CN218493732U - Lightning protection structure of wind turbine generator system blade and wind driven generator blade - Google Patents

Abstract

The utility model provides a lightning protection structure and aerogenerator blade of wind turbine generator system blade, include the blade casing and connect electrical component and position sleeve, the position sleeve is used for the cover to establish the blade casing with connect the outside of electrical component butt joint department, connect the electrical component including arrester and connecting rod, the one end of connecting rod is connected with the one end of arrester, the other end of arrester with the blade casing is close to the one end contact of arrester, its characterized in that, the connecting rod is kept away from the electrically conductive head of one end fixedly connected with of arrester is provided with the cavity in the blade casing, the cavity is close to the hole groove has been seted up to one side of connecting rod. The utility model discloses can be fixed with fixed link rod and movable block, when making conductive head and movable block remove jointly, can not produce relative slip between conductive head and the movable block, guaranteed that conductive head can peg graft completely with electrically conductive socket all the time, avoided contact failure or virtual connecing to can protect fan blade all the time, prevent by the thunder and lightning damage.

Description

Lightning protection structure of wind turbine generator blade and wind driven generator blade

Technical Field

The utility model relates to a aerogenerator technical field specifically is a lightning protection structure and aerogenerator blade of wind turbine generator system blade.

Background

With the rapid development of economy, the demand of people on electric energy is continuously increased, and the capacity of a wind turbine generator and the scale of wind power generation are also continuously enlarged. Because the body structure of the wind turbine generator is high and outstanding, the wind turbine generator is often located in open fields or mountain areas, lightning strike is one of the main factors influencing the safe operation of the wind turbine generator, and the blade is the most easily struck component in the whole generator set by lightning. Therefore, the lightning stroke protection of the wind turbine blade becomes a key problem which restricts the reliable operation of the wind turbine. In order to avoid lightning from damaging the wind power blade, a lightning arrester is usually required to be arranged on the wind power blade.

In the prior art, many researches on a lightning protection structure of a wind turbine blade are carried out, for example, a wind turbine blade tip lightning protection device with application publication number of CN215890330U is inserted into a through hole through an external ejector rod, the ejector rod can extrude a T-shaped rod along with the insertion of the ejector rod, the T-shaped rod extrudes a second spring to shrink, after the T-shaped rod is moved out of the through hole, a swing rod rotates anticlockwise to enable a clamping block to be moved out of a clamping groove, then a positioning sleeve moves rightwards, a lightning arrester moves rightwards, the lightning arrester drives the conductive rod to be sequentially separated from a conductive block and a blade shell, namely, an electric component can be replaced, after the conductive rod on the electric component is inserted into the conductive block, the positioning sleeve is sleeved at the butt joint of the electric component and the blade shell, and then the swing rod and the T-shaped rod are sequentially reset, so that the replacement operation of the electric component can be realized.

However, the following significant disadvantages exist: according to the statement above, after the electrical connecting part receives the thunderbolt, through electrically conductive piece, downlead and earth connection, with thunder and lightning drainage to the ground, and then avoid thunder and lightning damage fan blade, because first spring can lose elasticity forever after being compressed by the conducting rod many times, unable reconversion, after changing electrical connecting part, because of the rigidity of position sleeve, the conducting rod inserts first spring that can't contact in the conducting rod, consequently just can't utilize the contact conduction lightning current of electrically conductive piece and first spring, then can't be with thunder and lightning drainage to the ground, realize lightning protection.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lightning protection structure and aerogenerator blade of wind turbine generator system blade to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a lightning protection structure of a wind turbine generator blade comprises a blade shell, an electric connection part and a positioning sleeve, wherein the positioning sleeve is used for being sleeved at the outer side of a butt joint position of the blade shell and the electric connection part, the electric connection part comprises a lightning arrester and a connecting rod, one end of the connecting rod is connected with one end of the lightning arrester, the other end of the lightning arrester is in contact with one end, close to the lightning arrester, of the blade shell, the lightning protection structure is characterized in that one end, far away from the lightning arrester, of the connecting rod is fixedly connected with a conductive head, a cavity is formed in the blade shell, one side, close to the connecting rod, of the cavity is provided with a hole groove, a limiting block is fixedly mounted on the inner wall of the cavity, and a first sliding groove is formed in the central position of the limiting block;

