Double air supplying surging system for building curtain wall performance detection

The utility model provides a double air supplying surging system for detecting building curtain wall performances such as water sealing performance and wind load resistance; the double air supplying surging system comprises a high-pressure wind path system, a middle pressure wind path system, a wind path conversion system, a surging pressure-regulating system and a test box; the air inlet and the air outlet of the high (middle) pressure centrifuged blower are respectively connected with two high (middle) pressure change-over switching valves and then are connected with a high (middle) pressure three-way reversing valve by pipelines; the wind path conversion system comprises a high pressure switch butterfly valve and a middle pressure switch butterfly valve, and the three-way reversing valve of the high (middle) pressure wind path system is connected to the test box through the high (middle) pressure switch butterfly valve by pipelines; the pressure switch butterfly valve has the characteristics that: 1. preci