Method for controlling coupling of shafts between a first machine and a second machine using rotation speeds and angles
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02C-007/36
F01K-023/10
F01K-023/16
출원번호
US-0010669
(2013-08-27)
등록번호
US-9752509
(2017-09-05)
발명자
/ 주소
Clayton, Peter Jon
Hurley, Joseph David
Sismour, Jr., Albert C.
Batis-Carver, Melissa A.
출원인 / 주소
SIEMENS ENERGY, INC.
인용정보
피인용 횟수 :
0인용 특허 :
7
초록▼
A method for controlling coupling between a first machine including a first rotating shaft having an associated first positional phase angle defined by a first shaft indicia and a second machine including a second rotating shaft having an associated second positional phase angle defined by a second
A method for controlling coupling between a first machine including a first rotating shaft having an associated first positional phase angle defined by a first shaft indicia and a second machine including a second rotating shaft having an associated second positional phase angle defined by a second shaft indicia. A rotational speed and rotational angle of the first shaft are monitored, and rotation of the second shaft is controlled by bringing the second shaft to a predetermined rotational speed relative to the first shaft speed. Acceleration of the second shaft is controlled such that the second shaft indicia is within a predetermined angle relative to the first shaft indicia upon the second shaft being brought to the predetermined rotational speed, at which point the first and second shafts are coupled such that the second shaft indicia is within the predetermined angle relative to the first shaft indicia.
대표청구항▼
1. A method for controlling coupling between a first machine and a second machine, the first machine including a first rotating shaft having a first shaft indicia and the second machine including a second rotating shaft having a second shaft indicia, the method comprising: monitoring a rotational sp
1. A method for controlling coupling between a first machine and a second machine, the first machine including a first rotating shaft having a first shaft indicia and the second machine including a second rotating shaft having a second shaft indicia, the method comprising: monitoring a rotational speed and rotational angle of the first shaft;controlling rotation of the second shaft comprising:determining a first positional phase angle of the first rotating shaft,determining a second positional phase angle of the second rotating shaft,determining a relative phase angle between the first positional phase angle and the second positional phase angle,controlling the rotational speed of the first shaft constantly at a synchronous speed,accelerating the second shaft to a predetermined rotational speed relative to the synchronous speed of the first shaft,reducing the acceleration of the second shaft when a rotational speed of the second shaft is approaching the synchronous speed so that the second positional phase angle is slowly changing,waiting until the second positional phase angle is within a predetermined relative phase angle to the first positional phase angle, andcoupling the first and second shafts at the same time when the second shaft is brought to the predetermined rotational speed and the second positional phase angle is within the predetermined relative phase angle,wherein the first positional phase angle of the first shaft is determined by a first once per revolution sensor sensing a position of the first shaft indicia at each rotation of the first shaft, andwherein the second positional phase angle of the second shaft is determined by a second once per revolution sensor sensing a position of the second shaft indicia at each rotation of the second shaft. 2. The method of claim 1, wherein the first machine is a gas turbine and the second machine is a steam turbine. 3. The method of claim 2, wherein exhaust gases from gas turbine are used to power the steam turbine to effect rotation of the second shaft. 4. The method of claim 1, wherein, during the step of controlling rotation of the second shaft, the first shaft rotates at a substantially constant speed and the speed of the second shaft is increased. 5. The method of claim 1, wherein the predetermined rotational speed comprises a normal operating speed of the first shaft. 6. The method of claim 1, wherein the first and second shaft indicia each comprise one of a notch and a tooth. 7. The method of claim 1, wherein the first and second shafts are coupled together at the predetermined relative phase angle to effect a reduction in vibration in the first and second machines. 8. The method of claim 7, wherein vibrational vectors of the first and second shafts offset each other when coupled together to effect a substantially balanced combined shaft. 9. A method for controlling coupling between a gas turbine and a steam turbine in a combined cycle power plant, the gas turbine including a first rotating shaft having a first shaft indicia and the steam turbine including a second rotating shaft having a second shaft indicia, the method comprising: monitoring a rotational speed and rotational angle of the first shaft;controlling rotation of the second shaft comprising:determining a first positional phase angle of the first rotating shaft,determining a second positional phase angle of the second rotating shaft,determining a relative phase angle between the first positional phase angle and the second positional phase angle,controlling the rotational speed of the first shaft constantly at a synchronous speed,accelerating the second shaft to a predetermined rotational speed relative to the synchronous speed of the first shaft,reducing the acceleration of the second shaft when a rotational speed of the second shaft is approaching the synchronous speed so that the second positional phase angle is slowly changing,waiting until the second positional phase angle is at a predetermined relative phase angle to the first positional phase angle, andcoupling the first and second shafts at the same time when the second shaft is brought to the predetermined rotational speed and the second positional phase angle is at the predetermined relative phase angle,wherein a position of the first shaft indicia at each rotation of the first shaft is sensed by a first once per revolution sensor to determine the first positional phase angle of the first shaft and a position of the second shaft indicia at each rotation of the second shaft is sensed by a second once per revolution sensor to determine the second positional phase angle of the second shaft. 10. The method of claim 9, wherein exhaust gases from gas turbine are used to power the steam turbine to effect rotation of the second shaft. 11. The method of claim 9, wherein the predetermined rotational speed comprises a normal operating speed of the first shaft. 12. The method of claim 9, wherein the first and second shaft indicia each comprise one of a notch and a tooth. 13. The method of claim 9, wherein the first and second shafts are coupled together at the predetermined relative phase angle to effect a reduction in vibration in the first and second machines. 14. The method of claim 13, wherein vibrational vectors of the first and second shafts offset each other when coupled together to effect a substantially balanced combined shaft.
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이 특허에 인용된 특허 (7)
Meyer-Pittroff Roland (Eckental DEX) Becker Bernard (Mlheim DEX) Finckh Hermann (Nuremberg DEX), Apparatus and method for partial-load operation of a combined gas and steam turbine plant.
Reuther John F. (Penn Hills Township ; Allegheny County PA) Jennings Stephen J. (Radnor Township ; Delaware County PA) Yannone Robert A. (Aldan PA), System for operating multiple gas turbines for coordinated dead load pickup.
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