A blade extension component installation method and structure

Abstract

The present invention provides a method and structure for installing a blade extension component, the method comprising the following steps: producing an extension component on site, the extension component comprising an SS surface component, a PS surface component and a component lightning protection cable; assembling and lightning protection treatment of the extension component on site, installing the component lightning protection cable between the SS surface component and the PS surface component, and installing a first lightning protection connection device on the component lightning protection cable; bonding and lightning protection treatment of the base blade at high altitude, installing a second lightning protection connection device on the tip lightning arrester of the base blade; installing the overall assembled extension component on the base blade at high altitude, connecting and fixing the first lightning protection connection device and the second lightning protection connection device through the lightning arrester; and injecting glue and curing at high altitude. The blade extension component installation method and structure of the present invention can be installed as a whole and has higher reliability in terms of withstanding lightning strike strength.

Description

Technical Field

[0001] The present invention relates to the field of wind turbine blade upgrading and reconstruction, and in particular to a blade extension component installation method and structure. Background Art

[0002] At present, there are various efficiency-enhancing technologies in the wind power industry. The most widely used efficiency-enhancing components are: vortex generators (VG), sawtooth (Gurney flaps to increase power and reduce noise), blade tip extensions, blade replacement, and blade tip winglets. The efficiency-enhancing principle of blade tip winglets is as follows: the blade tip often produces a large induced drag, which reduces the starting performance of the blade. Due to the small chord length of the blade tip, the adjustable space is very limited, and the effect of applying the reverse twist angle only through the blade tip is not ideal. Drawing on the experience of solving wingtip vortices on aircraft wings, the installation of winglets similar to aircraft winglets can reorganize the airflow through the blade tip flow field, effectively reduce the induced drag at the blade tip, reduce the energy loss at the blade tip, thereby increasing the power generation of the unit, and also helping to reduce aerodynamic noise.

[0003] The main construction process of blade extension components (blade tip extension, blade tip winglet technology) is as follows: 1) parts production, 2) accessories bonding, 3) SS, PS local assembly, 4) blade tip cutting, 5) bonding surface treatment, 6) lightning protection system connection, 7) SS / PS surface glue bonding, 8) fixture fixing, 9) heating pre-curing, 10) component reinforcement, 11) heating post-curing, 12) overall shaping coating. The installation cycle of a single blade takes at least 16 hours (8 hours of working time per day). The current construction of technical transformation components is labor-intensive and time-consuming. According to the technical transformation of 3 blades for one unit, it takes about 8 days (1 day for wind farm assembly of blade tip extension components, 1 day for platform hanging, debugging, and dismantling, and 6 days for construction).

[0004] In the prior art, the lightning protection system of the original blade and the extended component is connected manually. First, the metal block at the tip of the original blade is cut off, the lightning protection line of the original blade is buckled out, and then the blade and the lightning protection line of the extended component are manually connected. The bonding process of the extended component and the original blade is to manually scrape glue on the SS and PS surfaces respectively, and then the corresponding side components are pasted to the shell surface. This requires that there must be enough space for the extension component to facilitate the workers' operation during the installation process. It is also a key factor that determines that the extension component cannot be fully assembled and installed as a whole, which leads to longer corresponding construction procedures and time. The longer construction time and high-altitude operations result in economic losses to customers and themselves, and increased risks of high-altitude operations.

[0005] The patent application number CN202110681122.1 in the prior art discloses a blade tip sleeve and a wind turbine blade, wherein the blade tip sleeve includes a blade tip cavity, a guide strip and a lightning receptor; a lightning receptor is provided at the front end of the blade tip cavity, the guide strip is connected to the lightning receptor, and the guide strip extends from the front end of the blade tip cavity to the rear end of the blade tip cavity. Although the blade tip sleeve of this patent cancels the placement of the down conductor and replaces it with an external guide strip, the manufacturing process of the blade tip sleeve is simpler and the overall installation of the extended component is realized, but the lightning protection system of the extended component adopts a guide strip placed on the surface of the blade tip sleeve, which is unreliable in terms of bearing the lightning strike intensity, and there is a risk of falling off and failure after an ordinary lightning strike; when a strong lightning strike occurs, the blade shell structure will still be damaged. In addition, manual scraping of glue is required during installation, and the blade tip sleeve is manually put on the blade shell. The force applied on both sides is not easy to control. If one side applies a larger force and the other side applies a smaller force, it is easy to cause different thicknesses of adhesives on both sides and lack of adhesives, which leads to the problem of local bonding cavities and uneven transitions on both sides.

[0006] In view of this, the present invention is proposed. Summary of the invention

[0007] The purpose of the present invention is to propose a method and structure for installing a blade extension component, so as to solve the problem that the lightning protection system of the extension component is unreliable in withstanding the intensity of lightning strikes when the extension component is installed as a whole in the prior art, and there is a risk of falling off and failure after an ordinary lightning strike; when a strong lightning strike occurs, the blade shell structure will still be damaged, and manual glue scraping is required during installation, and the blade tip is manually put onto the blade shell. The force applied on both sides is not easy to control. If a larger force is applied on one side and a smaller force is applied on the other side, it is easy to cause different adhesive thicknesses on both sides and adhesive missing, which in turn leads to the problem of local bonding cavities and uneven transitions on both sides.

[0008] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0009] A method for installing a blade extension component, the method comprising the following steps:

[0010] S1. Produce extension components on site, including SS surface components, PS surface components and component lightning protection cables;

[0011] S2. Assemble and lightning-protect the extended component as a whole on site, install the lightning protection cable of the component between the SS surface component and the PS surface component, and install the first lightning protection connection device on the lightning protection cable of the component;

[0012] S3, perform bonding and lightning protection treatment on the basic blade at high altitude, and install a second lightning protection connection device on the tip lightning arrester of the basic blade;

[0013] S4. Install the assembled extension component on the base blade at high altitude, and connect and fix the first lightning protection connection device and the second lightning protection connection device through a lightning arrester;

[0014] S5. Inject glue and solidify at high altitude.

