CN215908007U - Lightning receiving system, blade of wind generating set and wind generating set - Google Patents

Lightning receiving system, blade of wind generating set and wind generating set Download PDF

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Publication number
CN215908007U
CN215908007U CN202122574747.6U CN202122574747U CN215908007U CN 215908007 U CN215908007 U CN 215908007U CN 202122574747 U CN202122574747 U CN 202122574747U CN 215908007 U CN215908007 U CN 215908007U
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China
Prior art keywords
lightning receptor
lightning
base
blade
hole
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CN202122574747.6U
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Chinese (zh)
Inventor
付磊
闻笔荣
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Jinfeng Technology Co ltd
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Xinjiang Goldwind Science and Technology Co Ltd
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Priority to CN202122574747.6U priority Critical patent/CN215908007U/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

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  • Elimination Of Static Electricity (AREA)

Abstract

The utility model provides a lightning receiving system, a blade of a wind generating set and the wind generating set. The lightning receiving system comprises: the lightning arrester comprises a lightning arrester base, a lightning arrester base and a lightning arrester base, wherein at least one through hole is formed in the lightning arrester base; at least one first lightning receptor arranged on one side in the thickness direction of the lightning receptor base; at least one second lightning receptor arranged on the other side in the thickness direction of the lightning receptor base; at least one connector for connecting the first and second lightning receptors to each other through the through hole; the wire, the lightning receptor base is connected to the wire, thereby being grounded through the wire. According to the utility model, the number of openings of the lightning receptor base can be reduced or the number of lightning receptors can be increased, since two lightning receptors can be mounted for one through hole.

