Front edge protective layer construction method and front edge protective layer construction device for windmill blade

Abstract

Provided are a method for constructing a leading edge protective layer for a wind turbine blade and a device for constructing a leading edge protective layer, whereby the layer thickness of the protective layer (the layer thickness of each path layer) can be grasped and managed in real time during construction. A leading edge protective layer construction method in which a protective layer (30) comprising a plurality of path layers is constructed at the leading edge of a windmill blade main body (5a) formed from FRP (Fiber Reinforced Plastic), where n is a natural number, n is a natural number, and n is a natural number. The steps of a path layer constructed region (Ra) in which the n-th path layer has been constructed and a path layer non-constructed region (Rb) in which the n-th path layer has not been constructed and which is adjacent to the path layer constructed region (Ra), which are formed during the n-th construction, are measured.

Description

Technical Field

[0001] The invention relates to a method and a device for constructing a leading edge protective layer of a windmill blade. Background Art

[0002] As the windmill rotor rotates, the windmill blades collide with foreign matter in the air (such as raindrops and dust) and are eroded, thereby causing erosion in a region including the leading edge of the windmill blades.

[0003] In order to protect a wind turbine blade from such erosion, it is known to form an erosion-resistant protective layer in the relevant region of the blade (see Patent Document 1).

[0004] Previous technical literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Laid-Open No. 2022-175830 Summary of the Invention

[0007] Technical issues to be solved by the invention

[0008] The protective layer is formed by stacking multiple pass layers, but it is preferable that the thickness of the protective layer be uniform across the entire construction area after formation. Therefore, it is desirable to understand and manage the thickness of the protective layer (the thickness of each pass layer) in real time.

[0009] The present invention has been completed in view of this situation, and its purpose is to provide a leading edge protective layer construction method and leading edge protective layer construction device for wind turbine blades that can grasp / manage the layer thickness of the protective layer (the layer thickness of each path layer) in real time during the construction process.

[0010] Means for solving technical problems

[0011] In order to solve the above-mentioned problems, the method and apparatus for constructing a leading edge cover for a wind turbine blade according to the present invention adopt the following means.

[0012] A leading edge protective layer construction method for a windmill blade involved in one embodiment of the present invention is a leading edge protective layer construction method for constructing a protective layer composed of multiple path layers on the leading edge of a windmill blade body formed of FRP, wherein, when n is set to a natural number, the steps of the path layer constructed area where the nth path layer has been constructed and the path layer unconstructed area where the nth path layer has not been constructed and adjacent to the path layer constructed area are measured.

[0013] Furthermore, a leading edge protective layer construction device according to one embodiment of the present invention is configured to construct a protective layer on the leading edge of a wind turbine blade body formed of FRP, and the leading edge protective layer construction device comprises: a spray gun for spraying a flame containing a construction material; and a displacement meter for measuring the height of a step. When n is set to a natural number, the displacement meter measures the steps of a constructed area of ​​a path layer where the nth path layer has been constructed and an unconstructed area of ​​a path layer where the nth path layer has not been constructed and which is adjacent to the constructed area of ​​the path layer.

[0014] Effects of the Invention

[0015] The thickness of the protective layer (the thickness of each path layer) can be grasped and managed in real time during construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a wind turbine generator using a wind turbine blade having a protective layer formed thereon according to the first embodiment of the present invention.

[0017] Figure 2 It is a plan view of a wind turbine blade having a protective layer formed thereon according to the first embodiment of the present invention.

[0018] Figure 3 It is a partially enlarged plan view showing the tip of a wind turbine blade having a protective layer formed thereon according to the first embodiment of the present invention.

[0019] Figure 4 It is a side view of the leading edge cover application device according to the first embodiment of the present invention.

[0020] Figure 5 yes Figure 4 A top view of the leading edge protection layer construction device is shown.

[0021] Figure 6 yes Figure 5 A cross-sectional view of the protective layer (in the case of the first path layer) and the wind turbine blade body along the cutting line VI-VI is shown.

[0022] Figure 7 is with Figure 6 Cross-sectional view of the protective layer at the same position (from the 1st path layer to the Nth path layer) and the wind turbine blade body.

