Measuring and testing – Volume or rate of flow – Of selected fluid mixture component
Patent
1994-03-08
1994-12-06
Chilcot, Jr., Richard E.
Measuring and testing
Volume or rate of flow
Of selected fluid mixture component
7386128, G01F 174, G01F 166
Patent
active
053699980
ABSTRACT:
Method and apparatus (1) for measuring the mass flow rate of solids suspended in a gas stream (2) flowing along a pipe (3). Two ultrasonic transducers (4, 5) are mounted in short side arms (6, 7) extending from the pipe. The transducers are arranged such that signals are transmitted from one to the other through the gas stream at an angle .THETA., usually about 45.degree.. The received signals in both transducers are received by apparatus (8) and amplified. The invention allows determination of: the mean times for the ultrasonic pulses to travel from one transducer (4) to another (5) and vice-versa; the mean peak amplitude of received pulses; and, the standard deviation or spread of these parameters. The mean times taken for the ultrasonic signals to travel between the transducers are used to determine the gas flow velocity, and the mean peak amplitudes for calculating the solids loading. From these the mass flow rate is derived. The invention is applicable to determining mass flow rates of pulverised coal contained in an air flow in a large power station.
REFERENCES:
patent: 4545244 (1985-10-01), Yasuda et al.
patent: 4581942 (1986-04-01), Ogura et al.
patent: 4726235 (1988-02-01), Leffert et al.
patent: 4882934 (1989-11-01), Leffert et al.
Patent Abstracts of Japan, E-77, p. 4782, JP A 52-50784; Hokushin Denki Seisakusho K.K., 23 Apr. 1977.
Lynnworth, "Ultrasonic Flowmeters", Trans. Inst. M C, vol. 3, No. 4, 1981, pp. 217-223.
Chilcot Jr. Richard E.
Commonwealth Scientific and Industrial Research Organisation
Oen William L.
LandOfFree
Ultrasonic mass flow meter for solids suspended in a gas stream does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ultrasonic mass flow meter for solids suspended in a gas stream, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrasonic mass flow meter for solids suspended in a gas stream will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-206956