阅读说明：本技术 预制件、预制件模具、风电叶片以及风电叶片的制造方法 (Prefabricated part, prefabricated part die, wind power blade and manufacturing method of wind power blade ) 是由 唐金钱 周妮娜 王向东 张登刚 于 2020-07-07 设计创作，主要内容包括：本发明提供了一种预制件、预制件模具、风电叶片以及风电叶片的制造方法,在预制件本体的下表面开设一条形槽,条形槽可以沿着预制件的一端朝向另一端延伸,使得后续叶片加工成型时,灌注的树脂材料可以沿着条形槽流动,直接在预制件模具上凸起设置凸起部,在对预制件进行加工时,既可以直接在预制件的底部成型为条形槽,能够避免对预制件进行二次加工,避免对预制件下表面的纤维性能产生影响,且加工工艺更加简单,降低了预制件的生产成本,可以提高灌注速度和灌注效果,不会存在从上朝下灌注时,会存在底层无法完全灌透的问题,降低布层发白的可能,提高成型率。(The invention provides a prefabricated part, a prefabricated part mould, a wind power blade and a manufacturing method of the wind power blade, the lower surface of the prefabricated member body is provided with a strip-shaped groove which can extend towards the other end along one end of the prefabricated member, so that the poured resin material can flow along the strip-shaped groove when the subsequent blade is processed and molded, the bulge part is directly arranged on the prefabricated part mould in a protruding way, when the prefabricated member is processed, the strip-shaped groove can be directly formed at the bottom of the prefabricated member, the prefabricated member can be prevented from being processed secondarily, the influence on the fiber performance of the lower surface of the prefabricated member is avoided, the processing technology is simpler, the production cost of the prefabricated member is reduced, can improve the speed of filling and fill the effect, can not have from the top down when filling, can have the bottom and can't fill completely the problem of penetrating, reduce the cloth layer and turn white the possibility, improve the shaping rate.)

1. The prefabricated member is used for the wind driven generator blade, at least comprises a fiber material and a resin material, and is prefabricated and formed through a curing process, and the prefabricated member is characterized in that: including body (1), strip groove (11) have been seted up to the lower surface of body (1), the quantity of strip groove (11) is two at least, strip groove (11) spaced locating the lower surface of body (1), just strip groove (11) by the one end orientation of body (1) the other end of body (1) extends, strip groove (11) can make liquid resin material flow along with its extending direction.

2. The preform of claim 1, wherein: the depth of the strip-shaped groove (11) is gradually reduced from one end of the body (1) towards the other end of the body (1).

3. The preform of claim 1, wherein: the side wall of the body (1) is provided with a side communicating groove.

4. The preform of claim 1, wherein: the device also comprises staggered communication grooves (12), and the staggered communication grooves (12) are communicated with the strip-shaped grooves (11) and are staggered.

5. The preform of any of claims 1 to 4, wherein: the cross section of the strip-shaped groove (11) is arc-shaped, rectangular, triangular, trapezoidal or elliptical.

6. The preform of any of claims 1 to 4, wherein: the depth of the strip-shaped groove (11) is greater than 0mm and less than or equal to 10mm, and the width range of the strip-shaped groove (11) is greater than 0mm and less than or equal to 30 mm.

7. The preform of any of claims 1 to 4, wherein: the prefab is the blade root prefab, still includes a plurality of bolted connection spare, a plurality of bolted connection spare are arranged in the prefab side by side, bar groove (11) spaced locating the lower surface of body (1).

8. The preform of claim 7, wherein: the strip-shaped groove (11) is formed in the lower surface of the body (1) corresponding to the area between two adjacent bolt connecting pieces.

9. Preform mould for the infusion moulding of a preform according to any one of claims 1 to 8, characterized in that: the forming die comprises a die (2), wherein the die (2) is provided with a main surface and a side surface for forming a prefabricated member, at least two bulges (21) for forming the strip-shaped groove are convexly arranged on the main surface and/or the side surface of the die (2), and the bulges (21) extend from one end of the die (2) to the other end of the die (2).

10. The preform mold of claim 9, wherein: the height of the protruding portion (21) protruding from the main surface of the mold (2) is gradually reduced from one end of the mold (2) as it extends toward the other end of the mold (2).

11. The preform mold of claim 9, wherein: the novel packaging box also comprises a communication lug boss (21), wherein the communication lug boss (21) is staggered with the lug boss (21).

12. The preform mold of claim 9, wherein: the cross section of the bulge (21) is arc-shaped, rectangular, triangular, trapezoidal or elliptical.

13. The preform mold of claim 9, wherein: for shaping the root preform.

14. Wind turbine blade comprising a preform according to any of claims 1 to 8, the preform being arranged on a layer of fibrous material, characterized in that: the thickness of the fiber material layer adjacent to the strip-shaped groove (11) of the prefabricated member is more than or equal to 3 mm.

15. The manufacturing method of the wind power blade is characterized by comprising the following steps:

laying up a first lay-up on a blade master mould, laying up a preform as claimed in any one of claims 1 to 8 on the first lay-up;

laying a second layer, a diversion system and a vacuum membrane system on the upper surface of the prefabricated member;

and pouring and forming the blade towards the inside of the vacuum membrane system.

Technical Field

The invention relates to the technical field of blade manufacturing, in particular to a prefabricated part, a prefabricated part mold, a wind power blade and a manufacturing method of the wind power blade.

