- My Forums
- Tiger Rant
- LSU Recruiting
- SEC Rant
- Saints Talk
- Pelicans Talk
- More Sports Board
- Fantasy Sports
- Golf Board
- Soccer Board
- O-T Lounge
- Tech Board
- Home/Garden Board
- Outdoor Board
- Health/Fitness Board
- Movie/TV Board
- Book Board
- Music Board
- Political Talk
- Money Talk
- Fark Board
- Gaming Board
- Travel Board
- Food/Drink Board
- Ticket Exchange
- TD Help Board
Customize My Forums- View All Forums
- Show Left Links
- Topic Sort Options
- Trending Topics
- Recent Topics
- Active Topics
Started By
Message
1
Posted on 10/27/20 at 7:07 pm to td1
quote:
There is about a 75% chance those 25hz motors that drive the pumps are built way better than anything today. They are not the problem, it’s the crappy turbine that bit the dust.
That was the case presented after Katrina by one of the workers that maintain the pumps. The 100 year old motors and pumps rarely are the problem, it is the power source/ turbines and control systems.
Posted on 10/27/20 at 9:03 pm to BottomlandBrew
quote:
Those old motors can't be started with a modern smart system, so I'd argue they are part of the problem.
Without knowing anything about these particular motors, I find that incredibly hard to believe. What is so special about these motors that makes this so difficult?
Posted on 10/27/20 at 9:17 pm to Unobtanium
The older axial flow pumps aren’t necessarily complex machines...they’re electric motors driving a shaft with a fan/impeller on the end. Electric motors are inherently simpler than other motor varieties. These things were designed for efficiency and simplicity.
What makes it difficult, as many others have noted, is they run on 25hz power which must be specially generated or converted from standard frequency and therein lies the problem. The pump design itself is fine.
What makes it difficult, as many others have noted, is they run on 25hz power which must be specially generated or converted from standard frequency and therein lies the problem. The pump design itself is fine.
Posted on 10/27/20 at 9:24 pm to man in the stadium
I worked in the chemical industry for ~40 years, so I understand well the relationship between pumps and motors.
My specific question is why these pump motors can't be remotely started. Is it the pump (and maybe squirrely valving), the motor itself, the special gensets that drive the motor, or something else?
ETA - below is what I gather this system to look like:
GE gas turbine -> 25 Hertz generator -> 25 Hz motor -> BIG axial flow pump
Given the consequences, I would think there would a lot of incentive (and $$) to justify the work.
My specific question is why these pump motors can't be remotely started. Is it the pump (and maybe squirrely valving), the motor itself, the special gensets that drive the motor, or something else?
ETA - below is what I gather this system to look like:
GE gas turbine -> 25 Hertz generator -> 25 Hz motor -> BIG axial flow pump
Given the consequences, I would think there would a lot of incentive (and $$) to justify the work.
This post was edited on 10/27/20 at 9:29 pm
Page 3 of 3
Popular
Back to top
Follow TigerDroppings for LSU Football News