[0015] The blade extension component installation method and structural steps S1 to S5 described in the present invention are interrelated and inseparable, and play multiple roles. First, the provision of the first lightning protection connection device, the second lightning protection connection device, and the lightning arrester makes it unnecessary to have enough space for the extension component during the installation process, and the blade extension component can be installed as a whole, effectively reducing the workers' high-altitude working time, high-altitude working risks, and unit downtime, improving the installation efficiency of the blade extension component, bringing greater economic benefits to customers, saving construction costs for themselves, and improving quality and efficiency; second, the lightning protection system of the extension component adopts a component lightning protection cable, and the component lightning protection cable is installed at the center of the connection surface between the SS surface component and the PS surface component. The built-in component lightning protection cable is consistent with the specifications of the blade lightning protection cable, and can withstand strong lightning strikes. The blade extension parts have higher reliability in terms of degree and normal operation of the lightning protection system. There is no risk of falling off or failure after an ordinary lightning strike. When a strong lightning strike occurs, the blade shell structure will not be damaged. Third, the glue injection bonding process is adopted. On the one hand, the product quality of the blade extension parts is improved, and the force applied on both sides is easy to control. There are no quality defects such as thickness difference on both sides and lack of adhesive. On the other hand, compared with manual bonding, the glue injection bonding process can combine the three steps of scraping glue, installing and collecting glue into one step, saving time and improving the installation efficiency of the blade extension parts. Fourth, the fatigue and stiffness of the blade extension parts are better, and the service life is longer.

[0016] Further, step S2 comprises the following steps:

[0017] S21. Assemble and protect the extended components on site;

[0018] S22. Post-process the overall assembled extension components on site.

[0019] The setting of step S2, on the one hand, performs overall assembly and lightning protection treatment on site for the extension components, which reduces the difficulty of operation on site compared with high altitude, shortens the operation time and improves work efficiency; on the other hand, the overall installation of the blade extension components is easy to assemble, which effectively reduces the workers' high-altitude working time, high-altitude working risks and unit downtime.

[0020] Further, step S21 includes the following steps:

[0021] S211, first install the component lightning protection cable on one of the SS surface component or the PS surface component;

[0022] S212, connecting one end of the lightning protection connection clip of the first lightning protection connection device to the component lightning protection cable;

[0023] S213, then installing the glue blocking device in the other end of the lightning protection connecting clamp to form a pre-assembled body;

[0024] S214, finally installing the other of the SS surface component or the PS surface component on the pre-assembled body to complete the overall assembly of the extension component.

[0025] Steps S211 to S214 are interrelated and inseparable, and realize the overall assembly and lightning protection of the extension components on site. First, compared with high altitude, the operation difficulty is reduced, the operation time is shortened, and the work efficiency is improved on site; second, it is convenient to post-process the overall assembled extension components on site, so as to facilitate the overall installation of the assembled blade extension components, effectively reducing the workers' high-altitude working time, high-altitude working risks and unit downtime; third, the component lightning protection cable is installed at the center of the connecting surface of the SS surface component and the PS surface component. The built-in component lightning protection cable is consistent with the specifications of the blade lightning protection cable, and has higher reliability in bearing lightning strike intensity and normal operation of the lightning protection system. There is no risk of falling off or failure after ordinary lightning strikes, and when a strong lightning strike occurs, the blade shell structure will not be damaged; fourth, the setting of the glue blocking device can prevent the falling of the injected glue and prevent the adhesive from falling to the front end of the extension component and affecting the operation; on the other hand, it can ensure that the adhesive in the bonding area has no cavities, lack of glue, etc.; it can also play an insulating role.

[0026] Further, step S22 comprises the following steps:

[0027] S221, setting a lightning arrester mounting hole on the extension component, and trying to install the lightning arrester;

[0028] S222, performing insulation treatment on the entire lightning protection system of the extension component;

[0029] S223, providing a glue injection port structure on the extension component;

[0030] S224, reinforcing the front and rear edges of the extension component and applying a full surface shaping coating.

[0031] Steps S221 to S224 are interrelated and inseparable, and post-processing of the overall assembled extension component is carried out on site. On the one hand, the lightning protection system of the extension component is insulated, and it is not easy to discharge when the lightning protection system is in passage or short-circuited, which can effectively avoid the internal temperature of the extension component shell expanding and bursting due to cumulative discharge; on the other hand, time-consuming processes such as leading edge reinforcement of components involved in high-altitude operations and full-surface profiling coating can be completed in advance. Compared with high altitude, the operation difficulty is reduced on site, the operation time is greatly shortened, and the work efficiency is improved, thereby facilitating the overall installation of the assembled blade extension component, effectively reducing the workers' high-altitude working time, high-altitude working risks and unit downtime.

[0032] Further, step S3 comprises the following steps:

[0033] S31, tearing off the release cloth of the bonding area on the base blade;

[0034] S32, providing a base mounting hole on the blade tip lightning arrester, wherein the base mounting hole is used to install a second lightning protection connection device;

[0035] S33, installing and fixing the second lightning protection connection device on the base mounting hole, and using conductive glue to seal it during the fixing process;

[0036] S34. After fixing is completed, the lightning protection system on the base blade is insulated.

[0037] Steps S31 to S34 are interrelated and inseparable, and realize the bonding and lightning protection treatment of the base blades at high altitude. On the one hand, the demoulding cloth in the bonding area on the base blade is torn off to facilitate the subsequent glue injection process, so that the connection between the extension component and the base blade is more secure; on the other hand, the lightning protection system on the base blade is insulated, and it is not easy to discharge when the lightning protection system is open or short-circuited, which can effectively avoid the internal temperature of the base blade shell expanding and bursting due to cumulative discharge.

[0038] Further, step S4 comprises the following steps:

[0039] S41, docking and installing the installation cavity 18 of the extension component 1 and the basic blade 2 together;

[0040] S42, after docking, use conductive glue to lubricate the connection interface between the lightning arrester 33 and the first lightning arrester connection device 31 and the second lightning arrester connection device 32;

[0041] S43, finally installing the lightning arrester 33 in the lightning arrester installation hole 16, and connecting and fixing the first lightning arrester connection device 31 and the second lightning arrester connection device 32 through the lightning arrester 33.

