) equals glasss tins 5 external diameter of rotor; Each blade installation wing 4 has two avris flangings 6 respectively, gaining in strength, and each avris flanging 6 be folded to identically, the root of each avris flanging 6 all connects as one with the outer wall of the cup tube 5 of rotor; Two adjacent avris flangings 6 of adjacent two blade installation wings 4 interconnect by feature board 7, and the root of each feature board 7 connects as one with the outer wall of the cup tube 5 of rotor respectively; Feature board 7, avris flanging 6, the blade installation wing 4, cup tube 5, the cup end 1, process together with axle sleeve 2 integral type integral body.

Be evenly equipped with axial raised line 8 on the outer wall of cup tube 5,, flow, accelerate heat radiation by agitation air as radiating structure.

Former dome 10 is made for metallic material, and its surface is the paraboloid type, and guide performance is strong, heat transfer, radiating effect height; Former dome 10 by the detachable property of its port be contained in glass at the bottom of on 1 the outer rim, on 1 outer rim at the bottom of the cup, be evenly equipped with the tangent plane 9 that extends axially to the root of the blade installation wing 4, have circulation passageway 11 between the port inner wall of tangent plane 9 and former dome 10.

Back protective housing 12 is made for metallic material, after it passes stationary axle, by the detachable property of its port be contained on the inwall of port of cup tube 5, be evenly equipped with louvered window 14 on the base plate 13 of back protective housing 12, as shown in Figure 3, the structure of louvered window 14 is, has long strip type opening 15, turn in the supporting shelves leaf 16, be the α angle with base plate 13, and the α angle should be in face of sense of rotation A.

Former dome 10 and back protective housing 12 are all made with the metallic material of light anticorrosive, as aluminium and aluminum alloy.

The rotor that described integral type integral body processes adopts the metal casting technique manufactured.

The summary of performance principle:

In service, rotor rotates outside coil 19, coil 19, can constantly produce and gather heat in magnet steel 17 and the rotatable parts and in the thorax of corresponding site, as untimely heat is derived, shed, will have a strong impact on normal operation, so that burn coil etc., the metal parts of rotor can also can dispel the heat in heat conduction, and in the axial dimension scope at the blade installation wing 4 back dislocations bonding magnet steel 17 positions on the inwall of the cup tube 5 of rotor, it is quick to help heat greatly together with the fan blade after the assembling, conduct uniformly and shed, move behind the blade installation wing 4, not only its root diameter (RD) strengthens, and be suitable for by avris flanging 6 and feature board 7 and improve its root intensity, and the unit gravity axis is moved backward, so axle suspension arm stress is good; Balance goes to expect the existence in hole 3, not only convenient dynamically balanced debugging, and 1 become open architecture at the bottom of making glass, in the thorax with the inner chamber conducting of former dome 10, can help distributing of heat greatly, because former dome 10 is made for metallic material and is the paraboloid type, not only preparation process is good, intensity is high, and guide performance is strong, heat transfer, radiating effect height; The existence in tangent plane 9 and the circulation passageway 11 of formation on the outer rim at the cup end 1, make between the interior air of thorax and the external world and have flow channel, air flows in the chamber, then help heat conduction more and shed, the louvered window 14 that is provided with on the protective housing 12 then, can not only fully guarantee to have unimpeded mobile passage between the interior air of thorax and the external world, and it is in service, cool air can be pressed in the thorax from 14 quick continuous being forced to of louvered window, and according to axially passing through in the thorax, balance goes to expect hole 3 and the inner chamber that enters former dome 10, and through the circulation passageway 11 discharge fast, thereby radiating efficiency, effect is very good; Axial raised line 8 on the cup tube 5 can not only quicken flowing of air, improves the heat conduction of cup tube, radiating efficiency, and can be in the deformation rigidity that improves cup tube 5 positions, reduce the wall of cup tube 5 after, thereby reduce the inertia of unit.

Therefore, radiating effect of the present invention obviously improves, and is stable, power height, long service life.

Claims

1. the rotor assembly of a wind-driven generator, have rotor, former dome and back protective housing, rotor is the horizontal cup-shaped with radiating structure, it is characterized in that: the structure of rotor is, at the cup of rotor front end tape spool cover at the end, be positioned at position outside the axle sleeve external diameter and be evenly equipped with balance and go to expect the hole; The blade installation wing is positioned at the axial dimension scope at bonding magnet steel position on the cup tube inwall of rotor, the root of each blade installation wing all with rotor glass tin outer wall connect as one; Each blade installation wing has two avris flangings respectively, and each avris flanging be folded to identically, the root of each avris flanging all connects as one with the outer wall of the cup tube of rotor; Two adjacent avris flangings of the adjacent two blade installation wings interconnect by feature board, and the root of each feature board connects as one with the outer wall of the cup tube of rotor respectively; Feature board, avris flanging, the blade installation wing, cup tube, the cup end, process together with axle sleeve integral type integral body.

2. the rotor assembly of a kind of wind-driven generator according to claim 1, it is characterized in that: former dome (10) is made for metallic material, former dome (10) by the detachable property of its port be contained in glass at the bottom of on the outer rim of (1), on the outer rim of (1) at the bottom of the cup, be evenly equipped with the tangent plane (9) that extends axially to the root of the blade installation wing (4), have circulation passageway (11) between the port inner wall of tangent plane (9) and former dome (10).

3. the rotor assembly of a kind of wind-driven generator according to claim 1 and 2 is characterized in that: be evenly equipped with axial raised line (8) on the outer wall of cup tube (5).

4. the rotor assembly of a kind of wind-driven generator according to claim 1 and 2, it is characterized in that: back protective housing (12) is made for metallic material, after it passes stationary axle, by the detachable property of its port be contained on the inwall of port of cup tube (5), be evenly equipped with louvered window (14) on the base plate (13) of back protective housing (12), the structure of louvered window (14) is, has long strip type opening (15), turn in the supporting shelves leaves (16), be the α angle with base plate (13), and the α angle should be in face of sense of rotation A.

5. the rotor assembly of a kind of wind-driven generator according to claim 3, it is characterized in that: back protective housing (12) is made for metallic material, after it passes stationary axle, by the detachable property of its port be contained on the inwall of port of cup tube (5), be evenly equipped with louvered window (14) on the base plate (13) of back protective housing (12), the structure of louvered window (14) is, has long strip type opening (15), turn in the supporting shelves leaves (16), be the α angle with base plate (13), and the α angle should be in face of sense of rotation A.

6. the rotor assembly of a kind of wind-driven generator according to claim 1 and 2, it is characterized in that: the surface of former dome (10) is the paraboloid type.

7. the rotor assembly of a kind of wind-driven generator according to claim 3, it is characterized in that: the surface of former dome (10) is the paraboloid type.

8. the rotor assembly of a kind of wind-driven generator according to claim 4, it is characterized in that: the surface of former dome (10) is the paraboloid type.

9. the rotor assembly of a kind of wind-driven generator according to claim 5, it is characterized in that: the surface of former dome (10) is the paraboloid type.