[0023] Figure 8 The second embodiment involves Figure 6 Cross-sectional view of the protective layer and the wind turbine blade body at the same position.

[0024] Figure 9 This is the modification involved in Figure 6Cross-sectional view of the protective layer and the wind turbine blade body at the same position. DETAILED DESCRIPTION

[0025] [First embodiment]

[0026] Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

[0027] <About the structure of windmill blades>

[0028] like Figure 1 As shown, the wind turbine generator 1 includes a tower 3 erected on an installation surface B, a nacelle 6 installed at an upper end of the tower 3 , and a rotor head 4 rotatably installed on the nacelle 6 about a substantially horizontal axis.

[0029] A plurality of (eg, three) windmill blades 5 are radially mounted on the rotor head 4 around its rotation axis.

[0030] Thus, the force of the wind that strikes the wind turbine blades 5 in the direction of the rotation axis of the rotor head 4 is converted into power to rotate the rotor head 4 about the rotation axis. The obtained power is converted into electricity by a generator (not shown) and supplied to the outside.

[0031] like Figure 2 As shown, the wind turbine blade 5 includes: a blade root portion 10 extending along a blade length direction D1 relative to a radial direction of the rotor head 4 and mounted on the rotor head 4; a blade tip portion 12 located at a position farthest from the rotor head 4; and a blade-shaped portion 14 extending between the blade root portion 10 and the blade tip portion 12.

[0032] The wind turbine blade 5 has a leading edge 16 and a trailing edge 18 from the blade root 10 to the blade tip 12 .

[0033] The outer shape of the wind turbine blade 5 is defined by a ventral side surface 20 which is a pressure side (positive pressure side) and a dorsal side surface 22 which is a negative pressure side facing the ventral side surface 20 .

[0034] The wind turbine blade 5 is formed of FRP (Fiber-Reinforced Plastic).

[0035] As FRP, carbon fiber reinforced plastic (CFRP), glass fiber reinforced plastic (GFRP), or the like is used.

[0036] The entire length of the wind turbine blade 5 from the blade root 10 to the blade tip 12 is set to be in the order of 100 m, for example, 80 m to 150 m. Furthermore, as the wind turbine blade 5 of this embodiment, a 200 m-class wind turbine blade can be adopted.

[0037] like Figure 2 and Figure 3As shown, a protective layer 30 is formed relative to the wind turbine blade body 5a at a predetermined area (leading edge portion) including the leading edge 16 at the blade tip 12 of the wind turbine blade 5. The protective layer 30 is formed by a leading edge protective layer installation device 100 (hereinafter referred to as "installation device 100") that is moved by a robot (not shown).

[0038] The construction range of the protective layer 30 is Figure 2 Indicated by thick lines, Figure 3 Indicated by cross hatching.

[0039] The construction range of the protective layer 30 in the blade length direction D1 is 20 to 40 meters, preferably approximately 30 meters, from the tip 12a of the blade tip portion 12. However, the construction range of the protective layer 30 is not limited to this. For example, in areas where the peripheral speed exceeds 90 m / s, the construction range is set to approximately 1 / 3 of the total length of the wind turbine blade 5 from the tip.

[0040] The protective layer 30 is made of a material having excellent wear resistance, such as cermet or a Co alloy such as a Co (cobalt)-based alloy.

[0041] The protective layer 30 is applied by, for example, HVOF (High Velocity Oxy-Fuel).

[0042] The protective layer 30 is composed of multiple path layers. Specifically, the protective layer 30 is constructed by stacking the path layers (N: a natural number greater than or equal to 2), such as a first path layer 31 constructed on the surface of the wind turbine blade body 5a or a base layer formed on the surface, and a second path layer 32 constructed on the first path layer 31. The paths are stacked one after the other, from the first path layer 31 to the Nth path layer 30N (the path layer formed by the Nth construction).

[0043] <About construction equipment>

[0044] like Figure 4 and Figure 5 As shown, the construction device 100 includes a spray gun 110 and a displacement meter 120 .

[0045] The spray gun 110 and the displacement meter 120 are moved by a robot (not shown) or the like while maintaining a constant distance from each other.

