Segmented fan blade and method of transporting same

Abstract

The application provides a segmented fan blade and a transportation method thereof, comprising a blade root, the blade root is provided with a framework, the framework is provided with a plurality of blade segments, the blade segments are connected with the framework through mounting pieces, the blade root is used for connecting a wind turbine hub, a soft pad is arranged at the connecting position of adjacent blade segments, the blade segments are in a cylindrical shape, and the framework penetrates through the blade segments. The segmented fan blade does not need to use large transportation equipment during transportation, does not need to change a road environment during land transportation, has higher transportation efficiency, is less affected by the environment, and has lower transportation cost; the fan blade framework and the blade are produced and processed in a segmented mode, the processing mode is simple, large molds are not needed, and therefore the processing cost is greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the fan blade technical field, specifically relates to a segmented fan blade and a transportation method thereof. BACKGROUND

[0002] The fan blade is one of the core components of the wind turbine, and accounts for about 15%-20% of the total cost of the fan, and the design of the fan blade will directly affect the performance and benefits of the fan.

[0003] In the production process of the fan blade, in order to ensure its performance, the fan blade is generally formed in an integral manner, that is, a large mold is first processed according to the design requirements, then the fan blade is formed through the mold, and finally the fan blade is transported to the site in an integral manner. In this process, a large mold is used for processing, and the processing cost is high. Large transportation equipment is also required during the transportation of the fan, and the transportation cost is also high. SUMMARY

[0004] The main purpose of the present application is to provide a segmented fan blade and a transportation method thereof, which solves the problem of high processing cost and transportation cost of the existing fan blade.

[0005] To solve the above technical problems, the technical scheme adopted by the present application is:

[0006] A segmented fan blade comprises a blade root, the blade root is provided with a framework, and the framework is provided with a plurality of blade segments.

[0007] The blade segment and the framework are connected through a mounting piece.

[0008] The blade root is used for connecting a wind turbine hub.

[0009] In the preferred scheme, a soft pad is arranged at the connection position of adjacent blade segments.

[0010] The blade segment is in a cylindrical shape, and the framework penetrates through the blade segment.

[0011] In the preferred scheme, the framework comprises a plurality of keels, the cross section of the keel is H-shaped, and one end of the keel is fixedly connected with the blade root.

[0012] The mounting piece is connected with the keel.

[0013] A plurality of first connecting plates are arranged between adjacent keels, the first connecting plate is provided with a vertical plate, and the vertical plate is provided with a support plate.

[0014] Cables are connected between the support plates in the same row along the length direction of the keel.

[0015] In the preferred scheme, a plurality of keels are combined into a large keel, a plurality of large keels are arranged side by side, and one end of the large keel is fixedly connected with the blade root.

[0016] The connecting pieces connect adjacent keels of the same large keel;

[0017] The connecting piece comprises a second connecting plate connected with the keel, the second connecting plate is located at the end of the keel, and the top surface of the second connecting plate is in the same plane as the top surface of the first connecting plate;

[0018] The second connecting plate is connected between two keels of adjacent large keels;

[0019] The second connecting plate is provided with a fixing plate, and the two adjacent fixing plates are in close contact with each other;

[0020] One side of one of the two fixing plates in close contact is provided with a plurality of positioning holes, nuts are arranged in the positioning holes, one side of the other fixing plate is provided with a plurality of rotating blocks, one side of the rotating block is provided with an inner hexagonal hole, the other side of the rotating block is provided with a connecting rod, the connecting rod extends into the other fixing plate from the fixing plate, the connecting rod is provided with a threaded rod, the threaded rod passes through the nut, and the threaded rod is in threaded connection with the nut;

[0021] The second connecting plate is provided with a positioning rod;

[0022] A cable is arranged between the fixing plate and the supporting plate;

[0023] The cable is in a straightened state.

