CN214741817U

CN214741817U - Wind power blade

Info

Publication number: CN214741817U
Application number: CN202120211111.2U
Authority: CN
Inventors: 鲁晓锋; 王向东; 李国勇
Original assignee: Sinomatech Wind Power Blade Co Ltd
Current assignee: Sinomatech Wind Power Blade Co Ltd
Priority date: 2021-01-26
Filing date: 2021-01-26
Publication date: 2021-11-16
Anticipated expiration: 2031-01-26

Abstract

The utility model relates to the technical field of wind power blades, and provides a wind power blade, which comprises a blade body, a blade root support ring and a blade root baffle, wherein the blade body comprises a cavity; the blade root support ring is arranged in the cavity and connected with the blade body so as to be used for supporting the root of the blade body; the blade root baffle is arranged in the cavity. Through be provided with the blade root support ring in the die cavity at blade body to can support the root of blade body, prevent that the root of blade body from taking place to warp the scheduling problem, and the blade root support ring also can not take place to interfere with wind-powered electricity generation blade aftertreatment process, can not hinder other processing procedure behind the wind-powered electricity generation blade drawing of patterns promptly.

Description

Wind power blade

Technical Field

The utility model relates to a wind-powered electricity generation blade technical field especially relates to a wind-powered electricity generation blade.

Background

With the development of large-scale and light-weight of the blade, the diameter of the blade root is continuously increased, but the structural thickness of the blade root is kept unchanged and even tends to become thinner, so that the rigidity of the blade root is smaller, the blade root is easier to deform, and the drilling positioning of the blade or the installation and matching of the blade are finally influenced.

In the related technology, the conventional way of preventing the blade root from deforming is mainly to install a flange plate or increase a steel frame support inside the blade root when the blade is demoulded. And the processes such as end surface polishing, blade root drilling, blade root baffle installation and the like are carried out after the blade demoulding and circulation, the installed deformation prevention device is very easy to interfere with the post-treatment process, and the conventional deformation prevention device is dismantled in advance, so that the blade root of the blade is in a non-constrained state and is very easy to deform, and the deformation of the blade root of the blade becomes a constraint factor for smoothly carrying out the assembly and post-treatment of a large-scale blade, and the subsequent work is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a wind-powered electricity generation blade to improve the deformation problem of blade.

The utility model provides a wind-powered electricity generation blade, include:

the blade body comprises a cavity;

the blade root support ring is arranged in the cavity and connected with the blade body so as to be used for supporting the root of the blade body;

the blade root baffle is arranged in the cavity.

In one embodiment of the present invention, the blade root baffle is connected to the blade root support ring.

In one embodiment of the present invention, the blade root support ring is a sandwich structure.

In one embodiment of the present invention, the blade root support ring is an integral structure.

In an embodiment of the present invention, the blade root support ring includes a plurality of support sections, and the plurality of support sections are sequentially arranged along the circumferential direction of the cavity.

In one embodiment of the present invention, the blade root support ring is integrally formed with the blade body.

In one embodiment of the invention, the blade root support ring is detachably connected to the blade body.

In an embodiment of the present invention, the wind power blade further includes:

and the auxiliary support frame is connected to the blade root support ring and used for supporting the blade root support ring.

In an embodiment of the present invention, the auxiliary support frame and the blade root baffle are respectively connected to two side surfaces of the blade root support ring.

In an embodiment of the present invention, the auxiliary supporting frame includes:

a central connection portion;

the connecting rod, the connecting rod is a plurality of, and central connecting portion and blade root support ring are connected respectively to the both ends of a plurality of connecting rods.

In an embodiment of the present invention, a plurality of supporting connection portions are provided on the blade root support ring, the plurality of supporting connection portions are arranged at intervals along a circumferential direction of the blade root support ring, and the plurality of supporting connection portions are respectively connected to the plurality of connecting rods.

In an embodiment of the present invention, at least one of the plurality of connecting rods is a telescopic rod.

