Non-excavation type underground pipeline local repairing device

The utility model discloses a non-excavation type underground pipeline local repairing device which comprises an underground pipeline and a local repairing connecting piece, the local repairing connecting piece is provided with a left inserting hole and a right inserting hole, the outer wall of the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	DAI JIA, XIE YINGKAI
Format:	Patent
Sprache:	chi ; eng
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:	The utility model discloses a non-excavation type underground pipeline local repairing device which comprises an underground pipeline and a local repairing connecting piece, the local repairing connecting piece is provided with a left inserting hole and a right inserting hole, the outer wall of the left inserting hole and the outer wall of the right inserting hole are provided with trapezoid grooves I, and the inner wall of the left inserting hole and the inner wall of the right inserting hole are provided with trapezoid grooves II. A limiting lip part I and a limiting lip part II are arranged at an inlet of the trapezoid-shaped groove I, a limiting lip part III and a limiting lip part IV are arranged at an inlet of the trapezoid-shaped groove II, sealing rings are embedded in the trapezoid-shaped groove I and the trapezoid-shaped groove II, an injection cavity is formed between the local repairing connecting piece and the underground pipeline, an injection channel is formed in the upper portion of the inject