CN216157830U

CN216157830U - Ventilation and heat dissipation device for hub of wind generating set

Info

Publication number: CN216157830U
Application number: CN202120698451.2U
Authority: CN
Inventors: 刁波; 章国军; 周亮
Original assignee: Shaoxing Elong Technology Co ltd
Current assignee: Shaoxing Elong Technology Co ltd
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2022-04-01
Anticipated expiration: 2031-04-07

Abstract

A ventilation and heat dissipation device for a hub of a wind generating set belongs to the technical field of wind generators; by arranging the first fan housing, the second fan housing and the air guide housing, an air inlet channel is reserved between the rear end of the first fan housing and the front end of the second fan housing, an air outlet channel is reserved between the front end of the air guide housing and the inner ring surface of the second fan housing, the first fan housing realizes that air blowing to the wind generating set is guided into the heat dissipation device through the air inlet channel, the air outlet channel can lead the redundant wind power out of the heat dissipation device, the wind guide cover can lead the wind blown into the heat dissipation device into the wind guide pipe, the cooling of the hub of the wind generating set is realized, by arranging the gear ring, the intermediate gear and the pinion, the rotation of the primary fan is opposite to that of the secondary fan, thereby utilizing the rotational flow passing through the primary fan to pressurize the secondary fan, leading the secondary fan to have higher air compression efficiency, therefore, the air flow rate is improved, the air quantity flowing into the hub of the wind generating set is increased, and the heat dissipation efficiency of the wind generating set is improved.

Description

Ventilation and heat dissipation device for hub of wind generating set

Technical Field

The utility model belongs to the technical field of wind driven generators, and particularly relates to a ventilation and heat dissipation device for a hub of a wind driven generator set.

Background

The hub of the wind generating set comprises a variable pitch control cabinet, a capacitor, a charger, a variable pitch motor and other electrical equipment, wherein the electrical equipment generates a large amount of heat in the variable pitch process of the fan, and the electrical equipment heats air in the hub. Although all be equipped with radiator fan in switch board, electric capacity cabinet, because the air that gets into the switch board still is the interior high temperature air of wheel hub, especially in high temperature area, the air in the wheel hub can reach more than 60 ℃, can not play the cooling effect to the equipment that generates heat in the switch board, consequently, only reduce the temperature in the wheel hub can guarantee that the air that gets into in the switch board is cold air.

At present, a hub heat dissipation device of a wind generating set is not applied much, and particularly in a high-temperature area, the shutdown frequency of a fan is increased due to the fault of overhigh temperature of the hub. Patent CN 201908782U proposes a wind turbine generator system with a hub and nacelle air exchange device, wherein a centrifugal blower is installed on the inner wall of the hub connected to the main shaft, and the air inlet of the centrifugal blower is opposite to the air vent on the flange of the main shaft, so as to achieve the purpose of exchanging air between the hub and the nacelle.

Disclosure of Invention

The utility model mainly solves the technical problems in the prior art and provides a ventilation and heat dissipation device for a hub of a wind generating set.

The technical problem of the utility model is mainly solved by the following technical scheme: a ventilation and heat dissipation device for a hub of a wind generating set comprises a supporting main shaft, wherein a plurality of first supporting frames are annularly arranged at the front end part of the supporting main shaft in an array manner, a plurality of second supporting frames are arranged on the supporting main shaft at the rear side of the first supporting frames in an annular array manner, each first supporting frame comprises an axial connecting part and a radial connecting part, a first fan cover is arranged at the front end of the supporting main shaft and is coaxially connected to the front end of the supporting main shaft, the front ends of the axial connecting parts in the plurality of first supporting frames are fixedly connected to the inner ring surface of the first fan cover, a second fan cover is sleeved on the outer side of the first fan cover, an opening at the front end of the second fan cover covers the rear end of the first fan cover, an air inlet channel is reserved between the rear end of the first fan cover and the front end of the second fan cover, and the outer ends of the radial connecting parts in the plurality of the first supporting frames are fixedly connected to the inner end surface of the second fan cover, an air guide cover is arranged on the rear side of the first fan cover in the second fan cover, the diameter of the front end of the air guide cover is larger than that of the rear end of the first fan cover, an air outlet channel is reserved between the front end of the air guide cover and the inner ring surface of the second fan cover, the wind scooper is in an inverted cone shape with a big front and a small back, the front end of the wind scooper is clamped on the radial connecting parts in the first support frames, the outer ends of the second support frames are fixedly connected with the inner ring surface of the wind scooper, the rear end of the wind scooper is fixedly connected with a first connecting flange, the rear side of the wind scooper is provided with a wind guide pipe, the front end of the air guide pipe is fixedly connected with a second connecting flange matched with the first connecting flange, the air guide pipe comprises a large duct and a small duct, the supporting main shaft at the rear end of the second supporting frame is provided with third supporting frames in an annular array mode, and the outer ends of the third supporting frames are fixedly connected to the inner ring face of the large duct.

