The компрессор сжиженного газа is one of the core equipment in the storage, transportation and distribution system of liquefied petroleum gas (LPG). It is responsible for compressing liquid gas to the required high pressure state to ensure the safe storage and transportation of gas. Due to the key role of the liquefied gas compressor in the entire supply chain, any failure may cause the system to shut down and affect the safety and stability of the gas supply. Therefore, timely and effective diagnosis and troubleshooting are of great significance to ensure the normal operation of the equipment and improve the efficiency of the system.
This article will introduce in detail the fault diagnosis steps when an abnormality occurs in the liquefied gas compressor system to help operators efficiently troubleshoot and restore the normal operation of the equipment.
Common fault manifestations of liquefied gas compressors
Common fault manifestations of liquefied gas compressors during operation include:
1.Abnormal noise: such as friction, knocking, impact, etc., usually indicates that there is a mechanical fault inside the compressor (such as component wear, bearing damage, etc.).
2.Pressure fluctuation: Large exhaust pressure fluctuations may be caused by failure of the intake valve or exhaust valve, pipeline blockage or leakage, unstable compressor load, etc.
3.Abnormal exhaust temperature: Exhaust temperature is too high or too low, which is often a manifestation of cooling system failure, insufficient lubricating oil or excessive compressor load.
4.Insufficient or unstable flow: Insufficient gas supply or unstable flow is usually caused by flow control system failure or blockage or leakage in the air intake pipe.
5.Overheating or excessive vibration: The compressor equipment overheats or vibrates too much during operation. Common reasons include insufficient lubrication, poor airflow or damage to internal components.
LPG compressor fault diagnosis steps
When a liquefied gas compressor fails, follow the following steps to diagnose, which can help accurately locate the source of the problem and take repair measures quickly.
1.Check the electrical system
Electrical system failure is often the primary reason for the liquefied gas compressor to fail to operate normally. When diagnosing, you should start from the following aspects:
Power supply check: Make sure the motor power supply is connected normally, check whether the voltage meets the equipment requirements, and avoid compressor shutdown due to unstable power supply voltage or power shortage.
Control panel check: Check whether the indicator lights, switches and buttons on the control panel are normal, and confirm whether the automatic control system (such as start and stop procedures) is working properly.
Motor status check: Check the running status of the motor to see if there is overload, overheating, etc. If the motor itself is faulty, it may affect the normal operation of the compressor.
2.Check the gas supply system
The abnormality of the gas supply system is one of the important factors that lead to unstable operation of the compressor. At this time, the following should be checked:
Inlet valve and exhaust valve: Confirm whether the intake valve is fully open and whether the exhaust valve is working properly. If the valve is stuck, leaking or incompletely closed, it will affect the normal supply of airflow.
Pipeline system: Check whether the gas pipeline is leaking, blocked or damaged. Any slight leakage will cause the compressor to inhale insufficient gas, thereby affecting the compression effect and working pressure.
Filter and dust removal device: Check whether the filter is blocked, which affects the gas flow and the intake efficiency of the compressor. Regular cleaning of the filter can avoid the impact of blockage on the performance of the equipment.
3.Check the internal components of the compressor
If there is no abnormality in the gas supply system, the working status of the key components inside the compressor should be checked next. Common inspection steps include:
Piston, cylinder and gas valve: Check the degree of wear of the piston, gas valve and cylinder. Long-term operation may cause mechanical wear of the components, affecting the compression effect of the gas.
Bearings: Check if the compressor bearings are worn, loose or damaged. Bearing failure may cause abnormal vibration or uneven operation of the equipment.
Air tightness: Check the tightness of the compressor cylinder to ensure that the gas does not leak. Poor sealing performance will directly affect the efficiency and working pressure of the compressor.
4.Check the lubrication system
The lubrication system is essential for the normal operation of the liquefied gas compressor. Lack of lubricating oil or poor oil quality may cause serious equipment failure. The following points should be noted when checking the lubrication system:
Lubricating oil quantity and quality: Check whether the oil level is appropriate and whether the oil is clean. If the oil is found to be discolored or thickened, it needs to be replaced in time.
Oil pump and oil circuit inspection: Confirm that the lubricating oil pump is working properly and the oil circuit is unobstructed to avoid component wear or overheating due to poor lubricating oil flow.
5.Check the cooling system
Failure of the cooling system often causes overheating of the liquefied gas compressor, and in severe cases may cause equipment damage. Pay attention to the following aspects when checking the cooling system:
Coolant flow: Check whether the coolant flow is sufficient and confirm whether the coolant pump is working properly. If the coolant flow is insufficient, the compressor temperature may be too high.
Cooler cleanliness: Check whether the cooler is blocked. Keeping the cooler clean can effectively improve cooling efficiency.
6.Monitor operating parameters
Real-time monitoring of operating parameters such as pressure, temperature, and flow through an online monitoring system can effectively help diagnose the operating status of the compressor system and discover potential problems. Common monitoring steps include:
Pressure monitoring: Check whether the intake and exhaust pressures are normal. Excessive pressure fluctuations may mean that there is a fault in the system or unstable pressure control.
Temperature monitoring: Monitor whether the exhaust temperature is within the normal range. Excessive temperature may indicate a problem with the cooling system.
Vibration monitoring: Detect the vibration of the compressor through a vibration sensor. Excessive vibration may mean that the components are loose or there is a mechanical failure.
Fault diagnosis tips
Record the fault phenomenon: Whenever the equipment fails, the operator should record the fault phenomenon and related parameters in detail for subsequent analysis.
Step-by-step troubleshooting: When performing fault diagnosis, the troubleshooting should be carried out step by step. Do not rush to large-scale disassembly to avoid secondary damage.
Use expert experience: When you cannot diagnose yourself, contact the поставщик компрессоров сжиженного газа or experienced technical engineers in time for remote or on-site diagnosis.
Fault diagnosis of liquefied gas compressors is a systematic and complex process, which requires operators to have a solid technical foundation and rich troubleshooting experience. By checking the electrical system, gas supply system, compressor internal components, lubrication system and cooling system one by one, the cause of the fault can be effectively identified to ensure that the equipment resumes normal operation as soon as possible. At the same time, regular maintenance and monitoring are the key to preventing faults.