DUCT BURNER CONTROL EQUIPMENT FOR COMPOUND THERMAL POWER HEAT RECOVERY BOILER

摘要

PURPOSE: Duct burner control equipment for a compound thermal power heat recovery boiler is provided to make fuel flow controlled according to the load and make effective control possible by having fuel supply and cut-off functions. CONSTITUTION: In duct burner control equipment for a compound thermal power heat recovery boiler, a header safety cut-off valve(b) having supply and cut-off functions of fuel, a fuel supply control valve(a) controlling fuel flow according to the load, and a fuel safety cut-off valve(c) having fuel supply and safety cut-off functions of a battery are installed to a pipe connected between a fuel chamber supplying gas(1) and oil(2) as boiler fuel and the battery of a heat recovery boiler(3). A flame-electric leakage detector(d) detecting flame and commanding a fuel-cut off, and an induction igniter(e) having an ignition function to induce ignition of main fuel of the battery are installed to heat recovery boiler batteries(4). A spray safety cut-off valve(f) expanding the area contacting with the air of the liquid fuel of the battery is installed to a pipe connected between a spray chamber(5) spraying air to the boiler and the igniter of the boiler. An induction ignition gas safety cut-off valve(g) having a safety cut-off function of ignition gas of each battery is installed to a pipe connected between an ignition gas chamber(6) supplying ignition gas to the boiler and the igniter of the boiler.