• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Lightning receiver for a wind turbine blade. The invention provides a ray receiving arrangement (11, 12) for a wind turbine blade (10) comprising at least one self-tapping screw (21) having a head (21) and a threaded rod (23) as an element external metallic receiver for receiving rays on one side of the wind turbine blade (10) and an internal element comprising an electrically conductive block (20) configured with at least one unthreaded hole (41) to cooperate with said threaded rod (23) and connected to a down conductor (18) of a grounding arrangement. The internal element is attached to at least one shell (17) of the wind turbine blade with an adhesive force capable of resisting the torque applied to the self-tapping screw (21) for screwing it into the unthreaded hole (41). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2592323A1
    申请号:ES201500381
    申请日:2015-05-26
    公开日:2016-11-29
    发明作者:Victor MARCH NOMEN；Juan MADOZ ZABALEGUI；Jose Manuel MARTINEZ OLMO
    申请人:Gamesa Innovation and Technology SL；
    IPC主号:
    专利说明:

    The bolt contact 14 and the electrically conductive internal block 15 a
    through a flat or conical surface it is necessary to avoid physical damage in
    the threaded connection 31 between them because in this arrangement most of
    lightning currents are transferred through the contact surface 16. Of
    5 on the contrary, the bolted joint can suffer physical damage due to the flow of
    lightning currents
    As shown in Figures 3a, 3b and 3c a receiving arrangement of
    9-ray known located in a region of the tip of the wind turbine blade
    10 comprises as receiving elements bolts 14 on both sides of
    10 the wind turbine blade 10 connected to an electrically internal block
    conductor 15 that is attached to at least one of the shells 17, 19 and
    connected to the down conductor 18. Mechanical and electrical connections
    between the bolts 14 and the electrically conductive internal block 15 are
    similar to those described for the 8-ray receiving arrangement.
    fifteen The transmission of lightning currents from the receiving elements 14 to the
    electrically conductive internal block 15 must guarantee a transmission
    correct beam and allow adjustment of the receiving elements 14 to the
    outer surface of the shells 17, 19 to meet the requirements
    aerodynamic as well as noise reduction.
    2 o However, in the receiving arrangements of rays 8, 9 there may be
    a space G between the outer surfaces of the receiving elements 14 and
    shells 17, 19 (see Figures 1 c and 3C) due to variations in
    shell thickness as a result of tolerances during its process
    of manufacturing causing an incorrect position of the internal block
    25 electrically conductive 5 or an unexpected dimensional variation between the
    head of a receiving element 14 and the surrounding shell.
    This invention is directed to the solution of this drawback.
    SUMMARY OF THE INVENTION
    30
    The invention provides a lightning receiving arrangement for a wind turbine blade comprising at least one self-tapping screw that
    It has a head and a threaded rod as a metallic receiving element
    external to receive lightning on one side of the wind turbine blade and an element
    internal comprising an electrically conductive block configured with at
    minus an unthreaded hole to cooperate with said threaded rod and
    5 connected to a down conductor of a grounding arrangement. He
    Self-tapping screw material has higher hardness and lower ductility than
    the electrically conductive block material and the threaded rod and the hole
    non-threaded are sized so that the threaded connection between them
    can transmit all lightning currents received by the car screw
    10 screwed. The internal element is attached to at least one shell of the blade
    wind turbine with an adhesive force capable of withstanding the torque applied to the
    self-tapping screw to thread it into the unthreaded hole.
    Advantageously, the internal element further comprises a
    insulating coating for the electrically conductive block to prevent its *
    fifteen corrosion and avoid a lightning strike.
    Advantageously, the threaded rod and the non-threaded hole also
    are sized so that their threaded connection can have a
    length that ensures proper alignment of the auto screw head
    threaded with the outer surface of the wind turbine blade shell to
    2 o purposes of aerodynamic continuity.
    Advantageously, the threaded rod and the non-threaded hole have a
    cylindrical shape and the ratio between their respective diameters D1, D2 is
    between 1.03-1.60.
    Advantageously, the self-tapping screw is made of steel, steel
    25 stainless or tungsten and the electrically conductive block is made of
    aluminum, copper or brass.
    In one embodiment for a region of the blade tip of
    wind turbine, the lightning receiver arrangement also comprises a screw
    additional self-tapping, as a metallic receiving element to receive lightning
    3O on the opposite side of the wind turbine blade, which has a head and a
    threaded rod and electrically conductive block is also configured
    with an additional non-threaded hole to cooperate with the threaded rod of Figures 5 and 6 are views similar to Figures 2c and 4c including a given the possibility of variations of the thickness of the shells 17 the
    additional self-tapping screw.
