| 摘要 |
PURPOSE:To simplify and facilitate the calory control of a gaseous mixture (M) composed a low calory (B) gas for each of respective hot stoves by providing flow rate regulating valves to secondary pipings for a high calory (C) gas to regulate the flow rates thereof and providing shut-off valves to C gas branch pipes. CONSTITUTION:The M gas formed by mixing the B gas from a B gas main pipe 20 and the C gas from the C gas primary piping 9 branched from the C gas main pipe 8 is supplied to an M gas main pipe 7, and is then supplied through the M gas branch pipe 6, and further through an orifice 5, the flow rate regulating valve 4, etc., to the hot stove 1. The C gas is fed through an orifice 18 and the flow rate regulating valve 19 provided to the C gas secondary piping 10 branched on the upper stream side of the orifice 11 of the main pipe 8 to the C gas branch pipe 14 and is supplied through the shut-off valve 15 to the branch pipe 6 in the case of the calory control of the M gas. The control of the amt. of the C gas to be mixed with the M gas is executed by the orifice 18 and the regulating valve 19 and since the M gas calory control is executed as desired for each of the respective hot stoves 1 by the combination thereof with the shut-off valve 15, the calory control of the combustion gases is easily executed. |
