A vane net structure

Abstract

This invention provides a blade net structure, including an installation carrier and a second rope. The installation carrier includes a first rope and a fixing member. The first rope is wound around the blade circumferentially, and the fixing member is disposed on the first rope. Multiple installation carriers are spaced apart along the direction from the blade tip to the blade root. Multiple installation carriers are connected sequentially by the second rope. At least a portion of the first rope is a dissolvable segment. This blade net structure replaces at least a portion of the first rope with a dissolvable segment. Utilizing the characteristic that the dissolvable segment is soluble in a pre-set dissolving solution, when a sprayer operates a spraying device to spray the dissolvable segment of the first rope, the segment dissolves, causing the first rope to break, thereby destroying the blade net structure and detaching it from the blade. This blade net structure is easy to remove, solving the problems of existing blade net structures being difficult to remove and having high manual removal costs.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation equipment technology, and in particular to a blade net structure. Background Technology

[0002] As wind turbine blade lengths continue to increase, blade vibration becomes increasingly prominent, especially during the installation and maintenance phases. Because the turbine cannot yaw and pitch normally during these times, flow-induced vibrations (including vortex-induced vibration and stall vibration) become a common problem. Currently, the main solution for suppressing blade vibration is to install a temporary blade mesh structure on the blade surface, and then install a flow-disrupting device on this mesh structure. The flow-disrupting device disturbs the airflow over the blade surface, thereby suppressing blade vibration. Once the wind turbine can yaw and pitch normally, the blade mesh structure and flow-disrupting device are removed.

[0003] Existing methods for dismantling blade net structures mainly include the rope pulling method and the manual suspended platform method. The rope pulling method involves stretching the main and auxiliary ropes of the blade net structure to open the Velcro-fastened mesh, causing the net to detach. The manual suspended platform method involves raising personnel to the blade in a suspended platform to manually dismantle the net. However, these existing methods have several problems, such as high costs associated with suspended platform dismantling, susceptibility to strong winds that hinder the successful opening of the mesh, and numerous difficulties encountered when performing dismantling operations at sea. Utility Model Content

[0004] The purpose of this utility model is to provide a blade net structure that addresses the numerous drawbacks of existing blade net structure removal methods.

[0005] To solve the above-mentioned technical problems, the present invention provides a blade net structure, comprising:

[0006] The mounting carrier includes a first rope and a fixing member. The first rope is used to wrap around the blade along the circumference of the wind turbine blade. The fixing member is disposed on the first rope and abuts against the blade. The fixing member is used to support the turbulence-carrying component. The mounting carrier is provided with multiple fixing members at intervals along the direction from the blade tip to the blade root.

[0007] A second rope is provided, extending along the direction from the leaf tip to the leaf root, and multiple mounting carriers are connected sequentially via the second rope.

[0008] Wherein, at least a portion of the first cord in the circumferential direction of the blade is a dissolution section, the dissolution section being designed to dissolve when a preset dissolving liquid is sprayed, thereby causing the first cord to break.

[0009] In some embodiments, the melting segment is a polyvinyl alcohol segment or a polyisobutylene segment.

[0010] In some embodiments, the first cord includes a fixed section connected to the melt-broken section, and the fastener is disposed on the fixed section.

[0011] In some embodiments, the fixing segment is a polyester material segment.

[0012] In some embodiments, the color of the fixed segment is different from the color of the dissolved segment.

[0013] In some embodiments, the mounting carrier includes two first cords spaced apart along a direction from the leaf tip to the leaf root.

[0014] In some embodiments, the mounting carrier includes two fixing members, namely a first fixing member abutting the trailing edge of the blade and a second fixing member abutting the leading edge of the blade.

[0015] In some embodiments, the first fastener has a first through hole for the first rope to pass through, and the second fastener has a second through hole for the first rope to pass through.