[0024] In the preferred scheme, the mounting piece comprises a connecting buckle connected with the keel, the connecting buckle is provided with a connecting block away from the keel, and the connecting block is connected with the blade segment through a connecting frame;

[0025] The connecting blocks connected with the same blade segment are provided with a fixing rod, and a movable rod is slidably connected in the fixing rod;

[0026] The side surface of the keel is provided with a positioning groove, a positioning block is slidably connected in the positioning groove, and the positioning block extends into the connecting buckle;

[0027] One side of the positioning block away from the keel is provided with a guide seat, and the guide seat extends into the connecting block;

[0028] The movable rod is provided with a guide block, the guide block is in close contact with the guide seat, and the contact surface of the guide block and the guide seat is an inclined surface;

[0029] The guide seat is provided with a guide groove, the guide block is provided with a guide rail, the guide rail is matched with the guide groove, and the cross section of the guide rail is T-shaped;

[0030] The end of the fixing rod is threadedly connected with a threaded column, one end of the threaded column is provided with a pad, the pad abuts against the movable rod, and the other end of the threaded column is provided with a knob;

[0031] The blade segment of the head is provided with an operation hole.

[0032] In the preferred solution, the connecting frame comprises a support frame arranged in the blade segment, the support frame being provided with a support rod, the support rod being connected with the connecting block;

[0033] The connecting block is provided with a fixing block, and the end of the support rod is provided with a connecting slot, the fixing block being matched with the connecting slot;

[0034] The fixing block and the support rod are connected through a pin bolt.

[0035] In the preferred solution, the plurality of connecting buckles are slidingly connected to the two sides of the keel;

[0036] When the connecting buckle slides along the keel, the connecting buckle will not touch the first connecting plate, the second connecting plate, the fixing plate, the vertical plate, the support plate and the cable.

[0037] A transportation method of a segmented fan blade, comprising the following steps:

[0038] S1, according to the drawings of the fan blade, processing the skeleton and the blade to form a segmented skeleton and blade;

[0039] S2, transporting the segmented skeleton and blade to the land work site through the transport vehicle;

[0040] Or

[0041] Transporting the segmented skeleton and blade to the coast through the transport vehicle;

[0042] S3, assembling the skeleton and the blade to form a complete fan blade;

[0043] Or

[0044] Assembling the skeleton and the blade to form a complete fan blade on the transport ship, and transporting the fan blade to the sea work site through the transport ship;

[0045] S4, installing the fan blade.

[0046] In the preferred solution, in S1, the skeleton processing process comprises:

[0047] S111, arranging the keels of one segment of the skeleton side by side according to the drawings;

[0048] S112, welding the connecting plate between the keels;

[0049] S113, welding the plate body for supporting and reinforcing on both sides of the connecting plate;

[0050] A plurality of through holes are arranged in the plate body located at the edge of the keel;

[0051] S114, welding the cable between the plate bodies;

[0052] S115, repeating S111-S114 until all segments of the skeleton are processed.

[0053] The skeleton is processed through the above steps, wherein the end of the skeleton connected with the hub of the wind turbine is welded with the blade root of the wind turbine blade;

[0054] The blade processing process comprises:

[0055] S121, designing a mold according to the drawing;

[0056] S122, processing the segmented blade through the mold;

[0057] S123, completing the processing to obtain the blade of all segments;

[0058] S124, welding the connecting piece connected with the skeleton in the blade.

[0059] In the preferred scheme, in S3, the assembling process comprises:

[0060] S31, connecting the blade segment close to the blade root of the wind turbine to the skeleton through the connecting piece;

[0061] S32, connecting the next segment of the skeleton to the previous segment of the skeleton;

[0062] S33, connecting the next segment of the blade to the skeleton through the connecting piece;

[0063] S34, repeating S32-S33 until the assembling is completed;

[0064] At the connecting position of the skeleton and the skeleton, the plate body at the end of the skeleton is connected through a bolt and a nut, and the bolt passes through the reserved through hole.

[0065] The application provides a segmented wind turbine blade and a transportation method thereof.

[0066] 1. The large transportation equipment is not needed during transportation, the road environment does not need to be changed during land transportation, the transportation efficiency is higher, the influence of the environment is smaller, and the transportation cost is lower.

[0067] 2. The segmented wind turbine blade skeleton and the blade are produced and processed in a segmented manner, the processing manner is simple, the large mold is not needed, and thus the processing cost is greatly reduced.

