Nuclear reactor thermal hydraulic test system and regulation and control method

The invention discloses a nuclear reactor thermal hydraulic test system and a regulation and control method, and relates to the technical field of nuclear reactors, the key points of the technical scheme are as follows: the pressure and the liquid level of a condenser are automatically regulated through a valve group consisting of a cooling water regulating valve and a condensed water regulating valve, and a reasonable pressure regulating dead zone value and a reasonable liquid level regulating dead zone value are set; the pressure and the water level which influence each other are subjected to mild decoupling control, the cooling water regulating valve is used as a main regulating means, the condensed water regulating valve is used as an auxiliary regulating means, and the pressure and the liquid level can be automatically controlled within a reasonable range according to different operating conditions through an automatic control means. The device can adapt to rapid and large-range working condition change