Blade demolding heat dissipation tool and blade demolding heat dissipation method

Abstract

The invention provides a blade demolding heat dissipation tool and a blade demolding heat dissipation method for a wind generating set. The blade demolding heat dissipation tool comprises a supporting piece and a heat dissipation piece, wherein the supporting piece is used for supporting a blade tip section of a blade to be separated from a leeside mold after a windward side mold of the blade is opened; and the heat circulation assembly is used for forming a heat circulation loop between the inner cavity of the blade and the outside of the blade so as to dissipate heat in the inner cavity to the outside through a heat dissipation medium. According to the blade demolding heat dissipation tool, the cooling rate of the blade can be increased, and therefore the blade can be prevented from being damaged due to high temperature during demolding.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power, and in particular to a blade demoulding and heat dissipation tool and a blade demoulding and heat dissipation method for a wind power generator set. Background Art

[0002] In order to effectively utilize wind energy and achieve maximum power efficiency, the blades of wind turbines (or turbines) have gradually become larger.

[0003] However, as the blades become larger, the temperature of the blades may still be very high during demoulding, so the blades are easily damaged. Therefore, it is expected that the blade temperature is lower than 50°C during demoulding to avoid damage to the blades due to high temperature. At present, the main cooling measure before blade demoulding is natural cooling for 2.5 hours, but the temperature of the blades after cooling is still higher than 50°C, which poses a risk of damage during high-temperature demoulding. Summary of the invention

[0004] The object of the present invention is to provide a blade demoulding heat dissipation tooling and a blade demoulding heat dissipation method for a wind turbine generator set, wherein the blade demoulding heat dissipation tooling and the blade demoulding heat dissipation method can increase the cooling rate of the blade, thereby preventing the blade from being damaged due to high temperature during demoulding.

[0005] According to one aspect of the present invention, a blade demoulding and heat dissipation tooling for a wind turbine generator set is proposed, the blade demoulding and heat dissipation tooling comprising: a support member for supporting the tip section of the blade to separate from the leeward side mold after the windward side mold of the blade is opened; and a heat circulation component for forming a heat circulation path between the inner cavity of the blade and the outside of the blade to dissipate the heat in the inner cavity to the outside through a heat dissipation medium.

[0006] Preferably, the heat cycle assembly may include a first blowing device, which is arranged in the inner cavity and blows air toward a blade root of the blade.

[0007] Preferably, the thermal cycle assembly may further include a refrigeration unit, which is arranged at the air outlet of the first blowing device or integrated with the first blowing device to reduce the temperature of the gas blown out by the first blowing device.

[0008] Preferably, the first blowing device may include a suction part and a blowing part, and is arranged so that the suction part is directed toward the blade tip area of ​​the inner cavity to absorb hot air in the blade tip area, and the blowing part is directed toward the blade root to blow toward the blade root.

[0009] Preferably, the first blowing device may be further arranged to blow air toward the leeward side of the blade by the blowing portion closely adhering to the web of the blade.

[0010] Preferably, the thermal cycle component may include: a first blowing device, arranged outside the root of the blade; and a pipe, a first end of the pipe is connected to the air outlet of the first blowing device, and the pipe is arranged to extend into the inner cavity to transport the gas blown by the first blowing device into the inner cavity.

[0011] Preferably, the duct may be further arranged to extend into a blade tip region of the inner cavity, and a second end of the duct opposite to the first end is provided with a curved portion to turn the gas from the blade tip region to flow toward the blade root.

[0012] Preferably, the thermal cycle assembly may further include a refrigeration unit, which is arranged at the air outlet of the first blowing device or integrated with the first blowing device to reduce the temperature of the gas blown out by the first blowing device.

[0013] Preferably, a second end of the pipe opposite to the first end may be arranged in a lower region of the inner cavity, so that the gas discharged from the second end starts to flow from the lower region.

[0014] Preferably, the first blowing device may include a leading edge blowing device and a trailing edge blowing device, the pipe includes a first pipe connected to the leading edge blowing device and a second pipe connected to the trailing edge blowing device, and the distance that the first pipe extends to the leading edge area of ​​the inner cavity is greater than the distance that the second pipe extends to the trailing edge area of ​​the inner cavity.

[0015] Preferably, the duct may extend into a leading edge region of the inner cavity, and the heat cycle assembly may further include a second blowing device, which is arranged in a trailing edge region of the cavity and blows air toward the blade root.

