SU488983A1 - Ultrasonic single-channel phase non-commutation flow measurement method - Google Patents

Ultrasonic single-channel phase non-commutation flow measurement method

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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
Application number
SU1977580A
Other languages
Russian (ru)
Inventor
Юрий Георгиевич Беров
Original Assignee
Предприятие П/Я А-3759
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Предприятие П/Я А-3759 filed Critical Предприятие П/Я А-3759
Priority to SU1977580A priority Critical patent/SU488983A1/en
Application granted granted Critical
Publication of SU488983A1 publication Critical patent/SU488983A1/en

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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

SU1977580A 1973-12-21 1973-12-21 Ultrasonic single-channel phase non-commutation flow measurement method SU488983A1 (en)

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

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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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4787240A (en) * 1987-08-31 1988-11-29 Westinghouse Electric Corp. Liquid measurement arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
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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