Commissioning of the oil system. The oil circulation of the lubricating oil and regulating oil system. After the installation work of the turbine oil system is completed, the main fuel tank of the turbine is thoroughly cleaned, all the throttle orifices on the oil system are removed, and the power oil pipes, Short-circuit the control oil pipe with the oil return pipe, and short the pressure oil pipe of the steam extraction check valve with the oil return pipe. After completing the above temporary measures before flushing, replenish new oil to the main oil tank to the normal oil level. Then start the AC oil pump, and after the trial run is qualified, use the AC oil pump to cyclically flush the lubricating oil and the speed regulating oil system. The circulating flushing of the oil system is carried out in two steps. **Step by pressing the mechanical handle of the manual brake and stop on the machine head side, thereby cutting off the system’s oil supply to the speed control system, that is, the speed control system is isolated, and the AC oil pump is used to circulate the lubricating oil system until the oil The quality has passed the laboratory test. The second step is to install a blocking plate at 517mm of the power oil pressure and lubricating oil pressure distribution throttle orifice to isolate the lubricating oil system, and lift the mechanical handle of the manual brake on the side of the machine head to supply oil to the speed control system. , The oil circuit of the regulating oil system and the steam extraction check valve is cyclically flushed until the oil quality is qualified, and the oil quality* finally reaches the US MOOG four-level standard.

Setting of the oil system safety valve and spill valve After the oil system cycle is flushed, the system is restored to perform the setting of the oil system safety valve and spill valve. First put in the electric heating device of the oil tank to heat the oil temperature to about 40e, then start the AC oil pump, pass the adjustment bolt on the safety valve through the Northeast Electric Technology, set the operating oil pressure value of the oil system safety valve to 2MPa, and then pass it on the oil spill valve. The adjustment bolt of the oil spill valve sets the operating oil pressure value of the spill valve to 118MPa. The adjustment of the lubricating oil pressure and the power oil pressure is through the combined adjustment device of the power oil pressure and the lubricating oil pressure on the top of the oil tank, and the power oil pressure is adjusted to 1165MPa, the lubricating oil The oil pressure of the oil supply pipe is adjusted to 0135MPa, and the power oil pressure and lubricating oil pressure are combined adjustment device. The size of the throttle orifice at the oil inlet of each bearing bush is provided to adjust the oil pressure and oil intake of each bearing bush.

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Link to this article:Use AC oil pump to circulate and flush lubricating oil and speed regulating oil system

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