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US 10,094,298 B2Granted
Ecology system ejector pump shutoff valve
AssigneeHamilton Sunstrand Corporation
InventorsErick Ramos, Kevin Gibbons, Lubomir A. Ribarov, Leo J. Veilleux, Jr., James S. Elder, Richard J. Carpenter, Sushant S. Bhadange
Life of this patent
Estimating the term…
Abstract
An ecology system includes an ecology tank, a check valve, a shutoff valve, and an ejector pump. The check valve is fluidly connected to the ecology tank and is configured to allow flow from the ecology tank. The shutoff valve is fluidly connected to the check valve, and the ejector pump is fluidly connected to the shutoff valve. The ejector pump is configured to draw fuel from the ecology tank when the shutoff valve is in an open configuration.
Claims13
A fuel system comprising:
- a pumping system for pumping fuel from a fuel source, the pumping system including a first pump and a second pump;
- a fuel destination fluidly connected to the pumping system;
- and
- an ecology system fluidly connected to the fuel destination and the pumping system, the ecology system comprising:
- an ecology tank fluidly connected to the fuel destination;
- a shutoff valve fluidly connected to the ecology tank, wherein the shutoff valve is fluidly connected to a first pilot and to a second pilot for controlling the shutoff valve;
- and
- an ejector pump fluidly connected to the shutoff valve and the pumping system.
5 more elements
An aircraft comprising:
- an airframe;
- a wing attached to the airframe;
- a gas turbine engine attached to the wing, the gas turbine engine including a combustor with a fuel nozzle;
- a main fuel tank attached to the wing;
- a pumping system for pumping fuel from the main fuel tank, the pumping system including a first pump and a second pump, wherein the pumping system is fluidly connected to the gas turbine engine to provide fuel to the fuel nozzle;
- and
- an ecology system fluidly connected to the fuel nozzle and the main fuel tank to remove fuel from the fuel nozzle, the ecology system comprising:
- an ecology tank fluidly connected to the fuel nozzle and to a vent to overboard;
- a shutoff valve fluidly connected to the ecology tank and the main fuel tank, the shutoff valve preventing fuel from flowing from the main fuel tank to the vent to overboard when the shutoff valve is in a closed configuration, wherein the shutoff valve is fluidly connected to a first pilot and to a second pilot for controlling the shutoff valve;
- and
- an ejector pump fluidly connected to the shutoff valve and the pumping system.
8 more elements
Dependencies are inferred from the claim text.