Kirang11:
The illustration you supply is not one of your actual, installed compressor. It is a drawing from http://www.nord-lock...r-safe-bolting/showing the critical bolting supplied by a company called Nord-Lock Bolt Securing Systems.
Therefore, we don’t have any idea of how your compressor’s crosshead is designed and fabricated – and much less lubricated. Because of the lack of detailed, as-built drawings, operating manual, or photos we can only speculate as to what you have and how it should operate (and drain its oil) while undergoing lubrication.
Through the 54 years I worked as an engineer I operated and modified a lot of reciprocating compressors – more than I can remember. There are basically TWO lubrication methods used for lubricating a horizontal crosshead guide and pin: the splash method and the positive oil pressure method. I have used both and have favored the latter. I can only guess that you have the splash method in your machine. In any event, what you describe is serious and you should resolve the problem before continuing to operate the compressor.
All crosshead pieces are enclosed and you don’t tell us how it is that you know the lubrication oil is being dammed up on the head end of the crosshead piece, without draining back into the crankcase where it belongs. Please explain. In all horizontal compressors the crosshead piece drains all oil back into the main crankcase – by gravity from both the crank and the head end. There must exist a channel or connection inside the crosshead piece that drains the head end of oil. Please describe it. You should have a detailed drawing of your compressor and an operating + maintenance manual that fully describes the entire lubrication system and how it works. Refer to the attached document that explains the basics of the lubrication system for a typical crosshead assembly.
Be specific. WHICH compressor bearing is running hot and how do you know this? Reciprocating compressors don’t have bearing thermometers installed into all bearings except in very special applications. Do you have such an installation?
Await reply.
Recip Compressor Crosshead Lubrication.docx 1.17MB
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