Description

Lightning receiving system, blade of wind generating set and wind generating set
Technical Field
The utility model relates to the technical field of wind power generation, in particular to a lightning receiving system, a blade of a wind generating set and the wind generating set.
Background
The wind generating set is used as a high and large metal building and is easy to be struck by lightning. The blade is the highest part in the wind generating set, and the probability of lightning strike is higher. To reduce the damage of lightning to the blade, a lightning receptor system is installed on the blade.
Existing lightning receptors systems include a lightning receptor base and a lightning receptor. The lightning receptor base is placed inside the blade, one side of the lightning receptor is connected to the base through the blade shell, and the other side is exposed to the surface of the blade.
The lightning receptor base is generally a plate-like structure, and is provided with an opening and tapping to form a nut structure. The lightning receptor is typically formed by adding a bolt structure to a relatively large metal cylinder. In practice the bolt structure of the lightning receptor may be connected to the nut structure of the lightning receptor base by means of a threaded connection.
However, the existing lightning receptor systems only have one lightning receptor on one mounting hole, resulting in a large number of openings in the lightning receptor base or a limited number of lightning receptors.
In addition, according to the statistics of lightning strike damage to the blade, the lightning strike of the blade mostly occurs at the blade tip. Therefore, the lightning protection effect of the blade is better facilitated by arranging a plurality of lightning receptors on the blade tip. In the existing lightning receptor systems, the thickness of the base of the lightning receptor of the blade is generally above 10mm, taking into account the firmness of the threaded connection, so that at least 10mm of space is required inside the blade for placement. However, since the tip area size and space is the smallest of the entire blade, with the conventional lightning receptor system described above, the blade space is not sufficient to place the lightning receptor system.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to provide a lightning receptor system, a blade and a wind turbine generator set comprising such a lightning receptor system, wherein the number of openings in the lightning receptor base can be reduced or increased.
It is a further object of the utility model to provide a lightning receptor system, a blade and a wind turbine generator set comprising such a lightning receptor system, which allows to reduce the size of the lightning receptor base.
According to an aspect of the present invention, there is provided a lightning receiving system, including: the lightning arrester comprises a lightning arrester base, a lightning arrester base and a lightning arrester base, wherein at least one through hole is formed in the lightning arrester base; at least one first lightning receptor arranged on one side in the thickness direction of the lightning receptor base; at least one second lightning receptor arranged on the other side in the thickness direction of the lightning receptor base; at least one connector for connecting the first and second lightning receptors to each other through the through hole; the wire, the lightning receptor base is connected to the wire, thereby being grounded through the wire.
Optionally, the connecting member may be a screw rod having an external thread, a second threaded hole may be opened in the second lightning receptor, and one end of the screw rod may be connected with the second threaded hole in a matching manner.
Optionally, the second threaded aperture may pass through at least a portion of the second lightning receptor.
Alternatively, the connector may be fixed to a surface of the first lightning receptor facing the second lightning receptor.
Optionally, a first threaded hole may be opened in the first lightning receptor, and the other end of the screw rod may be connected with the first threaded hole in a matching manner.
Optionally, the first threaded aperture may pass through at least a portion of the first lightning receptor.
Alternatively, the lightning receptor base may be a square plate, a trapezoidal plate, a cylindrical plate or a profiled plate with branches.
Alternatively, the through hole may be a threaded hole, and the connecting member may be fastened to the through hole.
Alternatively, at least one extension may extend radially outward from the outer periphery of the lightning receptor base, a wire cannula being disposed within the extension in the axial direction of the extension, the wire being inserted into the wire cannula and secured to the extension.
Optionally, the lightning receptor base is cylindrical and the two extensions are symmetrically arranged with respect to the centre of the lightning receptor base.
Optionally, the connecting piece is a screw rod with external threads, a first threaded hole is formed in the first lightning receptor, the first threaded hole penetrates through a part of the first lightning receptor, a second threaded hole is formed in the second lightning receptor, the second threaded hole penetrates through a part of the second lightning receptor, the screw rod penetrates through the through hole, and two ends of the screw rod are respectively connected with the first threaded hole and the second threaded hole in a matched manner.
