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Improving the oil drainage system in the gas generation unit at Linyi to ensure safety Author/Source: Lu’an Chemical Fengxi Group Date: 2022-04-28 Views: 13 To ensure compliance with safety standards, the gas generation workshop of Linyi branch continuously works to identify and rectify potential hazards on site. In response to failures in the oil pressure control system, such as sudden power outages of the oil pumps in System No. 3 and ruptures in the oil cylinder seals, the workshop carried out targeted improvements to the oil drainage systems located beneath the circular doors at the bottom of each furnace in System No. 3. By installing an HD2 model hydraulic check valve on the pressure oil pipe leading to the lower part, the inlet and outlet oil pipes are connected in series to prevent backflow of oil. This valve features a conical spool, which provides excellent sealing performance. In the event of an emergency fault in the oil circuit system, the spool in the hydraulic check valve closes automatically to prevent backflow of oil, maintaining a normal support pressure of 5.0 MPa in the oil circuit and ensuring that the circular door remains properly sealed. At present, Furnaces 5#–9# have been modified and leak-tested; spare parts for the oil pipe joints of Furnaces 1#–4# are currently being manufactured, and the modification work will proceed in an orderly manner. After the renovation of the gray oil pipeline system, the need to manually support the circular gate was eliminated, reducing the workload on employees. It also prevented various types of accidents and eliminated problems such as leakage from the circular gate, thereby improving the working environment and providing a solid foundation for achieving safety standards in production.