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1. WO2007109379 - PROCÉDÉ ET SYSTÈME DE COORDINATION D'UN MULTIPLICATEUR DE PRESSION ET DE LITS DE TAMIS

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

CLAIMS
What is claimed is:
1. A method comprising coordinating control of an intensifier with cycles of a sieve bed fluidly coupled to the intensifier such that there is at least one low pressure stroke of the intensifier and at least one high pressure stroke of the intensifier during a fill cycle of the sieve bed.
2. The method as defined in claim 1 further comprising coordinating control of the intensifier such that there is at least one low pressure stroke and at least one high pressure stroke during a purge cycle of the sieve bed.
3. The method as defined in claim 1 further comprising:
monitoring the pressure of a high pressure gas stream created by the intensifier; and
adjusting a time for the high pressure stroke of the intensifier based on the pressure of the high pressure gas stream.
4. The method as defined in claim 3 wherein adjusting further comprises lengthening the time for the high pressure stroke directly proportional to pressure of the high pressure gas stream.
5. The method as defined in claim 3 further comprising adjusting a time for the fill cycle of the sieve bed based on the pressure of the high pressure gas stream.
6. The method as defined in claim 5 wherein adjusting further comprises lengthening the time for the high pressure stroke and lengthening the time for the fill cycle directly proportional to increasing pressure of the high pressure gas stream.

7. The method as defined in claim 1 wherein coordinating further comprises coordinating control of an intensifier such that there are three substantially complete strokes of the intensifier, two low pressure strokes and one high pressure stroke, during the fill cycle of the sieve bed.
8. The method as defined in claim 7 wherein coordinating further comprises coordinating control of an intensifier such that there are three substantially complete strokes of the intensifier, two high pressure strokes and one low pressure stroke, during a purge cycle of the sieve bed.
9. The method as defined in claim 1 wherein coordinating further comprises coordinating control of an intensifier such that there are three substantially complete strokes of the intensifier, two high pressure strokes and one low pressure stroke, during the fill cycle of the sieve bed.

10. The method as defined in claim 1 further comprising producing with the sieve bed and the intensifier a cylinder fill gas stream at or greater than 2 liters per minute when a cylinder pressure is less than approximately 1200 PSI, and producing between approximately 1.75 and 2 liters per minute when the cylinder pressure is above approximately 1200 PSI.
11. A system comprising:
a compressor;
a first sieve bed and a second sieve bed which selectively fluidly couple to the compressor, wherein the first sieve bed produces an enriched gas stream while the second sieve bed purges, and the second sieve bed produces the enriched gas stream while the first sieve bed purges; and an intensifier with a motive portion and a compressive portion, the motive portion fluidly coupled to the compressor and the compressive portion fluidly coupled to the enriched gas stream, wherein the motive portion has a low pressure stroke and a high pressure stroke;
wherein the intensifier is coordinated to begin at least a low pressure stroke and a high pressure stroke while the first sieve bed produces the enriched gas stream, and at least a low pressure stroke and a high pressure stroke while the second sieve bed produces the enriched gas stream. 12. The system as defined in claim 11 further comprising:
a first valve arrangement coupled between the compressor and the first and second sieve beds, wherein the first valve arrangement selectively:
fluidly couples the first sieve bed to the compressor and purges the second sieve bed; and then fluidly couples the second sieve bed to the compressor and purges the first sieve bed; and
a second valve arrangement coupled between the compressor and intensifier motive portion, wherein the second valve arrangement activates the low pressure stroke and then the high pressure stroke.
13. The system as defined in claim 12 further comprising:
a processor electrically coupled to the first and second valve arrangements;
a pressure transducer fluidly coupled to a cylinder fill gas stream created by the intensifier;
wherein the processor sets a time for the high pressure stroke of the intensifier based the pressure of the cylinder fill gas stream.

14. The system as defined in claim 13 wherein the processor extends the time when the pressure of the cylinder fill gas stream is above a predetermined threshold.

15. The system as defined in claim 13 wherein the processor shortens the time when the pressure of the cylinder fill gas stream is below a predetermined threshold. 16. The system as defined in claim 13 wherein the processor sets the time to be proportional to the pressure of the cylinder fill gas stream.
17. The system as defined in claim 11 further comprising:
wherein the intensifier is coordinated to activate a low pressure stroke, then a high pressure stroke, and then another low pressure stroke while the first sieve bed produces the enriched gas stream and the second sieve bed purges; and
wherein the intensifier is coordinated to activate a high pressure stroke, then a low pressure stroke, and then another high pressure stroke while the second sieve bed produces the enriched gas stream and the first sieve bed purges.
18. The system as defined in claim 11 wherein the intensifier produces a cylinder fill gas stream at or greater than 2 liters per minute when a pressure of a cylinder being filled is less than 1200 PSI, and produces between 1.75 and 2 liters per minute when the pressure is greater than 1200 PSI.
19. A system comprising:
a means for compressing atmospheric air;
a first and second means for separating nitrogen from air to create an enriched gas stream, the first and second means for separating fluidly coupled to the means for compressing, wherein the first means for separating produces an enriched gas stream while the second means for separating purges, and the second means for separating produces the enriched gas stream while the first means for separating purges; and a means for increasing pressure of the enriched gas stream in at least two stages comprising a low pressure stroke and a high pressure stroke, the means for increasing fluidly coupled to the enriched gas stream, and also coupled to the means for compressing;
wherein the means for increasing is coordinated to activate at least a low pressure stroke and a high pressure stroke while the first means for separating the enriched gas stream, and at least a low pressure stroke and a high pressure stroke while the second means for separating produces the enriched gas stream.
20. The system as defined in claim 19 further comprising:
a means controlling airflow into and purge of the means for separating, the means for controlling airflow flu idly coupled to the means for compressing;
a means for controlling drive air to the means for increasing pressure, the means for controlling driver air fluidly coupled to the means for compressing;
a means for executing programs and instructions electrically coupled to the means for controlling airflow and the means for controlling drive air; and a means for sensing pressure of a cylinder fill gas stream created by the means for increasing;
wherein the means for executing sets a time for the high pressure stroke of the mans for increasing based the pressure of the cylinder fill gas stream.