Wind driven generator blade

Abstract

The utility model relates to the technical field of wind power generation, in particular to a wind driven generator blade which comprises a rotating shaft and a hub, a blade body is arranged on the outer side of the hub, and a supporting mechanism is arranged in the blade body. The supporting mechanism comprises a first baffle, a supporting rod and a second baffle. The utility model has the beneficial effects that the blades can be detached and mounted on the outer side of the supporting rod in a segmented manner, and can be detached and independently replaced when the surfaces of the blades are rusted, abraded and the like, so that trouble and energy are saved, and the blades can be detached, mounted and maintained in a segmented manner; the supporting rods are detachably combined and installed through the assembling strips and the second bolts, the length of the supporting rods can be adjusted, disassembling and replacing are convenient, and therefore the supporting rods can be matched with the blades to be disassembled, maintained and replaced in a segmented mode.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a blade of a wind turbine generator. Background Art

[0002] A wind turbine generator is a power device that converts wind energy into mechanical work. The mechanical work drives the rotor to rotate, and finally outputs alternating current. The working principle of a wind turbine generator is relatively simple. The wind wheel rotates under the action of wind, converting the kinetic energy of the wind into the mechanical energy of the wind wheel shaft. The generator rotates to generate electricity driven by the wind wheel shaft.

[0003] The generator blade is the most important and basic component of a wind turbine generator. Its good design, reliable quality and excellent performance are the decisive factors to ensure the normal and stable operation of the unit. The design of the blade in a wind turbine generator directly affects the utilization effect of the wind and the conversion efficiency of wind energy, directly affects its annual power generation, and the construction and operation costs of the wind turbine generator set. It is an important link in wind energy utilization.

[0004] For example, the Chinese patent publication number "CN221322580U" in the prior art provides a blade of a wind turbine generator, including a blade hub and three evenly distributed blades. The front end face of the blade hub is fixedly connected with three evenly distributed sleeve frames. Installation blocks are sleeved inside the three sleeve frames. One ends of the three installation blocks respectively extend to the inner sides of the three sleeve frames, and arc-shaped grooves are formed in the upper end faces thereof. A positioning rod is fixedly connected to the middle of the front end face of the blade hub. One ends of the three installation blocks respectively abut against the outer wall of the positioning rod.

[0005] This device facilitates the backward movement of the fixing ring when it rotates, so that the fixing ring can enter the interiors of the three arc-shaped grooves, and further facilitates the extrusion of the rear sides of the three arc-shaped grooves by the fixing ring, so as to simultaneously fix the three sleeve frames and the three blades.

[0006] For the existing blades of wind turbine generators, when the length of the blade is relatively long and rust and wear occur on its surface, the whole blade needs to be disassembled and replaced, which is rather troublesome and wasteful. The blade cannot be disassembled and installed in sections, which is not conducive to the sectional disassembly, maintenance and replacement of the blade. At the same time, there is a lack of a good support and reinforcement structure inside the blade. During the rotation of the blade, its surface is prone to bending or even breaking, and its overall strength is insufficient. Summary of the Utility Model

[0007] The purpose of the utility model is to solve the disadvantages in the prior art that when the length of the blade is relatively long and rust and wear occur on its surface, the whole blade needs to be disassembled and replaced, which is rather troublesome and wasteful. The blade cannot be disassembled and installed in sections, which is not conducive to the sectional disassembly, maintenance and replacement of the blade, and to provide a blade of a wind turbine generator.

[0008] To achieve the above object, the utility model provides the following technical solutions:

[0009] Design a wind turbine blade, including a rotating shaft and a hub. A blade is arranged outside the hub, and a support mechanism is arranged inside the blade; the support mechanism includes a first baffle, a support rod and a second baffle. The support rod is arranged between the first baffle and the second baffle and passes through the inside of the blade. Installation columns are fixed on both sides of the support rod. A first connection hole is opened inside the installation column, and a second connection hole is opened on the surface of the blade. A first bolt is inserted into the second connection hole and the first connection hole. An assembly mechanism is arranged in the middle of the support mechanism; the assembly mechanism is arranged between the two support rods and is used for disassembling and assembling the support rods.

