CN215979702U

CN215979702U - Wind turbine generator set with gravity center moving downwards

Info

Publication number: CN215979702U
Application number: CN202122589236.1U
Authority: CN
Inventors: 曾利华; 张国; 郭辰; 蔡安民
Original assignee: Huaneng Clean Energy Research Institute
Current assignee: Huaneng Clean Energy Research Institute
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-03-08
Anticipated expiration: 2031-10-26

Abstract

The utility model discloses a wind turbine generator with a downward gravity center, which comprises a wind turbine generator, a fan tower, a transmission vertical shaft, a gearbox input shaft, a thrust bearing, a ball bearing, a bearing frame, a bevel gear, a coupler and the like. Power captured by the fan is transmitted to the input shaft of the gearbox through the coupler, then the bevel gear fixed on the input shaft is matched with the bevel gear fixed on the shell of the gearbox, power steering is achieved for 90 degrees, and then the power is transmitted to the vertical transmission shaft through the gears. The transmission vertical shaft is connected with a generator fixed at the bottom of the tower barrel to push the generator to rotate. The wind turbine generator is moved to the bottom of the tower, and the aim of downward movement of the gravity center of the wind turbine generator is fulfilled.

Description

Wind turbine generator set with gravity center moving downwards

Technical Field

The utility model belongs to the field of wind power, and particularly relates to a wind turbine generator with a gravity center moving downwards.

Background

The green development and the high-efficiency development become the future direction of energy system construction. Among the current green electricity technologies, wind power generation is one of the most important technologies. From the development trend of wind turbine generators, the diameter of an impeller is larger and larger, the capacity of a single machine is larger and larger, and the height of a tower barrel is higher and higher. The weight of wind turbines is also increasing. Along with the increase of weight and the promotion of tower section of thick bamboo height, the wind turbine generator system power generation system focus shifts up gradually, and this greatly increased the design degree of difficulty of fan tower section of thick bamboo. At present, the time of the fan tower collapse accident is reported to the terminals. The mass of the wind turbine generator is too large, and the gravity center of the wind turbine system is higher, which is one of important factors causing accidents.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a wind turbine generator with a downward gravity center, and aims to solve the problem that the wind turbine generator system in the prior art is easy to cause a wind turbine tower collapse accident because the gravity center gradually moves upward.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a wind turbine generator with a gravity center moving downwards comprises a generator part, a fan tower, a transmission vertical shaft and a power generation part; the unit part is mounted at the top of the fan tower cylinder, the transmission vertical shaft is mounted inside the fan tower cylinder, and the power generation part is mounted at the bottom inside the fan tower cylinder; the unit part is connected with the power generation part through the transmission vertical shaft

The unit part comprises a case shell, and a fan power output shaft and a gear case shell are arranged in the case shell; a gearbox input shaft, a first gear, a second gear, a steering shaft, a first bevel gear and a second bevel gear are arranged in the gearbox shell; the first end of the power output shaft of the fan is connected with the first end of the input shaft of the gearbox, and the second end of the input shaft of the gearbox is fixedly connected with the second bevel gear; the first bevel gear is fixed on the steering shaft and meshed with the second bevel gear;

the first gear is arranged on the top of the transmission vertical shaft, the second gear is fixed at the lower end of the steering shaft, and the first gear is meshed with the second gear; the bottom of the transmission vertical shaft is connected with the power generation part.

Optionally, the power generation part comprises a generator, and a generator input shaft of the generator is connected with the bottom of the transmission vertical shaft.

Optionally, the fan power output shaft is fixed on the case housing through a first thrust bearing bracket and a first thrust bearing.

Optionally, a first coupling is connected between the fan power output shaft and the gearbox input shaft.

Optionally, the gearbox input shaft is fixed on a third ball bearing frame through a first ball bearing, a second ball bearing and a ball bearing fixing sleeve, and the third ball bearing frame is fixed on the gearbox shell.

Optionally, the steering shaft is vertically arranged in a gear box shell; the top of the steering shaft is arranged on the gearbox shell through a fourth ball bearing and a second ball bearing frame; the bottom of the steering shaft is arranged on the gearbox shell through a second thrust bearing and a second thrust bearing frame.

Optionally, the top of the transmission vertical shaft is connected with the top of the fan tower through a third ball bearing and a first ball bearing frame; the bottom of the transmission vertical shaft is connected with the bottom of the fan tower barrel through a third thrust bearing and a third thrust bearing frame.

Optionally, a second coupling is connected between the generator input shaft of the generator and the transmission vertical shaft.

The utility model has the following beneficial effects:

1) aiming at the current wind turbine generator with a higher gravity center, the utility model designs the wind turbine generator, and partial equipment originally arranged in the fan is moved down to the bottom of the tower barrel, so that the aim of lowering the gravity center is fulfilled.