The utility model discloses a wind-powered electricity generation blade is through being provided with the blade root support ring in the die cavity of blade body to can support the root of blade body, prevent that the root of blade body from taking place to warp the scheduling problem, and the blade root support ring also can not take place to interfere with wind-powered electricity generation blade aftertreatment process, can not hinder other processing procedure behind the wind-powered electricity generation blade drawing of patterns promptly.

Drawings

The various objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the invention, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the invention and are not necessarily drawn to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:

FIG. 1 is a schematic partial structural view of a wind blade shown according to an exemplary embodiment;

FIG. 2 is a schematic partial structural view of a wind blade according to another exemplary embodiment;

FIG. 3 is a schematic illustration of an internal structure of a wind blade according to another exemplary embodiment;

FIG. 4 is a schematic illustration of a connection structure of a blade root support ring and an auxiliary support frame of a wind turbine blade according to another exemplary embodiment;

FIG. 5 is a schematic illustration of a connection of a blade root support ring and a support connection of a wind turbine blade according to another exemplary embodiment;

FIG. 6 is a schematic structural view of an auxiliary support frame for a wind blade shown in accordance with another exemplary embodiment;

FIG. 7 is a schematic structural view of a support connection of a wind blade according to another exemplary embodiment;

fig. 8 is a schematic cross-sectional view of a blade root support ring of a wind turbine blade according to another exemplary embodiment.

The reference numerals are explained below:

10. a blade body; 11. a cavity; 20. a blade root support ring; 21. sandwiching; 22. a wrapping layer; 30. a blade root baffle; 40. an auxiliary support frame; 41. a central connection portion; 42. a connecting rod; 50. a support connection portion; 51. and connecting the holes.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

In the following description of various exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the invention may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present invention. Moreover, although the terms "over," "between," "within," and the like may be used in this specification to describe various example features and elements of the invention, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures to fall within the scope of the invention.

An embodiment of the utility model provides a wind-powered electricity generation blade, please refer to fig. 1 to 8, wind-powered electricity generation blade includes: the blade comprises a blade body 10, wherein the blade body 10 comprises a cavity 11; a blade root support ring 20, the blade root support ring 20 being mounted in the cavity 11, the blade root support ring 20 being connected to the blade body 10 for supporting the root of the blade body 10; and a blade root baffle 30, wherein the blade root baffle 30 is arranged in the cavity 11.

The utility model discloses a wind-powered electricity generation blade is through being provided with blade root support ring 20 in the die cavity 11 of blade body 10 to can support the root of blade body 10, prevent that the root of blade body 10 from taking place to warp the scheduling problem, and blade root support ring 20 also can not take place to interfere with wind-powered electricity generation blade aftertreatment process, can not hinder other processing procedure after the wind-powered electricity generation blade drawing of patterns promptly.

It should be noted that, after the blade body 10 is demolded and circulated, the processes of end surface polishing, blade root drilling, blade root baffle installation or transportation and stacking and the like need to be performed, and due to the existence of the blade root support ring 20, the blade body 10 does not have the problems of deformation and the like in the process of the above processes.

In the operation process of the fan, if the residual articles in the blade body 10 fall off and hit the hub, the hub is damaged, and the normal operation of the fan is affected. To avoid this problem, the blade root baffle 30 is installed in the cavity 11 to separate the cavity 11 from the hub.

In one embodiment, the root support ring 20 may be a ring-shaped stiffened plate.

In one embodiment, the blade root baffle 30 is provided with U-shaped waves for releasing the deformation stress of the blade root and the blade root baffle 30, and the specific structure of the blade root baffle 30 may be a baffle form in the related art, which is not limited herein.

In one embodiment, the root baffle 30 may be coupled to the blade body 10.

In one embodiment, the root baffle 30 is attached to the root support ring 20, i.e., the root baffle 30 is mounted to the root support ring 20 after the root support ring 20 is attached to the blade body 10 and the root baffle 30 is mounted thereto.

In some embodiments, the root support ring 20 may be integrally formed with the blade body 10, for example, the root support ring 20 may be integrally formed with the blade body 10 in a prefabricated form.

In some embodiments, the blade root support ring 20 is detachably connected to the blade body 10, in this embodiment, the blade root support ring 20 is bonded to the blade body 10, for example, the blade root support ring 20 is connected to the blade body 10 by an adhesive.