[0010] Furthermore, the assembly mechanism includes an assembly strip and a third connection hole opened on its surface. The support rod is of a rectangular hollow structure. Fourth connection holes are opened at the upper and lower ends of the support rod. A second bolt passes through the fourth connection hole and the third connection hole, and the other end of the second bolt is connected with a nut.

[0011] Furthermore, a connecting plate is installed around the outside of the hub. A third bolt for firmly installing the connecting plate on the surface of the hub is connected to the surface of the connecting plate, and a connecting column is fixed on the outside of the connecting plate.

[0012] Furthermore, the first baffle fixed at one end of the support rod is fixedly connected with the outer end of the connecting column. The second baffle is fixed at the outer end of the support rod far from the hub. The first baffle and the second baffle are respectively arranged at both ends of the blade.

[0013] Furthermore, the hub is installed on the surface of the rotating shaft. The blades are arranged in segments and correspond to the number of support rods. Reinforcing plates are fixed inside the blades, and the reinforcing plates are located on both sides of the support rods.

[0014] Furthermore, the shapes of the first baffle and the second baffle are the same as the cross-sectional shape of the blade and are connected to each other in a fitting manner. The installation columns are evenly distributed on the surface of the support rod.

[0015] Furthermore, the outer end of the installation column abuts against the inner wall of the blade. The first connection hole is of a threaded hole structure and is aligned with the second connection hole, and is in threaded fit connection with the first bolt, and is used for detachably and firmly installing the blade on the outside of the support rod.

[0016] Furthermore, the assembly bar is of a rectangular structure and is slidably and snap-fitted inside the two assembled support rods. The third connection hole and the fourth connection hole are aligned vertically, and the two assembled support rods and the assembly bar are detachably and firmly installed and connected by the second bolt and the nut.

[0017] A wind turbine blade proposed by the present utility model has the following beneficial effects:

[0018] 1. In the present utility model, support rods are arranged on the outer side of the hub through connecting plates and connecting columns. Therefore, the blades are segmented and installed on the outer side of the support rods and connected by mounting columns and first bolts. Thus, the blades can be disassembled and installed segment by segment on the outer side of the support rods. When rust, wear, etc. occur on the blade surface, they can be disassembled and replaced individually, which is relatively convenient and cost-saving, and is conducive to the segmented disassembly, installation and maintenance of the blades.

[0019] 2. The support rods of the present utility model are detachably assembled and installed through an assembly bar and a second bolt, and the length of the support rods can be adjusted, and it is also convenient for disassembly and replacement. Therefore, it can cooperate with the blades for segmented disassembly and maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0021] Figure 2 is of the present utility model Figure 1 partial structural schematic diagram of the support mechanism and the assembly mechanism;

[0022] Figure 3 is of the present utility model Figure 2 enlarged view of part A;

[0023] Figure 4 is of the present utility model Figure 1 partial connection structure schematic diagram of the blade and the support rod;

[0024] Figure 5 is of the present utility model Figure 1 partial structural schematic diagram of the support rod;

[0025] Figure 6 is of the present utility model Figure 1 partial structural schematic diagram of the support rod and the assembly bar.

[0026] In the figure: 1, rotating shaft; 2, hub; 3, blade; 4, third bolt; 5, connecting column; 6, connecting plate; 7, first baffle; 8, second baffle; 9, support rod; 10, mounting column; 11, second bolt; 12, nut; 13, assembly strip; 14, third connection hole; 15, fourth connection hole; 16, first connection hole; 17, reinforcement plate; 18, first bolt; 19, second connection hole. Detailed implementation mode

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Embodiment

[0028] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , a wind turbine blade shown in the figure, including a rotating shaft 1 and a hub 2. A blade 3 is arranged outside the hub 2, and a support mechanism is arranged inside the blade 3; the hub 2 is installed on the surface of the rotating shaft 1, the blade 3 is arranged in sections and corresponds to the number of the support rods 9, and a reinforcement plate 17 is fixed inside the blade 3, and the reinforcement plate 17 is located on both sides of the support rod 9.

[0029] The support mechanism includes a first baffle 7, a support rod 9 and a second baffle 8. The support rod 9 is arranged between the first baffle 7 and the second baffle 8 and passes through the inside of the blade 3. Mounting columns 10 are fixed on both sides of the support rod 9. The shapes of the first baffle 7 and the second baffle 8 are the same as the cross-sectional shape of the blade 3 and are connected in a fitting manner. The mounting columns 10 are evenly distributed on the surface of the support rod 9.

