Heater for nuclear reactor and nuclear reactor

Abstract

A heater for nuclear reactor comprises a heating device, which is used to heat a coolant in a nuclear reactor and is arranged in the bottom of the nuclear reactor; a fixing device, which is used to fix the heating device; a support device, which is arranged on the periphery of the heating device; and a connection device, which is fixedly connected to the support device. The connection device is detachably connected to the heating device. The connection device is detachably connected to the fixing device. A nuclear reactor comprises the heater mentioned above.

Description

technical field [0001] The present invention relates to the field of nuclear reactors, in particular, to the field of temperature control of coolants of nuclear reactors. Background technique [0002] In nuclear reactors, coolant is usually required to remove heat from the reactor core. For example, in a nuclear reactor, a liquid metal with a low melting point (such as sodium, lead, lead-bismuth eutectic alloy, etc.) is used as the nuclear reactor coolant. This kind of nuclear reactor must ensure that the coolant is in a molten state before starting operation, after stopping operation and when operating at low power. When the nuclear reactor is not operating or at very low power, the heat generated by the core will not be sufficient to maintain the temperature of the liquid coolant above its melting point. If the coolant freezes, it will cause serious damage to the systems and equipment of the nuclear reactor. Therefore, it is necessary to specially set up a heating devic...

AI Technical Summary

Problems solved by technology

However, such a scheme has problems such as large heat transfer resistance, poor heating effect, and complicated heating system.

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