CN115149403A - Lightning current transfer system and wind turbine using the same - Google Patents

Lightning current transfer system and wind turbine using the same Download PDF

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Publication number
CN115149403A
CN115149403A CN202210797884.2A CN202210797884A CN115149403A CN 115149403 A CN115149403 A CN 115149403A CN 202210797884 A CN202210797884 A CN 202210797884A CN 115149403 A CN115149403 A CN 115149403A
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CN
China
Prior art keywords
lightning
lightning receptor
contact ring
installation box
fan blade
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210797884.2A
Other languages
Chinese (zh)
Inventor
张小雷
杜强
郎泽萌
洪楠
姚利
陆畅
王志敏
刘振兴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cgn Dongzhi New Energy Co ltd
Original Assignee
Cgn Dongzhi New Energy Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cgn Dongzhi New Energy Co ltd filed Critical Cgn Dongzhi New Energy Co ltd
Priority to CN202210797884.2A priority Critical patent/CN115149403A/en
Publication of CN115149403A publication Critical patent/CN115149403A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T19/00—Devices providing for corona discharge
    • H01T19/04—Devices providing for corona discharge having pointed electrodes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/30—Lightning protection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/64—Devices for uninterrupted current collection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
    • 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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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Thermal Sciences (AREA)
  • Power Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Wind Motors (AREA)

Abstract

The present invention provides a lightning current transfer system and a wind turbine using the same, comprising a lightning receptor structure installed at an inner tip of a fan blade, and a discharge structure located below the lightning receptor structure and connected to the lightning receptor structure, wherein: the lightning receptor structure comprises an installation box and a lightning receptor which can extend out of and retract into the installation box; the discharging structure comprises a contact wheel which can rotate along with the fan blade and a contact ring sleeved on the generator box; the lightning receptor is rotationally matched with the contact ring through the contact wheel so as to ground the electric charge introduced by the lightning receptor. According to the invention, the lightning receptor is provided with the tip end, so that a large amount of charges can flow out, and a generator set arranged in the generator box is prevented from being damaged; through setting up the spray pipe and through the spray pipe shower nozzle with water injection to rolling contact wheel and contact ring on, thereby utilize the water spray to realize contact wheel and contact ring heat dissipation cooling to reach the purpose of protection.