In one embodiment, the cross-sectional shape of the root support ring 20 may be generally rectangular, oval, triangular, oblong, honeycomb, hourglass, polygonal, or the like.

In one embodiment, the root support ring 20 may be of a metallic construction, such as a steel construction.

In one embodiment, the root support ring 20 is a sandwich structure.

Specifically, as shown in fig. 8, the sandwich structure includes a core 21 and a covering layer 22, the core 21 is located in the covering layer 22, the core 21 may be a balsa wood or foam core material, and the covering layer 22 may include a glass fiber reinforced plastic layer or a resin-rich layer. In the present embodiment, the core 21 is wrapped with glass fiber reinforced plastic.

In one embodiment, the blade root support ring 20 is a one-piece structure, that is, the blade root support ring 20 is a closed ring extending around the circumferential direction of the blade body 10, so as to enhance the supporting effect on the blade body 10.

In one embodiment, the blade root support ring 20 includes a plurality of support sections, and the plurality of support sections are sequentially arranged along the circumferential direction of the cavity 11, that is, the plurality of support sections may be sequentially connected to the blade body 10, so as to jointly support the blade body 10.

In some embodiments, a plurality of support sections may be arranged at intervals along the circumferential direction of the blade body 10, that is, the support of the blade body 10 is realized by the plurality of support sections at intervals.

In one embodiment, the support segments are spliced, specifically, the support segments are sequentially spliced and arranged along the circumferential direction of the cavity 11, that is, with respect to the integrated blade root support ring 20, the blade root support ring 20 in this embodiment needs to be installed multiple times, but the support effect is not affected.

It should be noted that the root support ring 20 realizes the root support of the blade body 10, and avoids the blade body 10 from deforming, and when in specific use, the root support ring 20 can independently realize the root support of the blade body 10.

In one embodiment, as shown in fig. 2 to 4, the wind power blade further includes: the auxiliary support frame 40 is connected to the blade root support ring 20, and is used for supporting the blade root support ring 20, that is, on the basis that the blade root support ring 20 supports the root of the blade body 10, the auxiliary support frame 40 realizes the support of the blade root support ring 20, thereby ensuring that the blade root support ring 20 can stably support the root of the blade body 10, and improving the support effect of the blade root support ring 20 to a certain extent.

In particular, the auxiliary support bracket 40 is attached to the inside of the root support ring 20.

It should be noted that, in other processing procedures after the wind turbine blade is demolded, the auxiliary support frame 40 may affect the performance of a part of the procedures, so the auxiliary support frame 40 may be installed after some procedures are completed, but before the auxiliary support frame 40 is installed, the root support ring 20 may ensure that the root of the blade body 10 is not deformed.

It should be noted that the auxiliary support frame 40 in this embodiment may be similar to the deformation preventing device in the related art, but compared to the wind turbine blade after the deformation preventing device in the related art is removed, there is no corresponding root support structure in the wind turbine blade, and in this embodiment, the root support ring 20 can ensure that the root of the blade body 10 is not deformed before the auxiliary support frame 40 is not installed. And after the auxiliary support frame 40 is installed, the root supporting capability of the blade body 10 can be improved.

In some embodiments, the auxiliary support frame 40 may be a rod, that is, two ends of the rod are respectively connected to two positions of the blade root support ring 20, so as to provide a support function for the blade root support ring 20, and ensure that the blade root support ring 20 is not deformed.

In some embodiments, the auxiliary support bracket 40 may be a connection plate connected to the root support ring 20 to support the root support ring 20.

In some embodiments, the auxiliary support 40 may be a polygonal structure such as a tripod, a rectangular frame, etc.

In one embodiment, as shown in fig. 2, the auxiliary support frame 40 and the root baffle 30 are respectively connected to two side surfaces of the root support ring 20, that is, the auxiliary support frame 40 is connected to the side surface of the root support ring 20 facing the blade tip, the root baffle 30 is connected to the side surface of the root support ring 20 facing the blade root, or the auxiliary support frame 40 is connected to the side surface of the root support ring 20 facing the blade root, and the root baffle 30 is connected to the side surface of the root support ring 20 facing the blade tip, so as to ensure the connection feasibility and reliable support effect.

