Filter for inlet of gas turbine engine

Abstract

The invention relates to the technical field of filters, in particular to a filter for an inlet of a gas turbine engine. The filter comprises a gas inlet front end catkin preventing screen, a rain hood, an anti-icing device, a filter module and a filter outlet pipeline, wherein the gas inlet front end catkin preventing screen, the rain hood, the anti-icing device, the filter module and the filter outlet pipeline are arranged in sequence from the gas inlet side of the filter to the gas outlet side of the filter in the air filtering direction, the anti-icing device is connected with a gas turbine engine system heat source, and the filter outlet pipeline is used for being connected with a gas inlet of a gas compressor of the gas turbine engine. The filter overcomes the defect that when a conventional filter is used in the severe environment with the low temperature and the high humidity in winter, the surface of a filtering material of the filter is blocked and frozen. The reliability of the filter is improved, and the service life of the filter is prolonged.

Description

technical field [0001] The invention relates to the technical field of filters, in particular to a filter used for gas turbine inlets. Background technique [0002] With the strengthening of China's domestic environmental protection awareness, the adjustment of domestic power energy structure, especially the adjustment of domestic northern power and winter heating methods, basically no longer directly use coal-fired units, but use IGCC gas turbine coal gasification power generation and natural gas gas turbine power generation With the heating unit, centralized power generation is used for heating, and the heat pipe network transports the heat source. For this reason, the gas turbine needs to extract the air in the environment of the gas turbine thermal power plant; in order to control the quality of the air entering the gas turbine and ensure the normal operation of the unit, a gas turbine intake filter is required. [0003] The unit generally adopts imported brand gas turb...

AI Technical Summary

Problems solved by technology

The filter pressure difference often rises, the air inhaled by the gas compressor decreases, which affects the combustion of the gas turbine, the load decreases, and the output power decreases, causing the gas turbine to operate at reduced load or the high pressure difference of the intake filter to trip

[0004] Therefore, when the filter used in the gas turbine air intake system of the prior art is used in harsh environments such as low temperature and high humidity in northern China in winter, the surface of the filter material of the filter will be clogged and frozen, the pressure difference of the filter will increase abnormally, and failure will occur. The filter rate is high, so that the filter cannot run well for a long period of time, which seriously affects the normal operation of the entire unit

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