[0068] 3. The operation is simple during assembling, the connection is convenient, and the assembling efficiency is increased.

[0069] 4. The maintenance and replacement can be performed in segments, and the damaged part can be replaced only, so that the replacement cost is reduced.

[0070] 5、Work in the process, the rotating torque is transmitted through the skeleton, rather than through the blade transmission, so the blade segment processing requirements can be reduced, so that the processing cost of the blade is reduced, the design difficulty is reduced, and the use demand of extreme climate can be met. BRIEF DESCRIPTION OF DRAWINGS

[0071] The application will be further described below in conjunction with the drawings and examples:

[0072] Figure 1 is a sectional fan blade structure diagram of the application;

[0073] Figure 2 is a sectional fan blade structure diagram of the application;

[0074] Figure 3 is a skeleton structure diagram of the application;

[0075] Figure 4 is Figure 2 the enlarged structure diagram of the left end in figure 2;

[0076] Figure 5 is Figure 3 the enlarged structure diagram of the left end in figure 2;

[0077] Figure 6 is a connecting piece structure diagram of the application;

[0078] Figure 7 is a sectional view structure diagram of the connecting piece of the application;

[0079] Figure 8 is a sectional view structure diagram of the connecting piece of the application;

[0080] Figure 9 is a sectional view structure diagram of the connecting piece of the application;

[0081] Figure 10 is a sectional view structure diagram of the connecting piece of the application;

[0082] Figure 11 is a sectional view structure diagram of the connecting piece of the application;

[0083] Figure 12 is a sectional view structure diagram of the connecting piece of the application;

[0084] Figure 13 is a sectional fan blade head connection structure diagram of the application.

[0085] In the figure:

[0086] Blade root 1, skeleton 2, keel 201, first connecting plate 202, connecting piece 203, second connecting plate 231, fixing plate 232, positioning hole 233, nut 234, threaded rod 235, connecting rod 236, rotating block 237, inner hexagonal hole 238, positioning rod 239, vertical plate 204, support plate 205, cable 206, blade segment 3, soft pad 301, operation hole 302, mounting piece 4, connecting buckle 401, connecting block 402, fixing rod 403, positioning groove 404, positioning block 405, guide seat 406, movable rod 407, guide block 408, guide rail 409, threaded column 410, pad 411, knob 412, fixing block 421, pin bolt 422, connecting frame 5, support frame 501, support rod 502. DETAILED DESCRIPTION

[0087] Embodiment 1

[0088] As shown in Figure 1 , 2 and 3, a segmented fan blade, comprising a blade root 1, the blade root 1 is provided with a skeleton 2, the skeleton 2 is provided with a plurality of blade segments 3; the blade root 1, the skeleton 2 and the blade segment 3 are combined to form a curved needle fixed fan blade.

[0089] The blade segment 3 is connected with the skeleton 2 through a mounting piece 4; the material of the skeleton 2 and the mounting piece 4 is preferably 6082-T6 high-strength aluminum alloy.

[0090] The blade root 1 is used for connecting an existing wind turbine hub, and the connecting structure of the blade root 1 and the wind turbine hub adopts the structure of the existing fan blade and the wind turbine hub.

[0091] The fan blade is designed in a segmented manner, so that a large mold is not needed in the processing process, but only a small mold is needed to complete the processing of the fan, which is not only more efficient, but also saves costs, especially as the size of the blade in the prior art becomes larger and larger, the cost of processing by using a large mold increases exponentially, and the application can greatly reduce the processing cost;

[0092] And in the working process of the fan blade of the application, the torque of rotation is transmitted through the skeleton 2 instead of the blade segment 3, so that the processing requirement of the blade segment 3 can be reduced, and the blade segment 3 mainly considers the wind pressure, so that the processing cost of the blade is reduced, and the design difficulty is reduced.

[0093] In the preferred scheme, as shown in Figure 12 , a soft pad 301 is arranged at the connecting position of adjacent blade segments 3, and the soft pad 301 is preferably a sealing gasket;

[0094] The blade segment 3 is cylindrical, the framework 2 passes through the blade segment 3, and the specific shape of the blade segment 3 is determined according to the external shape of the corresponding segment of the actual fan blade, that is, the blade segments 3 of the present application are combined into a complete blade surface; after combination, the connecting portions of the blade segments 3 are in close contact and are sealed by sealing pads, and meanwhile, the existing sealing methods, such as surface smearing of glass fiber material, are supplemented.