In some embodiments, as shown in fig. 4 and 6, the auxiliary support frame 40 includes: a center connecting portion 41; a plurality of connecting rods 42 are provided, and both ends of the connecting rods 42 are respectively connected with the central connecting part 41 and the blade root support ring 20. The plurality of connecting rods 42 converge on the central connecting portion 41, i.e. the central connecting portion 41 is located in the middle of the blade body 10, and the plurality of connecting rods 42 are arranged around the central connecting portion 41, thereby realizing support of the blade root support ring 20 at a plurality of positions.

It should be noted that the connecting rods 42 are arranged in pairs, and two connecting rods 42 in pairs are connected to the central connecting portion 41 relatively, that is, the two connecting rods 42 support two positions of the blade root support ring 20 relatively, so as to ensure stable support, improve the support effect, and ensure that the blade root support ring 20 is uniformly supported.

Specifically, the auxiliary supporting frame 40 is a spoke-type structure, and in this embodiment, the auxiliary supporting frame 40 may be a cross spoke-type structure. In other embodiments, the auxiliary support 40 may be a spider-type structure.

Referring to fig. 3, 4 and 6, the auxiliary support frame 40 includes 4 connecting rods 42, and four connecting rods 42 may be uniformly connected to the central connecting portion 41, so as to effectively support the blade root support ring 20.

In one embodiment, the auxiliary support 40 may be an auxiliary steel frame.

In one embodiment, as shown in fig. 5, a plurality of support connection portions 50 are disposed on the blade root support ring 20, the plurality of support connection portions 50 are disposed at intervals along the circumferential direction of the blade root support ring 20, and the plurality of support connection portions 50 are respectively connected to the plurality of connecting rods 42. The support connection 50 is used to interconnect the connecting rod 42 and the root support ring 20, and the support connection 50 is an intermediate adapter structure.

As shown in fig. 7, the support connection portion 50 is provided with a connection hole 51, and after the connection between the connection rod 42 and the support connection portion 50 is achieved, the connection rod 42 and the support connection portion 50 can be fixed through the connection hole 51. The coupling holes 51 may be positioning pin holes, bolt holes, or the like.

In some embodiments, the end of the connecting rod 42 may be directly sleeved on the supporting connection portion 50, and the connecting rod 42 and the supporting connection portion 50 are fixed by a fastening structure such as a positioning pin or a bolt.

In one embodiment, the support connection 50 may be a connection block, and the support connection 50 may be directly connected to the surface of the root support ring 20, for example by an adhesive glue. The support connection 50 may also be partially attached to the inside of the root support ring 20, for example by means of an adhesive, or may be molded directly into the inside of the root support ring 20.

In one embodiment, the support connection 50 may be a pure glass fiber reinforced plastic structure.

In one embodiment, at least one of the plurality of connecting rods 42 is a telescoping rod, i.e., the length of the connecting rod 42 is adjustable to accommodate the inner diameter of the root support ring 20 and also to facilitate installation of the auxiliary support bracket 40.

Specifically, the connecting rod 42 may include a screw portion, and the protruding length of the screw portion is changed by rotating the screw portion, thereby achieving the distance adjustment. Alternatively, the connecting rod 42 may be a piston rod of a hydraulic cylinder or an air cylinder, thereby achieving the extension and retraction.

As shown in fig. 6, two of the 4 connecting rods 42 may be telescopic rods, and the other two may be fixed rods.

The utility model discloses a blade root support ring 20 and blade root baffle 30 among the wind-powered electricity generation blade are two independent structures, its design for the flexible baffle in the correlation technique, can regard as with blade root baffle split for baffle collar (blade root support ring 20) and flexible baffle body (blade root baffle 30) part, the baffle collar that bonds during the compound die, install the flexible baffle body again during aftertreatment, guarantee that there is the reinforcement inside blade root after the blade drawing of patterns always and support and prevent the deformation, and for improving the shape effect of preapring for an unfavorable turn of events, set up a plurality of support interfaces (support connecting portion 50) that are used for connecting auxiliary steel frame (auxiliary stay frame 40) on the flexible baffle collar, install and demolish as required, the blade root deformation of the whole circulation process of control blade.

