METHOD OF ESTIMATION FREQUENCY PROPERTIES OF THE PREINSULATED PIPES FOR MONITORING THE STATUS OF HEATING NETWORKS
Abstract
Proposed approximate method for the preliminary assessment of the frequency properties unadapted guiding system for monitoring the status of the organization of preinsulated pipes. Guide system elements formed tubes placed in a lossy medium (soil). A theoretical analysis shows the frequency dependence of the propagation constant components: the damping coefficient and the phase coefficient, take advantage of these characteristics of the system for monitoring the status heating networks.
About the Author
E. N. Taletskiy
Belarusian State University of Informatics and Radioelectronics
Belarus
Belarus
References
1. STB 1295-2001. Pre-heat-insulated steel pipes with polyurethane foam. Minsk, Gosstandart Publ., 2007. 36 p. (In Russian)
2. Finkenzeller K. RFID Handbook: fundamentals and applications in contactless smart cards, radio frequency identification and near-field communication. Chichester, John Wiley and Sons Publ., 2010. 462 p.
3. Fursanov M.I., Bogatyrev U.L., Kriskin P.V. [Diagnosis of the state of isolation 110 kV transmission line under operating voltage]. Energiya i Menedzhment, 2011, No. 2, pp. 28–36 (In Russian)
4. Broslavets V.N., Guzhavin G.G., Semenov G.I. Sposob sozdaniya odnoprovodnoy napravlyayushchey linii peredachi elektromagnitnykh signalov po truboprovodu, zapolnennomu dielektrikom, naprimer nefteproduktami [A method for creating a single-track line of transmission of electromagnetic signals through a pipeline filled with a dielectric such as mineral oil]. Patent RF, No. 2027260, 1995.
5. European Standard EN 253-2009. District heating pipes – Preinsulated bonded pipe systems for directly buried hot water networks – Pipe assembly of steel service pipe, polyurethane thermal insulation and outer casing of polyethylene. Brussels, European Committee for Standardization Publ., 2009. 50 p.
6. GOST 30732-2006. Pipes and fittings of steel with thermal insulation made of polyurethane foam with a protective sheath. Moscow, Standartinform Publ., 2007. 48 p. (In Russian)
7. European Standard EN 14419-2009. District heating pipes – Preinsulated bonded pipe systems for directly buried hot water networks – Surveillance systems. Brussels, European Committee for Standardization Publ., 2009. 32 p.
8. Bannister P. R. The image theory electromagnetic fields of a horizontal electric dipole in the presence of a conducting half space. Radio Science, 1982, vol. 17, pp. 1095–1102.
9. Kashprovskiy V.E., Kuzubov F.A. Rasprostraneniye srednikh radiovoln zemnym luchom [Propagation of midband radio waves earthly beam]. Moscow, Svyaz' Publ., 1971. 220 p.
10. Brekhovskikh L.M. Volny v sloistykh sredakh [Waves in layered media]. Moscow, Nauka Publ., 1973. 343 p.
11. Semenov N.A. Tekhnicheskaya elektrodinamika [Technical electrodynamics]. Moscow, Svyaz' Publ., 1973. 480 p.
12. Nikol'skiy V.V., Nikol'skaya T.I. Elektrodinamika i rasprostraneniye radiovoln [Electrodynamics and propagation of radio wave]. Moscow, Nauka Publ., 1989. 544 p.
Review
For citations:
Taletskiy E.N. METHOD OF ESTIMATION FREQUENCY PROPERTIES OF THE PREINSULATED PIPES FOR MONITORING THE STATUS OF HEATING NETWORKS. Devices and Methods of Measurements. 2014;(1):99-105. (In Russ.)
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