CN210460962U - Fan lightning protection system - Google Patents
Fan lightning protection system Download PDFInfo
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- CN210460962U CN210460962U CN201921285327.2U CN201921285327U CN210460962U CN 210460962 U CN210460962 U CN 210460962U CN 201921285327 U CN201921285327 U CN 201921285327U CN 210460962 U CN210460962 U CN 210460962U
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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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Abstract
The utility model provides a fan lightning protection system, the fan includes rotating hub and cabin, rotating hub is last to be equipped with the arrester and to be close to the first bolt ring in cabin, the cabin is equipped with the second bolt ring that is close to rotating hub, fan lightning protection system includes lightning protection inlayer, lightning protection skin and ground connection subassembly, the lightning protection inlayer is located to the lightning protection inlayer, the lightning protection inlayer sets up on rotating hub and encircles the laminating and set up on the outer loop of first bolt ring, the lightning protection inlayer is connected in the arrester; the lightning protection outer layer is arranged on the engine room and is arranged on the inner ring of the second bolt ring in a surrounding and attaching mode; the grounding assembly is connected to the outer layer of lightning protection and the ground respectively, rotates along with the rotating hub through the inner layer of lightning protection, so that an electromagnetic field is formed between the inner layer of lightning protection and the outer layer of lightning protection, electric charges generated by lightning are conducted to the ground, on the basis of important parts of the protection fan, current flows to the grounding assembly through the minimum impedance path, and the electric charges are conducted to the ground stably, efficiently and uninterruptedly.
Description
Technical Field
The utility model relates to a wind-powered electricity generation wind power generation field especially relates to a fan lightning protection system.
Background
Fans are typically located at a high point above the surrounding area and are therefore easily struck by lightning, especially the fan blades. More than 90% of direct lightning can hit one of the three rotating blades of the fan, and more than 90% of fan structure faults are caused by the lightning strike, so that effective lightning protection measures are taken, and the reduction of the loss caused by the lightning strike is important. At present, the lightning protection design of the blade is usually adopted, wherein a lightning receptor is arranged on the blade to capture lightning, and then the lightning is led into the ground through a guide wire which is laid in an inner cavity of the blade and connected to the root part of the blade, so that the lightning is restrained and the blade is protected. In the normal operation process of the fan, the tip of the blade is the highest point, after the wind turbine runs into an electrified cloud cluster, electric charges can be led into a lightning protection channel of the fan through the blade lightning receptor, the blade tip part firstly contacts the electrified cloud cluster, the current can be effectively conducted to a lightning protection channel of the fan through the blade tip, and strong current can be generated instantly through discharging of the blade tip, so that the blade tip is damaged or destroyed very easily.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem that exists among the prior art, the utility model provides a fan lightning protection system, it is on the basis of the important part of protection fan, realizes the steady and incessant conduction to ground of the electric charge that produces the thunder and lightning.
The utility model provides a fan lightning protection system, fan include rotatory wheel hub and cabin, be equipped with the arrester on the rotatory wheel hub and be close to the first bolt ring in cabin, be equipped with on the cabin and be close to rotatory wheel hub's second bolt ring, its characterized in that includes:
the lightning protection inner layer is arranged on the rotating hub and is arranged on the outer ring of the first bolt ring in a surrounding and attaching mode, and the lightning protection inner layer is connected to the lightning receptor;
the lightning protection outer layer is arranged on the engine room and is arranged on the inner ring of the second bolt ring in a surrounding and attaching mode;
the grounding component is respectively connected to the lightning protection outer layer and the ground;
the lightning protection inner layer rotates along with the rotating hub and forms an electromagnetic field with the lightning protection outer layer, so that charges generated by lightning are conducted to the ground through the lightning protection inner layer, the lightning protection outer layer and the grounding assembly.
In some embodiments, the wind turbine lightning protection system further includes a conductive assembly including a first trigger, a first conductor core and a first insulator connected in sequence, wherein the first conductor core is connected to the lightning protection outer layer.
In some embodiments, the grounding assembly includes a down conductor, and a second trigger and a second insulator respectively connected to the core of the down conductor, one end of the down conductor is connected to the lightning protection outer layer, and the other end thereof is grounded.
In some embodiments, the down conductor comprises a first insulating layer, a first multi-core conductor core, a second insulating layer, a second multi-core conductor core and an insulating outer protective layer, which are sequentially wrapped from inside to outside, wherein the first multi-core conductor core is connected to the lightning protection outer layer.
In some embodiments, the second insulating layer and the second multi-core conductor core are sequentially stripped from one end of the down-lead wire connected with the lightning protection outer layer in a segmented manner, and the second conductor core is wound downwards on the outer wall of the insulating outer protection layer and covered on the insulating outer protection layer through an adhesive layer.