a movable block is arranged in the cavity and at one end close to the conductive head, a hollow groove for the conductive head to penetrate is formed in the movable block, an upper guide block and a lower guide block are fixedly connected to two sides of the outer wall of the movable block respectively, a threaded groove is formed in the upper guide block, the upper guide block is in threaded connection with a threaded rod through the threaded groove, one end of the threaded rod is fixedly connected with a rotating shaft of a driving motor for driving the threaded rod to rotate, the driving motor is fixedly connected with the inner wall of the cavity, a second sliding groove is formed in the lower guide block, the lower guide block is in sliding connection with a sliding rod through the second sliding groove, one end of the sliding rod is fixedly connected with a support rod, and the support rod is fixedly connected with the inner wall of the cavity;

the inner wall fixed connection of cavity, the cavity is provided with the movable block, the other end of movable block is provided with electrically conductive socket in the cavity and is close to, the other end of electrically conductive socket is connected with the earth connection, the periphery of electrically conductive socket is provided with the parcel layer, the parcel layer with the inner wall fixed connection of cavity.

Preferably, the outer side of the blade shell is provided with a clamping groove, the side wall of the positioning sleeve is provided with a limiting rod which is used for being clamped in the clamping groove, the side wall of the limiting rod is fixedly connected with a connecting lug, a spring is elastically connected between the connecting lug and the outer wall of the positioning sleeve, one end, far away from the clamping groove, of the limiting rod is fixedly connected with a push-pull handle, a stop lever which is used for limiting the position of the limiting rod is further arranged in the clamping groove, the stop lever is fixedly connected with the outer wall of the rotary rod, and the rotary rod is fixedly connected with a rotary handle which drives the rotary rod to rotate.

Preferably, all be connected with electric putter on the outer wall of going up guide block and lower guide block, electric putter runs through fixed connection and is in horizontal pole and connecting rod butt on the movable block outer wall.

Preferably, one ends, far away from the movable block, of the upper guide block and the lower guide block are connected with the roller through a support, and the roller is in rolling connection with the inner wall of the cavity.

Preferably, the limiting block, the movable block and the wrapping layer are insulators.

Preferably, one end of the electric push rod close to the connecting rod is covered with an insulating layer.

In order to achieve the above object, the utility model also provides the following technical scheme:

a wind turbine blade comprising a lightning protection structure for a wind turbine blade as defined in any one of the above.

Compared with the prior art, the beneficial effects of the utility model are that:

the lightning arrester is manually pushed, the conductive head is inserted into the empty slot through the first sliding groove, the conductive head and the movable block are connected into a whole, the upper guide block, the lower guide block and the movable block are driven to slide under the rotation of the driving motor, the conductive head is inserted into the conductive socket, the conductive head, the conductive socket and the ground wire are connected because the conductive socket is connected with the ground wire, the lightning on the lightning arrester can be drained to the ground through the conductive head, when the conductive head is pushed to be inserted into the empty slot, the fixed connecting rod and the movable block can be further fixed through the extension of the electric push rod, when the conductive head and the movable block move together, the conductive head and the movable block cannot slide relatively, the conductive head can be completely inserted into the conductive socket all the time, poor contact or virtual connection is avoided, and therefore fan blades can be protected all the time, and lightning damage is prevented;

through rotatory handle, rotate the pin to with the position of gag lever post contactless, can pull out the gag lever post from the draw-in groove, move the position sleeve through manual right side, can make the arrester move to the right side, through the cooperation between gag lever post and draw-in groove and pin etc. be convenient for with fixed and separation between blade shell and the position sleeve, be convenient for change the arrester simultaneously.

Drawings

FIG. 1 is a perspective view of the overall structure of the present invention;

fig. 2 is a schematic structural view of the communication between the conductive head and the conductive socket of the present invention;

fig. 3 is a schematic structural view illustrating that the conductive head and the conductive socket of the present invention are not connected;

fig. 4 is a schematic structural view of the present invention with the conductive head separated from the movable block;

fig. 5 is an enlarged view of the communication structure between the conductive plug and the conductive socket at a in fig. 2 according to the present invention;

fig. 6 is an enlarged view of the structure of the present invention in which the conductive head and the movable block are separated from each other at B in fig. 4;

fig. 7 is an enlarged view of the structure at C in fig. 5 according to the present invention.

