CN202493385U - Wind wheel of wind driven generator - Google Patents

Abstract

The utility model discloses a wind wheel of a wind power generator, which comprises blades, a hub connected with the blades, a shroud matched and connected with the hub, and a rain-shielding ring arranged on the windward side of the blades; A sealing ring is provided between the rain shielding ring and the wind deflector, and the seal ring is mated and connected with the wind deflector. When the slurry is changed, the soft edge of the curved surface of the sealing ring is close to the inner wall of the rain-shielding ring, and it is still in a sealed state during the relative rotation process, preventing dust and rainwater from entering the bearing, the ring gear and the internal seal, making the internal sealing ring not easy Aging, the surface of the ring gear is not easy to rust, thus solving the sealing between the wind turbine blade and the hub and improving its service life. The wind wheel of the utility model has the advantages of reasonable structure, safety and reliability, moisture-proof, dust-proof and corrosion-proof, which can effectively prevent rainwater and dust from eroding the ring gear and the bearing, and improve the service life of the fan.

Description

wind turbine wind turbine

technical field

The utility model relates to the field of wind power generation, in particular to a wind wheel of a wind power generator.

Background technique

The wind turbine consists of three parts: the wind rotor, the main engine, and the tower. The wind wheel is installed on the main engine and can rotate 360° relative to the axis of the main engine. The tower supports the wind wheel and the main engine at high altitude. Since wind turbines are often installed in windy, sandy and thunderstorm areas such as seaside, plateau, and desert, where the climate is harsh, the rainproof and dustproof of the entire wind turbine is an indispensable device.

At present, in the protection system of the fan, generally only the seal between the bearing and the ring gear is generally used. Due to the relative movement between the blade, the hub and the shroud, usually only rain protection measures are used, that is, a rain protection ring is installed on the back of the blade. But there is still a gap between the rain-shielding ring and the shroud, and rainwater and dust can erode the surface of the ring gear and the bearing, which does not play the role of moisture-proof, dust-proof, and corrosion-proof. Therefore, it is an urgent problem to be solved in the industry to provide a wind turbine rotor with good sealing ability.

Contents of the invention

The technical problem to be solved by the embodiment of the utility model is to provide a wind turbine with a reasonable structure, safe and reliable, moisture-proof, dust-proof, and corrosion-proof, which can effectively avoid the erosion of the ring gear and the bearing by rain and dust. Improve the service life of the fan.

In order to solve the above-mentioned technical problems, an embodiment of the utility model provides a wind turbine rotor, including blades, a hub connected to the blades, a shroud mated with the hub, and a windshield arranged on the blades to face the wind face rain ring;

A sealing ring is provided between the rain shielding ring and the wind deflector, and the seal ring is mated and connected with the wind deflector.

Preferably, the edge of the sealing ring is a curved soft edge;

The soft edge of the curved surface is in close contact with the inner wall of the rain-shielding ring.

Preferably, the thickness of the soft edge of the curved surface increases from the edge to the center.

Preferably, the sealing ring is provided with a groove for connecting with the shroud.

Preferably, the groove is an inverted trapezoidal groove.

Preferably, the sealing ring is a rubber sealing ring.

Preferably, the shroud is provided with a flanged outer edge, and the flanged outer edge is mated with the groove of the sealing ring.

Preferably, the blade is connected to the hub through a ring gear and a bearing.

Preferably, the rotor of the wind power generator is also provided with a pitch variable gearbox for driving the ring gear to rotate the blades.

Implementation of the utility model embodiment has the following beneficial effects:

A wind wheel of a wind power generator in the utility model comprises blades, a wheel hub, a rain shielding ring, a diversion cover and a sealing ring arranged between the rain shielding ring and the diversion cover. Since the groove of the sealing ring is an inverted trapezoidal groove, when sealing The ring won't come off when snapped onto the outer edge of the shroud flange. The edge of the sealing ring is a curved soft edge, and the curved surface is facing the inner wall of the rain-shielding ring. With a little axial thrust, the sealing ring shrinks toward the radial center under the force of the rain-shielding ring, which is convenient for assembly. When the slurry is changed, the wheel hub and the shroud with the seal ring do not move, only the blades with the rain shield ring rotate, so that the rain shield ring and the seal ring have relative motion. The soft side of the curved surface of the sealing ring is close to the inner wall of the rain-shielding ring, and it is still in a sealed state during the relative rotation, preventing dust and rainwater from entering the bearing, the ring gear and the internal seal, so that the internal sealing ring is not easy to age, and the ring gear The surface is not easy to rust, which solves the sealing between the wind turbine blade and the hub and improves its service life;

In a word, the wind wheel of the wind power generator of the utility model is reasonable in structure, safe and reliable, moisture-proof, dust-proof, and corrosion-resistant, which can effectively prevent rainwater and dust from eroding the ring gear and bearings, and improve the service life of the fan.

Description of drawings

Fig. 1 is the structure schematic diagram of a kind of wind generator wind wheel of the present utility model;

Fig. 2 is a cross-sectional view of a sealing ring of a wind turbine rotor of the utility model.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings.

