Abstract. The
results of works on the use of the waveguide-dielectric method for monitoring
and investigation of highly absorbing liquids with the help of thin
polyethylene capillary in a metal waveguide are proposed. The method is based
on the features of the passage of a waveguide H10-wave through a
waveguide-capillary resonator. The capillary was filled with a highly absorbing
liquid and is located in a single-mode waveguide parallel to its narrow walls
and in the middle of a wide wall (in the region of the maximum of the electric
field of the H10 wave). There is a theoretical confirmation of the
experimentally detected optimal capillary size with the most pronounced
resonant absorption maximum of microwave radiation in the measuring chamber. A
new design of a tunable waveguide microwave resonator intended to be used in
systems of measuring dielectric parameters of highly absorbing liquids is
proposed. The resonator design provides adjustment of the connection with the
object of measurement and high stability of the measurement results. The
concentration of water in the hydrocarbon mixtures (ethanol,
methanol, diethylene glycol) was measured. A
new method for controlling the content of a substance in a liquid mixture was
developed. The method is based on measuring the dependence of the absorption of
microwave radiation on the temperature of the mixture. This method discovers
new possibilities of measuring the concentration of water in liquid mixtures. A constructive improvement of the resonance
measuring chamber was carried out. This made it possible to ensure the maximum
quality factor of the resonator for each concentration of matter in the liquid
being studied and to increase the sensitivity of measurements of the dielectric
parameters of the liquid. The results of this work can be used in the oil and
gas industry, pharmaceutical and food industries, in biomedical research. The
results of the research have been reported at VII
International Congress "Low and Superlow Fields and Radiations in Biology
and Medicine".
Key words:
ultrahigh frequencies (microwave frequencies), extremely high frequencies
(EHF), centimeter and millimeter waves, dielectric constant, absorption
coefficient, aqueous solutions, hydrocarbon mixtures, water content monitoring,
waveguide dielectric resonance, waveguide chamber.
References
1. Pathig R. “Dielectric and electronic
properties of biological materials”. Chichester: John Wiley & Sons. 1979.
279 p.
2. Aksenov S.I. Voda i eyo rol v
regulyatsii biologicheskikh protsessov. [The water and its role in the regulation
of biological processes]. Moscow. Nauka Publ. 2004. 212 pp. (In
Russian)
3. Hasted J.B. Liquid water: Dielectric
properties. Water. A comprehensive treatise. Ed. Frank F. 1972. V. 1. N.Y.:
Plenum Press. P. 255-309.
4. Brandt A.A. Issledovaniya
dielektrikov na sverkhvysokikh chastotakh. [Studies of dielectrics of
ultrahigh frequencies]. Moscow. Fizmatlit Publ. 1963. 403 pp. (In
Russian)
5. Gvozdover S.D. Teoriya
elektronnykh priborov sverkhvysokikh chastot. [The theory of electronic
devices of ultrahigh frequencies.] 1956. Moscow, Gostekhizdat Publ., 527 c. (In
Russian)
6. Khrapko A.M, Gaiduk V.I, Bakaushina
G.F Waveguide and quasi-optical devices for measuring the absorption of
microwave radiation in organic liquids. Elektronnaya Tekhnika. Elektronika
SVCH. [Electronics Engineering. Microwave Electronics]. 1976. Is. 10. P.
69-78. (In Russian)
7. Mukhtarov RG Waveguide measuring
cells for microwave moisture meters of liquid materials. Elektronnaya
Tekhnika. Elektronika SVCH. [Electronics Engineering. Microwave Electronics].
1991. Is. 7. P. 45-48. (In
Russian)
8. Kazarinov K.D., Polnikov I.G., Gorodezkaya
M.V. The use of a waveguide dielectric method for the control and investigation
of highly absorbing liquids in the microwave range. Elektronnaya Tekhnika.
Elektronika SVCH. [Electronics Engineering. Microwave Electronics]. 2014.
Is. 1. P. 82-94.
9. Olshansky D.I, Lyubimov Yu.A.,
Khurgin Yu.I. The influence of water heating in measurements of EHF absorption.
Millimetrovye volny v biologii i meditsine. [Millimeter waves in
medicine and biology: Digest of Papers]. Moscow, IRE RAS. 1995. P. 217-218. (In
Russian)
10. Belyakov E.V. Tunable microwave
resonator for measuring absorbing liquids. Elektronnaya Tekhnika.
Elektronika SVCH. [Electronics Engineering. Microwave Electronics]. 1989.
Issue. 10 (424). C. 59-61. (In
Russian)
11. Methodical instructions No. 332 for
the preparation and certification of exemplary synthetic samples (emulsions)
for testing and calibrating moisture meters for oil. Moscow, Standards Publishing,
1974. (In Russian)
12. Kazarinov K.D, Polnikov I.G. Tunable
waveguide-dielectric chamber for controlling liquids. Date of state.
registration in the State. The Register of Inventions of the Russian Federation
on March 22, 2017. Bul. No. 9. Application Date 16.11.2015. Patent No. 2614047.
(In Russian)
13. Abrosimov V.K, Krestov A.G, Alper
G.A. et al. Dostigeniya i problemmy teorii solvatatsii:
strukturno-termodinamicheskie aspekty. [Achievements and problems of the
theory of solvation: structural-thermodynamic aspects. Moscow, Nauka Publ.,
1998. 247 p. (In
Russian)
14. BP (British Petroleum CO LTD).
Measurement of water content of liquids using microwave. Date awarded 24. 03.
1980, Application Date 24. 03. 79. Patent Number
GB 7910431.
15. Chamberlain J.E. et al.
Submillimetre absorption and dispersion of liquid water. Nature.
1966. V. 210, N5038. P. 1003.
16. Kazarinov K.D, Polnikov I.G. Method
for measuring the concentration of aqueous solutions. Date of state
registration in the State Register of Inventions of the Russian Federation is 21.09.2017.
Bul. No. 27. Application Date 29.08.2016. Patent
No 2631340. (In Russian)
17. Kazarinov K.D, Tikhonova E.A,
Solosin V.S. "Waveguide device for measuring the parameters of
liquids". Date of state registration in the State Register of Inventions
of the Russian Federation is May 23, 2018. Bul. No. 15. Application Date
04.04.2017. Patent No 2655028. (In
Russian)
18. Kazarinov K.D,
Tikhonova E.A, Solosin V.S Using EMR microwave range for measuring the parameters
of liquids. Pervaya
Vserossiiskaya konferentsiya c megdunarodnym uchastiem “Fisika i ekologiya
electromagnitnykh izlucheniy [The First
All-Russian conference with international participation "Physics and
ecology of electromagnetic radiation"], Agoy, Krasnodar region. September
25 - 30, 2017 Scientific proceedings of the conference. T. 1. P. 29. (In
Russian)
Availble at
conf.biophys.ru/archive/agoi-2017.pdf#page=29
19. Kazarinov
K.D., Gorodezkaya M.V., Polnikov I.G. A dielectric waveguide technique for investigating
strongly absorbing liquids in the microwave band. Nauchnye trudy VII
Megdunarodnogo Kongressa «Slabye i sverchslabye polya i izlucheniya v biologii
i medizine». [VII International Congress
"Low and Superlow Fields and Radiations in Biology and Medicine"],
Saint-Petersburg, 2015. Sci proceedings, Vol. 7, P. 53. (In
Russian)
Available at
www.biophys.ru/archive/congress2015.pdf#page=53