【Q&A Question 102】2016.07.31
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【Q&A Question 102】July 31, 2016: What tasks need to be carried out before starting up a circulation machine? The answer key will be available after responding; scoring is based on addressing the key points. Steam drain heating pipes, establish a lubricating oil system, put the dry gas seal into operation, and install a backflow isolation gas. For the nitrogen displacement unit, open the inlet and outlet manual valves and rotate the turbine.
Startup procedure for the circulation machine； 1. Checks before startup ； 1) All accessories for the compressor unit are complete ； 2) The anchor bolts are complete and properly tightened ； 3) Utility services such as water, electricity, steam, air, and oil are in place ； 4) The indoor operating system is functioning properly, and the test lights on the alarm panel are working correctly ； 5) Add qualified lubricant to the lubrication tank up to the maximum level ； 6) Check that all instruments are present and in good working condition ； 7) The lubrication system has no leakage points ； 8) Activation of each safety valve ； 9) Drain the inlet and outlet pipelines of the compressor and activate the heat tracing ； 10) Compressor inlet and outlet pipelines and dry gas seal section
If it is a reciprocating compressor, first check the lubricating oil and oil pressure, water pressure, electricity, etc., then start it after turning the crank
Lubricating oil system, cooling water system, oil injector, gear turning, interlock verification, gas displacement. . .
Check the process procedures and instruments, examine anti-surge and other interlocks, check for lubricant leaks, perform crankshaft rotation checks, put the turbine condensing system into operation, and carry out steam introduction and condensate drainage as well as cylinder warming……
1. Nitrogen displacement is successful； 2. Commissioning of dry gas seal ； 3. Commissioning of the lubricating oil system ； 4. Commissioning of the cooling water system ； 5. Check that the prime mover (turbine or motor) is operating normally ； 6. Contact the mechanical, electrical, and instrumentation teams to confirm that the conditions for starting up are met. 7. Report to the dispatch team
Inspection, introduce isolated nitrogen, dry gas sealing, lubricating oil station, pipe warming, activate gas seal gas cooler, crank the machine, static tests
Connect the motor to power supply, start the cooling water supply, activate the instrument air supply, open all inlet and outlet valves, engage the lubrication system, activate the interlocks, drain liquid, perform shaft rotation, and start the motor
The turntable is disengaged, and a circulation system for oil and water is established to regulate the oil temperature and pressure; once the water pressure meets the required levels, the dry gas seal is activated. The pressure difference in the balance tube is adjusted, and the anti-surge valve opens
Steam drain heating pipes, establish a lubricating oil system, put the dry gas seal into operation, and install a backflow isolation gas. For the nitrogen displacement unit, open the inlet and outlet manual valves and rotate the turbine.