[0046] The spray gun 110 is a device that sprays a flame 111 containing a construction material 112 toward a construction object (the wind turbine blade body 5a). Figure 5 In the embodiment, the range of the flame 111 sprayed onto the construction object is referred to as the flame range 113. Here, the flame 111 is a combustion flame caused by an oxidant containing oxygen and a fuel.

[0047] The spray gun 110 moves, for example, along the blade length direction D1 and sprays a flame 111 containing a construction material 112 onto the wind turbine blade body 5a. At this time, the area where the construction material 112 adheres due to the construction (spraying) performed during one movement of the spray gun 110 in a predetermined direction (i.e., one pass) is referred to as a "pass layer."

[0048] The displacement meter 120 is a device (sensor) for measuring steps.

[0049] For example, Figure 5 and Figure 6 As shown, the displacement meter 120 measures the difference between the path layer constructed area Ra, where the first path layer 31 has been constructed, and the path layer unconstructed area Rb, where the first path layer 31 has not been constructed. At this time, the path layer unconstructed area Rb and the first path layer 31, i.e., the path layer constructed area Ra, are adjacent in the blade chord direction D2. Here, the blade chord direction D2 is a direction substantially perpendicular to the blade longitudinal direction D1.

[0050] Here, a path layer is a region where the construction material 112 is sparsely deposited, and therefore may not have a uniform layer thickness along the path direction of the spray gun 110. Therefore, for example, the layer thickness at various locations along the path direction of the path layer can be averaged to obtain a representative layer thickness for the path layer.

[0051] In addition, the route layer unconstructed region Rb in the present embodiment becomes the surface of the wind turbine blade body 5a or a base layer formed on the surface.

[0052] As described above, the protective layer 30 is composed of a plurality of stacked path layers. Therefore, in order to understand the final layer thickness of the protective layer 30, as shown in FIG. Figure 7 As shown, it is sufficient to measure the step between the route layer constructed area Ra where the Nth route layer 30N located on the outermost surface is formed and the route layer unconstructed area Rb.

[0053] At this time, if the thickness of the protective layer 30 at each time a path layer is formed is measured using the displacement meter 120, the thickness of the nth path layer (n: a natural number) can be calculated based on the difference between the thickness of the protective layer 30 at the time the nth path layer is formed and the thickness of the protective layer 30 at the time the n-1th path layer is formed. When n = 1, the n-1th path layer (the 0th path layer) becomes the surface of the wind turbine blade body 5a or a base layer formed on the surface.

[0054] Furthermore, if the layer thickness of the protective layer 30 at that point in time is grasped by the displacement meter 120 every m times the path is passed, the total layer thickness of the path layer formed by passing through the path m times (the layer thickness of m layers) can be calculated based on the difference between the layer thickness of the protective layer 30 when the n-th path layer is formed and the layer thickness of the protective layer 30 when the nm-th path layer is formed (m: a natural number, and nm>0).

[0055] Here, the displacement meter 120 measures the difference between the route layer constructed area Ra and the route layer unconstructed area Rb, and therefore the displacement measurement range 121 needs to be arranged to cover both the route layer constructed area Ra and the route layer unconstructed area Rb.

[0056] Specifically, the displacement measurement range 121 is preferably positioned behind the flame range 113 relative to the direction of travel of the spray gun 110 and offset closer to the untreated path layer region Rb than the spray gun 110. In the present embodiment, the spray gun 110 moves along the blade length direction D1, so the displacement measurement range 121 is offset closer to the untreated path layer region Rb in the blade chord direction D2.

[0057] As described above, by providing the construction device 100 with the displacement meter 120 , the thickness of each route layer or the thickness of the protective layer 30 can be grasped at the same time as the construction.

[0058] That is, by monitoring the thickness of each path layer or the thickness of the protective layer 30 in real time during construction, appropriate construction management can be performed. For example, if there is an area where the thickness of the protective layer 30 is less than the reference layer thickness value, this area can be identified as a reconstructed area requiring additional construction.

[0059] like Figure 4 and Figure 5 As shown, the construction device 100 may further include a thermometer 130 and a cooling unit 140 .

[0060] The thermometer 130 and the cooling unit 140 are moved by a robot (not shown) or the like while being spaced a certain distance apart from the spray gun 110 .

[0061] The thermometer 130 is a device (sensor) that measures the temperature of the protective layer 30 (path layer) in a non-contact manner.

