CN210317622U - Glass fiber blade lightning protection system based on insulation and novel electrical connection - Google Patents
Glass fiber blade lightning protection system based on insulation and novel electrical connection Download PDFInfo
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- CN210317622U CN210317622U CN201921427214.1U CN201921427214U CN210317622U CN 210317622 U CN210317622 U CN 210317622U CN 201921427214 U CN201921427214 U CN 201921427214U CN 210317622 U CN210317622 U CN 210317622U
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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 belongs to the technical field of wind power equipment, specifically disclose a glass fiber blade lightning protection system based on insulation and novel electrical connection, including first blade body lightning receptor mechanism, second blade body lightning receptor mechanism, first binding post, lightning protection branch wire and lightning protection main wire, first blade body lightning receptor mechanism includes first blade body lightning receptor and disc lightning receptor base, and disc lightning receptor base fixes first blade body lightning receptor on the wind power blade surface; the second blade body lightning receiving mechanism is arranged at a position 1m away from the blade tip; the lightning protection branch lead and the lightning protection main lead are both composed of low-voltage leads and medium-voltage leads, the medium-voltage leads are adopted within a range which is 10m away from the blade tip, and the low-voltage leads are adopted in the rest parts. The lightning protection system with the structure can solve the problems that the lightning receptor is far away from the blade tip in the distribution distance, the lightning receptor has low lightning probability and the lightning protection system is poor in insulating property in the prior art.
Description
Technical Field
The utility model belongs to the technical field of wind power equipment, especially, relate to a fine blade lightning protection system of glass based on it is insulating and novel electrical connection.
Background
Wind energy is a renewable green energy source, and wind power (wind power generation) is a rapidly developed industry in all countries in the world and China. A wind driven generator (called a fan for short) is a device for generating electricity by utilizing wind energy; the wind power blade captures wind energy and converts the wind energy into electric energy through the generator, and the wind power blade is a key component in the wind driven generator. The wind turbine is mainly located on the ridge, the seaside, the sea and the like, and the height of the wind turbine is from dozens of meters to nearly two hundred meters, and the wind turbine is the highest position in the wind field; from the lightning perspective, the fan, namely the lightning rod for inducing lightning, is very easy to be struck by lightning. The wind power blade is positioned at the high end of the fan, and the blade tip is positioned at the dynamic highest point of the fan when in operation, so that the wind power blade is most easily subjected to direct lightning stroke. Therefore, the wind power blade is provided with the lightning protection system, and the basic principle of the lightning protection system is as follows: the lightning is introduced through a lightning receptor on the surface of the wind power blade, and then the current is conducted to a metal flange or other structures at the root part of the wind power blade through a lightning protection branch conductor and a lightning protection main conductor inside the wind power blade. In current lightning protection system, all adopt low pressure lightning protection offset conductor to conduct basically, low pressure lightning protection offset conductor can practice thrift the cost, but low pressure lightning protection offset conductor's insulating properties is relatively poor, and to the thunder and lightning of high voltage, low pressure lightning protection offset conductor exists the risk of being punctured. And the present lightning receptor is distributed far away from the blade tip, so that the purpose of effective lightning receptor cannot be achieved, the lightning receptor base is connected complicatedly, and sharp corners exist at multiple positions, so that an electric field is uneven, a metal piece is exposed inside the blade, and the lightning receptor is easy to directly suffer from lightning stroke, thereby influencing the operation safety of the blade.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fine blade lightning protection system of glass based on it is insulating and novel electrical connection to solve among the prior art arrester distribution apart from the apex far away, the problem that the arrester lightning probability is low.
In order to achieve the above purpose, the technical scheme of the utility model is that: a glass fiber blade lightning protection system based on insulation and novel electrical connection comprises a first blade lightning receiving mechanism, a second blade lightning receiving mechanism, a first wiring terminal, a lightning protection branch conductor and a lightning protection main conductor, wherein the first blade lightning receiving mechanism comprises a first blade lightning receiver and a disc lightning receiver base, the disc lightning receiver base fixes the first blade lightning receiver on the surface of a wind power blade, the disc lightning receiver base is connected with the lightning protection branch conductor through the first wiring terminal, the lightning protection branch conductor is used for connecting the disc lightning receiver base with the lightning protection main conductor, and the lightning protection main conductor connects the lightning protection branch conductor with a metal flange at the root part of the wind power blade to provide a current conducting path; the second blade body lightning receiving mechanism is arranged at a position 1m away from the blade tip.
