某电厂在调试启动时发生断油烧瓦事故。该事故的原因是主油泵出口高压管焊接不良,存在断缝,产生漏油;在油泵吸入口区域,泄漏形或的高压射流使油泵严重气塞,吸不上油;又设备没有设置进油节流孔板,致使轴承回油来不及排出,导致油挡甩油;由于油泄漏及油泵出力不足,致使不能保证供油量。对机组润滑油系统主油泵出口管断缝处重新焊接并进行压力试验以根除油泄漏点、增设进油节流孔板、调整轴承用油量以符合设计油量、更换出力不足的交流润滑油泵。经过处理,机组再次启动定速后,各油压达到设计值,油系统工作正常、可靠。 A power plant in the commissioning of start-up occurred when the oil-burning tile accident. The reason for the accident is the main oil pump outlet high-pressure pipe welding is poor, there is broken seam, resulting in oil leakage; in the suction area of ​​the pump, the leakage or high-pressure jet serious pump gas plug, not oil; equipment is not set into the oil Throttle orifice, resulting in bearing oil back and forth to discharge, leading to oil rejection Oil; due to oil leakage and insufficient pump output, resulting in no guarantee of fuel supply. On the unit of the main oil pump system oil pump outlet pipe seam re-weld and pressure test to eradicate oil leakage point, the addition of oil throttling orifice plate, adjust the bearing oil to meet the design of oil, replace the lack of output exchange lubrication pump . After processing, the unit starts again after the fixed speed, each oil pressure achieves the design value, the oil system works normally, reliably.