[Q&A Question 067] 2016.06.26
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【Q&A Question 067】June 26, 2016: What are the inspection items for the new hydrogen compressor? The answer key will be available after responding; scoring is based on addressing the key points. Check whether the oiler is injecting oil properly, whether the local instruments and transmitters are showing normal readings, whether the cylinder cooling water is functioning correctly, if there are any leaks, and whether there are issues such as cylinder collision or abnormal noises. Check whether the current display is stable, whether the startup operation is normal, whether the oil level in the bearing box window is within the normal range, and whether there is liquid in the inter-stage tanks.
Whether there are any noises during unit operation, as well as the temperatures and pressures of intake and exhaust air, the pressure and temperature of lubricating oil, the temperature of cooling water, current, etc
Valve noise, cylinder temperature, and whether there is liquid slugging noise in the cylinder. Lubricant level, pressure difference, pressure, temperature, color. Circulating water window, water temperature. Is there a liquid level in the buffer tank? Inlet and outlet pressure. Correlation between remote instruments and local instruments. Has oil been poured at the oiling point?
Check whether the oil injector of the new hydrogen compressor is supplying oil properly, whether the local instruments and transmitters are showing normal readings, whether the cylinder cooling water is functioning correctly, if there are any leaks, and whether there are issues such as cylinder collision or abnormal noises. Check whether the current display is stable, whether the startup operation is normal, whether the oil level in the bearing box window is within the normal range, and whether there is liquid in the inter-stage tanks, among other things.
1. Lubricating oil pressure: 0.2–0.4 MPa. 2. Check that the cooling water discharge temperature is ≤37–40°C. 3. Check the temperature of the lubricating oil in the engine’s oil sump; it should not exceed 60°C. 4. Check the temperature of the main shaft bearing pads; it should not exceed 70°C. 5. Check the exhaust temperature; it should not exceed the set value. 6. Check the exhaust pressure; it should not exceed the set value. 7. Check whether the instruments in the automatic control section are functioning properly ； Is the ammeter reading normal? 8. Check whether the intake valve cover is hot and whether the sound of the valve is normal. 9. Pay attention to listening for any abnormal noises or impacts as the various components operate. 10. Eliminate oil, water, and air leaks in all areas.
1. Check the lubricating oil pressure; it should be within the normal range. 0.2-04MPa 2. Check that the cooling water discharge temperature is ≤37～40℃. 3. Check the temperature of the lubricating oil in the engine’s oil sump; it should not exceed 60°C. 4. Check the temperature of the main shaft bearing pads; it should not exceed 70°C. 5. Check the exhaust temperature; it should not exceed the set value. 6. Check the exhaust pressure; it should not exceed the set value. 7. Check whether the instruments in the automatic control section are functioning properly ； Is the ammeter reading normal? 8. Check whether the intake valve cover is hot and whether the sound of the valve is normal. 9. Pay attention to listening for any abnormal noises or impacts as the various components operate. 10. Eliminate oil, water, and air leaks in all areas. 11. Keep records of the compressor’s operating conditions.
1. Check whether the motor current, stator temperature, and bearing temperature are normal； 2. Check whether the oil level in the bearing housing is normal. 3. Check for any abnormal noises during operation ； 4. Check whether the pressure and temperature of the cooling water for the motor, cylinders, and packing are normal ； 5. Check the pipelines for any signs of leakage or dripping ；
Export pressure at various levels, exhaust temperature, compression ratio, return temperature of circulating water, condition of the oil injector, lubricating oil pressure and temperature, nitrogen purging of the packing and gland
1. Wipe the equipment regularly during inspections to maintain its cleanliness. 2. Conduct air-tightness tests periodically on areas prone to leaks, such as the inlet and outlet pipelines, piston seals, valve glandings, and piston end caps. 3. Check whether the lubricating oil pressure and temperature are within the specified ranges. 4. Verify that the cooling water temperature and pressure are within the controlled limits. 5. Ensure that the suction and exhaust pressures are within the appropriate ranges. 6. Use a stethoscope to listen to the suction and exhaust valves to determine if they are functioning properly and whether there are any abnormal noises. 7. Touch the valve glandings or use a temperature measuring instrument to check if their temperatures are within the controlled range. 8. Check whether the voltage and current of the motor exceed the specified values