Method and system for cutting waste fan blades

Abstract

This invention provides a method and system for cutting waste wind turbine blades, relating to the field of waste wind turbine blade processing technology. The wind turbine blade has a leading edge and a trailing edge, and includes a connected shell and a main beam. The main beam includes a connected first beam cap, a web, and a second beam cap. The shell portion between either the leading edge or the trailing edge and the main beam is defined as the first shell portion. The method includes: removing the first shell portion from the shell to form a first remaining blade; removing a second shell portion from the first remaining blade to obtain a second remaining blade, completely exposing the first beam cap, wherein the second shell portion is the shell portion of the first remaining blade adjacent to the first beam cap; sequentially removing the first beam cap and the web on the main beam of the second remaining blade to form a third remaining blade; and removing the remaining shell portion of the third remaining blade to completely expose the second beam cap. This invention enables orderly cutting of wind turbine blades, with high cutting efficiency and short time consumption, and is suitable for cutting wind turbine blades of various specifications.

Description

Technical Field

[0001] This invention relates to the field of waste wind turbine blade processing technology, and in particular to a method and system for cutting waste wind turbine blades. Background Technology

[0002] Waste wind turbine blades are a new type of solid waste generated by the wind power industry. In the recycling and disposal technology of waste wind turbine blades, physical recycling is the main method with large-scale processing capabilities. It mainly includes processes such as cutting and crushing. Cutting wind turbine blades is the first step in the recycling process, but related technologies face the following problems in cutting waste wind turbine blades:

[0003] 1. The main material of wind turbine blades is generally a composite material of glass fiber and epoxy resin, which has high strength and good mechanical properties. Even after decommissioning, it can maintain good structural quality, so it is difficult to cut.

[0004] 2. The wind turbine blades are large in size and weight, and the cutting requirements are not clearly defined. Moreover, the cutting of wind turbine blades is mainly done manually, and the cutting efficiency is mainly related to the experience of the cutting workers. Therefore, the cutting of wind turbine blades is disordered, inefficient and time-consuming. Summary of the Invention

[0005] The present invention aims to at least partially solve one of the technical problems in the related art.

[0006] Therefore, one embodiment of the present invention proposes a method for cutting waste wind turbine blades. This method can achieve orderly cutting of wind turbine blades, with high cutting efficiency, short time consumption, and is applicable to the cutting of wind turbine blades of various specifications.

[0007] Another embodiment of the present invention provides a waste wind turbine blade cutting system.

[0008] According to an embodiment of the present invention, a method for cutting waste wind turbine blades includes a wind turbine blade having a leading edge and a trailing edge and comprising a connected shell and a main beam. The shell has a blade tip and a blade root, and the main beam includes a connected first beam cap, a web, and a second beam cap. The shell portion between either the leading edge or the trailing edge and the main beam is defined as a first shell portion. The method includes: cutting off the first shell portion in the shell to form a first remaining blade; cutting off a second shell portion from the first remaining blade to obtain a second remaining blade, completely exposing the first beam cap, wherein the second shell portion is the shell portion of the first remaining blade adjacent to the first beam cap; sequentially cutting off the first beam cap and the web on the main beam of the second remaining blade to form a third remaining blade; and cutting off the remaining shell in the third remaining blade to completely expose the second beam cap.

[0009] According to the present invention, the waste wind turbine blade cutting method comprises the following steps: First, cutting the wind turbine blade by removing the shell on either side of the blade located between the main beam and the leading edge or between the main beam and the trailing edge to form a first remaining blade; then, by removing a portion of the shell in the first remaining blade, detaching the connection between the first beam cap and the shell, obtaining a second remaining blade to complete the second step of cutting the wind turbine blade; then, a third step of cutting separates the first beam cap and the web; and a fourth step of cutting separates the remaining shell and the second beam cap in the third remaining blade. This method enables the entire wind turbine blade to be cut and separated according to different parts and materials, ensuring maximum material yield and facilitating subsequent recycling and disposal. It forms an efficient, orderly, and universal cutting scheme, reducing unnecessary cutting processes. Therefore, compared with related technologies, the present invention can achieve orderly cutting of wind turbine blades, with high cutting efficiency, short time consumption, and is applicable to the cutting of wind turbine blades of various specifications.