    Other features and advantages of the present invention will be apparent.
    of the detailed description that follows, below, of an embodiment
    5 illustrative of its object, in relation to the accompanying figures.
    BRIEF DESCRIPTION OF THE FIGURES
    Figure 1 a is a schematic plan view of a shovel of
    10 wind turbine with a lightning receiver arrangement known in the art
    located far from the tip of the blade and Figures 1 b and 1 c are sectional views
    of said lightning receiving arrangement that respectively have the element
    receiver aligned and misaligned with respect to the surrounding shell.
    Figure 2a is a schematic plan view of a shovel of
    fifteen wind turbine with a lightning receiver arrangement according to the invention
    located far from the tip of the blade, Figure 2b is a sectional view of the
    components of the lightning receiver arrangement and Figure 2c is a view in
    section of said lightning receiver arrangement mounted on the blade of
    wind turbine with the receiving element properly aligned with the shell
    2 o surrounding.
    Figure 3a is a schematic plan view of a shovel of
    wind turbine with a lightning receiver arrangement known in the art
    located in the region of the tip of the blade and Figures 3b and 3c are seen in
    section of said lightning receiving arrangement that respectively have the
    25 receiver element aligned and misaligned with respect to the surrounding shell.
    Figure 4a is a schematic plan view of a shovel of
    wind turbine with a lightning receiver arrangement according to the invention
    located in the region of the blade tip, Figure 4b is a view
    sectional schematic of the components of the lightning arrangement and the
    3 o Figure 4c is a sectional view of said lightning receiving arrangement
    mounted on the wind turbine blade with the receiving elements
    properly aligned with the surrounding shells.
    insulating coating for the conductor of electricity.
    Detailed description of the invention
    5
    A lightning receiving arrangement 11 (see Figs. 2a, 2b, 2c) located far away
    of the tip of a wind turbine blade 10 comprises a car screw
    threaded 21 as a receiving element and, as an internal element, a block
    electrically conductive 20 configured with an unthreaded hole 41 for
    10 cooperate with self-tapping screw 21 so that its threaded connection
    allow lightning currents to be transmitted between both components without the need
    of a "flat or conical contact surface", as in the prior art.
    The self-tapping screw 21 has a threaded rod 25 in diameter
    01, a piercing tip at one end of the threaded rod 25, and a
    fifteen head 23 at the opposite end of the threaded rod 25. Head 23 is
    provided with rotation transmission means for a tool
    screw drive such as a screwdriver or wrench.
    The electrically conductive block 20 is configured with a hole not
    threaded 41 of diameter 02 slightly smaller than the diameter 01 of the screw
    2 o self-threaded 21 to allow a strong threaded connection between them by applying
    a pair to the head 23 of the self-tapping screw 21 with a tool
    screw drive. In particular, the relationship between 01 and 02 must be
    between 1.03-1.60. This provision requires that the block
    electrically conductive 20 is attached to the shell 17 with an adhesive force
    25 able to withstand that pair.
    The self-tapping screw 21 must be made of a material with a
    higher hardness and lower ductility with respect to block material
    electrically conductive 20. Steel, stainless steel or tungsten are
    Typical materials for self-tapping screw 21 while materials
    30 Typical for the electrically conductive block 20 are aluminum, copper or
    brass.
    threaded rod 25 of self-tapping screw 21 and unthreaded hole 41 of
    electrically conductive block 20 must be sized so that
    its threaded connection must have, for the entire possible range of variation of
    5 thickness, a length L (see Fig. 2c) that ensures, on the one hand, the robust
    electrical connection that is necessary for the transmission of all currents
    lightning through said threaded connection and, on the other hand, the alignment of the
    head 23 of the self-tapping screw 21 with the outer surface of the shell
    17 of the wind turbine blade 10 for aerodynamic continuity purposes.
    10 A lightning 12 receiving arrangement (see Figs. 4a, 4b, 4c) located in the
    tip region of a wind turbine blade 10 comprises a screw of
    additional self-tapping 22, which has a threaded rod 26 of diameter 01, a
    drill tip disposed at one end of threaded rod 26, and a
    head 24 disposed at the opposite end of the threaded rod 26, as
    fifteen receiver element on the other side of the wind turbine blade 10 and the block
    electrically conductive 20 is configured with an unthreaded hole
    additional 42 to cooperate with the additional self-tapping screw 22 so
    that its threaded connection allows lightning current to be transmitted between the two
    components without the need for a "flat or conical contact surface",
    2 o as in the prior art.
