Wing sail lightning protection system

Abstract

The utility model relates to a wing sail lightning protection system which comprises wing sail blades, a lightning rod, a metal net, a cable, a connecting pipe, an elastic connecting mechanism, a pulley, a metal belt, a mast and a sliding groove. The metal nets comprise the transverse metal net and the longitudinal metal net which are arranged on the outer surface of the upper sail blade in a criss-cross mode, the longitudinal metal net is further connected with the lightning rod arranged on the outer side of the top of the upper sail blade, the lightning rod sequentially penetrates through the longitudinal metal net, the upper sail blade and the connecting pipe and then is connected with the elastic connecting mechanism, and the elastic connecting mechanism is further connected with the pulley. The pulley is arranged in the sliding groove, the sliding groove is formed in the metal belt, and the metal belt is longitudinally arranged on the mast. And the plurality of lightning rods are connected and conducted through a cable which is annularly arranged along the upper sail blade. The metal nets are additionally arranged on the sail blades, so that the wing sail can be protected against thunder in a larger area; the sliding stability of the pulleys and the contact stability of the pulleys and the sliding grooves in the lifting process of the sail blades can be guaranteed through the elastic connecting mechanisms, so that the wing sail blades are continuously connected and conducted in the lifting process. The wing sail lightning protection device can perform all-directional lightning protection on the wing sail, and is safe, reliable and long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of sail lightning protection, in particular to a wing sail lightning protection system. Background Art

[0002] Marine sails typically use a wing-shaped sail system. Wingsails utilize an aircraft wing-like shape. The wind passing through the sails at different speeds creates pressure, which in turn propels the ship. Wingsails are an excellent choice for energy-efficient marine wind turbines. However, wing sail systems, situated high above the ship's deck, are vulnerable to lightning strikes. Wingsail blades are made of composite materials with poor electrical conductivity. Lightning strikes can easily damage the structure, rendering the product useless.

[0003] The wingsail blades use a stacked retractable technology, with the upper blades having significant lifting and lowering movements. At the same time, the wingsail system needs to rotate according to wind direction. Designing an efficient lightning protection system to smoothly guide lightning contacted by the wingsail system into the stationary substrate through the lightning protection system is a technical difficulty.

[0004] At present, the conventional wing sail lightning protection system is to design a lightning rod at the top of the mast, and the lower part of the lightning rod is connected to the down conductor. However, there is no lightning protection facility designed for the sail blade itself. The sail blade has a huge surface area. If no protection is taken, lightning damage will be a high probability event. Summary of the Invention

[0005] In order to solve the above technical problems, the utility model provides a wingsail lightning protection system, which improves the lightning protection effect of the wingsail and solves the problem of unstable lightning diversion connection during the raising and lowering of the sail blades. The utility model can provide all-round lightning protection for the wingsail, which is safe, reliable and has a long service life.

[0006] The present invention is specifically implemented through the following technical solutions: a wing sail lightning protection system proposed by the present invention includes a wing sail blade, a lightning rod, a metal mesh, a cable, a connecting pipe, an elastic connecting mechanism, a pulley, a metal belt, a mast, and a slide; the wing sail blade includes at least an upper sail blade and a lower sail blade, the lightning rod is arranged on the outer side of the top of the upper sail blade, and the lightning rod is made of metal as a whole, and includes a lightning rod chassis, a lightning ball, a connecting stud and a needle part; the metal mesh is arranged on the outer surface of the upper sail blade, and the metal mesh includes a transverse metal mesh and a longitudinal metal mesh, and the transverse metal mesh and the longitudinal metal mesh are crisscrossed to form a connected network, and the setting position of the longitudinal metal mesh corresponds to the position of the lightning rod and is connected to the connecting stud of the lightning rod. ; Multiple lightning rods are arranged at intervals along the circumference of the upper sail blade and are connected to each other through cables; the connecting pipe is threadedly connected to the tail end of the lightning rod connecting stud, and the wires at both ends of the cable are respectively passed through the connecting pipes on the two adjacent lightning rod connecting studs and crimped and fixed by the corresponding connecting studs, thereby realizing the connection and conduction of the two adjacent lightning rods; the tail end of the connecting stud of at least one lightning rod is also connected to the elastic connecting mechanism, and the other end of the elastic connecting mechanism is connected to a pulley, and a metal belt is longitudinally bonded to the mast, the bottom of the metal belt is grounded, and a slide groove is also provided on the metal belt, and the pulley can slide longitudinally along the slide groove. The charge received by the metal mesh and the lightning rod is finally transmitted to the pulley, the slide groove, and the metal belt in sequence through the elastic connecting mechanism, and discharged into the earth through the metal belt.