[0095] In further embodiments, as shown in Figure 2 、 3 , 4 and 5, the framework 2 comprises a plurality of keels 201, the cross section of the keel 201 is H-shaped, the keel 201 is preferably H-shaped steel or I-shaped steel, one end of the keel 201 is fixedly connected with the blade root 1, preferably by welding, and the keel 201 is connected with the wind turbine hub through the blade root 1.

[0096] The mounting member 4 is connected with the keel 201;

[0097] A plurality of first connecting plates 202 are arranged between adjacent keels 201, the adjacent keels 201 are connected through the first connecting plates 202, and each keel 201 supports each other to ensure the stability of the connection;

[0098] The first connecting plate 202 is provided with a vertical plate 204, and the vertical plate 204 is provided with a support plate 205;

[0099] The support plates 205 in the same row along the length direction of the keel 201 are connected with a cable 206, that is, as shown in Figure 4 、 5 and 8, the vertical plane where the cable 206 is located is parallel to the vertical plane where the keel 201 is located, and the connection and movement of the mounting member 4 are not affected in the process of connecting the blade segment 3 and the keel 201;

[0100] The support plate 205 is pulled by the cable 206, which can achieve the fixing effect while reducing the weight, and ensure the stability of the whole framework 2; the function of the cable 206 can be referred to the cable-stayed bridge, and the keel 201 is equivalent to the bridge deck.

[0101] The length of the keel 201, the size of the vertical plate 204 and the size of the support plate 205 are determined according to the actual size of the fan blade, for example, Figure 5 , the support plate 205 located at the edge is shorter than the support plate 205 located in the middle, and for example, Figure 3 , the lengths of different keels 201 are different.

[0102] Embodiment 2:

[0103] For example, Figure 2 、 3, 4, 5, 6 and 7, a plurality of keels 201 are combined into a large keel, a plurality of large keels are arranged side by side, and one end of the large keel is fixedly connected with the blade root 1; the number of keels 201 required by each large keel is determined according to the actual size of the fan blade, such as Figure 3 the combination shown in

[0104] The adjacent keels 201 of the same large keel are connected through the connecting piece 203 for connecting the skeletons of different sections;

[0105] The connecting piece 203 comprises a second connecting plate 231 connected with the keel 201, the second connecting plate 231 is located at the end of the keel 201, and the top surface of the second connecting plate 231 is in the same plane as the top surface of the first connecting plate 202;

[0106] The second connecting plate 231 is connected between two keels 201 of adjacent large keels, the second connecting plate 231 plays a role in connecting the keels 201 and also serves to butt joint the keels 201, as shown in Figure 4 and 5 ;

[0107] The second connecting plate 231 is provided with a fixing plate 232, and the two adjacent fixing plates 232 are attached to each other to facilitate the connection and fixation of the keels 201;

[0108] One side of one of the two attached fixing plates 232 is provided with a plurality of positioning holes 233, the positioning holes 233 are provided with nuts 234, the positioning holes 233 are matched with the nuts 234, one side of the other fixing plate 232 is provided with a plurality of rotating blocks 237, one side of the rotating block 237 is provided with an internal hexagonal hole 238, the other side of the rotating block 237 is provided with a connecting rod 236, the connecting rod 236 extends into the other fixing plate 232 from the fixing plate 232, the connecting rod 236 is provided with a threaded rod 235, the threaded rod 235 passes through the nut 234, and the threaded rod 235 is threadedly connected with the nut 234;

[0109] The fixing plate 232 is provided with a through hole for the connecting rod 236 and the threaded rod 235 to pass through, and the size of the through hole is matched with the connecting rod 236;

[0110] The second connecting plate 231 is provided with a positioning rod 239; in the two butt-jointed second connecting plates 231, one of the second connecting plates 231 is fixedly connected with the positioning rod 239, and the other second connecting plate 231 is provided with a hole matched with the positioning rod 239;

[0111] The fixing plate 232 and the supporting plate 205 are provided with a cable 206 in a straightened state to ensure the stability of the connection.

