High temperature and high pressure dynamic electrochemical test and pH in situ monitoring experimental device

The invention relates to a high temperature and high pressure dynamic electrochemical test and pH in situ monitoring experimental device. The device includes a high temperature and high pressure reaction kettle, a rotation system, a heating insulation system, an external air supply system, a three-electrode system, a first pH composite electrode system, a second pH composite electrode system, a signal transduction pathway, a control box, an external electrochemical workstation, an external pH instrument and a computer. The device utilizes the high temperature resistance, cold resistance, wear resistance, corrosion resistance, anti-magnetoelectric insulation, oil-free self-lubricating, high rotation speed, high strength and other characteristics of a ceramic bearing, can be used in a severe corrosion environment, and also improves the rotation speed and concentricity precision of a rotary working electrode. A collector ring is employed to realize connection of a moving lead and a static lead. The electrochemical signal of a working electrode under a high temperature and high pressure dynamic state can be tested. A high temperature and high pressure pH composite electrode system is employed to realize in situ continuous monitoring and record the pH change of a solution in the vicinity of the rotary working electrode and a bulk solution. The device can be used for high temperature and high pressure dynamic corrosion behavior and mechanism study.