Rotation coupling employing torque converter and synchronization motor
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02C-007/36
F02C-007/00
F16H-061/48
F16H-061/38
F16D-033/00
출원번호
US-0226741
(2005-09-14)
등록번호
US-7422543
(2008-09-09)
발명자
/ 주소
Ransbarger,Weldon L.
Martinez,Bobby D.
출원인 / 주소
ConocoPhillips Company
인용정보
피인용 횟수 :
7인용 특허 :
7
초록▼
A system employing a torque converter and a synchronizing motor to start up a large rotational driver/load combination. The torque converter is employed to increase the rotational speed of the load to the maximum speed permitted by the torque converter. The synchronizing motor is then employed to fu
A system employing a torque converter and a synchronizing motor to start up a large rotational driver/load combination. The torque converter is employed to increase the rotational speed of the load to the maximum speed permitted by the torque converter. The synchronizing motor is then employed to further increase the rotational speed of the load to substantially match the rotational speed of the driver.
대표청구항▼
What is claimed is: 1. A method comprising: (a) using a torque convener to cause a drive element to rotate a load element while the drive and load elements are mechanically unlocked so that the rotational speed of said drive element is greater than the rotational speed of said load element; and (b)
What is claimed is: 1. A method comprising: (a) using a torque convener to cause a drive element to rotate a load element while the drive and load elements are mechanically unlocked so that the rotational speed of said drive element is greater than the rotational speed of said load element; and (b) using a synchronization motor connected to said load element and not to said drive element to increase the rotational speed of said load clement to thereby substantially synchronize the rotational speeds of said drive and load elements. 2. The method of claim 1; and (c) while the rotational speeds of said drive and load elements are substantially synchronized, mechanically locking said drive and load elements to one another. 3. The method of claim 1, step (b) being performed simultaneously with step (a). 4. The method of claim 1, step (a) including using said torque converter to increase the rotational speed of said load element. 5. The method of claim 1, said drive element rotating at a first substantially constant speed during steps (a) and (b). 6. A method comprising: (a) using a torque converter to cause a drive element to rotate a load element; and (b) using a motor to substantially synchronize the rotational speeds of said drive and load elements, said drive element rotating at a first substantially constant speed during steps (a) and (b), step (a) including using said torque converter to cause the rotational speed of said load element to increase from at or near zero revolutions per minute (rpm) to a second rotational speed within about 20 percent of said first substantially constant speed, step (b) including using said motor to increase the rotational speed of said drive element to a third rotational speed greater than said second rotational speed and within about 5 percent of said first substantially constant speed. 7. The method of claim 6, said first substantially constant rotational speed being at least about 1,000 rpm. 8. The method of claim 1; and (d) prior to step (a), rotating said drive element without rotating said load element. 9. The method of claim 1, step (a) including using a gas turbine to rotate said drive element. 10. The method of claim 9, said gas turbine being capable of producing power of at least about 2,000 horsepower at a rotational speed of at least about 1,000 rpm. 11. The method of claim 9, said load element being rotationally coupled to a compressor. 12. The method of claim 1, said torque converter being a fluid coupling. 13. A method of starting a compressor powered by a gas turbine, said method comprising: (a) using said gas turbine to rotate a drive shaft without rotating a load shaft that drives said compressor; (b) subsequent to step (a), using a torque converter to transmit torque from said drive shaft to said load shaft, thereby causing rotation of said load shaft so that the rotational speed of said toad shaft is less than the rotational speed of said drive shaft; (c) simultaneously with step (b), using an electric motor to increase the rotational speed of said load shaft until the rotational speeds of said drive and load shafts are substantially synchronized; and (d) while the rotational speeds of said drive and load shafts are substantially synchronized, mechanically locking said drive and load shafts to one another. 14. The method of claim 13, step (a) including increasing the rotational speed of said drive shaft from at or about zero to a first rotational speed of at least about 1,000 revolutions per minute (rpm). 15. A method of starting a compressor powered by a gas turbine, said method comprising: (a) using said gas turbine to rotate a drive shaft without rotating a load shaft that drives said compressor; (b) subsequent to step (a), using a torque converter to transmit torque from said drive shaft to said load shaft, thereby causing rotation of said load shaft; (c) simultaneously with step (b), using an electric motor to increase the rotational speed of said load shaft until the rotational speeds of said drive and load shafts are substantially synchronized; and (d) while the rotational speeds of said drive and load shafts are substantially synchronized, mechanically locking said drive and load shafts to one another, step (a) including increasing the rotational speed of said drive shaft from at or about zero to a first rotational speed of at least about 1,000 revolutions per minute (rpm), step (b) including increasing the rotational speed of said load shaft from at or about zero to a second rotational speed less than said first rotational speed but within about 10 percent of said first rotational speed. 16. The method of claim 15, step (c) including increasing the rotational speed of said load shaft from said second rotational speed to a third rotational speed, said third rotational speed being within about 5 percent of said first rotational speed. 17. The method of claim 16, said third rotational speed being within 1 percent of said first rotational speed. 18. The method of claim 16, said second rotational speed being at least about 5 rpm less than said first rotational speed, said third rotational speed being at least about 5 rpm greater than said second rotational speed. 19. An apparatus comprising: a rotational driver; a rotational load; a drive element rotatable by said driver; a load element for rotating said rotational load; a torque converter for transmitting torque from said drive element to said load element; and a synchronization motor drivingly connected to said load element and not to said drive element and operable to increase the speed of rotation of said load element when used in combination with said torque converter and when the load element is being rotated by the torque convener, said synchronization motor being unable to rotate said load element without torque being transmitted by said torque converter. 20. The apparatus of claim 19, said motor being a variable speed electric motor. 21. The apparatus of claim 19, said motor having a power rating that is less than about 25 percent of the power rating of said driver at design operating conditions of said apparatus. 22. The apparatus of claim 19; and a control system for controlling the rotational speed of said motor. 23. The apparatus of claim 22; and a drive sensor for determining the rotational speed of said drive element; and a load sensor for determining the rotational speed of said load element, said control system providing for adjustment of the rotational speed of said motor based on the rotational speeds of said drive and load elements determined by said drive and load sensors. 24. The apparatus of claim 22, said control system being operable to adjust the rotational speed of said motor until the rotational speeds of said drive and load elements are substantially the same. 25. The apparatus of claim 19; and a mechanical locking device for selectively mechanically coupling said drive and load elements to one another. 26. The apparatus of claim 19, said driver being a gas turbine, said load being a compressor. 27. The apparatus of claim 19, said apparatus being capable of operating in a first mode where said load element is decoupled from said drive element so that said drive element can be rotated without rotating said load element. 28. The apparatus of claim 19, said apparatus being capable of operating in a second mode where said load element is coupled to said drive element by said torque converter so that rotation of said drive element causes rotation of said load element. 29. The apparatus of claim 19, said apparatus being capable of operating in a third mode where said load element is coupled to said drive element by said torque converter and where said motor is drivingly coupled to said load element so that rotation of said load element is cooperatively powered by said driver and said motor. 30. The apparatus of claim 19, said apparatus being capable of operating in a fourth mode where said drive and load elements are mechanically coupled to one another so that said drive and load elements rotate at exactly the same speed.
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