Vertical axis folding wind turbine blade set

Abstract

The application provides a vertical shaft folding wind turbine blade group, which comprises a rib plate, blades, telescopic mechanisms, a power system, a cylinder and a connecting disc; the rib plate is not less than three groups and is composed of cavities reserved between two corresponding solid plates; the blades are folding and not less than three groups and can be folded in the cavities of the rib plate; the telescopic mechanisms are not less than six groups and are arranged at the upper end of the blades and the lower end of the blades; the power system is arranged at the upper end of the cylinder, is communicated with the telescopic mechanisms and drives the blades to make telescopic folding actions by the telescopic mechanisms; the cylinder is a hollow pipe material and is arranged at the center position of the rib plate; the connecting disc is arranged at the bottom of the cylinder and the fixing holes are arranged on the connecting disc. The blade group adopts the vertical shaft design, can improve the power generation efficiency at low wind speed, can be folded at high wind, effectively avoids the damage of high wind to the blades and improves the safety.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, and in particular to a vertical axis folding wind turbine blade assembly. Background Technology

[0002] Wind power is a clean and renewable energy source with broad application prospects. Traditional wind turbine blades typically employ a horizontal axis design. However, horizontal axis blades are less efficient at low wind speeds and prone to overspeeding in high winds, thus reducing power generation efficiency and safety. For example, traditional wind turbine blades are highly susceptible to damage in extreme weather conditions such as gale-force winds (above level 9) or strong winds. This damage can range from affecting normal power generation or even causing shutdowns to complete destruction of the entire blade assembly, resulting in severe economic losses. Furthermore, the blades of traditional wind turbines generally have a large frontal area, inevitably generating significant wind resistance. Coupled with a lack of effective protection at high wind speeds, wind turbine blades are highly susceptible to damage.

[0003] Therefore, how to solve the problem of reduced wind-receiving area of ​​existing wind turbine blades under high wind speeds has become a difficult issue that urgently needs to be addressed by those skilled in the art. Summary of the Invention

[0004] To address at least one of the aforementioned problems, this invention provides a vertical-axis folding wind turbine blade assembly. This blade assembly employs a vertical axis design, which improves power generation efficiency at low wind speeds and allows for folding during high winds, effectively preventing damage to the blades and avoiding the overspeed phenomenon observed in horizontal-axis wind turbine blades, thus enhancing safety. Furthermore, it features a simple structure, low cost, and broad application prospects.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: A vertical axis folding wind turbine blade assembly includes ribs, blades, telescopic mechanisms, a power system, a cylindrical column, and a connecting plate. The ribs consist of at least three sets, each composed of two corresponding solid plates with a pre-reserved cavity between them. The vertical sides of the ribs are fixedly connected to the wall of the cylindrical column. The blades are folding, consisting of at least three sets, and can be folded within the cavities of the ribs. The telescopic mechanisms consist of at least six sets, located at the upper and lower ends of the blades. The power system is located at the upper end of the cylindrical column, communicates with the telescopic mechanisms, and drives the blades to perform telescopic and folding actions. The cylindrical column is a hollow tube, located at the center of the ribs, and the connecting plate is located at the bottom of the cylindrical column, with fixing holes on the connecting plate.

[0006] Preferably, the height of the rib is greater than or equal to the height of the blade.

[0007] Preferably, the blade includes a blade plate, a slide rod, a shaft, and a slide block; the slide block is disposed on the top of the slide rod, and the blade plate is rotatably connected to the slide rod and the shaft.

[0008] Preferably, the telescopic mechanism includes a telescopic rod, a connecting piece, a slide rail, and a telescopic box; the telescopic rod is bolted to the connecting piece, and the telescopic rod is disposed inside the telescopic box and extends and retracts synchronously with the telescopic box.

[0009] Preferably, the slide block is slidably connected to the slide rail.

[0010] Preferably, the power system includes a power pipe that passes through the tube body of the cylinder and communicates with the upper end of the blade and the telescopic mechanism at the lower end of the blade.

[0011] Preferably, the lower end of the cylindrical column is provided with an auxiliary cylinder, the diameter of which is smaller than the diameter of the cylindrical column.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This invention discloses a vertical-axis folding wind turbine blade assembly, comprising ribs, blades, a telescopic mechanism, a power system, a cylindrical column, and a connecting plate. The ribs consist of at least three sets, each composed of two corresponding solid plates with a pre-reserved cavity between them. The vertical sides of the ribs are fixedly connected to the wall of the cylindrical column. The blades are folding, consisting of at least three sets, and can be folded within the cavities of the ribs. The telescopic mechanism consists of at least six sets, located at the upper and lower ends of the blades. The power system is located at the upper end of the cylindrical column, communicating with the telescopic mechanism, and drives the blades to perform telescopic and folding actions. The cylindrical column is a hollow tube, located at the center of the ribs, and the connecting plate is located at the bottom of the cylindrical column, with fixing holes on the connecting plate. This invention employs a vertical-axis design, which effectively improves power generation efficiency at low wind speeds and allows for automatic folding during high winds, avoiding the overspeed phenomenon of horizontal-axis wind turbine blades and improving safety. Furthermore, it has a simple structure, low cost, and broad application prospects. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram showing the overall effect of the invention after folding.