Description

Lightning current transfer system and wind turbine using the same
Technical Field
The invention relates to the technical field of wind turbines, in particular to a lightning current transmission system and a wind turbine using the same.
Background
Wind turbines or wind generators. In some areas it is well established that wind turbines, due to their size, are susceptible to lightning strikes. The height of the wind turbine is much greater than the surrounding trees and buildings in order to efficiently convert wind energy into electrical energy. In thunderstorms, if lightning strikes the tip of the wind turbine blade. Because the current value is high, the charge quantity is large, the risk is high, and the blade is easy to damage, the electric charge and the current on the blade can be eliminated in time after lightning strikes the blade of the wind turbine, and the method is very important. A lightning current transfer system and a wind turbine using the lightning current transfer system proposed under publication No. CN105793564B for a lightning current transfer system for large wind turbines, which can use most of the components of the lightning current transfer system of small wind turbines and which can be maintained on site. However, in the above solutions, since the surface of the wind turbine blade is smooth and there is no tip or sharp angle, a large amount of charges generated under the induction of the wind turbine blade charges cannot be released quickly, and there is a high possibility that damage may be caused inside the motor linked by the wind turbine blade.
Disclosure of Invention
It is an object of the present invention to provide a lightning current transfer system and a wind turbine using the same to solve the problems set forth in the background art described above.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a lightning current transmission system, is including connecing sudden strain of a muscle structure and discharge structure, connect sudden strain of a muscle structure to install in fan blade's inboard top department, the discharge structure is located the below of connecing sudden strain of a muscle structure and connects sudden strain of a muscle structure to be connected, wherein:
the lightning receiving structure comprises an installation box and a lightning receptor capable of extending out of and retracting into the installation box;
the discharge structure comprises a contact wheel capable of rotating along with a fan blade and a contact ring sleeved on the generator box, and the contact ring is grounded;
the lightning receptor is rotationally matched with the contact ring through the contact wheel so as to ground the electric charge introduced by the lightning receptor.
Preferably, the arrester cartridge is on the install bin, and bottom installation baffle, hydrogel piece and elastic component have in the install bin, the hydrogel piece is used for expanding the jack-up baffle after absorbing water and releases the arrester outside the install bin, thereby the elastic component is used for losing water the back at the hydrogel piece and rebounds the baffle and draw back the arrester to the install bin in, thereby the bottom of arrester is connected with the earth connection that runs through baffle, hydrogel piece and install bin bottom, the contact ring is connected with the earth connection.
Preferably, the hydrogel piece is located terminal surface under the baffle and places the bottom in the install bin, the elastic component adopts the spring, and the suit is on being located the arrester between baffle up end and the install bin top.
Preferably, the upper portion of install bin and the baffle on seted up the diaphragm orifice, the up end of install bin is seted up and is used for the flexible opening of arrester.
Preferably, an electro-hydraulic push rod is installed at the bottom of the inner side of the fan blade, the contact wheel is installed on the electro-hydraulic push rod through a shaft body, the electro-hydraulic push rod stretches and retracts to drive the contact wheel to roll with the contact ring, the grounding wire is arranged along the inner side of the fan blade and connected with the shaft body, and a humidity sensor is installed on the electro-hydraulic push rod.
Preferably, the discharge structure further comprises a spray pipe, a nozzle of the spray pipe faces the contact ring, and the spray pipe is provided with an electromagnetic valve.
In order to achieve the above purpose, the invention also provides the following technical scheme:
the utility model provides an use wind turbine of lightning current transmission system, includes generator box, fan pivot, fan blade and according to any one of the preceding lightning current transmission system, the fan pivot runs through to be installed on the generator box, fan blade installs in the fan pivot, lightning current transmission system is including connecing sudden strain of a muscle structure and discharge structure, connect sudden strain of a muscle structure to install in fan blade's inboard top department, discharge structure is located the below of connecing sudden strain of a muscle structure and is connected with connecing sudden strain of a muscle structure, wherein:
the lightning receptor structure comprises an installation box and a lightning receptor which can extend out of and retract into the installation box;
the discharge structure comprises a contact wheel capable of rotating along with a fan blade and a contact ring sleeved on the generator box, and the contact ring is grounded;
the lightning receptor is rotationally matched with the contact ring through the contact wheel so as to ground the electric charge introduced by the lightning receptor.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the lightning arrester is installed, and the lightning arrester is provided with the tip end, so that a large amount of electric charges can flow out, and a generator set installed in a generator box is prevented from being damaged. Make fan blade's top possess through the arrester and have most advanced or sharp-pointed angle's structure to realize having most advanced just can have a large amount of electric charges, can produce the function of attracting to the lightning, the effectual probability that has reduced the lightning and split to other places. When the wind turbine blade is split, lightning discharges through the tip of the lightning receptor, and electric charges quickly flow out through a grounding wire to be neutralized with the outside, so that large current is introduced into the ground to protect equipment components of the wind turbine.
According to the invention, in sunny weather, the lightning receptor is accommodated in the installation box, and the installation box is installed at the top end of the inner side of the fan blade, so that the lightning receptor is prevented from being damaged by the external environment when the fan blade rotates along with the rotating shaft of the fan. When the weather turns fine gradually after the thunderstorm, the water in the hydrogel block volatilizes and loses water, and the hydrogel shrinks, under the rebound acting force effect condition that the elastic component produced to push back baffle and arrester again to the install bin in, realize accomodating of arrester and hide.
According to the invention, the water spray pipe is arranged, and the water spray pipe nozzle sprays water to the rolling contact wheel and the contact ring, so that the contact wheel and the contact ring are cooled by spraying water, and the purpose of protection is achieved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic rear view of the structure of the present invention;
