FIELD: process engineering.
SUBSTANCE: invention relates to tube inner surface cleaning. Proposed device comprises gas generator, ejector, fuel nozzle and ignition plug. Combustion chamber with air feed orifices and gas generator nozzle are fitted in gas generator case with clearance relative to its walls. Clearance between combustion chamber and gas generator inner wall communicates with air feed system. Ejector is arranged on gas generator nozzle outlet side. It is provided with mixing chamber and communicates with abrasive feed system. Gas generator nozzle is provided with skew end face. Ejector mixing chamber is arranged inclined to gas generator nozzle lengthwise axis and turned toward said skewed end face.
EFFECT: increased angle of effects of high-temperature mix of gas with abrasive, higher rate of flow.
19 cl, 8 dwg
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