[0030] A first connection hole 16 is opened inside the mounting column 10, a second connection hole 19 is opened on the surface of the blade 3, and a first bolt 18 is inserted into the inside of the second connection hole 19 and the first connection hole 16. An assembly mechanism is arranged in the middle of the support mechanism; the assembly mechanism is arranged between the two support rods 9 and is used for disassembling and assembling the support rods 9.

[0031] A connecting plate 6 is installed around the outside of the hub 2. A third bolt 4 for tightly installing the connecting plate 6 on the surface of the hub 2 is connected to the surface of the connecting plate 6, and a connecting column 5 is fixed on the outside of the connecting plate 6.

[0032] The first baffle 7 fixed to one end of the support rod 9 is fixedly connected to the outer end of the connecting column 5. The second baffle 8 is fixed to the outer end of the support rod 9 away from the hub 2. The first baffle 7 and the second baffle 8 are respectively arranged at both ends of the blade 3.

[0033] The support rod 9 is arranged on the outer side of the hub 2 through the connecting plate 6 and the connecting column 5. Therefore, the blade 3 is segmented and installed on the outer side of the support rod 9 and connected through the mounting column 10 and the first bolt 18. Thus, the blade 3 can be disassembled and installed in segments on the outer side of the support rod 9. When rust, wear and other conditions occur on the surface of the blade 3, it can be disassembled and replaced separately, which is relatively convenient and economical, and is conducive to the segmented disassembly, installation and maintenance of the blade 3.

[0034] The outer end of the mounting column 10 abuts against the inner wall of the blade 3. The first connection hole 16 is of a threaded hole structure and is aligned with the second connection hole 19. It is threadedly engaged with the first bolt 18 to detachably and firmly install the blade 3 on the outer side of the support rod 9. Embodiment

[0035] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown in, a wind turbine blade includes a rotating shaft 1 and a hub 2. A blade 3 is arranged on the outer side of the hub 2. A support mechanism is arranged inside the blade 3. The support mechanism includes a first baffle 7, a support rod 9 and a second baffle 8. The support rod 9 is arranged between the first baffle 7 and the second baffle 8 and passes through the inside of the blade 3. Mounting columns 10 are fixed on both sides of the support rod 9. A first connection hole 16 is formed inside the mounting column 10. A second connection hole 19 is formed on the surface of the blade 3. A first bolt 18 is inserted into the second connection hole 19 and the first connection hole 16. An assembly mechanism is arranged in the middle of the support mechanism.

[0036] The support rod 9 is arranged on the outer side of the hub 2 through the connecting plate 6 and the connecting column 5. Therefore, the blade 3 is segmented and installed on the outer side of the support rod 9 and connected through the mounting column 10 and the first bolt 18. Thus, the blade 3 can be disassembled and installed in segments on the outer side of the support rod 9. When rust, wear and other conditions occur on the surface of the blade 3, it can be disassembled and replaced separately, which is relatively convenient and economical, and is conducive to the segmented disassembly, installation and maintenance of the blade 3.

[0037] The assembly mechanism is arranged between the two support rods 9 and is used for disassembling and assembling the support rods 9. The assembly mechanism includes an assembly strip 13 and third connection holes 14 formed on its surface. The support rod 9 is a rectangular hollow structure, and fourth connection holes 15 are formed at the upper and lower ends of the support rod 9. A second bolt 11 passes through the interiors of the fourth connection holes 15 and the third connection holes 14, and the other end of the second bolt 11 is connected with a nut 12.

[0038] The support rod 9 is detachably assembled and installed through the assembly strip 13 and the second bolt 11, and the length of the support rod 9 can be adjusted, and it is also convenient for disassembly and replacement. Therefore, it can cooperate with the blade 3 for segmented disassembly, maintenance and replacement.

[0039] The assembly strip 13 is a rectangular structure and is slidably clamped and installed inside the two assembled support rods 9. The third connection holes 14 and the fourth connection holes 15 are vertically aligned, and the two assembled support rods 9 and the assembly strip 13 are detachably and firmly installed and connected through the second bolt 11 and the nut 12.

