Refined filtration drum dedusting device and refined filtration drum dedusting method for inlet air filtering system of gas turbine

Abstract

The invention discloses a refined filtration drum dedusting device and a refined filtration drum dedusting method for an inlet air filtering system of a gas turbine. The refined filtration drum dedusting device comprises a sealing cover, a compressed air pipeline and a back-flushing valve, wherein the sealing cover covers an air outlet end of a refined filtration drum and used for sealing the air outlet of the refined filtration drum; the compressed air pipeline is communicated with the sealing cover; and the back-flushing valve is arranged on the compressed air pipeline and used for controlling the compressed air pipeline to spray compressed air into the refined filtration drum to perform back-flushing dedusting. According to the refined filtration drum dedusting device and the refined filtration drum dedusting method, the refined filtration drum can be cleaned effectively, the phenomenon of the increase of total pressure difference of the air suction system of the gas turbine, caused by pollution of the refined filtration drum, is avoided, the service life of the refined filtration drum is prolonged, the power generation cost of the gas turbine is reduced, the power generating efficiency of the gas turbine is improved, the adaption ability of the machine set to severe weather interferences such as haze, sandy wind, rain and snow and catkin is improved, and the operating safety and the operating stability of the machine set are improved.

Description

technical field [0001] The invention relates to a dust removal device, in particular to a dust removal device and method for a fine filter cartridge of a gas turbine intake filter system. Background technique [0002] Gas turbine, or gas turbine, is an internal combustion power machine that uses continuously flowing gas as the working medium to drive the impeller to rotate at high speed and convert the energy of the fuel into useful work. It is a rotary impeller heat engine. The air intake system of the gas turbine is usually arranged on the top of the gas turbine generator room. Its function is to filter the dust in the air, initially separate the liquid droplets in the air, and supply the filtered clean air to the gas turbine compressor to ensure the normal and stable operation of the gas turbine. [0003] Such as figure 1 As shown, the air intake filter system of SGT5-2000E (V94.2) gas turbine is usually designed with 2 levels, the first level is the antifreeze compartme...

AI Technical Summary

Problems solved by technology

[0004] During the long-term operation of the gas turbine, a large amount of dust will be adsorbed on the surface of the fine filter cartridge, causing its pollution

Especially when the air humidity is high, dust will adhere to the filter paper surface of the fine filter cartridge. At this time, even if the pulse back-blowing self-cleaning system is activated, it will not be able to clean the fine filter cartridge

When the pollution of the fine filter cartridge is serious, the total pressure difference of the gas turbine intake system will increase significantly. On the one hand, the service life of the fine filter cartridge itself will be shortened, and the cost of power generation will be increased; on the other hand, the power generation efficiency of the gas turbine will be reduced.

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