[0062] The thermometer 130 preferably measures the temperature of the newly formed protective layer 30 (path layer). Therefore, the thermometer 130 is preferably arranged so that the temperature measurement range 131 is located immediately behind the flame range 113 with respect to the travel direction of the spray gun 110.

[0063] However, if the temperature measurement range 131 is too close to the flame range 113 , the accurate temperature cannot be measured due to the heat influence from the flame 111 . Therefore, it is preferable to arrange the thermometer 130 so that at least the temperature measurement range 131 does not overlap with the flame range 113 .

[0064] The cooling unit 140 is a device that cools the protective layer 30 (path layer) by blowing gas onto the protective layer 30 (path layer), for example.

[0065] Cooling unit 140 adjusts cooling capacity based on information from thermometer 130. Specifically, if the measured temperature of protective layer 30 (path layer) is above a reference temperature, cooling capacity is enhanced by increasing the gas flow rate or lowering the gas temperature. This is because when forming the (n+1)th path layer on the (n)th path layer, if the temperature of the (n)th path layer is high, the (n+1)th path layer will be difficult to form.

[0066] Furthermore, the control of each device constituting the construction apparatus 100 , the control of the robot, etc., and the calculation of necessary numerical values ​​are executed by the control unit 160 .

[0067] The control unit 160 includes, for example, a CPU (Central Processing Unit), a main memory, a secondary storage (memory), etc. Furthermore, the control unit 160 may include a communication unit for transmitting and receiving information with other devices.

[0068] The main storage device is composed of a writable memory such as a cache memory or a RAM (Random Access Memory), and is used as a work area for reading execution programs of the CPU and writing processing data based on the execution programs.

[0069] A secondary storage device is a non-transitory computer-readable storage medium, such as a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, or a semiconductor memory.

[0070] For example, a series of processes for implementing various functions can be stored as a program in a secondary storage device, with the CPU reading the program into the primary storage device and executing information processing / arithmetic operations to implement the various functions. Alternatively, the program can be pre-installed in a secondary storage device, provided as stored on a computer-readable storage medium, or transmitted via wired or wireless communication means. Computer-readable storage media include magnetic disks, magneto-optical disks, CD-ROMs, DVD-ROMs, semiconductor memories, and the like.

[0071] According to this embodiment, the following effects are achieved.

[0072] The step between the route layer constructed area Ra where the n-th route layer has been constructed and the route layer unconstructed area Rb can be measured as the layer thickness of the protective layer 30 at the stage where the n-th construction is completed.

[0073] Furthermore, the thickness of the n-th path layer can be calculated based on the thickness of the protective layer 30 at the stage where the n-th construction is completed and the thickness of the protective layer 30 at the stage where the (n-1)-th construction is completed.

[0074] Furthermore, the total thickness of the path layer formed by the m-th path (the thickness of m layers) can be calculated based on the thickness of the protective layer 30 at the stage of completing the n-th construction and the thickness of the protective layer 30 at the stage of completing the nm-th construction.

[0075] Furthermore, if the area where the layer thickness of the protective layer 30 becomes less than the reference layer thickness value is determined as a re-construction area requiring additional construction, the layer thickness of the protective layer 30 in the re-construction area can be set to be greater than the reference layer thickness value by performing construction again in the re-construction area.

[0076] Furthermore, if the measured temperature of the protective layer 30 (nth path layer) is above the reference temperature, the cooling capacity of the nth path layer after the temperature measurement can be used to reliably cool the high-temperature region of the nth path layer. When forming the (n+1)th path layer on the nth path layer, if the temperature of the nth path layer is high, it will be difficult to form the (n+1)th path layer. However, by reliably cooling the high-temperature region of the nth path layer, the likelihood of this occurring can be reduced.

[0077] Furthermore, the thermometer 130 is disposed so that the temperature measurement range 131 does not overlap with the flame range 113 of the flame 111 , and thus the thermal influence of the flame 111 on the temperature measurement range 131 can be reduced.

[0078] [Second embodiment]

[0079] Hereinafter, a second embodiment of the present invention will be described with reference to the drawings.

[0080] In addition, about the same structure as 1st Embodiment, the same code|symbol is attached|subjected and the description is abbreviate|omitted.

