OVAL TUBE CONNECTION STRUCTURE FOR REDUCING WORKING HOURS AND MATERIAL COST BY ASSEMBLING A V-SHAPED BAND BY USING TWO BOLTS INSTEAD OF WELDING

摘要

PURPOSE: An oval tube connection structure is provided to connect oval tubes dually or triply to form an air insulating layer when the oval tube is used as the flue of a boiler or a generator, thereby preventing heat from being delivered to the outside.;CONSTITUTION: First oval tubes(10a,10b) have flanges(11a,11b) in the end part. The first oval tubes are contiguous to each other. One side of a V-shaped band(40) is formed into an opened ring shape. The V-shaped band has a V-shaped groove(41) and bracket(42) of the center part. The V-shaped groove covers the flanges along the columnar direction. The bracket is formed in opened both ends of the V-shaped band in order to face to each other. A sealant(90) is filled into the V-shaped groove. In the state that flange portions contacting each other are covered by the V-shaped band, the brackets is fastened while facing to each other.;COPYRIGHT KIPO 2010