Systems and methods to slowly reduce the pressure in a pressure chamber over time
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United States of America Patent
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May 26, 2009
Grant Date -
Dec 7, 2006
app pub date -
Jun 3, 2005
filing date -
Jun 3, 2005
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Abstract
Systems and methods for performing a stepwise depressurization of a high-pressure fluid (liquid) filled chamber are shown and described. At least two valves are controllably opened and closed in a sequence to release a predetermined amount of pressure from the high-pressure chamber. At least some of the pressurized fluid released from the high-pressure chamber is stored, at least temporarily, in a second pressure chamber. The second pressure chamber is located between the two controllable valves. A control system controls the valves in response to a signal from at least one pressure sensor coupled to the high-pressure chamber. Additional components can be included in the system such as a pressure intensifier and a high-pressure pump, both coupled to the high-pressure chamber, and at least one other pressure sensor to improve the accuracy of the measured pressure in the high-pressure chamber.
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