科研

风机叶片变形测量-wire

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发布日期:2014-05-19 浏览:

德国不来梅一所科研院所开发出了一款测试台, 可用于测量长度70米的风机叶片机械变形。测试台使用了12支米铱公司拉绳式位移传感器用于测量叶片机械变形。每个连接点安装两支传感器,用于测量弯曲度和扭转度。

The Fraunhofer Institute IWES in Bremerhaven has developed a test rig that can be used to test rotor blades up to 70m in length. The tip of the rotor blade can be distorted by up to 10m due to mechanical loads. For this, the rotor blade is mounted horizontally in the test rig. Steel cables are routed to the rotor using guide pulleys and attached to the rotor blade at various positions either directly or via mechanical clamps.

Twelve  draw-wire  sensors  are  used  on  the  test  rig  for measuring the distortion. Two sensors per traction point measure the deflection and torsion of the rotor blade. For this, the sensors are mounted on rails on the ground; the measuring wire is attached to pre-fabricated eyes on the terminals. The simple handling and the robust design of the sensors were ideal for this application. The draw-wire sensors operate with measuring ranges between 3m and 10m. The digital signal output is provided for further simulations.


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