good day, I am a marine engineer
good day, I am a marine engineer
(OP)
good day,
I am a marine engineer by profession and I wish to hear your opinion.
My vessel sometimes sails on rivers and as a result of muddy water being sucked by my pumps, there are incidents that the mechanical seal wears and my pump starts leaking. I have been reading posts about flushing and I just want to be sure if modifying the line arrangements by introducing distilled water for flushing the stuffing box would really work. As I have read, stuffing box pressure is slightly higher than the suction pressure and introducing a flushing liquid( which is 1 bar higher at 4-8L per hour) would keep the mud from reaching my mechanical seals.
Attached is my pump drawing. I hope you can shed me more enlightenment.
9-:
I am a marine engineer by profession and I wish to hear your opinion.
My vessel sometimes sails on rivers and as a result of muddy water being sucked by my pumps, there are incidents that the mechanical seal wears and my pump starts leaking. I have been reading posts about flushing and I just want to be sure if modifying the line arrangements by introducing distilled water for flushing the stuffing box would really work. As I have read, stuffing box pressure is slightly higher than the suction pressure and introducing a flushing liquid( which is 1 bar higher at 4-8L per hour) would keep the mud from reaching my mechanical seals.
Attached is my pump drawing. I hope you can shed me more enlightenment.
9-:





RE: good day, I am a marine engineer
RE: good day, I am a marine engineer
In this case the flush water could be poor quality (when in the river) but packed gland with flush water cleaning cyclone prior to the stuffing box would be my suggestion.
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
RE: good day, I am a marine engineer
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
RE: good day, I am a marine engineer
dirty silty water is an issue and for those situations getting clean water to your seal flushes isn't easy even using cyclones on the seal lines or fine filters (which then block up).
You really need to find out which seals you have installed and go onto the seal vendors website or call one of the tech engineers there to get the full information you need on pressures, flows etc.
I'm not sure what the mysterious O ring is doing for you (item 110) - seems to be in the middle of no where.
Clean water ( distilled is a bit OTT) would be better as the seal line also lubricates and flushes the bottom bearing.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: good day, I am a marine engineer
RE: good day, I am a marine engineer
RE: good day, I am a marine engineer
RE: good day, I am a marine engineer
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)