CN206845904U - Wind generating set yaw sealing device and wind power generating set - Google Patents

Abstract

The utility model provides a sealing device for yaw of a wind turbine generator set and a wind turbine generator set. The sealing device for wind turbine yaw includes a mounting piece and a sealing piece. The mounting piece is connected to the nacelle cover. The sealing piece is connected to a fixed object that rotates or is stationary relative to the nacelle cover. The mounting piece is provided with a filler holding groove. The filler A sealing filler is arranged in the receiving groove, the sealing member extends into the sealing filler, and at least one surface of the sealing member contacts the sealing filler and forms a labyrinth sealing structure. The sealing device for yaw of the wind turbine has good sealing effect.

Description

Wind turbine yaw sealing device and wind turbine

technical field

The utility model relates to the field of clean energy equipment, in particular to a sealing device for yaw of a wind power generator set and a wind power generator set.

Background technique

Generally, wind turbines are installed in areas with harsh environments, which require high overall sealing in the nacelle, especially offshore wind turbines or wind turbines installed in humid areas (such as Guizhou, Hainan, etc.). If the seal between the nacelle and the tower is not good, salt spray, humid air, sand and dust will enter the nacelle, resulting in accelerated corrosion of structural parts and electrical components.

At present, the yaw seals widely used in the cabin are hand seals and brushes. The problem with the hand-shaped sealing strip is that the sealing process is linear extrusion, and the sealing strip is rolled into an arc shape by external force at the installation site, and then stuck on the sealing ring. Due to the uneven force during yaw, it will cause wrinkles and wavy deformation of the hand-shaped sealing strip, which will cause the installation position of the sealing strip to deviate and cannot be inserted into the sealing ring. However, the hair brush is easily deformed and damaged, and the sealing effect is poor, so it cannot effectively prevent salt spray or rainwater from entering the engine room.

Utility model content

Embodiments of the utility model provide a sealing device for yaw of a wind turbine generator set and a wind turbine generator set, so as to solve the problem of poor sealing effect at the yaw position of the nacelle of the wind turbine generator set.

In order to achieve the above purpose, the embodiment of the present utility model provides a sealing device for yaw of wind power generating set, which includes a mounting part and a sealing part. , the mounting part is provided with a filler containing groove, the filler containing groove is provided with a sealing filler, the sealing member extends into the sealing filler, and at least one surface of the sealing member is in contact with the sealing filler to form a labyrinth sealing structure.

Optionally, the mounting part includes a bent part forming a filler receiving groove.

Optionally, the sealing filler includes an elastic solid block, the elastic solid block is in interference fit with the filler receiving groove, the sealing filler is provided with a groove, the sealing member extends into the groove, and interferes with the groove bottom of the groove Cooperate.

Optionally, there is a gap between the side walls of the groove and the side walls of the seal.

Optionally, the sealing filler includes a liquid filler, and the seal extends into the liquid filler.

Optionally, the sealing filler includes a granular filler, and the seal extends into the granular filler.

Optionally, the seal includes a transverse connecting section connected to the fixture and a sealing section inserted into the sealing filler.

According to another aspect of the present utility model, there is provided a wind power generating set including a tower, a yaw brake disc, a nacelle cover and a sealing device. The nacelle cover is connected, and the seal of the sealing device is connected with the yaw brake disc.

Optionally, a mounting flange is provided on the yaw brake disc, and the seal is connected to the mounting flange. According to the embodiment of the utility model, the sealing device for the yaw of the wind power generating set has a sealing packing which is arranged in the mounting part. It can realize the sealing between the nacelle cover and the fixed object, and can effectively prevent salt mist, sand and dust from entering the nacelle.

Description of drawings

Fig. 1 is a structural schematic diagram of a sealing device for yaw of a wind power generating set according to an embodiment of the present invention;

Fig. 2 is a structural schematic diagram of another sealing device for wind turbine yaw according to an embodiment of the present invention;

Fig. 3 is a schematic top view of the cooperation between the nacelle cover and the mounting part according to the embodiment of the present invention.

Explanation of reference signs:

1. Nacelle cover; 2. Yaw brake disc; 21. Mounting flange; 3. Tower; 4. Mounting piece; 41. Filling tank; 5. Sealing piece; 51. Transverse connection section; 52. Sealing section 6. Seal filler; 61. Groove.

detailed description

The yaw sealing device of the wind power generator set and the wind power generator set according to the embodiment of the present utility model will be described in detail below with reference to the accompanying drawings.

As shown in Figure 1, according to an embodiment of the present utility model, a sealing device for yaw of a wind turbine is provided, including a mounting part 4 and a sealing part 5, the mounting part 4 is connected to the nacelle cover 1, and the sealing part 5 is connected to the opposite On the rotating or stationary fixed object of the nacelle cover 1, the mounting part 4 is provided with a filler accommodating groove 41, and a sealing filler 6 is arranged in the filler accommodating groove 41, and the sealing member 5 extends into the sealing filler 6, and the sealing member At least one surface of 5 is in contact with sealing filler 6 and constitutes a labyrinth sealing structure.