[0040] Working mode: The support rod 9 is arranged on the outer side of the hub 2 through the connecting plate 6 and the connecting column 5. Therefore, the blade 3 is segmented and installed on the outer side of the support rod 9 and is connected through the mounting column 10 and the first bolt 18. Therefore, the blade 3 can be segmented and disassembled and installed on the outer side of the support rod 9. When rust, wear and other conditions occur on the surface of the blade 3, it can be disassembled and replaced individually, which is relatively labor-saving and cost-saving, and is beneficial to the segmented disassembly, installation and maintenance of the blade 3.

[0041] The support rod 9 is detachably assembled and installed through the assembly strip 13 and the second bolt 11, and the length of the support rod 9 can be adjusted, and it is also convenient for disassembly and replacement. Therefore, it can cooperate with the blade 3 for segmented disassembly, maintenance and replacement.

[0042] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitution or change, and should be covered by the protection scope of the present invention.

Claims

1. A wind turbine blade, comprising a rotating shaft (1) and a hub (2), characterized in that: The outer side of the hub (2) is provided with a blade (3), and the inner side of the blade (3) is provided with a supporting mechanism; The support mechanism comprises a first baffle (7), a support rod (9) and a second baffle (8); the support rod (9) is arranged between the first baffle (7) and the second baffle (8) and passes through the interior of the blade (3); mounting columns (10) are fixed on both sides of the support rod (9); a first connecting hole (16) is formed inside the mounting column (10); a second connecting hole (19) is formed on the surface of the blade (3); first bolts (18) are inserted into the interiors of the second connecting hole (19) and the first connecting hole (16); and an assembly mechanism is arranged in the middle of the support mechanism; The assembly mechanism is arranged between the two support rods (9) and is used for disassembling and assembling the support rods (9).

2. A wind turbine blade according to claim 1, characterized in that: The assembly mechanism comprises an assembly bar (13) and a third connection hole (14) formed on its surface; the support rod (9) is a rectangular hollow structure; fourth connection holes (15) are formed at the upper and lower ends of the support rod (9); a second bolt (11) passes through the inside of the fourth connection hole (15) and the third connection hole (14); and the other end of the second bolt (11) is connected to a nut (12).

3. A wind turbine blade according to claim 1, characterized in that: A connecting plate (6) is installed around the outer side of the wheel hub (2), a third bolt (4) for fastening the connecting plate (6) to the surface of the wheel hub (2) is connected to the surface of the connecting plate (6), and a connecting column (5) is fixed to the outer side of the connecting plate (6).

4. A wind turbine blade according to claim 3, characterized in that: The first baffle (7) fixed to one end of the support rod (9) is fixedly connected to the outer end of the connecting column (5), the second baffle (8) is fixed to the outer end of the support rod (9) away from the hub (2), and the first baffle (7) and the second baffle (8) are respectively arranged at both ends of the blade (3).

5. A wind turbine blade according to claim 1, characterized in that: The hub (2) is mounted on the surface of the rotating shaft (1); the blades (3) are arranged in sections and correspond to the number of the support rods (9); a reinforcing plate (17) is fixed inside the blades (3); and the reinforcing plate (17) is located on both sides of the support rod (9).

6. A wind turbine blade according to claim 1, characterized in that: The shapes of the first baffle plate (7) and the second baffle plate (8) are the same as the cross-sectional shape of the blade (3), and are fitted and connected to each other, and the mounting columns (10) are evenly distributed on the surface of the support rod (9).

7. A wind turbine blade according to claim 1, characterized in that: The outer end of the mounting column (10) abuts against the inner wall of the blade (3); the first connecting hole (16) is a threaded hole structure and is aligned with the second connecting hole (19). It is threadedly connected to the first bolt (18) and is used to detachably fasten the blade (3) to the outer side of the support rod (9).

8. A wind turbine blade according to claim 2, characterized in that: The assembly bar (13) is of a rectangular structure and is slidably mounted inside the two assembled support rods (9). The third connection hole (14) is vertically aligned with the fourth connection hole (15), and the two assembled support rods (9) and the assembly bar (13) are detachably fastened and connected via the second bolt (11) and the nut (12).

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