[0016] In some embodiments, a slot is provided on the surface of the first fixing member near the second fixing member, the slot being used to engage with the trailing edge of the blade.

[0017] In some embodiments, the dissolution segment is disposed between the first fixing member and the second fixing member.

[0018] In some embodiments, the fractured segment is positioned close to the first fixing member.

[0019] In some embodiments, the leaf net structure further includes a third rope, one end of which is connected to one of the plurality of mounting carriers, and the other end of which is used to connect to the leaf root.

[0020] In some embodiments, the third cord connects to the one of the plurality of mounting carriers closest to the blade tip.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This invention relates to a blade net structure that replaces at least a portion of the first rope with a dissolving segment. Utilizing the dissolving segment's solubility in a pre-set dissolving solution, when a sprayer operates the spraying equipment to spray the dissolving solution onto the segment of the first rope, the segment dissolves, causing the first rope to break. This, in turn, destroys the blade net structure, allowing it to be detached from the blade. This blade net structure is easy to remove, effectively solving the problems of existing blade net structures being difficult to remove and having high manual removal costs. Attached Figure Description

[0023] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0024] Figure 1 This is a schematic diagram of the blade net structure installed on the blade in an embodiment of this utility model;

[0025] Figure 2 for Figure 1 A schematic diagram of the structure for installing the carrier.

[0026] Explanation of reference numerals in the accompanying drawings of this utility model:

[0027] The blade net structure 100, the mounting carrier 10, the first rope 1, the melt-cut section 11, the fixing section 12, the fixing component 2, the first fixing component 2a, the second fixing component 2b, the first through hole 21, the second through hole 22, the slot 23, the boss 24, the deflector 3, the second rope 4, the third rope 5, the cable tie 6, the blade 200, the blade tip 210, and the blade root 220.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0031] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] This invention provides a blade mesh structure for installation on the blades of a wind turbine, and the blade mesh structure is designed for easy removal. Figure 1 and Figure 2 A preferred embodiment of the blade net structure provided by this utility model is shown.

[0033] Please see Figure 1 and Figure 2 In this embodiment, the blade net structure 100 includes a mounting carrier 10 and a second rope 4. The mounting carrier 10 includes a first rope 1 and a fixing member 2. The first rope 1 is used to wrap around the blade 200 along the circumference of the wind turbine blade 200. The fixing member 2 is disposed on the first rope 1 and abuts against the blade 200. The fixing member 2 is used to support the turbulence-inducing member 3. Multiple mounting carriers 10 are provided at intervals along the direction from the blade tip 210 to the blade root 220 of the blade 200. The second rope 4 extends along the direction from the blade tip 210 to the blade root 220. Multiple mounting carriers 10 are connected in sequence through the second rope 4. At least a portion of the first rope 1 in the circumferential direction of the blade 200 is a dissolution section 11. The dissolution section 11 is used to dissolve when a preset dissolving liquid is sprayed, so that the first rope 1 breaks.

[0034] Specifically, the wind turbine includes blades 200 and a hub (not shown in the figure). One end of the blades 200 is connected to the hub, so that the hub can drive the blades 200 to rotate. The end of the blades 200 near the hub is the blade root 220, and the end of the blades 200 away from the hub is the blade tip 210. The blades 200 have opposing leading and trailing edges in the direction of rotation, and the blades 200 have opposing windward and leeward sides.

[0035] The blade net structure 100 includes a mounting carrier 10, which includes a first rope 1 and a fixing member 2. The fixing member 2 is disposed on the first rope 1, and the first rope 1 is wound and fixed to the blade 200 along the circumference of the blade 200 to fix the fixing member 2 to the blade 200. The fixing member 2 serves as a carrier for a turbulence-inducing element 3, and turbulence-inducing elements 3, such as turbulence blocks, can be fixed to the fixing member 2 to fix the turbulence-inducing element 3 to the blade 200 through the mounting carrier 10. The turbulence-inducing element 3 may be part of the blade net structure 100, that is, the blade net structure 100 includes the turbulence-inducing element 3; or the turbulence-inducing element 3 may not be part of the blade net structure 100, that is, the blade net structure 100 does not include the turbulence-inducing element 3. The first rope 1 can be a circular cross-section winding rope; the first rope 1 can also be a flat cross-section winding tape. The following will describe the first rope 1 as an adhesive tape.

