We claim:
1. A steam generator system comprising:
a vessel having a steam outlet, recirculation inlet, and a recirculation outlet;
an amount of working fluid capable of forming steam;
recirculation means for transporting the working fluid throughout the system, wherein the recirculation means is connected to the recirculation inlet and the recirculation outlet;
separation means for separating the steam from the working fluid which is located proximate to the recirculation means; and
at least two processes having individual process fluids associated therewith, wherein each process fluid comes into contact with a heat exchange means for transferring heat energy between each process fluid and the working fluid in order to generate steam from the working fluid, wherein each process fluid is contained in a separate stream, and wherein the process fluids are also separated from the working fluid.
2. A steam generator system as set forth in claim 1, wherein the separation means comprises a steam drum located outside of the vessel.
3. A steam generator system as set forth in claim 1, wherein at least a portion of the heat exchange means are located inside of the vessel and further comprising at least one baffle located inside the vessel wherein the baffle is positioned to direct the working fluid across the heat exchange means to facilitate the generation of steam.
4. A steam generator system as set forth in claim 3, wherein the heat exchange means comprises a U-tube.
5. A steam generator system as set forth in claim 4, wherein there are a plurality of U-tubes and wherein each U-tube has a diameter selected to optimize heat transfer between the process fluids and the working fluid.
6. A steam generator system as set forth in claim 2, wherein at least a portion of the heat exchange means are located inside of the vessel and further comprising at least one baffle located inside the vessel wherein the baffle is positioned to direct the working fluid across the heat exchange means to facilitate the generation of steam.
7. A steam generator system as set forth in claim 6, wherein at least one of the heat exchange means comprises a U-tube.
8. A steam generator system as set forth in claim 7, wherein there are a plurality of U-tubes and wherein each U-tube has a diameter selected to optimize heat transfer between the process fluids and the working fluid.
9. A steam generator system as set forth in claim 1, further comprising control means for selectively controlling the working fluid which contacts the heat exchange means in order to maintain control over at least one of: the steam generated by the working fluid and at least one of the processes associated with one of the process fluids.
10. A steam generator system as set forth in claim 2, further comprising control means for selectively controlling the working fluid which contacts the heat exchange means in order to maintain control over at least one of: the steam generated by the working fluid and at least one of the processes associated with one of the process fluids.
11. A steam generator system as set forth in claim 5, further comprising control means for selectively controlling the working fluid which contacts the heat exchange means in order to maintain control over at least one of: the steam generated by the working fluid and at least one of the processes associated with one of the process fluids.
12. A steam generator system as set forth in claim 8, further comprising control means for selectively controlling the working fluid which contacts the heat exchange means in order to maintain control over at least one of: the steam generated by the working fluid and at least one of the processes associated with one of the process fluids.
13. A steam generator system as set forth in claim 1, wherein the heat exchange means includes at least one of the following: a straight tube, a plate-type heat exchange surface having a common boiling fluid stream, a U-tube, a helical tube, or a curved tube.
14. A steam generator system as set forth in claim 13, wherein there are a plurality of U-tubes and wherein each U-tube has a diameter selected to optimize the heat removal requirements of each heat exchanger.
15. A steam generator system as set forth in claim 2, wherein the heat exchange means includes at least one of the following: a straight tube, a plate-type heat exchange surface having a common boiling fluid stream, a U-tube, a helical tube, or a curved tube.
16. A steam generator system as set forth in claim 5, wherein the heat exchange means includes at least one of the following: a straight tube, a plate-type heat exchange surface having a common boiling fluid stream, a U-tube, a helical tube, or a curved tube.
17. A steam generator system as set forth in claim 8, wherein the heat exchange means includes at least one of the following: a straight tube, a plate-type heat exchange surface having a common boiling fluid stream, a U-tube, a helical tube, or a curved tube.