Preferably, a plurality of support main shafts at the rear sides of the third support frames are rotatably connected with a group of primary fans through bearings, gear rings are coaxially and fixedly connected with the rear ends of the primary fans, a triangular plate is fixedly connected with the rear ends of the support main shafts, three intermediate gears are arranged at three corners of the triangular plate respectively and are meshed with the gear rings.

Preferably, a rotating shaft is arranged on the rear side of the supporting main shaft in the small duct, the rotating shaft and the supporting main shaft are coaxially arranged, a pinion is arranged at the front end of the rotating shaft, and the pinion is simultaneously meshed with the three intermediate gears.

Preferably, two connecting sleeves are arranged on a rotating shaft at the rear end of the pinion, the two connecting sleeves are rotatably connected with the rotating shaft, a plurality of fourth supporting frames are arranged on the connecting sleeves in an annular array mode, the outer ends of the plurality of fourth supporting frames on the front side are fixedly connected to the inner ring surface of the large duct, the outer ends of the plurality of fourth supporting frames on the rear side are fixedly connected to the inner ring surface of the small duct, and three groups of secondary fans are fixedly connected to the rotating shaft between the two connecting sleeves.

Preferably, the blades of the primary fan and the blades of the secondary fan are arranged in opposite directions.

The utility model has the following beneficial effects: the first fan cover is used for guiding the wind blowing to the wind generating set into the heat dissipation device through the air inlet channel, the air outlet channel is used for guiding the redundant wind out of the heat dissipation device, the wind guide cover is used for guiding the wind blowing into the heat dissipation device into the wind guide pipe to cool the hub of the wind generating set, the gear ring, the intermediate gear and the pinion are arranged, the intermediate gear is driven to rotate forward by the forward rotation of the gear ring, the pinion is driven to rotate backward by the forward rotation of the intermediate gear, so that the rotating shaft is driven to rotate backward, the primary fan and the secondary fan are arranged in a reverse direction, so that the secondary fan is pressurized by using the rotational flow passing through the primary fan, the secondary fan has higher air compression efficiency, so that the air flow rate is improved, the air quantity flowing into the hub of the wind generating set is increased, and the heat dissipation efficiency of the wind generating set is improved.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of a front view of the present invention;

fig. 3 is an enlarged schematic view of a portion a in fig. 1.

In the figure: 1. supporting the main shaft; 2. a first support frame; 3. a second support frame; 4. an axial connection; 5. a radial connecting portion; 6. a first fan housing; 7. a second fan housing; 8. an air inlet channel; 9. a wind scooper; 10. an air outlet channel; 11. a first connecting flange; 12. an air guide pipe; 13. a second connecting flange; 14. a large duct; 15. a small duct; 16. a third support frame; 17. a primary fan; 18. a ring gear; 19. a set square; 20. an intermediate gear; 21. a rotating shaft; 22. a pinion gear; 23. connecting sleeves; 24. a fourth support frame; 25. a secondary fan.

Detailed Description

The technical scheme of the utility model is further specifically described by the following embodiments and the accompanying drawings.

