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  • 权利要求
  • 类似技术
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  • 优先权
    • 专利摘要:
    The pendulum (3) is designed in such a way that with the pendulum weight are built-in shock absorber plates (4) which simultaneously give energy to the pendulum weight (3), these 2 together take energy out of the tower when it is in a counter phase, which provides dampening of the tower.
    公开号:DK201700113A1
    申请号:DKP201700113
    申请日:2017-02-16
    公开日:2018-09-11
    发明作者:Øllgaard Børge
    申请人:Engiso Aps；
    IPC主号:
    专利说明:

    DENMARK (10)
    DK 2017 00113 A1
    (12)
    PATENT APPLICATION
    Patent and Trademark Office
    Int.CI: F03D 80/00 (2016.01) E04B 1/98 (2006.01) F16F 7/08 (2006.01)
    Application Number: PA 2017 00113
    Filing Date: 2017-02-16
    Running Day: 2017-02-16
    Aim. available: 2018-08-17
    Publication date: 2018-09-11
    Applicant:
    ENGISO ApS, Skolegade 85.4 floor, 6700 Esbjerg, Denmark
    Inventor:
    Børge Øllgaard, Torvegade 92.6700 Esbjerg, Denmark
    Clerk:
    Patrade A / S, Ceresbyen 75, 8000 Aarhus C, Denmark
    Title: Device for damping oscillations in a wind turbine tower
    Published publications:
    US 2012/0267207 A1
    DK 156256 B
    US 3568805 A
    DK 153003 B
    DK 142426 B
    WO 2009/068599 A2
    Summary:
    The pendulum (3) is designed in such a way that with the pendulum weight are built-in shock absorber plates (4) which simultaneously give energy to the pendulum weight (3), these 2 together take energy out of the tower when it is in a counter phase, which provides dampening of the tower.
    To be continued...
    DK 2017 00113 A1
    Figure 4
    DK 2017 00113 A1
    Pendulum for vibration damping of wind turbines
    The pendulum is designed in such a way that with the pendulum weight (3) built-in shock absorber plates (4) which simultaneously give energy to the pendulum weight, these 2 together take energy out of the tower when it is in the counter phase which gives damping of the tower.
    The invention relates to a pendulum for damping oscillations in a wind turbine tower.
    The pendulum is with built-in loose weight plates. These weight plates act as shock absorbs when the pendulum strikes against its motion limiting. The loose weight plates are part of the weight of the pendulum. The loose weight plates are between 20 to 40% of the pendulum weight.
    The known pendulums for damping wind turbines, from a Danish patent, have a rubber cushion which the pendulum bumps against. The known pendulums have in addition to extra weight plates for slowing the pendulum movements. This makes the entire system heavier than the design with shock absorber plates built into the pendulum.
    The invention provides a pendulum of the kind mentioned initially which has the same energy to stop the wind turbine tower movements, where shock absorbs the plates are part of the weight of the pendulum.
    This is achieved according to the invention in that the shock absorber plates have a size (diameter) which is larger than the pendulum itself and is part of the pendulum weight.
    The loose impact absorber plates will slow the pendulum by sliding the plates when they encounter motion limiting, thereby slowing the pendulum due to resistance under the plates.
    By splitting the shock absorbs the plates into several smaller plates of different sizes, the mold absorber will be smooth and provide soft braking as more plates come into contact with the motion limiter.
    DK 2017 00113 A1
    FIG. 1: Displays a wind turbine tower with vibration damper located in the tower.
    FIG. 2: Displays wind turbine tower with vibration damper located at the top of a tower section.
    FIG. 3: Shows the invention in section of damper where the pendulum hangs in 1 suspension. FIG. 4: Shows the invention in section of damper where the pendulum hangs in 2 or more suspension items. Wire (6) Displays a wind turbine tower. (5) Shows example of position of vibration damper in the tower. (9) Tower section where vibration damper is located at the top. 8 platform from which the oscillator can be serviced. (5) Swivel damper. (7) Tower flange.
    (1) Shows oscillation damper in which the pendulum hangs. 2 The suspension in which the pendulum hangs. (2) The length of the suspension is adjusted to the frequency of the wind turbine tower. (3) Displays the fixed part of the pendulum. (4) Displays the location of the weight plates - also called shock absorber plates.
    The plates (4) are of different sizes and cause the upper plate, which is the largest, to strike only when the pendulum (3) swings and strikes against (1) movement, this starts with giving little resistance to the pendulum and when (4) ) plate # 2 frame increases the force.
    DK 2017 00113 A1
    权利要求:
    Claims (1)
    [1]
    Patent claims.
    1. Pendulums used today to dampen wind turbine towers are built up to a weight and this delivers its energy to the tower either through rubber ring, friction plates, a fluid or hydraulic dampers, characterized by having
    5 built-in shock absorber plates (4) which at the same time give weight to the pendulum (3), the shock absorber plates (4) have free movement in the pendulum and have a size (diameter) which is larger than the pendulum (3) which ensures that shock absorbs the plates hitting the motion limiter (1) before the pendulum (3) hits the motion limiter.
    DK 2017 00113 A1

    Figure 1

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    Figure 2
    DK 2017 00113 A1

    Figure 3

    Figure 4
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    同族专利:
    公开号 | 公开日
    DK180124B1|2020-05-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2018-09-11| PAT| Application published|Effective date: 20180817 |
    2020-05-20| PME| Patent granted|Effective date: 20200520 |
    优先权:
    申请号 | 申请日 | 专利标题
    DKPA201700113A|DK180124B1|2017-02-16|2017-02-16|Pendulum for vibration damping of wind turbines|DKPA201700113A| DK180124B1|2017-02-16|2017-02-16|Pendulum for vibration damping of wind turbines|
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