CN209781126U

CN209781126U - Tip tail edge reinforcing device and wind power generation blade comprising same

Info

Publication number: CN209781126U
Application number: CN201920564711.XU
Authority: CN
Inventors: 高世伟; 杨建兵; 卢鹏飞
Original assignee: Haimen Ailang Wind Power Technology Development Co Ltd; Shanghai Ailang Wind Power Technology Development (group) Co Ltd
Current assignee: Ailang Technology Co.,Ltd.; Nantong ailang Wind Power Technology Development Co.,Ltd.
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2019-12-13
Anticipated expiration: 2029-04-23

Abstract

The utility model discloses a device and contain its wind power generation blade are strengthened to apex trailing edge, apex trailing edge strengthens the device and includes first trailing edge part, second trailing edge part and reinforcement, first trailing edge part bond in second trailing edge part, just first trailing edge part with be formed with the tip of leaf between the second trailing edge part, the surface of tip of leaf has tip face, windward side and leeward side, the both ends of tip face connect respectively in the windward side with the leeward side, the cavity has in the tip of leaf, the reinforcement is located in the cavity, the outside of reinforcement has the connection face, connect in first trailing edge part with second trailing edge part, just connect the face with the tip face the windward side is corresponding. The wind power blade comprises the tip trailing edge strengthening device as described above. The phenomena of cracking and the like at the tip of the blade are effectively avoided, and the stability of the blade tip trailing edge reinforcing device is greatly improved.

Description

Tip tail edge reinforcing device and wind power generation blade comprising same

Technical Field

The utility model relates to a device and contain its wind power generation blade are strengthened to apex trailing edge.

Background

In the industrial production process of megawatt-class blades, the tail edge of the blade tip has a narrow space and a small distance from a core material to the edge, and the bonding width is generally narrow in design, so that the structural strength of the tail edge of the blade tip is low, and although the structural strength can meet the load of the blade during operation, due to the fluctuation of the control level, the turbulence of different wind field sites is different, the load of the blade tip area is also different, and the wind speed of the blade tip in the area with large local ground roughness is too high, so that the blade tip is easy to crack due to fatigue. Meanwhile, the wind field site selection is moved from north to south, the probability of lightning strike on the blade tip of the blade is increased year by year, and the tail edge area of the blade tip is more prone to cracking after the lightning strike occurs.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the above-mentioned not enough of current existence, the utility model provides a device and contain its wind power generation blade are strengthened to apex trailing edge.

The utility model discloses a realize through following technical scheme:

The utility model provides a device is strengthened to apex trailing edge, its includes first trailing edge part, second trailing edge part and reinforcement, first trailing edge part bond in second trailing edge part, just first trailing edge part with be formed with the tip between the second trailing edge part, the surface of tip has tip face, windward side and leeward side, the both ends of tip face connect respectively in the windward side with the leeward side, the cavity has in the tip of leaf, the reinforcement is located in the cavity, the outside of reinforcement has the connection face, connect the face connect in first trailing edge part with second trailing edge part, just connect the face with the tip face the windward side is corresponding.

Further, the stiffener is bonded to the tip end.

Further, the shape of the connecting surface is an uneven surface.

Further, the connecting surface is a rough surface.

Furthermore, the windward side is located on the outer side face of the first trailing edge part, the leeward side is located on the outer side face of the second trailing edge part, the first trailing edge part and the second trailing edge part are in smooth transition and form the tip end face, and the connecting face covers a die assembly seam between the first trailing edge part and the second trailing edge part.

Further, the material of the reinforcing piece is glass fiber reinforced plastics.

Further, the reinforcing part is a lining plate, and the cross section of the lining plate is arc-shaped.

A wind power blade comprising a tip trailing edge strengthening device as described above.

The beneficial effects of the utility model reside in that: through setting up the reinforcement in the cavity and connecting in first trailing edge part and second trailing edge part, strengthened the most advanced structural strength of leaf, effectively avoided the most advanced phenomenon such as fracture to appear of leaf, improved the stability of apex trailing edge reinforcing apparatus greatly.

Drawings

Fig. 1 is a schematic structural view of a tip trailing edge reinforcing device according to an embodiment of the present invention.

Description of reference numerals:

First trailing edge component 1

Second trailing edge component 2

Reinforcing element 3

Connecting surface 31

Tip end 4

Windward side 41

Tip face 42

Leeward side 43

Cavity 44

Detailed Description

The following description of the embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments in which the invention may be practiced.