[0010] In some embodiments, after the step of removing the remaining shell in the third remaining blade to fully expose the second beam cap, the method further includes cutting the second beam cap.

[0011] In some embodiments, after the step of removing the remaining shell in the third remaining blade to fully expose the second beam cap, the method further includes cutting the leaf root.

[0012] In some embodiments, the step of removing the first shell portion of the housing to form the first remaining blade includes:

[0013] On the first shell portion, a plurality of first cutting lines are marked at a first predetermined distance along the extension direction of the wind turbine blades, such that the first cutting lines extend from the end of the first shell portion away from the main beam toward the main beam;

[0014] Cut the first shell portion along the first cutting line, and stop cutting when the main beam is reached;

[0015] At the connection between the first shell and the main beam, the first shell is cut along the direction from the blade tip toward the blade root to a first predetermined position, and the first shell is cut into blade fragments.

[0016] In some embodiments, the first shell portion is a shell portion between the main beam and the trailing edge, and before the step of cutting the first shell portion along the first cutting line and stopping the cutting when the cutting reaches the main beam, the method further includes:

[0017] A second cutting line is marked on the first shell portion, such that the second cutting line is spaced a second predetermined distance from the rear edge and extends along the contour line of the rear edge;

[0018] The first shell portion is cut along the second cutting line to the first set position, separating the first shell portion and the main beam.

[0019] In some embodiments, the second set distance is s, where 5cm≤s≤10cm.

[0020] In some embodiments, the first shell portion is a shell portion between the main beam and the leading edge, and before the step of cutting the first shell portion along the first cutting line and stopping the cutting when the cutting reaches the main beam, the method further includes:

[0021] The first shell portion is cut along the contour line of the leading edge to the first set position, separating the first shell portion and the main beam.

[0022] In some embodiments, the wind turbine blades have a windward side and a leeward side, and the portions of the first shell located on the windward side and the leeward side are cut separately according to the arrangement of the wind turbine blades at the cutting site.

[0023] Alternatively, the portions of the first shell located on both the windward and leeward sides can be cut simultaneously.

[0024] In some embodiments, the step of removing the second shell portion from the first remaining blade to obtain a second remaining blade and completely exposing the first beam cap, wherein the second shell portion is the shell portion of the first remaining blade adjacent to the first beam cap, includes:

[0025] On the second shell, a plurality of third cutting lines are marked at a third predetermined distance along the extension direction of the wind turbine blades, such that the third cutting lines extend from the end of the second shell away from the main beam toward the main beam;

[0026] The second shell portion is cut along the third cutting line, and the cutting stops when the first beam cap is reached;

[0027] At the connection point between the second shell and the first beam cap, the second shell is cut along the direction from the blade tip toward the blade root to a second predetermined position, and the second shell is cut into blade fragments.

[0028] In some embodiments, the step of sequentially removing the first beam cap and the web on the main beam of the second remaining blade to form the third remaining blade includes:

[0029] The first beam cap and the web are separated by cutting along the extension direction of the fan blade at the connection between the first beam cap and the web.

[0030] The first beam cap is cut into multiple segments at a first predetermined length to obtain fragments of the first beam cap. The web is cut into multiple segments at a second predetermined length along the extension direction perpendicular to the wind turbine blade.

[0031] Cut along the extension direction of the wind turbine blade at the connection between the second beam cap and the web to separate the web and the second beam cap, obtaining web fragments.

[0032] In some embodiments, the step of removing the remaining shell in the third remaining blade to fully expose the second beam cap includes:

[0033] On the remaining housing, a plurality of fourth cutting lines are marked at a fourth predetermined distance along the extension direction of the wind turbine blades, such that the fourth cutting lines extend from the end of the remaining housing away from the second beam cap toward the second beam cap;

[0034] The remaining shell is cut along the fourth cutting line, and the cutting stops when the second beam cap is reached;

[0035] At the connection point between the remaining shell and the second beam cap, the remaining shell is cut along the direction from the blade tip toward the blade root to a third predetermined position, and the remaining shell is cut into blade fragments.

