Gas turbine inlet air filtering device

The utility model discloses a gas turbine inlet air filtering device which comprises a bottom plate, a gas turbine, a tail section air inlet cover, a middle section air inlet cover and a head section air inlet cover, the gas turbine is installed on the bottom plate, the tail section air inlet cover is installed in front of the air inlet end of the gas turbine, and shutters are installed on the four side faces of a cover body of the head section air inlet cover. According to the four-direction air inlet device, air inlet in four directions can be achieved, the air inlet amount is increased, and therefore the requirement of a gas turbine for air can be better met, the size of a filter chamber can be reduced under the condition that the air inlet amount is ensured, and the occupied space of the device is reduced. The first-stage filter body, the second-stage filter body and the third-stage filter body are sequentially arranged from top to bottom; according to the gas turbine filter, three-stage filtration can be