[0036] The blade net structure 100 includes multiple mounting carriers 10. These carriers 10 are sequentially and spaced apart on the blade 200 along a direction from the blade tip 210 to the blade root 220 (i.e., the length direction of the blade 200). The multiple mounting carriers 10 are sequentially connected by a second rope 4 extending along the length direction of the blade 200, thus linking the multiple mounting carriers 10 together. The second rope 4 can be a circular cross-section connecting rope; it can also be a flat cross-section connecting strip. The following description uses a wire harness as an example of the second rope 4.

[0037] At least a portion of the first cord 1 in the circumferential direction of the blade 200 is a soluble segment 11 made of a predetermined material, which is soluble in a predetermined dissolving solution. The predetermined dissolving solution can be alcohol or hot water at a temperature higher than a predetermined temperature (the temperature range of hot water is typically between 40°C and 100°C; for example, the predetermined dissolving solution can be hot water at 80°C). For example, the soluble segment 11 can be a polyvinyl alcohol segment, meaning the soluble segment 11 can be made of polyvinyl alcohol, thus the soluble segment 11 can dissolve in hot water above 70°C; the soluble segment 11 can also be a polyisobutylene segment, meaning the soluble segment 11 can be made of polyisobutylene, thus the soluble segment 11 can dissolve in alcohol. The following description will use the example of the soluble segment 11 being made of polyvinyl alcohol and the predetermined dissolving solution being hot water above 70°C.

[0038] At least a portion of the first cord 1 in the circumferential direction of the blade 200 is a melt-cut section 11. This can be the entire first cord 1 being a melt-cut section 11, meaning the entire first cord 1 is made of polyvinyl alcohol; or it can be a portion of the first cord 1 in the circumferential direction of the blade 200 being a melt-cut section 11, meaning a portion of the first cord 1 is made of polyvinyl alcohol, and the remaining portion of the first cord 1 is made of a material insoluble in a predetermined solution. The following will use the portion of the first cord 1 in the circumferential direction of the blade 200 being a melt-cut section 11 as an example for further explanation. When personnel need to remove the blade net structure 100, they can operate a spraying device (such as a drone carrying a water sprayer; the following will use a drone carrying a water sprayer as an example) to spray hot water onto all the dissolution sections 11 of the first rope 1, so that all the dissolution sections 11 of the first rope 1 can be dissolved, allowing all the first rope 1 to break after the dissolution sections 11 are dissolved, thereby destroying the blade net structure 100 and untying the blade net structure 100 from the blade 200. At this point, the blade net structure 100 can be removed from the blade 200.

[0039] The blade net structure 100 of this invention replaces at least a portion of the first rope 1 with a dissolving segment 11. Utilizing the soluble nature of the dissolving segment 11 in a pre-set dissolving solution, when a sprayer operates the spraying equipment to spray the dissolving segment 11 onto the first rope 1, the dissolving segment 11 dissolves, causing the first rope 1 to break. This, in turn, destroys the blade net structure 100, thus detaching the blade net structure 100 from the blade 200 and allowing it to be removed from the blade 200. This blade net structure 100 is easy to remove, effectively solving the problems of existing blade net structures being difficult to remove and having high manual removal costs.

[0040] Multiple mounting carriers 10 are connected together in series by a second rope 4. There can be one second rope 4; or multiple second rope 4s can be arranged at intervals along the circumference of the blade 200. The second rope 4 connects to the mounting carrier 10, and can be connected to the first rope 1; the second rope 4 can also be connected to the fixing member 2.

