The operation of compressor is generally stable, but with the increase of usage time, the machine may produce wear and affect the working performance. So how to detect whether the compressor is worn? The following is a test case related to the test of the cooperative organization of I Want to Test Network, which can show you the specific details:
1. Case Background
A gas company regularly monitors the oil and liquid of multiple compressors at its production site, and has been in good operating condition for many years. However, during the monitoring in May 2015, individual copper alloy abrasive particles were found in one of the air compressors, and early wear was suspected. It is recommended that customers strengthen follow-up monitoring.
After receiving the fault feedback form, the customer immediately inspected the equipment. The only parts of the air compressor made of copper alloy and likely to wear are the air compressor motor oil seal and oil thrower, so these two are the focus of inspection. After on-site inspection, it was found that the wear of the motor oil seal and the oil thrower ring at the load end was within the normal range, but the wear of the oil thrower ring at the non-load end was more serious, with a side wear of about 3mm, and flash has been produced. There are also a large number of copper alloy abrasive particles on the removed filter element.
After finding the cause of the fault, the following treatment was carried out on site:
(1) The oil ring on the non-load end of the air compressor motor was replaced, and the bearing box was drained and cleaned.
(2) The filter core of the air compressor oil station was replaced and the filter cylinder was cleaned.
(3) The air compressor oil station was filtered online.
IV. Customer Feedback
Due to the timely discovery, the fault did not cause any economic losses. The customer said that the fault feedback form was sent very timely, because the equipment was still in a shutdown state after the oil sample was taken. Once the equipment is running, it will take a year before it can be shut down again. By then, the fault is likely to develop more seriously, and the consequences are unpredictable.