[0016] Preferably, a second end of the duct opposite to the first end may be closer to the tip of the blade than the second blowing device.

[0017] Preferably, the thermal cycle assembly may include a sealing portion, which is used to seal the inner cavity at a position close to the blade root and has a slot, and the pipe passes through the slot so that the gas transported from the pipe flows through the leading edge area, the tip web cavity and the trailing edge area of ​​the blade.

[0018] Preferably, the thermal cycle assembly may include a humidifying unit, which is arranged downstream of a second end of the duct opposite to the first end, to humidify the wind blown out by the first blowing device.

[0019] Preferably, the heat dissipation tooling may further include an external air blowing device, and the external air blowing device is used to be arranged outside the blade tip section to blow air toward the blade tip section.

[0020] According to another aspect of the present invention, a blade demoulding heat dissipation method is provided, wherein the blade demoulding heat dissipation method utilizes the blade demoulding heat dissipation tooling as described above to dissipate heat from the blade.

[0021] Preferably, during the process of dissipating heat from the blade, the root of the blade can be kept in an open state.

[0022] The blade demoulding heat dissipation tooling and blade demoulding heat dissipation method for wind turbines according to the present invention can improve the cooling rate of the blade by separating the tip section of the blade from the leeward side mold and utilizing the heat circulation path of the heat dissipation medium to dissipate the heat in the inner cavity C to the outside, thereby preventing the blade from being damaged due to high temperature during demoulding, thereby improving the molding efficiency of the blade and improving the quality and reliability of the blade.

[0023] In addition, the blade demoulding heat dissipation tooling and the blade demoulding heat dissipation method according to the present invention can further increase the cooling rate of the blade by using external air blowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and other aspects, features and advantages of the present invention will become clear and more easily understood through the following detailed description of exemplary embodiments in conjunction with the accompanying drawings, in which:

[0025] Figure 1 is a schematic side view showing the arrangement of the blade demoulding and heat dissipation tooling in the blade according to the first embodiment of the present invention,

[0026] Figure 2 is a schematic top view showing the arrangement of the blade demoulding and heat dissipation tooling in the blade according to the first embodiment of the present invention,

[0027] Figure 3 is a schematic top view showing the arrangement of a blade demoulding and heat dissipation tooling in a blade according to a modified example of the first embodiment of the present invention,

[0028] Figure 4 is a schematic top view showing the arrangement of the blade demoulding and heat dissipation tooling relative to the blade according to the second embodiment of the present invention,

[0029] Figure 5 is a schematic side view showing the arrangement of the blade demoulding and heat dissipation tooling relative to the blade according to the second embodiment of the present invention,

[0030] Figure 6 is a schematic top view showing the arrangement of a blade demoulding and heat dissipation tooling relative to a blade according to a modified example of the second embodiment of the present invention,

[0031] Figure 7is a schematic top view showing the arrangement of the blade demoulding and heat dissipation tooling relative to the blade according to the third embodiment of the present invention,

[0032] Figure 8 1 is a schematic top view showing the arrangement of the blade demoulding and heat dissipation tooling relative to the blade 10 according to the fourth embodiment of the present invention,

[0033] Fig.9A and Fig. 9B It is shown Figure 8 A schematic diagram of the structure of the sealing portion in FIG. 1 , and

[0034] Fig.10 1 is a schematic top view showing the arrangement of a blade demoulding and heat dissipation tooling relative to a blade 10 according to a fifth embodiment of the present invention.

[0035] Figure Number:

[0036] 10-blade; 110-web; 110L-leading edge web; 110T-trailing edge web; 111-leading edge area; 112-trailing edge area; 120-blade tip; 130-blade root; 20-support; 30-first blowing device; 301-air suction part; 302-blowing part; 310-leading edge blowing device; 320-trailing edge blowing device; 40-external blowing device; 50-duct; 510-first duct; 520-second duct; 60-sealing part; 70-humidifying part; C-inner cavity; G-slot; H-height; LE-leading edge; TE-trailing edge; PS-windward side; SS-leeward side; S-bending part. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical concept of the present invention, the specific embodiments of the present invention will be described clearly, completely and in detail in conjunction with the accompanying drawings. It should be clear that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. For those of ordinary skill in the art, the specific meanings of the terms used in the present invention can be understood according to specific circumstances.

