Method and installation for controlling at least one cryogenic centrifugal compressor compression line
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United States of America Patent
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Jun 26, 2007
Grant Date -
Aug 18, 2005
app pub date -
May 16, 2003
filing date -
May 24, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods and apparatuses for controlling systems of cryogenic centrifugal compressors. A predetermined curve in the form of a first parameter as a function of a second parameter is selected. The first parameter represents the rotational speed of a compressor, and the second parameter represents the mass for rate of that compressor. The speed of rotation of a downstream compressor is regulated according to the value of the suction pressure of an upstream compressor and a variable set pressure. The variable set pressure is regulated according to both actual value of the first parameter for a downstream compressor, and the theoretical value of this parameter. The theoretical value is determined from a predetermine curve using the value of the second parameter.
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