公开(公告)号：US20140199157A1

公开(公告)日：2014-07-17

申请号：US14156028

申请日：2014-01-15

Applicant: ALSTOM Technology Ltd

Inventor： Axel HAERMS ,  Felix Staehli ,  Marc Rauch ,  Eric Knopf

IPC: F01D25/36

CPC classification number: F01D25/36 ,  F01D21/06 ,  F01D25/34 ,  F05D2260/4031 ,  F05D2270/304

Abstract: A method for barring a rotor of a thermally loaded turbomachine includes stopping normal operation of the turbomachine; providing a barring device for rotating the rotor about a machine axis; coupling the barring device to the rotor; letting the rotor cool down during cool down of the rotor rotating the rotor by means of the barring device. A damage of the machine due to thermally induced buckling during the barring process is avoided by consecutively determining the force or torque applied to the rotor by the barring device for rotating the rotor and/or the circumferential speed of the rotor during barring. The rotation of the rotor is controlled by means of the barring device in dependence of the determined force or torque and/or circumferential speed in order to reduce a bending or imbalance of the rotor, which is due to a nonuniform temperature distribution on the rotor during cool down.

Abstract translation: 一种用于禁止热负荷涡轮机的转子的方法包括停止涡轮机的正常操作; 提供用于围绕机器轴线旋转转子的阻止装置; 将所述制动装置连接到转子上; 使转子在转子冷却期间冷却，转子通过限制装置转动转子。 通过在限制过程中连续确定用于旋转转子的旋转装置和/或转子的圆周速度施加到转子的力或扭矩，可以避免在限制过程中由于热诱导的弯曲引起的机械损坏。 根据确定的力或扭矩和/或圆周速度，转子的旋转通过限制装置进行控制，以减少转子的弯曲或不平衡，这是由于转子上的不均匀的温度分布 冷却。