The beneficial effects of this technical scheme lie in: according to relevant data statistics, 67.9% of lightning strokes occur at the position 1m away from the blade tip, so that a second blade lightning receiving mechanism is designed at the position 1m away from the blade tip in the technical scheme. First blade body connects dodging mechanism and second blade body to connect dodging the mechanism and combines together, makes this lightning protection system's the effect of connecing dodging better.
Furthermore, the lightning protection branch lead and the lightning protection main lead are both composed of low-voltage leads and medium-voltage leads, the medium-voltage leads are adopted within a range which is 10m away from the blade tip, and the low-voltage leads are adopted in the rest parts. According to the relevant data, 99% of lightning strikes are at a position 10m away from the blade tip, so that the medium voltage wire is adopted in the part, and the insulation can be improved.
Further, disc arrester base and first binding post are the homogeneous material, disc arrester base and first binding post integrated into one piece. Among the prior art, disc arrester base and binding post adopt threaded connection, and there is the clearance disc arrester base and binding post's contact surface, and have not hard up risk after the conduction thunder and lightning many times, appear the clearance easily during the heavy current conduction and discharge and strike sparks. And the threaded connection form has many sharp corners, which causes the electric field distribution to be very uneven, and the partial discharge is easy to generate in the case of large voltage, which affects the insulation performance of the surrounding materials and causes the insulation material to age. In the technical scheme, the disc lightning arrester base and the first connecting terminal are integrally machined and formed, and no gap or sharp corner exists between the disc lightning arrester base and the first connecting terminal, so that an electric field is uniform, current conduction is smooth, and the situations of partial discharge and gap discharge are avoided; and the disc lightning arrester base and the first wiring terminal are integrally processed and formed, so that the insulation property and the sealing property of metal can be improved.
Further, disc arrester base and first binding post are different materials, disc arrester base and first binding post welding form. Among the prior art, disc arrester base and binding post adopt threaded connection, and there is the clearance disc arrester base and binding post's contact surface, and have not hard up risk after the conduction thunder and lightning many times, appear the clearance easily during the heavy current conduction and discharge and strike sparks. And the threaded connection form has many sharp corners, which causes the electric field distribution to be very uneven, and the partial discharge is easy to generate in the case of large voltage, which affects the insulation performance of the surrounding materials and causes the insulation material to age. In the technical scheme, the disc lightning arrester base and the first connecting terminal are welded into a whole, and no gap or sharp corner exists between the disc lightning arrester base and the first connecting terminal, so that an electric field is uniform, current conduction is smooth, and the conditions of partial discharge and gap discharge are avoided; and the disc lightning arrester base and the first wiring terminal are integrally processed and formed, so that the insulation property and the sealing property of metal can be improved.
Further, the disc lightning arrester base, the first wiring terminal and the tail end of the lightning protection branch lead are integrally formed by injection molding, and after the forming is finished, the withstand voltage grade of the disc lightning arrester base is over 17.5 KV. In the technical scheme, the dielectric strength of the plastic for injection molding is more than 15KV/MM, so that the withstand voltage grade of the lightning receiving system is more than 17.5KV, and the insulation level of a medium-voltage wire is reached.
Further, the second lightning receptor mechanism comprises a second lightning receptor and a columnar lightning receptor base, the columnar lightning receptor base comprises an upper base and a lower base, the middle positions of the upper base and the lower base are symmetrically grooved, and round holes can be formed after the two parts are attached; the conductor part of the lightning protection main conductor is positioned in a round hole of the columnar lightning receptor base, the diameter of the lightning protection main conductor is larger than that of the round hole, and the upper base, the lower base and the conductor part of the lightning protection main conductor are in compression joint and are fixed by screws; the outer terminal surface of column lightning receptor base is perpendicular the tapping in advance, the second blade lightning receptor is installed on column lightning receptor base to both face-to-face contacts.