[0007] In the aforementioned wingsail lightning protection system, the intersection of the transverse metal mesh and the longitudinal metal mesh includes but is not limited to a welding connection.

[0008] In the aforementioned wingsail lightning protection system, the cable is fixed to the inner wall of the upper sail blade, and the fixing method includes but is not limited to bonding.

[0009] In the aforementioned wingsail lightning protection system, the lightning ball is arranged in the middle of the needle part, and the lightning rod chassis is arranged on the connecting stud, and the axial direction of the connecting stud is perpendicular to the axial direction of the needle part.

[0010] The aforementioned wing sail lightning protection system is integrally cast by injection molding of the upper sail blade, the inner connecting plate, the metal mesh and the outer connecting plate. The inner connecting plate is arranged between the upper sail blade and the longitudinal metal mesh, and the longitudinal metal mesh is arranged between the inner connecting plate and the outer connecting plate. The outer connecting plate is provided with screw hole I, and the inner connecting plate is provided with screw hole II. The connecting stud of the lightning rod passes through the screw hole I on the outer connecting plate, the longitudinal metal mesh, the screw hole II on the inner connecting plate, and the screw hole III on the upper sail blade in sequence. After the connecting stud is tightened with the screw hole I, screw hole II and screw hole III, the outer connecting plate is directly contacted and connected with the chassis of the lightning rod.

[0011] In the aforementioned wing sail lightning protection system, one or more intermediate sail blades are further provided between the upper sail blade and the lower sail blade.

[0012] Furthermore, the upper sail blade, the middle sail blade and the lower sail blade are all provided with the metal mesh, and the metal mesh of the upper sail blade, the metal mesh of the middle sail blade and the metal mesh of the lower sail blade are independently provided and independently connected to the metal belt, which does not affect the lifting and lowering of the wing sail blade.

[0013] The aforementioned wingsail lightning protection system, the elastic connection mechanism includes a spring, a first connecting rod, and a second connecting rod. The first connecting rod and the second connecting rod are movably connected, and the spring is arranged between the first connecting rod and the second connecting rod. After the first connecting rod and the second connecting rod are installed in place, the spring is in a compressed state.

[0014] Furthermore, one end of the first connecting rod is threadedly connected to the tail end of the connecting stud of the lightning rod, and the other end is connected to a sliding rod. The other end of the sliding rod is sleeved in the inner hole of one end of the second connecting rod, and the other end of the second connecting rod is connected to the pulley; the spring is sleeved on the outer periphery of the sliding rod and its two ends respectively abut against the ends of the first connecting rod and the second connecting rod.

[0015] In the aforementioned wingsail lightning protection system, the connecting pipe, elastic connecting mechanism, pulley and slide groove are all made of metal.

[0016] Compared with the prior art, the present invention has obvious advantages and beneficial effects. By means of the above technical solution, the present invention can achieve considerable technological advancement and practicality, and has a wide range of utilization value. It has at least the following advantages:

[0017] (1) The utility model sets a lightning rod on the top of the sail blade, and lays a metal mesh on the surface of the wing sail blade. The lightning rod and the metal mesh are connected and conducted to form a multi-path connection channel. The charges received by multiple lightning rods form a current that is connected and conducted to each other through cables, and finally transmitted to the connecting stud of the lightning rod connected to the elastic connecting mechanism, and then transmitted to the pulley, chute and metal belt through the elastic connecting mechanism connected to the connecting stud. The metal belt is grounded, and finally the current is discharged into the ground to achieve a lightning protection effect.

[0018] (2) The utility model lays an additional metal mesh on the surface of the wingsail blade as a lightning receiving device, forming a crisscross protection network, which can take into account the lightning protection of the wingsail over a larger area. After the blade is struck by lightning, the lightning can be discharged quickly, which effectively improves the lightning protection safety of the wingsail and realizes the protection of the blade.

