Boost jet nozzle for blockage removal of air pre-heater of heat-engine plant

Abstract

The invention relates to the technical field of boiler cleaning equipment, in particular to a boost jet nozzle for blockage removal of an air pre-heater of a heat-engine plant. The boost jet nozzle can improve the cleaning effect, improve the flushing efficiency, reduce the cleaning construction difficulty caused by counter-acting force, and reduce the cleaning hazards. The boost jet nozzle comprises a nozzle body. A groove is formed in the right end of the nozzle body. A jet impingement nozzle hole is formed in the left end of the nozzle body. The right end of the jet impingement nozzle holecommunicates with the left end of the groove. The right side of the side wall of the nozzle body communicates with and is provided with three groups of boost nozzle holes. The three groups of boost nozzle holes all communicate with the side wall of the groove. The angle of 60 degrees is formed between each boost nozzle hole and the axis of the nozzle body.

Description

technical field [0001] The invention relates to the technical field of boiler cleaning equipment, in particular to a plugging and cleaning booster jet nozzle of an air preheater in a thermal power plant. Background technique [0002] As we all know, when the power plant boiler is in operation, two types of soot and salt deposits, loose and cohesive, often appear inside the tube bundle of the surface tube air preheater. The heat exchange efficiency of the air preheater is insufficient, and the safe operation of the boiler will be threatened in the case of serious blockage. The internal blockage of the conventional air preheater tube bundle is dredged by mechanical impact dredging, compressed air dredging, water gun dredging, etc., while mechanical and compressed air dredging, It is effective for the loosening and dust accumulation in the air preheater, but it does not have the ability to clean the compaction and salt formation. The high-pressure water gun has a certain flushi...

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Problems solved by technology

[0002] As we all know, when the power plant boiler is in operation, two types of ash deposits and salt deposits, loose and cohesive, often appear inside the tube bundle of the surface tube air preheater. The heat transfer efficiency of the air preheater is insufficient, and the safe operation of the boiler will be threatened in the case of serious blockage. The internal blockage of the conventional air preheater tube bundle is dredged by mechanical impact, compressed air, and water gun, while mechanical and compressed air dredging, It is effective for the loosening and dust accumulation in the air preheater, but it does not have the ability to clean the hardening and salt formation. The high-pressure water gun has a certain cleaning effect on the hardening and salt formation, but the efficiency of conventional high-pressure washing is low. At the same time, the gun head There is a reverse force, and the cleaning construction is more difficult

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