In some embodiments, the number of the down conductors is three, and the down conductors are circumferentially and uniformly connected to the lightning protection outer layer.
In some embodiments, the first insulator or the second insulator is disposed on a plurality of bolts of the second bolt ring.
In some embodiments, the conductive elements are both disposed on the lightning protection outer layer.
In some embodiments, the distance between two adjacent conductive components is 60 millimeters.
In some embodiments, the second multi-core conductor core has a peel termination at a distance of at least 0.25 meters from the peel termination of the second insulation layer.
Compared with the prior art, the utility model discloses beneficial effect lies in: the utility model discloses a lightning protection inlayer that sets up on the first bolt ring on the fan and the lightning protection that sets up on the second bolt ring are outer, the lightning protection inlayer rotates along with rotatory wheel hub, make to form the electromagnetic field between lightning protection skin and the lightning protection inlayer, reach the lightning protection skin with the received electric charge in lightning protection inlayer, the electric charge conducts to ground through the ground connection subassembly with the outer connection of lightning protection again, the realization is on the basis of the important part of protection fan, the electric current flows to ground connection subassembly through minimum impedance path, the electric charge with the thunder and lightning production is steady, high efficiency and incessant conduction to ground.
Drawings
In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having letter suffixes or different letter suffixes may represent different instances of similar components. The drawings illustrate various embodiments generally by way of example and not by way of limitation, and together with the description and claims serve to explain the disclosed embodiments. The same reference numbers will be used throughout the drawings to refer to the same or like parts, where appropriate. Such embodiments are illustrative, and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.
Fig. 1 is a schematic view of a partial structure of a lightning protection system of a wind turbine according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a conductive assembly of a lightning protection system of a wind turbine according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a grounding assembly of a lightning protection system of a wind turbine according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a down conductor of a lightning protection system of a wind turbine according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a stripping structure of a down conductor of a lightning protection system of a wind turbine according to an embodiment of the present invention;
fig. 6 is the utility model discloses fan lightning protection system's overall structure schematic diagram.
The members denoted by reference numerals in the drawings:
1-a first bolt ring; 2-a second bolt ring; 3-lightning protection inner layer; 4-lightning protection outer layer; 5-a grounding assembly; 501-a second flip-flop; 502-a second insulator; 6-a conductive component; 601-a first flip-flop; 602-a first conductor core; 603-a first insulator; 7-down conductor; 701 — a first insulating layer; 702-a first multicore conductor core; 703-a second insulating layer; 704-a second multicore conductor core; 705-insulating outer protective layer; 8-the ground.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in detail with reference to the accompanying drawings and the detailed description. The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and the specific embodiments, but not to be construed as limiting the invention.
The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In the present invention, when it is described that a specific device is located between a first device and a second device, an intervening device may or may not be present between the specific device and the first device or the second device. When a particular device is described as being coupled to other devices, that particular device may be directly coupled to the other devices without intervening devices or may be directly coupled to the other devices with intervening devices.
All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
The utility model provides a fan lightning protection system, wherein the fan includes rotatory wheel hub and cabin, and aerogenerator's key equipment is being held in the cabin of fan, including gear box, generator etc. as shown in fig. 1, be equipped with the first bolt ring 1 that connects dodging ware (not shown in the figure) and be close to the cabin on the rotatory wheel hub, be equipped with the second bolt ring 2 that is close to rotatory wheel hub on the cabin, second bolt ring 2 sets up on the outer loop of first bolt ring 1.
Further, with continuing to refer to fig. 1, the lightning protection system of the fan includes a lightning protection inner layer 3, a lightning protection outer layer 4 and a grounding component 5, the lightning protection outer layer 4 is sleeved on the lightning protection inner layer 3, the lightning protection inner layer 3 is arranged on the rotating hub and is attached to the outer ring of the first bolt ring 1 in a surrounding manner, and rotates along with the rotation of the rotating hub, the lightning protection inner layer 3 is connected to a lightning receptor, the lightning receptor is used for receiving objects struck by lightning, and the lightning protection inner layer 3 can receive electric charges generated by the lightning collected by the lightning receptor and transmit the electric charges out; the lightning protection outer layer 4 is arranged on the engine room and is arranged on the inner ring of the second bolt ring 2 in a surrounding and adhering mode, the lightning protection inner layer 3 rotates along with the rotating hub, an electromagnetic field is formed between the lightning protection outer layer 4 and the lightning protection inner layer 3, and the lightning protection outer layer 4 receives charges conducted to the lightning protection inner layer 3 through the lightning receptor; the grounding component 5 is respectively connected to the lightning protection outer layer 4 and the ground 8, and the grounding component 5 conducts charges collected by the lightning protection outer layer 4 to the ground 8 so as to achieve the purpose of lightning protection. Rotate along with rotatory wheel hub through lightning protection inlayer 3 for form the electromagnetic field between lightning protection inlayer 3 and the outer 4 of lightning protection, finally realize conducting the electric charge that the thunder and lightning produced to ground 8 via lightning protection inlayer 3, the outer 4 of lightning protection and ground connection subassembly 5.