[0081] In the first embodiment, after forming a row of protective layers 30 along the blade length direction D1, the spray gun 110 is moved along the blade chord direction D2, and then the row of protective layers 30 along the blade length direction D1 is formed into the next row of protective layers 30, and this operation is repeated, thereby forming a protective layer 30 of a specified thickness in the entire construction range.

[0082] In contrast, in this embodiment, Figure 8 As shown, after forming a row of first path layers 31 along the blade length direction D1, the spray gun 110 is moved along the blade chord direction D2 to form the first path layer 31 in the row along the blade length direction D1 as the next row of first path layers 31. This operation is repeated to form the first path layer 31 over the entire construction area. Then, the second path layer 32, the third path layer 33, and so on are sequentially stacked through the same process, ultimately forming a protective layer 30 of a predetermined thickness over the entire construction area.

[0083] Therefore, when the path layer being formed is the nth path layer, the path layer unconstructed region Rb in this embodiment becomes the surface of the n-1th path layer. Therefore, the step measured by the displacement meter 120 always becomes the layer thickness of the nth path layer.

[0084] At this time, by understanding the thickness of each layer from the first routing layer 31 to the n-th routing layer and integrating these layer thicknesses, the layer thickness of the protective layer 30 at the time of forming the n-th routing layer can be calculated.

[0085] For example, Figure 9 As shown, when the fourth path layer 34 of the first row L1 is formed, the path layer-constructed region Ra becomes the region where the fourth path layer 34 is formed, and the path layer-unconstructed region Rb becomes the region where the third path layer 33 is formed (specifically, the region where the third path layer 33 of the second row L2 is formed). The thickness of the fourth path layer 34, which is the step between the fourth path layer 34 and the third path layer 33, is then measured using the displacement meter 120.

[0086] Then, by integrating the thicknesses of the layers from the first routing layer 31 to the fourth routing layer 34 , the thickness of the protective layer 30 at the time when the fourth routing layer 34 is formed can be calculated.

[0087] In addition, only when the path layer being formed is the first path layer 31 , the path layer unconstructed region Rb in the present embodiment becomes the surface of the wind turbine blade body 5 a or a base layer formed on the surface.

[0088] According to this embodiment, the following effects are achieved.

[0089] The step between the route layer constructed region Ra where the n-th route layer has been constructed and the route layer unconstructed region Rb where the route layer has not been constructed can be measured as the layer thickness of the n-th route layer.

[0090] Furthermore, the layer thickness of the protective layer 30 at the stage where the n-th construction is completed can be calculated based on the thickness of each layer from the first route layer 31 to the n-th route layer.

[0091] [Modification]

[0092] The first embodiment and the second embodiment may be combined.

[0093] For example, Figure 9 As shown, a row of stacked path layers ( Figure 9 In the case of a first path layer 31 and a second path layer 32, the spray gun 110 is moved along the blade chord direction D2 to form the first path layer 31 and the second path layer 32 in the blade length direction D1 as the next row of the first path layer 31 and the second path layer 32. This operation is then repeated to form the first path layer 31 and the second path layer 32 over the entire construction area. The same process can then be used to sequentially stack the third path layer 33, the fourth path layer 34, and so on, over the entire construction area in two layers, ultimately forming a protective layer 30 of a predetermined thickness over the entire construction area.

[0094] The first path layer 31 and the second path layer 32 are formed by, for example, reciprocating the spray gun 110 .

[0095] Alternatively, path layers may be stacked sequentially every three or more layers throughout the entire construction area.

[0096] Each embodiment described above can be understood, for example, as follows.

[0097] The leading edge protective layer construction method involved in the first embodiment of the present invention is a leading edge protective layer construction method for constructing a protective layer composed of multiple path layers on the leading edge of a wind turbine blade body 5a formed by FRP, wherein, when n is set to a natural number, the steps of the path layer constructed area Ra where the nth path layer has been constructed and the path layer unconstructed area Rb where the nth path layer has not been constructed and is adjacent to the path layer constructed area are measured.

