Vertical Turbine Pumps
Vertical Turbine Pumps
(OP)
Anyone famililar with Vertical turbine water flush application with an enclosing tube?
I am trying to get information as to the design and operation.
I am familiar with Oil lube, however I was told I needed S.S. lineshaft for water-flush (which seems reasonable) and that I will need pressurized water into the tension bearing for lubrication. What kind of pressure at what volume?
I am trying to get information as to the design and operation.
I am familiar with Oil lube, however I was told I needed S.S. lineshaft for water-flush (which seems reasonable) and that I will need pressurized water into the tension bearing for lubrication. What kind of pressure at what volume?





RE: Vertical Turbine Pumps
Why not ask the pump supplier / manufacturer ??? for their guidance .
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: Vertical Turbine Pumps
API 682/ISO 21049 standards have default (required) connections and connection symbols for seal chamber and gland plate connections based upon the seal configuration.
RE: Vertical Turbine Pumps
Johnny Pellin
RE: Vertical Turbine Pumps
The info given by the OP at this stage is too limited to make any meaningful recommendations
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: Vertical Turbine Pumps
If memory serves, the shaft is 416ss, and the bearings are bronze.
I don't know if I have any info on required flush volume/pressure, I'll see what I can find. After some more coffee.
RE: Vertical Turbine Pumps
RE: Vertical Turbine Pumps
Thank you an information you may have would be great.
RE: Vertical Turbine Pumps
Johnny Pellin
RE: Vertical Turbine Pumps
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: Vertical Turbine Pumps
If your pump discharge pressure is greater than the enclosing tube pressure (likely) you may need:
* a throttle bushing and flush ports to discharge the flush water into the pit/well (this keeps pumped product from entering enclosing tube) OR
* a balanced impeller (for single stage) so that flush water can discharge into the pump on the backside of the impeller OR
* some other way to discharge the flush water
If you have a tail bearing, you may need some tubing or a rifle-drilled shaft to provide water flush.
For operation: I recommend flush water flow meters and pressure gauges. Obviously establish flush water flow before starting pump.
RE: Vertical Turbine Pumps
The fact is that Water-Flush enclosed tube applications are becomming more in use because of contamination issues with the oil in contact with water.
JJ, I am surprised that you set open lineshafts water lube V.T as deep as you do, I would not reccomend it past 200' because of the pre-lube issues, however if you pre-lube for 15 mins. before you start it must be O.K. however most people would not have that kind of dedication and I would be replacing pumps left and right.
I was trying to get feed back on other types of systems out there.
Typically a water-flush V.T deepwell pump uses the same equipment as oil lube except the lineshaft is S.S. instead of 1045 and the bearing grooves are bord a little deeper to allow water to flow more freely from .125" to .188" deep grooves cut. Also water should be injetted into the tube through the existing tension bearing at a pressure of 10-15psi.
This is the system we are currently using.
Thank you