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Home > Forums > Mechanical Engineers > Activities > Pump engineering Forum

feed pump trip?(4)

Read More Threads Like This One

saadati (Mechanical)

2 Jan 12 10:53

Protection pressure feed pumps in power plants, because there? Feed pump output pressure is low because the trip?

JJPellin (Mechanical)

2 Jan 12 11:08

Please ask someone to help you reword the question. We cannot understand what you are asking.

Johnny Pellin

saadati (Mechanical)

2 Jan 12 12:14

In power plant why The main feed pump trip on low suction pressure?

steamdog (Chemical)

2 Jan 12 13:33

To prevent the pump to run dry - without any water in it.

bimr (Civil/Environmental)

2 Jan 12 14:42

Low pressure at the suction side of a pump can encounter the fluid to start boiling with

•reduced efficiency
•cavitation
•damage

of the pump as a result. Boiling starts when the pressure in the liquid is reduced to the vapor pressure of the fluid at the actual temperature.

http://www.engineeringtoolbox.com/npsh-net-positive-suction-head-d_634.html

Artisi (Mechanical)

3 Jan 12 6:42

The pump has been selected to run with correct suction pressure, any reduction of pressure can cause damage, therefore suction pressure is monitored and will trip if low.

or

suction pump run pressure correct to low trip for damage with

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.)

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