Liquid delivery system
AssigneeEaton Intelligent Power Limited
InventorSteven Charles RILEY
Life of this patent
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Abstract
A liquid delivery system is configured to pump a liquid (e.g., a cryogenic liquid) without a mechanical pump. The system includes a storage tank to store the liquid at low pressure; a transition tank configured to transition the low pressure liquid to a high pressure gas; and a pumping tank configured to first receive part of the low pressure liquid from the source tank and then to receive the pressurized gas from the transition tank to expel the low pressure liquid from the pumping tank. The liquid delivery system can be used to deliver fuel to an engine (e.g., on an aircraft).
Claims6
A method of pumping a cryogenic liquid through a system including a source tank, a transition tank, a pumping tank, and a dump tank, the method comprising:
- performing an intake stroke including:
- closing an outlet of the pumping tank;
- opening a first valve arrangement to connect the source tank to the pumping tank while the source tank has a higher internal pressure than the pumping tank;
- closing a second valve arrangement to disconnect the transition tank and the pumping tank;
- opening a third valve arrangement to connect the pumping tank and the dump tank, wherein the dump tank has a lower internal pressure than the pumping tank;
- and
- performing a discharge stroke after performing the intake stroke, the discharge stroke including:
- closing the first valve arrangement to disconnect the source tank and the pumping tank;
- opening the second valve arrangement to connect the transition tank and the pumping tank;
- and
- closing the third valve arrangement to disconnect the pumping tank and the dump tank.
Dependencies are inferred from the claim text.