INTRAPIPE MAGNETIC FLAW DETECTOR Russian patent published in 2001 - IPC

Abstract RU 2176082 C1

FIELD: intrapipe diagnostics of pipe-line transporting natural and industrial gases, oil and oil products. SUBSTANCE: magnetic flaw detector has two belts of multielement magnetic field converters based on Hall elements. Each multielement converter incorporates multiplexer and differential amplifier. Outputs of Hall elements are connected to inputs of multiplexer which outputs are connected to differential amplifier. Design of amplifiers makes it feasible to increase stability of operation of flaw detectors due to exclusion of external induction, thermoelectric and thermomagnetic effects in connection circuit of converter. Organization of sampling of elements in integrated converter enables unnecessary amplification elements to be excluded, energy consumption by electron components of converter to be reduced and heat release in converter to be diminished. EFFECT: improved reliability of flaw detector. 9 cl, 8 dwg

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RU 2 176 082 C1

Authors

Gavrjushin A.F.

Tsatsuev M.S.

Ferchev G.P.

Tevrjukov M.N.

Urjadov A.S.

Karagin B.A.

Dates

2001-11-20—Published

2000-12-26—Filed