Fixed rotary type soot blower for large-size power station boiler furnace arch

Abstract

A fixed rotary type soot blower for a large-size power station boiler furnace arch is composed of an outer sleeve (1), an inner sleeve (2), a sealing ring (3) and a fixed rotary type soot blower body (4). The fixed rotary type soot blower for the large-size power station boiler furnace arch has the advantages that the single-injector fixed rotary type soot blower is arranged to be perpendicular to a slope surface, a gun tube is made of heat-resisting materials, the fixed rotary type soot blower stretches into a combustion chamber at a proper distance, is mounted and fixed and then blows soot in a rotary mode, and the angle of the injector, soot blowing pressure and the flow rate are calculated theoretically and then are adjusted on site to achieve the optimal soot blowing effect. The fixed rotary type soot blower for the large-size power station boiler furnace arch further has the advantages that sealing of the connecting portion of the soot blower and a furnace wall is achieved, and the fixed rotary type soot blower for the large-size power station boiler furnace arch can bear temperature higher than 1000 DEG C.

Description

technical field [0001] The invention relates to the field of boiler soot blowers, in particular to a fixed rotary soot blower used for a large power station boiler refraction angle. Background technique [0002] At present, the refraction corners of large power plant boilers (300MW and above) usually have serious dust accumulation, mainly because there is an upward slope in this part, and the natural flow of flue gas can only take away part of the dust, and a considerable part of it is accumulated on the slope On the surface, after a period of time, the thickness of ash accumulation reaches more than 1 meter, which seriously affects the heat absorption of the heating surface at this part; the long telescopic soot blower cannot be close to the slope surface due to the influence of the installation space and the winding degree of the gun barrel, and the soot blowing effect is not good. ideal. Contents of the invention [0003] The purpose of the present invention is to solv...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the serious dust accumulation at the flame angle of the current large-scale power plant boiler (300MW and above), mainly because there is an upward slope in this part, and the natural flow of flue gas can only take away part of the dust. A considerable part of it is accumulated on the slope surface, and after a period of time, the thickness of the accumulated ash reaches more than 1 meter, which seriously affects the heat absorption of the heating surface of this part; the long telescopic soot blower cannot be close to the slope surface due to the influence of the installation space and the winding degree of the gun barrel. The soot blowing effect is not ideal, but a fixed rotary soot blower for large power boilers is provided

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