The utility model discloses a lightning protection inlayer 3 that sets up on first bolt ring 1 on the fan and the lightning protection skin 4 that sets up on second bolt ring 2, lightning protection inlayer 3 rotates along with rotatory wheel hub, make form the electromagnetic field between lightning protection skin 4 and the lightning protection inlayer 3, in order to pass to lightning protection skin 4 with the electric charge that lightning protection inlayer 3 received, the electric charge conducts to ground 8 through the ground connection subassembly 5 of being connected with lightning protection skin 4 again, the realization is on the basis of the important part of protection fan, the electric current flows to ground connection subassembly 5 through minimum impedance path, the electric charge with the thunder and lightning production is steady, high-efficient and incessant conduction to ground 8.
In some embodiments, the wind turbine lightning protection system further includes a conductive assembly 6 (as shown in fig. 1 and fig. 2), the conductive assembly 6 includes a first trigger 601, a first conductor core 602 and a first insulator 603, which are connected in sequence, the first conductor core 602 is connected to the lightning protection outer layer 4, and since the conductive assembly 6 connected to the lightning protection outer layer 4 is connected to the first insulator 603, the generated current flows to the grounding assembly 5 through a minimum impedance path, and the current is prevented from flowing backwards to the rotating hub, and the first trigger 601 can improve the efficiency of conducting the electric charge generated by the lightning from the lightning protection inner layer 3 to the lightning protection outer layer 4.
In some embodiments, the grounding assembly 5 includes a down conductor 7 (as shown in fig. 1 and 3), and a second trigger 501 and a second insulator 502 respectively connected to the core of the down conductor 7, the second trigger 501 can improve the efficiency of the electric charge generated by lightning to be conducted from the lightning protection inner layer 3 to the lightning protection outer layer 4, the second insulator 502 can enable the generated current to flow to the ground 8 through a path with minimum impedance, one end of the down conductor 7 is connected to the lightning protection outer layer 4, and the other end of the down conductor is grounded, and the down conductor 7 can eliminate the self-inductance in the lightning protection system of the wind turbine, thereby improving the efficiency of the electric charge conduction.
In some embodiments, fig. 4 is a cross-sectional view of a down conductor 7 of a wind turbine lightning protection system according to an embodiment of the invention, as shown in fig. 4, the down conductor 7 includes a first insulating layer 701, a first multi-core conductor core 702, a second insulating layer 703, a second multi-core conductor core 704 and an insulating outer protective layer 705, which are sequentially wrapped from inside to outside, the first multi-core conductor core 702 is connected to the lightning protection outer layer 4, the down conductor 7 is a multi-core inner conductive core surrounded by a multi-core faraday shield, which, due to skin effect, i.e. alternating current or alternating electromagnetic field in the conductor, the current is concentrated in the "skin" part of the conductor, the high frequency energy flow, such as a lightning stroke, will be concentrated on the skin of a solid conductor, therefore, the structure of the down conductor 7 can not only effectively conduct electricity, but also reduce the quality of the down conductor 7 per unit length and save the material cost of products.
In some embodiments, the end of the down conductor 7 connected to the lightning protection outer layer 4 is sequentially stripped of the second insulating layer 703 and the second multi-core conductor core 704 (as shown in fig. 5), i.e., the first multi-core conductor core 702 is exposed to be directly connected to the lightning protection outer layer 4, and the second insulating layer 703 is left at a section next to the exposed portion of the first multi-core conductor core 702, and the stripped portion of the second conductor core is wound on the outer wall of the insulating outer protection layer 705 and covered thereon by an adhesive layer, which facilitates the operator to directly connect the first multi-core conductor core 702 of the down conductor 7 to the lightning protection outer layer 4.
In some embodiments, the number of the down conductors 7 is three, and the three down conductors are circumferentially and uniformly connected to the lightning protection outer layer 4, as shown in fig. 6, the connection ends of the three down conductors 7 and the lightning protection outer layer 4 are spaced by an angle of 120 degrees, so as to uniformly conduct the electric charges generated by the lightning, and prevent the electric charges from accumulating on the lightning protection outer layer 4 and being not conductive in time.
In some embodiments, with reference to fig. 1, the first insulator 603 or the second insulator 502 is disposed on a plurality of bolts of the second bolt ring 2, the lightning protection outer layer 4 is in insulation connection with the second bolt ring 2 through the first insulator 603 and the second insulator 502, and the first insulator 603 should be disposed at intervals to ensure the insulation connection effect between the lightning protection outer layer 4 and the second bolt ring 2.