Fig. 8 is an enlarged view of the structure of the clamping groove and the limiting rod at D in fig. 2 according to the present invention.

In the figure: 1 blade casing, 2 electricity connecting parts, 3 position sleeve, 4 arrester, 5 connecting rods, 6 conductive head, 7 cavities, 8 hole grooves, 9 stopper, 10 first spout, 11 movable blocks, 12 dead slots, 13 go up the guide block, 14 guide blocks, 15 gyro wheels, 16 threaded rods, 17 driving motor, 18 second spout, 19 slide bars, 20 bracing pieces, 21 conductive socket, 22 earth connection, 23 parcel layer, 24 draw-in grooves, 25 gag lever post, 26 engaging lug, 27 spring, 28 push-and-pull handle, 29 pin, 30 rotary rod, 31 rotatory handle, 32 electric putter, 33 horizontal pole, 34 supports.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 8, the present invention provides a technical solution:

example 1:

a lightning protection structure of a wind turbine generator blade is shown in figure 1 and comprises a blade shell 1, an electric connection part 2 and a positioning sleeve 3, wherein the positioning sleeve 3 is sleeved on the outer side of the butt joint of the blade shell 1 and the electric connection part 2; as shown in fig. 5 and 6, the power connection part 2 comprises a lightning receptor 4 and a connecting rod 5, one end of the connecting rod 5 is connected with one end of the lightning receptor 4, the other end of the lightning receptor 4 is contacted with one end of the blade shell 1 close to the lightning receptor 4, one end of the connecting rod 5 far away from the lightning receptor 4 is fixedly connected with a conductive head 6, a cavity 7 is arranged in the blade shell 1, one side of the cavity 7 close to the connecting rod 5 is provided with a hole groove 8, the inner wall of the cavity 7 is fixedly provided with a limiting block 9, and the central position of the limiting block 9 is provided with a first sliding groove 10;

as shown in fig. 5 and 6, a movable block 11 is disposed at one end of the cavity 7 close to the conductive head 6, a hollow groove 12 for the conductive head 6 to penetrate is formed in the movable block 11, an upper guide block 13 and a lower guide block 14 are respectively and fixedly connected to two sides of the outer wall of the movable block 11, a threaded groove is formed in the upper guide block 13, the upper guide block 13 is in threaded connection with a threaded rod 16 through the threaded groove, one end of the threaded rod 16 is fixedly connected with a rotating shaft of a driving motor 17 for driving the threaded rod to rotate, the driving motor 17 is fixedly connected with the inner wall of the cavity 7, a second sliding groove 18 is formed in the lower guide block 14, the lower guide block 14 is in sliding connection with a sliding rod 19 through the second sliding groove 18, one end of the sliding rod 19 is fixedly connected with a support rod 20, and the support rod 20 is fixedly connected with the inner wall of the cavity 7;

as shown in fig. 5 and 6, a conductive socket 21 is disposed at the other end of the cavity 7 close to the movable block 11, the other end of the conductive socket 21 is connected to a ground wire 22, a wrapping layer 23 is disposed on the periphery of the conductive socket 21, the wrapping layer 23 is fixedly connected to the inner wall of the cavity 7, and the limiting block 9, the movable block 11 and the wrapping layer 23 are insulators.

As shown in fig. 8, a clamping groove 24 is provided on the outer side of the blade shell 1, a limiting rod 25 for being clamped in the clamping groove 24 is provided on the side wall of the positioning sleeve 3, a connecting lug 26 is fixedly connected to the side wall of the limiting rod 25, a spring 27 is elastically connected between the connecting lug 26 and the outer wall of the positioning sleeve 3, a push-pull handle 28 is fixedly connected to one end of the limiting rod 25 far away from the clamping groove 24, a stop lever 29 for limiting the position of the limiting rod 25 is further provided in the clamping groove 24, the stop lever 29 is fixedly connected to the outer wall of the rotating rod 30, and the rotating rod 30 is fixedly connected to a rotating handle 31 for driving the rotating rod 30 to rotate.

