Control system for an egr purge system
AssigneeGeneral Electric Company
InventorsRahul J. Chillar, Joell R. Hibshman, II, Dale J. Davis, Douglas E. Dean
Life of this patent
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Abstract
The exhaust within an exhaust gas recirculation (EGR) system should be purged to allow for access to the components of the EGR system. A method and system for controlling an EGR purge system is provided. The method and system may control the operation of drawing the exhaust out of the EGR system. The method may also control the operation of diving the exhaust out of the EGR system.
Claims20
A method of purging an exhaust stream from at least one exhaust gas recirculation (EGR) system, wherein the exhaust stream exits a turbomachine;
- the method comprising:
- providing at least one EGR system comprising:
- a first zone, a second zone;
- an EGR skid, an EGR inlet damper, and an EGR outlet damper;
- wherein the at least one EGR system reduces the level of at least one constituent within the exhaust stream;
- providing an EGR purge system for purging the exhaust stream from the EGR system, the EGR purge system comprising:
- at least one first purge flow modulation device located within the first zone, and at least one second purge flow modulation device located within the second zone;
- establishing a pressure differential between the first zone and second zone:
- modulating at least one of the at least one first purge flow modulation device and the at least one second purge flow modulation device to allow for the exhaust stream exit the at least one EGR system;
- and
- determining whether the exhaust stream is within a range.
A system for purging an exhaust stream from at least one exhaust gas recirculation (EGR) system, wherein the exhaust stream exits a turbomachine;
- the system comprising:
- at least one EGR system comprising:
- a first zone, a second zone;
- an EGR skid,
- an EGR inlet damper, and an EGR outlet damper;
- wherein the at least one EGR system reduces the level of at least one constituent within the exhaust stream;
- an EGR purge system for purging the exhaust stream from the EGR system, the EGR purge system comprising:
- at least one first purge flow modulation device located within the first zone, and at least one second purge flow modulation device located within the second zone;
- a control system, wherein the control system comprises at least one processor, wherein the at least one processor operates the EGR purge system to:
- establish a pressure differential between the first zone and second zone;
- modulate at least one of the at least one first purge flow modulation device and the at least one second purge flow modulation device to allow for the exhaust stream exit the at least one EGR system;
- and
- determine whether the exhaust stream is within a range.
Dependencies are inferred from the claim text.