According to another aspect of the utility model, there is provided a blade for a wind park, the blade comprising an upper shell and a lower shell, the blade further comprising a lightning receptor system as described above, a lightning receptor base being provided within the shell of the blade and being fixed to the upper shell and/or the lower shell, a second lightning receptor being exposed from the upper shell and a first lightning receptor being exposed from the lower shell.
Optionally, the first and second lightning receptor are arranged in a position corresponding to a tip region of the blade and/or in a position corresponding to a body region of the blade.
According to another aspect of the utility model, there is provided a wind park comprising a blade as described above.
According to the utility model, the number of openings of the lightning receptor base can be reduced or the number of lightning receptors can be increased, since two lightning receptors can be mounted for one through hole.
According to the present invention, since the first lightning receptor, the second lightning receptor and the lightning receptor base can share the fastening force, the thickness of the lightning receptor base can be reduced compared to prior art lightning receptor systems. Since the thickness of the lightning receptor base can be reduced compared to prior art lightning receptor bases, it is suitable to mount the lightning receptor base in a tip region or a body region having a smaller interior space.
Drawings
The above and other objects and features of the present invention will become more apparent from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a cross-sectional view of an exploded state of a lightning receptor system according to an embodiment of the utility model;
FIG. 2 is a sectional view of the lightning receptor system of FIG. 1 in an assembled state;
fig. 3, 4 and 5 are plan views of a lightning receptor base according to variant embodiments of the utility model;
FIG. 6 is a schematic view of the connection of a lightning receptor base to a conductor according to an embodiment of the utility model;
FIG. 7 is a cross-sectional view of a lightning receptor system according to another embodiment of the utility model in an exploded state;
FIG. 8 is a cross-sectional view of a lightning receptor system according to another embodiment of the utility model in an exploded state;
FIG. 9 is a cross-sectional view of a lightning receptor base according to a variant embodiment of the utility model;
FIG. 10 is a perspective view of one embodiment of the lightning receptor base of FIG. 9;
FIG. 11 is a plan view of the lightning receptor base of FIG. 10;
FIG. 12 is a plan view of another embodiment of the lightning receptor base of FIG. 9;
fig. 13 is a sectional view of a lightning receptor base according to a variant embodiment of the utility model.
The reference numbers illustrate: 10 is the blade, 11 is the upper shell body, 11a is the first hole, 12 is the lower shell body, 12a is the second hole, 20 is the lightning system, 21 is the lightning arrester base, 21a is the through-hole, 21b is the extension, 21c is the wire intubate, 22 is first lightning arrester, 22a is first screw hole, 23 is the second lightning arrester, 23a is the second screw hole, 24 is the connecting piece, 25 is the wire.
Detailed Description
Embodiments of the present invention will now be described in detail with reference to the drawings, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
Fig. 1 is a sectional view of an exploded state of a lightning receptor system according to an embodiment of the utility model, and fig. 2 is a sectional view of an assembled state of the lightning receptor system in fig. 1.
The present invention provides a lightning strike system 20. The lightning receptor system 20 according to an embodiment of the utility model comprises: the lightning arrester comprises a lightning arrester base 21, wherein at least one through hole 21a is formed in the lightning arrester base 21; at least one first lightning receptor 22 arranged on one side in the thickness direction of the lightning receptor base 21; at least one second lightning receptor 23 arranged on the other side in the thickness direction of the lightning receptor base 21; at least one connector 24, the connector 24 connecting the first and second lightning receptors 22 and 23 to each other through the through hole 21 a; the conductor 25, the lightning receptor base 21 is connected to the conductor 25 and thus grounded via the conductor 25.
According to an embodiment of the present invention, two lightning receptors (i.e. the first lightning receptor 22 and the second lightning receptor 23) can be correspondingly installed in one through hole 21a, so that the number of openings in the lightning receptor base can be reduced or the number of lightning receptors can be increased.
In addition, according to an embodiment of the present invention, since the first lightning receptor 22 and the second lightning receptor 23 can be connected to each other by only one connecting member 24, the first lightning receptor 22, the second lightning receptor 23 and the lightning receptor base 21 can all together take on the fastening force, so that the thickness of the lightning receptor base 21 can be reduced compared to prior art lightning receptor systems. Since the thickness of the lightning receptor base 21 may be reduced compared to prior art lightning receptor bases, it is suitable to mount the lightning receptor base 21 in the tip region of the blade 10. However, it should be understood that the lightning receptor system provided according to the utility model may also be applied to other regions of the blade, and is not limited to the tip region.