18. A steam generator system as set forth in claim 9, wherein the heat exchange means includes at least one of the following: a straight tube, a plate-type heat exchange surface having a common boiling fluid stream, a U-tube, a helical tube, or a curved tube.
19. A steam generator system as set forth in claim 10, wherein the heat exchange means includes at least one of the following: a straight tube, a plate-type heat exchange surface having a common boiling fluid stream, a U-tube, a helical tube, or a curved tube.
20. A steam generator system as set forth in claim 11, wherein the heat exchange means includes at least one of the following: a straight tube, a plate-type heat exchange surface having a common boiling fluid stream, a U-tube, a helical tube, or a curved tube.
21. A steam generator system as set forth in claim 12, wherein the heat exchange means includes at least one of the following: a straight tube, a plate-type heat exchange surface having a common boiling fluid stream, a U-tube, a helical tube, or a curved tube.
22. A steam generator system as set forth in claim 9, wherein the control means includes at least one of the following: pressure control means for controlling the pressure of the working fluid within the recirculation means, bypass means for diverting a portion of the working fluid away from the heat exchange means prior to the heat transfer, a pump, and a valve.
23. A steam generator system as set forth in claim 10, wherein the control means includes at least one of the following: pressure control means for controlling the pressure of the working fluid within the recirculation means, bypass means for diverting a portion of the working fluid away from the heat exchange means prior to the heat transfer, a pump, and a valve.
24. A steam generator system as set forth in claim 11, wherein the control means includes at least one of the following: pressure control means for controlling the pressure of the working fluid within the recirculation means, bypass means for diverting a portion of the working fluid away from the heat exchange means prior to the heat transfer, a pump, and a valve.
25. A steam generator system as set forth in claim 12, wherein the control means includes at least one of the following: pressure control means for controlling the pressure of the working fluid within the recirculation means, bypass means for diverting a portion of the working fluid away from the heat exchange means prior to the heat transfer, a pump, and a valve.
26. A steam generator system as set forth in claim 18, wherein the control means includes at least one of the following: pressure control means for controlling the pressure of the working fluid within the recirculation means, bypass means for diverting a portion of the working fluid away from the heat exchange means prior to the heat transfer, a pump, and a valve.
27. A steam generator system as set forth in claim 19, wherein the control means includes at least one of the following: pressure control means for controlling the pressure of the working fluid within the recirculation means, bypass means for diverting a portion of the working fluid away from the heat exchange means prior to the heat transfer, a pump, and a valve.
28. A steam generator system as set forth in claim 20, wherein the control means includes at least one of the following: pressure control means for controlling the pressure of the working fluid within the recirculation means, bypass means for diverting a portion of the working fluid away from the heat exchange means prior to the heat transfer, a pump, and a valve.
29. A steam generator system as set forth in claim 21, wherein the control means includes at least one of the following: pressure control means for controlling the pressure of the working fluid within the recirculation means, bypass means for diverting a portion of the working fluid away from the heat exchange means prior to the heat transfer, a pump, and a valve.
30. A steam generator system as set forth in claim 1, wherein the amount of working fluid remains essentially constant and wherein the working fluid is naturally recirculated throughout the system.
31. A steam generator system as set forth in claim 1, wherein there are at least four processes and wherein the processes are part of a fuel processor system which produces hydrogen rich gas.
32. A steam generator system as set forth in claim 1, wherein the steam generated by the system is subsequently provided to at least one of: a fuel cell system and a fuel processor system which produces hydrogen rich gas.
33. A steam generator system as set forth in claim 1, wherein the working fluid consists essentially of water.
34. A steam generator system comprising:
a vessel having a steam outlet, a plurality of recirculation inlets, and a plurality of recirculation outlets;
an amount of a working fluid capable of forming steam;
recirculation means for transporting the working fluid, wherein the recirculation means includes separate streams connected to one of the recirculation inlets and one of the recirculation outlets;
at least one separation means for separating the steam from the working fluid which is located proximate to the recirculation means;
at least two processes having individual process fluids associated therewith, wherein each process fluid comes into contact with a series of individual heat exchange means for transferring heat energy between each process fluid and the working fluid, wherein each individual heat exchange means which is connected to the recirculation means, wherein each process fluid is contained in a separate stream, wherein the process fluids are also separated from the working fluid, and wherein steam is generated from the working fluid by each individual heat exchange means.