[0112] In use, the large keel is divided into different keel segments 201, different keel segments 201 of the same segment are connected and fixed by the first connecting plate 202 and the second connecting plate 231, different combinations are formed into a keel segment, and then different keel segments are connected. When connecting, the positioning rod 239 is inserted into the hole in the connecting position, and then the connected keel segment is moved until the corresponding keel 201 is in contact, and then the nut 234 is placed in the positioning hole 233 and the connecting rod 236 and the threaded rod 235 are inserted into the through hole. When the threaded rod 235 abuts against the nut 234, a hexagonal wrench is inserted into the internal hexagonal hole 238 and rotated until the nut 234 is tightened on the threaded rod 235. After all the connections are completed, as shown in Figure 6 , the connection of the keel segment is completed. In this way, the connection of the keel 2 is completed. The operation is simple, convenient to connect, and firm in connection.

[0113] The keel 2 is designed in a segmented manner, and the blade is also designed in a segmented manner. Large transportation tools are no longer needed during transportation, and the road surface does not need to be modified, thereby reducing transportation costs and increasing transportation convenience.

[0114] Example 3

[0115] As shown in Figure 4 , 8 , 9, 10, 11 and 13, the mounting member 4 includes a connecting buckle 401 connected with the keel 201. The side of the connecting buckle 401 away from the keel 201 is provided with a connecting block 402, and the connecting block 402 is connected with the blade segment 3 through the connecting frame 5.

[0116] The shape of the connecting buckle 401 can be as shown in Figure 4 and 10 . The keel 201 is designed in an H shape, so that the connecting buckle 401 can be connected on both sides of the keel 201 to ensure stable and convenient connection.

[0117] In the present application, which keel 201 the connecting buckle 401 is connected with is determined according to actual conditions, such as Figure 8 , the keels 201 are connected at intervals, or each keel 201 is connected, or only one keel 201 is connected. The specific connection is determined according to actual conditions.

[0118] The connecting blocks 402 connected with the same blade segment 3 are provided with a fixing rod 403, and the fixing rod 403 is slidably connected with a movable rod 407.

[0119] The side of the keel 201 is provided with a plurality of positioning grooves 404, the bottom of the positioning groove 404 is provided with a taper surface to facilitate positioning during connection, the positioning groove 404 is slidably connected with a positioning block 405, the positioning block 405 is matched with the positioning groove 404, and the positioning block 405 extends into the connecting buckle 401;

[0120] The side, away from the keel 201, of the positioning block 405 is provided with a guide seat 406, and the guide seat 406 extends into the connecting block 402; Figure 11 In the embodiment, the guide seat 406 and the positioning block 405 are only connected with the connecting buckle 401 in an up-and-down sliding mode, that is, the holes, provided in the connecting buckle 401 and used for the movement of the guide seat 406 and the positioning block 405, can only enable the guide seat 406 and the positioning block 405 to slide up and down;

[0121] The movable rod 407 is provided with a guide block 408, the guide block 408 is in close contact with the guide seat 406, and the contact surface of the guide block 408 and the guide seat 406 is a slope surface;

[0122] The guide seat 406 is provided with a guide groove, the guide block 408 is provided with a guide rail 409, the guide rail 409 is matched with the guide groove, the guide groove and the guide rail 409 are arranged along the slope surface, and the guide rail 409 has a T-shaped cross section; thus, in the sliding process of the guide block 408, the guide block 408 can drive the guide seat 406 to move through the guide groove and the guide rail 409; and since the guide seat 406 and the positioning block 405 can only slide, in the sliding process of the guide block 408, the guide seat 406 and the positioning block 405 are driven to slide, that is, to enter or move away from the positioning groove 404, by the guide groove and the guide rail 409;

[0123] The end of the fixed rod 403 is threadedly connected with a threaded column 410, one end of the threaded column 410 is provided with a pad 411, the pad 411 abuts against the movable rod 407, and the other end of the threaded column 410 is provided with a knob 412.

