What causes the high oil temperature in the compressor?
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This post was last edited by security on 2011-6-19 at 19:21. With the piston compressor, it shut down due to low oil pressure on two occasions; after it was restarted and operated for some time, a large amount of oil fumes were observed coming from the crankcase breather valve. The machine stopped operating after a short while; it was found that the piston rings were damaged and the shaft was being scraped. What causes the high oil temperature? The circulating water is controlled by a temperature control valve; after replacing the piston rings, the oil temperature remained high, so it was disassembled again and the shaft was cleaned. As a supplementary note: the intake pressure fluctuates significantly.
Has the effectiveness of oil cooling been checked?
Reply to 2# *ng*ng0603: It can cool down.
Reply 1# security: The main reasons for high compressor oil temperature are: 1. Overheating of moving parts. 2 Insufficient lubricant level. 3 The cooling water pressure of the oil cooler is low. As for the two instances of shutdown due to low oil pressure you mentioned, it should be a problem with the oil circulation system. Issues such as oil leaks in the oil pipelines, clogged oil filters, oil leaks from the crankcase, and excessive wear of the bearing shells can all cause the oil pressure to drop to the point that the system shuts down automatically. High oil temperature has nothing to do with the piston rings.
There are many reasons for excessively high oil temperatures, but the main ones are as follows: 1. Poor cooling efficiency of the cooler； In other words, the cooler failed to lower the oil temperature, causing it to rise higher and higher during circulation. Check the water pressure and flow rate. II. The clearances of each bearing shell are too small ； The heat generated by friction is significant, and the temperature will be high in the temperate zone. Check the clearances of the bearing shells, big-end bearings, sliding sleeves, and crossheads. III. Insufficient oil level ； The oil transfer pipeline has pressure relief points, or there is excessive resistance and blockages, etc ； Check the oil lines and filters. IV. Deterioration of oil quality ； The quality of the oil may change after being exposed to high temperatures, or there may be issues with the oil’s quality from the start ； Such problems can occur in all cases. Oil analysis.
This post was last edited by hxlhb on 2011-6-18 at 16:29. The machine stopped operating due to low oil pressure twice, yet you started it up without checking the oil circuit – aren’t you just asking for the bearing shells to burn out? It’s good enough that the machine isn’t damaged just from not being turned on! ! ! ! ! ! What is the relationship between piston rings and oil temperature and pressure? ! ! ! Check the oil circuit! ! ! ! !
Reply to 6# hxlhb: The hydraulic pressure suddenly dropped, but the operation has been normal otherwise.
Reply to 7# security: The hydraulic pressure suddenly dropped. Personal opinion: My first impression is that there is severe leakage of lubricant. 2 Main oil pump failure. Three people accidentally operated the pressure regulating valve. 4 The pressure regulating valve failed due to excessive unit vibration. 5 Instrument oil pressure interlock failure.
One more thing: have you cleaned the oil filter during your major repairs?
Reply to 1# security: The high oil temperature you mentioned could be due to: 1. Poor quality of the oil. 2. The cooling effect is poor. 3. The oil filter has not been cleaned for a long time. 4 The compressor is under excessive load and the ambient temperature is high
Reply to 7# security: The hydraulic pressure has suddenly dropped; it’s likely that the oil filter is clogged. Clean the filter element and check it. Also, there are too many impurities in the oil; it’s time to change it!