A BACK-FLASH CONTROL APPARATUS

摘要

An apparatus of controlling back flash is provided to restrain back flash of oxy-hydrogen gas by installing back flash blocking solution and a shock absorbing member on a path of the oxy-hydrogen gas. An apparatus of controlling back flash comprises a body(2) filled with a back flash prevention solution(16), a gas inlet(4) connected at a side of the body, a gas passage(14) connected to the gas inlet, a shock absorbing member(8), a gas outlet(12) connected at a side of the body and a member(10) of blocking gas connected to a side of the body. The shock absorbing member is connected to an upper side of the body to absorb impact generated in the body when back flash of oxy-hydrogen gas occurs. The member of blocking gas measures controlled variables of the body. If the controlled variable is larger or smaller than a reference variable, the member of blocking gas blocks flow of gas introduced into the gas inlet.