[0036] In some embodiments, the step of cutting the second beam cap is to cut the second beam cap into multiple segments of a third predetermined length to obtain fragments of the second beam cap.

[0037] In some embodiments, the step of cutting the leaf root includes:

[0038] Multiple cutting points are marked on the leaf root along the circumference of the leaf root;

[0039] At the cutting point, the leaf root is cut into leaf root fragments along the axial direction of the leaf root.

[0040] According to an embodiment of the present invention, a waste wind turbine blade cutting system is used to implement the cutting method described in any of the above embodiments. The system includes a first shell processing module, a first remaining blade processing module, a second remaining blade processing module, and a third remaining blade processing module. The shell portion between either the leading edge or the trailing edge and the main beam constitutes the first shell.

[0041] The first shell processing module is used to cut off the first shell portion in the shell to form a first remaining blade;

[0042] The first remaining blade processing module is used to cut off the second shell portion from the first remaining blade to obtain the second remaining blade and completely expose the first beam cap, wherein the second shell portion is the shell portion of the first remaining blade adjacent to the first beam cap;

[0043] The second remaining blade processing module is used to sequentially cut off the first beam cap and the web plate on the main beam in the second remaining blade to form a third remaining blade;

[0044] The third remaining blade processing module is used to remove the remaining shell in the third remaining blade, so that the second beam cap is fully exposed.

[0045] The technical advantages of the waste wind turbine blade cutting system according to the present invention are the same as those of the above-described waste wind turbine blade cutting method, and will not be repeated here.

[0046] In some embodiments, the system further includes at least one of a second beam cap processing module and a blade root processing module, wherein the second beam cap processing module and the blade root processing module are located after the third remaining blade processing module, wherein,

[0047] The second beam cap processing module is used to cut the second beam cap;

[0048] The leaf root processing module is used to cut the leaf roots.

[0049] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the wind turbine blades.

[0051] Figure 2 This is a cross-sectional view of the wind turbine blades.

[0052] Figure 3 This is a schematic flowchart of a method for cutting waste wind turbine blades according to an embodiment of the present invention.

[0053] Figure 4 This is a schematic flowchart of a method for cutting waste wind turbine blades according to another embodiment of the present invention.

[0054] Figure 5 This is a schematic diagram of the process of cutting off the first shell portion in the housing to form the first remaining blade in a waste wind turbine blade cutting method according to an embodiment of the present invention.

[0055] Figure 6This is a schematic diagram of the process for cutting a waste wind turbine blade according to another embodiment of the present invention, in which the first shell portion of the casing is removed to form the first remaining blade. Figure 1 .

[0056] Figure 7 This is a schematic diagram of the process for cutting a waste wind turbine blade according to another embodiment of the present invention, in which the first shell portion of the casing is removed to form the first remaining blade. Figure 2 .

[0057] Figure 8 This is a schematic diagram of a waste wind turbine blade cutting system according to an embodiment of the present invention.

[0058] Figure 9 This is a schematic diagram of a waste wind turbine blade cutting system according to another embodiment of the present invention.

[0059] Reference numerals: 1. Leading edge, 2. Trailing edge, 3. Shell, 31. Blade tip, 32. Blade root, 33. First shell section, 331. First cutting line, 332. Second cutting line, 34. Second shell section, 35. Remaining shell, 36. First set position, 4. Main beam, 41. First beam cap, 42. Web plate, 43. Second beam cap, 5. Windward side, 6. Leeward side. Detailed Implementation

[0060] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0061] like Figure 1 and Figure 2 As shown, in the related technology, the wind turbine blade has a leading edge 1 and a trailing edge 2 and includes a connected shell 3 and a main beam 4. The shell 3 has a blade tip 31 and a blade root 32, and the main beam 4 includes a connected first beam cap 41, a web plate 42 and a second beam cap 43.

