xgiorg
Industrial
- Jun 10, 2008
- 37
Hi!
The last week we had a centrifugal water pump failure. The recirculation pump allows 10bar and 120C, bought on 2009. The system works with water at 4bar and 90C. After stopping the first pump, the reserve pump didn't started. After an hour they started and all was ok, but suddenly, after 1 minute more or less the pump burst. The system have security valves rated to 10bar, then it is impossible to have overpressure. I think the problem can be it exist an economizer before the pump, and during the stop water reached 150C without vaporizing. Does a 20 to 150C temperature transition can brake a pump? Also I checked the case wall thickness in different places and I found 5,5mm to 12mm variation. Is this allowable? We're I can find more info about it? I attach some pictures, thank you for your help.
The last week we had a centrifugal water pump failure. The recirculation pump allows 10bar and 120C, bought on 2009. The system works with water at 4bar and 90C. After stopping the first pump, the reserve pump didn't started. After an hour they started and all was ok, but suddenly, after 1 minute more or less the pump burst. The system have security valves rated to 10bar, then it is impossible to have overpressure. I think the problem can be it exist an economizer before the pump, and during the stop water reached 150C without vaporizing. Does a 20 to 150C temperature transition can brake a pump? Also I checked the case wall thickness in different places and I found 5,5mm to 12mm variation. Is this allowable? We're I can find more info about it? I attach some pictures, thank you for your help.