Preliminary evaluation of effective vibration analysis for the fault diagnosis of natural gas engine-driven compressor

In this paper were presented results of preliminary research of the fault diagnosis of natural gas engine-driven compressor by vibration analysis. Natural gas engine-driven compressors are heavily exploited during delivering natural gas to the transmission network of Poland. Every failure brings about interferences to gas system, furthermore it causes notably cost of maintenances. The major failures are piston seizures and overly level of vibration causes by exceedingly wear, an unbalanced engine after repairs and dry friction. During research investigated three natural gas engine-driven compressors. Acceleration of engine cylinders was measured in cylinder axis and perpendicularly axis and acceleration of compressor cylinders, engine fundament and gas receiver in three axes. Results obtain during investigation of engine cylinders one gas engine-driven compressor collates with results of validation of engine cylinders after their stripping. Preliminary results of investigation indicate proper trend to set up diagnostic symptoms. It was found that for increasing of information amount is necessary to carry out synchronous measurements and its envelops in domain of crankshaft rotation angle. Very important source of diagnostic information can be shaft acceleration, determined basing on existing system of signals generation. The investigation is to be continued.