[0062] like Figures 1 to 3 As shown in the figure, a method for cutting waste wind turbine blades according to an embodiment of the present invention defines the shell portion between either the leading edge 1 or the trailing edge 2 and the main beam 4 as the first shell portion 33. The method includes the following steps:

[0063] Step S1: Remove the first shell portion 33 in the housing 3 to form the first remaining blade, thereby achieving the initial cutting of the wind turbine blade;

[0064] Step S2: The second shell portion 34 is cut out from the first remaining blade to obtain the second remaining blade and the first beam cap 41 is fully exposed. The second shell portion 34 is the shell portion of the first remaining blade adjacent to the first beam cap 41.

[0065] Step S3: Sequentially cut off the first beam cap 41 and web plate 42 on the main beam 4 in the second remaining blade to form the third remaining blade, thereby achieving the cutting and separation of different parts of the main beam 4.

[0066] Step S4: Remove the remaining shell 35 from the third remaining blade to fully expose the second beam cap 43. Separate the remaining shell 35 from the second beam cap 43 to complete the cutting of the entire wind turbine blade according to different parts.

[0067] According to the present invention, the waste wind turbine blade cutting method consists of a first step of cutting the wind turbine blade by removing the shell on either side of the blade located between the main beam 4 and the leading edge 1 or between the main beam 4 and the trailing edge 2, to form a first remaining blade. Then, by removing part of the shell in the first remaining blade, the connection between the first beam cap 41 and the shell is released, resulting in a second remaining blade, thus completing the second step of cutting the wind turbine blade. After that, the first beam cap 41 and the web 42 are separated by a third step of cutting, and the remaining shell 35 and the second beam cap 43 in the third remaining blade are separated by a fourth step of cutting. This method can achieve the cutting and separation of the entire wind turbine blade according to different parts and different materials, ensuring the maximum material yield and facilitating subsequent recycling and disposal. It forms an efficient, orderly, and universal cutting scheme, reducing unnecessary cutting processes. Therefore, compared with related technologies, the present invention can achieve orderly cutting of wind turbine blades, with high cutting efficiency, short time consumption, and is applicable to the cutting of wind turbine blades of various specifications.

[0068] It should be noted that this method for cutting waste wind turbine blades is applicable to both manual cutting and automated equipment cutting.

[0069] like Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments of the present invention, the method for cutting waste wind turbine blades further includes a step after step S4:

[0070] Step S5: Cut the second beam cap 43.

[0071] Step S6: Cut the leaf root 32.

[0072] Understandably, the cutting operations in steps S5 and S6 facilitate the transfer and reprocessing of the second beam cap 43 and blade root 32. Furthermore, depending on the personnel or equipment configuration, steps S5 and S6 can be performed simultaneously to further shorten the cutting cycle of the waste wind turbine blades and improve operational efficiency, or steps S5 and S6 can be performed in stages to match actual operating conditions and complete the wind turbine blade cutting operation.

[0073] Meanwhile, in some embodiments of the present invention, the method for cutting waste wind turbine blades includes steps S1, S2, S3, and S4; in other embodiments, the method includes steps S1, S2, S3, S4, and S5; and in still other embodiments, the method includes steps S1, S2, S3, S4, S5, and S6. It should be noted that in these embodiments, steps S5 and S6 are not limited by any specific order. Therefore, the method for cutting waste wind turbine blades of the present invention can be any of the three methods described above.

[0074] For example, 1. Figure 2 and Figure 5 As shown, in some embodiments, step S1 specifically includes:

[0075] Step S11: Mark multiple first cutting lines 331 on the first shell 33 at a first set distance along the extension direction of the wind turbine blade, so that the first cutting lines 331 extend from the end of the first shell 33 away from the main beam 4 toward the main beam 4, that is, the first cutting lines 331 extend from the front edge 1 or the rear edge 2 toward the main beam 4. The first set distance is the length to which the first shell 33 needs to be cut. The first set distance needs to be specifically determined according to the cutting requirements of the wind turbine blade, so that the shell 3 of the wind turbine blade can be cut and separated according to different sizes to ensure the maximum yield.

