Method of reducing system pressure pulsation for positive displacement pumps
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 23, 2003
Grant Date -
N/A
app pub date -
Feb 8, 2002
filing date -
Feb 9, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An improved method and apparatus for reducing pressure pulsation when pumping fluids having highly entrained gas therein. The pump has a drive screw and a pair of idler screws. The screws are placed in a screw channel between a suction end and a discharge end. At least one of the clearances between the surfaces of the drive screw, side screw and screw channel is larger in area, from the discharge end to the suction end, than the remaining clearances. The area of the clearance is configured so that sufficient slip flow occurs between the discharge and suction ends to compress the entrained gas in a uniform and controlled fashion so that linear compression occurs throughout the flow path in the pump. Preferably, the clearance is achieved by reducing the outer diameter of the drive screw.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully