CN213305200U - Lightning protection grounding device of wind generating set of wind power plant - Google Patents

Abstract

The utility model discloses a wind-powered electricity generation field wind generating set's lightning grounding device, including setting up internal grounding ring and the external grounding ring in the generating set outside, internal grounding ring is located the inboard of external grounding ring, internal grounding ring and external grounding ring all are connected with generating set through the connecting piece, the last cover of external grounding ring is established by a plurality of lantern rings, be fixed with on the diapire of the lantern ring and rotate the seat, and rotate through rotating the seat and install the upper portion bull stick, the downside of upper portion bull stick is fixed with the threaded rod, the earthing pole is installed to the outside screw thread of threaded rod, set up in the earthing pole with threaded rod assorted screw hole. The earthing device of this scheme can be convenient and stable insert through the setting of each structure and establish lowly, increases the degree of difficulty of extracting, has avoided the possibility of unexpected extraction, has also increased the ground plane of earthing pole simultaneously, has improved the ground effect, and the position of earthing pole can be according to the topography and geomorphology characteristic in actual place, adjusts earthing position, the operation of being convenient for.

Description

Lightning protection grounding device of wind generating set of wind power plant

Technical Field

The utility model relates to an electric power ground connection technical field especially relates to a wind-powered electricity generation field wind generating set's lightning grounding device.

Background

The lightning protection of the wind generating set mainly considers two aspects, namely the engine room and the blade. The lightning protection of the engine room is usually implemented by arranging a lightning rod at the rear end of the shell of the engine room, and grounding the lightning rod through the steel shell and the tower. Lightning protection of the blade is mainly characterized in that lightning receptors are arranged on two sides of a blade tip and connected with a conduction system, lightning current is led to the blade in a controlled mode and enters the ground through a hub and a tower barrel, and therefore protection of the blade is achieved. The generator of the nacelle machine must be connected to the grounding device of the wind turbine using a dedicated grounding cable, while the other components in the nacelle are directly connected to the nacelle base. According to the use requirement, the grounding resistance of the grounding grid of the wind generating set is not more than 4 ohms.

Through search, chinese patent No. CN201829944U discloses a lightning protection grounding device for wind turbine generator systems in wind power plants, which includes a conductive grounding ring and a vertical grounding electrode, and is characterized in that an inner and an outer two-turn horizontal grounding ring are provided, the inner and the outer two-turn horizontal grounding ring are connected at multiple positions, and the vertical grounding electrode is provided on the inner and the outer two-turn horizontal grounding ring to form a ring-shaped horizontal grounding grid.

The grounding device in the prior art has the following disadvantages: after the grounding electrode is buried underground in the device, the stability is low, meanwhile, the grounding position of the grounding electrode is fixed, and the grounding position is not convenient to adjust according to the topographic features of an actual site, so that the lightning protection grounding device of the wind power plant wind generating set is proposed again.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a wind power plant wind generating set's lightning grounding device.

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

the utility model provides a wind-powered electricity generation field wind generating set's lightning protection earthing device, includes internal ground ring and the external ground ring that sets up in the generating set outside, internal ground ring is located the inboard of external ground ring, internal ground ring and external ground ring all are connected with the generating set through the connecting piece, external ground ring's last cover is established by a plurality of lantern rings, be fixed with the rotation seat on the diapire of lantern ring, and rotate through the rotation seat and install the upper portion bull stick, the downside of upper portion bull stick is fixed with the threaded rod, the earthing pole is installed to the outside screw thread of threaded rod, set up in the earthing pole with threaded rod assorted screw hole, be fixed with the lower part bull stick on the diapire of threaded rod, and the lower part bull stick is located the threaded hole of earthing pole, it is equipped with a plurality of ring bodies to rotate the cover on the lateral wall of lower part bull stick, articulated connecting rod on the lateral wall of, and a vertical groove corresponding to the supporting foot is formed between the outer surface of the grounding electrode and the internal threaded hole in a penetrating manner, and the supporting foot is rotatably installed in the vertical groove through the rotating shaft.