As shown in fig. 1, the present embodiment discloses a tip trailing edge strengthening device, which includes a first trailing edge member 1, a second trailing edge member 2, and a strengthening member 3, wherein the first trailing edge member 1 is adhered to the second trailing edge member 2, a tip 4 is formed between the first trailing edge member 1 and the second trailing edge member 2, an outer surface of the tip 4 has a tip surface 42, a windward surface 41, and a leeward surface 43, two ends of the tip surface 42 are respectively connected to the windward surface 41 and the leeward surface 43, a cavity 44 is formed in the tip 4, the strengthening member 3 is located in the cavity 44, a connecting surface 31 is arranged outside the strengthening member 3, the connecting surface 31 is connected to the first trailing edge member 1 and the second trailing edge member 2, and the connecting surface 31 corresponds to the tip surface 42 and the windward surface 41.

Set up reinforcement 3 in cavity 44 and connect in first trailing edge part 1 and second trailing edge part 2, can effectively strengthen the joint strength between first trailing edge part 1 and the second trailing edge part 2 to strengthen the structural strength of tip 4, effectively avoided tip 4 phenomenons such as fracture to appear, improved tip trailing edge reinforcing means's stability greatly. Meanwhile, the connecting surface 31 corresponds to the tip surface 42 and the windward surface 41, the windward surface 41 is stressed greatly, the structural strength can be increased through the connection of the reinforcing part 3, and the stability of the blade tip tail edge reinforcing device is greatly improved.

The stiffener 3 is bonded to the tip 4. Adopt the bonding connection mode, connect simple and convenient, simultaneously, increased the bonding area between first trailing edge part 1 and the second trailing edge part 2, strengthened the bonding strength between first trailing edge part 1 and the second trailing edge part 2, reduced apex trailing edge reinforcing means's fortune dimension defect.

The windward side 41 is located on the outer side surface of the first tail edge part 1, the leeward side 43 is located on the outer side surface of the second tail edge part 2, the first tail edge part 1 and the second tail edge part 2 are in smooth transition and form a tip end surface 42, and the connecting surface 31 covers a mold closing seam between the first tail edge part 1 and the second tail edge part 2. After the first trailing edge member 1 and the second trailing edge member 2 are bonded, the connecting surface 31 of the reinforcement 3 is bonded to the first trailing edge member 1 and the second trailing edge member 2, and the bonding structural strength of the tip end 4 is improved. Wherein, the position of the reinforcing member 3 at the die-closing seam is relatively thicker, and the thickness of the position gradually decreases along the two ends of the reinforcing member 3.

The reinforcing piece 3 is made of glass fiber reinforced plastic, and is light in weight, high in strength and low in cost. The reinforcing part 3 is a lining plate, the cross section of the lining plate is arc-shaped, the structure is simple, and the manufacture is convenient.

The shape of the connection surface 31 may be an uneven surface. The reinforcing part 3 is connected with the tip end 4 through the rugged connecting surface 31, and the connecting strength between the reinforcing part 3 and the tip end 4 is effectively enhanced. The shape of the uneven surface may be any shape, and is not limited.

The connection surface 31 may be a rough surface. The rough surface treatment is all done in the outside of reinforcement 3, can effectively strengthen the joint strength between reinforcement 3 and the most advanced 4 of leaf, has improved apex trailing edge reinforcing apparatus's stability greatly.

The embodiment also discloses a wind power generation blade which comprises the blade tip tail edge reinforcing device. The phenomena of cracking and the like at the tip of the blade are effectively avoided, and the stability of the wind power generation blade is greatly improved.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.

Claims

1. The utility model provides a device is strengthened to apex trailing edge, its characterized in that, it includes first trailing edge part, second trailing edge part and reinforcement, first trailing edge part bond in second trailing edge part, just first trailing edge part with be formed with the tip between the second trailing edge part, the surface of tip has tip face, windward side and leeward side, the both ends of tip face connect respectively in the windward side with the leeward side, have the cavity in the tip of leaf, the reinforcement is located in the cavity, the outside of reinforcement has the connection face, connect the face connect in first trailing edge part with second trailing edge part, just connect the face with the tip face the windward side is corresponding.

2. the tip trailing edge reinforcement device of claim 1, wherein said reinforcement is bonded to said tip.

3. The tip trailing edge strengthening device of claim 2, wherein said attachment surface is shaped as a rugged surface.

4. The tip trailing edge strengthening device of claim 2 wherein said attachment surface is roughened.

5. the tip trailing edge strengthening device of claim 1, wherein said windward side is located on an outer side of said first trailing edge member and said leeward side is located on an outer side of said second trailing edge member, said first trailing edge member and said second trailing edge member smoothly transition and form said tip face, and said connecting face covers a matched mold seam between said first trailing edge member and said second trailing edge member.

6. The tip trailing edge strengthening device of claim 1, wherein the material of said reinforcement member is glass reinforced plastic.

7. The blade tip trailing edge reinforcement device of claim 1 wherein said reinforcement is a backing sheet, said backing sheet having an arcuate cross-section.

8. Wind power blade characterised in that it comprises a tip trailing edge strengthening device according to any of claims 1-7.