【Q&A Question 130】2016.08.28
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【Q&A Question 130】August 28, 2016: What are the inspection items for reciprocating pumps? The answer key will be available after responding; scoring is based on answering the key points. The overall operating noise of the compressor, the noise from the cylinders, the status of cooling water supply to various parts, the oil injection by the oil injector and the oil level in the tank, the temperature of the air valves, the pressures of intake and exhaust air at the chassis, detection of leaks at the packing using a hydrogen sulfide detector, the status of the control panel (including the tank heater, etc.), the pressure and temperature of the lubricating oil, the status of cooling water supply between stages, and inspection of the liquid level in the inter-stage separation tanks. If inspecting a shut-down unit, it is necessary to confirm whether it meets the standby conditions.
Check the machine vibration, oiler level, and injection condition. Oil leakage from the filler. Oil tank level status.
Inspection items: overall operating sound of the compressor, sound from the cylinders, status of cooling water supply to various parts, oil injection by the oil injector and oil tank level, temperature of the air valves, inspection of intake and exhaust pressures at the chassis, detection of leaks at the packing using a hydrogen sulfide detector, status of the control panel (including the oil tank heater, etc.), lubricating oil pressure and temperature, status of cooling water supply between stages, and inspection of the liquid level in the inter-stage separation tanks. If inspecting a shut-down unit, it is necessary to confirm whether it meets the standby conditions.
The daily inspection of reciprocating compressors is divided into three parts: the main unit, the drive equipment, and the auxiliary equipment. The main unit checks the inlet and outlet pressures and temperatures at each stage of the compressor ； Pressure and temperature of lubricating oil at various lubrication points ； Are there any leaks in the connection pipelines at all levels? ； Is there any abnormal noise, overheating, or vibration in the compressor itself? ； Are all connection points secure, and are the bolts tight? ； Are all control valves functioning properly? ； Is the seal gas pressure normal? ； For the motor of the drive device, it is necessary to check the motor current and temperature, as well as whether the temperature of the motor bearings is within normal limits ； For auxiliary equipment such as the lubricating oil station, checks are mainly carried out on the oil level in the tank and whether the oil pump is functioning properly. As for the standby machine: it is checked whether the cooling water is in use ； Is power supplied? ； Whether the existing problem has been resolved.
The daily inspection of reciprocating compressors is divided into three parts: the main unit, the drive equipment, and the auxiliary equipment. The main unit checks the inlet and outlet pressures and temperatures at each stage of the compressor ； Pressure and temperature of lubricating oil at various lubrication points ； Are there any leaks in the connection pipelines at all levels? ； Is there any abnormal noise, overheating, or vibration in the compressor itself? ； Are all connection points secure, and are the bolts tight? ； Are all control valves functioning properly? ； Is the seal gas pressure normal? ； For the motor of the drive device, it is necessary to check the motor current and temperature, as well as whether the temperature of the motor bearings is within normal limits ； Auxiliary equipment such as the lubricating oil station is mainly used to check the oil level in the tank and whether the oil pump is functioning properly. . . .
Cylinder cooling water pressure and temperature, lubricating oil temperature and pressure, lubricating oil for the motor’s front and rear bearings, temperature of the inlet and outlet valves, motor circulation water, and whether there are any noises from the compressor motor and its mechanical components.
1. Regularly check the temperature of bearings in all sections. 2. Regularly check the pressure and temperature of each outlet valve. 3. Regularly check the lubricating oil.
What should be checked during the routine inspection of a reciprocating compressor? The basic items for daily inspection are as follows: 1. Check the lubrication oil pressure, which 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 spindle 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 leaks, water leaks, and air leaks in all areas. 11. Keep records of the compressor’s operating conditions.
Is water flowing properly? Is the oil filler dripping? Is the oil pressure low? Is the oil level in the reservoir sufficient? Is the quality of the oil good? Are the operating components overheating? Is there any noise? Is the current level excessive? Is there any oil or air leakage?
Exhaust pressure and temperature at various levels, nitrogen filling in the packing, nitrogen filling in the connection tubes, lubricating oil pressure and temperature, oil level, oil filler, coolers at various levels, liquid level in separation tanks at various levels, presence of abnormal noises, current