Furthermore, a top plate is fixed at the top end of the grounding electrode, and a plurality of insertion rods are fixed on the bottom wall of the top plate.

Furthermore, the ring body is rotatably sleeved on the side wall of the lower rotating rod through two limiting rings.

Further, each ring body is hinged with two connecting rods, and each connecting rod is hinged with one supporting foot.

Further, the top of spike inclines to the axle center of earthing pole, and the top extends to the threaded hole of earthing pole inside, the pivot is installed and is close to top position department at the spike.

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

the earthing device of this scheme can be convenient and stable insert through the setting of each structure and establish lowly, increases the degree of difficulty of extracting, has avoided the possibility of unexpected extraction, has also increased the ground plane of earthing pole simultaneously, has improved the ground effect, and the position of earthing pole can be according to the topography and geomorphology characteristic in actual place, adjusts earthing position, the operation of being convenient for.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a schematic view of an overall structure of a lightning protection grounding device of a wind turbine generator set of a wind farm according to the present invention;

fig. 2 is a top view of the lightning protection grounding device of the wind turbine generator system of the wind farm provided by the present invention;

FIG. 3 is an enlarged view of a portion a of FIG. 1;

FIG. 4 is an enlarged view of a portion b of FIG. 1;

fig. 5 is an enlarged view of a portion c of fig. 1.

In the figure: the generator set comprises a generator set 1, a grounding ring 2, an external grounding ring 3, a connecting piece 4, a lantern ring 5, a rotating seat 6, an upper rotating rod 7, a top plate 8, an inserted rod 9, a threaded rod 10, a lower rotating rod 11, a grounding electrode 12, a vertical groove 13, a rotating shaft 14, a supporting leg 15, a ring body 16 and a connecting rod 17.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-5, a lightning protection grounding device of a wind power plant wind generating set comprises an inner grounding ring 2 and an outer grounding ring 3 which are arranged on the outer side of a generating set 1, the inner grounding ring 2 is arranged on the inner side of the outer grounding ring 3, the inner grounding ring 2 and the outer grounding ring 3 are both connected with the generating set 1 through a connecting piece 4, a plurality of lantern rings 5 are sleeved on the outer grounding ring 3, the lantern rings 5 are in sliding contact with the outer grounding ring 3, a rotating seat 6 is fixed on the bottom wall of the lantern rings 5, an upper rotating rod 7 is rotatably installed through the rotating seat 6, a rotating hand wheel (not marked in the figure) is installed on the upper portion of the upper rotating rod 7, a threaded rod 10 is fixed on the lower side of the upper rotating rod 7, a grounding electrode 12 is installed on the outer side of the threaded rod 10 in a threaded manner, a threaded hole matched with the threaded rod 10 is formed in the grounding electrode 12, a lower rotating rod 11 is fixed, the side wall of lower part bull stick 11 is gone up to rotate the cover and is equipped with a plurality of rings 16, and articulated on the side wall of rings 16 have a connecting rod 17, and the one end that rings 16 was kept away from to connecting rod 17 articulates there is a spike 15, runs through between the surface of earthing pole 12 and the inside screw hole and sets up the vertical groove 13 that corresponds with spike 15, and spike 15 rotates through pivot 14 and installs in vertical groove 13. The diameters of the upper rotating rod 7 and the lower rotating rod 11 are smaller than the diameter of the threaded rod 10, and the upper rotating rod 7 and the lower rotating rod 11 are not in contact with threaded holes in the grounding electrode 12.

The top end of the grounding electrode 12 is fixed with a top plate 8, and the bottom wall of the top plate 8 is fixed with a plurality of inserted rods 9. The ring body 16 is rotatably sleeved on the side wall of the lower rotating rod 11 through two limiting rings. Each ring 16 is hinged to two links 17, and each link 17 is hinged to one of the feet 15.

