Abstract
In order to explore the failure mechanism of a reciprocating compressor system with clearance fault, we implemented a computational framework whereby a simulation model of the mechanism is established using ADAMS software in this paper, and a typical reciprocating compressor model is introduced to validate the design model. In this work, the joint clearance faults between the crankshaft and linkage, between the linkage and crosshead, and in both locations are taken into account computationally. These faults are one of the major causes of vibration. Through dynamic calculation and analysis of a system with clearance fault, the simulated results show that these clearance faults directly influence the vibration. The larger the gap size, the more severe the vibration and the higher the amplitude of the vibration. Furthermore, the clearance number also affects the vibration greatly.
Highlights
Reciprocating compressors are widely applied in the petrochemical industry and refrigeration
These models presented in the above literature are a valuable tool for analyzing or predicting a compressor’s thermodynamic behavior, including the flow rate, friction loss, and so on, but they are not suitable for analysis of the vibration or fault detection and diagnosis for translational machinery
Pont [16] developed a numerical model for a reciprocating compressor mechanism based on the kinematic and dynamic formulation and studied the secondary movements of the piston and crankshaft and their interaction
Summary
Reciprocating compressors are widely applied in the petrochemical industry and refrigeration. Rodrigo [15] introduced a numerical model of a reciprocating compressor in a startup and shutdown transient to investigate its performance in such transients These models presented in the above literature are a valuable tool for analyzing or predicting a compressor’s thermodynamic behavior, including the flow rate, friction loss, and so on, but they are not suitable for analysis of the vibration or fault detection and diagnosis for translational machinery. Pont [16] developed a numerical model for a reciprocating compressor mechanism based on the kinematic and dynamic formulation and studied the secondary movements of the piston and crankshaft and their interaction. To explore the failure mechanism of the translational mechanism based on the analysis of dynamic behavior, a simplified model for the reciprocating compressor is built by ADAMS software. We try to analyze the relationship between these oversized clearance joint faults and the vibration of the compressor body
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