AUTOMATIC COMBUSTION CONTROL SYSTEM OF STEAM BOILER, AND STEAM BOILER COMPRISING THE AUTOMATIC COMBUSTION CONTROL SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an automatic combustion control system of a steam boiler, which can achieve proportional combustion control at a low cost.;SOLUTION: An automatic combustion control system of a steam boiler includes a butterfly valve 2 that is interposed in a feed passage for at least one of fuel gas and combustion air, and a drive mechanism 3 that opening/closing-drives the butterfly valve 2 in such a manner that steam pressure taken out from a steam boiler serves as a power source. The drive mechanism 3 comprises a pressure-sensitive displacement part 4 that is displaced depending on a change in the steam pressure, and a power transmission mechanism 6 that converts displacement of the pressure-sensitive displacement part 4 to rotational movement to transmit it to a valve rod 2a of the butterfly valve 2.;COPYRIGHT: (C)2014,JPO&INPIT