CN214577524U

CN214577524U - Horizontal shaft permanent magnet direct-drive wind power generation system of speed-increasing pipe barrel

Info

Publication number: CN214577524U
Application number: CN202021417972.8U
Authority: CN
Inventors: 董应民; 沈光; 吴飞; 汪旭
Original assignee: Wuxi Jinscorpio Industry Co ltd
Current assignee: Wuxi Jinscorpio Industry Co ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-11-02
Anticipated expiration: 2030-07-17

Abstract

The utility model discloses a wind power generation system is directly driven to acceleration rate bobbin horizontal axis permanent magnetism, it includes the mounting bracket, impeller assembly, coupling assembling, the electricity generation subassembly with gather wind acceleration rate subassembly, coupling assembling includes the dabber, first bearing and flange, the fixed setting in the mounting bracket top in both ends of dabber, the fixed first bearing that sets up in the middle of the dabber, impeller assembly installs at the spindle through first bearing, impeller assembly lug connection electricity generation subassembly, it sets up in impeller assembly's the outside and impeller assembly is located the center of gathering wind acceleration rate subassembly to gather wind acceleration rate subassembly, it installs at the spindle to gather wind acceleration rate subassembly fixed mounting. The utility model discloses have and be applied to low wind speed environment, rational in infrastructure, light in weight, intensity height, be convenient for install the beneficial effect of transportation.

Description

Horizontal shaft permanent magnet direct-drive wind power generation system of speed-increasing pipe barrel

Technical Field

The utility model relates to a wind power generation technical field, more specifically relate to an acceleration rate bobbin horizontal axis permanent magnetism directly drives wind power generation system.

Background

With the development of urbanization and industrialization, the demand for energy is increasing day by day, safer, guaranteed, economic and environment-friendly energy is urgently needed in all parts of the world, and the active development and utilization of new energy can help to reduce the carbon emission in the world. Wind energy is a renewable clean energy source, and the main utilization form of the wind energy is to convert the wind energy into electric energy through a wind turbine. At present, the single-machine power generation power of a large-scale wind turbine power generation field is gradually increased at first, however, the size of the wind turbine blade is also sharply increased along with the increase of the single-machine power generation power, and higher requirements on the aspects of the structural strength, the production process and the like of the blade are provided.

The wind energy belongs to renewable clean energy, and the active utilization of the wind energy is beneficial to carbon emission reduction, reduces the dependence on fossil energy and improves the level of energy safety guarantee in China. With the coming of the era of price-balancing bidding of wind power, various new technologies with cost reduction or efficiency improvement are emerging continuously in order to reduce the power consumption cost. With the increasing power of a single wind generator, the size of the blades of the wind generator is larger and the tower is higher in order to obtain more wind energy.

As is well known, the power of a wind driven generator is in direct proportion to the cube of the incoming wind speed, and a speed-increasing tube type wind driven generator is a product of combining the wind driven generator and a speed-increasing tube, and the power of the wind driven generator is increased by 1.728 to 8 times by increasing the remote incoming wind speed by 1.2 to 2 times by utilizing the speed-increasing effect of the speed-increasing tube. In addition, the speed-increasing pipe barrel wind driven generator is suitable for low wind speed environments, widens the wind speed application range of the wind driven generator, and has higher economic and social benefits.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model aims to provide a speed-up bobbin horizontal axis permanent magnetism direct drive wind power generation system who is applied to low wind speed environment, rational in infrastructure, light in weight, intensity height, be convenient for installation transportation.

According to the utility model discloses an aspect provides an acceleration rate bobbin horizontal axis permanent magnetism directly drives wind power generation system, it includes the mounting bracket, the impeller subassembly, coupling assembling, the electricity generation subassembly with gather wind acceleration rate subassembly, coupling assembling includes the dabber, first bearing and flange, the fixed setting in the mounting bracket top in both ends of dabber, the fixed first bearing that sets up in the centre of dabber, the impeller subassembly is installed at the spindle through first bearing, impeller subassembly lug connection electricity generation subassembly, it sets up in the outside of impeller subassembly and the impeller subassembly is located the center that gathers wind acceleration rate subassembly to gather wind acceleration rate subassembly, it installs at the spindle to gather wind acceleration rate subassembly fixed mounting.

In some embodiments, the mounting frame includes a first support, a second support, a support platform, a first yaw bearing and a second yaw bearing, the first support and the second support are vertically fixed on the support platform, the first support and the second support are symmetrically arranged, the first yaw bearing is arranged at the top of the support platform, and the second yaw bearing is arranged at the bottom of the support platform.