[0039] It will be understood that although terms such as "first", "second", etc. may be used herein to describe various elements, these elements will not be limited by these terms. Rather, these terms are only used to distinguish one element from another element. Therefore, without departing from the teachings of the exemplary embodiments described herein, the first element referred to in the exemplary embodiments may also be referred to as the second element.

[0040] For ease of description, the terms “inside”, “outside”, “upper” and “lower” referred to below are consistent with the inside, outside, upper and lower directions of the drawings themselves, but do not limit the structure of the present invention.

[0041] In addition, throughout the specification, when an element is described as being “disposed on,” “connected to,” or “coupled to” another element, the element may be directly “disposed on,” “connected to,” or “coupled to” the other element, or one or more other elements may be interposed therebetween.

[0042] In order to clearly describe the present invention, parts or portions that are not related to the description are omitted, and the same or similar constituent elements are represented by the same reference numerals throughout the specification. In addition, the accompanying drawings are provided only to allow easy understanding of the embodiments disclosed in this specification, and should not be interpreted as limiting the spirit disclosed in this specification, and it should be understood that the present invention includes all changes, equivalents and alternatives that do not depart from the scope and spirit of the present invention. In addition, in the accompanying drawings, for ease of description, the size and shape of each element are arbitrarily shown, and the present invention is not necessarily limited to those sizes and shapes shown in the accompanying drawings.

[0043] The present invention aims to provide a blade demoulding heat dissipation tool and a blade demoulding cooling method which can improve the blade cooling rate to avoid damage to the blade due to high temperature during demoulding.

[0044] In a wind turbine generator set, the performance test temperature range of the fiberglass reinforced plastic of the blade is -40℃-50℃, and the operating temperature of the blade is also -40℃-50℃. To ensure the normal performance of the blade, it is necessary to ensure that the blade temperature is between -40℃-50℃. If the temperature of the blade is greater than 50℃, the blade will become soft. If the blade becomes soft when demolding after curing, the blade is easily damaged. In the prior art, the blade root and blade tip are usually used to demold the blade of the wind turbine generator set. In this case, the blade can only be cooled naturally to dissipate heat, but there are problems such as long cooling time and slow cooling efficiency. In particular, the temperature of the web bonding area of ​​the blade after natural cooling will still be greater than 50℃. For example, the temperature of the main beam edge of the blade is 55.8℃ after natural cooling for 7h before demolding, the temperature of the main beam edge of the blade is 54~59℃ after natural cooling for 5h before demolding, and the temperature of the main beam edge of the blade is 53~55℃ after natural cooling for 2.5h before demolding. Since the temperature of the blades is still high after natural cooling, there is a risk of damage to the blades during demoulding, and too long a period of natural cooling will also affect the molding efficiency of the blades.

[0045] The object of the present invention is to overcome the above-mentioned disadvantages. Figures 1 to 10 The blade demoulding heat dissipation tooling and the blade demoulding cooling method according to various embodiments of the present invention are described in detail.

[0046] Figure 1 is a schematic side view showing the arrangement of the blade demoulding and heat dissipation tooling in the blade according to the first embodiment of the present invention, Figure 2 It is a schematic top view showing the arrangement of the blade demoulding and heat dissipation tooling in the blade according to the first embodiment of the present invention.

[0047] The blade demolding and heat dissipation tooling for a wind turbine generator set according to the present application may include: a support member 20, used to support the tip section of the blade 10 to separate from the leeward side mold after opening the windward side mold of the blade 10; and a thermal circulation component, used to form a thermal circulation path between the inner cavity C of the blade 10 and the outside of the blade 10, so as to dissipate the heat in the inner cavity C to the outside through a heat dissipation medium.

[0048] Specifically, Figure 1 and Figure 2 As shown, the blade 10 may include a windward surface PS, a leeward surface SS, a leading edge LE and a trailing edge TE. In addition, the blade 10 may further include a web 110 , and an inner cavity C of the blade 10 may be divided into a leading edge region 111 and a trailing edge region 112 based on the web 110 .

[0049] The support member 20 may be an airbag, a bracket, etc., but is not limited thereto. Preferably, the support member 20 is a flexible support member (such as an airbag, etc.) to prevent damage to the blade 10 while supporting the blade 10. Alternatively, the support member 20 may be a rigid support member with a flexible contact portion.