2) The wind turbine generator comprises a wind turbine generator, a fan tower, a transmission vertical shaft, a gearbox input shaft, a thrust bearing, a ball bearing, a bearing frame, a bevel gear, a coupler and the like. Power captured by the fan is transmitted to the input shaft of the gearbox through the coupler, then the bevel gear fixed on the input shaft is matched with the bevel gear fixed on the shell of the gearbox, power steering is achieved for 90 degrees, and then the power is transmitted to the vertical transmission shaft through the gears. The transmission vertical shaft is connected with a generator fixed at the bottom of the tower barrel to push the generator to rotate. The wind turbine generator is moved to the bottom of the tower, and the aim of downward movement of the gravity center of the wind turbine generator is fulfilled.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is an overall structural view of a wind turbine generator with a center of gravity shifted down according to an embodiment of the present invention.

Fig. 2 is a detailed view of region a of fig. 1.

Fig. 3 is a detailed view of region B of fig. 1.

Wherein: 1, a unit part; 2, a fan tower cylinder; 3, driving the vertical shaft; 4 a chassis housing; 5 a first thrust bearing bracket; 6 a first thrust bearing; 7, a power output shaft of the fan; 8, a first coupling; 9 a gearbox input shaft; 10 a first ball bearing; 11 a second ball bearing; 12 a third ball bearing; 13 a first ball bearing frame; 14 a first gear; 15 a second gear; 16 a second thrust bearing bracket; 17 a second thrust bearing; 18 a steered shaft; 19 a fourth ball bearing; 20 a second ball bearing housing; 21 a first bevel gear; 22 a second bevel gear; 23 ball bearing fixing sleeves; 24 a third ball bearing housing; 25 gearbox housing; 26 a third thrust bearing; 27 a third thrust bearing frame; 28 a second coupling; 29 generator input shaft; 30 generator.

Detailed Description

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The following detailed description is exemplary in nature and is intended to provide further details of the utility model. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model.

The embodiment of the utility model provides a wind turbine generator with a downward gravity center, which is characterized in that part of equipment originally arranged in a fan is moved downward to the bottom of a tower barrel, so that the aim of lowering the gravity center is fulfilled.

As shown in figure 1, the wind turbine generator with the gravity center moving downwards comprises a generator part 1, a fan tower 2, a transmission vertical shaft 3 and a power generation part; the unit part 1 is arranged at the top of the fan tower cylinder 2, the transmission vertical shaft 3 is arranged inside the fan tower cylinder 2, and the power generation part is arranged at the bottom position inside the fan tower cylinder 2; the unit part 1 is connected with the power generation part through a transmission vertical shaft 3.

In an alternative embodiment of the utility model, as shown in fig. 2 and 3, the unit section 1 comprises a housing 4, the housing 4 having a fan power take-off shaft 7 and a gear housing 25 mounted therein; the gearbox housing 25 houses the gearbox input shaft 9, the first gear 14, the second gear 15, the steered shaft 18, the first bevel gear 21 and the second bevel gear 22.

In the specific embodiment of the utility model, the first end of the power output shaft 7 of the fan is connected with the first end of the input shaft 9 of the gearbox, and the second end of the input shaft 9 of the gearbox is fixedly connected with the second bevel gear 22 through tight fit; the first bevel gear 21 is fixed to the steered shaft 18 by tight fitting and meshes with the second bevel gear 22.

As an example, the fan power output shaft 7 is fixed to the chassis case 4 through a first thrust bearing bracket 5 and a first thrust bearing 6, specifically, the first thrust bearing bracket 5 is fixed to the chassis case 4, the first thrust bearing 6 is mounted on the first thrust bearing bracket 5, and the fan power output shaft 7 is connected to the first thrust bearing 6.

As an example, a first coupling 8 is connected between the fan power take-off shaft 7 and the gearbox input shaft 9.

As an example, the transmission input shaft 9 is fixed to a third ball bearing carrier 24 by means of a first ball bearing 10, a second ball bearing 11 and a ball bearing fixing sleeve 23, the third ball bearing carrier 24 being fixed to the gearbox housing 25.

In the specific embodiment of the utility model, the first gear 14 is arranged on the top of the transmission vertical shaft 3 through tight fit, the second gear 15 is fixed at the lower end of the steering shaft 18 through tight fit, and the first gear 14 is meshed with the second gear 15; the top of the transmission vertical shaft 3 is connected with the top of the fan tower 2 through a third ball bearing 12 and a first ball bearing frame 13; the bottom of the transmission vertical shaft 3 is connected with the bottom of the fan tower 2 through a third thrust bearing 26 and a third thrust bearing frame 27.