[0042] Steps S41 to S43 are interrelated and inseparable, and realize the installation of the integrally assembled extension component on the basic blade at high altitude. On the one hand, the arrangement of the first lightning protection connection device, the second lightning protection connection device and the lightning arrester makes it unnecessary to have enough space for the extension component during the installation process, and the blade extension component can be installed as a whole, effectively reducing the workers' high-altitude working time, high-altitude working risks and unit downtime, improving the installation efficiency of the blade extension component, bringing greater economic benefits to customers, saving construction costs for themselves, and improving quality and efficiency; on the other hand, after docking, a conductive glue will be used to lubricate the connection interface between the lightning arrester and the first lightning protection connection device and the second lightning protection connection device to realize the path for the transmission of lightning current between the extension component and the basic blade. When a lightning strike occurs, the extension component receives the lightning current, and the current passes through the component lightning protection cable, and is conducted along the first lightning protection connection device, the lightning arrester and the second lightning protection connection device to the blade tip lightning arrester of the basic blade, and then the lightning current is conducted down through the blade lightning protection cable.

[0043] Further, step S5 comprises the following steps:

[0044] S51, first use a glue injection gun to inject adhesive in sequence through the glue injection port structure on the extension component until the entire bonding area is filled;

[0045] S52, after the injection is completed, the tooling is used to fix the excess adhesive, the bonding edge of the extension component and the base blade, and the excess adhesive is subjected to transition and reinforcement treatment and heated for curing;

[0046] S53. Perform repair coating treatment on the surface coating scratches or transition positions in the docking area caused during the installation process.

[0047] Steps S51 to S53 are interrelated and inseparable, and the extension component and the base blade are firmly connected together through glue injection and curing. The glue injection and bonding process can improve the product quality of the blade extension component on the one hand, and the force applied on both sides is easy to control, and there are no quality defects such as thickness difference on both sides and lack of adhesive. On the other hand, compared with manual bonding, the glue injection and bonding process can combine the three steps of scraping glue, installing, and collecting glue into one step, saving time and improving the installation efficiency of the blade extension component.

[0048] According to a second aspect of the present invention, a blade extension component installation structure is proposed, which is installed using any one of the blade extension component installation methods described above. The blade extension component installation structure comprises an extension component and a base blade, the base blade comprises an SS surface blade body, a PS surface blade body and a blade lightning protection cable, a tip lightning rod is arranged on the tip of the base blade, the extension component comprises an SS surface component, a PS surface component and a component lightning protection cable, the component lightning protection cable is installed between the SS surface component and the PS surface component, a first lightning protection connection device is installed on the component lightning protection cable, a second lightning protection connection device is arranged on the blade tip lightning rod, and the first lightning protection connection device and the second lightning protection connection device are connected and fixed by the lightning protection connection device.

[0049] Furthermore, the first lightning protection connection device is configured as a lightning protection connection clamp, one end of the lightning protection connection clamp is connected to the component lightning protection cable, and the other end of the lightning protection connection clamp is connected to the rubber blocking device.

[0050] Furthermore, a mounting cavity is formed between the glue blocking device and the shell of the extension component, the basic blade is mounted in the mounting cavity, and a glue injection adhesive layer is provided between the basic blade and the mounting cavity.

[0051] Compared with the prior art, the blade extension component installation method and structure described in the present invention have the following beneficial effects:

[0052] The present invention discloses a method and structure for installing a blade extension component, wherein steps S1 to S5 are interrelated and inseparable, and play multiple roles. First, the provision of the first lightning protection connection device, the second lightning protection connection device, and the lightning arrester makes it unnecessary to have enough space for the extension component during installation, and the blade extension component can be installed as a whole, effectively reducing the workers' high-altitude working time, the risk of high-altitude working, and the unit downtime, thereby improving the installation efficiency of the blade extension component, bringing greater economic benefits to customers, saving construction costs for itself, and improving quality and efficiency; second, the lightning protection system of the extension component adopts a component lightning protection cable, and the component lightning protection cable is installed at the center of the connecting surface between the SS surface component and the PS surface component. The built-in component lightning protection cable is consistent with the specifications of the blade lightning protection cable, and has higher reliability in withstanding lightning strike intensity and normal operation of the lightning protection system. There is no risk of falling off or failure after an ordinary lightning strike; When a strong lightning strike occurs, the blade shell structure will not be damaged; third, the glue injection bonding process is adopted. On the one hand, the product quality of the blade extension parts is improved, and the force applied on both sides is easy to control, and there are no quality defects such as thickness difference on both sides and lack of adhesive. On the other hand, compared with manual bonding, the glue injection bonding process can combine the three steps of scraping glue, installing and collecting glue into one step, saving time and improving the installation efficiency of the blade extension parts; fourth, the fatigue and rigidity of the blade extension parts are better, and the service life is longer; fifth, the setting of the glue blocking device can prevent the falling of the injected glue and the falling of the adhesive to the front end of the extension part and affect the operation; on the other hand, it can ensure that there are no cavities, lack of glue, etc. in the adhesive in the bonding area; it can also play an insulating role. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 A schematic diagram of a process of installing a blade extension component according to an embodiment of the present invention;

[0054] Figure 2 It is a schematic diagram of the installation cross-sectional structure of a method for installing a blade extension component according to an embodiment of the present invention;

[0055] Figure 3 It is a schematic cross-sectional structure diagram of the entire extension component of a blade extension component installation method according to an embodiment of the present invention;

[0056] Figure 4 A schematic diagram of bonding and lightning protection treatment of a base blade in a method for installing a blade extension component according to an embodiment of the present invention;

[0057] Figure 5 A schematic structural diagram of a first lightning protection connection device of a blade extension component installation method according to an embodiment of the present invention;

[0058] Figure 6A schematic diagram of the three-dimensional structure of an SS surface lightning protection connection base of a blade extension component installation method according to an embodiment of the present invention;

[0059] Figure 7 It is a schematic cross-sectional structure diagram of an SS surface lightning protection connection base of a blade extension component installation method according to an embodiment of the present invention;

[0060] Figure 8 A schematic diagram of the three-dimensional structure of a PS surface lightning protection connection base of a blade extension component installation method according to an embodiment of the present invention;

[0061] Fig. 9 A schematic cross-sectional structure diagram of a PS surface lightning protection connection base of a blade extension component installation method according to an embodiment of the present invention;

[0062] Fig.10 A schematic diagram of the three-dimensional structure of a SS surface lightning arrester of a blade extension component installation method according to an embodiment of the present invention;

[0063] Fig.11 A schematic diagram of the three-dimensional structure of a PS surface lightning arrester of a blade extension component installation method according to an embodiment of the present invention;

[0064] Fig.12 It is a schematic side view of a stereoscopic structure of a glue blocking device in a method for installing a blade extension component according to an embodiment of the present invention;

[0065] Fig.13 It is a top perspective schematic diagram of a glue blocking device of a blade extension component installation method according to an embodiment of the present invention;

[0066] Fig.14 It is a three-dimensional schematic diagram of an extension component of a blade extension component installation method described in an embodiment of the present invention.