[0098] According to the leading edge protective layer construction method involved in this method, since the height difference between the path layer constructed area and the path layer unconstructed area is measured, for example, when the path layer unconstructed area is an area where the path layer is not formed, the layer thickness of the protective layer of the nth path layer can be measured, and when the path layer unconstructed area is an area where the n-1th path layer is formed, the layer thickness of the nth path layer can be measured.

[0099] In the leading edge protective layer construction method involved in the second embodiment of the present invention, in the first embodiment, the unconstructed area of ​​the path layer is an area where the path layer is not formed, and the step between the constructed area of ​​the path layer where the nth path layer has been constructed and the unconstructed area of ​​the path layer is measured, and the layer thickness of the protective layer at the stage where the nth construction has been completed is used as the layer thickness of the protective layer. Based on the layer thickness of the protective layer at the stage where the nth construction has been completed and the layer thickness of the protective layer at the stage where the n-1th construction has been completed, the layer thickness of the nth path layer is calculated.

[0100] According to this embodiment of the leading edge protective layer construction method, if the unconstructed path layer area is an area where no path layer has been formed, the height difference between the path layer construction area where the nth path layer was applied and the unconstructed path layer area can be measured as the thickness of the protective layer after the nth construction has been completed. Furthermore, the thickness of the nth path layer can be calculated based on the thickness of the protective layer at the stage where the nth construction has been completed and the thickness of the protective layer at the stage where the n-1th construction has been completed.

[0101] In the leading edge protective layer construction method involved in the third embodiment of the present invention, in the first embodiment, the unconstructed area of ​​the path layer is an area where the n-1th path layer is formed, and the step between the constructed area of ​​the path layer where the nth path layer has been constructed and the unconstructed area of ​​the path layer is measured as the layer thickness of the nth path layer. Based on the thickness of each layer from the 1st path layer to the nth path layer, the layer thickness of the protective layer at the stage of completing the nth construction is calculated.

[0102] According to the leading edge protective layer construction method of this embodiment, if the unconstructed path layer area is the area where the (n-1)th path layer has been formed, the step between the constructed path layer area where the nth path layer has been constructed and the unconstructed path layer area can be measured to provide the layer thickness of the nth path layer. Furthermore, based on the thicknesses of the layers from the first to the nth path layers, the layer thickness of the protective layer at the stage where the nth construction has been completed can be calculated.

[0103] The leading edge protection layer construction method according to a fourth aspect of the present invention, in any one of the first to third aspects, specifies an area where the thickness of the protection layer is less than a reference layer thickness value as a reconstructed area requiring additional construction.

[0104] According to the leading edge protective layer construction method involved in this method, the area where the layer thickness of the protective layer becomes less than the reference layer thickness value is determined as a re-construction area requiring additional construction. Therefore, by performing construction again in the re-construction area, the layer thickness of the protective layer in the re-construction area can be set to be greater than the reference layer thickness value.

[0105] The leading edge protection layer construction method involved in the fifth embodiment of the present invention measures the temperature of the nth path layer in any one of the first to fourth embodiments, and when the measured temperature is above the reference temperature value, improves the cooling capacity of the nth path layer after the temperature is measured.

[0106] According to the leading edge protection layer construction method of this embodiment, when the measured temperature is above the reference temperature, the cooling capacity of the nth path layer after the temperature is measured is increased, thereby reliably cooling the high-temperature range of the nth path layer. When forming the n+1th path layer on the nth path layer, if the temperature of the nth path layer is high, the n+1th path layer is difficult to form. However, by reliably cooling the high-temperature range of the nth path layer, the likelihood of this phenomenon occurring can be reduced.

[0107] The construction device involved in the sixth embodiment of the present invention is a construction device 100 for constructing a protective layer on the leading edge of a wind turbine blade body formed of FRP, which comprises: a spray gun 110 for spraying a flame 111 containing a construction material 112; and a displacement meter 120 for measuring the height of a step. When n is set to a natural number, the displacement meter measures the steps of a constructed area of ​​the path layer where the nth path layer has been constructed and a non-constructed area of ​​the path layer where the nth path layer has not been constructed and is adjacent to the constructed area of ​​the path layer.

[0108] The construction device involved in the 7th embodiment of the present invention, in the 6th embodiment, comprises: a thermometer 130, which measures the temperature of the nth path layer; a cooling unit 140, which cools the nth path layer after the temperature is measured by the thermometer; and a control unit 160, which increases the cooling capacity based on the cooling unit when the measured temperature is above the reference temperature value.

