Orifice Plate Software
Orifice Plate Software
(OP)
Can anyone one suggest the name and the place to purchase software that calculate the following;
restriction orifice size (given known pressure drops)
Pressurre Drops in piepwork. Etc Etc.
I do a lot of mechanical commissioning work in the oil and gas industry and this would be very helpful to make quick calculations for verification purposes or,to calculate the orifice size if we find the flows and pressures are not as per spec.
restriction orifice size (given known pressure drops)
Pressurre Drops in piepwork. Etc Etc.
I do a lot of mechanical commissioning work in the oil and gas industry and this would be very helpful to make quick calculations for verification purposes or,to calculate the orifice size if we find the flows and pressures are not as per spec.





RE: Orifice Plate Software
RE: Orifice Plate Software
RE: Orifice Plate Software
RE: Orifice Plate Software
There is a specification, API 14.3 I believe, which addresses all the equations you need. You can basically size the orifice plate to a desired pressure drop, but you need to understand the physics of the flow, that is, have very accurate chemical make-up on the working fluid.
Otherwise you can use the thermodynamic tables, as I did, for some fluid representative of yours. You can get good approximations using incompressible flow, most of the time the stream velocity is less than sonic. Depending on your accuracy requirement, this may work for you.
Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada
RE: Orifice Plate Software
www.flowmaster.com
Telephone 01327 306046
Good luck
RE: Orifice Plate Software
I am trying to size a valve which feeds superheated steam into our vacuum tower. As may be expected the velocities are sonic, mach 1 and greater. I want to develop a backpressure using a restriction orifice. Can anyone post the equation to use for sizing this RO. We are seeking to push a large amount of steam into the tower (20,000lb/hr) because we recently upgraded our ejector system.
Thanks in advance!
RE: Orifice Plate Software
RE: Orifice Plate Software
I2I
RE: Orifice Plate Software
JLSeagull - thanks but my company does not have Instrument Toolkit and the website only has the Patch (Upgrade) available. I'll have to speak to my Fisher rep.
insult2injury - the main problem is with the exit velocity from the valve which our standards (GEMS) limits us to 0.3 mach.
Does anyone have the equations - i would really like to work it from first principles. I need to drop 30 psi across this RO and the outlet feeds into 4.7psia (vacuum).
RE: Orifice Plate Software
I2I
RE: Orifice Plate Software
RE: Orifice Plate Software
You can find it at http://www.control-soft.com
Ian McConnell
http://Triad-Measurement.com
RE: Orifice Plate Software
The software will predict the RO Cv , upstream and downstream pressures & noise across the plate.
Mitech also have a tortuos path globe valve with stacked disc for severe service applications.
CCI also do such valves but I dont know if their software is available in the market place.
RE: Orifice Plate Software
I2I
RE: Orifice Plate Software
I think you will find that the Fisher and Valtek trims are drilled cage types. These do not give the same velocity controlas a toruous path type valve. When used on turbine bypass or boiler drains the CCI, MItech and Copes Vulcan offer a bettter solution. I think that these are the only companies who offer a leak tight guarantee.
RE: Orifice Plate Software
Fisher (WisperFlo)
Valtek (TigerTooth and Stealth)
These are stacked disc not drilled cage trims; however, I do agree that I wouldn't put them in the same category as some of their competitor's trims for some severe services.
I2I
RE: Orifice Plate Software
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