Simulator for soil corrosion of pipeline under cathodic protection

The invention discloses a simulator for soil corrosion of a pipeline under cathodic protection. The simulator comprises a test cabinet, a heating plate, a water tank, a humidifier, a sample box, an exhaust fan, a first temperature and humidity sensor, a second temperature and humidity sensor, a temperature control device, and a cathodic protection control device, wherein the heating plate is arranged at the bottom of an inner cavity of the test cabinet, and the water tank is arranged above the heating plate and is connected with an external water source; the humidifier is connected to the upper part of the water tank, and the humidity of soil in the test cabinet is controlled by controlling the sealing state of the test cabinet and the humidifier; the sample box is arranged above the water tank, and simulated pipeline samples are arranged in the sample box; the exhaust fan is arranged above the sample box, and the first temperature and humidity sensor is arranged at the upper part of the inner cavity of the test cabinet, and is used for monitoring the temperature and humidity of air inside the test cabinet; the second temperature and humidity sensor is arranged inside the sample box and is used for monitoring the temperature and humidity of soil in the test box, and the temperature control device is used for controlling the temperature of soil by controlling the exhaust fan and the heating plate; the cathodic protection control device is connected with the simulated pipeline samples and is used for providing cathodic protection for the simulated pipeline samples.