Wind power blade tip lightning arrester

Abstract

The utility model relates to the technical field of wind power blades, in particular to a wind power blade tip lightning arrester which comprises a lightning arresting part, a connecting block, an arc-shaped groove, an arc-shaped block, an inserting mechanism and an unlocking mechanism, a connecting part is arranged on one side of the lightning arresting part, and the connecting block is fixedly installed on the side, close to the connecting part, of the lightning arresting part. The inserting mechanism comprises a positioning assembly, a limiting block and two locking rods, the unlocking mechanism comprises a driving assembly, a moving assembly and two abutting blocks, the arc-shaped block is directly inserted into the arc-shaped groove, at the moment, the two locking rods can be clamped to the two sides of the limiting block respectively, and therefore the arc-shaped block can be fixed into the arc-shaped groove; the connection between the lightning receiving part and the connecting part is completed, the locking rod can be far away from the limiting block by moving the sliding rod, the clamping connection between the limiting block and the locking rod can be relieved, and the unlocking between the arc-shaped groove and the arc-shaped block is completed, so that the rapid mounting and dismounting of the lightning receiving part can be realized, and the use is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind power blade technical field, concretely is a wind power blade tip lightning arrester. BACKGROUND

[0002] The wind power blade lightning arrester is a device specially designed for the wind turbine blade, and its main function is to protect the blade from direct lightning strike, thereby reducing the damage caused by lightning to the wind turbine, and the wind power blade lightning arrester usually comprises a connecting part and a lightning arrester part.

[0003] The utility model discloses a kind of wind power blade tip lightning arresters, including the lightning arrester component of being set at wind power blade shell tip end outside, the internal base component of being set at wind power blade shell inside and being detachably connected with lightning arrester component, the end of internal base component away from lightning arrester component is set for the connection of down conductor in wind power blade shell inside Wire pipe;Wire pipe, internal base component outside is wrapped with insulating material;

[0004] Although the above-mentioned lightning arrester can realize detachable connection with the internal base component, the dismounting and mounting mode thereof is realized by bolts, which are generally installed on the surface and are easily rusted after being eroded by rain for a long time. On the one hand, it may cause damage to the bolts, resulting in loosening and poor fastening effect. On the other hand, when the bolts are severely rusted, it may be difficult to dismount. To solve this problem, the present application provides a wind power blade tip lightning arrester. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a wind power blade tip lightning arrester to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A wind power blade tip lightning arrester comprises a lightning arrester part, a connecting part on one side of the lightning arrester part, a connecting block, an arc-shaped groove, an arc-shaped block, a plug-in mechanism and an unlocking mechanism.

[0008] The connecting block is fixedly installed on one side of the lightning arrester part close to the connecting part, the arc-shaped groove is opened on one side of the connecting part close to the connecting block, the arc-shaped block is fixed on the surface of the connecting block, and the arc-shaped block is plugged into the inside of the arc-shaped groove.

[0009] The plug-in mechanism comprises a positioning assembly, a limiting block and two lock rods, a cavity is opened on one end of the arc-shaped block close to the arc-shaped groove, the limiting block is fixedly installed on the inner wall of the arc-shaped groove, one end of the limiting block extends into the inside of the cavity, the two lock rods are respectively clamped on both sides of the limiting block, and the positioning assembly is located on one side of the two lock rods away from each other.

[0010] The unlocking mechanism comprises a driving assembly, a moving assembly and two abutting blocks, the two abutting blocks are located at the side where the two locking rods are close to each other, the moving assembly is located between the cavity and the two abutting blocks, and the driving assembly is located at the end of the moving assembly away from the abutting blocks.

[0011] As a further scheme of the utility model, the positioning assembly comprises two first springs and two accommodating grooves, the two accommodating grooves are symmetrically arranged on the inner walls of the cavity, each first spring is arranged in the accommodating groove, one end of each first spring is connected with the accommodating groove, and the other end of each first spring is connected with one locking rod.

[0012] The two rotating rods are symmetrically arranged in the cavity, one end of each locking rod is rotatably arranged on one rotating rod, and the other end of each locking rod is clamped with the limiting block.

