High power density electric heating water tank for secondary pre-service hydraulic pressure test of steam generator

The invention belongs to an electric heating water tank, particularly relates to a high power density electric heating water tank for secondary pre-service hydraulic pressure test of a steam generator, which comprises a cylinder, an electric heater, a water inlet pipe and a water outlet pipe; the heating end of the electric heater is located inside the cylinder, the water inlet pipe is arranged at one end of the bottom of the cylinder, and the water outlet pipe is arranged at the other end of the bottom of the cylinder. The water tank has smaller volume, high heating power and high thermal efficiency and can realize quick temperature rise of a secondary shell of the steam generator.