Wind turbine blade lightning arrester installation device and installation method

Abstract

The present invention belongs to the technical field of wind turbine blades, and specifically discloses a wind turbine blade lightning arrester installation device and installation method, including an upper lightning arrester installation assembly and a lower lightning arrester installation assembly; the upper lightning arrester installation assembly includes a first positioning plug, an adhesive layer, a C-type mounting pad, a guide shaft, a first hole opener and a second hole opener; one side of the C-type mounting pad is fixed to the inner wall of the lower shell, and the other side of the C-type mounting pad is fixed to the base of the upper lightning arrester, and the base of the upper lightning arrester is pre-opened with an internal threaded hole matching the upper lightning arrester; the first positioning plug includes a screw and a positioning block; the upper end face of the positioning block is provided with a center hole and a plurality of annular grooves; the lower part of the positioning block is integrated with the screw; the lower lightning arrester installation assembly includes a second positioning plug; the guide shaft can be inserted into the center holes of the first positioning plug and the second positioning plug, and the guide shaft is used to guide the second hole opener. The above device can solve the problem that the base cannot be accurately drilled vertically in the prior art.

Description

Technical Field

[0001] The present invention belongs to the technical field of wind turbine blades, and in particular relates to a wind turbine blade lightning arrester installation device and an installation method. Background Art

[0002] Wind turbine blades work in high altitudes or open environments such as mountains, coastal areas, and the sea. They are the objects closest to the clouds on the ground and are very susceptible to lightning strikes during thunderstorms. Blade lightning receptors can guide lightning in a directional manner and conduct lightning current. The installation quality of the lightning receptor directly affects the operating safety of the blades and maintenance personnel. The most ideal installation is for the lightning receptor to be in surface contact with the base, so that sufficient diversion cross-sectional area can be obtained, while providing a stable connection and stable conductive performance.

[0003] At present, the lightning protection system of blades is in the form of lightning rod connected to the base, the base is connected to the branch conductor, the branch conductor is connected to the main conductor, and the main conductor is grounded. The lightning rod passes through the blade shell and is installed on the base. Due to the limitation of the manufacturing method, the base must be bonded to the inner surface of the blade shell before the blade is molded. After the blade is demoulded, the base is detected on the outer surface, the blade and base are drilled at the corresponding position, the base is tapped, and the lightning rod is installed.

[0004] The blade is made of upper and lower shells bonded together. Due to the limitation of the manufacturing method, a C-shaped bracket is bonded to the lower shell before the mold is closed, and the base is bonded to the bracket. Glue is piled on the base. When the mold is closed, the base is naturally bonded to the upper shell on the other side. Since the stiffness, height, angle, and placement of the C-shaped bracket cannot be confirmed, the base is not parallel to the blade surface after the shell is naturally bonded. From the shell anatomy of the actual lightning rod installation position, there is a huge angle between the base and the shell. When installing the lightning rod, first locate the approximate position of the base. Since the angle cannot be located, it is only possible to drill holes on the outer surface of the blade after the base is detected, expand the shell along the hole, punch and tap the base, install the lightning rod, and finally the lightning rod is only in threaded contact with the base.

[0005] The above scheme has the following technical problems: ① Due to the obstruction of the blade shell, the base position cannot be accurately found, and the base needs to be made very large, which wastes materials; ② In order to find the base, the diameter of the hole in the blade shell may exceed the diameter of the lightning rod, resulting in later maintenance of the blade; ③ Because the drilling and tapping are not perpendicular to the base, the lightning rod cannot be in surface contact with the base after installation, and only relies on threaded contact, resulting in virtual connection; ④ The hole opener cannot control the depth when drilling, and the base is damaged, resulting in sharp burrs, causing electric field distortion, and affecting lightning protection; ⑤ The results of the lightning strike test show that there is a virtual connection in the threaded contact conduction. When a large current passes through, the thread is melted and sparked, and the core material and glass fiber are blackened. In more serious cases, it may cause surrounding flammable materials to burn. Summary of the invention

[0006] The object of the present invention is to provide a wind turbine blade lightning arrester installation device and installation method to solve the problem that the base cannot be drilled accurately and vertically in the prior art.

