A lightning protection device for a wind turbine blade tip

Abstract

The embodiment of the application provides a wind power blade tip lightning protection device, which is applied to a wind power blade of a wind power generation equipment, and has a corresponding mounting back plate, a mounting fixed plate on the surface of the mounting back plate, a pushing structure on the surface of the mounting fixed plate, a sliding structure on the pushing structure, a lightning protection tip and a pushing motor connected with the sliding structure; a rotatable fixed base is arranged on the surface of the mounting back plate away from the mounting fixed plate; a counterweight is mounted at one end away from the rotatable fixed base; the pushing structure is fixed to the mounting fixed plate; the pushing structure is driven by the pushing motor to control the lightning protection tip to move in a preset direction of the mounting back plate. The sliding structure limits the telescopic movement; the fixed base fixedly connects the wind power blade tip lightning protection device and the wind power blade; the counterweight rotates the fixed base through gravity, controls the lightning protection tip to be perpendicular to the ground upward, so that the wind power blade is prevented from being damaged by lightning, and the service life of the wind power blade is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wind power blade tip lightning protection device design, in particular to a wind power blade tip lightning protection device and a wind power generation equipment. BACKGROUND

[0002] The wind power blade is the most basic and critical part of the wind power generation equipment. Since the wind power blade needs to run continuously in harsh environment for a long time, it needs to have the characteristics of light density, good fatigue strength and mechanical properties, corrosion resistance and good lightning resistance. However, due to the huge energy released by lightning, the temperature of the wind power blade structure rises sharply, the high-temperature expansion of the decomposition gas rises, and the pressure rises to cause burst damage, resulting in damage to the wind power blade.

[0003] At present, the existing wind power blade is equipped with lightning protection equipment at the tip position during use, and the lightning protection equipment installed at the tip is retracted into the tip during non-use, so as to reduce the influence of the outside on the lightning protection equipment during use, but the side end hole position is easy to deposit rainwater in rainy days, thereby causing corrosion and rust to the internal lightning protection equipment, thereby causing the device to change in volume, resulting in the lightning protection equipment cannot be normally ejected. SUMMARY

[0004] The embodiment of the present application provides a wind power blade tip lightning protection device and a wind power generation equipment to overcome the above problems or at least partially solve the above problems.

[0005] The embodiment of the present application discloses a wind power blade tip lightning protection device, which can be applied to a wind power blade of a wind power generation equipment, and has a corresponding mounting back plate, a fixed plate is fixedly installed on the surface of the mounting back plate, a pushing structure is installed on the surface of the fixed plate, the pushing structure has a corresponding sliding structure, one end of the sliding structure is fixedly connected with a lightning tip, and the other end is fixedly connected with a pushing motor; a rotatable fixed base is arranged on the surface of the mounting back plate away from the fixed plate; a counterweight is installed at one end away from the rotatable fixed base;

[0006] The fixed plate is used for fixing the pushing structure;

[0007] The pushing structure is used for controlling the lightning tip to move in extension and retraction along the mounting back plate in a preset direction under the driving of the pushing motor;

[0008] The sliding structure is used for limiting the extension and retraction movement forward and backward;

[0009] The rotatable fixed base fixedly connects the wind power blade tip lightning protection device and the wind power blade through bolts;

[0010] The counterweight is used to rotate the rotatable fixed base by gravity, and control the lightning rod to be vertically upward to the ground.

[0011] Optionally, the installation back plate surface can be provided with an installation slot, the pushing structure includes a sliding column and a conductive push rod, the sliding column and the lightning rod are fixedly connected, the sliding column and the installation slot are nested and installed, and the sliding column is used for vertically limiting the telescopic movement; one end of the conductive push rod is connected with the pushing motor, and the other end is connected with the sliding column; the conductive push rod is used for driving the sliding column to telescopically move along the limiting direction of the installation slot when the pushing motor is started.

[0012] Optionally, a groove can be arranged in the installation slot, and a limiting rod is arranged on the surface of the sliding column; the limiting rod and the groove are nested and installed, and are used for preventing the sliding column from rolling.

[0013] Optionally, the sliding structure can include a pushing rod and a rotating structure; the pushing rod is nested and connected with the fixed plate; the pushing rod is overlapped with the rotating structure through an auxiliary support; the rotating structure includes a rotating motor and a rotating knob; the rotating motor and the rotating knob are fixedly connected; when the rotating motor is started, the rotating knob is rotated to a vertical state, and the auxiliary support drives the pushing rod to expand and move along the limiting direction of the fixed plate.