The closer to the blade tip of the wind power blade, the narrower the space, so that a conventional lightning receptor base cannot be adopted for installation. In the technical scheme, the lightning receptor base is divided into the upper base and the lower base, so that the lightning receptor base can be well applied to the blade tip. The conductor parts of the upper base, the lower base and the lightning protection main conductor are fixed by screw compression joint, and the diameter of the lightning protection main conductor is larger than that of the round hole, so that the lightning protection main conductor and the columnar lightning receptor base can be ensured to be fully contacted and compressed. Meanwhile, the columnar lightning arrester base is directly connected with the lightning protection main conductor in a compression mode, the lightning protection main conductor is not cut off, and a conductor joint is added, so that the main conduction path can continuously and stably conduct current.
Further, the column connects the arrester base overcoat to be equipped with insulating box, and it has the structure to glue to fill between insulating box and the column connects the arrester base. The insulating box and the structural adhesive can enhance the insulating property and the sealing property of the columnar lightning receptor base.
Further, still including the apex of locating the apex mechanism that dodges, apex mechanism that dodges includes apex arrester and second binding post, and the apex of wind-powered electricity generation blade is provided with the mounting groove, apex arrester is installed in the mounting groove, the terminal of second binding post crimping at lightning protection main traverse line, second binding post and apex arrester bolted connection, apex arrester is installed on apex arrester base.
Drawings
FIG. 1 is a schematic structural view of a disk lightning receptor base according to a first embodiment of a lightning protection system for glass fiber blades based on insulation and novel electrical connection according to the present invention;
FIG. 2 is a schematic structural view of a fiberglass blade lightning protection system based on insulation and novel electrical connection of the present invention;
FIG. 3 is a cross-sectional view of a cylindrical lightning receptor base;
fig. 4 is a schematic structural diagram of a disc lightning receptor base according to the second embodiment of the glass fiber blade lightning protection system based on insulation and novel electrical connection.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: disc arrester base 1, first binding post 2, wind-powered electricity generation blade 3, lightning protection main conductor 4, upper base 5, lower base 6, apex lightning receptor mechanism 7, screw 8, structure are glued 9, insulating box 10, lightning protection branch wire 11, first blade lightning arrester 12, second blade lightning arrester 13.
Example one
The examples are substantially as shown in figures 1 to 3: a glass fiber blade lightning protection system based on insulation and novel electrical connection comprises
First blade lightning receiving mechanism, second blade lightning receiving mechanism, apex lightning receiving mechanism 7, first binding post 2, second binding post, lightning protection branch wire 11 and lightning protection main conductor 4, first blade lightning receiving mechanism includes first blade lightning receptor 12 and disc lightning receptor base 1, disc lightning receptor base 1 fixes first blade lightning receptor 12 on wind-powered electricity generation blade 3 surfaces, first binding post 2 is connected disc lightning receptor base 1 and lightning protection branch wire 11, lightning protection branch wire 11 is used for connecting disc lightning receptor base 1 and lightning protection main conductor 4, lightning protection branch wire 4 couples together lightning protection branch wire 11 and the metal flange of 3 roots of wind-powered electricity generation blade, provide the electric current conduction route. As shown in fig. 1, disc lightning arrester base 1 and first binding post 2 are the same kind of material, and disc lightning arrester base 1 and first binding post 2's material is aluminium in this embodiment, and disc lightning arrester base 1 and first binding post 2 integrated into one piece can guarantee like this that the electric field is even, and the electric current conduction is level and smooth, avoids appearing bolted connection's partial discharge and the condition of gap discharge. The disc lightning arrester base 1, the first wiring terminal 2 and the tail end of the lightning protection branch lead 11 are integrally formed by injection molding, the dielectric strength of the plastic used for injection molding reaches more than 15KV/MM, and the withstand voltage grade of the plastic after molding is more than 17.5 KV.