[0076] Step S12: Cut the first shell 33 along the first cutting line 331 and stop cutting when it reaches the main beam 4. That is, cut the first shell 33 from the front edge 1 or the rear edge 2 toward the main beam 4 along the first cutting line 331 until it stops cutting at the main beam 4. At the same time, cut along multiple first cutting lines 331 one by one to achieve the division of the first shell 33 along the extension direction of the fan blades.

[0077] In step S13, the first shell 33 is cut from the connection between the first shell 33 and the main beam 4 to the first set position 36 along the direction from the blade tip 31 toward the blade root 32. The first shell 33 is cut into blade fragments. The first set position 36 is at the corresponding position on the left end of the blade root 32 in the figure. That is, when cutting the first shell 33, it is not cut directly from the blade tip 31 to the blade root 32, but the cut ends at a certain position on the left end of the blade root 32, so as to achieve separate cutting of the blade part and the blade root 32 part.

[0078] It is understandable that when the first shell portion 33 is removed, it can be cut at the same time to achieve direct cutting of this part of the shell 3. Compared with the method of first removing the first shell portion 33 from the wind turbine blade and then cutting it, the method in this invention does not need to consider the placement and clamping operations when cutting the first shell portion 33 again. The cutting process is simple and highly operable.

[0079] For example, 1. Figure 2 and Figure 6 As shown, in some embodiments, the first shell portion 33 is the shell portion between the main beam 4 and the trailing edge 2, and before step S12, it further includes:

[0080] Step S11': Mark a second cutting line 332 on the first shell 33, such that the second cutting line 332 is spaced from the trailing edge 2 by a second predetermined distance and extends along the outline of the trailing edge 2. That is, draw a second cutting line 332 on the first shell 33 from the blade tip 31 toward the blade root 32. The second cutting line 332 is parallel to the outline of the trailing edge 2, and the distance from the second cutting line 332 to the trailing edge 2 is the second predetermined distance.

[0081] Step S11”: Cut the first shell part 33 along the second cutting line 332 to the first set position 36 to separate the first shell part 33 and the main beam 4 so that the first shell part 33 can be separated from the leaf root 32 at the first set position 36.

[0082] For example, 1. Figure 2 and Figure 6 As shown, in some embodiments, the second set distance is s, 5cm≤s≤10cm. After the first shell 33 is partially cut off from the second set distance range along the outline of the rear edge 2, the resulting cut surface is easier to cut, thus facilitating subsequent cutting operations of the first shell 33 along the first cutting line 331.

[0083] For example, 1. Figure 2 and Figure 7 As shown, in some embodiments, the first shell portion 33 is the shell portion between the main beam 4 and the leading edge 1, and before step S12, it further includes:

[0084] Step S12': Cut the first shell 33 along the outline of the leading edge 1 to the first set position 36 to separate the first shell 33 and the main beam 4.

[0085] It is understood that in some embodiments of the present invention, step S1 specifically includes steps S11, S12, and S13; in other embodiments, step S1 specifically includes steps S11, S11', S11", S12, and S13, or step S1 specifically includes steps S11, S12', S12, and S13. Therefore, step S1 of the present invention can be either of the two methods described above.

[0086] like Figure 2 As shown, in some embodiments, the wind turbine blades have a windward side 5 and a leeward side 6. Depending on the placement of the wind turbine blades at the cutting site, the portions of the first shell 33 located on the windward side 5 and the leeward side 6 are cut separately, so that the windward side 5 or the leeward side 6 of the first shell 33 is cut first based on the placement posture of the wind turbine blades.

[0087] Alternatively, the portions of the first shell 33 located on the windward side 5 and the leeward side 6 can be cut simultaneously.

[0088] It is understandable that the specific cutting methods for the windward side 5 and the leeward side 6 of the first shell 33 can all adopt the operation method of step S1 above, so as to simplify the cutting process of the first shell 33.

[0089] like Figures 1 to 3 As shown, in some embodiments, step S2 specifically includes:

[0090] Step S21: Mark multiple third cutting lines on the second shell 34 at a third set distance along the extension direction of the fan blades, so that the third cutting lines extend from the end of the second shell 34 away from the main beam 4 toward the main beam 4. Similarly, in order to further simplify the cutting scheme, the third set distance can be the same as the first set distance, and the method for determining the third set distance is the same as the method for determining the first set distance.