[0007] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is: a wind turbine blade lightning rod installation device, comprising an upper lightning rod installation component and a lower lightning rod installation component, the upper lightning rod installation component installs the upper lightning rod on the upper shell of the wind turbine blade; the lower lightning rod installation component is used to install the lower lightning rod on the lower shell of the wind turbine blade; the upper lightning rod installation component comprises a first positioning plug, an adhesive layer, a C-shaped mounting pad, a guide shaft, a first hole opener and a second hole opener; one side of the C-shaped mounting pad is fixed to the inner wall of the lower shell, and the other side of the C-shaped mounting pad is fixed to the base of the upper lightning rod, and the base of the upper lightning rod is pre-opened with an internal threaded hole matching the upper lightning rod; the first positioning plug comprises a screw and a positioning block; the diameter of the positioning block is the same as the diameter of the upper lightning rod, and the first positioning plug is the same as the shape and size of the upper lightning rod; the screw and the upper lightning rod are fixed to the inner wall of the lower shell, and the C-shaped mounting pad is fixed to the inner wall of the lower shell, and the C-shaped mounting pad is fixed to the base of the upper lightning rod; the first positioning plug comprises a screw and a positioning block; the diameter of the positioning block is the same as the diameter of the upper lightning rod, and the first positioning plug is the same as the shape and size of the upper lightning rod; the screw and the upper lightning rod are fixed to the inner wall of the lower shell, and the C-shaped mounting pad is ... The internal threaded hole of the base matches; the upper part of the positioning block is an end face, and the upper end face of the positioning block is provided with a center hole and a plurality of annular grooves; the lower part of the positioning block is integrated with the screw; the C-shaped mounting pad can be bonded to the inner wall of the upper shell through the adhesive layer; the lower lightning rod installation assembly includes a second positioning plug, the second positioning plug has the same structure as the first positioning plug, and the second positioning plug has the same shape and size as the lower lightning rod; a through hole with the same diameter as the second positioning plug is pre-drilled on the core material of the lower shell, and the second positioning plug is pre-buried in the through hole of the core material of the lower shell; the guide shaft can be inserted into the center hole of the first positioning plug and the second positioning plug, and the guide shaft is used to guide the second hole opener; the first hole opener is used to drill a hole to find the center hole of the first positioning plug; the second hole opener is used to drill a mounting hole corresponding to the upper lightning rod or the lower lightning rod.

[0008] Furthermore, the upper lightning arrester installation assembly also includes a sealing layer for preventing glue from entering, and the sealing layer is used to seal the center holes of the first positioning plug and the second positioning plug.

[0009] Furthermore, the C-shaped mounting pad is an elastic pad.

[0010] Furthermore, the bonding layer is made of a structural adhesive layer, and the first positioning plug and the second positioning plug are made of polytetrafluoroethylene material.

[0011] Furthermore, the diameter of the center hole of the first positioning plug is 4.2 mm; the diameter of the guide shaft is 4 mm; the diameter of the hole of the first hole opener is 12 mm, and the diameter of the hole of the second hole opener is 40 mm; a through hole with a diameter of 4.2 mm is provided in the center of the second hole opener, and the through hole is used to pass the guide shaft.

[0012] Furthermore, the guide shaft is provided with a step, and a spring is fixed on the step.

[0013] In order to achieve the above object, the present invention also provides a method for installing a wind turbine blade lightning arrester, using the above wind turbine blade lightning arrester installation device, comprising the following steps:

[0014] Step 1: Preparation before mold closing;

[0015] S1.1: The base of the upper lightning receptor is connected to the wire, and the first positioning plug of the upper shell is tightened on the base of the upper lightning receptor; the C-shaped mounting pad is fixed on the inner wall of the lower shell; the base of the upper lightning receptor is fixed on the C-shaped mounting pad, and the first positioning plug faces the inner wall of the upper shell; a sealing layer is attached to the center hole of the first positioning plug, and an adhesive layer is provided around the base and the first positioning plug to wrap them, and the first positioning plug is not bonded to the adhesive layer;

