Spiral vent hose for tunnel construction

The utility model discloses a spiral vent hose for tunnel construction, its hose body connects the spiral pipe that connects gradually by a plurality of festivals through the zip fastener and forms, and the spiral pipe comprises according to the angle batching pipe and the pipe seam welding of prede...

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Bibliographische Detailangaben
Hauptverfasser:	LU LIOU, LU MAOCHENG, WEN KE, ZHU JIAWEN
Format:	Patent
Sprache:	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 spiral vent hose for tunnel construction, its hose body connects the spiral pipe that connects gradually by a plurality of festivals through the zip fastener and forms, and the spiral pipe comprises according to the angle batching pipe and the pipe seam welding of predetermined helix the plastic-coated fabric. The utility model discloses simple structure, the simple installation, easy to maintain, every section length of extension hose body reduces the section header and leaks out, and the ventilation effect is good, and long service life synthesizes economic nature superiority, and air leakage rate is low, and average air leakage rate in 100-meter dash is less than 1%, has good popularization and application and worth.