[0050] In the process of dissipating heat from the blade 10, after the material used to manufacture the blade 10 is solidified, the windward side mold may be opened first, and then the tip section of the blade 10 may be supported by the support member 20 so that the tip section of the blade 10 may be separated from the leeward side mold. Usually, when the windward side mold is opened, the blade 10 is still in contact with the leeward side mold. Since the temperature of the leeward side mold is usually a high temperature of 75°C to 80°C, the blade 10 will continue to be heated, causing the blade 10 to cool down slowly. In this embodiment, after the tip section of the blade 10 is lifted and separated from the leeward side mold, the leeward side mold may be prevented from heating the tip section, thereby improving the cooling efficiency of the blade 10.

[0051] Here, the tip section of the blade 10 refers to the portion between the suspension point of the blade 10 and the blade tip 120. As an example, the suspension point may be located 50 m away from the root of the blade 10, but is not limited thereto. The tip section here may be determined based on factors such as the center of gravity, length, and shape of the blade 10. As an example, the support 20 may be used to support the tip section to a height H of 5 mm to 200 mm. The main beam is an important component of the blade 10, and therefore it is preferred to support the main beam area of ​​the blade 10 to avoid damage to the main beam area of ​​the blade 10. That is to say, according to the present embodiment, the tip section preferably includes the main beam area of ​​the blade 10.

[0052] In addition, if Figure 1 and Figure 2 As shown, in this embodiment, the heat cycle assembly may include a first blowing device 30. The first blowing device 30 may be arranged in the inner cavity C, and may blow air toward the blade root 130 of the blade 10.

[0053] In this embodiment, the first blowing device 30 may be arranged in the blade tip section region in the inner cavity C, and there may be a plurality of the first blowing devices 30. The first blowing device 30 may be any type of blowing device, and as an example, the first blowing device 30 may be a turbo blower, a fan, etc., but is not limited thereto.

[0054] In the inner cavity C, one or more first blowing devices 30 may be arranged at the leading edge region 111 and the trailing edge region 112 of the blade 10. In other words, Figure 2 As shown, the first blowing device 30 may include a leading edge blowing device 310 and a trailing edge blowing device 320 .

[0055] Although not shown, preferably, the thermal cycle assembly may further include a refrigeration unit. The refrigeration unit may be arranged at the air outlet of the first blowing device 30 or integrated with the first blowing device 30 to reduce the temperature of the gas (i.e., the blown wind) blown by the first blowing device 30. Therefore, the cooling rate of the blade 10 can be increased.

[0056] As described above, in the prior art, when the blades of the wind turbine generator set are demoulded, the blades are cooled by natural cooling. However, in this case, it usually takes a long time (for example, about 6-7 hours) for the blades to drop below 50°C. In contrast, by using the blade demoulding heat dissipation tooling according to this embodiment, the blade 10 can be cooled to below 50°C in a shorter time (about 2.5 hours), thereby saving cooling time (for example, saving about 3.5-4 hours) and improving the molding efficiency of the blade 10 (for example, the molding efficiency is improved by 9%-18%).

[0057] In addition, the use of the blade demoulding heat dissipation tooling according to this embodiment can effectively prevent the blade 10 from being damaged due to high temperature during demoulding, thereby improving the quality and reliability of the blade 10.

[0058] Figure 3 1 is a schematic top view showing the arrangement of a blade demoulding and heat dissipation tool in a blade according to a modified example of the first embodiment of the present invention.

[0059] like Figure 3 As shown, the first blowing device 30 may include a suction part 301 and a blowing part 302, and may be arranged so that the suction part 301 is directed toward the blade tip area of ​​the inner cavity C to absorb hot air in the blade tip area, and the blowing part 302 is directed toward the blade root 130 to blow air toward the blade root 130.

[0060] For example, the first blowing device 30 may include a propeller, and may be divided into a suction portion 301 and a blowing portion 302 by the rotating propeller, so that the back side (ie, Figure 3 The air is sucked from the front side of the first blowing device 30 (i.e., Figure 3 Therefore, an air duct can be formed between the front and back sides of the first blowing device 30 to promote air circulation and take away the heat of the blade 10.

[0061] Although not shown, the first blowing device 30 can preferably blow air toward the leeward surface SS of the blade 10 through the blowing portion 302 close to the web 110 of the blade 10, thereby accelerating the heat dissipation of the leeward surface SS.

[0062] Therefore, by using the blade demoulding and heat dissipation tooling of this variant example, air circulation can be accelerated and the cooling rate of the blade 10 can be increased.

