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靠背轮找中心,即藉用靠背轮找两条转子的中心。机组的理想中心线,是在运行状态下,其两条(或几条)转子中心线的俯视图为一条直线,而其正视图则为一条平滑曲线;并且其中心线通过通流部分辐向间隙与电气磁场的中心。由于找中心时是冷态,运行时是热态,要使冷态时找的中心达到热态时的理想要求是很不容易的。多数机组找中心采用百分表,藉用靠背轮找中心,都是按相似三角形对应边成比例的原
The back wheel to find the center, that is borrowing the back wheel to find the center of two rotors. The ideal centerline of the unit is a plan view of the centerline of two (or more) rotors in a running state and a smooth curve in front view; and the centerline of the unit is radiated to the gap With the electric magnetic field center. As the center is cold, running is hot, so cold to find the ideal center to reach the hot state is not easy. The majority of units to find the center with a dial indicator, borrow the back wheel to find the center, are similar to the corresponding side of the triangle is proportional to the original