High Quality Diesel Head Rotor 146403-9620 VE Pump Parts Rotor Head Spare Part

A certain series of diesel engines have become one of the advanced generators due to their high thermal efficiency, high economy, high reliability and easy maintenance. The main moving parts of the diesel generator set include the crankshaft assembly, piston connecting rod assembly, main bearing bush, connecting rod bearing bush, etc. The crankshaft is equipped with a driving gear to drive the camshaft, fuel injection pump and its auxiliary devices. The transmission shaft is installed in the bearing seat. The bearing seat consists of a housing, a transmission shaft, a rolling bearing, a slip ring, an O-ring, a shaft sealing ring, a locking nut, an internal hexagon socket screw, and an adjusting ring. The state of the transmission shaft is adjustment. quality processing. The following will provide detailed explanations from several aspects such as on-site investigation, cause analysis, and treatment methods. When a diesel generator set was operating at a load of 700kW, the drive shaft of the diesel engine's high-pressure diesel pump broke. When the failure occurred, the diesel engine had been running for approximately 1,000 hours. Diesel engine disassembly and inspection After the accident, relevant personnel were immediately organized to dismantle and inspect the diesel engine. It was found that the high-pressure diesel pump drive shaft was broken between the positioning nut and the coupling, and there were signs of wear and rust on the fracture. Check that the high-pressure diesel pump rack moves flexibly and that the high-pressure diesel pump transmission flange nut is tight and not loose. Check that there are no foreign objects in the V-shaped angle of the diesel engine and that there are no obvious knock marks on the pump drive shaft. Remove the small front-end cover of the diesel engine and check that the fastening bolts of the high-pressure diesel pump transmission gear are not loose. Manually crank the diesel engine for more than two turns and it is normal. Observe the front-end gear system. There are no abnormalities in the appearance and rotation of each component. Remove the fresh water and seawater pumps. , touch and check the camshaft gear and water pump gear. There is no abnormality in the visible parts. In order to investigate the cause of the failure, remove the high-pressure diesel pump transmission device and high-pressure diesel pump coupling, and arrange for return to the factory for inspection. After returning to the factory, check the pump drive shaft. There is slight jamming in manual rotation, and the large positioning nut is not loose. There are no slip marks between the shaft and the flange tapered surface. The assembly of the pump transmission assembly meets the requirements and there are no abnormalities. Disassemble the drive shaft, and the bearings at both ends of the drive shaft are not damaged.