[0014] Optionally, the fixed plate can be provided with a limiting ring, and the limiting ring is used for limiting the expansion movement.

[0015] Optionally, a reserved slot can be formed in the surface of the pushing rod; the fixed plate is provided with a blocking plate and a spring; one end of the spring is fixedly connected with the blocking plate, and the other end is fixedly connected with the inner wall of the reserved slot; when the rotating motor is started and the rotating knob is rotated to a horizontal state, the spring drives the pushing rod to shrink and move along the limiting direction of the fixed plate.

[0016] Optionally, an inclined slope can be arranged at the end of the pushing rod away from the auxiliary support; a clamping groove is arranged on the surface of the sliding column; when the sliding column is retracted, the sliding column is in sliding contact with the inclined slope, the pushing rod is lifted until the inclined slope slides into the clamping groove, and the sliding column is locked under the driving of the spring.

[0017] Optionally, the installation back plate can be provided with a polishing sleeve ring; the polishing sleeve ring is sleeved with the lightning rod; when the sliding column telescopically moves along the limiting direction of the installation slot, the polishing sleeve ring polishes the lightning rod.

[0018] Optionally, the electrically conductive push rod and the sliding column can be connected by an electrically conductive core for transmitting the current of the lightning rod to a grounding device.

[0019] The embodiment of the present application also discloses a wind power generation device, which comprises the wind blade lightning rod device.

[0020] The embodiment of the present application has the following advantages:

[0021] The embodiment of the present application has the following advantages: BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative labor.

[0023] Figure 1 is a structural schematic diagram of a wind blade lightning rod device provided in the embodiment of the present application;

[0024] Figure 2 is a structural schematic diagram of a wind blade lightning rod device provided in the embodiment of the present application;

[0025] Figure 3 is a structural schematic diagram of an installation back plate provided in the embodiment of the present application;

[0026] Figure 4 is a structural schematic diagram of a push structure provided in the embodiment of the present application;

[0027] Figure 5 is a structural schematic view of a sliding structure provided in an embodiment of the present application;

[0028] Figure 6 is a structural schematic view B of a pushing structure provided in an embodiment of the present application.

[0029] Reference signs:

[0030] mounting back plate 1, mounting groove 11, screw thread 12, fixed plate 13, blocking plate 14, spring 15, limiting ring 16, pushing rod 17, reserved groove 18, rotating motor 2, rotating knob 21, auxiliary supporting rod 22, contact block 23, sliding column 24, clamping groove 25, limiting rod 26, conductive core 27, pushing motor 3, conductive pushing rod 31, lightning rod tip 32, polishing collar 33, counterweight 34, limiting groove 35, rotating rod 36, fixed base 37. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0032] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0033] In practical applications, the wind power blade is one of the most important components of a wind power generation device, such as a wind turbine, and is also the component most susceptible to lightning strikes. Lightning strikes can cause damage to the wind turbine blade, and the large current generated by lightning strikes can penetrate the blade, causing the blade surface to burn, break or even crumble. In addition, lightning strikes can cause damage to the internal electrical system of the blade, such as insulation breakdown and component burning. Furthermore, the high temperature generated by lightning strikes can also cause a fire in the blade. Lightning protection for wind power blades can effectively reduce the damage caused by lightning strikes to wind turbine blades and improve the safety and operational reliability of wind turbines. Lightning current can be guided into the ground using lightning rods and down conductors to protect the blade from lightning strikes. Currently, lightning protection for wind power blades typically involves installing lightning protection equipment inside the blade, which extends or retracts through a hole in the surface of the blade during operation. However, the hole in the surface of the blade can easily cause rainwater to accumulate, which can enter the interior of the blade and corrode the internal lightning protection equipment, causing the lightning protection equipment to rust, affecting the normal extension of the lightning protection equipment and weakening the lightning attraction capability of the lightning rod. Furthermore, due to the complex structure, the installation and maintenance costs are high. The embodiment of the present application provides a wind power blade tip lightning protection device that can overcome the above problems.

