A lightning protection mechanism for wind turbines to prevent lightning strikes.

Abstract

This invention discloses a lightning protection mechanism for wind turbines, relating to the field of lightning protection technology. It includes a lightning arrester ball and a protective cover. The protective cover is located on the outer wall of the lightning arrester ball. The mechanism also includes a lifting mechanism located at the bottom of the protective cover, comprising a first telescopic rod fixed to the bottom of the outer wall of the protective cover. This lightning protection mechanism for wind turbines, by incorporating a lifting mechanism, allows workers to install the lightning protection mechanism on the wind turbine by driving a lifting screw to move a lifting block upwards. This causes the first telescopic rod to move upwards, moving the lightning arrester ball upwards, thus extending the lightning protection device and facilitating lightning interception. This reduces installation difficulty and the initial size of the lightning protection device, making it easier for workers to carry. The simple installation process also simplifies operation, indirectly improving operational safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lightning protection, in particular to a lightning protection mechanism for wind turbine to prevent lightning. BACKGROUND

[0002] A wind turbine is a device that converts wind energy into electricity. It consists of a wind turbine tower, a propeller rotor, a generator, and a control system. The wind turbine converts wind energy into mechanical energy through rotating blades, and then converts the mechanical energy into electrical energy through a generator.

[0003] Wind turbines are installed in high places, usually several tens of meters or even hundreds of meters high, so they are often in an environment with frequent lightning activity. Lightning strikes can have a serious impact on wind turbines, and may even cause equipment damage, fires, and safety accidents. When lightning strikes a wind turbine, the energy of the lightning can be conducted through the metal structure of the device, cables, etc. to the electrical equipment, generating a large current and voltage, causing the device to be damaged, shortening the service life of the electrical equipment, and directly affecting the performance and life of the wind turbine. Therefore, wind turbines need lightning protection measures to protect the device from lightning. Common lightning protection designs include installing lightning rods, ground grounding systems, lightning protection nets, electrical protection measures, and insulation protection. These measures can attract and decompose lightning, guide it to the ground, and protect the device from damage under lightning attacks, ensuring the normal use and operation of the wind turbine.

[0004] However, in actual use and installation, wind turbines are usually located in high places, such as mountain tops or seashores, so workers need to install lightning protection mechanisms several tens of meters or even hundreds of meters away from the ground, which increases the difficulty and danger of installation. In addition, general lightning protection mechanisms, such as lightning rods, have a large actual size, making it inconvenient for workers to install them at high altitudes. SUMMARY

[0005] The present application aims to provide a lightning protection mechanism for wind turbines to prevent lightning, which solves the problem of the actual use and installation process, where wind turbines are usually located in high places, such as mountain tops or seashores, so workers need to install lightning protection mechanisms several tens of meters or even hundreds of meters away from the ground, which increases the difficulty and danger of installation, and general lightning protection mechanisms, such as lightning rods, have a large actual size, making it inconvenient for workers to install them at high altitudes.

[0006] In order to achieve the above object, the present application provides the following technical scheme: a lightning protection mechanism for wind driven generator to prevent lightning, comprising a lightning protection ball and a protective cover, the outer wall of the lightning protection ball is provided with the protective cover, and the mechanism further comprises a lifting mechanism; the lifting mechanism is arranged at the bottom of the protective cover, the lifting mechanism comprises a first telescopic rod fixed to the outer wall of the bottom of the protective cover, a second telescopic sleeve is arranged outside the first telescopic rod, a third telescopic sleeve is arranged outside the second telescopic sleeve, first gear racks are arranged on the left and right sides of the outer wall of the first telescopic rod, a first gear wheel is arranged on the side of the first gear rack away from the first telescopic rod, a second gear rack is arranged on the side of the first gear wheel away from the first gear rack, a third gear rack is arranged on the outer wall of the first telescopic sleeve, a second gear wheel is arranged on the side of the third gear rack away from the first telescopic sleeve, a limiting gear rack is arranged on the side of the second gear wheel away from the third gear rack, a lifting block is arranged at the bottom of the second telescopic sleeve, and a lifting lead screw is arranged inside the lifting block;

[0007] A limiting mechanism is arranged inside the lifting mechanism and is used in cooperation with the lifting mechanism;

[0008] A transmission mechanism is arranged at the bottom of the lifting lead screw and is used in cooperation with the lifting mechanism;

[0009] A clamping mechanism is arranged on the outer wall of the transmission mechanism and is used in cooperation with the transmission mechanism.