In some embodiments, the mandrel is fixed on top of and connects the first stent and the second stent.

In some embodiments, the impeller assembly comprises a hub mounted on the outside of the first bearing and at least 3 blades fixedly mounted on the hub.

In some embodiments, the power generation assembly comprises a permanent magnet direct-drive wind driven generator and an external rotor, the external rotor is connected with a hub and the permanent magnet direct-drive wind driven generator, the permanent magnet direct-drive wind driven generator is fixedly connected with a mandrel through a flange, and the hub drives the external rotor to rotate.

In some embodiments, the wind gathering and speed increasing assembly comprises a profile frame, a skin, a trailing edge gradient and a support rod component, wherein the profile frame is annular, the skin is riveted on the profile frame, the air inlet of the profile frame is provided with the trailing edge gradient, and the inner side of the profile frame is connected with the mandrel through the support rod component.

In some embodiments, the support rod part includes a first main support rod, a second main support rod, a first diagonal support rod and a second diagonal support rod, the first main support rod is provided with a plurality of main support rods, the first main support rod is arranged at the air inlet and connects the inner wall of the profile frame and the mandrel, and the first diagonal support rod is connected between the first main support rods;

the second main support rods are arranged at the air outlet and are connected with the inner wall of the profile frame and the mandrel, and the second diagonal support rods are connected between the second main support rods.

In some embodiments, the support platform is mounted on top of the support tower by a first yaw bearing and a second yaw bearing.

The utility model relates to a speed-up bobbin horizontal axis permanent magnetism directly drives wind power generation system adopts following technical scheme: a horizontal shaft wind power generation system of a speed-increasing pipe barrel comprises three blades, an outer rotor permanent magnet direct-drive wind power generator, a mandrel, a surrounding speed-increasing pipe barrel, a supporting rod in the pipe barrel, a support and a support platform. The three blades are connected to the impeller through bolts, the stator of the outer rotor permanent magnet direct-drive wind driven generator is connected to the core shaft through bolts, and the core shaft is fixedly connected with the support rod in the pipe barrel to support the whole pipe barrel. The mandrel is fixedly connected with the support and is used for supporting the whole pipe barrel and the wind generating set, the support is fixedly connected with the support platform, and the support platform is connected with the tower barrel through a yaw bearing. The wind generating set is arranged on the inner core shaft of the wind collecting cover, the rotation axis of the wind generating set is superposed with the axis of the speed increasing pipe barrel, and the rotation plane of the wind generating set is superposed with the center of the minimum section of the speed increasing pipe barrel.

Due to the acceleration function of the acceleration pipe barrel, the wind generating set has the advantages of low wind speed self-starting performance, long generating time, more generating capacity and high annual available hours.

Drawings

FIG. 1 is a schematic structural view of a horizontal-axis permanent-magnet direct-drive wind power generation system of the speed-increasing pipe barrel of the present invention;

FIG. 2 is a schematic structural view of a mounting rack of the horizontal-axis permanent-magnet direct-drive wind power generation system of the speed-increasing pipe barrel of the present invention;

FIG. 3 is a schematic structural view of an impeller assembly of the horizontal-axis permanent-magnet direct-drive wind power generation system of the speed-increasing tube of the present invention;

FIG. 4 is a schematic view of the installation of the impeller assembly of the horizontal-axis permanent-magnet direct-drive wind power generation system of the speed-increasing tube of the present invention;

FIG. 5 is a top plan view of the impeller assembly of the horizontal axis permanent magnet direct drive wind power generation system of the speed-increasing tube of the present invention;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

FIG. 7 is a partial enlarged view of B in FIG. 6;

FIG. 8 is a schematic structural view of the wind-gathering and speed-increasing assembly of the horizontal-axis permanent-magnet direct-drive wind power generation system of the speed-increasing tube of the present invention;

fig. 9 is a schematic structural view of the supporting rod component of the horizontal-axis permanent-magnet direct-drive wind power generation system of the speed-increasing tube of the present invention.

Detailed Description

The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that the functional, method, or structural equivalents and substitutions made by these embodiments are within the scope of the present invention.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are used in a broad sense, and may be, for example, mechanically or electrically connected, or interconnected between two elements, either directly or indirectly through intervening media, and the specific meaning of the terms as used herein will be understood by those skilled in the art.

