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一、前言 “李白”轮是江南造船厂为中波轮船公司建造的四条同类型船中的首制船。载重量18200T,主机为B&W 5L60MCE型五缸二冲程低速柴油机,额定功率为5220kW,额定转速为103r/min。 该船在交付中波轮船公司投入航运一年中,发觉主机和机舱振动较大,并发现左舷侧由艏往艉数的第三根主机顶部横向支撑与机舱船体结构的连接部位出现裂缝的故障。主机的支撑形式参见图1。经过多次局部加强、补焊,裂缝仍然出现,主机仅能在95r/min以下运转。
I. Preface The “Li Bai” round is the first ship of four similar types built by Jiangnan Shipyard for China Shipbuilding Company. Load capacity of 18200T, the host for the B & W 5L60MCE five-cylinder two-stroke low-speed diesel engine, rated at 5220kW, rated speed of 103r / min. During the year when the ship was delivered to CSCL, it was found that there was a large vibration in the mainframe and the engine room. It was also found that there was a failure of the transverse connection between the top of the third mainframe at the port side and the connection to the hull structure of the engine room . Host support form see Figure 1. After several local strengthening, repair welding, cracks still appear, the host can only operate below 95r / min.