[0010] Further, the first gear wheel is connected in mesh with the first gear rack and the second gear rack respectively, the second gear wheel is connected in mesh with the third gear rack and the limiting gear rack respectively, and the lifting block and the lifting lead screw are connected in sliding.

[0011] Further, the first gear wheel is connected in rotation with the inner wall of the first telescopic sleeve, the second gear wheel is connected in rotation with the second telescopic sleeve, and the limiting gear rack is fixedly connected with the inner wall of the third telescopic sleeve.

[0012] Further, the limiting mechanism comprises first clamping strips arranged on the front and rear outer walls of the first telescopic rod, first limiting blocks are arranged at positions corresponding to the inner wall of the first telescopic sleeve, and second clamping strips are arranged on the outer wall of the first telescopic sleeve.

[0013] Further, second limiting blocks are arranged at positions corresponding to the inner wall of the second telescopic sleeve, third clamping strips are arranged on the outer wall of the second telescopic sleeve, and third limiting blocks are arranged at positions corresponding to the inner wall of the third telescopic sleeve.

[0014] Further, the transmission mechanism comprises a first bevel gear arranged at the bottom of the lifting lead screw, a second bevel gear is arranged on the left side of the outer wall of the first bevel gear, and the first bevel gear and the second bevel gear are connected in mesh.

[0015] Further, the transmission mechanism further comprises a positive and negative screw rod arranged in the second bevel gear, a protective cover is arranged at the left end of the positive and negative screw rod, and a rotating disc is arranged at the right end of the positive and negative screw rod.

[0016] Further, the clamping mechanism comprises limiting rods arranged on the front and back sides of the positive and negative screw rod, the limiting rods are fixedly connected with the inner wall of the protective cover, and sliding blocks are arranged on the outer wall of the limiting rods.

[0017] Further, the clamping mechanism further comprises clamping blocks arranged at the bottom of the sliding blocks, mounting blocks are arranged at one end of the clamping blocks, mounting grooves are arranged on the outer wall of the mounting blocks and correspond to the clamping blocks, and sliding grooves are arranged on the outer wall of the sliding blocks and correspond to the limiting rods.

[0018] Further, the protective cover is provided with a generator box at the bottom, protective grooves are arranged on the left and right sides of the protective cover, and a grounding wire is arranged on the rear side of the outer wall of the protective cover.

[0019] The application provides a lightning protection mechanism for a wind driven generator, which has the following advantages:

[0020] 1. The lifting mechanism is arranged, so that when the staff installs the lightning protection mechanism for the wind driven generator, the lifting screw rod is driven to rotate, the lifting block is driven to move upwards, the first telescopic rod is driven to move upwards, the lightning ball is driven to move upwards, the lightning protection device is in an extended state, lightning is attracted, the installation difficulty is reduced, the initial volume of the lightning protection device is reduced, the staff is convenient to carry, the installation process is simple, the staff is convenient to operate, the installation difficulty is reduced, and the safety of operation is indirectly improved.

[0021] 2. The limiting mechanism is arranged, so that when the staff installs the device, the stability of the lifting mechanism is improved, the device is kept in a stable state when the staff lifts the lightning ball and the first telescopic rod, and the stability and wind resistance of the first telescopic rod, the first telescopic sleeve, the second telescopic sleeve and the third telescopic sleeve are improved after installation, and the safety of the device itself is improved.

[0022] 3. The transmission mechanism is arranged, so that when the staff installs the device, the lifting screw rod is driven to rotate by rotating the rotating disc, the staff is convenient to operate, the clamping mechanism is driven to rotate when the lifting mechanism is driven to rotate, the staff fixes the device itself, and the lightning protection device is unfolded and is in a lightning protection working state.