[0034] Referring to Figure 1 , a structural schematic diagram A of a wind power blade tip lightning protection device provided in an embodiment of the present application is shown; referring to Figure 2 , a structural schematic diagram B of a wind power blade tip lightning protection device provided in an embodiment of the present application is shown; the wind power blade tip lightning protection device is applied to a wind power blade of a wind power generation device, and the wind power blade tip lightning protection device has a corresponding installation back plate 1, a fixed plate 13 is fixedly installed on the surface of the installation back plate 1, a pushing structure is installed on the surface of the fixed plate 13, the pushing structure has a corresponding sliding structure, one end of the sliding structure is fixedly connected with a lightning rod 32, and the other end is fixedly connected with a pushing motor 3; a rotatable fixed base is arranged on the surface of the installation back plate 1 away from the fixed plate 13; and a counterweight 34 is installed on the end away from the rotatable fixed base;

[0035] The fixed plate 13 is used for fixing the pushing structure;

[0036] The pushing structure is used for controlling the lightning rod 32 to move in a telescopic manner along the installation back plate 1 in a preset direction under the driving of the pushing motor 3;

[0037] The sliding structure is used for limiting the telescopic movement in front and back directions;

[0038] The rotatable fixed base is fixedly connected with the wind power blade tip lightning protection device and the wind power blade through bolts;

[0039] The counterweight 34 is used to rotate the rotatable fixed base by gravity, and control the lightning rod 32 to be vertically upward to the ground.

[0040] In a specific implementation, the wind power generation device in the embodiment of the application can be a wind turbine, and the wind turbine blade lightning rod device is applied to the wind turbine blade of the wind power generation device. The wind turbine blade lightning rod device has a corresponding mounting back plate 1, the surface of the mounting back plate 1 is fixedly provided with a fixed plate 13, the surface of the fixed plate 13 is provided with a pushing structure, the pushing structure has a corresponding sliding structure, one end of the sliding structure is fixedly connected with the lightning rod 32, and the other end of the sliding structure is fixedly connected with a pushing motor 3. The pushing motor 3 can be an electric motor that converts electrical energy into mechanical energy, so as to realize pushing and pulling in a fixed direction. The surface of the mounting back plate 1 away from the fixed plate 13 is provided with a rotatable fixed base. A counterweight 34 is installed at one end away from the rotatable fixed base. The fixed plate 13 is used to fix the pushing structure. The pushing structure is used to control the lightning rod 32 to move in a telescopic manner in a preset direction of the mounting back plate 1 under the driving of the pushing motor 3. Preferably, the lightning rod can be in a state that one end is sharp and the other end is blunt. The sharp end is used as a lightning rod, and the blunt end is fixedly connected with the sliding structure, so as to improve the lightning rod capability. The sliding structure is used to limit the telescopic movement in the front and back directions. The rotatable fixed base is fixedly connected with the wind turbine blade lightning rod device and the wind turbine blade through bolts. The counterweight 34 is used to rotate the rotatable fixed base by gravity, and control the lightning rod 32 to be vertically upward to the ground. Illustratively, the rotatable fixed base can include a fixed base 37 and a rotating rod 36. The surface of the mounting back plate 1 close to the rotatable fixed base can be provided with a limiting groove 35. The limiting groove 35 and the rotating rod 36 are nested and connected. The limiting groove 35 and the rotating rod 36 are provided with holes at the same position in the projection plane. The limiting groove 35 and the rotating rod 36 can be fixed through bolts. One end of the rotating rod 36 away from the limiting groove 35 is fixedly connected with the fixed base 37. The fixed base 37 is fixedly connected with the wind turbine blade lightning rod device and the wind turbine blade through bolts, so that the wind turbine blade lightning rod device can automatically adjust the direction based on the counterweight 34 according to gravity. The direction of the counterweight 34 to the rotatable fixed base is opposite to the direction of the lightning rod 32 to the rotatable fixed base, so that the lightning rod 32 is always vertically upward to the ground, and points to the sky, thereby improving the lightning rod capability.

[0041] Preferably, the pushing motor 3 can be remotely started by manual instructions, or can be automatically started through meteorological information. Of course, the above is only an example, and those skilled in the art can control the pushing motor 3 to start in other ways, which are not limited by the embodiment of the application.