FIG. 3 is a schematic view of the lightning receptor of the present invention extended out of the installation case;
FIG. 4 is a schematic view of the lightning receptor of the present invention retracted into the installation case;
fig. 5 is a schematic view of the contact wheel and contact ring of the present invention.
In the figure: 1 generator case, 2 fan pivot, 3 fan blades, 4 install bins, 5 connect the ware, 6 baffles, 7 elastic component, 8 hydrogel pieces, 9 diaphragm orifices, 10 openings, 11 earth connection, 12 electric liquid push rods, 13 humidity transducer, 14 contact rings, 15 contact wheel, 16 axis bodies, 17 solenoid valves, 18 shower nozzles, 19 spray pipes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1 to 5, the present invention provides a technical solution:
the utility model provides an use wind turbine of lightning current transmission system, includes generator box 1, fan pivot 2, fan blade 3 and lightning current transmission system, fan pivot 2 runs through and installs on generator box 1, fan blade 3 installs on fan pivot 2, lightning current transmission system is including connecing sudden strain of a muscle structure and discharge structure, connect sudden strain of a muscle structure to install in the inboard top department of fan blade 3, the discharge structure is located the below of connecing sudden strain of a muscle structure and connects sudden strain of a muscle structure to be connected, wherein:
the lightning receptor structure comprises a mounting box 4 and a lightning receptor 5 which can be extended and retracted from the mounting box 4;
the discharging structure comprises a contact wheel 15 capable of rotating along with the fan blade 3 and a contact ring 14 sleeved on the generator box 1, and the contact ring 14 is grounded;
the lightning receptor 5 is in rotational engagement with the contact ring 14 via the contact wheel 15 in order to ground the charge introduced by the lightning receptor 5.
In the present invention, the lightning current transfer system is specifically:
5 cartridge of arrester is on install bin 4, and bottom installation baffle 6, hydrogel piece 8 and elastic component 7 have in the install bin 4, hydrogel piece 8 is used for expanding jack-up baffle 6 after absorbing water and pushes out arrester 5 outside install bin 4, thereby elastic component 7 is used for 8 dehydration back shrinkages of hydrogel piece and rebounds baffle 6 and pull back arrester 5 to install bin 4 in, the bottom of arrester 5 is connected with the earth connection 11 that runs through baffle 6, hydrogel piece 8 and install bin 4 bottom, contact ring 14 is connected with earth connection 11. The hydrogel piece 8 is located baffle 6 lower extreme terminal surface and places the bottom in install bin 4, elastic component 7 adopts the spring, and the suit is on being located 6 up end of baffle and install bin 4 interior lightning arrester 5 between the top. The upper portion of install bin 4 and baffle 6 are last to have seted up diaphragm orifice 9, the opening 10 that is used for the arrester 5 to stretch out and draw back is seted up to the up end of install bin 4.
In the invention, the lightning receptor 5 is installed, and the lightning receptor 5 is provided with a tip end, so that a large amount of charges can flow out, and a generator set installed in the generator box 1 is prevented from being damaged. Make fan blade 3's top possess through arrester 5 and have most advanced or sharp-pointed structure to the realization exists most advanced just can have a large amount of charges, can produce the function of attracting to the lightning, the effectual probability that reduces the lightning and split to other places. When the wind turbine blade 3 is pitched, lightning is discharged through the tip of the lightning receptor 5, and the electric charge is quickly discharged through the grounding wire 11 to be neutralized with the outside, so that a large current is introduced to the ground to protect the equipment components of the wind turbine from being damaged.
According to the invention, in sunny weather, the lightning receptor 5 is accommodated in the installation box 4, and the installation box 4 is installed at the top end of the inner side of the fan blade 3, so that the lightning receptor 5 is prevented from being damaged by the external environment when the fan blade 3 rotates along with the fan rotating shaft 2. And coming temporarily when thunderstorm weather, because air humidity increases in the wind field environment that fan blade 3 located, moist air sees through diaphragm orifice 9, and moist steam in the hydrogel block 8 absorbed the air to realize the inflation, hydrogel block 8 complete inflation extrudees backplate 6, can push out lightning receptor 5 outside installation box 4 like this, and the preferred coil spring of this in-process elastic component 7 produces resilience effort by the complete compression. When the weather turns fine gradually after the thunderstorm, the water in the hydrogel block 8 volatilizes and loses water, and the hydrogel 35 contracts, under the rebound acting force action condition that the elastic part 7 produced, thereby pushing back the baffle 6 and the lightning receptor 5 to the installation box 4 again, and the lightning receptor 5 is hidden.
According to the invention, the plate holes 9 are arranged, so that air can conveniently enter and contact with the hydrogel block 8, the hydrogel block 8 can be contacted with humid air to absorb water vapor to expand, and the water vapor in the hydrogel block 8 volatilizes and contracts after the weather turns fine. The hole 9 is formed in the upper part of the mounting box 4 to avoid that a part of the hole is extruded out of the mounting box 4 along with the hole 9 when the hydrogel block 8 expands, so that the expansion of the hydrogel block 8 can be used for generating sufficient thrust.
According to the invention, the elastic member 7 is preferably a spiral spring, the elasticity of the compression spring is smaller than the thrust generated by the expansion of the hydrogel block 8, and the elasticity of the compression spring is larger than the friction force for overcoming the pushing baffle 6 and the lightning receptor 5. The hydrogel mass 8 is fully expanded and the helical spring can just be compressed or fully compressed. And the grounding wire 11 is made of a wire with better flexibility so as to adapt to the repeated expansion and contraction of the hydrogel block 8.
Specifically, electric-hydraulic push rod 12 is installed to the inboard bottom of fan blade 3, contact wheel 15 passes through the axis body 16 and installs on electric-hydraulic push rod 12, electric-hydraulic push rod 12 stretches out and draws back and drives and realize rolling between contact wheel 15 and the contact ring 14, earth connection 11 arranges along fan blade 3's inboard and is connected with axis body 16, install humidity transducer 13 on the electric-hydraulic push rod 12. The discharge structure further comprises a spray pipe 19, a spray head 18 of the spray pipe 19 faces the contact ring 14, and an electromagnetic valve 17 is mounted on the spray pipe 19.
According to the invention, the lightning current introduced by the lightning receptor 5 needs to be introduced into the ground, so that the lightning current passes through the grounding wire 11, but the fan blade 3 rotates along with the fan rotating shaft 2, so that the tail end of the grounding wire 11 cannot be directly grounded to prevent the grounding wire 11 from being pulled and disconnected, so that the current needs to be conducted from the grounding wire 11 to the contact ring 14 on the generator box 1 through the contact wheel 15, the contact wheel 15 rotates along with the fan rotating shaft 2 but the contact ring 14 does not rotate along with the fan rotating shaft 2, and the contact ring 14 is grounded, so that the current generated by the charge on the lightning receptor 5 can quickly flow into the ground.
