Cleaning device for cooling water coil pipe of coal milling speed reducer of thermal power plant

Abstract

The invention provides a cleaning device for a cooling water coil pipe of a coal milling speed reducer. The cleaning device comprises a cleaning barrel (1), at least two cleaning pumps (2), a compressed carbon dioxide bottle (5), an ultrasonic disturbance device (7), a stirrer (14) and an electric heater (15), wherein the cleaning pumps are each connected with a check valve (3). The two check valves (3) are connected with a first pressure gage (4), a pressure reducing valve (6), a first valve (8) and a second valve (9) in parallel. The other end of the first valve (8) is connected with a fourth valve (12) in series. The other end of the second valve (9) is connected with a third valve (11) in series. The cleaning device for the cooling water coil pipe of the coal milling speed reducer can regularly clean the cooling water coil pipe of the coal milling speed reducer without affecting safe operation and has the advantages that (1) gas and water combined cleaning and pulse cleaning can be achieved; (2) the cleaning conditions can be controlled conveniently; (3) operation is safe and simple, the effect is good, and the cost is low.

Description

technical field [0001] The invention belongs to the thermal energy and power field of a thermal power plant, and in particular relates to a cleaning device for a cooling water coil of a coal grinding reducer. Background technique [0002] As the main equipment component of the coal mill, the coal grinding reducer in thermal power plants plays a vital role in the safe and stable operation of the coal mill. The cooling water coil of the reducer uses closed water or open water as the cooling medium. Whether it is cooled by closed water or open water, as the running time increases, corrosion and scaling will occur inside the cooling water coil. Severe blockage will occur. [0003] The blockage of the cooling water coil of the reducer causes poor cooling water flow, which leads to a rise in the temperature of the bearing bush. If it exceeds the set value of the coal mill, the coal mill will automatically stop running, and the unit load will be reduced due to the shutdown of the ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a coal grinding machine for effectively eliminating the potential safety hazards and major economic losses caused by corrosion, fouling, and clogging of the cooling water coil of the coal grinding reducer in a thermal power plant. The cleaning device for the cooling water coil of the reducer can be used to control the cleaning conditions conveniently. It is especially suitable for regular cleaning of the cooling water system of the coal grinding reducer in thermal power plants to improve the safe and stable operation quality of the coal mill. no negative impact

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