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Vertical Centrifugal Pumps.....
- Thread starter chem98
- Start date
Montemayor
Chemical
chem98:
Your query is too general to answer with specifics. What type of pump do you mean within the grouping of "vertical centrifugal pumps"?
1) Verical deepwell, with extended shaft?
2) Vertical, inline centrifugal pump?
3) Vertical, submersible pump & motor?
4) Vertical, multi-stage & turbine pump?
What do you mean by the TDH required? The TDH is produced, not "required". The NPSHr is "required". Is that what you mean? Or do you mean that you want to know the TDH (Total Developed Head) limits of a vertical type pump?
Capacity can be anything you specify within reason. Look it up in any convenient pump catalog - like Goulds' GPM catalog. If you have reservations about the quality of the fluid you want to pump, discuss this with your pump supplier and/or look in the pump catalog. I've pumped water, LNG, crude oil, diatomaceous earth slurry, and a variety of other fluids with vertical pumps - so I can tell you the variety is large.
Please be more specific in the actual operation. If the query is based on fiction or is academic, state this so respondents can understand that there is no actual application. The quality of the response can only be as good as the quality of the basic data.
Art Montemayor
Spring, TX
Your query is too general to answer with specifics. What type of pump do you mean within the grouping of "vertical centrifugal pumps"?
1) Verical deepwell, with extended shaft?
2) Vertical, inline centrifugal pump?
3) Vertical, submersible pump & motor?
4) Vertical, multi-stage & turbine pump?
What do you mean by the TDH required? The TDH is produced, not "required". The NPSHr is "required". Is that what you mean? Or do you mean that you want to know the TDH (Total Developed Head) limits of a vertical type pump?
Capacity can be anything you specify within reason. Look it up in any convenient pump catalog - like Goulds' GPM catalog. If you have reservations about the quality of the fluid you want to pump, discuss this with your pump supplier and/or look in the pump catalog. I've pumped water, LNG, crude oil, diatomaceous earth slurry, and a variety of other fluids with vertical pumps - so I can tell you the variety is large.
Please be more specific in the actual operation. If the query is based on fiction or is academic, state this so respondents can understand that there is no actual application. The quality of the response can only be as good as the quality of the basic data.
Art Montemayor
Spring, TX
Vertical centrifugals come in many sizes.
One major advantage is that the wet end can be submerged and the dry end (motor) can remain dry. This avoids any priming problems and removes the possibility of suction side leaks.
Verticals are better suited to absorbing deadweight loads and their smaller footprint often makes the associated civil works less expensive.
They may be a little better suited for high specific speeds (large flow compared to head, but this is open to debate.
The list goes on and on........
On the con side, they can be expensive, are more difficult to work on in situ, and they often require outrigger bearings that cam be troublesome in some circumstances.
Its a horses for courses thing.
Cheers
Steve
One major advantage is that the wet end can be submerged and the dry end (motor) can remain dry. This avoids any priming problems and removes the possibility of suction side leaks.
Verticals are better suited to absorbing deadweight loads and their smaller footprint often makes the associated civil works less expensive.
They may be a little better suited for high specific speeds (large flow compared to head, but this is open to debate.
The list goes on and on........
On the con side, they can be expensive, are more difficult to work on in situ, and they often require outrigger bearings that cam be troublesome in some circumstances.
Its a horses for courses thing.
Cheers
Steve
- Thread starter
- #5
Thanks a lot to all of u. 
Well, this query was to my own grooming. I am quite impressed by more than satisfactory answers of u people. In past few months (offcourse since i had explored this very useful site) i had checked numerous querries of my interest several times before they get replied. Well I believe that this site is a great online university which combines theoratical & practical knowledge coupled with a huge bunch of experience.
Respected Montemayor & rmw, Its nature that one wish the satisfacory reply of his qurey from those people about whom he thinks that they are competent in the asked thing. Isn't it so??? So please find deep scence of admiration in my queries (yes of future too) for u people.
smckennz, Thanks a lot .... A very thankful smile dedicated to u...
Well, this query was to my own grooming. I am quite impressed by more than satisfactory answers of u people. In past few months (offcourse since i had explored this very useful site) i had checked numerous querries of my interest several times before they get replied. Well I believe that this site is a great online university which combines theoratical & practical knowledge coupled with a huge bunch of experience.
Respected Montemayor & rmw, Its nature that one wish the satisfacory reply of his qurey from those people about whom he thinks that they are competent in the asked thing. Isn't it so??? So please find deep scence of admiration in my queries (yes of future too) for u people.
smckennz, Thanks a lot .... A very thankful smile dedicated to u...
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