Performance test device and test method for combined air inlet filter of gas turbine

The invention discloses a performance testing device and method for a combined air inlet filter of a gas turbine. The performance testing device comprises a testing pipeline, and the testing pipeline comprises an air inlet chamber, a static filtering chamber, a dynamic filtering chamber, a pulse back flushing chamber, a flow testing chamber and a fan chamber in sequence in the air flowing direction; a humidifier, a dust generator and an aerosol generator are arranged in the air inlet chamber, a static filter is arranged in the static filtering chamber, an upstream particle counter is arranged at an inlet of the static filtering chamber, a dynamic filter is arranged in the dynamic filtering chamber, and a midstream particle counter is arranged at an inlet of the dynamic filtering chamber; an airflow scatterer, a downstream particle counter and a high-efficiency filter are arranged in the pulse reverse blowing chamber, the blowing direction of the airflow scatterer is parallel to and directly faces the air inle