[0016] S1.2: Before pouring the lower shell, a through hole with the same diameter as the second positioning plug is dug out on the core material, a sealing layer is pasted on the center hole of the second positioning plug and then placed into the through hole, fiberglass cloth is laid on the upper and lower sides of the core material, and the second positioning plug and the lower shell are cast together; the base of the lower lightning receptor is connected to the wire, and after the lower shell is solidified, the position of the second positioning plug is observed through the fiberglass cloth, the area around the second positioning plug is cleaned, and the base of the lower lightning receptor is screwed into the screw of the second positioning plug;

[0017] Step 2: The upper shell and the lower shell are molded together: the C-shaped mounting pad and the base are naturally bonded to the inner wall of the upper shell through the adhesive layer;

[0018] Step 3: Install the lightning arrester after the blades are demoulded:

[0019] S3.1 Install the upper lightning arrester on the upper casing:

[0020] S3.1.1: Find the center hole of the first positioning plug: Use a metal detector to approach the base of the upper lightning arrester from four directions on the upper shell, find four points, and the intersection of the diagonal lines of the four points, use this point as the first drilling point, use the first hole opener to drill a hole at the drilling point until the chipping stops; take out the blade shell drilled out of the hole; observe whether there is a center hole within the range of the hole; if not, find the second drilling point according to the direction in which the diameter of the annular groove on the upper end face of the first positioning plug becomes smaller, use the first hole opener to drill a hole again until the chipping stops; take out the shell drilled out of the hole, and find the center hole of the first positioning plug;

[0021] S3.1.2: Drilling the mounting hole of the upper lightning arrester: inserting the guide shaft into the center hole of the first positioning plug, and putting the second hole opener on the guide shaft; the second hole opener opens the hole along the guide shaft until it reaches the end face of the first positioning plug;

[0022] S3.1.3: Install the upper lightning receptor on the upper shell: remove the drilled blade shell and the first positioning plug through the mounting hole; apply a film of sealant on the side of the upper lightning receptor and install the upper lightning receptor through the mounting hole;

[0023] S3.2: Install the lower lightning arrester on the lower casing;

[0024] S3.2.1: Drill out the installation hole of the lower lightning arrester: directly observe the position of the second positioning plug through the fiberglass cloth; use the first hole opener to drill out the potting material adhering to the surface of the center hole of the second positioning plug; insert the guide shaft into the center hole of the second positioning plug, and put the second hole opener on the guide shaft; the second hole opener opens the hole along the guide shaft until it reaches the end face of the second positioning plug;

[0025] S3.2.2: Install the lower lightning arrester on the lower shell: remove the drilled blade shell and the second positioning plug through the mounting hole, apply a film of sealant on the side of the lower lightning arrester, and install the lower lightning arrester through the mounting hole.

[0026] The beneficial effects of the present technical solution are as follows: ① The present technical solution can determine the position of the center hole according to the pattern of the annular groove on the surface of the first positioning plug, so as to accurately find the position of the base of the upper lightning receptor, solving the problem in the prior art that it is difficult to accurately find the base position, thereby making the base very large or opening the hole with a very large diameter. ② In the present technical solution, the screws of the first positioning plug and the second positioning plug are tightened with the base, and the center of the first positioning plug and the second positioning plug is also provided with a center hole for installing the guide shaft guide, and the guide shaft can guide the second hole opener, so that the drilled lightning receptor installation hole can be perpendicular to the base, thereby ensuring that the lightning receptor is in surface contact with the base after installation. ③ In the present technical solution, the lightning receptor and the base can be in surface contact, replacing the prior art that only relies on threaded contact, avoiding the situation of virtual connection. ④ When using the first hole opener and the second hole opener to turn the hole, due to the first positioning plug, there will be no situation in the prior art where the drilling depth cannot be controlled to cause drilling damage to the base, thus avoiding electric field distortion. ⑤ The first positioning plug and the upper lightning receptor, the second positioning plug and the lower lightning receptor have the same shape and size, ensuring that there will be no extra gap after installing the upper lightning receptor or the lower lightning receptor to prevent water accumulation. ⑤ The step set on the guide shaft can prevent the guide shaft from falling into the electric drill and limit the drilling depth. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a lower housing before mold closing of a wind turbine blade lightning arrester installation device of the present invention;

