Cyclic flushing of lubricating oil and modulating oil system with AC oil pump

Oil system commissioning. Lubricating oil and regulating oil system oil circulation After the installation of the steam turbine oil system is completed, the main oil tank of the steam turbine is completely cleaned, all the orifice plates on the oil system are removed, and the power oil tubes in the speed regulating system are The control oil pipes are respectively short-circuited with the oil return pipe, and the pressure oil pipe of the extraction steam reverse door is short-circuited with the oil return pipe. After completing the above temporary measures before flushing, the main oil tank is supplemented with new oil to the normal oil level. Then start the AC oil pump. After passing the test, use the AC oil pump to cycle the oil and speed control oil system. The cyclic flushing of the oil system takes place in two steps. The first step is to press the manual handle of the head side to stop the mechanical handle, which cuts off the supply of oil to the speed control system. That is, the speed control system is isolated, and only the oil system is cyclically flushed with the AC oil pump until the oil is reached. Quality passed the test. The second step is to install a blockage plate at the power oil pressure and lubricant pressure distribution orifice plate 517mm to isolate the lubricating oil system and lift the oil supply system to the speed regulation system by the mechanical handle oil system that is manually opened and closed at the head side. Circulation flushing of the oil system regulating the oil system and the extraction check valve until the oil quality is met, the oil quality eventually reaches the US MOOG Level IV standard.

Oil System Safety Valve and Oil Spill Valve After the oil system cycle flushing is completed, the system is reset to set the oil system safety valve and oil spill valve. First of all, put into the tank electric heating device to heat the oil temperature to about 40e, and then start the AC pump, through the northeast electric power technology over the safety valve adjustment bolt to the oil system safety valve operating oil pressure value is set to 2MPa, and then through the oil spill valve The adjusting bolt will set the oil pressure value of the oil spill valve to 118MPa. The adjustment of the oil pressure and the power oil pressure will be made through the power oil pressure and lubricating oil pressure adjustment device at the top of the tank, and the power oil pressure will be adjusted to 1165MPa and the lubricating oil. The oil pressure of the fuel supply pipe is adjusted to 0135 MPa, and the power oil pressure and the lubricant pressure are jointly adjusted. The dimensions of the orifice plates at the inlet ports of each bearing bushing are adjusted to adjust the oil pressure and the oil inlet amount of each bearing bush.