[0063] Figure 4 is a schematic top view showing the arrangement of the blade demoulding and heat dissipation tooling relative to the blade according to the second embodiment of the present invention, Figure 5 1 is a schematic side view showing the arrangement of the blade demoulding and heat dissipation tooling relative to the blade according to the second embodiment of the present invention.

[0064] The blade demoulding heat dissipation tooling according to the second embodiment is different from the blade demoulding heat dissipation tooling according to the first embodiment in that the first blowing device 30 is arranged outside the blade 10, and the thermal cycle assembly further includes a duct 50 communicated with the first blowing device 30. Therefore, when describing the second embodiment, only the elements that are different from those in the first embodiment are described. Regarding other elements in the second embodiment that are the same as those in the first embodiment, the description of the first embodiment can be applied in the same manner.

[0065] like Figure 4 As shown, the first blowing device 30 may be arranged outside the blade 10. In addition, the first end (i.e., the left end) of the duct 50 may be connected to the air outlet of the first blowing device 30. The duct 50 may be arranged to extend into the inner cavity C to deliver the gas blown by the first blowing device 30 into the inner cavity C.

[0066] In this embodiment, when the first blowing device 30 blows air, it absorbs the cold air outside the blade 10 and transports the cold air flow to the inner cavity C of the blade 10 through the pipe 50, so as to utilize the cold air flow to blow out the hot air in the inner cavity C of the blade 10, thereby achieving the effect of lowering the temperature of the blade 10.

[0067] The position of the duct 50 in the inner cavity C is not particularly limited, as long as it can transport the heat dissipation medium (such as air, etc.). Preferably, the duct 50 can extend into the tip section area of ​​the inner cavity C close to the blade tip 120 (for example, the area 50m away from the blade root) to blow air to the tip section area, thereby accelerating the cooling of the tip section.

[0068] Also preferably, if Figure 5 As shown, the second end (i.e., the right end) of the duct 50 opposite to the first end (i.e., the left end) can be arranged in the lower area of ​​the inner cavity C, so that the gas discharged from the second end starts to flow from the lower area. In this case, since the density of hot air is less than that of cold air, the cold air transported by the duct 50 flows downward, which can facilitate the hot air in the inner cavity C to flow out of the blade 10 from above the inner cavity C, thereby taking away the heat of the blade 10.

[0069] In addition, as in the first embodiment, in this embodiment, the first blowing device 30 may also include a leading edge blowing device 310 and a trailing edge blowing device 320. Accordingly, the duct 50 may include a first duct 510 connected to the leading edge blowing device 310 and a second duct 520 connected to the trailing edge blowing device 320.

[0070] The distances to which the first duct 510 and the second duct 520 extend to the inner cavity C can be adjusted to be the same or different as needed. Since the spatial size of the trailing edge region 112 is relatively large, it is preferred that the distance to which the first duct 510 extends to the leading edge region 111 of the inner cavity C is greater than the distance to which the second duct 520 extends to the trailing edge region 112 of the inner cavity C. For example, the distance to which the first duct 510 extends to the leading edge region 111 of the inner cavity C may be approximately 50 m, while the distance to which the second duct 520 extends to the trailing edge region 112 of the inner cavity C may be approximately 20 m. In this case, since the cold air delivered from the second duct 520 can flow to most areas in the trailing edge region 112, even if the internal space of the trailing edge region 112 is relatively large, the cooling effect can be improved. In addition, the cold air delivered from the first duct 510 can ensure cooling of the blade tip section on the one hand, and can flow into the trailing edge region 112 on the other hand to improve cooling of the trailing edge TE.

[0071] Figure 6 1 is a schematic top view showing the arrangement of a blade demoulding and heat dissipation tool relative to a blade according to a modified example of the second embodiment of the present invention.

[0072] like Figure 6 As shown, the duct 50 may be further arranged to extend into the tip section region of the inner cavity C, and a second end of the duct 50 is provided with a curved portion S to turn the gas from the tip section region to flow toward the blade root 130 .

[0073] There is no particular limitation on the bending direction of the bent portion S. As an example, the bent portion S may be bent toward the trailing edge TE of the blade 10. As another example, the bent portion S may be bent toward the windward surface PS.

[0074] Figure 7 1 is a schematic top view showing the arrangement of a blade demoulding and heat dissipation tooling relative to a blade 10 according to a third embodiment of the present invention.