[0019] (3) The utility model sets a longitudinal metal belt on the mast, the bottom of the metal belt is grounded, and a slide groove is set on the metal belt. Multiple lightning rods are connected and conducted through cables fixed on the inner side of the sail blade. At least one lightning rod is elastically connected to the pulley through an elastic connection mechanism. When the sail blade is raised or lowered, it can drive the pulley to slide longitudinally along the slide groove set on the metal belt. The spring on the elastic connection mechanism makes the pulley close to the slide groove, ensuring the stability of the pulley sliding during the raising and lowering of the sail blade and ensuring that the pulley is in stable contact with the slide groove when sliding, so that the wing sail blade can achieve uninterrupted connection and conduction when it is raised or lowered. At the same time, it also avoids the problems of redundant down conductors and unstable shaking during the raising and lowering of the sail blade caused by the original use of down conductors for grounding and conduction. The utility model can provide all-round lightning protection for the wing sail, which is safe, reliable and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a side view of the structure of the wingsail lightning protection system of the utility model.

[0021] Figure 2 yes Figure 1 Top view of .

[0022] Figure 3 yes Figure 2 An enlarged view of the AA section at a local position in the middle.

[0023] Figure 4 yes Figure 3 An enlarged schematic diagram of the metal mesh fixing method.

[0024] Figure 5 yes Figure 3 An enlarged schematic diagram of the elastic connection mechanism.

[0025] Figure 6 This is a schematic diagram of two adjacent lightning rods connected by a cable.

[0026] Among them, 1: wing sail blade; 1-1: upper sail blade; 1-2: lower sail blade; 2: lightning rod; 2-1: lightning rod chassis; 2-2: lightning ball; 2-3: connecting stud; 2-4: lightning rod needle; 3: metal mesh; 3-1: horizontal metal mesh; 3-2: longitudinal metal mesh; 4: cable; 5: connecting pipe; 6: pulley; 7: metal belt; 8: mast; 9: slide; 10: spring; 11: first connecting rod; 12: second connecting rod; 13: slide rod; 14: first stop; 15: second stop; 16: outer connecting disk; 17: inner connecting disk; 18: fixing part. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0028] In order to overcome the defects of the existing technology, the utility model provides a wing sail lightning protection system, which is designed for multiple sections of sail blades and the lifting and lowering operation of the sail blades. While improving the lightning protection effect of the wing sail, it can also solve the problem of lightning conduction connection during the lifting and lowering of the sail blades.

[0029] The wingsail lightning protection system includes a wingsail blade 1, a lightning rod 2, a metal mesh 3, a cable 4, a connecting pipe 5, an elastic connecting mechanism, a pulley 6, a metal belt 7, a mast 8, and a chute 9.

[0030] The wing sail blade 1 includes at least an upper blade 1-1 and a lower blade 1-2. One or more intermediate blades may be positioned between the upper and lower blades, depending on actual needs. In one embodiment, the upper blade and the intermediate blade are movably connected, the intermediate blade and the lower blade are movably connected, and adjacent intermediate blades are movably connected to each other. The upper, intermediate, and lower blades can be connected vertically and telescopically.

[0031] The lightning rod 2 is arranged on the outside of the top of the upper sail blade. In one embodiment, the cross section of the wing sail blade is crescent-shaped, and multiple lightning rods are arranged on the top of the outer wall of the upper sail blade and are evenly or unevenly arranged along the circumference of the upper sail blade, such as Figure 2 As shown. The lightning rod is made of metal and includes a lightning rod chassis 2-1, a lightning ball 2-2, a connecting stud 2-3 and a needle portion 2-4. The lightning ball 2-2 is arranged on the needle portion 2-4, and the lightning rod chassis 2-1 is arranged on the connecting stud 2-3. The axial direction of the connecting stud 2-3 is perpendicular to the axial direction of the needle portion 2-4. Figure 3 shown.

[0032] The metal mesh 3 is arranged on the outer surface of the upper sail blade and is threadedly connected to the connecting stud 2-3. The metal mesh 3 includes a transverse metal mesh 3-1 and a longitudinal metal mesh 3-2. The transverse metal mesh and the longitudinal metal mesh are arranged in a crisscross pattern to form a connected network, and the setting position of the longitudinal metal mesh corresponds to the position of the lightning rod. Figure 1 In one embodiment, the intersection of the transverse metal mesh and the longitudinal metal mesh is welded, but the present invention is not limited thereto.