[0028] Figure 2 It is a schematic structural diagram of a wind turbine blade lightning arrester installation device after mold closing according to the present invention;

[0029] Figure 3 for Figure 2 A top view of

[0030] Figure 4 for Figure 2 sectional view of;

[0031] Figure 5 This is the installation diagram of the upper lightning arrester;

[0032] Figure 6 It is a schematic diagram of the structure when the first hole opener is opening a hole;

[0033] Figure 7 for Figure 6 A partial enlarged view of

[0034] Figure 8 It is a schematic diagram of the structure when the second hole opener is opening a hole;

[0035] Fig. 9 Cross-sectional view for installing the upper air terminal;

[0036] Fig.10 A three-dimensional diagram of a first positioning plug and a second positioning plug;

[0037] Fig.11 is a three-dimensional diagram of a second hole opener;

[0038] Fig.12 for Fig.11 Cross-sectional view of . DETAILED DESCRIPTION

[0039] The following is further described in detail through specific implementation methods:

[0040] The figure marks in the drawings of the specification include: upper shell 1, lower shell 2, main conductor 3, branch conductor 4, C-type mounting pad 5, base 6 of upper lightning receptor, first positioning plug 7, adhesive layer 8, positioning block 9, screw 10, center hole 11, first hole opener 12, second hole opener 13, upper lightning receptor 14, annular groove 15, guide shaft 16, step 17, spring 18.

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, 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.

[0042] Embodiment 1

[0043] Basically as attached Figure 1-12As shown: a wind turbine blade lightning arrester installation device, including an upper lightning arrester installation component and a lower lightning arrester installation component, the upper lightning arrester installation component is used to install the upper lightning arrester 14 on the upper shell 1 of the wind turbine blade; the lower lightning arrester installation component is used to install the lower lightning arrester on the lower shell 2 of the wind turbine blade; the upper lightning arrester installation component includes a first positioning plug 7, an adhesive layer 8, a sealing layer, a C-type installation pad 5, a guide shaft 16, a first hole opener 12 and a second hole opener 13; the C-type installation pad 5 is an elastic pad, such as Figure 1 , 6 As shown in Figures 1 and 7, one side of the C-shaped mounting pad 5 is fixed to the inner wall of the lower shell 2, and the other side of the C-shaped mounting pad 5 is fixed to the base 6 of the upper lightning receptor 14. The base 6 of the upper lightning receptor 14 is pre-opened with an internal threaded hole that matches the upper lightning receptor 14; the first positioning plug 7 includes a screw 10 and a positioning block 9; the diameter of the positioning block 9 is the same as the diameter of the upper lightning receptor 14, and the first positioning plug 7 is the same in shape and size as the upper lightning receptor 14; the screw 10 matches the internal threaded hole of the base 6 of the upper lightning receptor 14. Fig.10 As shown, the upper part of the positioning block 9 is an end face, and the upper end face of the positioning block 9 is provided with a center hole 11 and a plurality of annular grooves 15; the lower part of the positioning block 9 is integrated with the screw 10; the C-shaped mounting pad 5 can be bonded to the inner wall of the upper shell 1 through the adhesive layer 8. The lower lightning rod installation assembly includes a second positioning plug, and the second positioning plug has the same structure as the first positioning plug 7, and the second positioning plug has the same shape and size as the lower lightning rod; a through hole with the same diameter as the second positioning plug is pre-punched out on the core material of the lower shell 2, and the second positioning plug is pre-buried in the through hole of the lower shell 2. The guide shaft 16 can be inserted into the center hole 11 of the first positioning plug 7 and the second positioning plug, and the guide shaft 16 is used to guide the second hole opener 13. As shown Figure 6 , 7 As shown, the first hole opener 12 is used to drill a hole to find the center hole 11 of the first positioning plug 7; Figure 8 , 9 As shown, the second hole opener 13 is used to drill a mounting hole corresponding to the upper lightning receptor 14 or the lower lightning receptor. The sealing layer is used to block the center hole 11 of the first positioning plug 7 and the second positioning plug to prevent adhesive from being bonded. In this embodiment, a sealant is used. The bonding layer 8 adopts a structural adhesive layer, and the first positioning plug 7 and the second positioning plug adopt polytetrafluoroethylene material. Other materials that do not bond with the bonding layer 8 can also be used. In this embodiment, the diameter of the center hole 11 of the first positioning plug 7 is 4.2 mm; the diameter of the guide shaft 16 is 4 mm; the opening diameter of the first hole opener 12 is 12 mm; the opening diameter of the second hole opener 13 is 40 mm, and a through hole with a diameter of 4.2 mm is provided in the center of the second hole opener 13, and the through hole is used to pass the guide shaft 16. A step 17 is provided on the guide shaft 16, and a spring 18 is fixed on the step 17.