[0109] In the construction device according to the eighth aspect of the present invention, in the seventh aspect, the thermometer is arranged so that the temperature measurement range 131 does not overlap with the flame range 113 of the flame ejected from the spray gun.

[0110] According to the construction device of this embodiment, the thermometer is arranged so that the temperature measurement range does not overlap with the flame range of the flame. Therefore, the thermal influence of the flame on the temperature measurement range can be reduced.

[0111] Explanation of symbols

[0112] 1- Wind turbine, 3- Tower, 4- Rotor head, 5- Wind turbine blade, 5a- Wind turbine blade body, 6- Nacelle, 10- Blade root, 12- Blade tip (tip), 12a- Tip, 14- Blade-shaped portion, 16- Leading edge, 18- Trailing edge, 20- Ventral side, 22- Dorsal side, 30- Protective layer, 31- 1st path layer, 32- 2nd path layer, 33- 3rd path layer, 34- 4th path layer, 30N- Nth path layer, 100 -Construction device, 110-Spray gun, 111-Flame, 112-Construction material, 113-Flame range, 120-Displacement meter, 121-Displacement measurement range, 130-Thermometer, 131-Temperature measurement range, 140-Cooling unit, 160-Control unit, B-Setting surface, D1-Blade length direction, D2-Blade chord direction (cord direction), L1-1st column, L2-2nd column, Ra-Path layer constructed area, Rb-Path layer unconstructed area.

Claims

1. A method for constructing a leading edge protective layer, comprising constructing a protective layer composed of a plurality of path layers on the leading edge of a wind turbine blade body formed of FRP, wherein: When n is set to a natural number, The steps between a route layer constructed area where the nth route layer has been constructed and an unconstructed route layer area where the nth route layer has not been constructed and adjacent to the route layer constructed area are measured.

2. The method for constructing a leading edge protective layer according to claim 1, wherein: The path layer unconstructed area is an area where the path layer is not formed. The step between the path layer constructed area and the path layer unconstructed area where the n-th path layer has been constructed is measured as the layer thickness of the protective layer at the stage where the n-th construction is completed. The thickness of the n-th path layer is calculated based on the thickness of the protective layer at the stage where the n-th construction is completed and the thickness of the protective layer at the stage where the (n-1)-th construction is completed.

3. The method for constructing a leading edge protective layer according to claim 1, wherein: The unconstructed area of ​​the path layer is the area where the n-1th path layer is formed. measuring a step between the path layer constructed area and the path layer unconstructed area where the nth path layer has been constructed as the layer thickness of the nth path layer, The layer thickness of the protective layer at the stage where the n-th construction is completed is calculated based on the thicknesses of the layers from the first path layer to the n-th path layer.

4. The method for constructing a leading edge protective layer according to claim 1, wherein: The area where the layer thickness of the protective layer is less than the reference layer thickness value is determined as a re-construction area requiring additional construction.

5. The method for constructing a leading edge protective layer according to claim 1, wherein: measuring the temperature of the nth path layer, When the measured temperature is equal to or higher than the reference temperature value, the cooling capacity for the n-th path layer after the temperature is measured is increased.

6. A leading edge protective layer construction device for constructing a protective layer on the leading edge of a wind turbine blade body formed of FRP, the leading edge protective layer construction device comprising: Spray guns, which spray a flame containing the construction material; and Displacement meter, measuring the height of the step, When n is set to a natural number, The displacement meter measures a step between a path layer constructed area where the nth path layer is constructed and a path layer unconstructed area where the nth path layer is not constructed and adjacent to the path layer constructed area.

7. The leading edge protection layer construction device according to claim 6, comprising: a thermometer, for measuring the temperature of the nth path layer; a cooling unit that cools the n-th path layer after the temperature is measured by the thermometer; and Control Department, The control unit increases the cooling capacity of the cooling unit when the measured temperature is equal to or higher than a reference temperature value.

8. The leading edge protection layer construction device according to claim 7, wherein: The thermometer is arranged so that a temperature measurement range does not overlap with a flame range of the flame ejected from the spray gun.

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