[0124] When the blade segment 3 is installed, the corresponding connecting buckle 401 is aligned with the corresponding keel 201 and then slid inward, so that the connecting buckle 401 is connected to the keel 201 and slides along the keel, after sliding to a specified position, the blade segment 3 reaches a predetermined position, then the knob 412 is rotated to drive the threaded column 410 to rotate, so that the threaded column 410 moves into the fixed rod 403, that is, the movable rod 407 is pushed, so that the guide block 408 is driven to move, that is, the guide seat 406 and the positioning block 405 are driven to move, the positioning block 405 enters the inside of the positioning groove 404, and the connection is completed; conversely, the blade segment 3 can be disassembled, the operation is simple, and the blade segment 3 is convenient to connect and disassemble, that is, the fan blade is convenient to assemble and replace.

[0125] And a plurality of connecting buckles 401 are connected to the same blade segment 3, as shown in the figure, Figure 9 The connecting buckle 401 on the same keel 201 only needs to be twisted at one place to complete the connection, so that the connection efficiency is higher.

[0126] The inner part of the knob 412 is preferably provided with an inner hexagonal hole. When the blade segment 3 of the head is connected, the blade segment 3 of the head is provided with an operation hole 302. A hexagonal wrench is used to pass through the operation hole 302 and enter the inner hexagonal hole, and then the knob is twisted to complete the installation and disassembly operation.

[0127] In further embodiments, as shown in Figure 10 and 11 , the connecting frame 5 includes a support frame 501 provided in the blade segment 3. The support frame 501 is provided with a support rod 502 connected with the connecting block 402. The support frame 501 is arranged in the inner part of the blade segment 3 for internal fixation and support of the blade segment 3. The material of the support frame 501 is preferably 6082-T6 high-strength aluminum alloy. The specific shape of the support frame 501 is determined according to the internal shape of the corresponding blade segment 3.

[0128] The connecting block 402 is provided with a fixing block 421, and the end of the support rod 502 is provided with a connecting groove. The fixing block 421 is matched with the connecting groove.

[0129] The fixing block 421 and the support rod 502 are connected by a pin bolt 422.

[0130] In use, the mounting part 4 and the connecting frame 5 can be processed separately as needed, thereby reducing the processing difficulty. After processing is completed, the fixing block 421 is inserted into the inner part of the connecting groove, and then the pin bolt 422 is used for connection to complete the connection and fixation, which is simple to operate and convenient to connect. The fixing block 421 and the support rod 502 are provided with a pin hole and a threaded hole corresponding to the connecting pin bolt 422. The specific structure can be as shown in Figure 11 .

[0131] In the above embodiments, it is necessary to ensure that the connecting buckle 401 does not touch the first connecting plate 202, the second connecting plate 231, the fixed plate 232, the vertical plate 204, the support plate 205 and the cable 206 when the connecting buckle 401 slides along the keel 201. For reference, Figure 8 , the sliding of the connecting buckle 401, the connecting block 402, the support rod 502 and the support frame 501 is affected.

[0132] Embodiment 4:

[0133] A transportation method of a segmented fan blade, comprising the following steps:

[0134] S1, according to the drawings of the fan blade, process the framework and the blade to form a segmented framework and blade;

[0135] S2, transport the segmented framework and blade to a land work site by a transport vehicle;

[0136] or

[0137] Transport the segmented skeleton and blade to the coast by a transport vehicle;

[0138] S3, assemble the skeleton and blade to form a complete wind turbine blade;

[0139] Or

[0140] Assemble the skeleton and blade to form a complete wind turbine blade on the transport ship, and transport the wind turbine blade to the offshore work site by the transport ship;

[0141] S4, install the wind turbine blade.

[0142] The present application adopts a segmented wind turbine blade skeleton and blade, so that large transportation equipment is not needed during transportation, and the road environment does not need to be changed during land transportation. Compared with the prior art, which uses large transportation equipment and needs to change the road environment to ensure the transportation mode, the mode of the present application has lower transportation cost, higher transportation efficiency, and is less affected by the environment.