[0044] Embodiment 2

[0045] A method for installing a lightning arrester on a wind turbine blade, using a lightning arrester installation device for a wind turbine blade according to the first embodiment, comprises the following steps:

[0046] Step 1: Preparation before mold closing;

[0047] S1.1: The base 6 of the upper lightning receptor 14 is connected to the branch conductor 4, the first positioning plug 7 of the upper shell 1 is tightened on the base 6 of the upper lightning receptor 14, and the C-type mounting pad 5 is fixed on the inner wall of the lower shell 2; the base 6 of the upper lightning receptor 14 is bonded to the C-type mounting pad 5, and the first positioning plug 7 faces the inner wall of the upper shell 1; a sealing layer is attached to the center hole 11 of the first positioning plug 7, and an adhesive layer 8 is arranged around the base 6 and the first positioning plug 7 for wrapping, specifically, glue is deposited on the base 6 and the first positioning plug 7, and the first positioning plug 7 does not bond with the adhesive layer 8 (because the material of the first positioning plug 7 is non-sticky); the branch conductor 4 is connected to the main conductor 3;

[0048] S1.2: Before pouring the lower shell 2, dig out a through hole with the same diameter as the second positioning plug on the core material, stick a sealing layer on the center hole of the second positioning plug and put it into the through hole, lay glass fiber cloth on the upper and lower sides of the core material, and pour the second positioning plug and the lower shell 2 together; connect the base of the lower lightning receptor to the branch conductor. After the lower shell 2 is solidified, observe the position of the second positioning plug through the glass fiber cloth (the glass fiber cloth is transparent), clean the area around the second positioning plug, and screw the base of the lower lightning receptor into the screw 10 of the second positioning plug;

[0049] Step 2: The upper shell 1 and the lower shell 2 are molded together: the C-shaped mounting pad 5 and the base 6 are naturally bonded to the inner wall of the upper shell 1 through the adhesive layer 8;

[0050] Step 3: Install the lightning arrester after the blades are demoulded:

[0051] S3.1 Install the upper lightning arrester 14 of the upper housing 1:

[0052] S3.1.1: Find the center hole 11 of the first positioning plug 7: Use a metal detector to approach the base 6 of the upper lightning arrester 14 from four directions on the upper shell 1, find four points, and the intersection of the diagonal lines of the four points, use the point as the first drilling point, use the first hole opener 12 to open a hole at the drilling point until the white cutting stops; take out the blade shell drilled out in the hole; observe whether there is a center hole 11 within the range of the hole; if not, find the second drilling point according to the direction in which the diameter of the annular groove 15 on the upper end face of the first positioning plug 7 becomes smaller, use the first hole opener 12 to open a hole again until the white cutting stops; take out the shell drilled out in the hole, and find the center hole 11 of the first positioning plug 7;

[0053] S3.1.2: Drilling the mounting hole of the upper lightning arrester 14: inserting the guide shaft 16 into the central hole 11 of the first positioning plug 7, sleeve the second hole opener 13 on the guide shaft 16, and the second hole opener 13 opens a hole along the guide shaft 16 until it reaches the end face of the first positioning plug 7;

