METHOD AND DEVICE FOR DETECTING RUPTURE OF PIPING FOR COOLING BLAST FURNACE

PURPOSE:To detect exactly the rupture of a cooling pipe by providing a gas- liquid separator provided with spiral grooves on the inside surface of the sampling piping for the cooling water of a blast furnace body thereby assisting the dissolution of gaseous CO into the sampling water and analyzing exactly the dissolved CO. CONSTITUTION:The sampling water 8 carrying CO foam introduced from a cooling piping ascends in an inside cylinder 1a. Spiral grooves are provided in the cylinder 1a, due to which the contact time between foam and water is longer and the foam dissolves thoroughly in the water. The sampling water 9 separated of foam is conducted from the bottom end part of the cylinder 1b through a sampling piping 11 to a dissolved CO detector which detects the rupture of the cooling piping by measuring the value of the dissolved CO in the water. The contamination by the gaseous CO in the piping and detector is eliminated and the exact measurement is accomplished.