As shown in fig. 1, a speed-increasing tube horizontal axis permanent magnetism directly drives wind power generation system, it includes mounting bracket 1, impeller subassembly 2, coupling assembling 3, electricity generation subassembly 4 and gather wind speed-increasing subassembly 5, coupling assembling 3 includes dabber 31, first bearing 32 and flange 33, the fixed setting on 1 top of mounting bracket in both ends of dabber 31, the fixed first bearing 32 that sets up in the middle of dabber 31, impeller subassembly 2 installs on dabber 31 through first bearing 32, 2 lug connection electricity generation subassemblies 4 of impeller subassembly, it is located the center of gathering wind speed-increasing subassembly 5 to gather wind speed-increasing subassembly 5 setting in the outside of impeller subassembly 2 and impeller subassembly 2, it adopts following technical scheme to gather wind speed-increasing subassembly 5 fixed mounting on dabber 31: a horizontal shaft wind power generation system of a speed-increasing pipe barrel consists of three blades 22, an outer rotor permanent magnet direct-drive wind power generator 41, a mandrel 31, a surrounding speed-increasing pipe barrel, a supporting rod in the pipe barrel, a support and a support platform 13. The three blades 22 are connected to the impeller through bolts, the stator of the outer rotor permanent magnet direct-drive wind driven generator 41 is connected to the mandrel 31 through bolts, and the mandrel 31 is fixedly connected with the support rod in the tube to support the whole tube. The mandrel 31 is fixedly connected with a support for supporting the whole pipe barrel and the wind generating set, the support is fixedly connected with the support platform 13, and the support platform 13 is connected with the tower barrel through a yaw bearing. The wind generating set is arranged on the inner core shaft 31 of the wind collecting cover, the rotation axis of the wind generating set is superposed with the axis of the speed increasing pipe barrel, and the rotation plane of the wind generating set is superposed with the center of the minimum section of the speed increasing pipe barrel.

As shown in fig. 2, the mounting bracket 1 includes a first bracket 11, a second bracket 12, a bracket platform 13, a first yaw bearing 14 and a second yaw bearing 15, the first bracket 11 and the second bracket 12 are vertically fixed on the bracket platform 13, the first bracket 11 and the second bracket 12 are symmetrically arranged, the first yaw bearing 14 is arranged at the top of the bracket platform 13, and the second yaw bearing 15 is arranged at the bottom of the bracket platform 13. The impeller assembly 2 and the power generation assembly 4 are conveniently installed through the first bracket 11 and the second bracket 12, and the wind gathering and speed increasing assembly 5 is installed through the mandrel 31.

The gantry platform 13 is mounted on top of the support tower by means of a first yaw bearing 14 and a second yaw bearing 15. When the wind speed is too high, the first yaw bearing 14 and the second yaw bearing 15 are utilized to deflect the support platform 13, so that the rotating speed of the blades 22 is controlled, and the wind power generating device is safer and more reliable.

The core shaft 31 is fixed on top of the first bracket 11 and the second bracket 12 and connects the first bracket 11 and the second bracket 12. The wind gathering and speed increasing assembly 5, the impeller assembly 2 and the power generation assembly 4 are convenient to mount by using the mandrel 31.

As shown in fig. 3, the impeller assembly 2 includes a hub 21 and blades 22, the hub 21 is installed outside the first bearing 32, at least 3 blades 22 are provided, and the blades 22 are fixedly installed on the hub 21. The blades 22 generally drive the hub 21 to rotate, and further drive the power generation module 4 to generate power.

As shown in fig. 4, 5, 6 and 7, the power generation assembly 4 includes a permanent-magnet direct-drive wind power generator 41 and an external rotor 42, the external rotor 42 is connected to the hub 21 and the permanent-magnet direct-drive wind power generator 41, the permanent-magnet direct-drive wind power generator 41 is fixedly connected to the spindle 31 through a flange 33, and the hub 21 drives the external rotor 42 to rotate. A customized outer rotor permanent magnet direct-drive wind driven generator 41 is adopted, an outer rotor of the wind driven generator and an impeller are integrally designed and connected with a wind turbine blade 22, the impeller is matched with a bearing at one end of a mandrel 31, and a stator of the wind driven generator is connected with a flange 33 at the other end of the mandrel 31 through a bolt, so that the integral front and back stress of the mandrel 31 is guaranteed.