1 and 2, the utility model embodiment provides a wind turbine rotor, including a blade 1, a hub 2 connected to the blade 1, a shroud 6 mated with the hub 2, and The rain-shielding ring 5 provided on the windward side of the blade 1 ; a sealing ring 7 is provided between the wind deflector 6 and the rain-shielding ring 5 , and the sealing ring 7 is mated and connected with the wind deflector 6 .

The edge of the sealing ring 7 is a curved soft edge 72 ; the curved soft edge 72 is in close contact with the inner wall of the rain-shielding ring 5 .

The thickness of the curved soft edge 72 increases from the edge to the center.

The sealing ring 7 is provided with a groove 71 for connecting with the shroud 6.

The groove 71 is an inverted trapezoidal groove.

The sealing ring 7 is a rubber sealing ring.

It should be noted that the sealing ring 7 is preferably made of rubber, has a certain degree of elasticity, and can always adhere to the inner wall of the rain-shielding ring 5 . The soft edge 72 of the curved surface faces the inner wall of the rain-shielding ring 5 , and as long as a little axial thrust is applied, the sealing ring 7 will shrink toward the radial center under the force of the rain-shielding ring 5 , which is convenient for assembly.

The shroud 6 is provided with a flanged outer edge, and the flanged outer edge is matched with the groove 71 of the sealing ring 7 . the

It should be noted that the groove 71 is an inverted trapezoidal groove with a small mouth and a large inside, while the cross-sectional width of the flange outer edge of the shroud 6 is large on the outside and small on the inside, and the groove 71 of the sealing ring 7 is stuck in the The deflector 6 will not fall off when the outer edge is flanged. When sizing, the hub 2 and the shroud 6 together with the sealing ring 7 do not move, and only the blade 1 rotates together with the rain-shielding ring 5, so that the rain-shielding ring 5 and the sealing ring 7 has relative motion.

The blade 1 is connected to the hub 2 through a ring gear 3 and a bearing 4 .

The rotor of the wind power generator is also provided with a pitch variable gear box for driving the ring gear to rotate the blades 1 .

In summary, the implementation of the utility model embodiment has the following beneficial effects:

A wind wheel of a wind power generator in the utility model comprises blades, a hub, a rain shielding ring, a diversion cover, and a seal ring located between the rain shield ring and the diversion cover. Since the groove of the seal ring is an inverted trapezoidal groove, when the seal ring Won't come off when snapped on the outer edge of the shroud flange. The curved surface of the soft side of the sealing ring faces the inner wall of the rain-shielding ring, and with a little axial thrust, the sealing ring shrinks toward the radial center under the force of the rain-shielding ring, which is convenient for assembly. When the slurry is changed, the wheel hub and the shroud with the seal ring do not move, only the blades with the rain ring rotate, so that the rain ring and the seal ring move relative to each other. The soft side of the curved surface of the sealing ring is close to the inner wall of the rain-shielding ring, and it is still in a sealed state during the relative rotation, preventing dust and rainwater from entering the bearing, the ring gear and the internal seal, so that the internal sealing ring is not easy to age, and the ring gear The surface is not easy to rust, which solves the sealing between the wind turbine blade and the hub and improves its service life;

In a word, the wind wheel of the wind power generator of the utility model is reasonable in structure, safe and reliable, moisture-proof, dust-proof, and corrosion-resistant, which can effectively prevent rainwater and dust from eroding the ring gear and bearings, and improve the service life of the fan.

The above is a preferred embodiment of the present utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, some improvements and modifications can also be made, these improvements and modifications It is also regarded as the protection scope of the present utility model.

Claims (9)

1. a wind turbines rotor is characterized in that, said wind turbines rotor comprises blade, the wheel hub that links to each other with said blade, the air guide sleeve that is connected with said wheel hub, and the ring that keeps off the rain of being located at said blade windward side;

Said keeping off the rain is provided with seal ring between ring and the said air guide sleeve, and said seal ring and said air guide sleeve are connected.

2. wind turbines rotor according to claim 1 is characterized in that, the edge of said seal ring is the soft limit of curved surface;

Soft limit of said curved surface and the said inwall that keeps off the rain ring are close to.

3. wind turbines rotor according to claim 1 is characterized in that, the thickness on the soft limit of said curved surface is increased progressively to central direction by the edge.

4. wind turbines rotor according to claim 1 is characterized in that, said seal ring is provided with and is used for the groove that is connected with said air guide sleeve.

5. wind turbines rotor according to claim 4 is characterized in that, said groove is for falling dovetail groove.

6. according to each described wind turbines rotor of claim 1 ~ 5, it is characterized in that said seal ring is a rubber seal.

7. wind turbines rotor according to claim 1 is characterized in that said air guide sleeve is provided with the flange outer rim, and said flange outer rim is connected with the groove fit of said seal ring.

8. wind turbines rotor according to claim 1 is characterized in that, said blade pass crosses gear ring and bearing links to each other with said wheel hub.

9. wind turbines rotor according to claim 1 is characterized in that, said wind turbines rotor also is provided with and is used to drive the change slurry gear-box that gear ring makes said blade rotation.

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