The seal filler 6 for the yaw sealing device of the wind power generator set is arranged in the mounting part 4, and the seal filler 6 and the seal part 5 cooperate to form a labyrinth sealing structure, which can not only meet the rotation requirement of the wind power generator set when yawing, but also realize The seal between the nacelle cover 1 and the fixed object can effectively prevent salt mist, dust, etc. from entering the nacelle.

The labyrinth seal is a non-contact dynamic seal that uses several labyrinth tortuous channels to limit fluid or gas leakage. Leakage is reduced by the many tortuous chambers formed between the rotating and stationary parts. There is a gap between the rotating parts and the fixed parts using the labyrinth seal, no lubrication is required, thermal expansion is allowed, and it can adapt to high temperature, high pressure, and high speed frequency occasions.

For wind turbines, there are rotating parts (yaw brake disc) and fixed parts (nacelle cover) at the yaw, and there is relative rotation between them, which is in line with the motion mechanism of the labyrinth seal. In this design, the labyrinth seal is applied to the yaw seal, which can effectively prevent humid air, dust, etc. from entering the nacelle, and meet the sealing requirements between the nacelle and the tower.

Optionally, as shown in FIG. 1 , the cross-sectional shape of the mounting part 4 can be determined according to requirements. In this embodiment, the mounting part 4 includes a mounting plate and a bending part forming a filling groove 41. The mounting plate is used for Connected with the nacelle cover 1 , the bent piece is connected to the mounting plate, and forms a filler accommodating groove 41 by bending. In this embodiment, the combination of the mounting plate and the bending part of the mounting part 4 forms a "spoon"-shaped structure. In other embodiments, the installation part 4 may only include a bent part, and the shape of the bent part may be determined as required, such as an "L" shape, as long as the sealing filler 6 can be installed.

In this embodiment, the mounting plate of the mounting part 4 is arranged laterally on the nacelle cover 1 (flange, peripheral surface). The bent piece forming the filler receiving groove 41 is connected to the mounting plate, and is located between the nacelle cover 1 and the fixed object (the yaw brake disc 2 in this embodiment). The mounting part 4 is connected to the nacelle cover 1 by bolts, rivets or other link structures, and of course the mounting part 4 can also be fixed on the nacelle cover 1 by other means, such as bonding, welding, or making the mounting part 4 and the nacelle cover 1 into one.

The sealing member 5 includes a transverse connecting section 51 connected with the yaw brake disc 2 and a sealing section 52 inserted into the sealing filler 6 . In this embodiment, the sealing member 5 is L-shaped, of course, in other embodiments, the sealing member 5 may be of other structures, such as tongue-shaped or wedge-shaped sealing strips and the like.

Optionally, the sealing filler 6 includes an elastic solid block whose cross section is rectangular or other shapes adapted to the shape of the filler receiving groove 41 , and the elastic solid block is interference-fitted with the filler receiving groove 41 . A groove 61 is provided on the elastic solid block, and the sealing section 52 of the sealing member 5 extends into the groove 61 and is interference-fitted with the groove bottom of the groove 61 . Wherein, the elastic solid block can be a sealing rubber block, or a fixed block formed of other materials with a sealing function.

There is a gap between the side wall of the groove 61 and the side wall of the sealing member 5 . In other words, the width of the groove 61 is larger than the width of the sealing section 52 of the sealing member 5, so that the sealing member 5 and the sealing rubber block can fit in a gap, so that this gap can absorb the deformation of the nacelle cover 1 during use, and avoid In the prior art, due to uneven force during yaw, the hand-shaped sealing strips are wrinkled and deformed in waves, so that the installation position of the sealing strips deviates and cannot be snapped into the sealing ring of the nacelle cover 1 .

As shown in FIG. 1 , the groove 61 of the sealing filler 6 is opened on the top of the sealing filler 6 , so the sealing member 5 includes a sealing section 52 in order to cooperate with the groove 61 . As shown in FIG. 2 , the groove 61 of the sealing filler 6 is opened on the side of the sealing filler 6 , and the sealing member 5 is directly connected to the tower 3 and extends into the groove 61 .

Optionally, the sealing filler 6 may include a liquid filler, and the sealing member 5 extends into the liquid filler, and the liquid filler may be a sealing liquid such as oil.

Optionally, the sealing filling 6 includes granular filling, and the sealing member 5 protrudes into the granular filling, which may be sand or other granular or powder fillings.