Example (b): a ventilation and heat dissipation device for a hub of a wind generating set comprises a supporting main shaft 1, wherein a plurality of first supporting frames 2 are annularly arranged at the front end of the supporting main shaft 1 in an array mode, a plurality of second supporting frames 3 are arranged on the supporting main shaft 1 at the rear side of each first supporting frame 2 in an annular array mode, each first supporting frame 2 comprises an axial connecting portion 4 and a radial connecting portion 5, a first fan cover 6 is arranged at the front end of the supporting main shaft 1, the first fan cover 6 is coaxially connected to the front end of the supporting main shaft 1, the front ends of the axial connecting portions 4 in the first supporting frames 2 are fixedly connected to the inner ring surface of the first fan cover 6, a second fan cover 7 is sleeved on the outer side of the first fan cover 6, the front end of the second fan cover 7 covers the rear end of the first fan cover 6, and an air inlet 8 is reserved between the rear end of the first fan cover 6 and the front end of the second fan cover 7, the outer ends of the radial connecting portions 5 in the first support frames 2 are fixedly connected to the inner end face of the second fan housing 7, an air guiding housing 9 is arranged on the rear side of the first fan housing 6 inside the second fan housing 7, the diameter of the front end of the air guiding housing 9 is larger than that of the rear end of the first fan housing 6, an air outlet duct 10 is reserved between the front end of the air guiding housing 9 and the inner ring face of the second fan housing 7, the air outlet duct 10 is reserved between the front end of the air guiding housing 9 and the inner ring face of the second fan housing 7 by arranging the first fan housing 6, the second fan housing 7 and the air guiding housing 9, an air inlet duct 8 is reserved between the rear end of the first fan housing 6 and the front end of the second fan housing 7, the first fan housing 6 guides the air blowing to the wind generating set into the heat dissipating device through the air inlet duct 8, the air outlet duct 10 can guide the redundant wind out of the wind dissipating device, and the air guiding housing 9 can guide the wind blowing into the heat dissipating device into the air guiding duct 12, the cooling of the wind generating set hub is realized, the wind scooper 9 is in an inverted cone shape with a large front part and a small back part, the front end of the wind scooper 9 is clamped on the radial connecting parts 5 in the first support frames 2, the outer ends of the second support frames 3 are fixedly connected with the inner ring surface of the wind scooper 9, the rear end of the wind scooper 9 is fixedly connected with a first connecting flange 11, the rear side of the wind scooper 9 is provided with a wind guide pipe 12, the front end of the wind guide pipe 12 is fixedly connected with a second connecting flange 13 matched with the first connecting flange 11, the wind guide pipe 12 comprises a large duct 14 and a small duct 15, the support main shaft 1 at the rear end of the second support frame 3 is provided with third support frames 16 in an annular array, and the outer ends of the third support frames 16 are fixedly connected with the inner ring surface of the large duct 14.

A group of primary fans 17 is rotatably connected to the supporting main shaft 1 at the rear side of the third supporting frames 16 through bearings, a gear ring 18 is coaxially and fixedly connected to the rear end of each primary fan 17, a triangular plate 19 is fixedly connected to the rear end of each supporting main shaft 1, three corners of each triangular plate 19 are respectively provided with an intermediate gear 20, and the three intermediate gears 20 are all meshed with the gear ring 18; a rotating shaft 21 is arranged at the rear side of the supporting main shaft 1 in the small duct 15, the rotating shaft 21 and the supporting main shaft 1 are coaxially arranged, a pinion 22 is arranged at the front end of the rotating shaft 21, and the pinion 22 is simultaneously meshed with the three intermediate gears 20.

Two connecting sleeves 23 are arranged on the rotating shaft 21 at the rear end of the pinion 22, the two connecting sleeves 23 are both rotationally connected with the rotating shaft 21, a plurality of fourth supporting frames 24 are arranged on the connecting sleeves 23 in an annular array, the outer ends of the plurality of fourth supporting frames 24 at the front side are all fixedly connected to the inner ring surface of the large duct 14, the outer ends of the plurality of fourth supporting frames 24 at the rear side are all fixedly connected to the inner ring surface of the small duct 15, three groups of secondary fans 25 are fixedly connected to the rotating shaft 21 between the two connecting sleeves 23, the forward rotation of the gear ring 18 drives the intermediate gear 20 to rotate forward, the forward rotation of the intermediate gear 20 drives the reverse rotation of the pinion 22 to drive the rotating shaft 21 to rotate reversely, the primary fan 17 and the secondary fan 25 are arranged reversely, so that the secondary fan 25 is pressurized by using the rotational flow passing through the primary fan 17, the secondary fan 25 has higher air compression efficiency, so that the air flow rate is improved, the air quantity flowing into the hub of the wind generating set is increased, and the heat dissipation efficiency of the wind generating set is improved; the primary fan 17 is disposed opposite the blades of the secondary fan 25.

