Air detector for liquid-filled sensing lines

Patent · Tue May 22 04:00:00 EDT 1990

OSTI ID:7089726

Schohl, G A; Vigander, S

This patent describes an active comparative standing wave frequency system eminently suitable for measuring and comparing the characteristics of a fluid static in or flowing through containment means, the containment means including first conduit means, and the measuring of characteristics including detecting inhomogeneities comprising air pockets, gas bubbles, or both in the fluid within the first conduit means. It comprises: void detection attachment means, the void detection attachment means comprising: second conduit means for containing a relatively small portion of fluid, the second conduit means operatively associated with the first conduit means; pressure transient inducing means operatively associated with the second conduit means; pressure response detecting means operatively associated with the second conduit means; and pressure response analyzer means coupled to receive the output from the pressure response detecting means.

• Assignee: Tennessee Valley Authority, Muscle Shoals, AL (USA)
• Patent Number(s): A; US 4926675
• Application Number: PPN: US 7-325277A
• OSTI ID: 7089726
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
033000* -- Natural Gas-- Properties & Composition
440800 -- Miscellaneous Instrumentation-- (1990-)
47 OTHER INSTRUMENTATION
BUBBLES
DATA ACQUISITION SYSTEMS
FLOWMETERS
FLUID FLOW
FLUID MECHANICS
GAS FLOW
HYDRAULICS
MEASURING INSTRUMENTS
MECHANICS
METERING
METERS
PIPES
PRESSURE GAGES
PRESSURE MEASUREMENT