分析呼和浩特石化公司催化裂化轴流风机故障（Fault analysis of catalytic cracking axial fan in Hohhot Petrochemical Co）.docVIP

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分析呼和浩特石化公司催化裂化轴流风机故障（Fault analysis of catalytic cracking axial fan in Hohhot Petrochemical Co）.doc

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分析呼和浩特石化公司催化裂化轴流风机故障（Fault analysis of catalytic cracking axial fan in Hohhot Petrochemical Co）

分析呼和浩特石化公司催化裂化轴流风机故障（Fault analysis of catalytic cracking axial fan in Hohhot Petrochemical Co） 1 fault passing 1.1 unit profiles Call the Petrochemical Industries Co FCCU main air blower set with flue gas turbine - axial flow fan - transmission - arrangement of three type of motor machine. Flue gas turbine and axial fan at high speed end. The motor is in the low speed section. Configuration is as follows: figure -1. Fan type is AV56-13. Inlet pressure 0.0879 Mpa (A), outlet pressure 0.41 MPa (A), rated shaft power 8200kw, rated speed 5868rpm. 1.2 self insurance chain alarm settings According to the design, the unit shut down items include four parts, such as low lube oil pressure, excessive displacement of the unit, overspeed of the unit and continuous counter flow of the unit. The vibration is too big, the design does not have the stop chain, only sends out the warning signal. When the m value is more than 87 unit vibration, a vibration alarm; when the vibration value is more than 105 mu m, issued excessive vibration alarm, stop operation by the operator. 1.3 troubleshooting content The maintenance of the main content of the work is part of the axial flow fan fan rotor repair after the back loading, static blade cylinder repair after the back loading, bearing adjustment, shafting alignment, static blade adjustment system, hood parts replacement, adjustment work bearing rotor. 1.4 the specific process before and after the failure At 12:54 on May 24, 2008, the axial vibration of the FCC axial fan soared, exceeding the 105 m alarm limit, reaching a maximum of 170 mu m. Followed by the main fan chain stop. After the accident, Hohhot Petrochemical Co quickly contacted the manufacturer of axial fans. Ask the manufacturer to send someone to the scene. In May 25th, under the guidance of factory personnel, the disintegration fan. The rotor blades were found to be seriously damaged. Here is a brief review of the process before and after the boot. The unit overhaul is due to