What causes unstable power oil pressure in steam turbines?
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Also, the reason why the piston rod of a reciprocating compressor is oily
The piston rod is oily; there must be a problem with the oil scrapper ring.
1. Regarding the issue of unstable oil pressure in the turbine control oil (power oil): ① First, check whether the pressure in the accumulator bladder of the control oil system is insufficient ② Secondly, check whether the function of the oil pressure control valve is normal? ③ Other inspections: Check whether the three-valve assembly of the lubricating oil system is functioning properly, whether the filters in the oil system are clogged, and whether the outlet pressure of the lubricating oil pump is stable, etc. 2. Regarding the oiling issue on the piston rod of reciprocating compressors, I agree with what was said in point 3#; check whether the wiper ring is worn out.
What was said on the 3rd floor is correct; also, check if there are any issues in the chamber where the piston rod operates
It is normal for the oil-scraping ring to have some leakage; it is necessary to monitor this situation and regularly drain the oil from the discharge port at the bottom of the intermediate chamber. Usually, after maintenance and replacement, performance improves after using it for a while. Additionally, an intermediate filler is usually installed in the middle of the sleeve (behind the oil scrapper) as well, to prevent lubricating oil from entering the cylinder.