[0015] Figure 2 This is a schematic diagram illustrating the upper structure of the present invention.

[0016] Figure 3 This is a schematic diagram illustrating the lower structure of the present invention.

[0017] Figure 4This is a schematic diagram showing the overall effect of the invention after it has been extended.

[0018] Figure 5 This is a top view of the extended version of the present invention.

[0019] Explanation of reference numerals in the attached figures: Rib 1 Leaf 2 Telescopic mechanism 3 Powertrain 4 Column 5 Connector 6 Leaf plate 21 Slide bar 22 Shaft 23 Smoked 24 Telescopic pole 31 Connector 32 Slide 33 Telescopic box 34 Power tube 41 Power tube 41 Fixing hole 61 Detailed Implementation

[0020] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses or methods consistent with some aspects of this application as detailed in the appended claims.

[0021] The technical solutions of various embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments described in 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.

[0022] like Figure 1As shown, a vertical axis folding wind turbine blade assembly includes ribs 1, blades 2, telescopic mechanisms 3, a power system 4, a cylindrical column 5, and a connecting plate 6. The ribs 1 consist of at least three sets, each composed of two corresponding solid plates with a pre-reserved cavity between them. The vertical sides of the ribs 1 are fixedly connected to the wall of the cylindrical column 5. The blades 2 are folding, consisting of at least three sets, and are folded within the cavities of the ribs 1. The telescopic mechanisms 3 consist of at least six sets, located at the upper and lower ends of the blades 2. The power system 4 is located at the upper end of the cylindrical column 5, communicates with the telescopic mechanisms 3, and is driven by the telescopic mechanisms 3 to perform telescopic and folding actions on the blades 2. The cylindrical column 5 is a hollow tube, located at the center of the ribs 1, and the connecting plate 6 is located at the bottom of the cylindrical column 5, with fixing holes 61 on the connecting plate 6.

[0023] pass Figures 1-2 Figures 4-5 It is understood that the rib plate 1 has no fewer than three sets, and the number of sets can be either even or odd; the rib plate 1 is preferably a solid plate, and each set of the rib plate 1 consists of two pieces, with a cavity reserved between the two pieces of the rib plate 1; the vertical side of the rib plate 1 is fixedly connected to the vertical wall of the cylinder column 5, preferably by welding, but also by bolting; the blade 2 is a transversely folding type, and there are no fewer than three sets, the number of which is the same as the number of sets of the rib plate 1. The blade can be folded into the cavity of the rib plate 1; there are no fewer than six telescopic mechanisms 3, which are respectively arranged at the upper end and the lower end of the blade 2; the power system 4 is preferably pneumatic or hydraulic, and the power system 4 is fixedly arranged at the upper end of the cylinder 5 and connected to the telescopic mechanism 3, and the telescopic mechanism 3 drives the blade 2 to perform telescopic and folding actions; the cylinder 5 is a hollow tube with the same diameter at the top and bottom, and is arranged at the center of the rib plate 1. The connecting plate 6 is arranged at the bottom of the cylinder 5. The connecting plate 6 is preferably circular and is provided with a fixing hole 61. The fixing hole 61 is used to fix the vertical axis folding wind turbine blade assembly of the present invention.

[0024] In a preferred embodiment of the present invention, such as Figure 1 , Figure 4 As shown, the height of the rib plate 1 is greater than or equal to the height of the blade 2. The advantage of this arrangement is that when there are strong winds or gales of force 9 or above, the blade 2 can be folded into the internal cavity of the rib plate 1, effectively avoiding damage to the blade caused by strong winds.

[0025] In another preferred embodiment of the invention, by Figures 1-3It is known that the blade 2 includes a blade plate 21, a sliding rod 22, a shaft 23, and a sliding disc 24; the sliding disc 24 is disposed on the top of the sliding rod 22, and the blade plate 21 is rotatably connected to the sliding rod 22 and the shaft 23.

[0026] It is understood that the blade 2 comprises four parts: the blade plate 21, the slide rod 22, the shaft 23, and the slide disc 24. The slide disc 24 is a three-dimensional circular disc shape, with a bead provided on the lower outer edge of the slide disc 24 to facilitate sliding. The slide disc 24 is located on the top of the slide rod 22, and a screw is provided at the bottom center of the slide disc 24, while a nut is provided at the top opening of the slide rod 22. The screw and the nut are fastened together. The height of the slide rod 22 is higher than the height of the shaft 23. The blade plate 21 is rotatably connected to the slide rod 22 and the shaft 23. The connection method is preferably a hinge rotation method, but other rotation methods are also possible. The present invention does not limit the rotation method.

[0027] In another preferred embodiment of the present invention, the telescopic mechanism 3 includes a telescopic rod 31, a connector 32, a slide rail 33, and a telescopic box 34; the telescopic rod 31 is bolted to the connector 32, and the telescopic rod 31 is disposed inside the telescopic box 34 and extends and retracts synchronously with the telescopic box 34.

