Segmented assembly type fan blade

Abstract

The segmented assembly type fan blade comprises a first blade section and a second blade section, one side of the first blade section is concaved inwards to form a matching groove, one side of the second blade section protrudes outwards to form a matching protruding block, and limiting strips are fixedly installed on the outer wall face of the first blade section and the outer wall face of the second blade section correspondingly; a plurality of first rectangular holes are formed in the two limiting strips, connecting ring pieces are arranged outside the first blade section and the second blade section, limiting grooves matched with the limiting strips are formed in the connecting ring pieces, second rectangular holes with the number equal to that of the first rectangular holes are formed in the connecting ring pieces, and connecting pieces are slidably connected into the second rectangular holes. Through combined use of the limiting strips, the connecting ring pieces and the connecting pieces, multiple fixing modes are provided for the blades, the connecting ring pieces are connected in an inserted mode along the limiting strips and fixed through the connecting pieces, the connecting stability of the blades is enhanced, the blades are more stable when bearing wind power, and the service life is prolonged.

Description

Technical Field

[0001] This invention relates to the field of wind turbine blade technology, and more specifically, to a segmented assembled wind turbine blade. Background Technology

[0002] Wind energy, as a clean and renewable energy source, has enormous development potential. As the core equipment for wind power generation, the performance improvement and cost reduction of wind turbines are crucial to promoting the development of the wind energy industry. Traditional wind turbine blades typically employ a monolithic design, which presents significant manufacturing and transportation challenges. Therefore, the research and development of segmented, assembled wind turbine blades has become a hot topic in the current wind energy field.

[0003] In traditional wind turbine blade manufacturing, assembling blade segments can involve complex processes that require significant time and effort. This not only increases manufacturing costs but can also affect the overall performance of the blade due to errors during assembly. Furthermore, wind turbine blades must withstand enormous wind and centrifugal forces during high-speed rotation. If the blade connections are not secure enough, the blades may loosen, deform, or even break, severely impacting the performance and safety of the wind turbine. To address these issues, this device was invented. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a segmented assembled wind turbine blade to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a segmented assembled wind turbine blade, comprising a first blade segment and a second blade segment. One side of the first blade segment is recessed inward to form a mating groove, and one side of the second blade segment is protruded outward to form a mating protrusion, wherein the mating protrusion is adapted to the mating groove. The first blade segment is provided with multiple insertion slots, and the second blade segment is fixedly installed with an insertion rod adapted to the insertion slots. Limiting strips are fixedly installed on the outer wall surfaces of both the first and second blade segments. Multiple first rectangular holes are provided on both limiting strips. Connecting rings are provided on the outside of the first and second blade segments. Limiting grooves adapted to the limiting strips are provided on the connecting rings. Second rectangular holes, equal in number to the first rectangular holes, are provided on the connecting rings. Connecting members are slidably connected in the second rectangular holes.

[0006] Optionally, the top and bottom of the groove are provided with snap-fit ​​holes, and the top and bottom of the protrusion are provided with mounting holes. A connecting spring is fixedly installed in the mounting hole, and a snap-fit ​​block that matches the snap-fit ​​hole is fixedly installed on the outer end of the connecting spring.

[0007] Optionally, the cross-section of the limiting strip is an isosceles trapezoidal structure.

[0008] Optionally, both rectangular holes No. 1 and No. 2 are set horizontally.

[0009] Optionally, the connector includes a connecting rod that is adapted to the second rectangular hole. A handle is fixedly installed at one end of the connecting rod, and a second mounting hole is opened on both sides of the other end of the connecting rod. A second connecting spring is fixedly installed in the second mounting hole, and a limit block is fixedly installed at the outer end of the second connecting spring.

[0010] Optionally, limit frames are fixedly installed on both sides of the top of the connecting ring piece, and a connecting strip is provided between the two limit frames. The connecting strip has a No. 3 mounting hole at both ends, a No. 3 connecting spring is fixedly installed in the No. 3 mounting hole, and a stop block is fixedly installed on the outer end of the No. 3 connecting spring.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. This utility model, through the design of a matching groove and a matching protrusion, enables the first and second blade segments to quickly assemble, simplifying the assembly process and improving work efficiency; through the combined use of limiting strips, connecting rings, and connectors, multiple fixing methods are provided for the blades: the connecting rings are inserted along the limiting strips and fixed by the connectors, further enhancing the connection stability of the blades. This design makes the blades more stable when subjected to wind force and extends their service life.

[0013] 2. This utility model utilizes the cooperation between the snap-fit ​​block and the snap-fit ​​hole to achieve the initial assembly between the first blade segment and the second blade segment, enhancing the stability of the connection. This design not only improves the overall structural strength of the blade, but also ensures the safety of the blade when it rotates at high speed.