Hereinafter, the lightning receptor system 20 according to the embodiment of the utility model will be described in detail.
Fig. 1 and 2 show chordwise cross-sectional views of the blade 10, and in particular, the chordwise cross-sections in fig. 1 and 2 may be chordwise cross-sections corresponding to the tip of the blade 10. As shown in fig. 1, the blade 10 includes an upper shell 11 and a lower shell 12.
As shown in fig. 1 and 2, a lightning receptor system 20 according to an embodiment of the utility model may comprise a lightning receptor base 21. The lightning receptor base 21 may be arranged within the shell of the blade 10 enclosed by the upper shell 11 and the lower shell 12. The lightning receptor base 21 may be fixed to the inner surface of the housing, e.g. by structural glue or glass cloth or the like to the inner surface of the upper housing 11 and/or to the inner surface of the lower housing 12. The lightning receptor mount 21 is separated from the upper and lower housings 11, 12 by a distance within the housing, e.g. the lightning receptor mount 21 may be arranged in a substantially intermediate position of the upper and lower housings 11, 12. As an example, the lightning receptor base 21 may be separated from the upper and lower housings 11, 12 by a distance, e.g. by a separating block.
According to embodiments of the present invention, the lightning receptor base 21 may have various shapes. Fig. 3, 4 and 5 are plan views of a lightning receptor base according to variant embodiments of the utility model. As shown in fig. 3 to 5, the lightning receptor base 21 may be rectangular in shape as shown in fig. 3, trapezoidal in shape as shown in fig. 4 or shaped with branches as shown in fig. 5. However, the utility model is not limited thereto, the lightning receptor base 21 may also have a cylindrical shape or the like.
The lightning receptor base 21 may comprise an electrically conductive material, for example made of a metallic material, to function as a conducting current. The specific material of the lightning receptor base 21 is not limited, and materials conventional in the art may be applied. For example, the lightning receptor base 21 may be constituted by a metal plate. Alternatively, the thickness of the metal plate may be 2mm to 4 mm. Optionally, the cross-sectional area of the metal plate is not less than 70mm2。
According to an embodiment of the present invention, at least one through hole 21a may be formed in the lightning receptor base 21, and the diameter of the through hole 21a is matched with the diameter of the connecting member 24, so that the connecting member 24 passes through the through hole 21 a. The lightning receptor base 21 of fig. 3 has four through holes 21a, the lightning receptor base 21 of fig. 4 has three through holes 21a, and the lightning receptor base 21 of fig. 5 is provided with one through hole 21a in the main leg and the branch, respectively. However, the specific number and arrangement form of the through holes 21a are not particularly limited.
A lightning receptor system 20 according to an embodiment of the utility model may comprise at least one first lightning receptor 22 and at least one second lightning receptor 23. The first lightning receptor 22 and the second lightning receptor 23 may be arranged in pairs on both sides of one through hole 21 a. For example, the first lightning receptor 22 may be arranged on a side of the lightning receptor base 21 corresponding to the lower shell 12, and the second lightning receptor 23 may be arranged on a side of the lightning receptor base 21 corresponding to the upper shell 11.
According to an embodiment of the present invention, the lightning receptor system 20 may further comprise a connector 24. As an example, the connector 24 may be fixed to the first lightning receptor 22, through the through hole 21a and to the second lightning receptor 23.
According to the embodiment of the present invention, the connection member 24 is a threaded rod with an external thread, a second threaded hole 23a is opened in the second lightning receptor 23, and one end of the threaded rod is connected with the second threaded hole 23a of the second lightning receptor 23 in a matching manner. As shown in fig. 1, the second threaded hole 23a may be a through hole completely penetrating the second lightning receptor 23.
According to an embodiment of the utility model, the connection 24 may be provided on a surface of the first lightning receptor 22 facing the second lightning receptor 23 and may be fixed to this surface. Alternatively, the connector 24 may be integrally formed with the first lightning receptor 22 to improve the coupling force of the connector 24 with the first lightning receptor 22.
According to an embodiment of the utility model, the first lightning receptor 22 and the second lightning receptor 23 may be cylindrical, but are not limited thereto. The diameters of the first lightning receptor 22 and the second lightning receptor 23 may be equal to each other, but are not limited thereto. According to an embodiment of the present invention, the first lightning receptor 22, the second lightning receptor 23 and the connection member 24 may be made of an electrically conductive material, for example, a metallic material, to function as a current-guiding member. The specific type of the conductive material is not limited, but conventional materials in the art may be applied.