[0023] 4、The present application is provided with the clamping mechanism, so that the staff can move the sliding block by rotating the rotating disc, so that the device position is fixed, wherein the limiting rod limits the position of the sliding block, and the protection groove makes the device easy to install, so that the staff can determine the installation position, and the staff can operate, and the installation efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a first perspective view of the present application;

[0025] Figure 2 It is a second perspective view of the present application;

[0026] Figure 3 It is a third perspective view of the present application;

[0027] Figure 4 It is a perspective view of the present application;

[0028] Figure 5 It is a perspective view of the present application;

[0029] Figure 6 It is a perspective view of the present application;

[0030] Figure 7 It is an exploded view of the present application;

[0031] Figure 8 It is a first perspective view of the present application;

[0032] Figure 9 It is a second perspective view of the present application;

[0033] Figure 10 It is a perspective view of the present application.

[0034] In the figure: 1, lightning ball; 2, first telescopic rod; 3, first telescopic sleeve; 4, second telescopic sleeve; 5, third telescopic sleeve; 6, first rack; 7, first gear; 8, second rack; 9, third rack; 10, second gear; 11, limiting rack; 12, lifting block; 13, lifting screw; 14, first clamping strip; 15, first limiting block; 16, second clamping strip; 17, second limiting block; 18, third clamping strip; 19, third limiting block; 20, first bevel gear; 21, second bevel gear; 22, positive and negative screw; 23, protective cover; 24, rotating disc; 25, limiting rod; 26, sliding block; 27, clamping block; 28, mounting block; 29, mounting groove; 30, sliding groove; 31, generator box; 32, protection groove; 33, ground wire; 34, protective cover. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part 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 a person of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0036] Please refer to Figure 1 、 Figure 2 、 Figure 8 、 Figure 9 and Figure 10 , a lightning protection mechanism of a wind driven generator to prevent lightning, comprising a lightning ball 1 and a protective cover 34, the outer wall of the lightning ball 1 is provided with the protective cover 34, further comprising a lifting mechanism; the lifting mechanism is arranged at the bottom of the protective cover 34, and the lifting mechanism comprises a first telescopic rod 2 fixed to the bottom of the outer wall of the protective cover 34, a second telescopic sleeve 4 arranged outside the first telescopic rod 2, a third telescopic sleeve 5 arranged outside the second telescopic sleeve 4, a first gear rack 6 arranged on the left and right sides of the outer wall of the first telescopic rod 2, a first gear wheel 7 arranged on the side of the first gear rack 6 away from the first telescopic rod 2, a second gear rack 8 arranged on the side of the first gear wheel 7 away from the first gear rack 6, a third gear rack 9 arranged on the outer wall of the first telescopic sleeve 3, a second gear wheel 10 arranged on the side of the third gear rack 9 away from the first telescopic sleeve 3, a limiting gear rack 11 arranged on the side of the second gear wheel 10 away from the third gear rack 9, a lifting block 12 arranged at the bottom of the second telescopic sleeve 4, and a lifting lead screw 13 arranged inside the lifting block 12;

[0037] A limiting mechanism is arranged inside the lifting mechanism and is used in cooperation with the lifting mechanism;

[0038] A transmission mechanism is arranged at the bottom of the lifting lead screw 13 and is used in cooperation with the lifting mechanism;

[0039] A clamping mechanism is arranged on the outer wall of the transmission mechanism and is used in cooperation with the transmission mechanism.

[0040] The first gear wheel 7 is connected in mesh with the first gear rack 6 and the second gear rack 8 respectively, the second gear wheel 10 is connected in mesh with the third gear rack 9 and the limiting gear rack 11 respectively, and the lifting block 12 and the lifting lead screw 13 are connected in sliding.