[0033] In one embodiment, the metal mesh is only provided on the outer surface of the upper sail blade. The longitudinal metal mesh of the upper sail blade is fixed to the outer surface of the upper sail blade through the outer connecting plate 16 and the inner connecting plate 17 and is screwed to the connecting studs 2-3, as shown in FIG. Figure 3 As shown. The upper sail blade is integrally cast with the inner connecting plate, the metal mesh and the outer connecting plate. The inner connecting plate is arranged between the upper sail blade and the longitudinal metal mesh, and the longitudinal metal mesh is arranged between the inner connecting plate and the outer connecting plate. The outer connecting plate is a metal connecting plate, and a screw hole I is arranged on the outer connecting plate. The inner connecting plate includes a metal connecting plate and a fixing part 18 arranged on the metal connecting plate, and a screw hole II is arranged on the inner connecting plate. The connecting studs 2-3 of the lightning rod pass through the screw hole I on the outer connecting plate, the longitudinal metal mesh, the screw hole II on the inner connecting plate, and the screw hole III on the upper sail blade in sequence. After the connecting studs are tightened with the screw holes I, II and III, the outer connecting plate is directly contacted and connected with the chassis of the lightning rod, thereby realizing the connection and conduction between the lightning rod and the inner and outer connecting plates and the entire metal mesh. The diversion effect between the metal mesh and the connecting studs can be enhanced by the outer connecting plate and the inner connecting plate.

[0034] Multiple lightning rods on the wing sail blade are spaced circumferentially along the upper blade and interconnected via a cable 4. In one embodiment, the cable 4 is fixed to the inner wall of the upper blade by methods including, but not limited to, bonding. The cable 4 includes an inner conductor and an outer insulation layer. Each lightning rod's connecting stud is also mounted with a connecting tube 5. The connecting tube 5 is located on the inner side of the upper blade and has a screw hole IV in the middle for threaded connection between the connecting tube and the lightning rod's connecting stud. The axial direction of the screw hole IV is perpendicular to the axial direction of the connecting tube. The openings at both ends of the connecting tube are for inserting the conductors of the cable 4. After the insulation layer is removed from both ends of the cable 4, the wires at both ends are respectively passed through the connecting tubes on the two adjacent lightning rod connecting studs until they are inserted into the screw holes IV of the corresponding connecting tubes. After the connecting studs of the lightning rods are tightened with the inner and outer connecting plates and the metal mesh, the wing sail blades, and the connecting tube threads, the wires inserted at both ends of the connecting tubes are pressed tightly into the screw holes IV to achieve the connection and conduction between the two adjacent lightning rods. Any two adjacent lightning rods are connected through the cable 4, so that all the lightning rods arranged on the wing sail blades are electrically connected to each other through the cable 4.

[0035] The tail end of the connecting stud of at least one of the multiple lightning rods on the wing sail blade is also connected to the elastic connecting mechanism. One end of the elastic connecting mechanism is threadedly fixed to the tail end of the connecting stud of the lightning rod, and the other end is connected to the pulley 6. A metal belt 7 is longitudinally bonded to the mast 8, the bottom of which is grounded. The metal belt 7 is also provided with a slide 9, and the pulley 6 can slide longitudinally along the slide 9. The charge received by the metal mesh on the upper sail blade is transmitted to the corresponding lightning rod. The charge received by the multiple lightning rods ultimately forms an electric current, which is transmitted through a cable to the connecting stud of the lightning rod connected to the elastic connecting mechanism. The current is then transmitted through the elastic connecting mechanism to the pulley, slide chute, and metal belt, and then discharged into the ground through the metal belt. The elastic connecting mechanism ensures the stability of the pulley as it slides up and down along the slide chute, and ensures that the pulley is in stable contact with the slide chute when sliding.

[0036] In one embodiment, the elastic connection mechanism includes a spring 10, a first connecting rod 11, and a second connecting rod 12. The first connecting rod and the second connecting rod are movably connected, and the spring is arranged between the first connecting rod and the second connecting rod. When the first connecting rod and the second connecting rod slide axially with each other, the spring can be compressed or extended under the action of elastic force.

[0037] In one embodiment, one end of the first connecting rod is threaded and threadedly connected to the tail end of the connecting stud of the lightning rod. The other end of the first connecting rod is connected to a sliding rod 13, which is inserted into the inner hole of one end of the second connecting rod. The other end of the second connecting rod is connected to the pulley. The spring 10 is sleeved around the outer periphery of the sliding rod. The outer diameter of the sliding rod is smaller than the outer diameter of the first connecting rod, so that the end where the first connecting rod connects to the sliding rod forms a first stop 14. The inner diameter of the second connecting rod is smaller than the outer diameter of the second connecting rod, so that the end where the second connecting rod connects to the sliding rod forms a second stop 15. The inner diameter of the spring is smaller than the outer diameters of the first and second connecting rods. The pulley is disposed in a chute. After the threads at the tail end of the connecting stud 2-3 of the first connecting rod and the lightning rod are tightened, the spring is compressed and its ends abut the first and second stops, respectively, thereby ensuring stability as the pulley slides up and down the chute and ensuring secure contact with the chute during sliding.