The utility model discloses in, when arrester 4 need be changed because of the harm, through manual rotatory handle 31, rotate pin 29 to with the position that gag lever post 25 is contactless, can pull out gag lever post 25 from draw-in groove 24 in, move position sleeve 3 through manual right side, can make arrester 4 move to the right side, through the cooperation between gag lever post 25 and draw-in groove 24 and pin 29 etc., be convenient for with fixed and separation between blade shell 1 and the position sleeve 3.

The utility model discloses in, promote arrester 4 left through manual, insert conducting head 6 in dead slot 12 through first spout 10, make conducting head 6 and movable block 11 connect as an organic wholely, under driving motor 17's rotation, guide block 13 and lower guide block 14 and movable block 11 slide left on the drive, insert conducting head 6 in the conductive socket 21, because conductive socket 21 and earth connection 22 are connected, then conducting head 6 and conductive socket 21 and earth connection 22 switch-on, can be so through conducting head 6 with lightning conduction to the ground on the arrester 4, and then avoid lightning damage fan blade.

Example 2:

in this embodiment, the following structure is added to embodiment 1: as shown in fig. 7, the outer walls of the upper guide block 13 and the lower guide block 14 are both connected with an electric push rod 32, the electric push rod 32 penetrates through a cross rod 33 fixedly connected to the outer wall of the movable block 11 and abuts against the connecting rod 5, and an insulating layer covers one end, close to the connecting rod 5, of the electric push rod 32.

The utility model discloses in, in conducting head 6 inserts dead slot 12 under manual promotion, extension through electric putter 32 can further be fixed with fixed link 5 and movable block 11, when making conducting head 6 and movable block 11 remove jointly, can not produce relative slip between conducting head 6 and the movable block 11.

Example 3:

in this embodiment, the following structure is added to embodiment 1: as shown in fig. 5 and 6, the ends of the upper guide block 13 and the lower guide block 14 away from the movable block 11 are connected with the rollers 15 through the brackets 34, and the rollers 15 are in rolling connection with the inner wall of the cavity 7.

The utility model discloses in, can make through gyro wheel 15 and go up guide block 13 and lower guide block 14 and remove more in the same direction as smooth, the removal of the connecting rod 5 and conductive head 6 of being more convenient for is convenient for simultaneously connect arrester 4 and conductive socket 21 and earth connection 22 switch-on, better with thunder and lightning drainage to the ground, and then protection fan blade.

A wind turbine blade comprising a lightning protection structure for a wind turbine blade as defined in any one of the above.

The lightning protection structure of the wind turbine generator blade and the working principle of the wind turbine generator blade are as follows:

when the lightning receptor 4 is damaged by lightning, the stop rod 29 is rotated to a position which is not in contact with the limiting rod 25 by manually rotating the rotating handle 31, the limiting rod 25 can be pulled out of the clamping groove 24 by pushing and pulling the handle 28, the positioning sleeve 3 is manually moved to the right, the lightning receptor 4 is conveniently moved to the right, the upper guide block 13 and the lower guide block 14 are moved to the right by rotating the driving motor 17, the movable block 11 and the connecting rod 5 are simultaneously driven to move to the right until the conductive head 6 is separated from the conductive socket 21, the electric push rod 32 is started, the push rod of the electric push rod 32 is moved upwards, the limit of the electric push rod 32 on the connecting rod 5 is released, the lightning receptor 4 is pulled to the right by manually, the connecting rod 5 and the conductive head 6 are moved out of the empty groove 12 until the lightning receptor 4 can be completely separated and taken out, and the lightning receptor 4 can be replaced; after the lightning receptor 4 is replaced, the positioning sleeve 3 is sleeved at the butt joint of the power connection part 2 and the blade shell 1, the lightning receptor 4 is pushed leftwards, the connecting rod 5 and the conductive head 6 are enabled to pass through the first sliding groove 10 and are finally clamped with the empty groove 12, in order to further fix the connecting rod 5 and the movable block 11, the relative sliding between the conductive head 6 and the movable block 11 can be limited by the extension of the electric push rod 32, then the upper guide block 13 and the lower guide block 14 can be driven to move leftwards through the reverse rotation of the driving motor 17, the movable block 11 is driven to drive the conductive head 6 to move leftwards at the same time, until the conductive head 6 is completely inserted into the conductive socket 21, the driving motor 17 is closed, the lightning receptor 4, the conductive head 6, the conductive socket 21 and the grounding wire 22 can be switched on, and the lightning protection work is restarted.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The lightning protection structure of the wind turbine generator blade comprises a blade shell (1), an electric connection part (2) and a positioning sleeve (3), wherein the positioning sleeve (3) is used for being sleeved on the outer side of the butt joint of the blade shell (1) and the electric connection part (2), the electric connection part (2) comprises an electric lightning arrester (4) and a connecting rod (5), one end of the connecting rod (5) is connected with one end of the electric lightning arrester (4), the other end of the electric lightning arrester (4) is in contact with one end, close to the electric lightning arrester (4), of the blade shell (1), and the lightning protection structure is characterized in that one end, far away from the electric lightning arrester (4), of the connecting rod (5) is fixedly connected with an electric conduction head (6), a cavity (7) is arranged in the blade shell (1), a hole groove (8) is formed in one side, close to the connecting rod (5), a limiting block (9) is fixedly arranged on the inner wall of the cavity (7), and a first sliding groove (10) is formed in the central position of the limiting block (9);