[0041] As described above, the portion of the first rope 1, excluding the dissolution section 11, can be made of a material insoluble in the pre-set solution. Optionally, please refer to [link to relevant documentation]. Figure 1 and Figure 2 In this embodiment, the first rope 1 includes a fixed section 12 connected to the melt-broken section 11, and the fixing member 2 is disposed on the fixed section 12.

[0042] Specifically, the fixing segment 12 can be made of a material such as polyester that is insoluble in the preset solution. Optionally, in this embodiment, the fixing segment 12 is a polyester segment, that is, the fixing segment 12 is made of polyester. The following description will take the fixing segment 12 being a polyester segment as an example. Then, the first rope 1 can be woven from polyvinyl alcohol nonwoven fabric and polyester nonwoven fabric. The fixing member 2 is disposed on the fixing segment 12, so that when the first rope 1 is broken after being dissolved in the melting segment 11, the fixing member 2 can still be connected to the first rope 1.

[0043] Optionally, in this embodiment, the color of the fixed segment 12 is different from the color of the dissolution segment 11.

[0044] Specifically, the dissolving section 11 and the fixed section 12 are set to different colors. For example, the fixed section 12 can be set to black, while the dissolving section 11 can be set to white or blue. In this way, personnel can distinguish and identify the dissolving section 11 and the fixed section 12 based on the color, which makes it easier for personnel to spray the preset dissolving liquid onto the dissolving section 11 of the first rope 1.

[0045] Each mounting carrier 10 may include a first rope 1; each mounting carrier 10 may also include a plurality of first ropes 1 spaced apart along a direction from the blade tip 210 to the blade root 220. Optionally, see [link to relevant documentation]. Figure 1 and Figure 2 In this embodiment, the mounting carrier 10 includes two first ropes 1 arranged at intervals along the direction from the leaf tip 210 to the leaf root 220. The following description will take the mounting carrier 10 including two first ropes 1 arranged at intervals along the length direction of the blade 200 as an example.

[0046] Each mounting carrier 10 may include one fastener 2; each mounting carrier 10 may also include multiple fasteners 2 arranged at circumferential intervals along the blade 200. Optionally, please refer to Figure 1 and Figure 2 In this embodiment, the mounting carrier 10 includes two fixing members 2, namely a first fixing member 2a that abuts the rear edge of the blade 200 and a second fixing member 2b that abuts the front edge of the blade 200.

[0047] Specifically, two fixing members 2 (i.e., the first fixing member 2a and the second fixing member 2b) are fixed together by two first ropes 1, and two deflectors 3 are respectively fixed to the two fixing members 2, thereby forming an installation carrier 10. The following will describe the installation carrier 10 including the first fixing member 2a and the second fixing member 2b as an example.

[0048] The specific shape and style of the first fastener 2a can be set according to the actual situation. For example, the first fastener 2a can be set in the shape of a block or a plate. Optionally, please refer to Figure 1 and Figure 2 In this embodiment, a slot 23 is provided on the surface of the first fixing member 2a near the second fixing member 2b. The slot 23 is used to engage with the trailing edge of the blade 200.

[0049] Specifically, a groove 23 is provided on the surface of the first fixing member 2a facing the trailing edge of the blade 200, and the groove 23 extends through the first fixing member 2a along the length of the blade 200. When the blade net structure 100 is installed on the blade 200, the trailing edge of the blade 200 extends from the groove opening into the groove 23 on the first fixing member 2a, so that the trailing edge of the blade 200 and the groove 23 form a snap-fit ​​engagement. This not only achieves the installation and positioning between the blade 200 and the first fixing member 2a, but also prevents the blade net structure 100 from slipping off the blade 200.

[0050] The first fastener 2a can be fixed to the first rope 1 by means of adhesive bonding or bolting. Optionally, please refer to [link to relevant documentation]. Figure 1 and Figure 2 In this embodiment, the first fixing member 2a is provided with a first through hole 21 for the first rope 1 to pass through.