The top of the supporting leg 15 inclines towards the axis of the grounding electrode 12, the top end extends into the threaded hole inside the grounding electrode 12, and the rotating shaft 14 is installed at the position of the supporting leg 15 close to the top end.

The utility model discloses a theory of operation and use flow: the inner grounding ring 2 and the outer grounding ring 3 are connected with the generator set 1 through a connecting piece 4 and used for conducting electricity. A plurality of grounding electrodes 12 are arranged below the outer grounding ring 3, the grounding electrodes 12 are inserted into the ground, rotatable threaded rods 10 and lower rotating rods 11 are arranged in the grounding electrodes 12, upper rotating rods 7 fixed with the threaded rods 10 are arranged on the grounding electrodes 12, the upper rotating rods 7 are rotatably installed with the lantern rings 5 through rotating seats 6, and the lantern rings 5 are in sliding contact with the outer grounding ring 3 and can be slidably adjusted in position.

Can drive upper portion bull stick 7, threaded rod 10 and lower part bull stick 11 through rotatory hand wheel and rotate, threaded rod 10 during the rotation with the screw hole in earthing pole 12 mutually support, can make upper portion bull stick 7 pulling external ground ring 3 and internal ground ring 2 wholly move down, lower part bull stick 11 is moving down simultaneously, lower part bull stick 11 moves up down, accessible ring body 16 and connecting rod 17 drive spike 15 and rotate around pivot 14, spike 15 shifts out gradually from vertical groove 13, present and strut the form.

The stability of the grounding electrode 12 placed underground can be increased by the opening of the supporting feet 15, the adhesive force is increased, the grounding electrode can not be pulled out accidentally,

the above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (5)

1. The utility model provides a lightning protection earthing device of wind-powered electricity generation field wind generating set, is including setting up internal grounding ring (2) and external grounding ring (3) in generating set (1) outside, its characterized in that, internal grounding ring (2) are located the inboard of external grounding ring (3), internal grounding ring (2) and external grounding ring (3) all are connected with generating set (1) through connecting piece (4), the cover is established by a plurality of lantern rings (5) on external grounding ring (3), be fixed with on the diapire of lantern ring (5) and rotate and install upper portion bull stick (7) through rotating seat (6), the downside of upper portion bull stick (7) is fixed with threaded rod (10), utmost point (12) are installed to the outside screw thread of threaded rod (10), set up in grounding pole (12) with threaded rod (10) assorted screw hole, be fixed with lower part bull stick (11) on the diapire of threaded rod (10), and lower part bull stick (11) are located the threaded hole of earthing pole (12), it is equipped with a plurality of rings (16) to rotate the cover on the lateral wall of lower part bull stick (11), it has connecting rod (17) to articulate on the lateral wall of ring (16), the one end that ring (16) were kept away from in connecting rod (17) articulates there is spike (15), run through between the surface of earthing pole (12) and the screw hole of inside and set up vertical groove (13) that correspond with spike (15), and spike (15) rotate through pivot (14) and install in vertical groove (13).

2. The lightning protection grounding device for the wind power plant and the wind generating set according to claim 1, characterized in that a top plate (8) is fixed on the top end of the grounding electrode (12), and a plurality of inserted rods (9) are fixed on the bottom wall of the top plate (8).

3. The lightning protection grounding device of the wind power plant wind generating set according to claim 1, characterized in that the ring body (16) is rotatably sleeved on the side wall of the lower rotating rod (11) through two limiting rings.

4. Lightning protection earthing device for wind park wind turbine according to claim 1 or 3, characterized in that each said ring (16) is hinged with two links (17) and each link (17) is hinged with one brace (15).

5. The lightning protection grounding device for the wind power plant wind generating set according to claim 1, characterized in that the top of the supporting foot (15) is inclined towards the axis of the grounding electrode (12), the top end of the supporting foot extends into the threaded hole inside the grounding electrode (12), and the rotating shaft (14) is installed at the position, close to the top end, of the supporting foot (15).

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