[0075] The blade demoulding heat dissipation tooling according to the third embodiment is different from the blade demoulding heat dissipation tooling according to the first and second embodiments in that one first blowing device 30 is arranged outside the blade 10, and another first blowing device 30 is arranged inside the blade 10. Therefore, when describing the third embodiment, only the elements that are different from those in the first and second embodiments are described. Regarding other elements in the third embodiment that are the same as those in the first and second embodiments, the description of the first and second embodiments can be applied in the same manner.

[0076] Specifically, in this embodiment, the leading edge blowing device 310 may be arranged outside the blade 10, and deliver air (i.e., blow air) toward the leading edge region 111 of the inner cavity C of the blade 10 through the duct 50. The trailing edge blowing device 320 may be arranged in the trailing edge region 112 of the inner cavity C, and blow air toward the blade root 130.

[0077] Preferably, the second end of the duct 50 may be closer to the blade tip 120 of the blade 10 than the trailing edge blowing device 320. For example, the distance that the duct 50 extends to the leading edge region 111 of the inner cavity C may be about 50 m, and the trailing edge blowing device 320 may be arranged in the trailing edge region 112 at a position about 20 m away from the blade root 130. In this case, the heat dissipation effect of the trailing edge region 112 can be improved while ensuring the heat dissipation of the blade tip section.

[0078] Figure 8 1 is a schematic top view showing the arrangement of the blade demoulding and heat dissipation tooling relative to the blade 10 according to the fourth embodiment of the present invention, Fig.9A and Fig. 9B It is shown Figure 8 Schematic diagram of the structure of the sealing part.

[0079] The difference between the blade demoulding heat dissipation tooling according to the fourth embodiment and the blade demoulding heat dissipation tooling according to the third embodiment is that the trailing edge blowing device 320 is omitted, and the thermal cycle assembly further includes a sealing portion 60. Therefore, when describing the fourth embodiment, only the elements that are different from those in the third embodiment are described. Regarding other elements in the fourth embodiment that are the same as those in the third embodiment, the description of the third embodiment can be applied in the same manner.

[0080] like Figure 8 As shown, the sealing portion 60 may be located near the blade root 130 to seal the inner cavity C to reduce the problem of gas backflow. Fig.9A As shown, the sealing portion 60 may have a slot G through which the duct 50 can pass, so as to facilitate air flow. Fig. 9B As shown, the area of ​​the slot G can be increased to further promote air flow.

[0081] In the inner cavity C of the blade 10, at the blade tip 120, there is a tip cavity that communicates the leading edge region 111 and the trailing edge region 112. Therefore, gas can flow through the leading edge region 111, the tip cavity, and the trailing edge region 112 of the blade 10.

[0082] Specifically, in this embodiment, the sealing portion 60 seals the leading edge region 111 at a position close to the blade root 130, and the duct 50 can pass through the slot G, and the air finally delivered can form a heat circulation path of the leading edge region 111→blade tip cavity→trailing edge region 112 in the inner cavity C. Therefore, the cold air blown into the leading edge region 111 of the blade 10 can discharge the hot air of the inner cavity C of the blade 10, thereby increasing the cooling rate of the blade 10.

[0083] In addition, if Figure 8 As shown, the web 110 can be divided into a leading edge web 110L and a trailing edge web 110T, and an inter-plate cavity is formed between the leading edge web 110L and the trailing edge web 110T. Therefore, after the cold air transported by the duct 50 enters the leading edge region 111, a portion of the air can flow into the inter-plate cavity through the blade tip cavity, and then flow out of the blade 10, thereby taking out the hot air between the leading edge web 110L and the trailing edge web 110T, and cooling the leading edge web 110L and the trailing edge web 110T of the blade 10. In addition, after the cold air transported by the duct 50 enters the leading edge region 111, another portion of the air can enter the trailing edge region 112 of the blade 10 through the blade tip 120 cavity, thereby discharging the hot air inside the blade 10 from the trailing edge TE of the blade 10, and cooling the trailing edge TE of the blade 10.

[0084] In this embodiment, due to the presence of the sealing portion 60 , the problem of gas backflow can be reduced, so that most of the gas can pass through the heat circulation path, thereby increasing the cooling rate of the blade 10 .

[0085] Fig.10 1 is a schematic top view showing the arrangement of a blade demoulding and heat dissipation tooling relative to a blade 10 according to a fifth embodiment of the present invention.

