Modularized wind power blade connecting structure

Abstract

The utility model discloses a modularized wind power blade connecting structure which comprises modularized blades and a connecting assembly. The modular blade comprises a first modular blade and a second modular blade; the connecting assembly comprises positioning columns and positioning holes which are fixedly installed and formed in the two ends of the first module blade and the two ends of the second module blade correspondingly. According to the modularized wind power blade connecting structure, after the first module blade and the second module blade are connected, the positioning column, the connecting plate and the second screw rod at the upper end of the second module blade are installed in the first module blade in a divided mode, so that a three-layer connecting structure of an outer layer, a middle layer and an inner layer is formed; the connection strength between the first module blade and the second module blade is ensured, so that the stability of the first module blade and the second module blade in use after connection is ensured, and meanwhile, the connection tightness between the first module blade and the second module blade can be enhanced through the connecting plates fixed in the left supporting plate and the right supporting plate through the bolts and the second screws fixed on the first fixing frames.

Description

Technical Field

[0001] The utility model relates to the technical field of modular wind turbine blades, and specifically relates to a connection structure for modular wind turbine blades. Background Technique

[0002] Modular wind turbine blades are an innovative technology in the field of wind power generation. It combines multiple small blades into a large blade structure. The connection structure of modular wind turbine blades refers to the connection and fixation structure when multiple small blades are assembled, so as to ensure the stability during the use of the blade combination.

[0003] For the existing connection structure of modular wind turbine blades, such as a connection structure of modular wind turbine blades disclosed in CN216767623U, although it has the advantages of bonding the main beam box module with the leading edge module and the trailing edge module, without bolt connection, reducing the weight of the wind turbine blade and also reducing the lightning protection design cost, there is no multi-layer connection of the outer layer, middle layer and inner layer between the module blade connections. Therefore, it is inconvenient to ensure the stability between the connections in a harsh environment. For this reason, we propose a connection structure for modular wind turbine blades. Content of the Utility Model

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by the utility model is as follows:

[0006] A connection structure for modular wind turbine blades, comprising: modular blades and connection components; the modular blades include a first module blade and a second module blade; the connection components include positioning columns and positioning holes respectively fixedly installed and opened at both ends of the first module blade and the second module blade, left support plates and right support plates respectively fixedly installed on both sides inside the first module blade and the second module blade, installation cavities opened inside the left support plates and the right support plates, connecting plates fixedly installed by welding at the outer ends of the left support plates and the right support plates, a first fixing frame and a second fixing frame respectively fixedly installed between the left support plates and the right support plates inside the first module blade and the second module blade, and a first screw and a second screw respectively fixedly installed on both sides at the outer ends of the first fixing frame and the second fixing frame.

[0007] Preferably, installation holes and round holes are respectively correspondingly opened inside the left support plates and the right support plates and inside the connecting plates.

[0008] Preferably, bolts are movably installed in both the installation holes and the round holes.

[0009] Preferably, first insertion holes and second insertion holes are respectively opened on both sides inside the first fixing frame and the second fixing frame, and the second screw is movably installed in the first insertion hole.

[0010] Preferably, locking nuts are also movably installed at the outer ends of the second screws.

[0011] Preferably, the positioning posts and the positioning holes are matched with each other, and the connecting plates and the installation cavities are matched with each other.

[0012] By adopting the above technical solutions, the beneficial effects achieved by the present utility model are as follows:

[0013] In the present utility model, after the first module blades and the second module blades are connected, the positioning posts, the connecting plates and the second screws at the upper ends of the second module blades will be separately installed into the first module blades to form a three-layer connection structure of an outer layer, a middle layer and an inner layer, ensuring the connection strength between the first module blades and the second module blades, thereby ensuring the stability during their use after connection. At the same time, the connecting plates fixed by bolts in the left support plate and the right support plate, and the second screws fixed on the first fixing frame can also strengthen the fastening between the first module blades and the second module blades. Description of the Drawings

[0014] Figure 1 is the overall structure diagram of the present utility model;

[0015] Figure 2 is another perspective view of the present utility model;

[0016] Figure 3 is the disassembly diagram of the first module blades and the second module blades of the present utility model;

[0017] Figure 4 is another perspective of the disassembly diagram of the first module blades and the second module blades of the present utility model;

[0018] Figure 5 is the transverse cross-sectional view of the present utility model.

[0019] Reference Signs:

[0020] 100, modular blade; 101, first module blade; 102, second module blade;

[0021] 200, connection assembly; 201, positioning post; 202, positioning hole; 203, left support plate; 204, right support plate; 205, installation cavity; 206, connecting plate; 207, first fixing frame; 208, second fixing frame; 209, first screw; 210, second screw; 211, installation hole; 212, round hole; 213, bolt; 214, first jack; 215, second jack; 216, locking nut. Detailed Embodiments

[0022] To make the objectives, technical solutions, and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present utility model and the features in the embodiments may be combined with each other.

[0023] The following describes a modular wind turbine blade connection structure provided by some embodiments of the present utility model in conjunction with the accompanying drawings.