As an example, the steered shaft 18 is vertically disposed through the gear case housing 25; the top of the steering shaft 18 is arranged on the gearbox shell 25 through a fourth ball bearing 19 and a second ball bearing frame 20; the bottom of the direction changing shaft 18 is mounted on the gear box housing 25 through a second thrust bearing 17 and a second thrust bearing bracket 16.

In the embodiment of the utility model, the power generation part comprises a generator 30, and a generator input shaft 29 of the generator 30 is connected with the bottom of the transmission vertical shaft 3.

As an example, a second coupling 28 is connected between the generator input shaft 29 of the generator 30 and the vertical transmission shaft 3.

The utility model relates to a working method of a wind turbine generator with a downward gravity center, which comprises the following steps:

the power output shaft 7 of the fan transmits the power captured by the fan to the input shaft 9 of the gearbox, the input shaft 9 of the gearbox realizes the power steering of 90 degrees through a second bevel gear 22 and a first bevel gear 21 which are meshed with each other, a second gear 15 on the steering shaft 18 is meshed with a first gear 14 fixed on the transmission vertical shaft 3, the power is transmitted to the transmission vertical shaft 3, and in the meshing process of the gears, besides the power transmission, the speed change can be realized; the lower part of the transmission vertical shaft 3 is connected with a generator input shaft 29 through a second coupler 28 to drive a generator 30 to generate electricity.

It will be appreciated by those skilled in the art that the utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the utility model are intended to be embraced therein.

Claims

1. A wind turbine generator with a gravity center moving downwards is characterized by comprising a generator unit part (1), a fan tower cylinder (2), a transmission vertical shaft (3) and a power generation part; the unit part (1) is mounted at the top of the fan tower cylinder (2), the transmission vertical shaft (3) is mounted inside the fan tower cylinder (2), and the power generation part is mounted at the bottom in the fan tower cylinder (2); the unit part (1) is connected with the power generation part through the transmission vertical shaft (3);

the unit part (1) comprises a case shell (4), and a fan power output shaft (7) and a gear case shell (25) are installed in the case shell (4); a gearbox input shaft (9), a first gear (14), a second gear (15), a steering shaft (18), a first bevel gear (21) and a second bevel gear (22) are arranged in the gearbox shell (25); the first end of the fan power output shaft (7) is connected with the first end of the gearbox input shaft (9), and the second end of the gearbox input shaft (9) is fixedly connected with the second bevel gear (22); the first bevel gear (21) is fixed on the steering shaft (18) and meshed with the second bevel gear (22);

the first gear (14) is arranged at the top of the transmission vertical shaft (3), the second gear (15) is fixed at the lower end of the steering shaft (18), and the first gear (14) is meshed with the second gear (15); the bottom of the transmission vertical shaft (3) is connected with the power generation part.

2. Wind turbine generator set with downward centre of gravity according to claim 1, characterised in that the power generation part comprises a generator (30), and a generator input shaft (29) of the generator (30) is connected with the bottom of the transmission vertical shaft (3).

3. The wind turbine generator with the downward gravity center according to claim 1, wherein the fan power output shaft (7) is fixed on the machine case (4) through a first thrust bearing bracket (5) and a first thrust bearing (6).

4. The wind turbine generator set with the downward gravity center according to claim 1, wherein a first coupling (8) is connected between the fan power output shaft (7) and the gearbox input shaft (9).

5. The wind turbine generator with downward gravity according to claim 1, wherein the transmission input shaft (9) is fixed on a third ball bearing bracket (24) through a first ball bearing (10), a second ball bearing (11) and a ball bearing fixing sleeve (23), and the third ball bearing bracket (24) is fixed on a gearbox housing (25).

6. The wind turbine generator with the downward center of gravity according to claim 1, wherein the steering shaft (18) is vertically arranged in a gearbox housing (25); the top of the steering shaft (18) is arranged on a gear box shell (25) through a fourth ball bearing (19) and a second ball bearing frame (20); the bottom of the steering shaft (18) is arranged on a gear box shell (25) through a second thrust bearing (17) and a second thrust bearing frame (16).

7. The wind turbine generator set with the downward gravity center according to claim 1, wherein the top of the transmission vertical shaft (3) is connected with the top of the fan tower (2) through a third ball bearing (12) and a first ball bearing frame (13); the bottom of the transmission vertical shaft (3) is connected with the bottom of the fan tower drum (2) through a third thrust bearing (26) and a third thrust bearing frame (27).

8. Wind turbine generator set with downward centre of gravity according to claim 2, characterised in that a second coupling (28) is connected between the generator input shaft (29) of the generator (30) and the vertical transmission shaft (3).