[0054] S3.1.3: Install the upper lightning receptor 14 on the upper shell 1: remove the drilled blade shell and the first positioning plug 7 through the mounting hole; apply a sealant film on the side of the upper lightning receptor 14, and install the upper lightning receptor 14 through the mounting hole;

[0055] S3.2: Install the lower lightning arrester on the lower shell 2;

[0056] S3.2.1: Drill out the installation hole of the lower lightning arrester: the position of the second positioning plug can be directly observed through the fiberglass cloth; use the first hole opener 12 to drill out the potting material adhering to the surface of the center hole of the second positioning plug; insert the guide shaft 16 into the center hole of the second positioning plug, and put the second hole opener 13 on the guide shaft 16; the second hole opener 13 makes a hole along the guide shaft 16 until it reaches the end face of the second positioning plug;

[0057] S3.2.2: Install the lower lightning receptor on the lower shell 2: remove the drilled blade shell and the second positioning plug through the installation hole, apply a film of sealant on the side of the lower lightning receptor, and install the lower lightning receptor through the installation hole.

[0058] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0059] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A wind turbine blade lightning arrester installation device, characterized in that: The invention comprises an upper lightning receptor installation component and a lower lightning receptor installation component, wherein the upper lightning receptor installation component is used to install an upper lightning receptor (14) on an upper shell (1) of a wind turbine blade; the lower lightning receptor installation component is used to install the lower lightning receptor on a lower shell (2) of a wind turbine blade; the upper lightning receptor installation component comprises a first positioning plug (7), an adhesive layer (8), a C-shaped installation pad (5), a guide shaft (16), a first hole opener (12) and a second hole opener (13); one side of the C-shaped installation pad (5) is fixed to the inner wall of the lower shell (2), and the other side of the C-shaped installation pad (5) is fixed to the upper shell (2). The invention relates to a base (6) of a lightning receptor (14), wherein an internal threaded hole matching the upper lightning receptor (14) is pre-opened on the base (6) of the upper lightning receptor (14); the first positioning plug (7) comprises a screw rod (10) and a positioning block (9); the diameter of the positioning block (9) is the same as the diameter of the upper lightning receptor (14); the first positioning plug (7) and the upper lightning receptor (14) are the same in shape and size; the screw rod (10) matches the internal threaded hole of the base (6) of the upper lightning receptor (14); the upper part of the positioning block (9) is an end face, and the upper end face of the positioning block (9) is provided with a center hole (10); 1) and a plurality of annular grooves (15); the lower portion of the positioning block (9) is integrated with the screw (10); the C-shaped mounting pad (5) can be bonded to the inner wall of the upper shell (1) through the bonding layer (8), and the C-shaped mounting pad (5) is an elastic pad; the upper lightning receptor mounting assembly also includes a sealing layer for preventing glue from entering, and the sealing layer is used to block the center holes (11) of the first positioning plug (7) and the second positioning plug; the lower lightning receptor mounting assembly includes a second positioning plug, the second positioning plug has the same structure as the first positioning plug (7), and the second positioning plug is shaped similar to the lower lightning receptor. The second positioning plug is of the same size; a through hole with the same diameter as the second positioning plug is pre-drilled on the core material of the lower shell (2), and the second positioning plug is pre-buried in the through hole of the core material of the lower shell (2); the guide shaft (16) can be inserted into the center holes (11) of the first positioning plug (7) and the second positioning plug, and the guide shaft (16) is used to guide the second hole opener (13); the first hole opener (12) is used to drill a hole to find the center hole (11) of the first positioning plug (7); and the second hole opener (13) is used to drill a mounting hole corresponding to the upper lightning receptor (14) or the lower lightning receptor.

2. A wind turbine blade lightning arrester installation device according to claim 1, characterized in that: The bonding layer (8) is a structural adhesive layer, and the first positioning plug (7) and the second positioning plug are made of polytetrafluoroethylene material.

3. A wind turbine blade lightning arrester installation device according to claim 1, characterized in that: The diameter of the center hole (11) of the first positioning plug (7) is 4.2 mm; the diameter of the guide shaft (16) is 4 mm; the opening diameter of the first hole opener (12) is 12 mm, and the opening diameter of the second hole opener (13) is 40 mm; a through hole with a diameter of 4.2 mm is provided at the center of the second hole opener (13), and the through hole is used to pass the guide shaft (16).

