IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0018372
(2008-01-23)
|
등록번호 |
US-8142157
(2012-03-27)
|
우선권정보 |
JP-2007-012504 (2007-01-23) |
발명자
/ 주소 |
- Kita, Masakazu
- Kominato, Yuki
|
출원인 / 주소 |
- Fuji Jukogyo Kabushiki Kaisha
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
4 |
초록
▼
To provide a light and economical separable blade for a wind turbine that is also equipped with a lightning rod function. A separable blade for a wind turbine wherein the blade as a whole is assembled by connecting two electrically non-conductive part blades 1T and 1R in the lateral direction, compr
To provide a light and economical separable blade for a wind turbine that is also equipped with a lightning rod function. A separable blade for a wind turbine wherein the blade as a whole is assembled by connecting two electrically non-conductive part blades 1T and 1R in the lateral direction, comprising metal fasteners 4, 5, 6, and 7 for fastening together the two adjacent part blades, and lightning discharge conductive wires 8 and 9, provided in an inner blade portion. The fastener 4 is exposed on the blade surface of the part blade 1T, and is connected to the lightning discharge conductive wire 9 through the other fasteners 5, 6, and 7, or a lightning discharge conductive wire 8. The lightning discharge conductive wire 9 extends to the blade root.
대표청구항
▼
1. A separable blade for a wind turbine wherein non-conductive part blades are connected in series in the longitudinal direction to assemble the blade as a whole, comprising: a fastener for fastening together two adjacent part blades, disposed in an inner blade portion; anda lightning discharge cond
1. A separable blade for a wind turbine wherein non-conductive part blades are connected in series in the longitudinal direction to assemble the blade as a whole, comprising: a fastener for fastening together two adjacent part blades, disposed in an inner blade portion; anda lightning discharge conductive wire that extends to a blade root, disposed in said inner blade portion;wherein a portion of said fastener is exposed on the blade surface of at least one of said two part blades, and at least the portion of said fastener exposed at the blade surface comprises an electrically conductive material, and is connected electrically to said lightning discharge conductive wire. 2. A separable blade for a wind turbine of claim 1, further comprising a lightning receptor part on a blade tip part. 3. A separable blade for a wind turbine of claim 1, wherein said lightning discharge conductive wire is connected to a plurality of said fasteners that are provided. 4. A separable blade for a wind turbine comprising: a non-conductive first part blade;a non-conductive second part blade wherein the blade tip side end surface thereof is connected to the blade root side end surface of said first part blade;a fastener for fastening said first part blade and said second part blade; anda lightning discharge conductive wire that extends to a blade root, disposed in an inner blade portion;wherein a first hole part that is open on the blade surface and a second hole part that is communicated with said first hole part and that is open on the blade root side end surface of said first part blade are formed in a blade root side end portion of said first part blade; anda third hole part that is open on the blade surface and a fourth hole part that is communicated with said third hole part and that is open on the blade tip side end surface of said second part blade and continuously communicates with said second hole part are formed in a blade tip side end portion of said second part blade;wherein said fastener comprises:a first fastener that is disposed within said first hole part and locked by said first hole part;a second fastener that is disposed within said third hole part and locked by said third hole part; anda third fastener, which passes through said second hole part and said fourth hole part, which continuously communicate with each other, for connecting said first fastener to said second fastener, to tightly connect said first part blade to said second part blade;wherein at least one of said first fastener and said second fastener is made from an electrically conductive material and one end surface thereof is exposed at the blade surface through said hole part, and is connected electrically to said lightning discharge conductive wire. 5. A separable blade for a wind turbine of claim 4, wherein a cover member is provided for covering an opening that opens at the blade surface of either said first hole part or said third hole part, and the fastener of the other hole part is exposed at the blade surface. 6. A separable blade for a wind turbine of claim 5, wherein said third fastener is a rod member having an external threaded portion on the tip portion thereof, wherein said fastener comprises a nut that threads onto said external threaded portion and that is housed within either said first hole part or said third hole part, and a jack bolt that screws onto the peripheral part of said nut to jack up said nut, wherein said lightning discharge conductive wire is connected to said jack bolt. 7. A separable blade for a wind turbine of claim 4, wherein said third fastener is a rod member having an external threaded portion on the tip portion thereof, wherein said fastener comprises a nut that threads onto said external threaded portion and that is housed within either said first hole part or said third hole part, and a jack bolt that screws onto the peripheral part of said nut to jack up said nut, wherein said lightning discharge conductive wire is connected to said jack bolt. 8. A separable blade for a wind turbine of claim 7, wherein the cover member is provided for covering the opening of the hole part that opens at the blade surface, the hole part being either said first hole part or said third hole part that houses said nut. 9. A separable blade for a wind turbine of claim 4, further comprising a lightning receptor part on a blade tip part. 10. A separable blade for a wind turbine of claim 4, wherein said lightning discharge conductive wire is connected to a plurality of said fasteners that are provided.
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