Methods and apparatus for regulating turbine cooling airflow supply systems
AssigneeGeneral Electric Company
InventorsRonald Bruce Schofield, Robert David Perry, Eileen Mary Corcoran
Life of this patent
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Abstract
A check valve includes a valve housing and at least one control member. The valve housing includes a sidewall and an opening extending therethrough. The sidewall defines the opening and includes at least one recess formed therein. Each control member is rotatably coupled to the valve housing within the sidewall recess, and each control member is configured to allow flow of fluid through the valve opening in a first direction. Each control member is further configured to substantially prevent flow of fluid through the valve opening in a second direction that is opposite the first direction.
Claims20
A method for operating a gas turbine engine, said method comprising:
- directing fluid downstream from a cooling air supply duct through a check valve that includes a hollow valve housing including a sidewall that has a recess formed therein and at least one control member that is pivotably coupled to the check valve within the recess;
- and
- preventing fluid from flowing upstream into the supply duct with the check valve.
A check valve for a gas turbine engine cooling air supply system, said check valve comprising:
- a valve housing comprising a sidewall and an opening extending therethrough, said sidewall defining said opening and comprising at least one recess therein;
- and at least one control member pivotably coupled to said valve housing within said sidewall recess, said control member configured to allow flow of fluid into the gas turbine engine cooling air supply system through said valve opening in a first direction, and further configured to substantially prevent flow of fluid through said valve opening in a second direction opposite said first direction.
A gas turbine engine cooling air supply system comprising:
- a cooling air supply duct comprising an end;
- and
- a check valve coupled to said cooling air supply duct end and configured to permit fluid flow from said cooling air supply duct while substantially preventing fluid flow into said cooling air supply duct, said check valve comprising a hollow valve housing and at least one control member, said valve housing comprising a sidewall and an opening extending therethrough, said sidewall defining said opening and comprising at least one recess formed therein, said at least one control member is pivotably coupled to said valve housing within said sidewall recess.
Dependencies are inferred from the claim text.