[0051] Specifically, for each first rope 1, the first fixing member 2a is provided with two first through holes 21. Thus, the first rope 1 can pass through one first through hole 21 and the side of the blade 200 near the windward side, to the side of the first fixing member 2a away from the second fixing member 2b, and then pass through the other first through hole 21 and the side of the blade 200 near the leeward side, to the side of the first fixing member 2a near the second fixing member 2b, thereby securing the first fixing member 2a to the first rope 1. The first fixing member 2a has four first through holes 21 corresponding to two first ropes 1.

[0052] Further, please refer to Figure 1 and Figure 2 In this embodiment, the first fixing member 2a has two protrusions 24 extending along the length direction of the blade 200 on two opposing surfaces in the direction from the windward side to the leeward side of the blade 200, and each protrusion 24 is provided with two first through holes 21.

[0053] The specific shape and style of the second fastener 2b can be set according to the actual situation. For example, the second fastener 2b can be set in the shape of a block or a plate. Optionally, please refer to Figure 1 and Figure 2 In this embodiment, the second fixing member 2b is plate-shaped.

[0054] The second fastener 2b can be fixed to the first rope 1 by means of adhesive bonding or bolting. Optionally, please refer to [link / reference]. Figure 1 and Figure 2 In this embodiment, the second fastener 2b is provided with a second through hole 22 for the first rope 1 to pass through.

[0055] Specifically, for each first rope 1, the second fixing member 2b is provided with two second through holes 22. Thus, the first rope 1 can pass through one second through hole 22 and the windward side of the blade 200 to the side of the second fixing member 2b away from the first fixing member 2a, and then pass through the other second through hole 22 and the leeward side of the blade 200 to the side of the second fixing member 2b near the first fixing member 2a, thereby securing the second fixing member 2b to the first rope 1. The second fixing member 2b has four second through holes 22 corresponding to the two first ropes 1.

[0056] The specific location of the fracture segment 11 on the first rope 1 can be set according to the actual situation. Optionally, please refer to [link / reference needed]. Figure 1 and Figure 2 In this embodiment, the dissolution segment 11 is disposed between the first fixing member 2a and the second fixing member 2b.

[0057] Specifically, a dissolution segment 11 may be provided on the first rope 1; multiple dissolution segments 11 may also be provided at intervals along the circumference of the blade 200 on the first rope 1. By placing one or more dissolution segments 11 between the first fixing member 2a and the second fixing member 2b, it is beneficial to ensure that the first rope 1 can be completely broken after the dissolution segment 11 dissolves.

[0058] Further, please refer to Figure 1 and Figure 2 In this embodiment, the dissolution segment 11 is positioned close to the first fixing member 2a. The dissolution segment 11 is positioned near the first fixing member 2a (i.e., the trailing edge of the blade 200) to facilitate dissolution of the dissolution segment 11 and removal of the blade net structure 100.

[0059] The spoiler 3 is fixed to the fixing member 2. The spoiler 3 can be fixed to the fixing member 2 by means of adhesive bonding or binding with cable ties 6. Optionally, please refer to Figure 1 and Figure 2 In this embodiment, the deflector 3 is bound to the fixing member 2 by a cable tie 6, and the cable tie 6 connects two first ropes 1. This method of fixing the deflector 3 is relatively simple.

[0060] Optionally, please refer to Figure 1 and Figure 2 In this embodiment, the leaf net structure 100 also includes a third rope 5, one end of which is connected to one of the plurality of mounting carriers 10, and the other end of which is used to connect to the leaf root 220.