Before or after the blades are matched with the mold, for example before demolding, a baffle installation ring is installed at a proper position of the blade root, and the baffle installation ring can be of a glass fiber reinforced plastic sandwich structure with the same thickness as the baffle body. The baffle mounting ring can be designed into a multi-petal type for convenient installation, and is installed at a corresponding position in the die assembly process.

In order to improve the deformation prevention effect of the baffle mounting ring, a support interface can be arranged on the baffle mounting ring, and an auxiliary steel frame support is installed. The auxiliary steel frame support interface on the baffle mounting ring is of a pure glass fiber reinforced plastic structure, can be embedded into the baffle mounting ring body or bonded on the surface of the baffle mounting ring, and is generally connected with the auxiliary steel frame support in a bolt, a positioning pin, a shape matching mode and the like. The auxiliary steel frame support is generally in a spoke type, such as a cross type and a rice type, and has a diameter adjusting function. And (5) performing post-treatment process, namely dismantling the auxiliary support steel frame as required.

The post-processing procedure, installation flexible baffle body, demolish auxiliary steel frame support front and back all can go on, the installation back detachable auxiliary steel frame of flexible baffle body supports, forms complete blade root platform, as shown in fig. 1 and fig. 2, utilizes root platform's wholeness to control the blade root and warp.

The utility model discloses a wind-powered electricity generation blade all keeps the inside support of blade root in the blade full blade circulation process such as blade drawing of patterns to blade root polishing, blade root drilling, and the precision of blade drilling, blade team etc. is guaranteed to the deflection of control blade root. Through the design of the original flexible baffle of split, the baffle mounting ring is installed before the blade is demolded, the installation difficulty of the baffle of the post-treatment process is reduced, the glue layer of the baffle installation is controllable, and the reinforcement can be cancelled.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and exemplary embodiments be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A wind turbine blade, comprising:

a blade body (10), the blade body (10) comprising a cavity (11);

a blade root support ring (20), the blade root support ring (20) being mounted in the cavity (11), the blade root support ring (20) being connected with the blade body (10) for supporting the root of the blade body (10);

a blade root baffle (30), the blade root baffle (30) being mounted in the cavity (11).

2. Wind turbine blade according to claim 1, characterized in that the root baffle (30) is connected to the root support ring (20).

3. Wind turbine blade according to claim 1, characterised in that the blade root support ring (20) is of sandwich construction.

4. Wind turbine blade according to claim 1, characterized in that the blade root support ring (20) is of one-piece construction.

5. The wind turbine blade as claimed in claim 1, characterised in that the blade root support ring (20) comprises a plurality of support sections, which are arranged in succession in a spliced manner in the circumferential direction of the mould cavity (11).

6. Wind turbine blade according to claim 1, characterized in that the blade root support ring (20) is integrally formed with the blade body (10).

7. Wind turbine blade according to claim 1, characterized in that the blade root support ring (20) is detachably connected with the blade body (10).

8. The wind blade as claimed in any one of claims 1 to 7, further comprising:

an auxiliary support bracket (40), said auxiliary support bracket (40) being connected to said root support ring (20) for supporting said root support ring (20).

9. Wind turbine blade according to claim 8, characterised in that the auxiliary support frame (40) and the blade root baffle (30) are connected to the two sides of the blade root support ring (20) respectively.

10. Wind turbine blade according to claim 9, wherein the auxiliary support frame (40) comprises:

a center connecting portion (41);

the connecting rods (42) are multiple, and the two ends of the connecting rods (42) are connected with the central connecting part (41) and the blade root supporting ring (20) respectively.

11. The wind turbine blade as claimed in claim 10, wherein a plurality of support connection portions (50) are provided on the blade root support ring (20), the plurality of support connection portions (50) are provided at intervals along the circumferential direction of the blade root support ring (20), and the plurality of support connection portions (50) are respectively connected to the plurality of connecting rods (42).

12. Wind blade according to claim 10 or 11, wherein at least one of the connecting rods (42) is a telescopic rod.