Steam generator secondary side boundary simulation device for water supply system test

The invention discloses a steam generator secondary side boundary simulation device for a water supply system test. The steam generator secondary side boundary simulation device comprises a back pressure control system, a data acquisition control system and a numerical simulation module, a numerical simulation module is arranged in the data acquisition control system, a thermal hydraulic model is built in the numerical simulation module, the data acquisition control system receives the flow signals and the pressure signals, the flow signals of the flow sensor are input into the thermal hydraulic model, and the steam pressure, the liquid level and the steam flow of the secondary side of the steam generator are calculated and output. And the secondary side pressure of the steam generator serves as a target value of a water supply pipeline in the back pressure control system, and the data acquisition control system sends a control signal to the throttling regulating valve according to the target value and contro