    The characteristics of the threaded connection between the car screw
    additional thread 22 and additional non-threaded hole 42 are similar to that of the
    self-tapping screw 21 and unthreaded hole 41.
    In the embodiments shown in Figures 5 and 6, the internal block of
    25 the lightning receiving arrangements 11, 12 also comprises a
    insulating coating 27 for the electrically conductive block 20. The
    insulating coating 27 prevents corrosion of the block electrically
    driver 20 and receive the rays.
    Although the present invention has been described in connection with several
    3 o embodiments, will be appreciated from the specification that it can be
    make various combinations of elements, variations or improvements, and are within
    of the scope of the invention as defined by the appended claims.
    权利要求:
    Claims (13)
    [1]

    1. A lightning receiver arrangement (11, 12) for a shovel of
    wind turbine (10) comprising at least one metallic receiving element
    5 external to receive lightning on one side of the wind turbine blade (10) and a
    internal element attached at least to the inner face of a shell (17) of the blade
    of wind turbine (10) and connected to a down conductor (18) of a
    grounding device of the wind turbine blade (10), characterized
    why:
    10 -the external metal receiving element is a self-tapping screw (21)
    which has a head (23) and a threaded rod (25);
    -the inner element comprises an electrically conductive block (20)
    configured with at least one unthreaded hole (41) to cooperate with said
    threaded rod (25);
    fifteen -the self-tapping screw material (21) has greater hardness and less
    ductility than the electrically conductive block material (20) and the stem
    threaded (25) and the unthreaded hole (41) are sized so that the
    threaded connection between them can transmit all lightning currents
    received by the self-tapping screw (21);
    2 o -the inner element is attached to the housing (17) with an adhesive force
    able to withstand the torque applied to the head (23) of the car screw
    threaded (21) to thread it into the unthreaded hole (41).
    [2]
    2. A lightning receiver arrangement (11, 12) according to claim 1,
    25 wherein the internal element further comprises an insulating coating (27)
    for the electrically conductive block (20).
    [3]
    3. A lightning receptor arrangement (11, 12) according to any of the
    claims 1-2, wherein the threaded rod (25) and the non-threaded hole
    3 o (41) are also sized so that their threaded connection can have
    a length that ensures correct alignment of the screw head (23)
    self-tapping (21) with the outer surface of the housing (17) of the blade
    wind turbine (10) for aerodynamic continuity purposes.
    [4]
    4. A lightning receptor arrangement (11, 12) according to any of the
    5 claims 1-3, wherein the threaded rod (25) and the non-threaded hole
    (41) have a cylindrical shape with the relationship between their
    respective diameters D1, D2 between 1.03-1.60.
    [5]
    5. A lightning receptor arrangement (11, 12) according to any of the
    10 claims 1-4, wherein:
    -the self-tapping screw (21) is made of steel, stainless steel or
    tungsten;
    -the electrically conductive block (20) is made of aluminum, copper or
    brass.
    fifteen
    [6]
    6. A lightning receiver arrangement (12) according to any of the
    claims 1-5, further comprising a self-tapping screw
    additional (22) as a metallic receiver element to receive a lightning strike
    on the opposite side of the wind turbine blade (10) that has a head (24) and
    2 o a threaded rod (26) in which:
    -the electrically conductive block (20) is also configured with
    an additional non-threaded hole (42) to cooperate with the threaded rod (26)
    of the additional self-tapping screw (22);
    -the additional self-tapping screw material (22) has greater hardness
    25 And less ductility the material of the electrically conductive block (20) and the
    threaded rod (26) of the additional self-tapping screw (22) and the hole not
    Additional threaded (42) are sized so that the threaded connection
    between them can transmit all the lightning currents received by the screw
    additional self-tapping (22).
    30
    [7]
    7. A lightning receiver arrangement (12) according to claim 6, in the
    that the threaded rod (26) of the additional self-tapping screw (22) and the
    Additional non-threaded hole (42) are also sized so that the threaded connection between them can have a length that ensures correct alignment of the head (24) of the additional self-tapping screw (22) with the outer surface of the shell (19) of the wind turbine blade (10)
    5 for aerodynamic continuity purposes.
    [8]
    8. A lightning receptor arrangement (12) according to any of claims 6-7, wherein the threaded rod (26) of the additional self-tapping screw (22) and the additional non-threaded hole (42) have a shape
    10 cylindrical, the ratio between their respective diameters 01, 02 being between 1.03 to 1.60.