[0067] Description of reference numerals:

[0068] 1. Extension component; 11. SS surface component; 12. PS surface component; 13. Component lightning protection cable; 14. SS surface glue injection port; 141. SS surface first glue injection port; 142. SS surface second glue injection port; 15. PS surface glue injection port; 151. PS surface first glue injection port; 152. PS surface second glue injection port; 16. Lightning terminal mounting hole; 161. First mounting hole; 162. Second mounting hole; 17. Glue injection port structure; 18. Mounting cavity; 19. Web; 2. Basic blade; 21. SS surface blade body; 22. PS surface blade body; 23. Blade lightning protection cable; 24. Bonding area; 25. Base mounting hole; 251. Third mounting hole; 252. Fourth mounting hole; 26. Blade tip lightning terminal; 31. First lightning protection connection device; 311. Lightning protection Lightning connection clip; 3111, first lightning connection plate; 3112, second lightning connection plate; 3113, third lightning connection plate; 3114, first connection hole; 3115, second connection hole; 3116, third connection hole; 3117, groove; 32, second lightning connection device; 321, SS surface lightning connection base; 3211, fourth connection hole; 3212, fifth connection hole; 322, PS surface lightning connection base; 3221, first connection column; 3222, sixth connection hole; 33, lightning arrester; 331, SS surface lightning arrester; 3311, second connection column; 332, PS surface lightning arrester; 3321, third connection column; 4, glue blocking device; 41, accommodating cavity; 42, installation of avoidance groove; 5, glue injection adhesive layer. DETAILED DESCRIPTION

[0069] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The descriptions of "first", "second", etc. mentioned in the embodiments of the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0070] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0071] Example 1

[0072] This embodiment provides a method for installing a blade extension component, such as Figures 1 to 14 As shown, the blade extension component installation method is used to install the extension component 1 on the base blade 2, such as Figure 1As shown, the blade extension component installation method includes the following steps:

[0073] S1. Produce an extension component 1 on site, wherein the extension component 1 comprises an SS surface component 11, a PS surface component 12 and a component lightning protection cable 13;

[0074] S2. Assemble and lightning-protect the extension component 1 as a whole on site, install the component lightning protection cable 13 between the SS surface component 11 and the PS surface component 12, and install the first lightning protection connection device 31 on the component lightning protection cable 13;

[0075] S3, performing bonding and lightning protection treatment on the base blade 2 at high altitude, and installing a second lightning protection connection device 32 on the tip lightning receptor 26 of the base blade 2;

[0076] S4, installing the assembled extension component 1 on the base blade 2 at high altitude, and connecting and fixing the first lightning protection connection device 31 and the second lightning protection connection device 32 through the lightning arrester 33;

[0077] S5. Inject glue and solidify at high altitude.

[0078] The blade extension component installation method and structural steps S1 to S5 described in the present invention are interrelated and inseparable, and play multiple roles. First, the arrangement of the first lightning protection connection device 31, the second lightning protection connection device 32 and the lightning arrester 33 makes it unnecessary to have enough space for the extension component 1 during the installation process, and the blade extension component 1 can be installed as a whole, effectively reducing the workers' high-altitude working time, high-altitude working risks and unit downtime, improving the installation efficiency of the blade extension component 1, bringing greater economic benefits to customers, saving construction costs for itself, and improving quality and efficiency; second, the lightning protection system of the extension component 1 adopts a component lightning protection cable 13, and the component lightning protection cable 13 is installed at the center of the connecting surface of the SS surface component 11 and the PS surface component 12. The built-in component lightning protection cable 13 is sized similar to the blade lightning protection cable 23. The specifications are consistent, and it has higher reliability in withstanding lightning strike intensity and normal operation of the lightning protection system. There is no risk of falling off or failure after an ordinary lightning strike; when a strong lightning strike occurs, the blade shell structure will not be damaged; third, the glue injection bonding process is adopted. On the one hand, the product quality of the blade extension component 1 is improved, and the force applied on both sides is easy to control, and there are no quality defects such as thickness difference on both sides and lack of adhesive. On the other hand, compared with manual bonding, the glue injection bonding process can combine the three steps of scraping glue, installing, and collecting glue into one step, saving time and improving the installation efficiency of the blade extension component 1; fourth, the fatigue and stiffness of the blade extension component 1 are better, and the service life is longer.

[0079] Specifically, Figure 2As shown, the basic blade 2 includes a SS surface blade body 21, a PS surface blade body 22 and a blade lightning protection cable 23. The blade lightning protection cable 23 is installed at the center position of the connecting surface of the SS surface blade body 21 and the PS surface blade body 22. Figure 4 As shown, a blade tip lightning receptor 26 is arranged on the blade tip of the base blade 2 .

[0080] Specifically, step S2 comprises the following steps:

[0081] S21, assembling the extension component 1 as a whole and performing lightning protection treatment on site;

[0082] S22, post-processing the overall assembled extension component 1 on site.

[0083] On the one hand, the setting of step 2 reduces the difficulty of operation on site compared with high altitude, shortens the operation time and improves work efficiency; on the other hand, the blade extension component 1 is easy to assemble as a whole, which effectively reduces the workers' high-altitude working time, high-altitude working risks and unit downtime.

[0084] Specifically, step S21 includes the following steps:

[0085] S211, first install the component lightning protection cable 13 on one of the SS surface component 11 or the PS surface component 12;

[0086] More specifically, Fig.14 As shown, in step S211 , a web 19 is provided on one of the SS surface component 11 or the PS surface component 12 , and the component lightning protection cable 13 is installed at the center position of the web 19 .

[0087] S212, connecting one end of the lightning protection connection clip 311 of the first lightning protection connection device 31 to the component lightning protection cable 13;

[0088] S213, then installing the glue blocking device 4 in the other end of the lightning protection connecting clip 311 to form a pre-assembled body;

[0089] S214 , finally installing the other of the SS surface component 11 or the PS surface component 12 on the pre-assembled body to complete the overall assembly of the extension component 1 .

