Secondary-side passive waste heat discharging system for ship pressurized water reactor

Abstract

The invention relates to a secondary-side passive waste heat discharging system for a ship pressurized water reactor. The system comprises a safety shell, and a high-altitude water tank arranged outside the saftey shell and in a wall face of a ship body, and the system also comprises a reactor pressure container, a steam generator and a passive waste heat discharging condenser, wherein the steam generator is higher than the reactor pressure container in position, and a primary side of the steam generator is communicated with the reactor pressure container respectively by virtue of a main pipeline cooling section and a main pipeline hot section; the passive waste heat discharging condenser is soaked in a water source of the high-altitude water tank, and the bottom of the passive waste heat discharging condenser is higher than a liquid surface in the steam generator; and the passive waste heat discharging condenser is communicated with a secondary side of the steam generator respectively by virtue of a steam pipeline and a condensation pipeline. When a whole ship is in power failure, the waste heat of a ship pressurized water reactor core can be led out by virtue of the natural circulation of a system loop, the advantage of higher natural circulation capacity can be realized, and the safety, the reliability and the economic performance of the ship pressurized water reactor can be improved.

Description

technical field [0001] The invention relates to nuclear reactor safety facilities, in particular to a passive residual heat discharge system on the secondary side of a marine pressurized water reactor. Background technique [0002] The exploitation of offshore resources and the improvement of the living environment of islanders all face the problem of energy shortage. Ships equipped with small pressurized water reactors can provide safe and effective energy supply for offshore oil exploitation and remote islands, and are also suitable for high-power ships and seawater desalination. , which is of great significance to the development of new energy sources. However, when a pressurized water reactor nuclear powered ship suffers from a power outage (including loss of emergency power supply), the main pump shuts down, the flow rate of the reactor coolant drops sharply, and at the same time, the feedwater on the secondary side of the steam generator is lost, resulting in the heat ...

AI Technical Summary

Problems solved by technology

The driving force of the passive waste heat removal system on the secondary side of the ship is the condensation pressure difference and the gravity head difference, which requires the position of the condenser to be higher than the liquid level of the steam generator by a certain value. Conditions as cooling water source

In addition, the ship will sway due to environmental influences such as waves, which will affect the heat removal function of the passive waste heat removal system

In the design of nuclear power plants, the passive waste heat removal technology has been widely recognized and applied as a mature and reliable advanced technology, but the domestic marine PWR passive waste heat removal system has no commercial application. Therefore, it is urgent to develop a suitable for Passive waste heat removal system for marine pressurized water reactor

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