Background

With the large-scale development of wind power blades, modular manufacturing production is the mainstream trend in the future. At present, the prefabricated parts are formed by the advanced production of the blade root, the main beam and the trailing edge reinforcing beam, and finally the prefabricated parts and the residual paving layers at all parts are placed in a main mold to be integrally poured and molded. By adopting a mode of prefabricating part of the structure in advance, the manufacturing defect number of the final formed part can be reduced, and the forming efficiency of the main die is effectively improved. Among the prior art, generally adopt from the mode that blade shell surface towards bottom surface infiltration was filled when filling the shaping, the layer of top has the separation effect to the layer of below, consequently if the below layer of prefab is when thicker, can very big extension pouring time, still can very big improvement cloth layer whitish simultaneously and fill the risk that passes through completely incompletely.

Chinese patent application publication No. CN110733149 discloses a rapid perfusion forming die for a wind turbine blade shell and a manufacturing method thereof, wherein a diversion trench is formed at the bottom of the blade shell, and a backflow pipe network is arranged on an arc-shaped surface, so that resin on the surface of the blade shell flows back from the bottom surface of the blade shell to form, thereby completely soaking a cloth layer on the bottom surface, but in a manner of perfusion from a bottom layer to a surface layer, there is also a risk that the surface layer cannot be completely perfused.

Disclosure of Invention

The invention aims to provide a prefabricated part, a prefabricated part mold, a wind power blade and a manufacturing method of the wind power blade, and aims to solve the technical problem that the bottom layer and the surface layer cannot be quickly filled when the prefabricated part is filled in the prior art.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a prefabricated part for aerogenerator blade, it includes fibrous material and resin material at least, through solidification technology preforming, including the body, the bar groove has been seted up to the lower surface of body, the quantity in bar groove is two at least, the spaced locating in bar groove the lower surface of body, just the bar groove by the one end orientation of body the other end of body extends, the bar groove can make liquid resin material flow along with its extending direction.

Further, the depth of the strip-shaped groove becomes gradually shallower from one end of the body when extending toward the other end of the body.

Further, a side communicating groove is formed in the side wall of the body.

Further, the device also comprises staggered communication grooves which are communicated with the strip-shaped grooves and are staggered.

Further, the cross section of the strip-shaped groove is in a shape of circular arc, rectangle, triangle, trapezoid or ellipse.

Further, the depth of the strip-shaped groove is greater than 0mm and less than or equal to 10mm, and the width range of the strip-shaped groove is greater than 0mm and less than or equal to 30 mm.

Further, the prefab is the blade root prefab, still includes a plurality of bolted connection spare, a plurality of bolted connection spare arrange in the prefab side by side, the spaced of bar groove is located the lower surface of body.

Further, the strip-shaped groove is formed in the lower surface of the body corresponding to the area between two adjacent bolt connecting pieces.

The invention also discloses a preform mold for pouring and molding the preform, which comprises a mold, wherein the mold is provided with a main surface and a side surface for molding the preform, at least two bulges for molding the strip-shaped groove are convexly arranged on the main surface and/or the side surface of the mold, and the bulges extend from one end of the mold to the other end of the mold.

Further, the height of the projection portion projecting from the main surface of the mold gradually becomes shorter from one end of the mold as it extends toward the other end of the mold.

Further, the connecting device also comprises a connecting lug boss, and the connecting lug boss is staggered with the lug boss.

Further, the cross section of the bulge is in a shape of circular arc, rectangle, triangle, trapezoid or ellipse.

The invention also discloses a wind power blade which comprises the prefabricated member, wherein the prefabricated member is arranged on the fiber material layer, the fiber material layer adjacent to the strip-shaped groove of the prefabricated member is thicker than or equal to 4 mm.

The invention also discloses a manufacturing method of the wind power blade, which comprises the following steps:

laying a first paving layer on the blade main mold, and laying the prefabricated member on the first paving layer;

laying a second layer, a diversion system and a vacuum membrane system on the upper surface of the prefabricated member;

and pouring and forming the blade towards the inside of the vacuum membrane system.

The prefabricated part, the prefabricated part die, the wind power blade and the manufacturing method of the wind power blade have the advantages that:

1. set up a shape groove at the lower surface of prefab, the bar groove can extend towards the other end along the one end of prefab, when making follow-up blade machine-shaping, the resin material who fills can flow along the bar groove, and the extending direction in bar groove be with outside water conservancy diversion system cooperation, can make resin material permeate along bar groove forming surface fast, thereby improve filling speed and filling effect, when avoiding pouring from court down, can have the bottom and can't irritate thoroughly completely the problem, reduce the cloth layer and turn white probably, the shaping rate is improved. Meanwhile, the surface area of the prefabricated member is increased by the arrangement of the strip-shaped grooves, namely, the bonding or connecting area between the prefabricated member and the adjacent fiber layer is increased, and the bonding or connecting strength is enhanced.

2. The direct protruding bellying that sets up on the prefab mould adds man-hour to the prefab, and both can directly carry out secondary operation to the prefab for the bar groove at the bottom shaping of prefab, and direct molding has the bar groove promptly, need not break the fibre of prefab lower surface, avoids producing the influence to the fibre performance of prefab lower surface, and processing technology is simpler, has reduced the manufacturing cost of prefab.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic perspective view of a preform according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a preform according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a preform and a preform mold provided in an embodiment of the present invention;

FIG. 4 is a schematic structural view of the preform mold shown in FIG. 3;

FIG. 5 is a first schematic view of a fluid slot and a cross-linked slot connection according to an embodiment of the present invention;

fig. 6 is a second schematic structural diagram illustrating the connection of the fluid grooves and the staggered communication grooves according to the embodiment of the present invention.

Description of reference numerals:

1. a body; 11. a strip-shaped groove; 12. the communication grooves are staggered; 2. a mold; 21. a raised portion.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.