[0014] 3. This utility model is designed with connecting strips, which provide an additional fixing method for the assembly of blades and further improve the stability of the blades. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 A schematic diagram showing the connection between the first leaf segment and the second leaf segment provided by this utility model;

[0017] Figure 2 A schematic diagram of the overall structure of this utility model;

[0018] Figure 3 A schematic diagram of the structure of the first leaf segment provided by this utility model;

[0019] Figure 4 A schematic diagram of the structure of the second leaf segment provided by this utility model;

[0020] Figure 5 This is a front view of the structure of the second leaf segment provided by this utility model;

[0021] Figure 6 A schematic diagram of the structure of the connecting ring provided by this utility model;

[0022] Figure 7 This is a front view of the connecting ring piece provided by this utility model;

[0023] Figure 8 A schematic diagram of the connector provided by this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. First leaf segment; 2. Second leaf segment; 3. Mating groove; 4. Mating protrusion; 5. Insertion slot; 6. Insertion rod; 7. Limiting strip; 8. Connecting ring piece; 9. Rectangular hole No. 1; 10. Rectangular hole No. 2; 11. Limiting groove; 12. Connector; 1201. Connecting rod; 1202. Handle; 1203. Connecting spring No. 2; 1204. Limiting block; 13. Snap-fit ​​hole; 14. Connecting spring No. 1; 15. Snap-fit ​​block; 16. Limiting frame; 17. Connecting strip; 18. Connecting spring No. 3; 19. Stop block. Detailed Implementation

[0026] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Example:

[0029] See attached document Figures 1-4This embodiment of a segmented wind turbine blade includes a first blade segment 1 and a second blade segment 2. One side of the first blade segment 1 is recessed inward to form a mating groove 3, and one side of the second blade segment 2 is protruded outward to form a mating protrusion 4. The mating protrusion 4 is adapted to the mating groove 3. The first blade segment 1 is provided with a plurality of insertion slots 5, and the second blade segment 2 is fixedly installed with an insertion rod 6 adapted to the insertion slots 5. When assembling the first blade segment 1 and the second blade segment 2, the mating protrusion 4 and the mating groove 3 are used to achieve rapid mating between the first blade segment 1 and the second blade segment 2.

[0030] See attached document Figures 3-5 The mating groove 3 has snap-fit ​​holes 13 at both the top and bottom, and the mating protrusion 4 has mounting holes 1 at both the top and bottom. A connecting spring 14 is fixedly installed in the mounting hole 1, and a snap-fit ​​block 15 that matches the snap-fit ​​hole 13 is fixedly installed on the outer end of the connecting spring 14. When the mating protrusion 4 and the mating groove 3 are used to achieve the mating between the first leaf segment 1 and the second leaf segment 2, the snap-fit ​​block 15 is first pressed so that it retracts into the mounting hole 1. Then the mating between the first leaf segment 1 and the second leaf segment 2 is performed. When the snap-fit ​​block 15 on the mating protrusion 4 is just inserted into the snap-fit ​​hole 13 on the mating groove 3, the initial assembly between the first leaf segment 1 and the second leaf segment 2 is achieved, which enhances the stability of the connection.

[0031] See attached document Figures 1-4 , Figure 6 and Figure 8 Limiting strips 7 are fixedly installed on the outer wall of the first leaf segment 1 and the outer wall of the second leaf segment 2. The cross-section of the limiting strip 7 is an isosceles trapezoidal structure. The isosceles trapezoidal structure can ensure that the connecting ring 8 will not shake or misalign during insertion, thereby enhancing the stability of the connection. Multiple first rectangular holes 9 are opened on both limiting strips 7. Connecting ring 8 is provided on the outside of the first leaf segment 1 and the second leaf segment 2. The connecting ring 8 is provided with limiting grooves 11 that are adapted to the limiting strips 7. The connecting ring 8 is provided with second rectangular holes 10 in the same number as the first rectangular holes 9. The first rectangular holes 9 and the second rectangular holes 10 have the same longitudinal section structure. The first rectangular holes 9 and the second rectangular holes 10 are both arranged laterally. A connecting piece 12 is slidably connected in the second rectangular hole 10.

[0032] The connector 12 includes a connecting rod 1201 that is adapted to the second rectangular hole 10, that is, the connecting rod 1201 is also adapted to the first rectangular hole 9. A handle 1202 is fixedly installed at one end of the connecting rod 1201, and a second mounting hole is opened on both sides of the other end of the connecting rod 1201. A second connecting spring 1203 is fixedly installed in the second mounting hole, and a limit block 1204 is fixedly installed on the outer end of the second connecting spring 1203.