[0013] As a further scheme of the utility model, the moving assembly comprises a central shaft, a second spring and two swing rods, the central shaft is fixedly arranged in the cavity, the two swing rods are rotatably arranged on the surface of the central shaft, each abutting block is fixedly arranged on one side of one swing rod close to the locking rod, the second spring is arranged between one end of the two swing rods, and the two ends of the second spring are connected with the two swing rods.

[0014] As a further scheme of the utility model, the driving assembly comprises an abutting rod, two third springs, two sliding grooves and two sliding rods, the two sliding grooves are arranged on the two sides of the connecting block, each sliding rod is slidably arranged in one sliding groove, the abutting rod is arranged between one end of the two swing rods away from the second spring, the two ends of the abutting rod are connected with the two sliding rods through the sealing element, the two third springs are fixedly arranged on one side of the abutting rod away from the central shaft, and the other end of each third spring is connected with the inner wall of the cavity.

[0015] As a further scheme of the utility model, the sealing element comprises two sealing plates, each sealing plate is arranged on one side of one sliding groove and matched with the inner wall of the cavity, and each sealing plate is fixedly arranged between the abutting rod and one sliding rod.

[0016] As a further scheme of the utility model, a plurality of butt plates are symmetrically arranged on the two sides of the arc-shaped block, each butt plate is fixedly connected with the connecting block, and a plurality of butt grooves matched with the butt plates are arranged on one side of the connecting part close to the connecting block.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1. The utility model discloses a wind power blade tip lightning arrester, through the setting plug-in mechanism, arc block is directly inserted into the inside of arc groove, at this moment two lock rods can be respectively connected in the both sides of limiting block to can fix arc block in the inside of arc groove, complete the connection between lightning part and connecting portion, utilize unlocking mechanism simultaneously, through the removal of slide rod, can make lock rod away from limiting block, can remove the connection between limiting block and lock rod, complete the unlocking between arc groove and arc block to can realize the quick installation and disassembly of lightning part, convenient to use.

[0019] 2. The utility model discloses a wind power blade tip lightning arrester, through the setting sealing plate, when slide rod removes, sealing plate can always block up the sliding groove, improve the sealing effect of sliding groove, can reduce the possibility of rainwater into the cavity, improve the installation firmness of lightning part, make lightning part and connecting portion not easy loose between to can improve the conduction efficiency of lightning current.

[0020] 3. The utility model discloses a wind power blade tip lightning arrester, through the setting of multiple mutually plug-in butt joint plate and butt joint groove, not only can improve the connection effect between lightning part and connecting portion, simultaneously still can increase the contact area between lightning part and connecting portion to ensure the smoothness of electric conduction. DRAWINGS

[0021] Figure 1 It is the structure schematic drawing of the utility model.

[0022] Figure 2 It is the split structure schematic of lightning part and connecting portion in the utility model Figure 1 .

[0023] Figure 3 It is the split structure schematic of lightning part and connecting portion in the utility model Figure 2 .

[0024] Figure 4 It is the sectional structure schematic drawing of the utility model.

[0025] Figure 5 It is the enlarged structure schematic drawing of A part in the utility model Figure 4 .

[0026] Figure 6 It is the internal structure schematic drawing of cavity in the utility model.

[0027] Figure 7 It is the enlarged structure schematic drawing of B part in the utility model Figure 6 .

[0028] Figure 8 It is the structure schematic drawing of lock rod in the utility model.

[0029] Figure 9 This is a schematic diagram of the swing arm in this utility model.

