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旋转设备的转子中心线应当与本身的轴承理想中线相重合,才能保持运转时的平衡;如果大轴中心线有挠曲,必然产生不平衡而振动,严重的甚至不能继续运行。大轴发生弯曲最常见的是动静部件有单侧摩擦(如轴封、轴瓦、汽封等)引起局部发热膨胀,使摩擦更加剧烈,这时局部金属组织受到压挤的应力,如果压应力超出屈伏极限,在冷却以后这部份收缩起来,大轴便会向受摩擦的相反方向弯曲变形,这是残余的永久变形。有时旋转设备转子停
Rotor center line of the rotor should be coincident with the ideal centerline of the bearing itself in order to maintain the balance during operation. If the centerline of the large shaft is flexed, it will inevitably generate imbalance and vibration, and serious or even no continuous operation. The bending of the large shaft is the most common is the static and dynamic components have unilateral friction (such as shaft seals, bushings, glands, etc.) caused by local thermal expansion, so that the friction is more intense, then the local metal tissue by the squeezing stress, if the compressive stress exceeds Yield limit, after cooling this part of the contraction, the big shaft will be subject to friction in the opposite direction of bending deformation, which is the residual permanent deformation. Sometimes rotating equipment rotor stop