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Low replacement material water-tank emergency coolant system outside nuclear reactor containment vessel

An emergency cooling and nuclear reactor technology, applied in the field of nuclear power, can solve problems such as core loss of cooling, containment loss of spraying, switching failure, etc., and achieve the effect of continuous operation

Active Publication Date: 2014-09-24
中广核(北京)仿真技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, when the safety injection pump and the spray pump are switched from pumping water from the refueling tank outside the containment above the ground level to pumping water from the pit inside the containment, switching failure may occur, resulting in loss of cooling of the core and loss of spraying of the containment, Cause core damage and containment pressure exceeding the design value

Method used

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  • Low replacement material water-tank emergency coolant system outside nuclear reactor containment vessel
  • Low replacement material water-tank emergency coolant system outside nuclear reactor containment vessel

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with specific embodiments and accompanying drawings.

[0020] figure 1 The nuclear island 1 in some embodiments of the present invention is shown, which includes a pressure vessel 10, a containment vessel 20 containing the pressure vessel 10, and an emergency cooling system for a low displacement fuel water tank outside the containment vessel of a nuclear reactor. The pressure vessel 10 is used to accommodate the reactor core (not shown), and withstand the huge operating pressure of the core. The containment vessel 20 is used to withstand the internal pressure, contain the sprayed steam-water mixture, and prevent or reduce the release of radioactive substances to the environment in the event of a loss of water accident in the reactor and / or a rupture accident in the main steam pipe of the secondary circuit. The emergency cooling system is used to alleviate the consequences of the accident an...

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Abstract

The invention relates to a low replacement material water-tank emergency coolant system outside a nuclear reactor containment vessel, which is used for providing cooling fluid for a pressure vessel and / or a containment vessel of a nuclear reactor, the emergency coolant system comprises a material replacement water-tank used for storing the cooling fluid, the material replacement water-tank comprises a first part positioned outside the containment vessel, the first part is communicated to the bottom of the containment vessel, and the cooling fluid collected at the bottom of the containment vessel is capable of flowing in the first part. The low replacement material water-tank emergency coolant system can realize continuous operation of emergent cooling without switching.

Description

technical field [0001] The invention relates to nuclear power technology, in particular to an emergency cooling system for nuclear reactors. Background technique [0002] With the continuous improvement of the safety of nuclear power plants with mature technology, in nuclear power plants of related technologies, when a loss of water accident and / or a rupture accident of the main steam pipe of the secondary circuit occurs, the measures to be taken include: (1) Safety injection system safety The injection pump draws the cooling fluid from the refueling water tank outside the containment above the ground and injects it into the pressure vessel, injects it from the cold pipe section and discharges it to the pit in the containment through the hot pipe section or the cold pipe section; (2) Spraying of the spray system The pump draws cooling fluid from the refueling water tank above the ground in the containment to spray and cool the containment, and the cooling fluid finally enter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C15/18
CPCY02E30/40Y02E30/30
Inventor 骆邦其
Owner 中广核(北京)仿真技术有限公司
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