Mechanical Seals for Zero Leakage

Written by Thomas Yoon


Continued from page 1

Stationary Component

The stationary ring is usually made of stainless steel, although there are some made of ceramic or similar hard materials. The axial surface is also highly polished. Atrepparttar circumference of repparttar 133423 stationary piece, a rubber o-ring will be installed to seal against water leak throughrepparttar 133424 pump housing.

Spring

The spring(s) is installed aroundrepparttar 133425 shaft and rotates withrepparttar 133426 rotating component. The purpose ofrepparttar 133427 spring is to pressrepparttar 133428 rotating component ofrepparttar 133429 mechanical seal againstrepparttar 133430 stationary component so thatrepparttar 133431 matching surfaces are in contact with each other axially torepparttar 133432 shaft.

Becauserepparttar 133433 axial rubbing surfaces in contact are very highly polished, there is almost no leak there. Water does not leak throughrepparttar 133434 pump housing opening because ofrepparttar 133435 o-ring pressed betweenrepparttar 133436 stationary component andrepparttar 133437 pump housing. Water will also not leak throughrepparttar 133438 shaft because ofrepparttar 133439 o-ring inrepparttar 133440 rotating component gripping againstrepparttar 133441 shaft.

So, if there is a leak in a mechanical seal of a pump, look for repparttar 133442 sources of leak in those 3 places. Surely one of them is not sealing properly.

For more information on mechanical seals and pump troubleshooting, downloadrepparttar 133443 free software from Pump Troubleshooter

Many years of working experience in Marine, Facilities, Construction has given the author material for writing e-books and articles related to engineering, and management. Subscribe to facworld ezine More information at Marine and M & E


Simple But Powerful Centrifugal Chillers

Written by Thomas Yoon


Continued from page 1

The lubrication ofrepparttar shaft bearings must be done within repparttar 133422 chiller itself. Oil passages and shaft driven pumps (with motor driven pumps at startup) is made for lubrication.

The oil will find their way torepparttar 133423 condenser and has to be extracted back torepparttar 133424 lubrication system. Usually there will be an eductor system to suck backrepparttar 133425 oil torepparttar 133426 oil sump.

Centrifugal chillers are usually designed for low-pressure refrigerant like R-123a.

These chillers sometimes surge when running, and they are very sensitive to sudden changes in loads. Therefore modern centrifugal chillers make use of electronic microprocessors to controlrepparttar 133427 various parameters and timing in order to run smoothly.

Indeed, when everything is perfect,repparttar 133428 centrifugal chiller is capable of extremely smooth operation.

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Many years of working experience in Marine, Facilities, Construction has given the author material for writing e-books and articles related to engineering, and management. Subscribe to facworld ezine More information at Marine and M & E


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