[0042] The wind power blade tip lightning arrester device is applied to a wind power blade of a wind power generation device, the wind power blade tip lightning arrester device has a corresponding mounting back plate, a fixed plate is fixedly installed on the surface of the mounting back plate, a pushing structure is installed on the surface of the fixed plate, the pushing structure has a corresponding sliding structure, one end of the sliding structure is fixedly connected with a lightning tip, and the other end is fixedly connected with a pushing motor, a rotatable fixed base is arranged on the surface of the mounting back plate away from the fixed plate, a counterweight is installed away from the rotatable fixed base, the fixed plate is used for fixing the pushing structure, the pushing structure is used for controlling the lightning tip to move up and down along the mounting back plate in a preset direction under the driving of the pushing motor, the sliding structure is used for limiting the up-and-down movement, the rotatable fixed base is fixedly connected with the wind power blade tip lightning arrester device and the wind power blade through bolts, and the counterweight is used for rotating the rotatable fixed base through gravity, controlling the lightning tip to be perpendicular to the ground, thereby avoiding the wind power blade from being damaged by lightning and improving the service life of the wind power blade.

[0043] On the basis of the above-mentioned embodiments, variant embodiments of the above-mentioned embodiments are proposed, and it should be noted that, in order to make the description brief, only differences from the above-mentioned embodiments are described in the variant embodiments.

[0044] Reference Figure 3 , Figure 3 A structure diagram of a mounting back plate provided in an embodiment of the application is shown. Figure 4 , Figure 4 A structure diagram A of a pushing structure provided in an embodiment of the application is shown.

[0045] In an optional embodiment of the application, the surface of the mounting back plate 1 is provided with a mounting groove 11, the pushing structure includes a sliding column 24 and a conductive push rod 31, the sliding column 24 is fixedly connected with the lightning tip 32, the sliding column 24 and the mounting groove 11 are nested and installed, are used for limiting the up-and-down movement, one end of the conductive push rod 31 is connected with the pushing motor 3, the other end is connected with the sliding column 24, and the conductive push rod 31 is used for driving the sliding column 24 to move up and down along the mounting groove 11 in a limiting direction when the pushing motor 3 is started.

[0046] In actual application, in order to reduce the resistance of the wind power blade in operation and avoid accidental collision, the lightning protection equipment is usually retracted when the lightning protection equipment is not used.

[0047] In a specific implementation, the surface of the mounting back plate 1 is provided with a mounting groove 11, the pushing structure includes a sliding column 24 and a conductive push rod 31, the sliding column 24 and the lightning rod 32 are fixedly connected, the sliding column 24 and the mounting groove 11 are nested and mounted, and are used for vertically limiting the telescopic movement, one end of the conductive push rod 31 is connected with the pushing motor 3, and the other end is connected with the sliding column 24, the conductive push rod 31 is used for driving the sliding column 24 to move in the telescopic movement direction of the mounting groove 11 when the pushing motor 3 is started, and the material of the lightning rod 32 can be a metal with good conductivity and corrosion resistance, for example, copper, and / or stainless steel, and the like, one end of the sliding column 24 close to the lightning rod 32 can be provided with a threaded structure, one end of the lightning rod 32 close to the sliding column 24 can also be provided with a threaded structure, the sliding column 24 and the lightning rod 32 can be fixedly screwed through the threaded structure, the sliding column 24 can be nested in the mounting groove 11 and move in the telescopic movement direction of the mounting groove 11, when one end of the conductive push rod 31 is subjected to the pushing force of the pushing motor 3, the sliding column 24 can be pushed, so that the lightning rod 32 is extended, and when one end of the conductive push rod 31 is subjected to the pulling force of the pushing motor 3, the sliding column 24 can be pulled, so that the lightning rod 32 is retracted.

[0048] In the embodiment of the application, the surface of the mounting back plate is provided with a mounting groove, the pushing structure includes a sliding column and a conductive push rod, the sliding column and the lightning rod are fixedly connected, the sliding column and the mounting groove are nested and mounted, and are used for vertically limiting the telescopic movement, one end of the conductive push rod is connected with the pushing motor, and the other end is connected with the sliding column, the conductive push rod is used for driving the sliding column to move in the telescopic movement direction of the mounting groove when the pushing motor is started, so that the extension and recovery of the lightning protection device are realized.

[0049] In an optional embodiment of the application, the mounting groove 11 is provided with a groove, the surface of the sliding column 24 is provided with a limiting rod 26, the limiting rod 26 and the groove are nested and mounted, and are used for preventing the sliding column 24 from rolling.