According to the invention, when thunderstorm weather comes, the air humidity in the wind field environment where the fan blade 3 is located is increased, the humidity is detected by the humidity sensor 13, the wind field SCADA system controls the electro-hydraulic push rod 12 to extend for a proper or set distance, so that the contact wheel 15 is pushed to the contact ring 14 to be in contact with the contact ring 14, and as the contact wheel 15 rotates along with the fan rotating shaft 2, the contact wheel 15 can rotate along the contact ring 14, so that the current of the grounding wire 11 is transmitted to the contact wheel 15 through the shaft body 16, and then is transmitted to the contact ring 14 through the contact wheel 15, and the contact ring 14 is grounded, so that the current generated by the charge on the lightning receptor 5 can quickly flow into the ground.
In the present invention, the necessary mechanism of the lightning current transmission system may be an insulator or set according to actual use by using the electrical conductors such as the shaft body 16, the contact wheel 15 and the rest of the upper surface of the contact ring 14.
In the invention, in thunderstorm weather, as shown in fig. 5, the wind field SCADA system controls the electro-hydraulic push rod 12 to push the contact wheel 15 down to roll with the contact ring 14, and controls the electro-hydraulic push rod 12 to pull the contact wheel 15 back to be separated from the contact ring 14 after weather turns clear. While the contact wheel 15 and the contact ring 14 roll in contact, certain heat is generated due to rolling, so that heat dissipation of the contact wheel 15 and the contact ring 14 is not facilitated, and the water spray pipe 19 is arranged to spray water so as to realize cooling, so that the contact wheel 15 is protected from rolling. Specifically, a water spray pipe 19 is connected with a water source and a pump, the wind field SCADA system controls the pump to be started, the electromagnetic valve 17 is controlled to be opened, and the water spray pipe 19 sprays water to the rolling contact wheel 15 and the contact ring 14 through a spray head 18.
The invention, the remaining parts not described, are the same as, or known or realizable by the prior art and will not be described in detail here.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The lightning current transmission system is characterized by comprising a lightning receiving structure and a discharging structure, wherein the lightning receiving structure is arranged at the top end of the inner side of a fan blade (3), the discharging structure is positioned below the lightning receiving structure and is connected with the lightning receiving structure, and the lightning current transmission system is characterized in that:
the lightning receptor structure comprises an installation box (4) and a lightning receptor (5) which can extend out of and retract into the installation box (4);
the discharging structure comprises a contact wheel (15) capable of rotating along with the fan blade (3) and a contact ring (14) sleeved on the generator box (1), and the contact ring (14) is grounded;
the lightning receptor (5) is rotationally matched with the contact ring (14) through the contact wheel (15) so as to ground the electric charge introduced by the lightning receptor (5).
2. A lightning current transfer system according to claim 1, characterised in that the lightning receptor (5) is inserted on the installation box (4) and the bottom is equipped with a baffle (6), in the installation box (4) there are hydrogel blocks (8) and elastic members (7), the hydrogel blocks (8) are used to expand after water absorption to jack up the baffle (6) to push the lightning receptor (5) out of the installation box (4), the elastic members (7) are used to contract after water loss of the hydrogel blocks (8) to rebound the baffle (6) to pull the lightning receptor (5) back into the installation box (4), the bottom of the lightning receptor (5) is connected with a ground wire (11) running through the bottom of the baffle (6), the hydrogel blocks (8) and the installation box (4), the contact ring (14) is connected with the ground wire (11).
3. A lightning current transfer system according to claim 2, characterised in that the hydrogel block (8) is located at the lower end of the baffle (6) and placed at the bottom in the mounting box (4), and that the resilient member (7) is spring mounted on the lightning receptor (5) between the upper end of the baffle (6) and the top in the mounting box (4).
4. A lightning current transfer system according to claim 2 or 3, characterised in that holes (9) are provided in the upper part of the installation box (4) and in the baffle plate (6), and that the upper end surface of the installation box (4) is provided with through openings (10) for the extension and retraction of the lightning receptor (5).
5. A lightning current transfer system according to claim 2, characterised in that an electro-hydraulic push rod (12) is mounted at the bottom of the inner side of the fan blade (3), the contact wheel (15) is mounted on the electro-hydraulic push rod (12) through a shaft body (16), the electro-hydraulic push rod (12) stretches and retracts to drive the contact wheel (15) and the contact ring (14) to roll, the grounding wire (11) is arranged along the inner side of the fan blade (3) and connected with the shaft body (16), and a humidity sensor (13) is mounted on the electro-hydraulic push rod (12).
6. A lightning current transfer system according to claim 1 or 5, characterised in that the discharge structure further comprises a spout (19), the spray head (18) of the spout (19) facing the contact ring (14), the spout (19) having a solenoid valve (17) mounted thereon.
7. A wind turbine using a lightning current transfer system, comprising a generator housing (1), a fan shaft (2), a fan blade (3) and a lightning current transfer system according to any of the preceding claims, the fan shaft (2) being through-mounted on the generator housing (1), the fan blade (3) being mounted on the fan shaft (2), the lightning current transfer system comprising a lightning receptor structure and a discharge structure, the lightning receptor structure being mounted at the inner top end of the fan blade (3), the discharge structure being located below the lightning receptor structure and being connected with the lightning receptor structure, wherein:
the lightning receptor structure comprises an installation box (4) and a lightning receptor (5) which can extend out of and retract into the installation box (4);
the discharging structure comprises a contact wheel (15) capable of rotating along with the fan blade (3) and a contact ring (14) sleeved on the generator box (1), and the contact ring (14) is grounded;
the lightning receptor (5) is rotationally matched with the contact ring (14) through the contact wheel (15) so as to ground the electric charge introduced by the lightning receptor (5).
CN202210797884.2A 2022-07-06 2022-07-06 Lightning current transfer system and wind turbine using the same Pending CN115149403A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210797884.2A CN115149403A (en) 2022-07-06 2022-07-06 Lightning current transfer system and wind turbine using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210797884.2A CN115149403A (en) 2022-07-06 2022-07-06 Lightning current transfer system and wind turbine using the same