[0038] In one embodiment, the second connecting rod and the pulley are connected by a U-shaped connecting piece, so that the pulley is fixed to the end of the second connecting rod and can slide along the sliding groove, but this description should not be regarded as a limitation of the present invention.

[0039] In one embodiment, the connecting pipe 5, the elastic connecting mechanism, the pulley 6, the slide groove 9, and the spring 10 are all made of metal, but this description should not be regarded as a limitation of the present invention.

[0040] In the above technical solution, the lightning rod on the top of the sail blade is connected to the metal mesh on the surface of the sail blade to form a multi-path connection channel, forming a large-area protection network. The charges received by multiple lightning rods form an electric current that is connected and conducted through the cables, and finally transmitted to the connecting stud of the lightning rod connected to the elastic connection mechanism, and then transmitted to the pulley, chute and metal belt through the elastic connection mechanism. The metal belt is grounded, and finally the current is discharged into the ground to achieve a lightning protection effect.

[0041] In other embodiments, the upper sail blade, the middle sail blade and the lower sail blade are all provided with the metal mesh. At this time, the metal mesh of the upper sail blade, the metal mesh of the middle sail blade and the metal mesh of the lower sail blade are independently arranged and independently connected to the metal belt, which does not affect the raising and lowering of the wing sail blade. In one embodiment, the metal mesh on the middle and lower sail blades utilizes the same arrangement and connection method as the metal mesh on the upper sail blade, including the aforementioned longitudinal metal mesh, transverse metal mesh, cables, connecting tubes, elastic connection structures, pulleys, and the like. The placement and connection method of each component are identical to those of the corresponding components on the upper sail blade, except that the lightning rod on the upper sail blade is entirely replaced with a stud connector. This stud connector performs the same function as the connecting studs 2-3 on the lightning rod, with one end having a larger diameter for contact and connection with the outer connecting plate. The other end of at least one stud connector on the middle and lower sail blades is connected to the elastic connection mechanism, which is connected to the corresponding pulley. When the sail blades are raised or lowered, the pulleys can slide longitudinally along the chute, ensuring uninterrupted connection and conduction while the sail blades are raised or lowered. This will not be described in detail here. If the upper sail blade is movably attached to the outside of the middle sail blade, and the middle sail blade is movably attached to the outside of the lower sail blade, the inner connecting plate, outer connecting plate, and lightning rod (or stud connector) can be positioned above the corresponding sail blades without affecting the raising or lowering of the sail blades.

[0042] This new design incorporates an additional metal mesh on the sail blades, forming a large-scale protective network. This allows for rapid discharge of electrical charge after a lightning strike, effectively protecting the blades. When the wing sail blades are raised or lowered, they drive pulleys along the chute provided on the metal belt. A spring on the elastic connection mechanism holds the pulleys in close contact with the chute, ensuring the stability of the pulleys during the raising and lowering of the sail blades. This ensures secure contact with the chute during the sliding movement, ensuring uninterrupted connection and conduction during the raising and lowering of the wing sail blades. This also avoids the redundant down conductors and unstable shaking that can occur with conventional down conductor grounding. This new design provides all-round lightning protection for the wing sail, ensuring safety, reliability, and a long service life.