[0033] After the initial assembly between the first leaf segment 1 and the second leaf segment 2 is completed, the connecting ring 8 is inserted along the limiting strips 7 on both sides. When the first rectangular hole 9 and the second rectangular hole 10 on the same side are set coaxially, the limiting block 1204 on the connector 12 is pressed, so that the limiting block 1204 retracts into the second mounting hole. Then, the connecting rod 1201 is inserted into the corresponding first rectangular hole 9 and second rectangular hole 10. The connecting piece 12 is used to fix the position of the connecting ring 8, which further enhances the connection stability between the first leaf segment 1 and the second leaf segment 2 and ensures the overall structural strength of the blade.

[0034] See attached document Figure 6 and Figure 7 Limiting frames 16 are fixedly installed on both sides of the top of the connecting ring 8. A connecting strip 17 is provided between the two limiting frames 16. The connecting strip 17 has a No. 3 mounting hole at both ends. A No. 3 connecting spring 18 is fixedly installed in the No. 3 mounting hole. A stop block 19 is fixedly installed on the outer end of the No. 3 connecting spring 18. After the first leaf segment 1 and the second leaf segment 2 are assembled using the connecting ring 8, the stop block 19 at one end of the connecting strip 17 is pressed to retract into the No. 3 mounting hole. Then, this end is snapped into one of the limiting frames 16. After that, the other end of the connecting strip 17 is pressed to snap into the other limiting frame 16. The connecting strip 17 provides an additional fixing method for the assembly of the blades, further improving the stability of the blades and realizing the assembly between the first leaf segment 1 and the second leaf segment 2.

[0035] It should be noted that the connecting ring 8 and connecting strip 17 described in this application are both made of flexible materials.

[0036] This application, through the design of the mating groove 3 and the mating protrusion 4, enables the first leaf segment 1 and the second leaf segment 2 to quickly mate, simplifying the assembly process and improving work efficiency. By utilizing the mating of the snap-fit ​​block 15 and the snap-fit ​​hole 13, the initial assembly between the first leaf segment 1 and the second leaf segment 2 is achieved, enhancing the stability of the connection. Through the combined use of the limiting strip 7, the connecting ring 8 and the connector 12, multiple fixing methods are provided for the blade, further enhancing the connection stability of the blade. The design of the connecting strip 17 provides an additional fixing method for the assembly of the blade, further improving the stability of the blade.

[0037] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A segmented assembled wind turbine blade, comprising a first blade segment (1) and a second blade segment (2), wherein one side of the first blade segment (1) is recessed inward to form a mating groove (3), and one side of the second blade segment (2) protrudes outward to form a mating protrusion (4), and the mating protrusion (4) is adapted to the mating groove (3), characterized in that: The first leaf segment (1) is provided with multiple insertion slots (5), and the second leaf segment (2) is fixedly installed with an insertion rod (6) that is compatible with the insertion slots (5). Limiting strips (7) are fixedly installed on the outer wall of the first leaf segment (1) and the outer wall of the second leaf segment (2). Multiple first rectangular holes (9) are provided on both limiting strips (7). Connecting ring pieces (8) are provided on the outside of the first leaf segment (1) and the second leaf segment (2). Limiting grooves (11) that are compatible with the limiting strips (7) are provided on the connecting ring pieces (8). Second rectangular holes (10) are provided on the connecting ring pieces (8) in the same number as the first rectangular holes (9). Connecting pieces (12) are slidably connected in the second rectangular holes (10).

2. The segmented assembled wind turbine blade according to claim 1, characterized in that: The top and bottom of the mating groove (3) are provided with snap-fit ​​holes (13), and the top and bottom of the mating protrusion (4) are provided with mounting holes No.

1. A connecting spring (14) No. 1 is fixedly installed in the mounting hole No.

1. A snap-fit ​​block (15) that matches the snap-fit ​​hole (13) is fixedly installed on the outer end of the connecting spring (14).

3. The segmented assembled wind turbine blade according to claim 1, characterized in that: The cross-section of the limiting strip (7) is an isosceles trapezoidal structure.

4. The segmented assembled wind turbine blade according to claim 1, characterized in that: Both the first rectangular hole (9) and the second rectangular hole (10) are arranged horizontally.

5. A segmented assembled wind turbine blade according to claim 1, characterized in that: The connector (12) includes a connecting rod (1201) adapted to the second rectangular hole (10). A handle (1202) is fixedly installed at one end of the connecting rod (1201). Second mounting holes are opened on both sides of the other end of the connecting rod (1201). A second connecting spring (1203) is fixedly installed in the second mounting hole. A limit block (1204) is fixedly installed at the outer end of the second connecting spring (1203).

6. A segmented assembled wind turbine blade according to claim 1, characterized in that: Limiting frames (16) are fixedly installed on both sides of the top of the connecting ring (8). A connecting strip (17) is provided between the two limiting frames (16). The connecting strip (17) has three mounting holes at both ends. A connecting spring (18) is fixedly installed in the three mounting holes. A stop block (19) is fixedly installed on the outer end of the connecting spring (18).

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