[0090] Steps S211 to S214 are interrelated and inseparable, and realize the overall assembly and lightning protection of the extension component 1 on site, playing multiple roles. First, compared with working at high altitude, working on site reduces the difficulty of operation, shortens the operation time, and improves work efficiency; second, it is convenient to post-process the assembled extension component 1 on site, so as to facilitate the overall installation of the assembled blade extension component 1, effectively reducing the workers' high-altitude working time, high-altitude working risks and unit downtime; third, the component lightning protection cable 13 is installed at the center of the connecting surface of the SS surface component 11 and the PS surface component 12. The built-in component lightning protection cable 13 is consistent with the specifications of the blade lightning protection cable 23, and has higher reliability in terms of withstanding lightning strike intensity and normal operation of the lightning protection system. There is no risk of falling off or failure after ordinary lightning strikes, and when a strong lightning strike occurs, the blade shell structure will not be damaged; fourth, the setting of the glue blocking device 4 can prevent the falling of the injected glue on the one hand, and prevent the glue from falling off to the front end of the extension component 1 and affecting the operation; on the other hand, it can ensure that the adhesive in the bonding area 24 has no cavities, lack of glue, etc.; it can also play an insulating role.

[0091] Specifically, Figure 3 As shown, a mounting cavity 18 is formed between the glue blocking device 4 and the shell of the extension component 1 .

[0092] Specifically, Fig.12 As shown, the shape of the glue blocking device 4 is the same as that of the basic blade 2 , and a receiving cavity 41 is provided on the glue blocking device 4 , and the receiving cavity 41 cooperates with the mounting cavity 18 for mounting the basic blade 2 .

[0093] Specifically, Fig.13 As shown, an installation avoidance groove 42 is provided on the glue blocking device 4 , and the installation avoidance groove 42 is used to avoid the second lightning protection connection device 32 on the blade tip lightning receptor 26 when installing the base blade 2 .

[0094] After step S2 is completed, the final state is as follows Figure 3 shown.

[0095] Specifically, step S22 includes the following steps:

[0096] S221, setting a lightning arrester mounting hole 16 on the extension component 1, and trying to install the lightning arrester 33;

[0097] S222, performing insulation treatment on the entire lightning protection system of the extension component 1;

[0098] S223, providing a glue injection port structure 17 on the extension component 1;

[0099] S224, reinforcing the front and rear edges of the extension component 1 and applying a full surface modification coating.

[0100] Steps S221 to S224 are interrelated and inseparable, and post-processing of the overall assembled extension component 1 is carried out on site. On the one hand, the overall lightning protection system of the extension component 1 is insulated, and it is not easy to discharge when the lightning protection system is in passage or short-circuited, which can effectively avoid the internal temperature of the extension component 1 shell caused by thermal expansion and cracking due to cumulative discharge; on the other hand, time-consuming processes such as leading edge reinforcement of components involved in high-altitude operations and full-surface profiling coating can be completed in advance. Compared with high altitude, the operation difficulty is reduced on site, the operation time is greatly shortened, and the work efficiency is improved, thereby facilitating the overall installation of the assembled blade extension component 1, effectively reducing the workers' high-altitude working time, high-altitude working risks and unit downtime.

[0101] Specifically, step S3 includes the following steps:

[0102] S31, tearing off the release cloth of the blade bonding area 24 on the base blade 2;

[0103] S32, setting a base mounting hole 25 on the blade tip lightning receptor 26, wherein the base mounting hole 25 is used to install a second lightning protection connection device 32;

[0104] S33, installing and fixing the second lightning protection connection device 32 on the base mounting hole 25, and using conductive glue to seal it during the fixing process;

[0105] S34, after the fixing is completed, the lightning protection system on the base blade 2 is insulated.

[0106] Steps S31 to S34 are interrelated and inseparable, and realize the bonding and lightning protection treatment of the basic blade 2 at high altitude. On the one hand, the demoulding cloth of the bonding area 24 on the basic blade 2 is torn off to facilitate the subsequent glue injection process, so that the connection between the extension component 1 and the basic blade 2 is more secure; on the other hand, the lightning protection system on the basic blade 2 is insulated. When the lightning protection system is open or short-circuited, it is not easy to discharge, which can effectively avoid the internal temperature of the shell of the basic blade 2 due to thermal expansion and bursting caused by cumulative discharge.

[0107] Specifically, step S4 comprises the following steps:

[0108] S41, docking and installing the installation cavity 18 of the extension component 1 and the basic blade 2 together;

[0109] S42, after docking, use conductive glue to lubricate the connection interface between the lightning arrester 33 and the first lightning arrester connection device 31 and the second lightning arrester connection device 32;

[0110] S43, finally installing the lightning arrester 33 in the lightning arrester installation hole 16, and connecting and fixing the first lightning arrester connection device 31 and the second lightning arrester connection device 32 through the lightning arrester 33.

[0111] Steps S41 to S43 are interrelated and inseparable, and the overall assembled extension component 1 is installed on the base blade 2 at high altitude. On the one hand, the arrangement of the first lightning protection connection device 31, the second lightning protection connection device 32 and the lightning arrester 33 makes it unnecessary to have enough space for the extension component 1 during the installation process, and the blade extension component 1 can be installed as a whole, which effectively reduces the workers' high-altitude working time, high-altitude working risks and unit downtime, improves the installation efficiency of the blade extension component 1, brings greater economic benefits to customers, and saves construction costs for itself. Improve quality and increase efficiency; on the other hand, after docking, conductive glue will be used to lubricate the connection interface between the lightning arrester 33 and the first lightning arrester connection device 31 and the second lightning arrester connection device 32 to realize the path for the transmission of lightning current between the extension component 1 and the basic blade 2. When a lightning strike occurs, the extension component 1 receives the lightning current, and the current passes through the component lightning arrester cable 13, along the first lightning arrester connection device 31, the lightning arrester 33, and the second lightning arrester connection device 32 to the blade tip lightning arrester 26 of the basic blade 2, and then conducts the lightning current through the blade lightning arrester cable 23.

[0112] Specifically, step S5 comprises the following steps:

[0113] S51, after the installation is completed, use a glue injection gun to inject adhesive in sequence through the glue injection port structure 17 on the extension component 1 until the entire bonding area 24 is filled;

[0114] S52. After the injection is completed, the tooling is used to fix the excess adhesive and the bonding edges of the parts and blades, and the excess adhesive is subjected to transition and reinforcement treatment and heated for curing;

[0115] S53. Perform repair coating treatment on the surface coating scratches or excessive positions in the docking area caused during the installation process.

