METHOD FOR AUTOMATIC GAS-PULSED CLEANING OF HEATED SURFACES Russian patent published in 2003 - IPC

FIELD: heat power engineering, gas-pulsed cleaning of heated surfaces. SUBSTANCE: the method consists in initial measurement of the level of condensate in the damper, discharge of condensate from the flame conductors, blow-through of the flame conductors, blow-through of the flame conductors with air, blow- through of the gas supply pipeline, filling of pulse chambers with air-gas mixture, blastings of air-gas mixtures in the pulse chambers. As soon as the preset level of condensate is attained, successively at a preset time interval condensate is discharged from each line of the flame conductors. Then, the temperature of the outgoing gases is measured, and after the preset maximum value is attained and kept for a preset time period, the flame conductors are successively blown through during the preset time period. On completion of the blow-through of the last flame conduit during the preset period of time the gas supply pipeline is blown through, the gas pressure in the gas supply pipeline is blown through, the gas pressure in the gas supply pipeline is measured, and if the gas pressure corresponds to that preset in the damper for each pulse chamber, high-voltage discharges are conducted with an interval between the discharges sufficient for filling the pulse chamber with air-gas mixture. After each blast of the air-gas mixture in the pulse chamber, the actual and preset quantities of blasts are compared, and if the difference of the actual and preset quantities of blasts in the pulse chamber exceeds the preset value, the blasts are stopped, and an emergency shut-down of the gas-pulsed system occurs. EFFECT: facilitated procedure. 1 dwg