35. A steam generator system as set forth in claim 34, wherein the amount of working fluid remains essentially constant and wherein the working fluid is naturally recirculated throughout the system.
36. A steam generator system as set forth in claim 34, wherein there are at least four processes and wherein the processes are part of a fuel processor system which produces hydrogen rich gas.
37. A steam generator system as set forth in claim 34, wherein the steam generated by the system is subsequently provided to at least one of: a fuel cell system and a fuel processor system which produces hydrogen rich gas.
38. A steam generator system as set forth in claim 34, wherein the working fluid consists essentially of water.
39. A steam generator system as set forth in claim 34, wherein at least one of the individual heat exchange means includes at least one of the following: a straight tube, a plate-type heat exchange surface having a common boiling fluid stream, a U-tube, a helical tube, or a curved tube.
40. A steam generator system as set forth in claim 39, wherein there are a plurality of U-tubes and wherein each U-tube has a diameter selected to optimize the heat removal requirements of each heat exchanger.
41. A steam generator system as set forth in claim 34, further comprising control means for selectively controlling the working fluid which contacts at least one of the individual heat exchange means in order to maintain control over at least one of: the steam generated by the working fluid and at least one of the processes associated with one of the process fluids.
42. A steam generator system as set forth in claim 41, wherein the control means includes at least one of the following: pressure control means for controlling the pressure of the working fluid within the recirculation means, bypass means for diverting a portion of the working fluid away from at least one of the individual heat exchange means prior to the heat transfer, a pump, and a valve.
43. A steam generator system as set forth in claim 34, wherein the separation means comprises a steam drum located outside of the vessel.
44. A steam generator system as set forth in claim 34, wherein at least a portion of at least one of the heat exchange means is located inside of the vessel and further comprising at least one baffle also located inside the vessel wherein the baffle is positioned to direct the working fluid across the heat exchange means to facilitate the generation of steam.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for scheduling a data flow, comprising:
marking, by a network side device, in a priority marking field in a downlink data packet sent to a user equipment (UE), a priority of a subsequent uplink andor downlink data flow of the UE corresponding to the downlink data packet; and
sending the downlink data packet, so that a downstream node schedules an access network resource or air interface resource for the subsequent uplink andor downlink data flow according to the priority;
wherein the method further comprising:
receiving at least one data packet, or a data packet of a period of time, obtaining a service type or service content of the data packet when receiving the data packet, and predicting the priority of the subsequent uplink andor downlink data flow according to the service type or the service content of the data packet; or setting the priority of the subsequent uplink andor downlink data flow according to a network or operator policy;
wherein the predicting the priority of the subsequent uplink andor downlink data flow according to the service type or the service content of the data packet comprises at least one of the following:
when receiving one data packet, searching for a priority of the data packet according to correspondence between a service type or service content and a priority and taking the priority of the data packet as the priority of the subsequent uplink andor downlink data flow;
when receiving at least two data packets, searching for a priority of the at least two data packets according to correspondence between a service type or service content and a priority, and taking a statistical value of the priority of the at least two data packets as the priority of the subsequent uplink andor downlink data flow;
when receiving a data packet of a period of time, searching for a priority of the data packet of a period of time according to correspondence between a service type or service content and a priority, and taking a statistical value of the priority of the data packet of a period of time as the priority of the subsequent uplink andor downlink data flow.
