Nuclear power plant containment vessel sealing performance simulation test system

The invention provides a nuclear power plant containment vessel sealing performance simulation test system which comprises a containment vessel simulation body, a charging and discharging system, a pressure relief system, an acquisition system, an analysis system, a temperature control system, a humidity control system, a pressure control system and a leakage introduction system. The containment simulation body, the inflation system, the exhaust system, the data acquisition system and the data analysis system form a basic configuration part of the sealing test, pressure boosting and pressure reduction in the containment and data acquisition and data analysis on a pressure platform are realized, and the basic requirements of the nuclear power plant containment sealing test are met. The temperature control system, the humidity control system, the pressure control system and the leakage introduction system form a scientific research environment configuration part, and change control over factors such as temperat