[0143] In the preferred scheme, in S1, the skeleton processing process includes:

[0144] S111, arrange the keels of one segment of the skeleton side by side according to the drawings;

[0145] S112, weld the connecting plates between the keels;

[0146] S113, weld plate bodies for support and reinforcement on both sides of the connecting plates;

[0147] A plurality of through holes are arranged in the plate bodies located at the edges of the keels;

[0148] S114, weld the cables between the plate bodies;

[0149] S115, repeat S111-S114 until the skeleton of all segments is processed;

[0150] The skeleton is processed through the above steps, wherein the end of the skeleton connected with the hub of the wind turbine is welded with a blade root of the wind turbine blade;

[0151] The blade processing process includes:

[0152] S121, design a mold according to the drawings;

[0153] S122, process the segmented blade by the mold;

[0154] S123, process all segments of the blade;

[0155] S124, weld the connecting piece connected with the skeleton in the blade.

[0156] The fan blade framework and the blade are produced and processed in a segmented manner, the processing manner is simple, large molds are not needed, and thus the processing cost is greatly reduced.

[0157] In the preferred scheme, in S3, the combined process comprises:

[0158] S31, connecting the blade segment close to the blade root of the fan blade to the framework through the connecting piece;

[0159] S32, connecting the next segment of the framework to the previous segment of the framework;

[0160] S33, connecting the next segment of the blade to the framework through the connecting piece;

[0161] S34, repeating S32-S33 until the assembly is completed;

[0162] At the connecting position of the framework and the framework, the plate body at the end of the framework is connected through a bolt and a nut, the bolt passes through a reserved through hole

[0163] The segmented fan blade of the application has simple connection, convenient operation, increased assembly convenience, and is convenient for subsequent maintenance and replacement.

[0164] The above embodiment is only a preferred technical solution of the application, and should not be regarded as a limitation of the application, the protection scope of the application should be the technical solution recorded in the claims, including the equivalent replacement scheme of the technical features recorded in the claims as the protection scope. That is, the equivalent replacement improvement within this range is also within the protection scope of the application.

Claims

1. A segmented fan blade, characterized in that: Includes leaf root (1), leaf root (1) has skeleton (2), skeleton (2) has multiple leaf segments (3); Leaf segment (3) is connected to skeleton (2) via mounting component (4); The blade root (1) is used to connect the wind turbine hub; The skeleton (2) includes multiple keels (201), the cross-section of the keel (201) is H-shaped, and one end of the keel (201) is fixedly connected to the leaf root (1); The mounting component (4) is connected to the keel (201); Multiple first connecting plates (202) are provided between adjacent keels (201), the first connecting plates (202) are provided with vertical plates (204), and the vertical plates (204) are provided with support plates (205); Cables (206) are connected between the support plates (205) in the same row along the length of the keel (201). Multiple keels (201) are combined to form a large keel, and multiple large keels are arranged side by side. One end of the large keel is fixedly connected to the leaf root (1). Adjacent keels (201) of the same main keel are connected by connectors (203); The connector (203) includes a second connecting plate (231) connected to the keel (201). The second connecting plate (231) is located at the end of the keel (201), and the top surface of the second connecting plate (231) is in the same plane as the top surface of the first connecting plate (202). The second connecting plate (231) is connected between the two keels (201) of the adjacent large keel; The second connecting plate (231) is provided with a fixing plate (232), and two adjacent fixing plates (232) are fitted together; In the two fitting fixing plates (232), one fixing plate (232) has multiple positioning holes (233) on one side, and a nut (234) is provided in the positioning hole (233). The other fixing plate (232) has multiple rotating blocks (237) on one side, and an internal hexagonal hole (238) is provided on one side of the rotating block (237). A connecting rod (236) is provided on the other side of the rotating block (237). The connecting rod (236) extends from the fixing plate (232) into the other fixing plate (232). The connecting rod (236) has a threaded rod (235). The threaded rod (235) passes through the nut (234) and is threadedly connected to the nut (234). The second connecting plate (231) is provided with a positioning rod (239); A cable (206) is provided between the fixing plate (232) and the support plate (205); The cable (206) is in a taut state.

2. The segmented wind turbine blade according to claim 1, characterized in that: A pad (301) is provided at the connection of adjacent leaf segments (3); Leaf segment (3) is tubular, and skeleton (2) passes through leaf segment (3).