2. The method according to claim 1, wherein
the obtaining a service type of the data packet comprises:
detecting the service type of the data packet by deep packet inspection; or
obtaining an IP address andor a port of a receiving end of an uplink data packet or a sending end of a downlink data packet by shallow packet inspection, and obtaining a service type corresponding to the IP address andor the port of the receiving end of the uplink data packet or the sending end of the downlink data packet according to set correspondence between an IP address andor port and a service type;
or
the obtaining service content of the data packet comprises:
detecting the service content of the data packet by deep packet inspection.
3. The method according to claim 1, wherein the priority marking field comprises:
a differentiated services code point (DSCP), type of service (TOS), a traffic class Traffic Class, a flow label Flow Label or a field of a GPRS tunneling protocol for bearing the data packet;
andor
one part of the priority marking field is used to mark a priority of a subsequent downlink data flow, and the other part is used to mark a priority of a subsequent uplink data flow, or
one part of the priority marking field is used to mark the priority of the subsequent downlink data flow or the priority of the subsequent uplink data flow, and the other part is used to mark an uplink or a downlink.
4. The method according to claim 1, further comprising:
adjusting the priority of the subsequent uplink andor downlink data flow according to a subscription type of the UE.
5. The method according to claim 1, wherein the downstream node comprises:
a base station, a radio network controller (RNC), a radio access network device, or a fixed network device.
6. A device for scheduling a data flow, comprising:
a processor and a non-transitory processor-readable medium having processor-executable instructions stored thereon, the processor-executable instructions including a marking module, configured to mark, in a priority marking field in a downlink data packet sent to a user equipment (UE), a priority of a subsequent uplink andor downlink data flow of the UE corresponding to the downlink data packet;
a sending module, configured to send the downlink data packet, so that a downstream node schedules an access network resource or air interface resource for the subsequent uplink andor downlink data flow according to the priority; and
a receiving module, configured to receive at least one data packet, or a data packet of a period of time, obtain a service type or service content of the data packet when receiving the data packet, and predict a priority of a subsequent uplink andor downlink data flow according to the service type or the service content of the data packet; or a setting module, configured to set the priority of the subsequent uplink andor downlink data flow according to a network or operator policy;
wherein the device is configured to:
when receiving one data packet, search for a priority of the data packet according to correspondence between a service type or service content and a priority and taking the priority of the data packet as the priority of the subsequent uplink andor downlink data flow;
when receiving at least two data packets, search for a priority of the at least two data packets according to correspondence between a service type or service content and a priority, and take a statistical value of the priority of the at least two data packets as the priority of the subsequent uplink andor downlink data flow;
when receiving a data packet of a period of time, search for a priority of the data packet of a period of time according to correspondence between a service type or service content and a priority, and take a statistical value of the priority of the data packet of a period of time as the priority of the subsequent uplink andor downlink data flow.
7. The device according to claim 6, wherein
the device is configured to:
detect the service type of the data packet by deep packet inspection; or
obtain an IP address andor a port of a receiving end of an uplink data packet or a sending end of a downlink data packet by shallow packet inspection, and obtain a service type corresponding to the IP address andor the port of the receiving end of the uplink data packet or the sending end of the downlink data packet according to a set correspondence between an IP address andor port and a service type;
or
the device is configured to:
detect the service content of the data packet by deep packet inspection.
8. The device according to claim 6, wherein the priority marking field comprises:
a differentiated services code point (DSCP), type of service (TOS), a traffic class Traffic Class, a flow label Flow Label or a field of a GPRS tunneling protocol for bearing the data packet;
andor
one part of the priority marking field is used to mark a priority of a subsequent downlink data flow, and the other part is used to mark a priority of a subsequent uplink data flow, or
one part of the priority marking field is used to mark the priority of the subsequent downlink data flow or the priority of the subsequent uplink data flow, and the other part is used to mark an uplink or a downlink.
9. The device according to claim 6, further comprising:
an adjusting module, configured to adjust the priority of the subsequent uplink andor downlink data flow according to a subscription type of the UE.
10. The device according to claim 6, wherein the downstream node comprises:
a base station, a radio network controller (RNC), a radio access network device, or a fixed network device.