As shown in fig. 8, the wind gathering and speed increasing assembly 5 includes a profile frame 51, a skin 52, a trailing edge gradient 53 and a support rod member 54, the profile frame 51 is annular, the skin 52 is riveted on the profile frame 51, the wind inlet of the profile frame 51 is provided with the trailing edge gradient 53, and the inner side of the profile frame 51 is connected with the mandrel 31 through the support rod member 54. The section bar frame 51 is connected with the circumference of the pipe barrel by a support rod and is connected with the mandrel 31, and the front stress surface and the rear stress surface of the pipe barrel are connected by the mandrel 31 to realize uniform deformation of the pipe barrel along the circumference, so that the whole weight is reduced.

The profile frame 51 adopts a steel frame structure, wind resistance is reduced as much as possible, a bracket base of the pipe barrel adopts a double-support bearing structure, and the anti-unbalance loading capacity of the profile frame 51 in the use process is increased as much as possible.

The single plate of the pipe barrel is riveted with a skin 52 by a profile frame 51, the annular N plates manufactured in a modularized mode are assembled through bolt connection, and the profile frame 51 and the skin 52 can be made of materials with equal strength and low density so as to reduce the weight of the whole pipe barrel.

The wind gathering and speed increasing assembly 5 is provided with an air inlet and an air outlet, the air inlet and the air outlet 4 are formed by rotating a single-side molded line for 360 degrees by taking an axis as a center, the single-side molded line comprises an arc and a section of edge straight line, and the edge straight line is arranged at the air outlet. Where the edge line is the trailing edge gradient 53.

The axial single-side molded line of the wind gathering and speed increasing assembly 5 is formed by combining an arc and a section of edge straight line, and the molded line rotates for a circle around the axis to obtain the pneumatic appearance of the wind collecting cover.

A design method of a high-efficiency wind collecting cover suitable for a horizontal shaft wind turbine comprises the following design steps:

the method comprises the following steps: according to the design power, the design wind speed and the predicted wind energy utilization coefficient of 0.7, the P-1/2 rho V is brought in³πR²And Cp formula, and further determining the rotating diameter D of the wind turbine impeller.

Step two: considering the structural deformation of the wind-collecting cover, increasing by 200mm on the basis of the rotating diameter D of the impeller of the wind turbine to obtain the minimum section diameter D0 of the wind-collecting cover;

determining the length L of the wind-collecting cover according to the ratio of the minimum section diameter D0 of the wind-collecting cover to the length L of the wind-collecting cover of 0.2-0.25;

determining the diameter D1 of the inlet section of the wind-collecting cover according to the ratio of the diameter D1 of the inlet section of the wind-collecting cover to the minimum diameter D0 of the wind-collecting cover being 1.2-1.3;

determining the diameter D2 of the section of the outlet of the wind collecting cover according to the ratio of the diameter D2 of the section of the outlet of the wind collecting cover to the diameter D0 of the minimum section of the wind collecting cover being 1.3-1.35;

and determining the length L0 of the edge straight line 1 according to the ratio of the length L0 of the edge straight line 1 to the minimum section diameter D0 of the wind-collecting cover of 0.05-0.1.

Step three: the molded line of the wind collecting cover is established in a diameter coordinate system, the central axis of the wind collecting cover is taken as an X axis, any radial direction is taken as a Y axis, the X coordinate of the minimum section of the wind collecting cover is 0, the distance from the inlet section of the wind collecting cover to the axis of the minimum section of the wind collecting cover is 9/19 of the length L of the wind collecting cover, and the distance from the outlet section of the wind collecting cover to the axis of the minimum section of the wind collecting cover is 10/19 of the length L of the wind collecting cover.

Three coordinate points A (-9L/19, D1/2), B (0, D0/2) and C (10L/19, D2/2) of the wind-collecting cover profile are determined according to the diameters and the axial lengths of the inlet section, the minimum section and the outlet section of the wind-collecting cover, an edge straight line 1 of the wind-collecting cover is coplanar with the outlet section of the wind-collecting cover, and two coordinates of the edge straight line 1 of the wind-collecting cover are respectively C (10L/19, D2/2) and D (10L/19, D2/2+ L0).

Drawing an arc 2 through A, B, C, connecting C and D to obtain a molded line of the wind-collecting cover, and rotating the molded line for 360 degrees along the X axis to obtain the three-dimensional aerodynamic shape of the wind-collecting cover.

Minimum section diameter D of wind-collecting cover₀The ratio of the length of the wind-collecting cover to the length L of the wind-collecting cover is 0.22.

Diameter D of inlet section of wind collecting cover₁And the minimum section diameter D of the wind-collecting cover₀The ratio of (a) to (b) is 1.25.

The ratio of the sectional diameter D2 of the outlet of the wind-collecting cover to the minimum sectional diameter D0 of the wind-collecting cover is 1.32.