The second blade lightning receiving mechanism is arranged at a position 1m away from the blade tip and comprises a second blade lightning receptor 13 and a columnar lightning receptor base, the columnar lightning receptor base comprises an upper base 5 and a lower base 6, the middle positions of the upper base 5 and the lower base 6 are symmetrically grooved, and circular holes can be formed after the two parts are attached; the conductor part of the main lightning protection wire 4 is positioned in a round hole of the columnar lightning receptor base, the diameter of the main lightning protection wire 4 is larger than that of the round hole, and the upper base 5, the lower base 6 and the conductor part of the main lightning protection wire 4 are fixedly connected in a compression joint mode through 4 phi 8 elastic pads and 4M 8 screws 8; the outer terminal surface of column lightning receptor base is perpendicular the tapping of punching in advance, and second blade lightning receptor 13 is installed on column lightning receptor base to both face-to-face contacts. The column connects the flashing device base overcoat and is equipped with insulating box 10, and it has structure to glue 9 to fill between insulating box 10 and the column connects the flashing device base. The insulation box 10 and the structural adhesive 9 can enhance the insulation and the sealing performance of the columnar lightning receptor base.
Apex lightning receiving mechanism 7 includes apex lightning arrester and second binding post, and wind-powered electricity generation blade 3's apex is provided with the mounting groove, apex lightning arrester is installed in the mounting groove, and second binding post crimping is at lightning protection main traverse line 4's end, second binding post and apex lightning arrester bolted connection.
Example two
The utility model provides a fine blade lightning protection system of glass based on insulation and novel electrical connection, this embodiment lies in with the difference of embodiment one: as shown in fig. 4, the disk lightning receptor base 1 and the first connection terminal 2 are made of different materials in this embodiment, for example, the disk lightning receptor base 1 is made of copper, the first connection terminal 2 is made of aluminum, and the disk lightning receptor base 1 and the first connection terminal 2 are welded by friction welding.
The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (8)
1. The utility model provides a fine blade lightning protection system of glass based on it is insulating with novel electrical connection which characterized in that: the lightning protection device comprises a first blade lightning receiving mechanism, a second blade lightning receiving mechanism, a first wiring terminal, a lightning protection branch conductor and a lightning protection main conductor, wherein the first blade lightning receiving mechanism comprises a first blade lightning receiver and a disc lightning receiver base, the disc lightning receiver base fixes the first blade lightning receiver on the surface of the wind power blade, the disc lightning receiver base is connected with the lightning protection branch conductor by the first wiring terminal, the lightning protection branch conductor is used for connecting the disc lightning receiver base and the lightning protection main conductor, and the lightning protection main conductor connects the lightning protection branch conductor with a metal flange at the root part of the wind power blade to provide a current conducting path; the second blade body lightning receiving mechanism is arranged at a position 1m away from the blade tip.
2. The lightning protection system based on insulation and novel electrical connection of glass fiber blades as claimed in claim 1, wherein: the lightning protection branch lead and the lightning protection main lead are both composed of low-voltage leads and medium-voltage leads, the medium-voltage leads are adopted within a range which is 10m away from the blade tip, and the low-voltage leads are adopted in the rest parts.
3. The lightning protection system based on insulation and novel electrical connection of glass fiber blades as claimed in claim 1, wherein: the disc lightning arrester base and the first wiring terminal are made of the same material, and the disc lightning arrester base and the first wiring terminal are integrally machined and formed.
4. The lightning protection system based on insulation and novel electrical connection of glass fiber blades as claimed in claim 1, wherein: the disc lightning arrester base and the first wiring terminal are made of different materials and are welded together.
5. The lightning protection system based on insulation and novel electrical connection of glass fiber blades as claimed in claim 1, wherein: the disc lightning arrester base, the first wiring terminal and the tail end of the lightning protection branch lead are integrally formed by injection molding, and the withstand voltage grade of the disc lightning arrester base is over 17.5KV after the disc lightning arrester base, the first wiring terminal and the tail end of the lightning protection branch lead are formed.