According to another aspect of the present utility model, a kind of wind generating set is provided, and it comprises tower tube 3, yaw brake disc 2, nacelle cover 1 and sealing device, and sealing device is the above-mentioned sealing device for yaw of wind generating set, sealing The mounting part 4 of the device is connected to the nacelle cover 1 and the sealing part 5 of the sealing device is connected to the yaw brake disc 2 .

Optionally, a mounting flange 21 is provided on the yaw brake disc 2 , and the sealing member 5 is connected to the mounting flange 21 .

As shown in FIG. 3 , it is a schematic top view structure diagram of the cooperation between the nacelle cover and the mounting part according to the embodiment of the present invention. The mounting part 4 of the sealing device is circular and fixed to the flange structure at the bottom of the nacelle cover 1 by bolts. The sealing filler 6 can be made of soft wear-resistant material (such as EPDM, EPDM), and the groove 61 is formed by a groove in the middle. In the filling receiving groove 41 on the "scoop" shaped mounting part 4 . Design the yaw brake disc 2 as a structure with a mounting flange 21, and set bolt holes on the mounting flange 21, one end of the L-shaped seal 5 is connected with the yaw brake disc 2 through a bolt, and the other end extends into the seal The filler 6 is in the groove 61 and abuts against the bottom of the groove, and the L-shaped seal 5 has a certain amount of radial displacement in the groove 61 . The whole structure realizes the labyrinth seal between the nacelle cover 1 and the tower tube 3 . When the wind turbine is yawing, the lower end of the L-shaped sealing member 5 rubs against the sealing filler 6 to ensure the sealing effect between the nacelle cover 1 and the tower 3 during yawing.

This sealing structure is not only suitable for the dynamic seal on the wind turbine (such as the seal between the nacelle cover 1 and the tower 3), but also suitable for the air type static seal on the wind turbine (such as the seal between the nacelle cover 1 and the generator). between the seal, the seal between the shroud and the blade, etc.).

The yaw sealing device of the wind power generator set and the wind power generator set of the utility model have the following effects:

Adopting the labyrinth sealing scheme has a good sealing effect;

The friction part is not in direct contact with the nacelle cover or tower, avoiding surface damage caused by other installation schemes directly rubbing against key components such as the nacelle cover or tower;

The seal is in contact with the seal filler, and a groove is made on the seal filler to ensure that the seal moves in the groove and compensate for the seal failure caused by the deformation of the nacelle cover;

The sealing device has simple components, is easy to install, and is convenient to disassemble, and is not only suitable for onshore wind power generating sets, but also can meet the sealing requirements for wind power generating sets in offshore or humid areas.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field can easily think of changes or changes within the technical scope disclosed by the utility model Replacement should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (9)

1. a kind of sealing device for yaw of wind power generating set, is characterized in that, comprises mounting part (4) and sealing part (5), and described mounting part (4) is connected with nacelle cover (1), and described sealing part ( 5) Connected to a fixed object that rotates or is stationary relative to the nacelle cover (1), the mounting part (4) is provided with a filler accommodating groove (41), and the filler accommodating groove (41) is provided with A sealing filler (6), the sealing member (5) protrudes into the sealing filler (6), and at least one surface of the sealing member (5) is in contact with the sealing filler (6) and constitutes Labyrinth seal structure. 2. The sealing device for yawing of a wind power generating set according to claim 1, characterized in that, the mounting part (4) comprises a bent part forming the filler containing groove (41). 3. The sealing device for yaw of wind power generating set according to claim 1, characterized in that, the sealing filler (6) comprises an elastic solid block, and the elastic solid block and the filler containing groove (41) Interference fit, the seal filler (6) is provided with a groove (61), the seal (5) extends into the groove (61), and the groove of the groove (61) Bottom interference fit. 4. The sealing device for yaw of a wind power generating set according to claim 3, characterized in that there is a gap between the side wall of the groove (61) and the side wall of the sealing member (5). 5. The sealing device for wind turbine yaw according to claim 1, characterized in that, the sealing filler (6) includes a liquid filler, and the sealing member (5) extends into the liquid filler . 6. The sealing device for wind turbine yaw according to claim 1, characterized in that, the sealing filler (6) includes particle filler, and the sealing member (5) extends into the particle filler . 7. The sealing device for wind turbine yaw according to claim 1, characterized in that, the sealing member (5) comprises a transverse connection section (51) connected to the fixture and inserted into the sealing filler (6) sealing section (52). 8. A wind generating set, characterized in that it comprises a tower (3), a yaw brake disc (2), a nacelle cover (1) and a sealing device, and the sealing device is any one of claims 1 to 7 Said wind turbine yaw sealing device, the mounting part (4) of said sealing device is connected with said nacelle cover (1), the sealing part (5) of said sealing device is connected with said yaw brake disc ( 2) connect. 9. The wind power generating set according to claim 8, characterized in that, the yaw brake disc (2) is provided with a mounting flange (21), and the sealing member (5) is connected to the mounting flange (21) on.