公开(公告)号：US09671792B2

公开(公告)日：2017-06-06

申请号：US14250706

申请日：2014-04-11

Applicant: ALSTOM Technology Ltd

Inventor： Felix Staehli ,  Axel Haerms ,  Dirk Matthes

IPC: G05D3/00 ,  F01D25/36

CPC classification number: G05D3/00 ,  F01D25/36

Abstract: A method for positioning a rotor of a gas turbine automatically is provided that includes gathering data with a control unit, and processing this data to bring the rotor to a desired position which is set according a Human Machine Interface (HMI). The indication of the lay of the rotor to the control unit is done by a key phasor, which includes a sensor which gets a digital pulse for each revolution of a phasor cam wheel. This digital pulse is used to give the information of the lay of the rotor to the control unit.

公开(公告)号：US09683461B2

公开(公告)日：2017-06-20

申请号：US14254971

申请日：2014-04-17

Applicant: ALSTOM Technology Ltd

Inventor： Felix Staehli ,  Axel Haerms ,  Dirk Matthes

IPC: F01D15/12 ,  F01D25/36

CPC classification number: F01D25/36 ,  Y10T74/18056

Abstract: A device for positioning the rotor of a gas turbine by linearly actuating a piston rod that actuates on its end a ratched wheel that moves the rotor of the gas turbine. The device includes an eccentric wheel and a synchronous motor. The piston rod is moved through the eccentric wheel, which is connected to the synchronous motor. The device also includes an incremental counter controlling the angular position of the synchronous motor. The device can permit accurate positioning of the rotor for boroscopic inspection.

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。