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US 9,169,001 B2Granted
Zonal hydraulic systems and methods
AssigneeEaton Corporation
InventorsNicholas John Hansen, Joseph Matthew Jones, Barry Benaway
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to isolation and reconfiguration schemes, architectures and methods for use in aircraft hydraulic systems. The main hydraulic system of each hydraulic section of the aircraft hydraulic system can be isolated from one or more consumers in the event of a leak without the use pressure from the backup system. Further, in some embodiments, the main hydraulic system of each hydraulic section of the aircraft hydraulic system can be isolated from one or more consumers in the event of a leak without the use pressure from the backup system and the main system.
Claims32
An isolation valve arrangement, comprising:
- a main port;
- a main return port;
- a backup port;
- a backup return port;
- a consumer port;
- a consumer return port;
- a first main fluid flow path for a main system that extends from the main port to the consumer port;
- a second main fluid flow path for the main system that extends from the consumer return port to the main return port;
- a first backup fluid flow path for a backup system that extends from the backup port to the consumer port;
- a second backup fluid flow path for the backup system that extends from the consumer return port to the backup return port;
- a first pilot operated shutoff valve located on the first main fluid flow path between the main port and the consumer port that in a first position provides fluid communication between the main port and the consumer port and in a second position prevents fluid communication between the main port to the consumer port;
- a first pilot port connected to the first pilot operated shutoff valve;
- a second pilot operated shutoff valve located on the second main fluid flow path between the consumer return port and the main return port that in a first position provides fluid communication between the consumer return port and the main return port and in a second position prevents fluid communication between the consumer return port and the main return port;
- a second pilot port connected to the second pilot operated shutoff valve;
- and
- a pilot flow path that extends from the main port to the first and the second pilot ports of the first and second pilot operated shut off valves;
- and
- a first solenoid valve located on the pilot flow path between the main port and the first and the second pilot ports of the first and the second pilot operated shutoff valves that in a first position provides fluid communication between the main port and the first and the second pilot ports and in a second position prevents fluid communication between the main port and the first and the second pilot ports,
- wherein the main system is isolated from a consumer without requiring backup pressure from the backup system.
16 more elements
A zonal hydraulic system comprising:
- a power source;
- a main port;
- a main return port;
- a backup port;
- a backup return port;
- a consumer port;
- a consumer return port;
- a first circuit for a main system that extends from the main port to the consumer port through a consumer and back from the consumer return port to the main return port;
- a main pump connected to the main port and the main return port, the main pump is configured to pump main fluid through the main port and to receive the main fluid returned through the main return port;
- a second circuit for a backup system that extends from the backup port to the consumer port through the consumer and back from the consumer return port to the backup return port;
- a backup pump connected to the backup port and the backup return port, the backup pump is configured to pump backup fluid through the backup port and to receive the backup fluid returned through the backup return port;
- a first pilot operated shutoff valve located on the first circuit between the main port and the consumer port that in a first position provides fluid communication between the main port and the consumer port and in a second position prevents fluid communication between the main port and the consumer port;
- a first pilot port connected to the first pilot operated shutoff valve;
- a second pilot operated shutoff valve located on the first circuit between the consumer return port and the main return port that in a first position provides fluid communication between the consumer return port and the main return port and in a second position prevents fluid communication between the consumer return port and the main return port;
- a second pilot port connected to the second pilot operated shutoff valve;
- and
- a pilot flow path that extends from the main port to the first and the second pilot ports of the first and second pilot operated shut off valves;
- a first solenoid valve connected to an electrical power source and located on the pilot flow path between the main port and the first and the second pilot ports of the first and the second pilot operated shutoff valves that in a first position provides fluid communication between the main port and the first and the second pilot ports and in a second position prevents fluid communication between the main port and the first and the second pilot ports,
- wherein the first circuit is isolated from the consumer without requiring utilization of the backup fluid.
16 more elements
Dependencies are inferred from the claim text.