[0116] Steps S51 to S53 are interrelated and inseparable, and the extension component 1 and the base blade 2 are firmly connected together through glue injection and curing. The glue injection and bonding process is adopted to improve the product quality of the blade extension component 1 on the one hand, and the force applied on both sides is easy to control, and there are no quality defects such as thickness difference on both sides and lack of adhesive. On the other hand, compared with manual bonding, the glue injection and bonding process can combine the three steps of scraping glue, installing and collecting glue into one step, saving time and improving the installation efficiency of the blade extension component 1.

[0117] Specifically, in step S221, if Figure 3As shown, the lightning receptor mounting hole 16 is provided through the extension member 1, and the lightning receptor mounting hole 16 is used to mount the lightning arrester 33. A first mounting hole 161 is formed on the SS surface of the extension member 1, and a second mounting hole 162 is formed on the PS surface of the extension member 1.

[0118] More specifically, the position of the lightning receptor mounting hole 16 corresponds to the position of the second lightning protection connection device 32 .

[0119] Specifically, in step S223, if Figure 3 As shown, the glue injection port structure 17 includes a SS surface glue injection port 14 and a PS surface glue injection port 15 , and the SS surface glue injection port 14 and the PS surface glue injection port 15 are symmetrically arranged on the extension component 1 along the component lightning protection cable 13 .

[0120] This arrangement allows the SS and PS surfaces of the extension component 1 to be injected with glue on both sides connected to the base blade 2 at the same time, with the same injection force, and there are no quality defects such as thickness difference on both sides and lack of adhesive.

[0121] More specifically, Figure 2 As shown, the SS surface glue injection port 14 includes a first SS surface glue injection port 141 and a second SS surface glue injection port 142; the PS surface glue injection port 15 includes a first PS surface glue injection port 151 and a second PS surface glue injection port 152. The first SS surface glue injection port 141 and the first PS surface glue injection port 151 are arranged on the side of the installation cavity 18 close to the blade tip, and the second SS surface glue injection port 142 and the second PS surface glue injection port 152 are arranged on the side of the installation cavity 18 close to the blade root.

[0122] This arrangement ensures that the glue is injected evenly on both sides where the SS and PS surfaces of the extension component 1 are connected to the base blade 2, and the glue injection force is the same, without quality defects such as thickness difference on both sides and lack of adhesive.

[0123] More specifically, a positioning block (not shown) is provided in the bonding area 24, which ensures that there are no quality defects such as thickness difference on both sides and lack of adhesive on both sides where the SS surface and PS surface of the extension component 1 are connected to the basic blade 2.

[0124] More specifically, in step S212, if Figure 5As shown, the lightning protection connecting clip 311 includes a first lightning protection connecting plate 3111, a second lightning protection connecting plate 3112 and a third lightning protection connecting plate 3113 which are connected to each other. The first lightning protection connecting plate 3111, the second lightning protection connecting plate 3112 and the third lightning protection connecting plate 3113 are arranged in a "Y" shape. The first lightning protection connecting plate 3111 and the second lightning protection connecting plate 3112 are symmetrically arranged on both sides of the third lightning protection connecting plate 3113. A first connecting hole 3114 is arranged on the first lightning protection connecting plate 3111, a second connecting hole 3115 is arranged on the second lightning protection connecting plate 3112, and a third connecting hole 3116 and a groove 3117 are arranged on the third lightning protection connecting plate 3113.

[0125] This arrangement facilitates the connection of the lightning protection cable 13 with the lightning protection connection clamp 311 through the third connection hole 3116 and the groove 3117, and facilitates the connection of the lightning arrester 33 with the second lightning protection connection device 32 through the lightning protection connection clamp 311. In addition, it is also convenient to fix the rubber blocking device 4.

[0126] More specifically, in step S32, Figure 4 As shown, the base mounting hole 25 includes a third mounting hole 251 and a fourth mounting hole 252 , and the third mounting hole 251 is connected to the fourth mounting hole 252 .

[0127] More specifically, in step S33, Figure 4 As shown, the second lightning protection connection device 32 includes a SS surface lightning protection connection base 321 and a PS surface lightning protection connection base 322. The SS surface lightning protection connection base 321 is installed on the third installation hole 251, and the PS surface lightning protection connection base 322 is installed on the fourth installation hole 252.

[0128] More specifically, Figure 6 and Figure 7 As shown, a fourth connection hole 3211 and a fifth connection hole 3212 are provided on the SS surface lightning protection connection base 321 .

[0129] More specifically, Figure 8 and Fig. 9 As shown, a first connection column 3221 and a sixth connection hole 3222 are provided on the PS surface lightning protection connection base 322 .

[0130] More specifically, if Figure 2 and Figure 4 As shown, the fifth connecting hole 3212 matches with the first connecting column 3221 .

[0131] More specifically, in step S43, if Figure 2As shown, the lightning arrester 33 includes a SS surface lightning arrester 331 and a PS surface lightning arrester 332. Figure 3 As shown, the SS surface lightning arrester 331 is installed in the first installation hole 161 , and the PS surface lightning arrester 332 is installed in the second installation hole 162 .

[0132] Specifically, Fig.10 As shown, a second connecting column 3311 is provided on the SS surface lightning arrester 331. Fig.11 As shown, a third connecting column 3321 is provided on the PS surface lightning arrester 332 .

[0133] More specifically, the second connection column 3311 passes through the first connection hole 3114 and matches with the fourth connection hole 3211. The third connection column 3321 passes through the second connection hole 3115 and matches with the sixth connection hole 3222.