4. A wind turbine blade lightning arrester installation device according to claim 3, characterized in that: The guide shaft (16) is provided with a step (17), and a spring (18) is fixed on the step (17).

5. A method for installing a wind turbine blade lightning arrester, characterized in that: A wind turbine blade lightning arrester installation device according to any one of claims 2 to 4 comprises the following steps: Step 1: Preparation before mold closing; S1.1: The base (6) of the upper lightning receptor (14) is connected to the wire, the first positioning plug (7) of the upper shell (1) is screwed onto the base (6) of the upper lightning receptor, and the C-shaped mounting pad (5) is fixed onto the inner wall of the lower shell (2); the base (6) of the upper lightning receptor (14) is fixed onto the C-shaped mounting pad (5), with the first positioning plug (7) facing the inner wall of the upper shell (1); a sealing layer is attached to the center hole (11) of the first positioning plug (7), and an adhesive layer (8) is provided around the base (6) and the first positioning plug (7) to wrap them, and the first positioning plug (7) is not bonded to the adhesive layer (8); S1.2: Before pouring the lower shell (2), a through hole with the same diameter as the second positioning plug is made on the core material, a sealing layer is pasted on the center hole of the second positioning plug and then placed into the through hole, glass fiber cloth is laid on the upper and lower sides of the core material, and the second positioning plug and the lower shell (2) are cast together; the base of the lower lightning receptor is connected to the wire, and after the lower shell (2) is solidified, the position of the second positioning plug is observed through the glass fiber cloth, the area around the second positioning plug is cleaned, and the base of the lower lightning receptor is screwed into the screw of the second positioning plug; Step 2: The upper shell (1) and the lower shell (2) are molded together: the C-shaped mounting pad (5) and the base (6) are naturally bonded to the inner wall of the upper shell (1) via the bonding layer (8); Step 3: Install the lightning arrester after the blades are demoulded: S3.1 Install the upper lightning arrester (14) of the upper housing (1): S3.1.1: Find the center hole (11) of the first positioning plug (7): Use a metal detector to approach the base (6) of the upper lightning arrester (14) from four directions on the upper shell (1), find four points, and the intersection of the diagonal lines of the four points, use the point as the first drilling point, use the first hole opener (12) to open a hole at the drilling point until the chipping stops; remove the blade shell drilled out of the hole; observe whether there is a center hole (11) within the range of the hole; if not, find the second drilling point according to the direction in which the diameter of the annular groove (15) on the upper end face of the first positioning plug (7) becomes smaller, use the first hole opener (12) to open a hole again until the chipping stops; remove the shell drilled out of the hole, and find the center hole (11) of the first positioning plug (7); S3.1.2: Drilling a mounting hole for the upper lightning arrester (14): inserting a guide shaft (16) into the central hole (11) of the first positioning plug (7), and putting a second hole opener (13) on the guide shaft (16); the second hole opener (13) opens a hole along the guide shaft (16) until it reaches the end surface of the first positioning plug (7); S3.1.3: Installing the upper lightning receptor (14) on the upper shell (1): taking out the drilled blade shell and the first positioning plug (7) through the mounting hole; applying a sealant on the side of the upper lightning receptor (14), and installing the upper lightning receptor (14) through the mounting hole; S3.2: Install the lower lightning arrester on the lower housing (2); S3.2.1: Drill out the installation hole of the lower lightning arrester: directly observe the position of the second positioning plug through the fiberglass cloth; use the first hole opener (12) to drill out the injection material adhering to the surface of the center hole of the second positioning plug; insert the guide shaft (16) into the center hole of the second positioning plug, and put the second hole opener (13) on the guide shaft (16); the second hole opener (13) opens a hole along the guide shaft (16) until it reaches the end face of the second positioning plug; S3.2.2: Install the lower lightning receptor on the lower shell (2): remove the drilled blade shell and the second positioning plug through the installation hole, apply a film of sealant on the side of the lower lightning receptor, and install the lower lightning receptor through the installation hole.

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