ORC (Organic Rankine Cycle)-based pressurized water reactor nuclear power plant nuclear safety system and method

Abstract

The invention discloses an ORC (Organic Rankine Cycle)-based pressurized water reactor nuclear power plant nuclear safety system and method. The ORC-based pressurized water reactor nuclear power plantnuclear safety system comprises a cooling water loop, an organic Rankine cycle (ORC) loop and a coolant loop positioned in a nuclear island, wherein the cooling water loop is used for transferring heat absorbed from the coolant loop to the ORC loop; the ORC loop is used for supplying power for the cooling water loop and power equipment dispersed in the nuclear safety system; and the coolant loopis used for exchanging heat with a nuclear reactor, cooling the nuclear reactor and transferring the heat supplied by the nuclear reactor to the cooling water loop. The ORC-based pressurized water reactor nuclear power plant nuclear safety system can effectively prevent serious nuclear safety accidents such as rapid reactor core temperature rise, reactor core melting, nuclear fuel leakage and thelike caused by the lack of a power source of a cooling water pump under force majeure factors such as a natural disaster and the like, provides a guarantee for the safety of a pressurized water reactor nuclear power plant, and avoids environment pollution and economic loss caused by nuclear leakage to the great extent.

Description

technical field [0001] The invention relates to the field of energy and power, in particular to an ORC-based nuclear safety system and method for a pressurized water reactor nuclear power plant. Background technique [0002] As a clean, efficient and high-quality energy, nuclear power is of great significance to the optimization of energy structure and national energy security. However, unlike conventional energy, nuclear fuel has physical characteristics of radioactivity and radiation. The safe design and operation of nuclear reactors are crucial to nuclear power development planning. . At present, most nuclear power plants are pressurized water reactors. Although passive safety design is added to the safety system, hidden dangers still exist. The focus of nuclear power plant safety is to deliver cooling water to the core to cool down the residual heat of the reaction, thereby preventing the core from melting and nuclear fuel from leaking out. However, in the event of nat...

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Problems solved by technology

However, in the event of natural disasters such as earthquakes and tsunamis, due to large-scale power outages and damage to backup facilities, the power of the cooling water delivery pump cannot be guaranteed, resulting in accidents similar to the Fukushima nuclear power plant, resulting in serious environmental pollution and economic losses.

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