Method and system for monitoring a reciprocating compressor valve
First Claim
1. A method for monitoring a condition of at least one valve positioned with respect to at least one of a first chamber and a second chamber of a reciprocating compressor, said method comprising:
- establishing a compressor operation cycle including at least one of a valve opening event, a valve closing event and a rod reversal event;
determining a crank angle at each of the at least one of the valve opening event, the valve closing event and the rod reversal event during the compressor operation cycle using at least one of a static pressure input and a machine speed input; and
diagnosing a valve leak condition during the compressor operation cycle at the valve closing event wherein the at least one valve is closed.
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Accused Products
Abstract
A method for monitoring a condition of at least one valve positioned with respect to at least one of a first chamber and a second chamber of a reciprocating compressor is provided. The method includes establishing a compressor operation cycle including a valve opening event, a valve closing event and/or a rod reversal event. A crank angle is determined at each of the valve opening event, the valve closing event and/or the rod reversal event during the compressor operation cycle using at least one of a static pressure input and a machine speed input. The method further include diagnosing a valve leak condition during the compressor operation cycle at the valve closing event, wherein the at least one valve is closed.
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Citations
20 Claims
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1. A method for monitoring a condition of at least one valve positioned with respect to at least one of a first chamber and a second chamber of a reciprocating compressor, said method comprising:
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establishing a compressor operation cycle including at least one of a valve opening event, a valve closing event and a rod reversal event;
determining a crank angle at each of the at least one of the valve opening event, the valve closing event and the rod reversal event during the compressor operation cycle using at least one of a static pressure input and a machine speed input; and
diagnosing a valve leak condition during the compressor operation cycle at the valve closing event wherein the at least one valve is closed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for monitoring a condition of at least one valve positioned with respect to at least one of a first chamber and a second chamber of a reciprocating compressor, said system configured to:
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collect data by generating a crank angle degree variable and incrementally increasing the crank angle degree variable during each of a plurality of rule processing cycles to establish a compressor operation cycle;
plot a pressure measured within the first chamber and a pressure measured within the second chamber during the compressor operation cycle as a function of crank angle;
plot a gas load and an inertial load measured within at least one of the first chamber and the second chamber during the compressor operation cycle as a function of crank angle;
plot an acceleration waveform sample including a cylinder acceleration during the compressor operation cycle as a function of crank angle;
diagnose a valve leak condition during the compressor operation cycle at a valve closing event wherein the at least one compressor valve is closed; and
diagnose a restricted flow condition during the compressor operation cycle at a valve opening event wherein the at least one compressor valve is open. - View Dependent Claims (14, 15)
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16. A computer program embodied on a computer readable medium for monitoring a condition of at least one valve positioned with respect to at least one of a first chamber and a second chamber of a reciprocating compressor, said computer program comprising a code segment configured to:
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determine a crank angle at each of a valve opening event, a valve closing event and a rod reversal event using at least one of a static pressure input and a machine speed input;
diagnose a valve leak condition during a compressor operation cycle at the valve closing event; and
diagnose a restricted flow condition during the compressor operation cycle at the valve opening event. - View Dependent Claims (17, 18, 19, 20)
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Specification