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我厂酮苯脱蜡装置的5台GD500/355型离心式压缩机是这套装置的心脏设备,1969年从西德波尔齐克公司引进,已运行20多年。由于冲刷磨损和疲劳,整机效率下降,尤其是转子多次发生叶片铆钉断裂、气封齿磨损、倾倒等现象。其中以3~#冷冻机转子叶片冲刷较严重,叶栅端部产生裂纹长达10毫米,宽1.5毫米。轴颈弯曲0.05毫米,大大超过了0.03毫米的控制值。气封齿磨损造成级间串气,压缩机效率下降,虽经几次修复,更换了气封齿,但转子叶片的冲刷腐蚀,裂纹无法解决。轴虽经几次校直,但难以达到控制值以下,因此运行时振动超标达0.05～0.06毫米。经有关技术人员鉴定分析,认为继续使用会造成事故。 针对此设备运行状况,我们对整个机组进行了分析,认为该机组的运行期虽已超过设计规定的15年,但还能继续使用。为了确保安、稳、长、满、优运行,保证
Five GD500 / 355 Centrifugal compressors of Ketone Dewaxing Plant in our factory are the heart equipment of this device. In 1969, they were introduced from West German Polszczyk and have been in operation for over 20 years. Due to erosion wear and fatigue, the machine efficiency decreased, especially the rotor blade rupture occurred many times, gas seal wear, dumping and so on. Among them, 3 ~ # freezer rotor blade erosion is more serious, the blade crack at the end of up to 10 mm, 1.5 mm wide. The journal flexes 0.05 mm, well above the 0.03 mm control value. Gas seal tooth wear caused by string level, the compressor efficiency decreased, despite several repairs, the replacement of gas seal teeth, but the erosion of the rotor blade erosion, cracks can not be solved. Even though the shaft straightening several times, but difficult to reach below the control value, so run-time vibration exceeded 0.05 ~ 0.06 mm. Appraised by the relevant technical personnel analysis, that the continued use can cause accidents. In view of the operation status of this equipment, we analyzed the whole unit and considered that the operation period of this unit exceeded the design requirements for 15 years, but it can still be used. In order to ensure security, stability, long, full, excellent operation, guarantee