[0050] In a specific implementation, the mounting groove 11 in the embodiment of the application is provided with a groove, the surface of the sliding column 24 is provided with a limiting rod 26, the limiting rod 26 and the groove are nested and mounted, and are used for preventing the sliding column 24 from rolling, and the groove can play a role of a track when the limiting rod 26 and the groove inside the mounting groove 11 are nested and mounted, the movement direction of the sliding column 24 is limited, so that the sliding column 24 is prevented from rolling, and the lightning rod 32 connected with the sliding column 24 is further prevented from rolling.

[0051] The embodiment of the present application is characterized in that the installation groove 11 is provided with a groove, the sliding column 24 is provided with a limiting rod 26 on the surface, and the limiting rod 26 and the groove are nested and installed, so as to prevent the sliding column 24 from rolling, thereby improving the stability and reliability of the whole device.

[0052] Reference Figure 5 , Figure 5 The structural schematic diagram of the sliding structure provided by the embodiment of the present application is shown.

[0053] In an optional embodiment of the present application, the sliding structure comprises a pushing rod 17 and a rotating structure, the pushing rod 17 is nested and connected with the fixed plate 13, the pushing rod 17 is overlapped with the rotating structure through an auxiliary support rod 22, the rotating structure comprises a rotating motor 2 and a rotating tab 21, the rotating motor 2 is fixedly connected with the rotating tab 21, when the rotating motor 2 is started, the rotating tab 21 is rotated to tend to be vertical, and the auxiliary support rod 22 drives the pushing rod 17 to move along the limiting direction of the fixed plate 13.

[0054] In a specific implementation, the sliding structure in the embodiment of the present application comprises a pushing rod 17 and a rotating structure, the pushing rod 17 is nested and connected with the fixed plate 13, the pushing rod 17 is overlapped with the rotating structure through an auxiliary support rod 22, the rotating structure comprises a rotating motor 2 and a rotating tab 21, the rotating motor 2 is fixedly connected with the rotating tab 21, when the rotating motor 2 is started, the rotating tab 21 is rotated to tend to be vertical, and the auxiliary support rod 22 drives the pushing rod 17 to move along the limiting direction of the fixed plate 13, exemplarily, the rotating motor 2 can be a device for converting computer into mechanical energy, to realize rotation around a fixed point, the pushing rod 17 can be fixedly installed with the auxiliary support rod 22, preferably, the end of the auxiliary support rod 22 away from the pushing rod 17 can be provided with a contact block 23, the contact block 23 can be installed on the outer surface of the rotating tab 21 and abuts against the rotating tab 21, the side end of the rotating motor 2 can be connected with the rotating tab 21, when the rotating motor 2 is started, the tab is rotated by the rotating motor 2, the rotating tab 21 can be an oval cam, when the rotating tab 21 is rotated to tend to be vertical, for example, when the long diameter of the oval cam is parallel to the ground, the distance between the two pushing rods 17 can be pulled away through the auxiliary support rod 22, so that the pushing rod 17 moves along the limiting direction of the fixed plate 13, thereby releasing the limiting of the sliding column 24.

[0055] Preferably, the rotating motor 2 can be remotely started by manual instruction, or automatically started by weather information, of course, the above is only an example, and the person skilled in the art can control the rotating motor 2 to start in other ways, which is not limited by the embodiment of the present application.

[0056] In this embodiment of the invention, the sliding structure includes a push rod and a rotating structure. The push rod is nested and connected to the fixed plate. The push rod is connected to the rotating structure via an auxiliary support rod. The rotating structure includes a rotating motor and a rotating paddle. The rotating motor and the rotating paddle are fixedly connected. When the rotating motor is started, the rotating paddle rotates to a near-vertical state. The auxiliary support rod drives the push rod to unfold and move along the limiting direction of the fixed plate, thereby enabling the push rod to unfold and releasing the limitation on the telescopic movement of the push structure.

[0057] In another optional embodiment of the invention, the fixing plate 13 is provided with a limiting ring 16, which is used to limit the unfolding movement.

[0058] In a specific implementation, the fixing plate 13 in this embodiment of the invention is equipped with a limiting ring 16. The limiting ring 16 is used to limit the unfolding movement. For example, the limiting ring 16 can be fixedly installed on the side end of the fixing plate 13. The limiting ring 16 can be located on the unfolding movement path of the push rod 17. When the push rod 17 reaches the position of the limiting ring 16, it can abut against the push rod 17, thereby limiting the maximum unfolding position of the push rod 17 and preventing the push rod 17 from coming out.

