SU488983A1 - Ultrasonic single-channel phase non-commutation flow measurement method - Google Patents
Ultrasonic single-channel phase non-commutation flow measurement methodInfo
- Publication number
- SU488983A1 SU488983A1 SU1977580A SU1977580A SU488983A1 SU 488983 A1 SU488983 A1 SU 488983A1 SU 1977580 A SU1977580 A SU 1977580A SU 1977580 A SU1977580 A SU 1977580A SU 488983 A1 SU488983 A1 SU 488983A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- flow measurement
- measurement method
- channel phase
- phase non
- ultrasonic single
- Prior art date
Links
Description
1one
Изобретение касаетс измерени расхода с помощью ультразвука и может приме- м тьс , нанример.в химической промышлен- ности.The invention relates to flow measurement using ultrasound and can be applied, for example, in the chemical industry.
Известен ультразвуковой одноканальныи фазовый бескоммутационный способ измерени расхода, основанный на встречной посылке по акустическому каналу непрерьгеных разночастотных колебаний и определении разности фаз прин тых сигналов. The ultrasonic single-channel phase commutation-free flow measurement method is known, based on the reciprocal sending of uninterrupted different-frequency oscillations through the acoustic channel and determining the phase difference of the received signals.
Известный способ предъ вл ет специальные требовани к характеристикам преобразователей , в противном случае по вл етс дополнительна погрешность от дестабилизирующих факторов, поскольку первичный преобразователь расхода подвержен их наиболее концентрированному воздействию.The known method imposes special requirements on the characteristics of the transducers, otherwise additional error due to destabilizing factors appears, since the primary flow transducer is subject to their most concentrated effect.
Цель изобретени - повышение точности измерени расхода.The purpose of the invention is to improve the accuracy of flow measurement.
Дл этого по предлагаемому способу по одному акустическому каналу в одном на , правлении посылают колебани на двух симметричных составл ющих основной частоты, а в другом направлении - колебани основной частоты, выдел ют на выходе обоих To do this, according to the proposed method, one acoustic channel in one direction sends oscillations on two symmetric components of the fundamental frequency, and in the other direction oscillations of the basic frequency, are extracted at the output of both
направлений вторую гармонику основной частоты и определ ют дл них разность фаз, по которой суд т о величине расхода.the directions of the second harmonic of the fundamental frequency and determine for them the phase difference, by which the flow rate is judged.
На чертеже приведена блок-схема устройства , реализующего предлагаемый способ измерени расхода.The drawing shows a block diagram of a device implementing the proposed flow measurement method.
Устройство содержит дуплексную пару излучатель-приемник 1 и 2, генератор 3 основной частоты колебаний частотой OQ, вспомогательный генератор 4 частотой ЮThe device contains a duplex pair of emitter-receiver 1 and 2, the generator 3 of the fundamental frequency of oscillation frequency OQ, the auxiliary generator 4 frequency U
балансный модул тор 5, фильтры 6, 7 и 8 balanced modulator 5, filters 6, 7 and 8
СО,) на частоты ( ОО + СО ), ( СО - СО , ) иWITH,) on frequencies (OO + WITH), (WITH - WITH,) and
ОО соответственно, смеситель 9 частотOO, respectively, 9 frequency mixer
со ), удвоитель ча , (co), doubler cha, (
00
ОABOUT
стоты 10, фазометр 11.stati 10 phase meter 11.
Устройство работает следующим образам .The device works as follows.
Генератор 3 возбуждает пьезопреобразователь 2, и акустические волны этой частоты распростран ютс , например, против потока жидкости. Сигналы этого генератора поступают одновременно на один из входов балансного модул тора 5. На друThe generator 3 excites the piezoelectric transducer 2, and the acoustic waves of this frequency propagate, for example, against the liquid flow. The signals of this generator are received simultaneously to one of the inputs of the balanced modulator 5. At the other
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1977580A SU488983A1 (en) | 1973-12-21 | 1973-12-21 | Ultrasonic single-channel phase non-commutation flow measurement method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1977580A SU488983A1 (en) | 1973-12-21 | 1973-12-21 | Ultrasonic single-channel phase non-commutation flow measurement method |
Publications (1)
Publication Number | Publication Date |
---|---|
SU488983A1 true SU488983A1 (en) | 1975-10-25 |
Family
ID=20569914
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1977580A SU488983A1 (en) | 1973-12-21 | 1973-12-21 | Ultrasonic single-channel phase non-commutation flow measurement method |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU488983A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4787240A (en) * | 1987-08-31 | 1988-11-29 | Westinghouse Electric Corp. | Liquid measurement arrangement |
-
1973
- 1973-12-21 SU SU1977580A patent/SU488983A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4787240A (en) * | 1987-08-31 | 1988-11-29 | Westinghouse Electric Corp. | Liquid measurement arrangement |
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