WATER TIGHTNESS TESTING DEVICE, AND WATER TIGHTNESS TESTING METHOD USING THE SAME

摘要

PROBLEM TO BE SOLVED: To allow for filling the test section with water.;SOLUTION: A first plug 10 and a second plug 11 that expand by pumping air are connected to a compressor C through a first vent pipe 12 and a second vent pipe 13. A water flow pipe 14 penetrating the first plug 10 and having an outlet projecting toward the second plug 11 is connected to a water supply pump P2 through a water supply tube 17 and to an exhaust pipe 19 penetrating the second plug 11 and projecting toward the first plug 10. An tip of a projection portion 19c of the exhaust pipe 19 is provided with a float 20 floating on the water. When water is injected from an outlet 14a of the water flow pipe 14 into a test section and the test section is filled with water, the float on the water causes the tip of the projection portion 19c of the exhaust pipe 19 to come to the upper end of the test section and the air in the test section is discharged from that tip through the exhaust pipe 19.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT