Pre-buried pipe casting cylindrical heat exchanger

The invention discloses a pre-buried pipe casting cylindrical heat exchanger which comprises a casting cylinder and a spiral coil type heat exchange pipe, wherein a heat preservation cotton layer is arranged on the outer side of the casting cylinder; the spiral coil type heat exchange pipe is pre-buried in the cylinder wall of the casting cylinder, and a desalted water inlet pipe is arranged on the lower portion of the casting cylinder; a high-temperature and high-pressure steam outlet pipe is arranged on the upper portion of the casting cylinder, and the upper end and the lower end of the spiral coil type heat exchange pipe are connected with the high-temperature and high-pressure steam outlet pipe and the desalted water inlet pipe respectively. According to the invention, the spiral heatexchange pipe is pre-buried in the cylinder wall of the casting cylinder, so that the spiral heat exchange pipe is absolutely protected, ensuring that the spiral heat exchange pipe cannot be damagedand leak water in a use pr