Acoustic cross-correlation flowmeter for solid-gas flow

Patent · Tue Jul 08 04:00:00 EDT 1986

OSTI ID:5455455

Sheen, S -H; Raptis, A C

This patent describes an apparatus for measuring particle velocity in a solid-gas flow within a pipe having a wall made of a material capable of propagating an ultrasonic signal therein consisting of: first and second transmitting transducers positioned at first and second locations, respectively, along the pipe the first and second transmitting transducers being directly connected to the wall of the pipe to develop first and second ultrasonic signals in the pipe wall the first and second ultrasonic signals being modulated by noise from particle impingement; an acoustic coupler, positioned between the first and second transmitting transducers, for acoustically isolating the first and second modulated ultrasonic signals from one another; first and second detecting transducers directly connected to the wall of the pipe for detecting the first and second modulated ultrasonic signals respectively and for generating first and second output signals respectively in response to the first and second detected modulated ultrasonic signals; and means for cross-correlating the first and second output signals.

• Assignee: Dept. of Energy, Washington, DC
• Patent Number(s): US 4598593
• OSTI ID: 5455455
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
ACOUSTICS
DESIGN
FLOW RATE
FLOWMETERS
FLUID FLOW
GAS FLOW
MEASURING INSTRUMENTS
METERING
METERS
MODULATION
NOISE
OPERATION
PARTICLES
PIPES
POSITIONING
PROBES
SIGNALS
SOLIDS FLOW
SONIC PROBES
SOUND WAVES
TRANSDUCERS
TWO-PHASE FLOW
ULTRASONIC WAVES