空压机曲轴连杆机构的失效分析

Failure Analysis of Crankshaft Connecting Rod System for Air Compressor

基于油液分析与铁谱技术方法,研究分析空压机曲轴连杆机构失效的原因。采用振荡球式黏度计、原子发射光谱仪、分析式铁谱仪及铁谱显微镜测试故障空压机的在用油,采用铁谱分析水分测试法定性定量测试润滑油水分污染,检出巴氏合金轴瓦故障状态下巴氏合金摩擦聚合物图谱并系统阐述其产生机制。综合分析得出曲轴连杆机构失效的主要原因是选用润滑油不合理、油液严重污染、维护检修不及时而演变成为故障链式反应。对空压机的故障提出防治改进措施。

The failure reasons of crankshaft connecting rod system for air compressor were analyzed by the methods of oil analysis and ferrography technology. Oscillating-ball Viscometer, Atomic Emission Spectrometer, Analytic Ferrographic Instrument and Ferrographic Microscope were used to analyze the used oil of the trouble machine. The pollution of lubricants was examined by qualitative and quantitative methods, and the frictional polymer atlas of babbit alloy for the bearing under fault condition was checked and the mechanism of production was explained. Comprehensive analysis shows that the failure reason for the crankshaft connecting rod system lies in the unreasonable selection of lubricants, the serious pollution of oils and chain reaction of accident for the later maintenance and inspection. Some suggestions about the improved means on the fault of air compressor were given.