[0059] In this embodiment of the invention, by configuring a limiting ring on the fixed plate, the limiting ring is used to limit the unfolding movement, thereby preventing the push rod from coming off and falling, and improving the stability and reliability of the device structure.

[0060] In an optional embodiment of the present invention, a reserved groove 18 is provided on the surface of the push rod 17, and the fixing plate 13 is provided with a blocking plate 14 and a spring 15. One end of the spring 15 is fixedly connected to the blocking plate 14, and the other end is fixedly connected to the inner wall of the reserved groove 18. When the rotating motor 2 starts and rotates the rotating paddle 21 to a near-horizontal state, the spring 15 drives the push rod 17 to retract and move along the limiting direction of the fixing plate 13.

[0061] In a specific implementation, the pushing rod 17 in the embodiment of the present application is provided with a reserved groove 18 on the surface, the fixed plate 13 is provided with a blocking plate 14 and a spring 15, one end of the spring 15 is fixedly connected with the blocking plate 14, and the other end is fixedly connected with the inner wall of the reserved groove 18, when the rotating motor 2 starts to rotate the rotating knob 21 to a horizontal state, the spring 15 drives the pushing rod 17 to move in the limiting direction of the fixed plate 13, for example, the reserved groove 18 can be provided on the side end of the pushing rod 17, the fixed plate 13 can be provided with the blocking plate 14 and the spring 15, one end of the spring 15 is fixedly connected with the blocking plate 14, and the other end is fixedly connected with the inner wall of the reserved groove 18, when the auxiliary support rod 22 drives the pushing rod 17 to move, the spring 15 in the reserved groove 18 is extruded, when the rotating motor 2 starts to rotate the rotating knob 21 to a horizontal state, for example, when the rotating knob 21 is an oval cam, the rotating motor 2 rotates the shorter diameter of the rotating knob 21 to a parallel state with the ground, then the spring 15 can restore the pushing rod 17 to move in the limiting direction of the fixed plate 13, so as to realize the movement of the pushing rod 17 to limit the extension and contraction movement of the pushing structure, and the blocking plate 14 can effectively prevent the pushing rod 17 from being excessively contracted.

[0062] In the embodiment of the present application, the pushing rod is provided with a reserved groove on the surface, the fixed plate is provided with a blocking plate and a spring, one end of the spring is fixedly connected with the blocking plate, and the other end is fixedly connected with the inner wall of the reserved groove, when the rotating motor starts to rotate the rotating knob to a horizontal state, the spring drives the pushing rod to move in the limiting direction of the fixed plate, so as to realize the movement of the pushing rod to limit the pushing structure.

[0063] In an optional embodiment of the present application, one end of the pushing rod 17 away from the auxiliary support rod 22 is provided with a slope, the surface of the sliding column 24 is provided with a clamping groove 25, when the sliding column 24 is retracted, the sliding column 24 is in sliding contact with the slope, the pushing rod 17 is lifted until the slope slides into the clamping groove 25, and the sliding column 24 is locked under the driving of the spring 15.

[0064] In a specific implementation, one end of the pushing rod 17 away from the auxiliary support rod 22 is provided with a slope, and the surface of the sliding column 24 is provided with a clamping groove 25. When the sliding column 24 is retracted, the sliding column 24 is in sliding contact with the slope, the pushing rod 17 is lifted, and the slope is slid into the clamping groove 25. The sliding column 24 is locked under the driving of the spring 15. When the lightning rod 32 needs to be retracted, the electric motor 3 retracts the sliding column 24 to retract the lightning rod 32 into the mounting back plate 1. The sliding column 24 is in sliding contact with the slope on the surface of the pushing rod 17, the pushing rod 17 is lifted, and the pushing rod 17 is pushed into the reserved groove 18 by the pushing force of the spring 15. The pushing rod 17 is in close contact with the sliding column 24 until the slope is slid into the clamping groove 25 on the surface of the sliding column 24, and the sliding column 24 is locked and positioned.

[0065] In the embodiment of the application, one end of the pushing rod away from the auxiliary support rod is provided with a slope, the surface of the sliding column is provided with a clamping groove, the sliding column is in sliding contact with the slope when the sliding column is retracted, the pushing rod is lifted until the slope is slid into the clamping groove, and the sliding column is locked under the driving of the spring. The lightning rod is not accidentally ejected after being retracted, and the stability and reliability of the device are improved.

