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Oil injection water cooling screw air compressor exhaust temperature plateau and solution
(1) event description
On May 15, 2016, the air compressor unit j-6001a, which was in production and in operation, suddenly shut down interlocked. It was found that the PLC display screen showed alarm of high exhaust temperature, high pressure difference between oil and gas separator and high pressure difference between oil filtration.In order to ensure the safe operation of the plant production, the standby unit j-6001b is replaced, and the faulty unit j-6001a is shut down for maintenance.
(2) brief introduction of maintenance
At 8:30 on May 16, 2016, the failed unit j-6001a was overhauled. In view of the alarm of high exhaust temperature of the unit, the alarm of high pressure difference of oil and gas separator and the alarm of high pressure difference of oil filtration, the main maintenance of the unit's oil circuit system and circulating water cooling system was overhauled and maintained.From the maintenance situation, there are mainly the following problems:
1) the filter element of the oil and gas separator scales and blocks;
2) the oil filter is blocked;
3) the oil break valve fails and the valve core is stuck;
4) fault of temperature control valve is stuck;
5) serious fouling and blockage of the oil cooler.