[0134] The blade extension component installation method and structural steps S1 to S5 described in the present invention are interrelated, so that the basic blade 2, SS surface blade body 21, PS surface blade body 22, blade lightning cable 23, blade tip lightning rod 26, extension component 1, SS surface component 11, PS surface component 12, component lightning cable 13, lightning rod 33, first lightning protection connection device 31, second lightning protection connection device 32, glue blocking device 4, and glue injection adhesive layer 5 are interrelated, inseparable, and play multiple roles. First, the arrangement of the first lightning protection connection device 31, the second lightning protection connection device 32 and the lightning arrester 33 makes it unnecessary to have enough space for the extension component 1 during the installation process, and the blade extension component 1 can be installed as a whole, effectively reducing the workers' high-altitude working time, high-altitude working risks and unit downtime, improving the installation efficiency of the blade extension component 1, bringing greater economic benefits to customers, saving construction costs for itself, and improving quality and efficiency; second, the lightning protection system of the extension component 1 adopts a component lightning protection cable 13, and the component lightning protection cable 13 is installed at the center of the connecting surface of the SS surface component 11 and the PS surface component 12. The built-in component lightning protection cable 13 is consistent with the specifications of the blade lightning protection cable 23, and has higher reliability in withstanding lightning strike intensity and normal operation of the lightning protection system. There is no risk of falling off or failure after an ordinary lightning strike; when a strong lightning strike occurs, the blade shell structure will not be damaged; third, the glue injection bonding process is adopted, on the one hand, the product quality of the blade extension component 1 is improved, and the force applied on both sides is easy to control, and there is no There are quality defects such as thickness difference on both sides and lack of adhesive. On the other hand, compared with manual bonding, the glue injection bonding process can combine the three steps of scraping glue, installing and collecting glue into one step, saving time and improving the installation efficiency of the blade extension component 1; Fourth, the fatigue and rigidity of the blade extension component 1 are better, and the service life is longer; Fifth, the setting of the glue blocking device 4 can prevent the glue injection from falling off on the one hand, and prevent the adhesive from falling off to the front end of the extension component 1 and affecting the operation; on the other hand, it can ensure that the adhesive in the bonding area 24 has no cavity, lack of glue, etc.; it can also play an insulating role; Sixth, the components of the lightning protection cable 13, the lightning arrester 33, the first lightning protection connection device 31, the second lightning protection connection device 32, the blade lightning protection cable 23, and the blade tip lightning arrester 26 form a lightning protection system. The lightning protection system is insulated and forms a double insulation effect with the glue blocking device 4. In the case of a lightning protection system passage or short circuit, it is not easy to discharge, which can effectively avoid the internal temperature of the shell from expanding due to heat due to cumulative discharge and causing the shell to burst.

[0135] Example 2

[0136] This embodiment proposes a blade extension component installation structure, the blade extension component installation structure is installed using a blade extension component installation method described in any one of the embodiments 1, the blade extension component installation structure comprises an extension component 1 and a base blade 2, the base blade 2 comprises an SS surface blade body 21, a PS surface blade body 22 and a blade lightning arrester cable 23, and a blade tip lightning arrester 26 is arranged on the blade tip of the base blade 2, such as Fig.14 As shown, the extension component 1 includes an SS surface component 11, a PS surface component 12 and a component lightning protection cable 13, the component lightning protection cable 13 is installed between the SS surface component 11 and the PS surface component 12, a first lightning protection connection device 31 is installed on the component lightning protection cable 13, a second lightning protection connection device 32 is arranged on the blade tip lightning rod 26, and the first lightning protection connection device 31 and the second lightning protection connection device 32 are connected and fixed by the lightning protection lightning rod 33.

[0137] Specifically, Figure 2 As shown, the first lightning protection connection device 31 is configured as a lightning protection connection clamp 311 , one end of the lightning protection connection clamp 311 is connected to the component lightning protection cable 13 , and the other end of the lightning protection connection clamp 311 is connected to the rubber blocking device 4 .

[0138] Specifically, Figure 2 As shown, a mounting cavity 18 is formed between the glue blocking device 4 and the shell of the extension component 1 , the basic blade 2 is mounted in the mounting cavity 18 , and a glue injection adhesive layer 5 is provided between the basic blade 2 and the mounting cavity 18 .

[0139] For the blade extension component installation structure, in addition to the basic blade 2, SS surface blade body 21, PS surface blade body 22, blade lightning protection cable 23, blade tip lightning arrester 26, extension component 1, SS surface component 11, PS surface component 12, component lightning protection cable 13, lightning arrester 33, first lightning protection connection device 31, second lightning protection connection device 32, glue blocking device 4, glue injection adhesive layer 5, it also includes other related components such as the blade tip lightning protection system of the extension component 1. In view of the fact that the specific structures and specific assembly relationships of the related components are all existing technologies, they are not elaborated here.

[0140] The lightning protection system of the blade tip of the extension component 1 is not specifically limited.

[0141] The blade extension component installation structure described in the present invention comprises a basic blade 2, an SS surface blade body 21, a PS surface blade body 22, a blade lightning protection cable 23, a blade tip lightning arrester 26, an extension component 1, an SS surface component 11, a PS surface component 12, a component lightning protection cable 13, a lightning arrester 33, a first lightning protection connection device 31, a second lightning protection connection device 32, a glue blocking device 4, and a glue injection adhesive layer 5, which are interrelated and inseparable and play multiple roles. First, the arrangement of the first lightning protection connection device 31, the second lightning protection connection device 32 and the lightning arrester 33 makes it unnecessary to have enough space during the installation of the extension component 1, and the blade extension component 1 can be installed as a whole, effectively reducing the workers' high-altitude working time, high-altitude working risks and unit downtime, improving the installation efficiency of the blade extension component 1, bringing greater economic benefits to customers, saving construction costs for itself, and improving quality and efficiency; second, the lightning protection system of the extension component 1 adopts a component lightning protection cable 13, and the component lightning protection cable 13 is installed at the center of the connecting surface of the SS surface component 11 and the PS surface component 12. The built-in component lightning protection cable 13 is consistent with the specifications of the blade lightning protection cable 23, and has higher reliability in withstanding lightning strike intensity and normal operation of the lightning protection system. There is no risk of falling off or failure after ordinary lightning strikes; when a strong lightning strike occurs, the blade shell structure will not be damaged; third, the glue injection adhesive layer 5 using the glue injection bonding process, on the one hand, improves the product quality of the blade extension component 1, and the force applied on both sides is easy to control On the other hand, compared with manual bonding, the glue injection bonding process can combine the three steps of scraping glue, installing and collecting glue into one step, saving time and improving the installation efficiency of the blade extension component 1; Fourth, the fatigue and rigidity of the blade extension component 1 are better, and the service life is longer; Fifth, the setting of the glue blocking device 4 can prevent the glue injection from falling off, and prevent the adhesive from falling off to the front end of the extension component 1 and affecting the operation; On the other hand, it can ensure that the adhesive in the bonding area 24 has no cavity, lack of glue, etc.; It can also play an insulating role; Sixth, the lightning protection cable 13, the lightning arrester 33, the first lightning protection connection device 31, the second lightning protection connection device 32, the blade lightning protection cable 23, and the blade tip lightning arrester 26 form a lightning protection system, and the lightning protection system is insulated to form a double insulation effect with the glue blocking device 4. In the case of a lightning protection system passage or short circuit, it is not easy to discharge, which can effectively avoid the internal temperature of the shell from expanding due to heat caused by cumulative discharge and causing the shell to burst.