[0066] Reference Figure 6 , Figure 6 A structure diagram of a pushing structure provided in the embodiment of the application is shown.

[0067] In an optional embodiment of the application, the mounting back plate 1 is provided with a polishing sleeve 33, the polishing sleeve 33 is sleeved with the lightning rod 32, and the polishing sleeve 33 polishes the lightning rod 32 when the sliding column 24 moves in the extension direction of the mounting groove 11.

[0068] In actual application, polishing the lightning rod can effectively improve the smoothness of the lightning rod and reduce resistance. Because the lightning rod needs to withstand the strong impact force of lightning, the surface of the lightning rod needs to be smooth to reduce resistance. Polishing can remove defects such as roughness and burrs on the surface of the lightning rod, so that the surface of the lightning rod is smoother, thereby reducing the flow resistance of lightning current on the surface of the lightning rod and making the lightning current more smoothly drain into the ground. Meanwhile, the smooth surface can enhance the conductivity, so that the lightning current is more evenly distributed on the surface of the lightning rod, avoiding local overheating or breakdown. Polishing can remove the oxide layer and other impurities on the surface of the lightning rod, so that the surface of the lightning rod is cleaner, thereby improving the conductivity. However, regular manual polishing increases maintenance costs and is difficult to operate.

[0069] In a specific implementation, the mounting back plate 1 in the embodiment of the present application is provided with a polishing sleeve 33, the polishing sleeve 33 is sleeved with the lightning rod 32, when the sliding column 24 moves in the limiting direction of the mounting groove 11, the polishing sleeve 33 polishes the lightning rod 32, for example, the mounting back plate 1 can be provided with the polishing sleeve 33, preferably, the polishing sleeve 33 can be twisted with the thread 12 engraved in the mounting groove 11 of the mounting back plate 1, so as to facilitate replacement, the polishing sleeve 33 can be sleeved with the lightning rod 32, further, the polishing sleeve 33 can be made of stainless steel, carbon steel, aluminum alloy and other hard and corrosion-resistant materials, the inner diameter of the polishing sleeve 33 can be consistent with the maximum outer diameter of the lightning rod 32, when the sliding column 24 moves in the limiting direction of the mounting groove 11, the lightning rod 32 is driven to pass through the polishing sleeve 33, the polishing sleeve 33 can polish the outer surface of the lightning rod 32 each time the lightning rod 32 passes through the polishing sleeve 33.

[0070] In the embodiment of the present application, the mounting back plate is provided with a polishing sleeve, the polishing sleeve is sleeved with the lightning rod, when the sliding column moves in the limiting direction of the mounting groove, the polishing sleeve polishes the lightning rod, thereby realizing rust removal and polishing for the lightning rod, and further improving the lightning protection effect and service life of the device.

[0071] In an optional embodiment of the present application, the conductive push rod 31 and the sliding column 24 are connected through the conductive core 27, for transmitting the current of the lightning rod 32 to the grounding device.

[0072] In actual application, the conductivity of the lightning protection equipment is the key to the lightning protection effect of the lightning protection equipment, the lightning protection equipment safely discharges lightning current into the ground through conduction, thereby protecting the equipment from lightning hazards.

[0073] In a specific implementation, the conductive push rod 31 and the sliding column 24 in the embodiment of the present application are connected through the conductive core 27, for transmitting the current of the lightning rod 32 to the grounding device, for example, the conductive push rod 31 and the conductive core 27 can be made of materials with good conductivity, the conductive push rod 31 and the sliding column 24 can be connected through the conductive core 27, realizing conduction of lightning, transmitting the current of the lightning rod 32 to the grounding device, and through the setting of the conductive core 27, the replacement of the sliding column 24 is facilitated.

[0074] In the embodiment of the present application, the conductive push rod and the sliding column are connected through the conductive core, for transmitting the current of the lightning rod to the grounding device, thereby realizing the conductivity continuity of the lightning protection device, and improving the convenience of device maintenance.

[0075] The embodiment of the application further discloses a wind power generation equipment, which comprises the wind power blade tip lightning protection device.