[0028] like Figures 2-4 As shown, the telescopic mechanism 3 includes four parts: the telescopic rod 31, the connector 32, the slide rail 33, and the telescopic box 34. The telescopic rod 31 is a multi-section telescopic rod, and the telescopic box 34 is a multi-section telescopic box. The telescopic rod 31 is located inside the telescopic box 34 and extends and retracts synchronously with the telescopic box 34. The connector 32 is provided at the end of the telescopic rod 31, and the connector 32 is fixedly connected to the outermost slide plate 24 of the blade 2 by bolts.

[0029] In another preferred embodiment of the present invention, the slide 24 is slidably connected to the slide 33; like Figure 2 As shown, the slide 33 is fixedly installed at the upper end of the cylinder 5 and extends outward, and has a certain load-bearing capacity; the slide 33 is an inner groove slide composed of two angle steels facing each other, and there is a gap in the middle of the groove slide. The slide block 24 and the slide rod 22 slide along the gap of the slide 33 to retract or expand the blade 21.

[0030] In another preferred embodiment of the present invention, the power system 4 includes a power pipe 41, which passes through the tube body of the cylinder 5 and communicates with the upper end of the blade 2 and the telescopic mechanism 3 at the lower end of the blade 2; as Figure 2 , Figure 3It is known that the power system 4 includes multiple power pipes 41, which are connected to the telescopic mechanism 3. The power pipes 41 pass through the tube body of the cylinder 5 and are connected to the upper end of the blade 2 and the telescopic mechanism 3 at the lower end of the blade 2. With this configuration, only one set of the power system 4 is needed to drive the blades of the entire blade group to achieve telescopic drive. The execution commands of the power system 4 and the telescopic mechanism 3 come from the signal control system outside the blade group.

[0031] In another preferred embodiment of the present invention, the lower end of the cylindrical column 5 is provided with the auxiliary cylinder 51, the diameter of the auxiliary cylinder 51 being smaller than the diameter of the cylindrical column 5; by Figure 3 It is known that the lower end of the cylindrical column 5 is fixedly provided with the auxiliary cylinder 51. The cylindrical column 5 and the auxiliary cylinder 51 are preferably welded together. The diameter of the auxiliary cylinder 51 is smaller than the diameter of the cylindrical column 5. The central axis of the auxiliary cylinder 51 is coaxial with the central axis of the cylindrical column 5. This arrangement provides space for the telescopic system.

[0032] In this invention, the terms "upper end" and "above" should be understood to include the upper part or top, and "lower end" and "below" should be understood to include the lower part or bottom. Moreover, the terms "upper end" and "lower end" only indicate relative arrangement with respect to the accompanying drawings.

[0033] The specific embodiments of the present invention have been described in detail above, but they are only examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions to this invention are also within the scope of the present invention. Therefore, all equivalent changes and modifications made without departing from the spirit and scope of the present invention should be covered within the scope of the present invention.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects. The scope of the invention is defined by the appended claims, not by the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vertical axis folding wind turbine blade assembly, comprising a rib (1), blades (2), a telescopic mechanism (3), a power system (4), a cylinder (5), and a connecting plate (6), characterized in that: The ribs (1) are not less than three sets, and are composed of a cavity reserved between two corresponding solid plates; The vertical side of the rib (1) is fixedly connected to the cylinder wall of the cylinder column (5); The blade (2) is foldable, with no less than three sets, and can be folded into the cavity of the rib (1). The blade (2) includes a blade plate (21), a slide rod (22), a shaft rod (23), and a slide block (24). The slide block (24) is disposed on the top of the slide rod (22). The blade plate (21) is rotatably connected to the slide rod (22) and the shaft rod (23). The telescopic mechanism (3) consists of no fewer than six sets, which are arranged at the upper end and the lower end of the blade (2). The telescopic mechanism (3) includes a telescopic rod (31), a connector (32), a slide rail (33), and a telescopic box (34). The telescopic rod (31) is bolted to the connector (32). The telescopic rod (31) is arranged inside the telescopic box (34) and telescopically extends and retracts synchronously with the telescopic box (34). The slide (24) is slidably connected to the slide (33); The power system (4) is located at the upper end of the cylinder (5) and is connected to the telescopic mechanism (3). The telescopic mechanism (3) drives the blade (2) to perform telescopic and folding actions. The power system (4) includes a power pipe (41). The power pipe (41) passes through the tube body of the cylinder (5) and is connected to the upper end of the blade (2) and the telescopic mechanism (3) at the lower end of the blade (2). The cylindrical column (5) is a hollow tube and is located at the center of the rib plate (1). The connecting plate (6) is provided at the bottom of the cylindrical column (5) and the connecting plate (6) is provided with a fixing hole (61).

2. The vertical axis folding wind turbine blade assembly according to claim 1, characterized in that, The height of the rib (1) is greater than or equal to the height of the blade (2).

3. The vertical axis folding wind turbine blade assembly according to claim 1, characterized in that, The lower end of the cylindrical column (5) is provided with an auxiliary cylinder (51), the diameter of which is smaller than the diameter of the cylindrical column (5).

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