The auxiliary oil pump of the reciprocating compressor will not stop
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After the compressor starts operating, the main oil pump turns on, but the auxiliary oil pump fails to stop. Could anyone tell me what the reason for this is? How to solve it? Thank you
What is the lubricating oil pressure? Check the chain; have the electrical team investigate whether it’s an electrical issue!
The main oil pump is likely to fail to deliver sufficient flow – can this be resolved by venting? At what pressure should the self-protection setting of the auxiliary oil pump be set to cause it to stop operating? This feature needs to be enabled. These are the two common ones
I also suspect a problem with the main oil pump, but the setting is to stop the auxiliary oil pump at 3 kilograms of pressure; since the current pressure is higher than this value, it should stop already
By saying you can’t stop it, do you mean it can’t be stopped automatically or manually?
I’m not aware of the specific situation on your end, but I hope the following points can help: 1. Check whether the interlock system is in operation; if not, activate it. 2. Examine the DCS remote pressure reading – ensure that there is no air in the pressure sensor’s tubing, as this can cause low remote pressure readings; have a technician calibrate the sensor and check the interlock logic. 3. The main oil pump may not be delivering sufficient flow due to excessive clearance, air in the pipes, or a high pressure difference across the filter. 4. The relief valve or pressure reducing valve might be set to too low a pressure level. 5. There could be an electrical fault
This post was last edited by hxlhb on 2017-3-20 08:02. The analysis on floor 7 is very comprehensive; the original poster can refer to it. But it’s impossible ； The pressure setting of the relief valve or pressure regulator is too low. Regarding the issue, if it’s a problem with the relief valve or pressure regulator setting being too low, the auxiliary oil pump will keep running as long as the pressure in the lubrication system does not reach the set value; it cannot stop automatically. It seems that the lubrication system can now achieve the desired pressure.
Some compressors need to be stopped manually, right?
I have previously worked with compressors whose auxiliary oil pumps are stopped manually