[0086] The blade demoulding heat dissipation tooling according to the fifth embodiment may differ from the blade demoulding heat dissipation tooling according to the fourth embodiment in that the thermal cycle assembly further includes a humidifying unit 70. Therefore, when describing the fifth embodiment, only the elements that are different from those in the fourth embodiment are described. Regarding other elements in the fifth embodiment that are the same as those in the fourth embodiment, the description of the fourth embodiment can be applied in the same manner.

[0087] like Fig.10As shown, the humidifier 70 can be arranged downstream of the second end of the pipe 50 to humidify the wind blown by the first blowing device 30. Specifically, the humidifier 70 can be a simple water supply device, atomizing device, etc., but is not limited thereto. For example, the humidifier 70 can provide other types of coolants.

[0088] In this embodiment, the humidifying unit 70 can cool down the air entering the leading edge area 111 , thereby increasing the rate of cooling the blade 10 through the heat circulation path.

[0089] Although some drawings are not shown, in any of the above embodiments (for example, Figure 4 and Figure 6 In the embodiment shown in the figure), the blade demoulding and heat dissipation tooling may also include an external blowing device 40, which may be arranged on the outside of the blade 10 to blow air from the outside to cool the blade 10. Preferably, the external blowing device 40 may be arranged on the outside of the blade tip segment to blow air toward the blade tip segment. Specifically, the external blowing device 40 may be made to blow air toward at least one of the leeward side SS and the windward side PS of the blade tip segment. Therefore, the cooling of the blade tip segment can be accelerated. Optionally, the external blowing device 40 may be arranged at other positions to blow air toward other areas of the blade 10. It should be known that the various components of the thermal cycle assembly may also be applied to the external blowing device 40, and certain adjustments may be made as needed.

[0090] Hereinafter, a method for demoulding and cooling the blade 10 using the above blade demoulding and cooling tooling will be described.

[0091] First, the windward mold of the blade 10 is opened. Then, the tip section of the blade 10 is supported by the support member 20 so that the tip section is separated from the leeward mold by a certain distance. After that, the components of the thermal cycle assembly are arranged in corresponding positions and each component is started to perform a blowing and cooling treatment on the blade 10. As needed, the external blowing device 40 is arranged outside the tip section and started to perform a cooling treatment on the tip section of the blade 10.

[0092] Preferably, the blade root 130 of the blade 10 is in an open state during the heat dissipation process of the blade 10. That is, when the blade 10 is demoulded and cooled, the blade root 130 baffle may not be installed, so that the blade root 130 is in an open heat dissipation state, thereby promoting the cooling of the blade 10.

[0093] As explained above, the blade demoulding heat dissipation tooling and blade demoulding heat dissipation method for wind turbines according to the present invention can improve the cooling rate of the blade by separating the tip section of the blade from the leeward side mold and utilizing the heat circulation path of the heat dissipation medium to dissipate the heat in the inner cavity C to the outside, thereby preventing the blade from being damaged due to high temperature during demoulding, thereby improving the molding efficiency of the blade and improving the quality and reliability of the blade.

[0094] In addition, the blade demoulding heat dissipation tooling and the blade demoulding heat dissipation method according to the present invention can utilize external air blowing to further increase the cooling rate of the blade.

[0095] The specific implementation methods of the present invention are described in detail above. Although some embodiments have been shown and described, those skilled in the art should understand that these embodiments can be combined, modified and improved without departing from the principle and spirit of the present invention whose scope is defined by the claims (for example, different technical features of the present invention can be combined to obtain new technical solutions). These combinations, modifications and improvements should also be within the scope of protection of the present invention.

Claims

1. A blade demoulding and heat dissipation tooling for a wind turbine generator set, characterized in that: The blade demoulding and heat dissipation tooling comprises: A support member (20) for supporting the tip section of the blade (10) to separate from the leeward side mold after the windward side mold of the blade (10) is opened; and A heat circulation component is used to form a heat circulation path between the inner cavity (C) of the blade (10) and the outside of the blade (10) so as to dissipate the heat in the inner cavity (C) to the outside through a heat dissipation medium.

2. The blade demoulding and heat dissipation tooling according to claim 1 is characterized in that: The heat cycle assembly comprises a first blowing device (30), which is arranged in the inner cavity (C) and blows air toward a blade root (130) of the blade (10).