3. The segmented wind turbine blade according to claim 1, characterized in that: The mounting component (4) includes a connecting buckle (401) connected to the keel (201), and a connecting block (402) is provided on the side of the connecting buckle (401) away from the keel (201). The connecting block (402) is connected to the leaf segment (3) through the connecting bracket (5). A fixed rod (403) is provided between the connecting blocks (402) that connect the same leaf segment (3), and a movable rod (407) is slidably connected inside the fixed rod (403). The side of the keel (201) is provided with a positioning groove (404), and a positioning block (405) is slidably connected in the positioning groove (404). The positioning block (405) extends into the connecting buckle (401). The positioning block (405) has a guide seat (406) on the side away from the keel (201), and the guide seat (406) extends into the interior of the connecting block (402); The movable rod (407) is provided with a guide block (408), which is in close contact with the guide seat (406). The contact surface between the guide block (408) and the guide seat (406) is an inclined surface. The guide seat (406) is provided with a guide groove, and the guide block (408) is provided with a guide rail (409). The guide rail (409) is adapted to the guide groove, and the cross section of the guide rail (409) is T-shaped. The end of the fixed rod (403) is threadedly connected to a threaded post (410), one end of the threaded post (410) is provided with a pad (411), the pad (411) abuts against the movable rod (407), and the other end of the threaded post (410) is provided with a knob (412). The leaf segment (3) at the head is provided with an operation hole (302).

4. The segmented wind turbine blade according to claim 3, characterized in that: The connecting frame (5) includes a support frame (501) disposed within the leaf segment (3), the support frame (501) is provided with a support rod (502), and the support rod (502) is connected to the connecting block (402); The connecting block (402) is provided with a fixing block (421), and the end of the support rod (502) is provided with a connecting groove, and the fixing block (421) is adapted to the connecting groove; The fixing block (421) is connected to the support rod (502) by a pin bolt (422).

5. A segmented wind turbine blade according to claim 3, characterized in that: Multiple connecting buckles (401) are slidably connected to both sides of the keel (201); When the connecting buckle (401) slides along the keel (201), the connecting buckle (401) will not touch the first connecting plate (202), the second connecting plate (231), the fixing plate (232), the vertical plate (204), the support plate (205) and the cable (206).

6. A method for transporting segmented wind turbine blades as described in claim 1, characterized in that: Includes the following steps: S1. Process the frame and blades according to the drawings of the wind turbine blades to form a segmented frame and blades; S2. Transport the segmented frame and blades to the land work site using a transport vehicle; or The segmented frame and blades were transported to the coast by transport vehicle; S3. Assemble the frame and blades to form a complete wind turbine blade; or The frame and blades are assembled on the transport ship to form a complete wind turbine blade, which is then transported to the offshore work site by the transport ship. S4. Install the fan blades.

7. The method for transporting segmented wind turbine blades according to claim 6, Its characteristic is that in S1, the skeleton processing includes: S111. Arrange the keel of one section of the skeleton side by side according to the drawings; S112. Weld the connecting plate between the keels; S113. The connecting plate is welded on both sides for support and reinforcement; Multiple through holes are provided inside the plate located at the edge of the keel; S114, Welded cables between plates; S115. Repeat S111-S114 until the skeleton of all segments is processed. The above steps complete the processing of the frame, wherein the wind turbine blade roots are welded to the end of the frame that connects to the wind turbine hub. The blade manufacturing process includes: S121. Design the mold according to the drawings; S122. Segmented blades are processed using molds; S123. Processing completed, all blade segments obtained; S124. Connecting component for welding inside the blade and connecting to the frame.

8. The method for transporting segmented wind turbine blades according to claim 7, characterized in that: In S3, the combination process includes: S31. Connect the blade segment near the root of the wind turbine blade to the frame using a connector; S32. Connect the next segment of the skeleton to the previous segment of the skeleton; S33. Connect the next blade section to the frame using a connector; S34. Repeat S32-S33 until assembly is complete; At the connection between the frames, the plates at the ends of the frames are connected by bolts and nuts, with the bolts passing through pre-drilled holes.

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