[0041] The operation is as follows: when the staff rotates the rotating disc 24, the second bevel gear 21 drives the first bevel gear 20 to rotate, the lifting screw rod 13 rotates with the first bevel gear 20, the lifting block 12 moves upwards, drives the second telescopic sleeve 4 to move upwards, at this time the second gear 10 starts to rotate and is engaged with the limiting rack 11, when the second gear 10 rotates, the third rack 9 is forced to drive the first telescopic sleeve 3 to move upwards, at this time the first gear 7 rotates and is engaged with the second rack 8, the first rack 6 drives the first telescopic rod 2 to move upwards, at this time the lightning protection ball 1 moves upwards, the lifting mechanism is arranged, when the staff installs the lightning protection mechanism of the wind driven generator, the lifting screw rod 13 is driven to rotate, the lifting block 12 moves upwards, at this time the first telescopic rod 2 also moves upwards, drives the lightning protection ball 1 to move upwards, so that the lightning protection device is in an extended state, and the lightning is conveniently connected, in the installation process, the installation difficulty is reduced, the initial volume of the lightning protection device is reduced, the staff is convenient to carry, the installation process is simple, the staff is convenient to operate, the installation difficulty is reduced, and the safety of operation is indirectly improved

[0042] The first gear 7 is rotatably connected with the inner wall of the first telescopic sleeve 3, the second gear 10 is rotatably connected with the second telescopic sleeve 4, and the limiting rack 11 is fixedly connected with the inner wall of the third telescopic sleeve 5.

[0043] Please refer to Figure 1 、 Figure 2 and Figure 8 , the limiting mechanism comprises first clamping strips 14 arranged on the front and rear outer walls of the first telescopic rod 2, first limiting blocks 15 arranged at positions corresponding to the inner wall of the first telescopic sleeve 3, second clamping strips 16 arranged on the outer wall of the first telescopic sleeve 3, second limiting blocks 17 arranged at positions corresponding to the inner wall of the second telescopic sleeve 4, third clamping strips 18 arranged on the outer wall of the second telescopic sleeve 4, and third limiting blocks 19 arranged at positions corresponding to the inner wall of the third telescopic sleeve 5.

[0044] The operation is as follows: the lightning protection ball 1 moves upwards, the first clamping strip 14 slides in the first limiting block 15, the second clamping strip 16 slides in the second limiting block 17, the third clamping strip 18 slides in the third limiting block 19, and the lightning protection device is in a stable state, the limiting mechanism is arranged, so that the staff can enhance the stability of the lifting mechanism when installing the device, so that the staff can keep the device in a stable state when lifting the lightning protection ball 1 and the first telescopic rod 2, and the stability and wind resistance of the first telescopic rod 2, the first telescopic sleeve 3, the second telescopic sleeve 4 and the third telescopic sleeve 5 can be enhanced after installation, and the safety of the device itself is enhanced.

[0045] Please refer to Figure 1 、 Figure 4 、 Figure 5 ,Figure 6 And Figure 7 The transmission mechanism comprises a first bevel gear 20 arranged at the bottom of the lifting screw rod 13, a second bevel gear 21 arranged at the left side of the outer wall of the first bevel gear 20, the first bevel gear 20 and the second bevel gear 21 are in meshing connection, the transmission mechanism further comprises a forward and reverse screw rod 22 arranged in the second bevel gear 21, a protective cover 23 arranged at the left end of the forward and reverse screw rod 22, and a rotating disc 24 arranged at the right end of the forward and reverse screw rod 22.

[0046] Specific operation is as follows, the staff manually rotates the rotating disc 24, at this time the forward and reverse screw rod 22 rotates in the protective cover 23, the second bevel gear 21 drives the first bevel gear 20 to rotate, the lifting screw rod 13 rotates with the first bevel gear 20, and the lifting block 12 moves upward, the transmission mechanism is arranged, so that the staff can drive the lifting screw rod 13 to operate by rotating the rotating disc 24 when installing the device, which is convenient for the staff to operate, and the clamping mechanism can also be driven to operate at the same time when the lifting mechanism operates, so that the staff can also unfold the lightning protection device when fixing the device itself, so that the lightning protection device is in a lightning protection working state.