[0091] Step S22: Cut the second shell 34 along the third cutting line and stop cutting when it reaches the first beam cap 41. The cutting method of the second shell 34 along the third cutting line is the same as the cutting method of the first shell 33 along the first cutting line 331, so as to simplify the cutting operation of the shell 3, improve the cutting efficiency, and have strong versatility.

[0092] In step S23, the second shell 34 is cut from the connection between the second shell 34 and the first beam cap 41 to the second set position along the direction from the blade tip 31 toward the blade root 32. The second shell 34 is cut into blade fragments. The second set position can be flush with the first set position 36 to ensure the neatness of the cut, reduce the cutting process, and facilitate the subsequent processing of the blade root 32.

[0093] It should be noted that when the second shell 34 is the shell portion between the main beam 4 and the leading edge 1, or when the second shell 34 is the shell portion between the main beam 4 and the trailing edge 2, the processing steps for the second shell 34 before step S22 are the same as those for the first shell 33 described above. In step S2, it is preferable that the second shell 34 is the shell portion of the windward side 5 or the leeward side 6 of the first remaining blade, that is, the shell portion between the leading edge 1 and the first beam cap 41 or between the trailing edge 2 and the first beam cap 41 is cut off. Since the shell portion (i.e., the remaining shell 35) in the formed second remaining blade has the same structure as the second shell 34 (the two are arranged in mirror image), the specific cutting method for this part can refer to the cutting method of the second shell 34. There is no need to design a separate cutting path, which simplifies the cutting process, improves cutting efficiency, enhances operability, and shortens the time consumption.

[0094] like Figures 1 to 3 As shown, in some embodiments, step S3 specifically includes:

[0095] Step S31: Cut along the extension direction of the wind turbine blade at the connection between the first beam cap 41 and the web plate 42 to separate the first beam cap 41 and the web plate 42.

[0096] Step S32: Cut the first beam cap 41 into multiple segments with a first set length to obtain fragments of the first beam cap 41. Cut the web plate 42 into multiple segments with a second set length along the extension direction perpendicular to the wind turbine blade (i.e., from left to right or from top to bottom in the figure). The first set length and the second set length need to be specifically determined according to the cutting requirements of the wind turbine blade so that the first beam cap 41 and the web plate 42 of the wind turbine blade can be cut and separated according to different sizes to ensure the maximum yield.

[0097] In step S33, the connection between the second beam cap 43 and the web plate 42 is cut along the extension direction of the wind turbine blade to separate the web plate 42 and the second beam cap 43, resulting in fragments of the web plate 42.

[0098] like Figures 1 to 3 As shown, in some embodiments, step S4 specifically includes:

[0099] Step S41: Mark a plurality of fourth cutting lines on the remaining housing 35 at a fourth predetermined distance along the extension direction of the fan blades, so that the fourth cutting lines extend from the end of the remaining housing 35 away from the second beam cap 43 toward the second beam cap 43. The fourth predetermined distance may be the same as the first predetermined distance, and the method for determining the fourth predetermined distance is the same as the method for determining the first predetermined distance.

[0100] Step S42: Cut the remaining shell 35 along the fourth cutting line and stop cutting when the second beam cap 43 is reached. The cutting method of the remaining shell 35 along the fourth cutting line is the same as the cutting method of the first shell 33 along the first cutting line 331.

[0101] In step S43, at the connection between the remaining shell 35 and the second beam cap 43, the remaining shell 35 is cut along the direction from the blade tip 31 toward the blade root 32 to the third set position, and the remaining shell 35 is cut into blade fragments, wherein the third set position can be flush with the first set position 36.

[0102] like Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments, step S5 specifically involves cutting the second beam cap 43 into multiple segments with a third predetermined length to obtain fragments of the second beam cap 43. The third predetermined length may be the same as the first predetermined length.

