Nuclear reactor of integral type

An integral nuclear reactor with a heat transfer liquid with a high boiling point, the integral nuclear reactor comprsing:

• a core with inlet and outlet chambers above and below the core and a protective plug under the heat carrier level,
• circulation equipment including at least one circulation pump, and
• a heat exchanger, wherein:
• that the heat exchanger is arranged coaxially with the core in the annular space between the hub which the core, the inlet and outlet chambers and the protective plug are placed in, and the separation shell inside the reactor vessel which forms an annular downcomer duct and separates the downward cold heat carrier flow from the hot upward one,
• the heat exchanger is a coil one sectioned along the secondary circuit heat carrier so that the tubes of the heat exchanger sections are grouped in the inlet and outlet chambers of the secondary circuit heat carrier on the pipes on the reactor head,
• the heat exchanger bottom is above the windows in the hub which the hot heat carrier flows from the outlet chamber of the core towards the inlet of the heat exchanger through,
• the cold heat carrier flows from the heat exchanger top and enters the annular delay tank with the heat carrier level under the reactor head, with the circulation pump arranged inside of the reactor vessel in such a way that the heat carrier is supplied to the pump suction directly from the annular delay tank from under the heat carrier level through the windows in the shell and the pump duct connected to the reactor head, and
• the pressure pipe of the pump is connected to the annular downcomer duct through the separation shell, or through the partition covering the annular downcomer duct top via the windows in the separation shell or partition, respectively.