Guide apparatus for turbomachines
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United States of America Patent
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Jul 19, 2016
Grant Date -
Aug 22, 2013
app pub date -
Aug 19, 2011
filing date -
Aug 30, 2010
priority date (Note) -
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Abstract
The invention relates to a guide apparatus for turbomachines, in particular for Francis or Kaplan turbines or pumps or pump turbines having a plurality of guide blades which can be actuated via in each case one link on a common adjusting member. Here, every guide blade or every second guide blade can be equipped with a bending element. A bending-failure link can have a screw connection and a bending body element. The screw connection is prestressed and is configured with a defined fracture cross section. The triggering force on the bending-failure link and the holding force after a fracture of the bending element can therefore be selected independently of one another. The guide blades are protected against damage by foreign bodies in the guide apparatus.
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