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US 9,816,643 B2Granted
Dual valve gas pressure equalization system and method
AssigneeThe Boeing Company
InventorKevin Schmidt
Life of this patent
Estimating the term…
Abstract
An aircraft gas transport system including a high pressure gas supply line having a supply valve, and an equilibrium gas line joined at junctions with the high pressure gas supply line upstream and downstream from the supply valve, and in flow communication with the high pressure gas supply line, the equilibrium gas line having an equilibrium valve and a flow restrictor, the equilibrium valve having an exit orifice and the flow restrictor being offset from the exit orifice of the equilibrium valve.
Claims20
An aircraft gas transport system comprising:
- a high pressure gas supply line having a supply valve and being configured to couple an aircraft gas supply to one or more pieces of equipment onboard an aircraft that receive high pressure gas from the aircraft gas supply;
- and
- an equilibrium gas line joined at junctions with the high pressure gas supply line upstream and downstream from the supply valve, and in flow communication with the high pressure gas supply line, the equilibrium gas line having an equilibrium valve and a flow restrictor, the equilibrium valve having an exit orifice and wherein
- the equilibrium valve is disposed within the equilibrium gas line at a predetermined location, and
- the flow restrictor is configured to mitigate adiabatic heating and particle impingement on interior walls of the high pressure gas supply line caused by an inrush of high pressure gas from the aircraft gas supply into the high pressure gas supply line, wherein the flow restrictor is spatially offset from the exit orifice of the equilibrium valve.
2 more elements
An aircraft gas system comprising:
- a high pressure gas supply control system coupled in flow communication with a high pressure gas supply line coupling an aircraft gas supply to one or more pieces of equipment onboard an aircraft that receive high pressure gas from the aircraft gas supply, the gas supply control system including a fast acting supply valve;
- and
- a pressurization control system dependent from the high pressure gas supply line that is coupled in flow communication with an equilibrium gas line, wherein the equilibrium gas line is joined at junctions with the high pressure gas supply line upstream and downstream from the fast acting supply valve, and in flow communication with the high pressure gas supply line, the pressurization control system includes a fast acting equilibrium valve and a flow restrictor, wherein the fast acting equilibrium valve has an exit orifice and wherein
- the fast acting equilibrium valve is disposed within the equilibrium gas line, and
- the flow restrictor is configured to mitigate adiabatic heating and particle impingement on interior walls of the high pressure gas supply line caused by an inrush of high pressure gas from the aircraft gas supply into the high pressure gas supply line, wherein the flow restrictor is spatially offset from the exit orifice of the fast acting equilibrium valve.
2 more elements
A method for pressurizing a gas transport system after a flow of gas through the gas transport system has been prevented, the method comprising:
- opening an equilibrium valve in a bypass line while maintaining a closed position of a supply valve in a high pressure supply line to allow gas to flow through a flow restrictor that controls a rate of change of a pressure downstream from the equilibrium valve so that gas flows from an aircraft gas supply through the high pressure supply line bypassing the supply valve to one or more pieces of equipment onboard an aircraft that receive high pressure gas from the high pressure supply line, the flow restrictor and equilibrium valve being disposed at predetermined locations within the bypass line and relative to each other so that the flow restrictor is configured to mitigate adiabatic heating and particle impingement on interior walls of the high pressure supply line caused by an inrush of high pressure gas from the aircraft gas supply into the high pressure supply line upon the pressurization of the gas transport system;
- determining that the pressure downstream from the equilibrium valve or the pressure downstream from the supply valve is at a stabilized pressure when the equilibrium valve is open and the supply valve is closed;
- and
- opening the supply valve to provide a high pressure flow of gas through the supply valve at an operating pressure.
1 more element
Dependencies are inferred from the claim text.