[0030] Among them: 11, lightning receiving part; 12, connecting part; 13, connecting block; 14, arc groove; 15, arc block; 16, cavity; 17, limiting block; 18, locking rod; 19, rotating rod; 20, first spring; 21, central shaft; 22, swing rod; 23, abutting block; 24, second spring; 25, abutting rod; 26, third spring; 27, sliding groove; 28, sliding rod; 29, sealing plate; 30, docking plate; 31, docking groove; 32, receiving groove. Detailed Implementation

[0031] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0032] The present invention provides the following preferred embodiments:

[0033] Example 1, as Figures 1-9 As shown, a wind turbine blade tip lightning arrester includes a lightning arresting part 11, and a connecting part 12 on one side of the lightning arresting part 11. Specifically, one end of the connecting part 12 is connected to the tip of the wind turbine blade and is connected by a cable. The main function of the lightning arresting part 11 is to protect the blade from direct lightning strikes, thereby reducing the damage caused by lightning to the wind turbine. It also includes a connecting block 13, an arc groove 14, an arc block 15, a plug-in mechanism, and an unlocking mechanism. The lightning arresting part 11, the connecting part 12, and the connecting block 13 are all made of conductive materials. The contact surface between the connecting block 13 and the connecting part 12 forms a conductive surface, thereby ensuring smooth electrical conduction.

[0034] The connecting block 13 is fixedly installed on the side of the lightning receiving part 11 near the connecting part 12. The arc-shaped groove 14 is opened on the side of the connecting part 12 near the connecting block 13. The arc-shaped block 15 is fixed to the surface of the connecting block 13 and inserted into the interior of the arc-shaped groove 14.

[0035] The insertion mechanism includes a positioning component, a limiting block 17 and two locking rods 18. The arc-shaped block 15 has a cavity 16 at one end near the arc-shaped groove 14. The limiting block 17 is fixedly installed on the inner wall of the arc-shaped groove 14, and one end of the limiting block 17 extends into the cavity 16. The two locking rods 18 are respectively engaged on both sides of the limiting block 17. The positioning component is located on the side of the two locking rods 18 that are far apart from each other.

[0036] The unlocking mechanism includes a drive component, a moving component, and two abutment blocks 23. The two abutment blocks 23 are located on the sides of the two locking rods 18 that are close to each other. The moving component is located between the cavity 16 and the two abutment blocks 23. The drive component is located at the end of the moving component that is away from the abutment blocks 23.

[0037] The arc-shaped block 15 is directly inserted into the interior of the arc-shaped slot 14, at this time, the two locking rods 18 can be clamped on the two sides of the limiting block 17 respectively, so that the arc-shaped block 15 can be fixed in the interior of the arc-shaped slot 14, the connection between the lightning connecting part 11 and the connecting part 12 is completed, and meanwhile, by moving the sliding rod 28, the locking rod 18 can be moved away from the limiting block 17, that is, the clamping between the limiting block 17 and the locking rod 18 is released, the unlocking between the arc-shaped slot 14 and the arc-shaped block 15 is completed, and therefore, the lightning connecting part 11 can be quickly installed and disassembled, which is convenient to use.

[0038] As shown in Figures 1-9 The positioning assembly comprises two first springs 20 and two accommodating grooves 32, the two accommodating grooves 32 are symmetrically arranged on the inner walls of the cavity 16, each first spring 20 is arranged in one accommodating groove 32, one end of each first spring 20 is connected with the accommodating groove 32, and the other end of each first spring 20 is connected with one locking rod 18.

[0039] In the initial state, the locking rod 18 is clamped on one side of the limiting block 17, and the first spring 20 is in a natural state.

[0040] The two rotating rods 19 are symmetrically arranged in the interior of the cavity 16, one end of each locking rod 18 is rotationally arranged on one rotating rod 19, and the other end of each locking rod 18 is clamped with the limiting block 17.

[0041] It should be noted that the two sides of one end of the limiting block 17 close to the connecting block 13 are provided with inclined surfaces, and one end of the locking rod 18 away from the rotating rod 19 is also provided with an inclined surface. When the arc-shaped block 15 is inserted into the interior of the arc-shaped slot 14, the limiting block 17 slowly moves into the interior of the cavity 16, the limiting block 17 first contacts the two locking rods 18, with the continuous movement of the arc-shaped block 15, the limiting block 17 and the locking rod 18 abut against each other, so that the locking rod 18 can rotate along the axis of the rotating rod 19, and the first spring 20 is compressed. When the arc-shaped block 15 is completely inserted into the interior of the arc-shaped slot 14, the locking rod 18 is separated from the inclined surface of the limiting block 17, and under the action of the first spring 20, the locking rod 18 is reset, the locking rod 18 can be clamped on one side of the limiting block 17, the arc-shaped block 15 is positioned in the interior of the arc-shaped slot 14, and therefore, the installation of the lightning connecting part 11 is completed.