[0024] Embodiment 1:

[0025] Combined Figures 1-5 As shown, a modular wind turbine blade connection structure provided by the present utility model includes: a modular blade 100 and a connection component 200; the modular blade 100 includes a first modular blade 101 and a second modular blade 102; the connection component 200 includes a positioning post 201 and a positioning hole 202 fixedly installed and opened at both ends of the first modular blade 101 and the second modular blade 102 respectively, a left support plate 203 and a right support plate 204 fixedly installed on both sides inside the first modular blade 101 and the second modular blade 102 respectively, an installation cavity 205 opened inside both the left support plate 203 and the right support plate 204, a connecting plate 206 welded and fixedly installed at the outer ends of both the left support plate 203 and the right support plate 204, a first fixing frame 207 and a second fixing frame 208 fixedly installed between the left support plate 203 and the right support plate 204 inside the first modular blade 101 and the second modular blade 102 respectively, a first screw 209 and a second screw 210 fixedly installed on both sides of the outer ends of the first fixing frame 207 and the second fixing frame 208 respectively, an installation hole 211 and a round hole 212 correspondingly opened inside the left support plate 203 and the right support plate 204 and inside the connecting plate 206 respectively, bolts 213 movably installed inside both the installation hole 211 and the round hole 212, a first jack 214 and a second jack 215 opened on both sides inside the first fixing frame 207 and the second fixing frame 208 respectively, and the second screw 210 is movably installed inside the first jack 214, and locking nuts 216 are movably installed at the outer ends of the second screw 210. The positioning post 201 and the positioning hole 202 are matched with each other, and the connecting plate 206 and the installation cavity 205 are matched with each other.

[0026] Specifically, the modular wind turbine blade is an innovative technology in the field of wind power generation. It combines multiple small blades into a large blade structure. The connection structure of the modular wind turbine blade refers to the connection and fixation structure when multiple small blades are assembled, so as to ensure the stability during the use of the combined blades. After the first module blade 101 and the second module blade 102 in this modular blade 100 are connected, the positioning posts 201, connecting plates 206 and second screws 210 at the upper end of the second module blade 102 will be separately installed into the positioning holes 202 in the outer layer, the installation cavities 205 in the middle layer and the first jacks 214 in the inner layer of the first module blade 101, so as to form a three-layer connection structure of the outer layer, the middle layer and the inner layer, ensuring the connection strength between the first module blade 101 and the second module blade 102, and thus ensuring its stability during use. At the same time, the connecting plates 206 fixed by bolts 213 in the left support plate 203 and the right support plate 204, and the second screws 210 fixed on the first fixing frame 207 can also strengthen the fastening between the first module blade 101 and the second module blade 102, and further improve the connection strength after the assembly of this modular blade 100.

[0027] Working principle and usage process of the present utility model:

[0028] When the first module blade 101 and the second module blade 102 are assembled, first install the connecting plates 206 on both sides of the front end of the second module blade 102 into the installation cavities 205 in the left support plate 203 and the right support plate 204 at the rear end of the first module blade 101, and continuously move the second module blade 102 forward, so that multiple groups of positioning posts 201 in the outer layer of the second module blade 102 are matched and installed into the positioning holes 202 at the rear end of the first module blade 101, the connecting plates 206 in the middle layer on both sides of the front end of the second module blade 102 are matched and installed into the installation cavities 205 on both sides of the first module blade 101, and the second screws 210 in the inner layer on both sides of the front end of the second module blade 102 are installed into the first jacks 214 on both sides of the first fixing frame 207 in the first module blade 101, thus completing the preliminary assembly of the first module blade 101 and the second module blade 102. After installing bolts 213 into the installation holes 211 and round holes 212 on both sides in the first module blade 101 and locking and installing lock nuts 216 with the outer ends of the second screws 210 on both sides, the fastening after the assembly of the first module blade 101 and the second module blade 102 can be completed.

[0029] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A modular wind turbine blade connection structure, characterized in that: include: Modular blade (100), connection assembly (200); The modular blade (100) comprises a first modular blade (101) and a second modular blade (102); The connection assembly (200) comprises positioning columns (201) and positioning holes (202) respectively fixedly installed and provided at both ends of the first module blade (101) and the second module blade (102), a left support plate (203) and a right support plate (204) respectively fixedly installed on both sides of the first module blade (101) and the second module blade (102), a mounting cavity (205) provided in the left support plate (203) and the right support plate (204), a connecting plate (206) welded and fixedly installed at the outer ends of the left support plate (203) and the right support plate (204), a first fixing frame (207) and a second fixing frame (208) respectively fixedly installed between the left support plate (203) and the right support plate (204) in the first module blade (101) and the second module blade (102), and a first screw rod (209) and a second screw rod (210) respectively fixedly installed on both sides of the outer ends of the first fixing frame (207) and the second fixing frame (208).

2. A modular wind turbine blade connection structure according to claim 1, characterized in that: The left support plate (203) and the right support plate (204) are also provided with mounting holes (211) and circular holes (212) corresponding to the connection plate (206).

3. A modular wind turbine blade connection structure according to claim 2, characterized in that: Bolts (213) are also movably installed in the installation hole (211) and the circular hole (212).

4. The modular wind turbine blade connection structure according to claim 1, characterized in that: A first plug hole (214) and a second plug hole (215) are respectively provided on both sides of the first fixing frame (207) and the second fixing frame (208), and the second screw rod (210) is movably installed in the first plug hole (214).

5. The modular wind turbine blade connection structure according to claim 1, characterized in that: The outer ends of the second screw rods (210) are also movably mounted with locking nuts (216).

6. The modular wind turbine blade connection structure according to claim 1, characterized in that: The positioning column (201) and the positioning hole (202) match each other, and the connecting plate (206) and the installation cavity (205) match each other.

Images