According to an embodiment of the present invention, the upper shell 11 of the blade 10 is formed with a first hole 11a, and the lower shell 12 of the blade 10 is formed with a second hole 12 a. The first hole 11a and the second hole 12a may be provided at positions corresponding to each other on the upper case 11 and the lower case 12. Alternatively, the shape of the first and second apertures 11a, 12a may correspond to the shape of the second and first lightning receptor 23, 22, respectively, such that the second and first lightning receptor 23, 22 are inserted and received in the first and second apertures 11a, 12 a. For example, when the second lightning receptor 23 and the first lightning receptor 22 are cylindrical in shape, the first hole 11a and the second hole 12a may also be circular. However, the present invention is not limited thereto. In addition, the diameter of the first hole 11a may be slightly larger than the diameter of the second lightning receptor 23 and the diameter of the second hole 12a may be slightly larger than the diameter of the first lightning receptor 22, in order to facilitate the insertion of the second lightning receptor 23 and the first lightning receptor 22 into the first hole 11a and the second hole 12 a.
According to an embodiment of the present invention, as shown in fig. 2, after the first lightning receptor 22 and the second lightning receptor 23 are installed, the outer surface of the first lightning receptor 22 and the outer surface of the second lightning receptor 23 may be exposed to the outside, respectively. Specifically, the outer surface of the first lightning receptor 22 may be flush with the outer surface of the lower shell 12 or slightly higher than the outer surface of the lower shell 12, and the outer surface of the second lightning receptor 23 may be flush with the outer surface of the upper shell 11 or slightly higher than the outer surface of the upper shell 11.
FIG. 6 is a schematic view of the connection of the lightning receptor base to the conductor according to an embodiment of the utility model. According to an embodiment of the present invention, the lightning receptor system 20 may further comprise a conductor 25, the conductor 25 may be connected to the lightning receptor base 21, and the conductor 25 may be grounded, thereby conducting lightning current on the first lightning receptor 22 and the second lightning receptor 23 to ground. The connection of the wire 25 to the lightning receptor base 21 is not particularly limited and may be made using prior art connection means (e.g., welding, bolting, crimping, etc.). When the lightning receptor base 21 is thin, the conductor 25 may be connected to the lightning receptor base 21 by means of welding or bolting.
In fig. 6, one lightning receptor base 21 is arranged in the tip region of the blade 10 and two lightning receptor bases 21 are provided in the body region of the blade 10. However, the number and the location of the lightning receptor bases in the blade according to the utility model are not limited thereto. The lightning receptor base 21 (e.g. one lightning receptor base 21 arranged in the blade region of the blade 10) may be connected to two wires 25 simultaneously.
Fig. 7 is a sectional view of a lightning receptor system according to another embodiment of the utility model in an exploded state. The difference of the lightning receptor in fig. 7 compared to the lightning receptor in fig. 1 is that the second threaded hole 23a in the second lightning receptor 23 does not extend through the entire second lightning receptor 23, but only through a part of the second lightning receptor 23. Correspondingly, the length of the connector 24 may be slightly shorter than the length of the connector 24 in fig. 1. The structure of the other components of the lightning receptor system in fig. 7 is identical to the structure of the other components of the lightning receptor system in fig. 1, and their repeated description will be omitted here in order to avoid redundancy.
Fig. 8 is a sectional view of an exploded state of a lightning receptor system according to another embodiment of the utility model. The difference of the lightning receptor system in fig. 8 compared to the lightning receptor system in fig. 1 is that the connection member 24 and the first lightning receptor 22 are separate members. Specifically, in fig. 8, the connector 24 and the first lightning receptor 22 are two members, and a first threaded hole 22a is opened in the first lightning receptor 22, and the connector 24 can be fastened into the first threaded hole 22 a. In addition, although the first threaded hole 22a shown in fig. 8 is a through hole that completely penetrates the first lightning receptor 22, the present invention is not limited thereto, and the first threaded hole 22a may penetrate only a portion of the first lightning receptor 22. The structure of the other components of the lightning receptor system in fig. 8 is identical to the structure of the other components of the lightning receptor system in fig. 1, and their repeated description will be omitted here in order to avoid redundancy.
Fig. 9 is a sectional view of a lightning receptor base according to a variant embodiment of the utility model, fig. 10 is a perspective view of an embodiment of the lightning receptor base of fig. 9, fig. 11 is a plan view of the lightning receptor base of fig. 10, and fig. 12 is a plan view of another embodiment of the lightning receptor base of fig. 9.
