Accurate and controllable air shock wave soot blower

Abstract

The invention discloses an accurate and controllable air shock wave soot blower including an electric cabinet, a ball valve, a pneumatic control cabinet, a shock wave generator, and a rotating nozzlearranged on a furnace wall. An air outlet of the ball valve is connected to an air inlet of the pneumatic control cabinet and an air outlet of the shock wave generator through air transmission pipelines. An air outlet of the pneumatic control cabinet communicates with an air inlet of the shock wave generator through the air transmission pipelines. The air outlet of the shock wave generator communicates with the rotating nozzle. A jet pipe is arranged in the shock wave generator. The air outlet end of the jet pipe is towards the air outlet of the shock wave generator. The blowing end of the rotating nozzle is arranged in the furnace wall. The rotating nozzle includes an outer pipe and an inner pipe. One end of the inner pipe is the blowing end, and the other end of the inner pipe is provided with a rotating shaft arranged along the axis of the inner pipe. The rotating shaft is connected to a stepping motor driving the rotating shaft to rotate. The input end of the electric cabinet is connected to a power supply. The output end of the electric cabinet is connected to the shock wave generator, the pneumatic control cabinet and the stepping motor through control cables.

Description

technical field [0001] The invention relates to the field of soot cleaning equipment for heat exchangers, in particular to a precise and controllable air shock wave soot blower. Background technique [0002] The heating surface of the boiler will accumulate a large amount of dust particles, loose matter, adhesive matter and sediment during long-term use, which will increase the exhaust gas temperature at the tail of the boiler and reduce the thermal efficiency of the boiler. [0003] Gas shock wave ash remover is often used in traditional boiler cleaning, which uses acetylene (coal gas, natural gas, liquefied petroleum gas) and other common combustible gases and air, after passing through their respective flow measurement and control systems, they are uniformly mixed according to a certain proportion, and then sent to into the combustion chamber for pulse combustion. Different from the conventional combustion process and combustion method, gas pulse combustion uses the unst...

AI Technical Summary

Problems solved by technology

[0005] 1. Strong directionality and dead angle for dust removal

[0006] 2. Acetylene is used as fuel, and the operating cost is high

[0007] 3. Gas (acetylene, gas) is used as the gas source for combustion and explosion, which has potential safety hazards

[0008] 4. Shock wave energy is uncontrollable, causing impact damage to the furnace wall

[0009] 5. The gas ratio changes, there is a squib phenomenon, and the system stability is poor

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