    [9]
    9. A lightning receiver arrangement (12) according to any of the
    claims 6-8, wherein the additional self-tapping screw (22) is made of steel, stainless steel or tungsten.
    18 8
    FIG.1a
    FIG.1b
    ~ G
    T
    FIG.3a
    9 ~
    FIG.3b
    9 ~
    ~
    - G
    T
    FIG.3e
    10 18 12
    ',' -----.....: z: == ----------
    FIG. 4a
    [21 ]
    twenty-one ............
    - + 02 +
    +01+
    22 ~
    FIG.4b
    [12 ]
    12 ............
    [11 ]
    eleven ............
    I
    FIG. 5
    [12 ]
    12 ........... 17 21
    I
    FIG. 6
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4630168A|1985-12-16|1986-12-16|The Boeing Company|Lightning protection fastener|
    US20070081900A1|2005-10-06|2007-04-12|Nordex Energy Gmbh|Method for the production of a leadthrough in a fibre compound material, as well as a rotor blade for a wind energy facility with a leadthrough|
    WO2014124642A1|2013-02-13|2014-08-21|Vestas Wind Systems A/S|Wind turbine blades|
    DK174232B1|2000-12-13|2002-10-07|Lm Glasfiber As|Combined lightning receptor and drainage channel in wind turbine wings|
    DK176298B1|2003-09-15|2007-06-18|Lm Glasfiber As|Method of lightning protection of a blade for a wind power plant, a lightning protection wing and a wind power plant with such a blade|
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    JP5242920B2|2007-01-23|2013-07-24|株式会社日立製作所|Split blade for windmill|
    WO2008101506A2|2007-02-19|2008-08-28|Vestas Wind Systems A/S|Wind turbine rotor blade and method of manufacturing such rotor blade|
    US8182227B2|2008-02-01|2012-05-22|General Electric Company|Wind turbine blade with lightning receptor|
    ES2557998T5|2008-04-15|2019-06-24|Siemens Ag|Wind turbine blade with an integrated beam driver and method for manufacturing it|
    ES2377669T3|2008-07-02|2012-03-29|Siemens Aktiengesellschaft|Wind turbine blade with lightning receiver and method to protect the surface of a wind turbine blade|
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    EP2722522A1|2012-10-22|2014-04-23|Siemens Aktiengesellschaft|Lightning receptor arrangement for a wind turbine rotor blade|
    NL2010553C2|2013-04-02|2014-10-06|Composite Technology Ct B V|A WINDMILL LEAF, A WINDMILL INCLUDING A SUCH SHEET, A METHOD FOR MANUFACTURING A WINDMILL SHEET, AND A METHOD FOR REPAIRING A SHEET MANUFACTURED BY SUCH A METHOD.|
    CN203232964U|2013-04-28|2013-10-09|郑宇辉|Self-tapping temporary grounding body|
    CN203339639U|2013-05-08|2013-12-11|中国一冶集团有限公司|Lightning arrester preventing water seepage and leakage of steel plate tile roof|
    GB2519331A|2013-10-17|2015-04-22|Vestas Wind Sys As|Improvements relating to lightning protection systems for wind turbine blades|CN111226036A|2017-08-24|2020-06-02|维斯塔斯风力系统有限公司|Wind turbine rotor blade lightning receptor arrangement|
    法律状态:
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201500381A|ES2592323B1|2015-05-26|2015-05-26|Lightning receiver for a wind turbine blade|ES201500381A| ES2592323B1|2015-05-26|2015-05-26|Lightning receiver for a wind turbine blade|
    US15/149,490| US10718315B2|2015-05-26|2016-05-09|Lighting receptor for a wind turbine blade|
    DK16001112.8T| DK3098437T3|2015-05-26|2016-05-17|Lightning receptor for a wind turbine blade|
    EP16001112.8A| EP3098437B1|2015-05-26|2016-05-17|Lightning receptor for a wind turbine blade|
    ES16001112T| ES2744265T3|2015-05-26|2016-05-17|Lightning receiver for a wind turbine blade|
    CN201610354184.0A| CN106194611B|2015-05-26|2016-05-25|Lightning receptor for a wind turbine blade|
    MX2016006801A| MX2016006801A|2015-05-26|2016-05-25|Lightning receptor for a wind turbine blade.|
    BR102016011969A| BR102016011969A2|2015-05-26|2016-05-25|ray receiver for a wind turbine blade|
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