CN217421411U

CN217421411U - Blade extension joint structure of wind generating set

Info

Publication number: CN217421411U
Application number: CN202221402457.1U
Authority: CN
Inventors: 谢雨辰; 刘明秋; 贾金生
Original assignee: Shenyang Ende New Energy Technology Co ltd
Current assignee: Shenyang Ende New Energy Technology Co ltd
Priority date: 2022-06-07
Filing date: 2022-06-07
Publication date: 2022-09-13
Anticipated expiration: 2032-06-07

Abstract

The utility model is suitable for the technical field of wind power generation, and provides a blade extension joint structure of a wind generating set, which comprises a blade tip body and a connecting structure; the outer end of the outer side surface of the blade tip body is fixedly connected with a one-way winglet, an included angle is formed between the one-way winglet and the blade tip body, and the inner end of the blade tip body is fixedly connected with two positioning pins; the connection structure includes a connection pipe. This wind generating set's blade extension festival structure, length through the apex body is longer, and the appearance redesign increases wind generator's impeller diameter to install one-way winglet additional, reduce apex vortex loss, make the generating efficiency of generator higher, it is better to the utilization effect that kinetic energy changes into the electric energy, make generating set blade's aerodynamic performance better, and for epoxy fills technology deformation in the vacuum through the apex body, improve material intensity and product quality.

Description

Blade extension joint structure of wind generating set

Technical Field

The utility model belongs to the technical field of wind power generation, especially, relate to a wind generating set's blade extension festival structure.

Background

Wind power generation refers to converting kinetic energy of wind into electric energy, wind energy is a clean and pollution-free renewable energy source and is utilized by people for a long time, water is pumped and ground mainly through a windmill, people are interested in how to utilize wind to generate electricity, and the wind power generation is very environment-friendly.

In the prior art, the wind energy is huge, the kinetic energy of wind can be converted into electric energy for utilization through a wind driven generator, but the blades of the existing wind driven generator set are mostly in a straight state in the use process, the pneumatic performance is mostly poor, the generating efficiency of the set is low, and the eddy current loss is large.

SUMMERY OF THE UTILITY MODEL

The utility model provides a wind generating set's blade extension festival structure aims at solving current wind generating set's blade at the in-process that uses, and the blade is the straight state mostly, and the pneumatic performance of blade is mostly relatively poor, leads to the unit generating efficiency lower, the great problem of eddy current loss.

The utility model is realized in such a way that the blade extension joint structure of the wind generating set comprises a blade tip body and a connecting structure;

the outer end of the outer side surface of the blade tip body is fixedly connected with a one-way winglet, an included angle is formed between the one-way winglet and the blade tip body, and the inner end of the blade tip body is fixedly connected with two positioning pins;

the connecting structure comprises a connecting pipe, the connecting pipe is transversely and fixedly connected to the inner end of the blade tip body, the connecting pipe is positioned between the two positioning pins, and the inner end of the connecting pipe is fixedly connected with a guide shaft;

a lightning protection lead is arranged inside the guide shaft, a lead joint is arranged at the inner end of the lightning protection lead, and a positioning ring is fixedly connected to the inner end of the surface of the connecting pipe;

the inner of guiding axle is provided with the eye screw, the fixed surface cover of eye screw is equipped with the location snap ring.

Preferably, the blade tip body is made of epoxy resin.

Preferably, the blade tip body is manufactured by a vacuum infusion process.

Preferably, the outer end of the outer side surface of the blade tip body is fixedly connected with a lightning receptor.

Preferably, a drain hole is formed in the outer end of the outer side face of the blade tip body, the drain hole is located between the lightning receptor and the unidirectional winglet, and the bottom of the inner wall of the drain hole extends to the lower surface of the blade tip body.

Preferably, the connecting pipe is made of carbon fiber.

Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a wind generating set's blade extension festival structure, length through installing one-way winglet additional with the apex body is longer, the appearance redesign, change traditional straight state, increase wind driven generator's impeller diameter, reduce apex eddy current loss, make the generating efficiency of generator higher, it is better to change the utilization effect that the kinetic energy is the electric energy, make the pneumatic performance of generating set blade better, and fill technology deformation in the vacuum for epoxy through the apex body, improve material intensity and product quality, the life of extension apex body, and through the connection structure who is provided with, be convenient for be connected fixed the use between apex body and the blade, and easy operation is quick, the manual operation of being convenient for.

Drawings

Fig. 1 is a schematic side view of the present invention;

FIG. 2 is a schematic structural view of a connecting tube and a guide shaft according to the present invention;

fig. 3 is a schematic structural view of the middle blade tip body and the connecting pipe of the present invention.

In the figure: 1. a blade tip body 1; 2. a drain hole 2; 3. a lightning receptor 3; 4. a unidirectional winglet (4); 5. a positioning pin 5; 6. a connecting pipe 6; 7. a guide shaft 7; 8. a positioning ring 8; 9. a lightning protection lead 9; 10. a lead tab 10; 11. positioning the snap ring; 12. an eye screw.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-3, the present invention provides a technical solution: a blade extension joint structure of a wind generating set comprises a blade tip body 1 and a connecting structure;

the outer end of the outer side surface of the blade tip body 1 is fixedly connected with a one-way winglet 4, an included angle is formed between the one-way winglet 4 and the blade tip body 1, and the inner end of the blade tip body 1 is fixedly connected with two positioning pins 5;

the length of the blade tip body 1 is long, the appearance is redesigned, the diameter of an impeller of the wind driven generator is increased, the unidirectional winglet 4 is additionally arranged, the vortex loss of the blade tip is reduced, the generating efficiency of the generator is high, the utilization effect of converting kinetic energy into electric energy is good, and the pneumatic performance of the blade of the generator set is good.

The connecting structure comprises a connecting pipe 6, the connecting pipe 6 is transversely and fixedly connected to the inner end of the blade tip body 1, the connecting pipe 6 is positioned between the two positioning pins 5, and the inner end of the connecting pipe 6 is fixedly connected with a guide shaft 7;

a lightning protection lead 9 is arranged inside the guide shaft 7, a lead connector 10 is arranged at the inner end of the lightning protection lead 9, and a positioning ring 8 is fixedly connected to the inner end of the surface of the connecting pipe 6;

the connecting structure is convenient for manual connection and fixation between the blade tip body 1 and the blades, and is simple and rapid to operate and convenient for manual operation.

The inner end of the guide shaft 7 is provided with a ring eye screw 12, and the surface of the ring eye screw 12 is fixedly sleeved with a positioning snap ring 11.

After a main machine of the wind generating set is stopped, firstly turning a barring to enable a blade tip body 1 to be prepared for operation to face downwards, opening a blade brake box, checking and repairing the brake box, modifying the integral power-increased blade tip body 1, installing and replacing a steel wire rope and the blade tip body 1, adjusting a positioning ring 8 to enable the blade tip body 1 to be aligned with the front edge and the rear edge of a blade main body, tightening the blade tip body 1, cutting and repairing the end face of the blade tip body 1 according to the appearance of the blade main body, repairing paint in a surface repairing area, and sequentially repeating the steps for the other 2 blades to complete installation operation.

Further, the blade tip body 1 is made of epoxy resin.

In the present embodiment, the rubber damping plate of the blade tip body 1 is made of high-quality rubber, and can more effectively absorb the energy generated by the vibration of the blade at the shimmy frequency.

In the construction process, the environmental temperature is required to be within the range of 15-35 ℃, and the humidity is required to be less than 80 percent. If the environmental temperature and humidity do not meet the requirement, appropriate measures are taken for the construction environment, and the operation time of the resin and the adhesive is considered.

When the environmental temperature of the epoxy resin is lower than 20 ℃, an industrial electric blanket is used for covering the bonding and reinforcing area, the temperature is set to be 40 ℃, when the surface is cured to be in a non-sticky state, the temperature of the heating blanket is adjusted to be 70 ℃, and the heating is carried out until the curing is carried out.