The ratio of the length L0 of the edge straight line 1 to the minimum section diameter D0 of the wind-collecting cover is 0.075

As shown in fig. 9, the support rod assembly 54 includes a plurality of first main support rods 55, a plurality of second main support rods 56, a plurality of first diagonal support rods 57, and a plurality of second diagonal support rods 58, the first main support rods 55 are disposed at the air inlet and connect the inner wall of the profile frame 51 and the mandrel 31, and the first diagonal support rods 57 are connected between the first main support rods 55;

a plurality of second main supporting rods 56 are provided, the second main supporting rods 56 are arranged at the air outlet and are connected with the inner wall of the profile frame 51 and the mandrel 31, and the second diagonal supporting rods 58 are connected between the second main supporting rods 56. The first main support rod 55, the second main support rod 56, the first diagonal support rod 57 and the second diagonal support rod 58 are used for increasing the overall strength of the wind gathering and speed increasing assembly 5.

The foregoing is only a few embodiments of the present invention, and it should be noted that, for those skilled in the art, other modifications and improvements can be made without departing from the inventive concept of the present invention, and all of them belong to the protection scope of the present invention.

Claims

1. The speed-increasing tube horizontal axis permanent magnet direct-drive wind power generation system is characterized by comprising a mounting frame, an impeller assembly, a connecting assembly, a power generation assembly and a wind gathering and speed increasing assembly, wherein the connecting assembly comprises a mandrel, a first bearing and a flange, two ends of the mandrel are fixedly arranged at the top end of the mounting frame, the first bearing is fixedly arranged in the middle of the mandrel, the impeller assembly is mounted on the mandrel through the first bearing, the impeller assembly is directly connected with the power generation assembly, the wind gathering and speed increasing assembly is arranged on the outer side of the impeller assembly and located at the center of the wind gathering and speed increasing assembly, and the wind gathering and speed increasing assembly is fixedly mounted on the mandrel.

2. The speed-increasing pipe barrel horizontal shaft permanent magnet direct-drive wind power generation system according to claim 1, wherein the mounting frame comprises a first support, a second support, a support platform, a first yaw bearing and a second yaw bearing, the first support and the second support are vertically fixed on the support platform, the first support and the second support are symmetrically arranged, the first yaw bearing is arranged at the top of the support platform, and the second yaw bearing is arranged at the bottom of the support platform.

3. The speed-increasing tube horizontal-axis permanent-magnet direct-drive wind power generation system as claimed in claim 2, wherein the mandrel is fixed to the top of the first bracket and the second bracket and is connected with the first bracket and the second bracket.

4. The speed-increasing tube horizontal-axis permanent-magnet direct-drive wind power generation system as claimed in claim 1, wherein the impeller assembly comprises a hub and blades, the hub is mounted on the outer side of the first bearing, and at least 3 blades are fixedly mounted on the hub.

5. The speed increasing tube horizontal axis permanent magnet direct drive wind power generation system as claimed in claim 1, wherein the power generation assembly comprises a permanent magnet direct drive wind power generator and an external rotor, the external rotor is connected with a hub and the permanent magnet direct drive wind power generator, the permanent magnet direct drive wind power generator is fixedly connected with a mandrel through a flange, and the hub drives the external rotor to rotate.

6. The speed-increasing tube horizontal axis permanent magnetic direct drive wind power generation system of claim 1, wherein the wind gathering and speed increasing assembly comprises a profile frame, a skin, a trailing edge gradient and a support rod component, the profile frame is annular, the skin is riveted on the profile frame, an air inlet of the profile frame is provided with the trailing edge gradient, and the inner side of the profile frame is connected with a mandrel through the support rod component.

7. The speed-increasing-tube horizontal-axis permanent-magnet direct-drive wind power generation system as claimed in claim 6, wherein the supporting-bar components comprise a first main supporting bar, a second main supporting bar, a first diagonal supporting bar and a second diagonal supporting bar, the first main supporting bar is provided with a plurality of main supporting bars, the first main supporting bar is arranged at the air inlet and is connected with the inner wall of the profile frame and the mandrel, and the first diagonal supporting bar is connected between the first main supporting bars;

the second main support rods are arranged at the air outlet and connected with the inner wall of the profile frame and the mandrel, and the second diagonal support rods are connected between the second main support rods.

8. A speed-increasing tube horizontal axis permanent magnet direct drive wind power generation system as claimed in any one of claims 2 or 3, wherein said support platform is mounted on top of a support tower by means of a first yaw bearing and a second yaw bearing.