Finally, it should be noted that the above embodiments are merely representative examples of the present invention. It is obvious that the utility model is not limited to the above-described embodiments, but that many variations are possible. Any simple modification, equivalent change and modification made to the above embodiments in accordance with the technical spirit of the present invention should be considered to be within the scope of the present invention.

Claims

1. The utility model provides a ventilation cooling device of wind generating set wheel hub, includes support main shaft (1), its characterized in that: the supporting main shaft comprises a supporting main shaft (1), wherein a plurality of first supporting frames (2) are annularly arranged at the front end of the supporting main shaft (1) in an array mode, a plurality of second supporting frames (3) are arranged on the supporting main shaft (1) on the rear side of the first supporting frames (2) in an annular mode, each first supporting frame (2) comprises an axial connecting portion (4) and a radial connecting portion (5), a first fan cover (6) is arranged at the front end of the supporting main shaft (1), the first fan cover (6) is coaxially connected to the front end of the supporting main shaft (1), the front ends of the axial connecting portions (4) in the first supporting frames (2) are fixedly connected to the inner ring face of the first fan cover (6), a second fan cover (7) is sleeved on the outer side of the first fan cover (6), a front end opening of the second fan cover (7) covers the rear end of the first fan cover (6), and an air inlet (8) is reserved between the rear end of the first fan cover (6) and the front end of the second fan cover (7), the outer ends of the radial connecting parts (5) in the first support frames (2) are fixedly connected to the inner end face of the second fan cover (7), a wind scooper (9) is arranged on the rear side of the first fan cover (6) in the second fan cover (7), the diameter of the front end of the wind scooper (9) is larger than that of the rear end of the first fan cover (6), a wind outlet channel (10) is reserved between the front end of the wind scooper (9) and the inner ring face of the second fan cover (7), the wind scooper (9) is in an inverted cone shape with a large front part and a small rear part, the front end of the wind scooper (9) is clamped on the radial connecting parts (5) in the first support frames (2), the outer ends of the second support frames (3) are fixedly connected to the inner ring face of the wind scooper (9), the rear end of the wind scooper (9) is fixedly connected with a first connecting flange (11), and a duct (12) is arranged on the rear side of the wind scooper (9), the front end of the air guide pipe (12) is fixedly connected with a second connecting flange (13) matched with the first connecting flange (11), the air guide pipe (12) comprises a large duct (14) and a small duct (15), third support frames (16) are arranged on the supporting main shaft (1) at the rear end of the second support frame (3) in an annular array mode, and the outer ends of the third support frames (16) are fixedly connected to the inner ring surface of the large duct (14).

2. The ventilation and heat dissipation device for the hub of the wind generating set according to claim 1, wherein: it is a plurality of there is a set of one-level fan (17) through bearing swivelling joint on the support main shaft (1) of third support frame (16) rear side, the coaxial fixedly connected with ring gear (18) of rear end of one-level fan (17), the rear end fixedly connected with of support main shaft (1) set-square (19), the three edge of set-square (19) respectively is equipped with an intermediate gear (20), and is three intermediate gear (20) all mesh with ring gear (18).

3. The ventilation and heat dissipation device for the hub of the wind generating set according to claim 2, wherein: the rear side of a supporting main shaft (1) in the small duct (15) is provided with a rotating shaft (21), the rotating shaft (21) and the supporting main shaft (1) are coaxially arranged, the front end of the rotating shaft (21) is provided with a pinion (22), and the pinion (22) is meshed with three intermediate gears (20) simultaneously.

4. The ventilation and heat dissipation device for the hub of the wind generating set according to claim 3, wherein: be equipped with two adapter sleeves (23), two on rotation axis (21) of pinion (22) rear end adapter sleeve (23) all with rotation axis (21) swivelling joint, annular array is provided with a plurality of fourth support frames (24) on adapter sleeve (23), the front side the equal fixed connection in the inner circle face of big duct (14) in the outer end of a plurality of fourth support frames (24), the rear side the equal fixed connection in the inner circle face of little duct (15) in the outer end of a plurality of fourth support frames (24), two fixedly connected with three groups of second grade fans (25) on rotation axis (21) between adapter sleeve (23).

5. The ventilation and heat dissipation device for the hub of the wind generating set according to claim 4, wherein: the fan blades of the primary fan (17) and the secondary fan (25) are arranged in the opposite direction.