Further, the blade tip body 1 is manufactured by adopting a vacuum infusion process.

In the embodiment, the blade tip body 1 is made of epoxy resin and deformed in a vacuum infusion process, so that the material strength and the product quality are improved, and the service life of the blade tip body 1 is prolonged.

Further, the outer end of the outer side surface of the blade tip body 1 is fixedly connected with a lightning receptor 3.

In this embodiment, the lightning receptor 3 is electrically connected to the down conductor and the grounding device, and when lightning strikes directly, lightning current flows from the lightning receptor to the ground through the down conductor and the grounding device, and is discharged to the ground rapidly, thereby protecting the electrical equipment.

Furthermore, a drain hole 2 is formed in the outer end of the outer side face of the blade tip body 1, the drain hole 2 is located between the lightning receptor 3 and the unidirectional winglet 4, and the bottom of the inner wall of the drain hole 2 extends to the lower surface of the blade tip body 1.

In the present embodiment, the drain hole 2 facilitates rapid drainage of the water flow.

Further, the connecting pipe 6 is made of carbon fiber.

In the present embodiment, the carbon fiber material makes the strength of the connection pipe 6 high.

The utility model discloses a theory of operation and use flow: the utility model discloses after having installed, the wind generating set host computer parks the back, at first the barring makes apex body 1 of preparing the operation downwards, open blade braking box, the braking box is restoreed in the inspection, repair the type to integral power-increasing apex body 1, wire rope and apex body 1 are changed in the installation, adjustment holding ring 8, make apex body 1 and blade main part front and back edge align, apex body 1 tightens up, cut according to the blade main part appearance to apex body 1's terminal surface and repair neatly, regional touch-up paint is repaired on the surface, can accomplish the installation operation to the above step of other 2 blade repetitions in proper order, apex body 1's length is longer, the appearance redesign, increase aerogenerator's impeller diameter, and install one-way winglet 4 additional, reduce apex eddy current loss, make the generating efficiency of generator higher.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a wind generating set's blade extension festival structure which characterized in that: comprises a blade tip body (1) and a connecting structure;

the outer end of the outer side surface of the blade tip body (1) is fixedly connected with a one-way winglet (4), an included angle is formed between the one-way winglet (4) and the blade tip body (1), and the inner end of the blade tip body (1) is fixedly connected with two positioning pins (5);

the connecting structure comprises a connecting pipe (6), the connecting pipe (6) is transversely and fixedly connected to the inner end of the blade tip body (1), the connecting pipe (6) is located between the two positioning pins (5), and the inner end of the connecting pipe (6) is fixedly connected with a guide shaft (7);

a lightning protection lead (9) is arranged inside the guide shaft (7), a lead joint (10) is arranged at the inner end of the lightning protection lead (9), and a positioning ring (8) is fixedly connected to the inner end of the surface of the connecting pipe (6);

the inner of guiding axle (7) is provided with eye screw (12), the fixed surface cover of eye screw (12) is equipped with location snap ring (11).

2. The blade extension joint structure of a wind generating set according to claim 1, wherein: the blade tip body (1) is made of epoxy resin.

3. The blade extension joint structure of a wind generating set according to claim 1, wherein: the blade tip body (1) is manufactured by adopting a vacuum infusion process.

4. The blade extension joint structure of a wind generating set according to claim 1, wherein: the outer end fixedly connected with of apex body (1) lateral surface connects arrester (3).

5. The blade extension joint structure of the wind generating set according to claim 4, wherein: the outer end of the outer side face of the blade tip body (1) is provided with a drain hole (2), the drain hole (2) is located between the lightning receptor (3) and the unidirectional winglet (4), and the bottom of the inner wall of the drain hole (2) extends to the lower surface of the blade tip body (1).

6. The blade extension joint structure of a wind generating set according to claim 1, wherein: the connecting pipe (6) is made of carbon fiber.