Information to put into a pump class
Information to put into a pump class
(OP)
Hello all,
I am writing up a powerpoint/class for our operations department here at our terminal. I will be covering the very basics of positive displacement and centrifugal pumps, hydraulics, and troubleshooting. I was looking on here for some literature to browse and use in my presentation and class. I found one thread that looked like it seemed like the perfect answer, http://www.eng-tips.com/viewthread.cfm?qid=329781. It is missing a file that supposedly answered many common questions about pumps. Can anyone reupload this file so that I can touch on pump information that relates to a lot of common questions, especially from people who are operating the pumps.
In short, I'd like to let our pump operators know WHY they are running pumps certain ways, instead of just WHAT a pump is. I feel this will be vital to understanding and being interested in the topic.
Any information to help this along would surely help. And if the powerpoint would be helpful to anyone else, I could always upload it after.
Thank you,
I am writing up a powerpoint/class for our operations department here at our terminal. I will be covering the very basics of positive displacement and centrifugal pumps, hydraulics, and troubleshooting. I was looking on here for some literature to browse and use in my presentation and class. I found one thread that looked like it seemed like the perfect answer, http://www.eng-tips.com/viewthread.cfm?qid=329781. It is missing a file that supposedly answered many common questions about pumps. Can anyone reupload this file so that I can touch on pump information that relates to a lot of common questions, especially from people who are operating the pumps.
In short, I'd like to let our pump operators know WHY they are running pumps certain ways, instead of just WHAT a pump is. I feel this will be vital to understanding and being interested in the topic.
Any information to help this along would surely help. And if the powerpoint would be helpful to anyone else, I could always upload it after.
Thank you,





RE: Information to put into a pump class
RE: Information to put into a pump class
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: Information to put into a pump class
and http://www.pumps.org/Pump_Fundamentals.aspx
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Information to put into a pump class
Thank you all for the replies, I will start looking at these links!
RE: Information to put into a pump class
PD pumps tend to be fairly robust, but clearly operating out of range or dirty fluid will do you no good.
Loss of inlet pressure, running dry, running against a closed head are to be avoided.
In many cases when something goes wrong, it's often not the pump, it's the system around it / how you operate it.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Information to put into a pump class
Thanks, as usual, LittleInch for the consistent responses on this forum.
RE: Information to put into a pump class
Many people think if you have a pump doing 400 X/hr then you add two more in parallel you'll get 1200 X/hr.
Of course for PD pumps that is what happens, but then pressure will vary to meet the resistance to flow, be it height, friction or the pressure of whatever is on the end of the pipe.
For all intents and purposes centrifugal pumps are constant pressure devices (in a 20% band) and PD pumps are constant flow devices, in a 10% band.
If they get that then you'll have made progress.
Then talk about inlet pressure, cavitation, pulsation, low flow, high flow etc
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Information to put into a pump class
http://www.pumpschool.com/
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.