[0103] like Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments, step S6 specifically includes:

[0104] Step S61: Mark multiple cutting points along the circumference of the leaf root 32 on the leaf root 32. Based on the diameter of the leaf root 32 and the length of the section to be cut, determine the arrangement of multiple cutting points along the circumference of the leaf root 32 on the right end face of the leaf root 32 in the figure.

[0105] In step S62, at the cutting point, the leaf root 32 is cut into fragments along the axial direction of the leaf root 32, which means the leaf root 32 is divided from right to left.

[0106] like Figure 1 , Figure 2 and Figure 8 As shown, an embodiment of the present invention provides a waste wind turbine blade cutting system for implementing the cutting method of any of the above embodiments. The system includes a first shell portion 33 processing module, a first remaining blade processing module, a second remaining blade processing module, and a third remaining blade processing module. The shell portion between either the leading edge 1 or the trailing edge 2 and the main beam 4 is defined as the first shell portion 33.

[0107] The first shell portion 33 processing module is used to cut off the first shell portion 33 in the shell 3 to form the first remaining blade;

[0108] The first remaining blade processing module is used to cut off the second shell portion 34 from the first remaining blade to obtain the second remaining blade and fully expose the first beam cap 41, wherein the second shell portion 34 is the shell portion of the first remaining blade adjacent to the first beam cap 41;

[0109] The second remaining blade processing module is used to sequentially cut off the first beam cap 41 and web plate 42 on the main beam 4 in the second remaining blade to form the third remaining blade.

[0110] The third remaining blade processing module is used to remove the remaining shell 35 in the third remaining blade, so that the second beam cap 43 is fully exposed.

[0111] The technical advantages of the waste wind turbine blade cutting system according to the present invention are the same as those of the above-described waste wind turbine blade cutting method, and will not be repeated here.

[0112] like Figure 1 , Figure 2 and Figure 9 As shown, in some embodiments, the system further includes at least one of a second beam cap 43 processing module and a blade root 32 processing module, which are located after the third remaining blade processing module.

[0113] The second beam cap 43 processing module is used to cut the second beam cap 43;

[0114] The leaf root 32 processing module is used to cut the leaf root 32.

[0115] It is understood that in some embodiments of the present invention, the waste wind turbine blade cutting system includes a first shell portion 33 processing module, a first remaining blade processing module, a second remaining blade processing module, and a third remaining blade processing module; in other embodiments, the waste wind turbine blade cutting system includes a first shell portion 33 processing module, a first remaining blade processing module, a second remaining blade processing module, a third remaining blade processing module, and a second beam cap 43 processing module; in still other embodiments, the waste wind turbine blade cutting system includes a first shell portion 33 processing module, a first remaining blade processing module, a second remaining blade processing module, a third remaining blade processing module, a second beam cap 43 processing module, and a blade root 32 processing module. Therefore, the waste wind turbine blade cutting system of the present invention can be any of the three systems described above.

[0116] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0117] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0118] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0119] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0120] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0121] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for cutting waste wind turbine blades, wherein the wind turbine blade has a leading edge and a trailing edge and includes a connected shell and a main beam, the shell having a blade tip and a blade root, and the main beam including a connected first beam cap, a web plate, and a second beam cap, characterized in that, The shell portion between either the leading edge or the trailing edge and the main beam is defined as the first shell portion, and the method includes the following steps: The first shell portion in the housing is removed to form the first remaining blade; The second shell portion is removed from the first remaining blade to obtain the second remaining blade, and the first beam cap is completely exposed, wherein the second shell portion is the shell portion of the first remaining blade adjacent to the first beam cap; The first beam cap and the web plate on the main beam of the second remaining blade are sequentially removed to form the third remaining blade; The remaining shell in the third remaining blade is removed to fully expose the second beam cap; The step of cutting off the first shell portion in the housing to form the first remaining blade includes: On the first shell portion, a plurality of first cutting lines are marked at a first predetermined distance along the extension direction of the wind turbine blades, such that the first cutting lines extend from the end of the first shell portion away from the main beam toward the main beam; Cut the first shell portion along the first cutting line, and stop cutting when the main beam is reached; At the connection between the first shell and the main beam, the first shell is cut along the direction from the blade tip toward the blade root to a first predetermined position, and the first shell is cut into blade fragments.

