On-line continuous monitoring of high pressure reciprocating compressors

Main Functionality

• On line signal processing
• System customization
• Aggregation of different tags into Software Diagnostics Sensors.
• Automatic trend tracking and the early discovery of minor disturbances

Prognosis of time when a tag or a Software Sensor value reaches a threshhold value.

Example: “O” ring problem diagnostics:
Procedure 1. Using low inertia temperature probes located in cylinder suction heads.  Temperatures vary in the course of compressor operation.  O-ring leakage causes growth of the mean temperature values and changes in the temperature signatures. The PSE software detects and tracks these changes.
Procedure 2. “O” ring wear causes the emission of ultrasound signals in the range of 40-200 kH. Our wireless ultrasound sensors registers these signals, measure its frequency and amplitude and monitors these changes relative to the base line conditions in a specific cylinder
The “O” ring failure model (Failure Factor) aggregates the key diagnostics parameters extracted from temperature and acoustical emission signatures. The result is one indicator signalling “O” ring health.
The system trends the Failure Factor and sends alarms when the “O” ring wear grows through alert values

Failures detected        Method of detection