[0042] As shown in Figures 1-9 The moving assembly comprises a central shaft 21, a second spring 24 and two swing rods 22, the central shaft 21 is fixedly arranged in the interior of the cavity 16, the two swing rods 22 are rotationally arranged on the surface of the central shaft 21, each abutting block 23 is fixedly arranged on one side of one swing rod 22 close to the locking rod 18, the second spring 24 is located between one end of the two swing rods 22, and the two ends of the second spring 24 are connected with the two swing rods 22 respectively.

[0043] In the initial state, the abutting block 23 is not in contact with the locking rod 18, and the second spring 24 is in a natural state.

[0044] As shown in Figures 1-9 The driving assembly comprises an abutting rod 25, two third springs 26, two sliding grooves 27, and two sliding rods 28. The two sliding grooves 27 are respectively arranged on the two sides of the connecting block 13. Each sliding rod 28 is slidingly arranged in one sliding groove 27. The abutting rod 25 is located between the two ends of the two swing rods 22 away from the second spring 24. The two ends of the abutting rod 25 are respectively connected with the two sliding rods 28 through sealing members. The two third springs 26 are fixed on the side of the abutting rod 25 away from the central shaft 21. The other end of each third spring 26 is connected with the inner wall of the cavity 16.

[0045] In the initial state, the abutting rod 25 is in contact with the two swing rods 22, and the third spring 26 is in a natural state.

[0046] When it is needed to release the connection between the arc-shaped groove 14 and the arc-shaped block 15, the sliding rod 28 is pulled to move in the sliding groove 27 away from the lightning receiving part 11. The sliding rod 28 drives the abutting rod 25 to move through the sealing member. At this time, the third spring 26 is elongated. When the abutting rod 25 moves, it can abut against the two swing rods 22, so that the two swing rods 22 can be reversely rotated, that is, each swing rod 22 can drive the abutting block 23 to move towards the locking rod 18. The second spring 24 is elongated. When the abutting block 23 rotates, it can drive the locking rod 18 to rotate around the axis of the rotating rod 19, so that the locking rod 18 can be separated from the limiting block 17, thereby releasing the positioning of the arc-shaped block 15. Then the arc-shaped block 15 is taken out from the inside of the arc-shaped groove 14, so that the lightning receiving part 11 can be disassembled.

[0047] As shown in Figures 1-9 The sealing member comprises two sealing plates 29. Each sealing plate 29 is located on one side of one sliding groove 27 and cooperates with the inner wall of the cavity 16. Each sealing plate 29 is fixed between the abutting rod 25 and one sliding rod 28.

[0048] Specifically, one end of the limiting block 17 is provided with a sealing ring which is fixedly arranged on the inner wall of the cavity 16. The end of the sealing plate 29 away from the abutting rod 25 is tightly attached to the sealing ring.

[0049] It should be noted that the length of the sealing plate 29 is greater than the length of the sliding groove 27. When the sliding rod 28 moves in the sliding groove 27, the sliding rod 28 can drive the sealing plate 29 to move. At this time, the sealing plate 29 can always seal the sliding groove 27, improve the sealing effect of the sliding groove 27, reduce the possibility of rainwater entering the inside of the cavity 16, improve the installation firmness of the lightning receiving part 11, and prevent the lightning receiving part 11 and the connecting part 12 from being loose, thereby improving the conduction efficiency of the lightning current.

[0050] As Figures 1-9 shown, the arc-shaped block 15 is symmetrically provided with a plurality of butt plates 30, each of which is fixedly connected with the connecting block 13, and the connecting portion 12 is provided with a plurality of butt grooves 31 matched with the butt plates 30 on the side close to the connecting block 13, by setting the plurality of butt plates 30 and the butt grooves 31 inserted with each other, not only the connecting effect between the lightning receiving portion 11 and the connecting portion 12 can be improved, but also the contact area between the lightning receiving portion 11 and the connecting portion 12 can be increased, so that the smoothness of the electric conduction is ensured.