In some embodiments, the conductive elements 6 are uniformly distributed on the lightning protection outer layer 4, the plurality of conductive elements 6 improve the efficiency of the inner layer 3 for conducting the electric charge to the outer layer 4, and the uniformly distributed conductive elements 6 can evenly and stably conduct the electric charge to the outer layer 4. The distance between the plurality of conductive members 6 is not limited, and it is sufficient to ensure smooth conduction of electric charges, and preferably, the distance between two adjacent conductive members 6 is 60 mm.
In some embodiments, the distance between the stripped end of the second multi-core conductor core 704 and the stripped end of the second insulation layer 703 is at least 0.25 m, which is realized on the basis of convenient operation of an operator, and can also ensure the connection stability between the down conductor 7 and the lightning protection outer layer 4.
Moreover, although exemplary embodiments have been described herein, the scope thereof includes any and all embodiments based on the present invention with equivalent elements, modifications, omissions, combinations (e.g., of various embodiments across), adaptations or variations. The elements of the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the present specification or during the prosecution of the application, which examples are to be construed as non-exclusive. It is intended, therefore, that the specification and examples be considered as exemplary only, with a true scope and spirit being indicated by the following claims and their full scope of equivalents.
The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more versions thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. Additionally, in the foregoing detailed description, various features may be grouped together to streamline the disclosure. This should not be interpreted as an intention that a disclosed feature not claimed is essential to any claim. Rather, inventive subject matter may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations. The scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the invention can be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.
Claims (10)
1. The utility model provides a fan lightning protection system, fan include rotatory wheel hub and cabin, be equipped with the arrester on the rotatory wheel hub and be close to the first bolt ring in cabin, be equipped with on the cabin and be close to rotatory wheel hub's second bolt ring, its characterized in that includes:
the lightning protection inner layer is arranged on the rotating hub and is arranged on the outer ring of the first bolt ring in a surrounding and attaching mode, and the lightning protection inner layer is connected to the lightning receptor;
the lightning protection outer layer is arranged on the engine room and is arranged on the inner ring of the second bolt ring in a surrounding and attaching mode;
the grounding component is respectively connected to the lightning protection outer layer and the ground;
the lightning protection inner layer rotates along with the rotating hub and forms an electromagnetic field with the lightning protection outer layer, so that charges generated by lightning are conducted to the ground through the lightning protection inner layer, the lightning protection outer layer and the grounding assembly.
2. The wind turbine lightning protection system of claim 1, further comprising a conductive assembly including a first trigger, a first conductor core and a first insulator connected in series, the first conductor core being connected to the lightning protection outer layer.
3. A wind turbine lightning protection system according to claim 2, wherein the grounding assembly comprises a down conductor, and a second trigger and a second insulator respectively connected to a core of the down conductor, one end of the down conductor being connected to the lightning protection outer layer, and the other end thereof being grounded.
4. The wind turbine lightning protection system of claim 3, wherein the down conductor comprises a first insulating layer, a first multi-core conductor core, a second insulating layer, a second multi-core conductor core and an insulating outer protective layer, wherein the first insulating layer, the first multi-core conductor core, the second insulating layer, the second multi-core conductor core and the insulating outer protective layer are sequentially wrapped from inside to outside, and the first multi-core conductor core is connected to the lightning protection outer layer.
5. The wind turbine lightning protection system of claim 4, wherein the end of the down conductor connected to the lightning protection outer layer is sequentially stripped from the second insulating layer and the second multi-core conductor core, and the second multi-core conductor core is wound down on the outer wall of the insulating outer protection layer and covered thereon by an adhesive layer.
6. A wind turbine lightning protection system according to claim 3, wherein the down conductor is three and is circumferentially and evenly connected to the lightning protection outer layer.
7. The wind turbine lightning protection system of claim 3, wherein the first insulator or the second insulator is provided on a plurality of bolts of the second bolt ring.
8. The wind turbine lightning protection system of claim 2, wherein the electrically conductive components are evenly distributed on the lightning protection outer layer.
9. The wind turbine lightning protection system of claim 8, wherein the distance between two adjacent conductive assemblies is 60 millimeters.
10. The wind turbine lightning protection system of claim 5, wherein the stripped terminal of the second multicore conductor core is at a distance of at least 0.25 meters from the stripped terminal of the second insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921285327.2U CN210460962U (en) | 2019-08-08 | 2019-08-08 | Fan lightning protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921285327.2U CN210460962U (en) | 2019-08-08 | 2019-08-08 | Fan lightning protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210460962U true CN210460962U (en) | 2020-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921285327.2U Active CN210460962U (en) | 2019-08-08 | 2019-08-08 | Fan lightning protection system |
Country Status (1)
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|---|---|
| CN (1) | CN210460962U (en) |
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2019
- 2019-08-08 CN CN201921285327.2U patent/CN210460962U/en active Active
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