a movable block (11) is arranged at one end, close to the conductive head (6), in the cavity (7), a hollow groove (12) for the conductive head (6) to penetrate is formed in the movable block (11), an upper guide block (13) and a lower guide block (14) are fixedly connected to two sides of the outer wall of the movable block (11) respectively, a thread groove is formed in the upper guide block (13), the upper guide block (13) is in threaded connection with a threaded rod (16) through the thread groove, one end of the threaded rod (16) is fixedly connected with a rotating shaft of a driving motor (17) for driving the threaded rod to rotate, the driving motor (17) is fixedly connected with the inner wall of the cavity (7), a second sliding groove (18) is formed in the lower guide block (14), the lower guide block (14) is in sliding connection with a sliding rod (19) through the second sliding groove (18), one end of the sliding rod (19) is fixedly connected with a support rod (20), and the support rod (20) is fixedly connected with the inner wall of the cavity (7);

the utility model discloses a portable electric appliance, including cavity (7), movable block (11) and parcel layer (23), the other end of cavity (7) is interior and be close to the other end of movable block (11) is provided with electrically conductive socket (21), the other end of electrically conductive socket (21) is connected with earth connection (22), the periphery of electrically conductive socket (21) is provided with parcel layer (23), parcel layer (23) with the inner wall fixed connection of cavity (7).

2. The lightning protection structure for the blades of the wind turbine generator set according to claim 1, wherein a clamping groove (24) is formed in the outer side of the blade shell (1), a limiting rod (25) which is clamped in the clamping groove (24) is arranged on the side wall of the locating sleeve (3), a connecting lug (26) is fixedly connected to the side wall of the limiting rod (25), a spring (27) is elastically connected between the connecting lug (26) and the outer wall of the locating sleeve (3), a push-pull handle (28) is fixedly connected to one end, far away from the clamping groove (24), of the limiting rod (25), a blocking rod (29) which is used for limiting the position of the limiting rod (25) is further arranged in the clamping groove (24), the blocking rod (29) is fixedly connected with the outer wall of the rotating rod (30), and the rotating rod (30) is fixedly connected with a rotating handle (31) which drives the rotating rod (30) to rotate.

3. The lightning protection structure of the wind turbine generator blade is characterized in that the outer walls of the upper guide block (13) and the lower guide block (14) are connected with electric push rods (32), and the electric push rods (32) penetrate through a cross rod (33) fixedly connected to the outer wall of the movable block (11) and are abutted to the connecting rod (5).

4. The lightning protection structure for the blades of the wind turbine generator set according to claim 1, wherein one ends, far away from the movable block (11), of the upper guide block (13) and the lower guide block (14) are connected with a roller (15) through a bracket (34), and the roller (15) is in rolling connection with the inner wall of the cavity (7).

5. The lightning protection structure of the wind turbine blade according to claim 1, wherein the limiting block (9), the movable block (11) and the wrapping layer (23) are insulators.

6. The lightning protection structure for the wind turbine blade according to claim 3, characterized in that one end of the electric push rod (32) close to the connecting rod (5) is covered with an insulating layer.

7. Wind turbine blade comprising a lightning protection structure for a wind turbine blade according to any of claims 1 to 6.

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