[0061] Specifically, the third rope 5 can be a connecting rope with a circular cross-section; the third rope 5 can also be a connecting rope with a flat cross-section. The following description will use the third rope 5 as a traction rope as an example. The third rope 5 can be connected in series to multiple mounting carriers 10 and finally tied to the blade root 220. Thus, after the third rope 5 is untied from the blade root 220 and the blade net structure 100 is destroyed, one end of the third rope 5 can naturally fall to the ground. Ground personnel can then pull the third rope 5 to detach the blade net structure 100 from the blade 200.

[0062] Further, please refer to Figure 1 and Figure 2 In this embodiment, the third rope 5 is connected to the one of the multiple mounting carriers 10 closest to the blade tip 210. This allows the blade net structure 100 to detach from the blade 200 relatively easily when ground personnel pull the third rope 5.

[0063] When the wind turbine is in a shutdown state, on-site personnel yaw the blade 200 to a Y-shape (blade 200 is in a Y-shape). Personnel at the top of the tower untangle the third rope 5 from the blade root 220, and ground personnel pull the third rope 5. Ground personnel operate spraying equipment to spray hot water onto the melted section 11 on the blade 200 perpendicular to the ground. The melted section 11 of the first rope 1 dissolves, and the blade net structure 100 is destroyed. Ground personnel pull the third rope 5 to make the blade net structure 100 detach from the blade 200. After the blade net structure 100 on one blade 200 is successfully removed, the above operation is repeated until the blade net structures 100 on all blades 200 are completely removed.

[0064] Compared to the rope-pulling method, the blade net structure 100 eliminates the problems of limited space and the need for vehicles due to insufficient manpower. Furthermore, compared to the manual suspended platform method, the blade net structure 100 is made from inexpensive polyvinyl alcohol, saving on labor and platform costs.

[0065] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A blade mesh structure, characterized in that, include: The mounting carrier includes a first rope and a fixing member. The first rope is used to wrap around the blade along the circumference of the wind turbine blade. The fixing member is disposed on the first rope and abuts against the blade. The fixing member is used to support the turbulence-carrying component. The mounting carrier is provided with multiple fixing members at intervals along the direction from the blade tip to the blade root. A second rope is provided, extending along the direction from the leaf tip to the leaf root, and multiple mounting carriers are connected sequentially via the second rope. Wherein, at least a portion of the first cord in the circumferential direction of the blade is a dissolution section, the dissolution section being designed to dissolve when a preset dissolving liquid is sprayed, thereby causing the first cord to break.

2. The blade mesh structure according to claim 1, characterized in that, The fracture segment is made of polyvinyl alcohol or polyisobutylene.

3. The blade mesh structure according to claim 1, characterized in that, The first rope includes a fixed section connected to the melt-broken section, and the fixing member is disposed on the fixed section.

4. The blade mesh structure according to claim 3, characterized in that, The fixing segment is made of polyester; and / or the color of the fixing segment is different from the color of the melting segment.

5. The blade mesh structure according to claim 1, characterized in that, The mounting carrier includes two first rope straps spaced apart along a direction from the leaf tip to the leaf root; and / or The mounting carrier includes two fixing members, namely a first fixing member abutting the trailing edge of the blade and a second fixing member abutting the leading edge of the blade.

6. The blade mesh structure according to claim 5, characterized in that, The first fastener has a first through hole for the first rope to pass through, and the second fastener has a second through hole for the first rope to pass through; and / or, The first fixing member has a slot on its surface near the second fixing member, the slot being used to engage with the trailing edge of the blade.

7. The blade mesh structure according to claim 5, characterized in that, The dissolution segment is disposed between the first fixing member and the second fixing member.

8. The blade mesh structure according to claim 7, characterized in that, The fractured section is positioned close to the first fixing member.

9. The blade mesh structure according to claim 1, characterized in that, The blade net structure also includes a third rope, one end of which is connected to one of the plurality of mounting carriers, and the other end of which is used to connect to the leaf root.

10. The blade mesh structure according to claim 9, characterized in that, The third rope connects to the one of the multiple mounting carriers closest to the blade tip.

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