| 摘要 |
<p>The turbine has an impeller hub with two halves, which are coupled with each other by a differential gear wheel fastened to a control rod in a rotatable manner. The halves of the impeller hub are coupled with each other so that an axial adjustment of the control rod leads to axial adjustment of the both the halves in an opposite direction. A spring disk (3.1) is mounted at the halves of the impeller hub and an axis of the differential gear wheel so that a pitch of helical blade leafs is adjusted by the axial adjustment of the control rod.</p> |