When mounting the lightning receptor system in the blade region of the blade 10, the lightning receptor base 21 may be suitably thickened within the allowed space inside the blade 10, as shown in fig. 9. As shown in fig. 10-12, an extension portion 21b may extend radially outward from the outer periphery of the lightning receptor base 21, and a lead cannula 21c may be disposed within the extension portion 21 b.
As shown in fig. 10, the lightning receptor base 21 may be generally cylindrical, with a generally cylindrical extension 21b extending radially outward from the outer circumference of the lightning receptor base 21. In particular, two extensions 21b may be provided along the periphery of the lightning receptor base 21. However, the present invention is not limited thereto, and the number of the extension portions 21b is not particularly limited, for example, only one extension portion 21b is provided in fig. 12, and in addition to this, more than two extension portions 21b may be provided if necessary.
In addition, in fig. 10 and 11, the two extension portions 21b are symmetrically arranged with respect to the center of the lightning receptor base 21, however, the utility model is not limited thereto, and the two extension portions 21b may not be symmetrically arranged with respect to the center of the lightning receptor base 21.
As shown in fig. 10, the radial height of the extension part 21b is smaller than the axial height of the lightning receptor base 21, but the utility model is not limited thereto. Further, the extending length of the extending portion 21b is also not particularly limited. In addition, the extension portion 21b may be formed integrally with or separately from the lightning receptor base 21, which is not particularly limited.
According to an embodiment of the present invention, the wire insertion tube 21c may be disposed within the extension portion 21b in the axial direction of the extension portion 21 b. The lead wire 25 may be inserted into the lead cannula 21c and fixed to the extension 21 b. For example, the wire insertion tube 21c may be crimped to the extension portion 21b by crimping. It will be appreciated that the shape of the extension 21b may be slightly deformed by the pressure after crimping and is therefore not a standard cylindrical shape as in figure 10.
According to the utility model, the connection between the lead and the lightning receptor base can be simplified by providing the extension 21b and opening the lead insertion tube 21 c. The structure of the other components of the lightning receptor system in fig. 9 is identical to the structure of the other components of the lightning receptor system in fig. 1, and their repeated description will be omitted here in order to avoid redundancy.
Fig. 13 is a sectional view of a lightning receptor base according to a variant embodiment of the utility model. In contrast to the lightning receptor base 21 in fig. 9, the through hole 21a in the lightning receptor base 21 in fig. 13 may be a threaded hole. When the through hole 21a is a threaded hole, the connector 24 can be tightly connected with the lightning receptor base 21. In this case, even if the second lightning receptor 23 falls off, the first lightning receptor 22 can be kept in a fixed state. Additionally, it should be understood that while FIG. 13 is a modification of the lightning receptor base 21 on the basis of FIG. 9, the same modification may also be applied to the embodiments of FIGS. 1, 7 and 8.
The utility model may also provide a blade 10 of a wind power plant, the blade 10 comprising an upper shell 11 and a lower shell 12, the blade 10 further comprising a lightning receptor system 20 as described above. The lightning receptor base 21 of the lightning receptor system 20 is arranged in the shell of the blade 10 and is fixed to the upper shell 11 and/or the lower shell 12, the second lightning receptor 23 being exposed from the upper shell 11 and the first lightning receptor 22 being exposed from the lower shell 12. Since the specific structure and the location of the lightning receptor system 20 in the blade 10 are the same as described above, a detailed description thereof will be omitted herein.
The utility model may also provide a wind power plant comprising a blade 10 as described above.
According to the various embodiments of the utility model described above, the number of openings of the lightning receptor base can be reduced or the number of lightning receptors can be increased, since two lightning receptors can be mounted for one through hole.
According to the various embodiments of the utility model described above, the thickness of the lightning receptor base can be reduced compared to prior art lightning receptor systems, since the first lightning receptor, the second lightning receptor and the lightning receptor base can all together take on the fastening force. Since the thickness of the lightning receptor base can be reduced compared to prior art lightning receptor bases, it is suitable to mount the lightning receptor base in the tip region of the blade.
Although the embodiments of the present invention have been described in detail above, those skilled in the art may make various modifications and alterations to the embodiments of the present invention without departing from the spirit and scope of the present invention. It will be understood that modifications and variations may occur to those skilled in the art, which modifications and variations may be within the spirit and scope of the embodiments of the utility model as defined by the appended claims. In addition, the various embodiments described above may be combined with each other without being contradictory to each other.

