#screw-type air compressor #300bar air compressor #mobile air compressor for drilling well
Air compressor common faults and cause analysis
The reason for the reduction of the volume flow of the air compressor
1. The air compressor cannot reach the rated speed, such as the transmission belt slipping, etc.;
2. Leakage. like:
1) The valve plate is deformed, worn unevenly or there is dirt on the contact surface;
2) The joint surface between the valve seat and the valve hole is not strict or the gasket is forgotten to be added or the copper gasket is not annealed during installation;
3) The valve spring is not installed or broken, the valve spring is too weak and the closing is too late;
4) Excessive wear of the cylinder and piston ring, and the piston ring is stuck, broken or the lap is turned to one side;
5) The contact between the cylinder head and the cylinder body is not strict and the unloading valve leaks.
3. The air filter is dirty and blocked or the air valve channel is too much carbonized or the air valve spring is too hard, causing the suction resistance to be too large;
4. The clearance volume is too large;
The reason why the interstage pressure of the air compressor exceeds the normal value or is lower than the normal value
1. When the interstage pressure exceeds the set value of the low-pressure stage safety valve, the safety valve will open if it is normal. The interstage pressure is too high due to:
1) The mass flow drawn from the intermediate container by the rear-stage is reduced, including the leakage of the exhaust gas from the high-pressure cylinder of the differential piston air compressor through the piston ring.
Too many low pressure cylinders;
2) Poor inter-stage cooling: Air compressors with two-stage compression often work for a period of time, and the intermediate pressure is in the same working condition.
The gas volume gradually increased and the gas delivery volume gradually decreased, which was mainly because the carbon deposition in the latter stage valve gradually increased.
2. The reason why the interstage pressure is lower than the normal value is often due to the leakage of the interstage gas or the reduction of the flow rate of the previous stage.
The reason why the interstage pressure of the air compressor exceeds the normal value or is lower than the normal value
When the pressure between the 1st stage exceeds the setting value of the low-pressure stage safety valve, the safety valve will open if it is normal. The interstage pressure is too high due to:
1) The mass flow drawn from the intermediate container in the latter stage is reduced, including the leakage of the exhaust gas from the high pressure cylinder of the differential piston air compressor through the piston ring
Too many low pressure cylinders;
2) Poor inter-stage cooling: Air compressors with two-stage compression often work for a period of time, and the intermediate pressure is in the same working condition.
The gas volume gradually increased and the gas delivery volume gradually decreased, which was mainly because the carbon deposition in the latter stage valve gradually increased.
2. The reason why the interstage pressure is lower than the normal value is often due to the leakage of the interstage gas or the reduction of the flow rate of the previous stage.
Air compressor exhaust temperature is too high.
reasons may be:
1) Air valve leakage;
2) Poor cooling of the cylinder or cooler;
3) The suction temperature is too high;
4) Exhaust pressure is too high.
The reason why the interstage pressure of the air compressor exceeds the normal value or is lower than the normal value
When the pressure between the 1st stage exceeds the setting value of the low-pressure stage safety valve, the safety valve will open if it is normal. The interstage pressure is too high due to:
1) The mass flow drawn from the intermediate container in the latter stage is reduced, including the leakage of the exhaust gas from the high pressure cylinder of the differential piston air compressor through the piston ring
Too many low pressure cylinders;
2) Poor inter-stage cooling: Air compressors with two-stage compression often work for a period of time, and the intermediate pressure is in the same working condition.
The gas volume gradually increased and the gas delivery volume gradually decreased, which was mainly because the carbon deposition in the latter stage valve gradually increased.
2. The reason why the interstage pressure is lower than the normal value is often due to the leakage of the interstage gas or the reduction of the flow rate of the previous stage.
Air compressor exhaust temperature is too high.
reasons may be:
1) Air valve leakage;
2) Poor cooling of the cylinder or cooler;
3) The suction temperature is too high;
4) Exhaust pressure is too high.
