Systems and methods for controlling pressure of fluids
First Claim
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1. A method for controlling the setpoint pressure of at least one regulator, said method comprising:
- applying fluid to a pressure setpoint port of said at least one regulator;
venting fluid from said pressure setpoint port to atmosphere; and
controlling said applying and venting to set the setpoint pressure to a predetermined pressure.
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Abstract
Systems and methods for using a dual-path fluid routing system that uses a flow restriction device to enhance temperature and pressure control of fluid are provided. Systems and methods for using a setpoint pressure control system to accurately control the setpoint pressure of a regulator are also provided.
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Citations
45 Claims
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1. A method for controlling the setpoint pressure of at least one regulator, said method comprising:
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applying fluid to a pressure setpoint port of said at least one regulator;
venting fluid from said pressure setpoint port to atmosphere; and
controlling said applying and venting to set the setpoint pressure to a predetermined pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for controlling the setpoint pressure of a regulator, said method comprising:
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controlling an output pressure level provided by a servo regulator;
amplifying said output pressure level by a predetermined ratio to provide an amplified pressure level; and
applying said amplified pressure level to a setpoint pressure port of said regulator to set the setpoint pressure. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A method for controlling the setpoint pressure of a regulator, said method comprising:
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selectively turning valves of a dual-valve system ON and OFF to provide a dual-valve system pressure;
amplifying said dual-valve system pressure by a predetermined ratio to provide an amplified pressure; and
applying said amplified pressure to a setpoint pressure port of said regulator to set the setpoint pressure. - View Dependent Claims (22, 23)
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24. A system for controlling the setpoint pressure of a regulator, said system comprising:
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a setpoint pressure node;
a first valve having an inlet connected to receive a fluid and an outlet connected to said setpoint pressure node;
a second valve having an inlet connected to said setpoint pressure node and an outlet connected to atmosphere;
a third valve having an inlet connected to said setpoint pressure node and an outlet coupled to atmosphere, said third valve operative to automatically open in the event of a failsafe condition; and
control circuitry operative to selectively OPEN and CLOSE said first and second valves to control the pressure of fluid applied to said setpoint pressure node. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A system for controlling the setpoint pressure of at least two regulators, said system comprising:
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first and second setpoint pressure nodes;
a first valve having an inlet connected to receive a fluid and an outlet connected to said first pressure node;
a second valve having an inlet connected to said first pressure node and an outlet connected to atmosphere;
a third valve having an inlet connected to receive said fluid and an outlet let connected to said second pressure node;
a fourth valve having an inlet connected to said second pressure node and an outlet coupled to atmosphere;
a fifth valve having an inlet connected to said first and second pressure nodes and an outlet coupled to atmosphere, said fifth valve operative to automatically open in the event of a failsafe condition; and
control circuitry operative to (a) selectively OPEN and CLOSE said first and second valves to control the pressure of fluid applied to said first pressure node and (b) selectively OPEN and CLOSE said third and fourth valves to control the pressure of fluid applied to second pressure node. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45)
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Specification