[0076] Although the preferred embodiments of the embodiments of the application have been described, those skilled in the art who are familiar with the basic inventive concept can make additional changes and modifications to the embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the application.

[0077] Finally, it should also be noted that in this document, the terms "comprise", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or terminal device. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of other identical elements in the process, method, article or terminal device comprising the element.

[0078] The above is only a specific embodiment of the application, but the protection scope of the application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the application, which should be covered within the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A wind turbine blade tip lightning protection device, characterized in that, The wind power blade tip lightning protection device is applied to a wind power blade of a wind power generation device, and has a corresponding mounting back plate, a fixed plate is fixedly mounted on the surface of the mounting back plate, a pushing structure is mounted on the surface of the fixed plate, the pushing structure has a corresponding sliding structure, one end of the sliding structure is fixedly connected with a lightning protection tip, and the other end is fixedly connected with a pushing motor; a rotatable fixed base is arranged on the surface of the mounting back plate away from the fixed plate; and a counterweight is mounted at the end away from the rotatable fixed base. The fixed plate is used for fixing the pushing structure. The pushing structure is used for controlling the lightning protection tip to move up and down along the mounting back plate in a preset direction under the driving of the pushing motor. The sliding structure is used for limiting the up-and-down movement. The rotatable fixed base is fixedly connected with the wind power blade tip lightning protection device and the wind power blade through bolts. The counterweight is used for rotating the rotatable fixed base through gravity and controlling the lightning protection tip to be perpendicular to the ground. A mounting groove is arranged on the surface of the mounting back plate, the pushing structure comprises a sliding column and a conductive push rod, the sliding column is fixedly connected with the lightning protection tip, and the sliding column and the mounting groove are nested and mounted, and are used for limiting the up-and-down movement in the vertical direction, one end of the conductive push rod is connected with the pushing motor, and the other end is connected with the sliding column, and the conductive push rod is used for driving the sliding column to move up and down along the mounting groove in the limiting direction when the pushing motor is started.

2. Wind turbine blade lightning tip protection according to claim 1, characterized in that A groove is arranged in the mounting groove, a limiting rod is arranged on the surface of the sliding column, and the limiting rod and the groove are nested and mounted, and are used for preventing the sliding column from rolling.

3. A wind turbine blade lightning tip protection device according to claim 1, characterised in that, The sliding structure comprises a pushing rod and a rotating structure, the pushing rod is nested and connected with the fixed plate, the pushing rod is overlapped with the rotating structure through an auxiliary supporting rod, the rotating structure comprises a rotating motor and a rotating tab, the rotating motor is fixedly connected with the rotating tab, and when the rotating motor is started, the rotating tab is rotated to a vertical state, and the auxiliary supporting rod drives the pushing rod to move out along the limiting direction of the fixed plate.

4. A wind turbine blade lightning tip protection device according to claim 3, characterised in that, The fixed plate is provided with a limiting ring, and the limiting ring is used for limiting the out-moving.

5. A wind turbine blade lightning tip protection device according to claim 3, characterised in that, A reserved groove is formed in the surface of the pushing rod, the fixed plate is provided with a blocking plate and a spring, one end of the spring is fixedly connected with the blocking plate, and the other end is fixedly connected with the inner wall of the reserved groove, when the rotating motor is started and the rotating tab is rotated to a horizontal state, the spring drives the pushing rod to move in along the limiting direction of the fixed plate.

6. A wind turbine blade lightning tip protection device according to claim 5, characterised in that, An inclined slope is arranged at the end of the pushing rod away from the auxiliary supporting rod, and a clamping groove is arranged on the surface of the sliding column, when the sliding column is retracted, the sliding column is in sliding contact with the inclined slope, the pushing rod is lifted until the inclined slope slides into the clamping groove, and the sliding column is locked under the driving of the spring.

7. A wind turbine blade lightning tip protection device according to claim 1, characterised in that, The mounting back plate is provided with a polishing collar, and the polishing collar is sleeved with the lightning sharp, and when the sliding column moves in the limiting direction of the mounting slot, the polishing collar polishes the lightning sharp.

8. A wind turbine blade lightning tip protection device according to claim 1, characterised in that, The conductive push rod and the sliding column are connected through a conductive core, which is used to transmit the current of the lightning sharp to the grounding device.

9. A wind power plant, characterized in that The wind power generation device comprises the lightning sharp device for wind power blade tip as claimed in any one of claims 1-8.

Images