[0047] Please refer to Figure 1 、 Figure 3 、 Figure 4 、 Figure 6 And Figure 7 The clamping mechanism comprises a limiting rod 25 arranged at the front and rear sides of the forward and reverse screw rod 22, the limiting rod 25 is fixedly connected with the inner wall of the protective cover 23, a sliding block 26 is sleeved on the outer wall of the limiting rod 25, the clamping mechanism further comprises a clamping block 27 arranged at the bottom of the sliding block 26, one end of the clamping block 27 is provided with a mounting block 28, a mounting groove 29 is formed in the corresponding position of the outer wall of the clamping block 27, a sliding groove 30 is formed in the corresponding position of the outer wall of the sliding block 26, a generator box 31 is arranged at the bottom of the protective cover 23, protective grooves 32 are arranged at the left and right sides of the protective cover 23, and a grounding wire 33 is arranged at the rear side of the outer wall of the protective cover 23.

[0048] Specific operation is as follows, first, the protective cover 23 is placed above the generator box 31, then the outer wall of the protective cover 23 is aligned with the protective grooves 32, then the staff manually rotates the rotating disc 24, at this time the forward and reverse screw rod 22 rotates in the protective cover 23, the sliding block 26 slides on the surface of the limiting rod 25, and the clamping block 27 moves with the sliding block 26, when the clamping block 27 is inserted into the mounting groove 29 and is in the clamping state with the mounting block 28, the rotating disc 24 is stopped, the clamping mechanism is arranged, so that the staff can drive the sliding block 26 to move by rotating the rotating disc 24, so that the sliding block 26 coincides with the mounting block 28, so that the position of the device is fixed, the limiting rod 25 limits the sliding block 26, so that the position is stable, the protective grooves 32 make it easy for the staff to determine the installation position when installing the device, which is convenient for the staff to operate and improves the installation efficiency.

[0049] Working principle: when the staff needs to install the lightning protection device on the wind turbine, first place the protective cover 23 above the generator box 31, then align the outer wall of the protective cover 23 with the protective groove 32, then the staff manually rotates the rotating disc 24, at this time the positive and negative lead screw 22 rotates inside the protective cover 23, the sliding block 26 slides on the surface of the limiting rod 25, the clamping block 27 moves with the sliding block 26, when the clamping block 27 is inserted into the installation groove 29 and is in the clamping state with the installation block 28, stop rotating the rotating disc 24, at the same time when the staff rotates the rotating disc 24, the second bevel gear 21 drives the first bevel gear 20 to rotate, the lifting lead screw 13 rotates with the first bevel gear 20, the lifting block 12 moves upwards, driving the second telescopic sleeve 4 to move upwards, at this time the second gear 10 starts to rotate and meshes with the limiting rack 11, when the second gear 10 rotates, the third rack 9 is forced to drive the first telescopic sleeve 3 to move upwards, at this time the first gear 7 rotates and meshes with the second rack 8, the first rack 6 drives the first telescopic rod 2 to move upwards, at this time the lightning protection ball 1 moves upwards, at the same time the first clamping strip 14 slides inside the first limiting block 15, the second clamping strip 16 slides inside the second limiting block 17, the third clamping strip 18 slides inside the third limiting block 19, and the lightning protection device as a whole is in a stable state and in an elongated working state.

