Brief analysis of the reasons for the reduction of the displacement of the screw air compressor

Brief analysis of the reasons for the reduction of the displacement of the screw air compressor

"Air compressors are general-purpose mechanical equipment. They are now widely used in various fields. Due to the motor power and the length of the main engine shaft, the air compressor has a large and small displacement. The following is the insufficient displacement of the air compressor proposed by the customer. Do a simple analysis of the phenomenon."

　　 One, the selection is too small

Many users do not know the specific gas usage of their production at the beginning, so they choose the approximate type. At this time, the exhaust pressure cannot rise, and it is lower than the rated exhaust pressure, which cannot meet the normal gas use of the factory. At this time, you can check Check if there are any leaks in the pipeline. Close the valve behind the gas storage tank. If the unit can quickly increase the pressure and open the valve, the pressure will drop quickly and eventually reach a pressure point. This can confirm that the air compressor unit is too small. The displacement of the unit is less than the actual gas consumption of production.

　　Solution: add a new unit to make the air compressor's exhaust volume 10-20% more than the air volume the most scientific.

Brief analysis of the reasons for the reduction of the displacement of the screw air compressor

　　 2. Whether to add gas equipment

　　 After using the air compressor unit for a period of time, the air volume is obviously insufficient, the pressure cannot rise, and it is maintained at the offline position of the rated air consumption. At this time, you should first check whether there is any new air-using equipment. If there is a new air-using equipment, what is the air consumption. Compare with the air compressor to see if it can meet the requirements. If not, please add a new air compressor. Unit, increase the displacement.

　　 If there is no new gas equipment, the exhaust volume is still not enough, first check the pipeline for leaks. If the pipeline has no leaks, it is the problem of the air compressor itself.

　　 The air compressor unit's insufficient displacement has the following problems:

　　 1. Is maintenance timely

The air compressor discharge volume decreases. After eliminating the above possibility, firstly see whether the air compressor has been maintained and how long it has been maintained. If the environment is not ideal, check whether the air filter is blocked when the air compressor runs for 2000 hours. Air dust removal, serious blockage, replace with a new air filter.

　　 In many cases, the air compressor's exhaust volume decreases, and there is no major problem. The customer is negligent in maintenance and the air filter of the air compressor is blocked. After replacing the new air filter, it can be used normally.

　　 In addition to the air filter, lubricating fluid and other filter elements are also critical. Check whether the lubricating fluid is within the standard range. If it is missing, please add it appropriately.

Brief analysis of the reasons for the reduction of the displacement of the screw air compressor

　　2, whether the intake valve is fully opened

The air compressor exhaust volume drops, check the unit, just maintenance, eliminate the three filter and oil problem, this is first to check the air compressor intake valve, remove the intake hose, open the air compressor, watch the intake valve Is the opening degree normal? The theoretical design service life of the intake valve is 100,000 operations. Because each manufacturer uses different brands and batches, the quality is also different. Therefore, the failure of the intake valve may cause the unit's displacement to decrease.

　　 If the intake valve cannot be fully opened when the air compressor is loaded, it can be concluded that the decrease in the exhaust volume is a failure of the intake valve and should be removed for maintenance or replaced.

　　3, motor failure

After the above-mentioned troubleshooting of the intake valve failure, the air volume of the unit remains unchanged. It should be considered whether the motor is faulty. Due to a local short circuit in the motor coil, or bearing damage, or motor shaft wear, the motor speed is lower than the rated speed. The air compressor displacement is decreased, the motor coils, bearings, etc. should be repaired, and the air compressor displacement shall be tested after repair.

Brief analysis of the reasons for the reduction of the displacement of the screw air compressor

　　4. Environmental changes, resulting in a decrease in exhaust

　　Before used in the inland area, because the factory was built in the northwest region, the air compressor was used in the new factory along with other equipment, the altitude increased, and the environment became humid, which may cause the unit's exhaust capacity to decrease.

　　The higher the altitude, the thinner the air, and the smaller the air production per unit time. The moisture in the air is too large, and the compressed air contains a lot of moisture. In the post-processing, water vapor is precipitated, resulting in a decrease in the exhaust volume.

　　 The above is a simple analysis of the reduction of screw air compressor displacement. Of course, there are many aspects to the problem of insufficient air compressor displacement. Welcome to leave a message and exchange.