3. The blade demoulding and heat dissipation tooling according to claim 2 is characterized in that: The thermal cycle component further comprises a refrigeration unit, which is arranged at the air outlet of the first blowing device (30) or is integrated with the first blowing device (30) to reduce the temperature of the gas blown out by the first blowing device (30).

4. The blade demoulding and heat dissipation tooling according to claim 2 or 3, characterized in that: The first blowing device (30) comprises a suction part (301) and a blowing part (302), and is arranged so that the suction part (301) is directed toward the blade tip area of ​​the inner cavity (C) to absorb hot air in the blade tip area, and the blowing part (302) is directed toward the blade root (130) to blow air toward the blade root (130).

5. The blade demoulding and heat dissipation tooling according to claim 4 is characterized in that: The first blowing device (30) is further arranged to blow air toward the leeward side (SS) of the blade (10) by closely adhering to the web (110) of the blade (10) through the blowing portion (302).

6. The blade demoulding and heat dissipation tooling according to claim 1, characterized in that: The thermal cycle assembly comprises: A first blowing device (30) is arranged outside the blade root (130) of the blade (10); and A pipe (50), a first end of the pipe (50) is connected to the air outlet of the first blowing device (30), and the pipe (50) is arranged to extend into the inner cavity (C) to transport the gas blown out by the first blowing device (30) into the inner cavity (C).

7. The blade demoulding and heat dissipation tooling according to claim 6, characterized in that: The duct (50) is further arranged to extend into the blade tip region of the inner cavity (C), and a second end of the duct (50) opposite to the first end is provided with a bend (S) to allow gas to flow from the blade tip region to the blade root (130).

8. The blade demoulding and heat dissipation tooling according to claim 6, characterized in that: The thermal cycle component further comprises a refrigeration unit, which is arranged at the air outlet of the first blowing device (30) or is integrated with the first blowing device (30) to reduce the temperature of the gas blown out by the first blowing device (30).

9. The blade demoulding and heat dissipation tooling according to claim 6, characterized in that: A second end of the pipe (50) opposite to the first end is arranged in a lower region of the inner cavity (C), so that the gas discharged from the second end starts to flow from the lower region.

10. The blade demoulding and heat dissipation tooling according to claim 6, characterized in that: The first blowing device (30) comprises a leading edge blowing device (310) and a trailing edge blowing device (320), The duct (50) comprises a first duct (510) connected to the leading edge blowing device (310) and a second duct (520) connected to the trailing edge blowing device (320), wherein the distance that the first duct (510) extends to the leading edge region (111) of the inner cavity (C) is greater than the distance that the second duct (520) extends to the trailing edge region (112) of the inner cavity (C).

11. The blade demoulding and heat dissipation tooling according to claim 6, characterized in that: The conduit (50) extends into the leading edge region (111) of the inner cavity (C), and The heat cycle assembly further includes a second blowing device, which is arranged in a trailing edge region (112) of the inner cavity (C) and blows air toward the blade root (130).

12. The blade demoulding and heat dissipation tooling according to claim 11, characterized in that: A second end of the duct (50) opposite to the first end is closer to the tip (120) of the blade (10) than the second blowing device.

13. The blade demoulding and heat dissipation tooling according to any one of claims 6 to 12, characterized in that: The thermal cycle assembly comprises a sealing portion (60) for sealing the inner cavity (C) at a position close to the blade root (130) and having a slot (G), wherein the pipe (50) passes through the slot (G) so that the gas transported from the pipe (50) flows through the leading edge region (111), the blade tip cavity and the trailing edge region (112) of the blade (10).

14. The blade demoulding and heat dissipation tooling according to claim 12, characterized in that: The thermal cycle assembly comprises a humidifying portion (70) which is arranged downstream of a second end of the duct (50) opposite to the first end to humidify the wind blown out by the first blowing device (30).

15. The blade demoulding and heat dissipation tooling according to claim 1, characterized in that: The blade demoulding and heat dissipation tooling further comprises an external air blowing device (40), wherein the external air blowing device (40) is used to be arranged outside the blade tip section so as to blow air towards the blade tip section.

16. A blade demoulding and heat dissipation method, characterized in that: The blade demoulding and heat dissipation method utilizes the blade demoulding and heat dissipation tooling according to any one of claims 1 to 15 to dissipate heat from the blade (10).

17. The blade demoulding and heat dissipation method according to claim 16, characterized in that: During the process of heat dissipation of the blade (10), the blade root (130) of the blade (10) is placed in an open state.

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