2. The method for cutting waste wind turbine blades according to claim 1, characterized in that, After the step of removing the remaining shell from the third remaining blade to fully expose the second beam cap, the method further includes: Cut the second beam cap; and / or The leaf roots are cut.

3. The method for cutting waste wind turbine blades according to claim 1, characterized in that, The first shell portion is the shell portion between the main beam and the rear edge. Before the step of cutting the first shell portion along the first cutting line and stopping the cutting when the cutting reaches the main beam, the method further includes: A second cutting line is marked on the first shell portion, such that the second cutting line is spaced a second predetermined distance from the rear edge and extends along the contour line of the rear edge; The first shell portion is cut along the second cutting line to the first set position, separating the first shell portion and the main beam.

4. The method for cutting waste wind turbine blades according to claim 1, characterized in that, The first shell portion is the shell portion between the main beam and the leading edge. Before the step of cutting the first shell portion along the first cutting line and stopping the cutting when the cutting reaches the main beam, the method further includes: The first shell portion is cut along the contour line of the leading edge to the first set position, separating the first shell portion and the main beam.

5. The method for cutting waste wind turbine blades according to any one of claims 1-4, characterized in that, The wind turbine blades have a windward side and a leeward side. Depending on the arrangement of the wind turbine blades at the cutting site, the portions of the first shell located on the windward side and the leeward side are cut separately. Alternatively, the portions of the first shell located on both the windward and leeward sides can be cut simultaneously.

6. The method for cutting waste wind turbine blades according to claim 1, characterized in that, The step of removing the second shell portion from the first remaining blade to obtain the second remaining blade and completely exposing the first beam cap, wherein the second shell portion is the shell portion of the first remaining blade adjacent to the first beam cap, includes: On the second shell, a plurality of third cutting lines are marked at a third predetermined distance along the extension direction of the wind turbine blades, such that the third cutting lines extend from the end of the second shell away from the main beam toward the main beam; The second shell portion is cut along the third cutting line, and the cutting stops when the first beam cap is reached; At the connection point between the second shell and the first beam cap, the second shell is cut along the direction from the blade tip toward the blade root to a second predetermined position, and the second shell is cut into blade fragments.

7. The method for cutting waste wind turbine blades according to claim 1, characterized in that, The step of sequentially removing the first beam cap and the web plate on the main beam of the second remaining blade to form the third remaining blade includes: The first beam cap and the web are separated by cutting along the extension direction of the fan blade at the connection between the first beam cap and the web. The first beam cap is cut into multiple segments at a first predetermined length to obtain fragments of the first beam cap. The web is cut into multiple segments at a second predetermined length along the extension direction perpendicular to the wind turbine blade. Cut along the extension direction of the wind turbine blade at the connection between the second beam cap and the web to separate the web and the second beam cap, obtaining web fragments.

8. The method for cutting waste wind turbine blades according to claim 2, characterized in that, The step of cutting the leaf root includes: Multiple cutting points are marked on the leaf root along the circumference of the leaf root; At the cutting point, the leaf root is cut into leaf root fragments along the axial direction of the leaf root.

9. A waste wind turbine blade cutting system, characterized in that, For implementing the cutting method according to any one of claims 1-8, the system includes a first shell processing module, a first remaining blade processing module, a second remaining blade processing module, and a third remaining blade processing module, wherein the shell portion between either the leading edge or the trailing edge and the main beam constitutes the first shell, wherein... The first shell processing module is used to cut off the first shell portion in the shell to form a first remaining blade; The first remaining blade processing module is used to cut off the second shell portion from the first remaining blade to obtain the second remaining blade and completely expose the first beam cap, wherein the second shell portion is the shell portion of the first remaining blade adjacent to the first beam cap; The second remaining blade processing module is used to sequentially cut off the first beam cap and the web plate on the main beam in the second remaining blade to form a third remaining blade; The third remaining blade processing module is used to remove the remaining shell in the third remaining blade, so that the second beam cap is fully exposed.

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