6. The lightning protection system based on insulation and novel electrical connection of glass fiber blades as claimed in claim 5, wherein: the second lightning receptor mechanism comprises a second lightning receptor and a columnar lightning receptor base, the columnar lightning receptor base comprises an upper base and a lower base, the middle positions of the upper base and the lower base are symmetrically grooved, and circular holes can be formed after the two parts are attached; the conductor part of the lightning protection main conductor is positioned in a round hole of the columnar lightning receptor base, the diameter of the lightning protection main conductor is larger than that of the round hole, and the upper base, the lower base and the conductor part of the lightning protection main conductor are in compression joint and are fixed by screws; the outer terminal surface of column lightning receptor base is perpendicular the tapping in advance, the second blade lightning receptor is installed on column lightning receptor base to both face-to-face contacts.
7. The lightning protection system based on insulation and novel electrical connection of glass fiber blades as claimed in claim 6, wherein: the column connects the arrester base overcoat to be equipped with insulating box, and it has the structure to glue to fill between insulating box and the column connects the arrester base.
8. The lightning protection system based on insulation and novel electrical connection of glass fiber blades as claimed in claim 1, wherein: still receive the mechanism of dodging including the apex of locating the apex, apex is received the mechanism of dodging and is included apex arrester and second binding post, and the apex of wind-powered electricity generation blade is provided with the mounting groove, apex arrester is installed in the mounting groove, the crimping of second binding post is at the end of lightning protection main conductor, second binding post and apex arrester bolted connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921427214.1U CN210317622U (en) | 2019-08-30 | 2019-08-30 | Glass fiber blade lightning protection system based on insulation and novel electrical connection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921427214.1U CN210317622U (en) | 2019-08-30 | 2019-08-30 | Glass fiber blade lightning protection system based on insulation and novel electrical connection |
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| CN210317622U true CN210317622U (en) | 2020-04-14 |
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| CN201921427214.1U Active CN210317622U (en) | 2019-08-30 | 2019-08-30 | Glass fiber blade lightning protection system based on insulation and novel electrical connection |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727711A (en) * | 2021-01-04 | 2021-04-30 | 株洲时代新材料科技股份有限公司 | Lightning protection device for wind driven generator blade |
| CN113323822A (en) * | 2021-07-16 | 2021-08-31 | 上海风雷盾科技有限公司 | Lightning protection device of wind power blade |
| CN113833616A (en) * | 2021-09-14 | 2021-12-24 | 洛阳双瑞风电叶片有限公司 | Wind-powered electricity generation blade lightning protection system |
| CN114576107A (en) * | 2022-03-10 | 2022-06-03 | 西安联瑞科技实业有限责任公司 | Lightning-protection assembly and wind power blade lightning-protection system |
| CN115313156A (en) * | 2022-07-27 | 2022-11-08 | 西安时代科亿机电设备制造有限公司 | Fan blade lightning protection device and packaging method |
-
2019
- 2019-08-30 CN CN201921427214.1U patent/CN210317622U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727711A (en) * | 2021-01-04 | 2021-04-30 | 株洲时代新材料科技股份有限公司 | Lightning protection device for wind driven generator blade |
| CN113323822A (en) * | 2021-07-16 | 2021-08-31 | 上海风雷盾科技有限公司 | Lightning protection device of wind power blade |
| CN113833616A (en) * | 2021-09-14 | 2021-12-24 | 洛阳双瑞风电叶片有限公司 | Wind-powered electricity generation blade lightning protection system |
| CN114576107A (en) * | 2022-03-10 | 2022-06-03 | 西安联瑞科技实业有限责任公司 | Lightning-protection assembly and wind power blade lightning-protection system |
| CN115313156A (en) * | 2022-07-27 | 2022-11-08 | 西安时代科亿机电设备制造有限公司 | Fan blade lightning protection device and packaging method |
| CN115313156B (en) * | 2022-07-27 | 2024-04-12 | 西安时代科亿机电设备制造有限公司 | Lightning protection device for fan blade and packaging method |
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Effective date of registration: 20230721 Address after: Room 185, General Office, No. 9, Keji Avenue, High tech Industrial Development Zone, Changji Hui Autonomous Prefecture, Xinjiang, 831100 Patentee after: Xinjiang Chengfei New Materials Co.,Ltd. Address before: 131300 No.2 Xinggong Road, Da'an City, Baicheng City, Jilin Province Patentee before: JILIN CHONGTONG CHENGFEI NEW MATERIAL Co. |