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Application

2001129478/06, 2001-10-30

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Start date

2001-10-30

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Actual filing date

2001-10-30

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Published

2003-12-20

(72)

Inventor

Karmazinov F.V.Prjadkin E.I.Dikarev V.I.

(73)

Holder

Karmazinov Feliks VladimirovichPrjadkin Evgenij IvanovichDikarev Viktor Ivanovich

METHOD OF LOCATION OF LEAKS IN UNDERGROUND PIPE LINE AND ESTIMATION OF THEIR SIZES Russian patent published in 2003 - IPC

Abstract RU 2219429 C2

FIELD: measurement technology; location of leaks in underground pipe lines and estimation of their sizes. SUBSTANCE: SHF electromagnetic radiation is sent along pipe line at definite orientation and frequency varying with time; location of leak is determined by leakage of electromagnetic radiation from hole by direction finding method; electromagnetic radiation is received by means of receiver whose bandwidth is equal to transmitter frequency band; position and size of leak are determined by abrupt rise of electromagnetic signal; sounding signal is formed at linear modulation frequency as electromagnetic radiation and receiver is moved along pipe line for detection and selection of linear modulation frequency signal at leaky area; then, linear modulation frequency signal is detected by frequency and amplitude and horizontal sweep and frequency mark on oscillator indicator screen are formed by means of detected signals. EFFECT: enhanced reliability of leak location. 4 dwg

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RU 2 219 429 C2

Authors

Karmazinov F.V.

Prjadkin E.I.

Dikarev V.I.

Dates

2003-12-20—Published

2001-10-30—Filed

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