PULSE CLEANING DEVICE FOR HEATING SURFACES OF FIRE-TUBE AND GAS-TUBE BOILERS Russian patent published in 2014 - IPC F28G7/00 

FIELD: power industry.

SUBSTANCE: device includes a combustion chamber with exhaust nozzles distributed along its longitudinal axis, fuel and air supply branch pipes, a mixer connected to a mixture line, some part of which is located inside a combustion chamber and perforated in sections between exhaust nozzles, an ignition source, a control unit connected through the control line to the ignition source. The boiler gas chamber is provided with guide impact connection pipes interconnected with its volume and by means of waveguides to the exhaust nozzles and directed to dirty inner surfaces of the boiler tubes, taken through a tube sheet to the boiler gas chamber volume; in addition, the control unit is connected via control lines to an electromagnetic valve on the fuel feed connection pipe and to an electromagnetic valve on an air supply connection pipe.

EFFECT: invention allows performing effective cleaning of tube bundles of heating surfaces due to rational distribution and delivery of impact waves with a system of waveguides to impact nozzles and accurate direction of impact guide nozzles to dirty heating surfaces.

1 dwg