[0043] The above description is merely an embodiment of the present invention and does not constitute any form of limitation to the present invention. The present invention may also have other forms of embodiments based on the above structures and functions, which are not listed one by one. Therefore, any simple modification, equivalent change, and modification made by any person skilled in the art to the above embodiment based on the technical essence of the present invention without departing from the scope of the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A wing sail lightning protection system, characterized in that The invention comprises a wing sail blade (1), a lightning rod (2), a metal mesh (3), a cable (4), a connecting pipe (5), an elastic connecting mechanism, a pulley (6), a metal belt (7), a mast (8), and a chute (9); the wing sail blade (1) comprises at least an upper sail blade (1-1) and a lower sail blade (1-2); the lightning rod is arranged on the outer side of the top of the upper sail blade, and comprises a lightning rod chassis (2-1), a lightning ball (2-2), a connecting stud (2-3), and a needle part (2-4); the metal mesh (3) is arranged on the outer surface of the upper sail blade, and comprises a transverse metal mesh and a longitudinal metal mesh, and the transverse metal mesh and the longitudinal metal mesh are arranged in a crisscross manner to form a connected network, and the setting position of the longitudinal metal mesh corresponds to the position of the lightning rod and is connected to the connecting stud (2-3) of the lightning rod; a plurality of lightning rods are arranged along the upper sail blade. The connecting tubes (5) are connected to the tail of the lightning rod connecting studs (2-3), and the conductors at both ends of the cable are respectively passed through the connecting tubes on the two adjacent lightning rod connecting studs and are crimped and fixed by the corresponding connecting studs, thereby realizing the connection and conduction of the two adjacent lightning rods; the tail end of the connecting stud of at least one lightning rod is also connected to the elastic connecting mechanism, and the other end of the elastic connecting mechanism is connected to the pulley (6), and a metal belt (7) is longitudinally bonded to the mast (8), the bottom of the metal belt (7) is grounded, and a slide groove (9) is also provided on the metal belt, and the pulley (6) can slide longitudinally along the slide groove (9). The charge received by the metal mesh and the lightning rod is finally transmitted to the pulley, the slide groove, and the metal belt in sequence through the elastic connecting mechanism, and is discharged into the ground through the metal belt.

2. The wingsail lightning protection system according to claim 1, characterized in that The intersection of the transverse metal mesh and the longitudinal metal mesh is welded.

3. The wingsail lightning protection system according to claim 1, characterized in that The cable (4) is fixed to the inner wall of the upper sail blade.

4. The wingsail lightning protection system according to claim 1, characterized in that The lightning ball (2-2) is arranged in the middle of the needle part (2-4), the lightning rod chassis (2-1) is arranged on the connecting stud (2-3), and the axial direction of the connecting stud (2-3) and the axial direction of the needle part (2-4) are perpendicular to each other.

5. The wingsail lightning protection system according to claim 1, characterized in that The upper sail blade is integrally formed with the inner connecting plate, the metal mesh and the outer connecting plate by injection molding. The inner connecting plate is arranged between the upper sail blade and the longitudinal metal mesh, and the longitudinal metal mesh is arranged between the inner connecting plate and the outer connecting plate. The outer connecting plate is provided with a screw hole I, and the inner connecting plate is provided with a screw hole II. The connecting studs (2-3) of the lightning rod pass through the screw hole I on the outer connecting plate, the longitudinal metal mesh, the screw hole II on the inner connecting plate, and the screw hole III on the upper sail blade in sequence. After the connecting studs are screwed with the screw holes I, II and III, the outer connecting plate is directly contacted and connected with the lightning rod chassis (2-1).

6. The wingsail lightning protection system according to claim 1 or 5, characterized in that One or more intermediate sail blades are provided between the upper sail blade and the lower sail blade.

7. The wingsail lightning protection system according to claim 6, characterized in that The upper sail blade, the middle sail blade and the lower sail blade are all provided with the metal mesh, and the metal mesh of the upper sail blade, the metal mesh of the middle sail blade and the metal mesh of the lower sail blade are independently provided and independently connected to the metal belt, which does not affect the lifting of the wing sail blade.

8. The wingsail lightning protection system according to claim 1, characterized in that The elastic connection mechanism comprises a spring (10), a first connecting rod (11), and a second connecting rod (12). The first connecting rod and the second connecting rod are movably connected, and the spring is arranged between the first connecting rod and the second connecting rod. After the first connecting rod and the second connecting rod are installed in place, the spring is in a compressed state.

9. The wingsail lightning protection system according to claim 8, characterized in that One end of the first connecting rod is threadedly connected to the tail end of the connecting stud of the lightning rod, and the other end is connected to a sliding rod (13). The other end of the sliding rod is sleeved in the inner hole of one end of the second connecting rod, and the other end of the second connecting rod is connected to the pulley; the spring (10) is sleeved on the outer periphery of the sliding rod and its two ends respectively abut against the ends of the first connecting rod and the second connecting rod.

10. The wingsail lightning protection system according to claim 1, characterized in that The connecting pipe, elastic connecting mechanism, pulley and slide groove are all made of metal.

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