Rapidly to prevent Device for Boiler Furnace Pressure in Coal Firing Thermal Power Plant

摘要

PURPOSE: A device for controlling internal pressure of a boiler furnace of a coal-fired electrical power plant is provided to protect a boiler structure from sudden expansion pressure or contraction pressure because a furnace internal pressure is maintained within a predetermined range by a furnace internal pressure control unit so that a loss caused by damage to the structure is prevented. CONSTITUTION: A device(100) controlling internal pressure of a boiler furnace of a coal-fired electrical power plant comprises a forced draft unit(110), a boiler unit(120), an induced draft unit(130), a furnace internal pressure controlling unit(140), and automatic opening/closing units. The forced draft unit sucks external air from outside. One or more burners of the boiler unit burns fuel by using the external air supplied from the forced draft unit. The induced draft unit discharges exhaust gas generated after burning by the burner. The furnace internal pressure controlling unit controls furnace internal pressure generated in the boiler unit. One or more automatic opening/closing units discharge the exhaust gas of the boiler unit according to the furnace internal pressure or inject the external air into inside of the boiler unit.