[0050] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0051] The above is only the preferred embodiment of the present application, it should be noted that for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and refinements can be made, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A lightning protection mechanism for wind power generator against lightning, comprising a lightning ball (1) and a protective cover (34), the outer wall of the lightning ball (1) is provided with the protective cover (34), characterized in that, It further includes a lifting mechanism; the lifting mechanism is arranged at the bottom of the protective cover (34), the lifting mechanism includes a first telescopic rod (2) fixed to the bottom of the outer wall of the protective cover (34), the outer part of the first telescopic rod (2) is provided with a second telescopic sleeve (4), the outer part of the second telescopic sleeve (4) is provided with a third telescopic sleeve (5), the left and right sides of the outer wall of the first telescopic rod (2) are provided with a first rack (6), the side away from the first telescopic rod (2) of the first rack (6) is provided with a first gear (7), the side away from the first rack (6) of the first gear (7) is provided with a second rack (8), the outer wall of the first telescopic sleeve (3) is provided with a third rack (9), the side away from the first telescopic sleeve (3) of the third rack (9) is provided with a second gear (10), the side away from the third rack (9) of the second gear (10) is provided with a limiting rack (11), the bottom of the second telescopic sleeve (4) is provided with a lifting block (12), the inside of the lifting block (12) is provided with a lifting lead screw (13); The limiting mechanism is arranged inside the lifting mechanism and is used in cooperation with the lifting mechanism; The transmission mechanism is arranged at the bottom of the lifting lead screw (13) and is used in cooperation with the lifting mechanism; The clamping mechanism is arranged on the outer wall of the transmission mechanism and is used in cooperation with the transmission mechanism; The first gear (7) is rotatably connected with the inner wall of the first telescopic sleeve (3), the second gear (10) is rotatably connected with the second telescopic sleeve (4), and the limiting rack (11) is fixedly connected with the inner wall of the third telescopic sleeve (5); The limiting mechanism includes a first clamping strip (14) arranged on the front and rear outer walls of the first telescopic rod (2), the first clamping strip (14) is provided with a first limiting block (15) at the corresponding position of the inner wall of the first telescopic sleeve (3), and the outer wall of the first telescopic sleeve (3) is provided with a second clamping strip (16); The second clamping strip (16) is provided with a second limiting block (17) at the corresponding position of the inner wall of the second telescopic sleeve (4), the outer wall of the second telescopic sleeve (4) is provided with a third clamping strip (18), and the third clamping strip (18) is provided with a third limiting block (19) at the corresponding position of the inner wall of the third telescopic sleeve (5).

2. A lightning protection system for a wind turbine according to claim 1, c h a r a c t e r i z e d in that The first gear (7) is meshingly connected with the first rack (6) and the second rack (8) respectively, the second gear (10) is meshingly connected with the third rack (9) and the limiting rack (11) respectively, and the lifting block (12) and the lifting lead screw (13) are slidingly connected.

3. A lightning protection system for a wind turbine according to claim 1, c h a r a c t e r i z e d in that The transmission mechanism includes a first bevel gear (20) arranged at the bottom of the lifting lead screw (13), the left side of the outer wall of the first bevel gear (20) is provided with a second bevel gear (21), and the first bevel gear (20) and the second bevel gear (21) are meshingly connected.

4. A lightning protection system for a wind turbine according to claim 3, c h a r a c t e r i z e d in that The transmission mechanism further includes a forward and reverse lead screw (22) arranged inside the second bevel gear (21), the left end of the forward and reverse lead screw (22) is provided with a protective cover (23), and the right end of the forward and reverse lead screw (22) is provided with a rotating disc (24).

5. A lightning protection system for a wind turbine generator according to claim 4, wherein The clamping mechanism comprises limiting rods (25) arranged on the front and back of the positive and negative screw rods (22), the limiting rods (25) are fixedly connected with the inner wall of the protective cover (23), and the outer wall of the limiting rods (25) is sleeved with sliding blocks (26).

6. A lightning protection system for a wind turbine according to claim 5, wherein, The clamping mechanism further comprises clamping blocks (27) arranged at the bottom of the sliding blocks (26), one end of the clamping blocks (27) is provided with mounting blocks (28), mounting grooves (29) are formed in the corresponding positions of the outer wall of the mounting blocks (28) and the clamping blocks (27), and sliding grooves (30) are formed in the corresponding positions of the outer wall of the sliding blocks (26) and the limiting rods (25).

7. A lightning protection system for a wind turbine generator according to claim 4, wherein The bottom of the protective cover (23) is provided with a generator box (31), the left and right sides of the protective cover (23) are provided with protective grooves (32), and the outer wall of the protective cover (23) is provided with grounding wires (33) at the back.

Images