Drum boiler pipe blowing debugging method and system

Abstract

The invention provides a drum boiler pipe blowing debugging method and system. The drum boiler pipe blowing debugging method comprises performing water filling operation and cold state cleaning on a drum boiler; performing first heat state cleaning on the drum boiler; adjusting a pressure value and the water level of a drum in the drum boiler and the opening condition of a temporary control door and performing multiple pipe blowing until the pipeline exhaust of the superheater desuperheating water vapor side meets the preset exhaust qualified conditions; performing second heat state cleaning and performing multiple adjustment on the pressure value of the drum in the drum boiler and performing the pipe blowing operation until a target plate is free of foreign body after the pipe blowing; performing the multiple pipe blowing on the drum boiler repeatedly until the number of blackspots on the target plate does not exceed a number value of the blackspot threshold and the width of every blackspot is smaller than a preset threshold value of the width of every blackspot after the repeated pipe blowing on the drum boiler. According to the drum boiler pipe blowing debugging method and system, guidance and control are performed on the drum boiler pipe blowing debugging process in the integral process and accordingly the good drum boiler pipe blowing debugging effect is implemented and the safe operation of a power generation unit is ensured.

Description

technical field [0001] The invention relates to the technical field of combustion boilers, in particular to a method and system for blowing tube debugging of a drum boiler. Background technique [0002] In the newly installed boiler, sand, scale, welding slag and other sundries will inevitably remain in the heating surface pipes and steam, desuperheating and other pipes during the transportation, storage and installation of the equipment. In the main steam system, if these sundries are not cleaned up and enter the high-speed rotating steam turbine, pitting will occur on the surface of the blades, which will reduce the efficiency of the unit. In severe cases, it will cause major vicious accidents such as blade breakage and speeding; moreover, the system The debris remaining in the steam will have an impact on the steam quality, and will have an extremely adverse impact on the trial operation and commissioning of the unit. [0003] Therefore, according to the provisions of th...

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Problems solved by technology

[0005] Based on this, it is necessary to guide and control the drum boiler blowpipe debugging process because there is currently no complete drum boiler blowpipe debugging method, which cannot ensure the drum boiler blowpipe debugging effect and seriously affects the sa...

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