Device for evaluating corrosion resistance of petroleum pipe in oil-water coupling medium

The invention provides a device for evaluating corrosion resistance of a petroleum pipe in an oil-water coupling medium. The device comprises a high-temperature and high-pressure kettle, a rotating cylinder, an oil guide funnel, a connecting rod, a motor, an oil storage tank and an oil tank base. The oil tank base is installed at the bottom in the high-temperature and high-pressure kettle, the bottom of the oil storage tank is installed on the oil tank base, the interior of the oil tank base is a hollow structure, the bottom and the top of the oil storage tank are open, and the bottom of the oil storage tank is connected with the hollow structure in the oil tank base. An oil outlet is formed in the oil tank base, the bottom and the top of a rotating cylinder are open, and the oil guide funnel is arranged in the top of the rotating cylinder. When in use, the rotating cylinder sleeves the oil storage tank, and the top of the rotating cylinder is connected with the output end of the motoroutside the high-tempera