Abstract
Natural gas compressor is the absolutely necessary link of natural gas storage and transportation technology. The safety operation of the exhaust steel tube directly influences the ability of natural gas gathering and transportation system. In this paper, the accident of the exhaust steel tube explosion of natural gas compressor was carried out to study the reasons of the failure using methods of macroscopic analysis, size measurement and SEM et al and proposed the safety countermeasures. The results show that the failure of exhaust steel tube related to the wicked service conditions, rough machining, the fatigue crack initiation and propagation. The sulfide stress corrosion (SSCC) and the longitudinal processing damage accelerate the fatigue crack propagation rate.
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