Claims (14)

1. Lightning receptor system, characterized in that the lightning receptor system (20) comprises:
the lightning receptor comprises a lightning receptor base (21), wherein at least one through hole (21a) is formed in the lightning receptor base (21);
at least one first lightning receptor (22) arranged on one side in the thickness direction of the lightning receptor base (21);
at least one second lightning receptor (23) arranged on the other side in the thickness direction of the lightning receptor base (21);
at least one connector (24), said connector (24) connecting said first lightning receptor (22) and said second lightning receptor (23) to each other through said through hole (21 a);
a conductor (25), the lightning receptor base (21) being connected to the conductor (25) so as to be grounded via the conductor (25).
2. Lightning receptor system according to claim 1, wherein the connector (24) is a threaded rod with an external thread, a second threaded hole (23a) is formed in the second lightning receptor (23), and one end of the threaded rod is in fit connection with the second threaded hole (23 a).
3. Lightning receptor system according to claim 2, wherein the second threaded hole (23a) passes through at least a part of the second lightning receptor (23).
4. Lightning receptor system according to claim 2 or 3, wherein the connection piece (24) is fixed to a surface of the first lightning receptor (22) facing the second lightning receptor (23).
5. Lightning receptor system according to claim 2 or 3, wherein a first threaded hole (22a) is formed in the first lightning receptor (22), and the other end of the threaded rod is fittingly connected to the first threaded hole (22 a).
6. Lightning receptor system according to claim 5, wherein the first threaded hole (22a) passes through at least a part of the first lightning receptor (22).
7. Lightning receptor system according to claim 1, wherein the lightning receptor base (21) is a square plate, a trapezoidal plate, a cylindrical plate or a profiled plate with branches.
8. Lightning receiving system according to claim 1, wherein the through hole (21a) is a threaded hole and the connector (24) is in a tight connection with the through hole (21 a).
9. Lightning receptor system according to claim 1, wherein at least one extension part (21b) extends radially outwards from the outer circumference of the lightning receptor base (21), a wire insertion tube (21c) is arranged within the extension part (21b) in the axial direction of the extension part (21b), the wire (25) is inserted into the wire insertion tube (21c) and fixed to the extension part (21 b).
10. Lightning receptor system according to claim 9, wherein the lightning receptor base (21) is cylindrical and the two extensions (21b) are arranged symmetrically with respect to the center of the lightning receptor base (21).
11. Lightning receptor system according to claim 9 or 10, wherein the connector (24) is a threaded rod with an external thread, a first threaded hole (22a) is cut into the first lightning receptor (22), the first threaded hole (22a) passes through a part of the first lightning receptor (22), a second threaded hole (23a) is cut into the second lightning receptor (23), the second threaded hole (23a) passes through a part of the second lightning receptor (23), the threaded rod passes through the through hole (21a) and is fittingly connected with the first threaded hole (22a) and the second threaded hole (23a) at both ends, respectively.
12. A blade of a wind power plant, the blade (10) comprising an upper shell (11) and a lower shell (12), characterized in that the blade (10) further comprises a lightning receptor system (20) according to any one of claims 1-11, the lightning receptor base (21) being arranged inside the shell of the blade (10) and being fixed to the upper shell (11) and/or the lower shell (12), the second lightning receptor (23) being exposed from the upper shell (11), the first lightning receptor (22) being exposed from the lower shell (12).
13. A blade of a wind park according to claim 12, wherein the first lightning receptor (22) and the second lightning receptor (23) are arranged in a position corresponding to a tip region of the blade (10) and/or in a position corresponding to a body region of the blade (10).
14. A wind park according to claim 12 or 13, characterized in that it comprises a blade (10) of a wind park.
CN202122574747.6U 2021-10-25 2021-10-25 Lightning receiving system, blade of wind generating set and wind generating set Active CN215908007U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122574747.6U CN215908007U (en) 2021-10-25 2021-10-25 Lightning receiving system, blade of wind generating set and wind generating set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122574747.6U CN215908007U (en) 2021-10-25 2021-10-25 Lightning receiving system, blade of wind generating set and wind generating set

Publications (1)

Publication Number Publication Date
CN215908007U true CN215908007U (en) 2022-02-25

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Application Number Title Priority Date Filing Date
CN202122574747.6U Active CN215908007U (en) 2021-10-25 2021-10-25 Lightning receiving system, blade of wind generating set and wind generating set

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