METHOD FOR DETECTING ZONE OF ELECTRIC CONTACT BETWEEN PIPELINE AND PROTECTIVE ENVELOPE

pipeline erection, namely, monitoring zones of pipeline crossing over automobile roads. SUBSTANCE: method comprises steps of determining electric resistance between pipeline and protective envelope in cross sections passing trough both ends of protective envelope while detecting electric contact acc...

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Bibliographische Detailangaben
Hauptverfasser:	VALEEV D.M, AVERIN N.M, ASKAROV R.M, AMINEV F.M, USMANOV R.R, ISMAGILOV B.G, ASADULLIN M.Z, FAJZULLIN S.M
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	pipeline erection, namely, monitoring zones of pipeline crossing over automobile roads. SUBSTANCE: method comprises steps of determining electric resistance between pipeline and protective envelope in cross sections passing trough both ends of protective envelope while detecting electric contact according to formula: Lleft = {Rl - Rr +L(r+R/2(r+R), where Ll is spacing between zone of electric contact and left end of protective envelope; Rl is electric resistance between pipeline and protective envelope in cross section passing through left end of protective envelope; Rr is electric resistance between pipeline and protective envelope in cross section passing through right end of protective envelope; L is total length of protective envelope; r is electric resistance of one meter of pipeline; R is electric resistance of one meter of protective envelope. EFFECT: simplified process for finding electric contact zone between pipeline and protective envelope.