[0051] The beneficial effects of the utility model are embodied in the above-mentioned preferred embodiments of the utility model, and are not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A wind turbine blade tip lightning receptor comprising a lightning receptor portion (11), one side of which is provided with a connection portion (12), characterized in that It also includes connecting block (13), arc-shaped slot (14), arc-shaped block (15), plug-in mechanism and unlocking mechanism; The connecting block (13) is fixedly installed on the lightning attracting part (11) near the connecting part (12), the arc-shaped slot (14) is arranged on the connecting part (12) near the connecting block (13), and the arc-shaped block (15) is fixed to the surface of the connecting block (13). The arc-shaped block (15) is inserted into the inside of the arc-shaped slot (14). The plug-in mechanism comprises a positioning assembly, a limiting block (17) and two lock rods (18). The arc-shaped block (15) is provided with a cavity (16) at one end near the arc-shaped slot (14). The limiting block (17) is fixedly installed on the inner wall of the arc-shaped slot (14). One end of the limiting block (17) extends into the inside of the cavity (16). The two lock rods (18) are respectively clamped on the two sides of the limiting block (17). The positioning assembly is located on the side away from each other of the two lock rods (18). The unlocking mechanism comprises a driving assembly, a moving assembly and two abutting blocks (23). The two abutting blocks (23) are respectively located on the side close to each other of the two lock rods (18). The moving assembly is located between the cavity (16) and the two abutting blocks (23). The driving assembly is located at one end of the moving assembly away from the abutting block (23).

2. A wind turbine blade tip lightning receptor according to claim 1, characterised in that, The positioning assembly comprises two first springs (20) and two containing grooves (32). The two containing grooves (32) are symmetrically arranged on the inner wall of the cavity (16). Each first spring (20) is installed in one containing groove (32). One end of each first spring (20) is connected with the containing groove (32). The other end of each first spring (20) is connected with one lock rod (18). Two rotating rods (19) are symmetrically fixed in the inside of the cavity (16). One end of each lock rod (18) is rotatably arranged on one rotating rod (19). The other end of each lock rod (18) is clamped with the limiting block (17).

3. A wind turbine blade tip lightning receptor according to claim 2, characterised in that, The moving assembly comprises a central shaft (21), a second spring (24) and two swing rods (22). The central shaft (21) is fixedly installed in the inside of the cavity (16). The two swing rods (22) are rotatably arranged on the surface of the central shaft (21). Each abutting block (23) is fixed on one swing rod (22) near the lock rod (18). The second spring (24) is located between one end of the two swing rods (22). The two ends of the second spring (24) are respectively connected with the two swing rods (22).

4. A wind turbine blade tip lightning receptor according to claim 3, characterised in that, The driving assembly comprises an abutting rod (25), two third springs (26), two sliding grooves (27) and two sliding rods (28). The two sliding grooves (27) are respectively arranged on the two sides of the connecting block (13). Each sliding rod (28) is slidably arranged in one sliding groove (27). The abutting rod (25) is located between one end of the two swing rods (22) away from the second spring (24). The two ends of the abutting rod (25) are respectively connected with the two sliding rods (28) through sealing members. The two third springs (26) are fixed on one side of the abutting rod (25) away from the central shaft (21). The other end of each third spring (26) is connected with the inner wall of the cavity (16).

5. A wind turbine blade tip lightning receptor according to claim 4, characterised in that, The sealing member comprises two sealing plates (29), each of which is located at one side of a sliding groove (27) and cooperates with the inner wall box of the cavity (16), and each of the sealing plates (29) is fixed between the abutting rod (25) and a sliding rod (28).

6. A wind turbine blade tip lightning receptor according to claim 5, characterised in that, A plurality of butt plates (30) are symmetrically arranged on two sides of the arc-shaped block (15), each of the butt plates (30) is fixedly connected with the connecting block (13), and a plurality of butt grooves (31) matched with the butt plates (30) are arranged on one side of the connecting portion (12) close to the connecting block (13).

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