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Publication Number Publication Date
CN115149403A true CN115149403A (en) 2022-10-04

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CN (1) CN115149403A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09301272A (en) * 1996-05-13 1997-11-25 Hifumi Narabe Life vest for sea disaster or the like
CN106762467A (en) * 2016-12-13 2017-05-31 云南能投海装新能源设备有限公司 A kind of lightning protection system for wind power generation plant
CN207199388U (en) * 2017-07-26 2018-04-06 中瑞电气有限公司 Insulator with adjust automatically discharging gap apparatus
CN209334444U (en) * 2018-12-22 2019-09-03 浙江飞达环保材料有限公司 A kind of three-roller planetary rolling mill
CN210239918U (en) * 2019-07-26 2020-04-03 云南省能源研究院有限公司 Blade lightning protection belt for wind generating set
CN211280518U (en) * 2020-01-07 2020-08-18 南华大学 Tire temperature monitoring and heat sink
CN113417813A (en) * 2021-07-16 2021-09-21 深圳普泰电气有限公司 Lightning protection device for wind driven generator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09301272A (en) * 1996-05-13 1997-11-25 Hifumi Narabe Life vest for sea disaster or the like
CN106762467A (en) * 2016-12-13 2017-05-31 云南能投海装新能源设备有限公司 A kind of lightning protection system for wind power generation plant
CN207199388U (en) * 2017-07-26 2018-04-06 中瑞电气有限公司 Insulator with adjust automatically discharging gap apparatus
CN209334444U (en) * 2018-12-22 2019-09-03 浙江飞达环保材料有限公司 A kind of three-roller planetary rolling mill
CN210239918U (en) * 2019-07-26 2020-04-03 云南省能源研究院有限公司 Blade lightning protection belt for wind generating set
CN211280518U (en) * 2020-01-07 2020-08-18 南华大学 Tire temperature monitoring and heat sink
CN113417813A (en) * 2021-07-16 2021-09-21 深圳普泰电气有限公司 Lightning protection device for wind driven generator

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