[0142] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A method for installing a blade extension component, characterized in that: The blade extension component installation method comprises the following steps: S1. Producing an extension component (1) on site, wherein the extension component (1) includes an SS surface component (11), a PS surface component (12) and a component lightning protection cable (13); S2. Assemble and perform lightning protection treatment on the extension component (1) on site, install the component lightning protection cable (13) between the SS surface component (11) and the PS surface component (12), and install a first lightning protection connection device (31) on the component lightning protection cable (13); S3, performing bonding and lightning protection treatment on the base blade (2) at high altitude, and installing a second lightning protection connection device (32) on the tip lightning receptor (26) of the base blade (2); S4, installing the integrally assembled extension component (1) on the base blade (2) at high altitude, and connecting and fixing the first lightning protection connection device (31) and the second lightning protection connection device (32) through the lightning arrester (33); S5, glue injection and curing at high altitude; The first lightning protection connection device (31) is configured as a lightning protection connection clamp (311), one end of the lightning protection connection clamp (311) is connected to the component lightning protection cable (13), and the other end of the lightning protection connection clamp (311) is connected to the rubber blocking device (4); A mounting cavity (18) is formed between the glue blocking device (4) and the shell of the extension component (1), the basic blade (2) is mounted in the mounting cavity (18), and a glue injection adhesive layer (5) is provided between the basic blade (2) and the mounting cavity (18); A base mounting hole (25) is provided on the blade tip lightning receptor (26), and a second lightning protection connection device (32) is mounted and fixed on the base mounting hole (25); An installation avoidance groove (42) is provided on the rubber blocking device (4), and the installation avoidance groove (42) is used to avoid the second lightning protection connection device (32) on the blade tip lightning receptor (26) when installing the base blade (2); A lightning rod mounting hole (16) is provided on the extension component (1), and the lightning rod mounting hole (16) is used to mount a lightning arrester (33); the position of the lightning rod mounting hole (16) corresponds to the position of the second lightning arrester connection device (32); The lightning arrester (33) passes through the lightning arrester connection clamp (311) and is connected to the second lightning arrester connection device (32).

2. A method for installing a blade extension component according to claim 1, characterized in that: Step S2 comprises the following steps: S21, assembling the extension component (1) as a whole and performing lightning protection treatment on site; S22, post-processing the overall assembled extension component (1) on site.

3. A method for installing a blade extension component according to claim 2, characterized in that: Step S21 comprises the following steps: S211, first installing the component lightning protection cable (13) on one of the SS surface component (11) or the PS surface component (12); S212, connecting one end of the lightning protection connection clamp (311) of the first lightning protection connection device (31) to the component lightning protection cable (13); S213, then installing the glue blocking device (4) in the other end of the lightning protection connecting clamp (311) to form a pre-assembled body; S214. Finally, the other of the SS surface component (11) or the PS surface component (12) is mounted on the pre-assembled body to complete the overall assembly of the extension component (1).

4. A method for installing a blade extension component according to claim 2, characterized in that: Step S22 comprises the following steps: S221, providing a lightning arrester mounting hole (16) on the extension component (1), and attempting to install a lightning arrester (33); S222, performing insulation treatment on the entire lightning protection system of the extension component (1); S223, providing a glue injection port structure (17) on the extension component (1); S224, reinforcing the front and rear edges of the extension component (1) and applying a full surface finishing coating.

5. A method for installing a blade extension component according to claim 1, characterized in that: Step S3 comprises the following steps: S31, tearing off the release cloth on the bonding area (24) on the base blade (2); S32, providing a base mounting hole (25) on the blade tip lightning receptor (26), wherein the base mounting hole (25) is used to install a second lightning protection connection device (32); S33, installing and fixing the second lightning protection connection device (32) on the base mounting hole (25), and using conductive glue to seal it during the fixing process; S34, after the fixing is completed, the lightning protection system on the base blade (2) is insulated.

6. A method for installing a blade extension component according to claim 1, characterized in that: Step S4 comprises the following steps: S41, docking and installing the installation cavity (18) of the extension component (1) and the basic blade (2) together; S42, after docking, first use conductive glue to lubricate the connection interface between the lightning arrester (33) and the first lightning arrester connection device (31) and the second lightning arrester connection device (32); S43, finally installing the lightning arrester (33) in the lightning arrester installation hole (16), and connecting and fixing the first lightning arrester connection device (31) and the second lightning arrester connection device (32) through the lightning arrester (33).

7. A method for installing a blade extension component according to claim 1, characterized in that: Step S5 comprises the following steps: S51, first use a glue injection gun to sequentially inject adhesive through the glue injection port structure (17) on the extension component (1) until the entire bonding area (24) is filled; S52, after the injection is completed, the tooling is used to fix the excess adhesive and the bonding edge of the extension component (1) and the base blade (2) are subjected to transition and reinforcement treatment and heated for curing; S53. Perform repair coating treatment on the surface coating scratches or transition positions in the docking area caused during the installation process.

8. A blade extension component mounting structure, characterized in that: The blade extension component installation structure is installed using a blade extension component installation method according to any one of claims 1 to 7, wherein the blade extension component installation structure comprises an extension component (1) and a base blade (2), wherein the base blade (2) comprises an SS surface blade body (21), a PS surface blade body (22) and a blade lightning arrester cable (23), a blade tip lightning rod (26) is arranged on the tip of the base blade (2), the extension component (1) comprises an SS surface component (11), a PS surface component (12) and a component lightning arrester cable (13), the component lightning arrester cable (13) is installed between the SS surface component (11) and the PS surface component (12), a first lightning arrester connection device (31) is installed on the component lightning arrester cable (13), a second lightning arrester connection device (32) is arranged on the blade tip lightning arrester (26), and the first lightning arrester connection device (31) and the second lightning arrester connection device (32) are connected and fixed together through the lightning arrester (33).

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