IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0085047
(2006-11-08)
|
| 등록번호 |
US-8517693
(2013-08-27)
|
| 국제출원번호 |
PCT/US2006/043287
(2006-11-08)
|
| §371/§102 date |
20080513
(20080513)
|
| 국제공개번호 |
WO2007/078418
(2007-07-12)
|
|
발명자
/ 주소 |
- Martin, William L.
- Holt, Christopher G.
|
| 출원인 / 주소 |
- ExxonMobil Upstream Research Company
|
| 대리인 / 주소 |
ExxonMobil Upstream Research Co. Law Dept.
|
| 인용정보 |
피인용 횟수 :
1 인용 특허 :
79 |
초록
▼
Starter arrangement for high power rotating equipment strings with multiple compressors driven by a single turbine or motor includes multiple variable fluid drive torque converters (CSTCs) to start the compressors in a pressurized start. The string can use a single CSTC for each compressor or a sing
Starter arrangement for high power rotating equipment strings with multiple compressors driven by a single turbine or motor includes multiple variable fluid drive torque converters (CSTCs) to start the compressors in a pressurized start. The string can use a single CSTC for each compressor or a single CSTC for more than one compressor with at least two CSTCs for a given string. The starting procedure is sequential. After the turbine or motor is started and brought up to speed, successive CSTCs are operated from zero to lock-up speed sequentially to start each compressor or group of compressors in turn. In order to cool the working fluid of the CSTCs, a single heat exchanger is provided and the working fluid of each CSTC in turn is circulated through the heat exchanger as they are sequentially started. At lock-up speed, the CSTC is locked up, the working fluid is drained, and the working fluid of the active CSTC is isolated from the heat exchanger and the next succeeding CSTC in the start sequence is in turn, filled with the working fluid and connected to the heat exchanger. At full start, with all compressors operating at full speed, no working fluid is present in the CSTCs, and no working fluid is circulated through the heat exchangers from the locked-up CSTCs. A single heat exchanger may also be used for multiple strings, each having multiple CSTCs for multiple compressors. The starter arrangement is useful in high compressor load strings for LNG refrigeration service.
대표청구항
▼
1. A method of cooling the working fluid of multiple variable speed hydraulic torque converters in a string of rotating power equipment including a prime mover driving multiple compressors, and multiple variable speed fluid torque converters for starting at least one of said compressors followed by
1. A method of cooling the working fluid of multiple variable speed hydraulic torque converters in a string of rotating power equipment including a prime mover driving multiple compressors, and multiple variable speed fluid torque converters for starting at least one of said compressors followed by other torque converters starting other compressors, in succession, said prime mover being connected to a first variable speed fluid drive torque converter, and said first torque converter being connected to a first compressor, and a second torque converter connected to said first compressor and in turn connected to a second of said compressors, at least a third torque converter connected to said second compressor and in turn connected to a third of said compressors, said torque converters and said compressors being positioned in an in-series configuration, each of said torque converters providing an output from zero to full speed, each of said torque converters including a supply conduit for cooled working fluid, and a discharge conduit for the heated working fluid, said supply conduit and said discharge conduit for each of said torque converters being connected to a single heat exchanger, and including a discharge valve in each of said discharge conduits and a supply valve in each of said supply conduits, wherein each torque converter includes a lock-up mechanism, engaged at full speed, whereby all power is transmitted mechanically and the input and output speed is synchronized, wherein the method comprises: starting the prime mover;opening the supply and discharge valves of said first torque converter while keeping all other valves to said second and third torque converters closed to permit the working fluid to flow through said first converter and said single heat exchanger;starting said first compressor and increasing the speed up to full speed;closing the supply and discharge valves to said first torque converter;opening the supply and discharge valves to said second torque converter while keeping all other valves closed to permit the working fluid to flow through said second torque converter and said single heat exchanger;starting said second compressor and increasing its speed to full speed; andclosing the supply and discharge valves to said second torque converter,opening the supply and discharge valves of said third torque converter while keeping all other valves to said first and second torque converters closed to permit the working fluid to flow through said third converter and said single heat exchanger;starting said third compressor and increasing the speed up to full speed;closing the supply and discharge valves to said third torque converter; whereby each of said torque converters can be successively isolated from said single heat exchanger in turn and each of the torque converters is locked up at full speed, successively, to enable full power transmission mechanically such that working fluid is no longer required. 2. The method according to claim 1, wherein said first and second variable speed hydraulic torque converters have different cooling needs and further comprising: providing a heat exchanger with a capacity to satisfy the greater cooling needs. 3. The method according to claim 1, wherein the heat exchanger is supplied with working fluid from a hot manifold and discharges working fluid to a cold manifold, and wherein the method further comprises: supplying working fluid through said discharge valves to said hot manifold, andsupplying fluid through said supply valves from said cold manifold to each torque converter. 4. The method according to claim 1, further comprising a third and a fourth compressor and third and fourth torque converters, and wherein the method further comprises: opening the supply and discharge valves to said third torque converter while keeping all other valves closed to permit the working fluid to flow through said third torque converter and said single heat exchanger;starting said third compressor and increasing the speed up to full speed;closing the supply and discharge valves to said third torque converter;opening the supply and discharge valves to said fourth torque converter while keeping all other valves closed to permit the working fluid to flow through said fourth torque converter and said single heat exchanger; andstarting said fourth compressor and increasing its speed to full speed. 5. The method according to claim 1, wherein a second string of equipment is provided, said second string including a plurality of variable speed fluid torque converters and a plurality of compressors, and wherein the method comprises: providing the torque converters of said second string with supply and discharge conduits for the working fluid; andconnecting said supply and discharge conduit to said single heat exchanger,whereby said single heat exchanger is usable by more than one string of equipment. 6. The method according to claim 1 wherein said prime mover is a turbine. 7. The method according to claim 6 comprising a starting package having a starting motor and a starting VFD. 8. The method according to claim 6 comprising a starting package having a starting motor and a starting hydraulic clutch. 9. The method according to claim 1 wherein said prime mover is a motor. 10. The method according to claim 9 comprising a starting package having a starting motor and a starting VFD.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.