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Self-pressurized reactor core water supply system

A water replenishment system and self-filling technology, applied in reactors, greenhouse gas reduction, nuclear engineering, etc., can solve the problem of occupying containment space, and achieve the effect of occupying less containment space, reducing the number, and small volume

Active Publication Date: 2014-07-16
SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Since the core make-up water tank is connected with the coolant, it is a high-pressure equipment and occupies the space in the containment vessel

Method used

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  • Self-pressurized reactor core water supply system

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Embodiment Construction

[0035] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] Such as figure 1 As shown, a self-pressurized reactor core water supply system according to the present invention includes a containment vessel 11 and a reactor pressure vessel 1 disposed therein, a solenoid valve 2, a depressurization / pressurization pipeline 3, a safety valve 4, and a self-pressurized water supply system. Tank 5, sprinkler 6, refueling water tank 7, refueling water tank check valve 8, make-up water tank check valve 9, shared safety injection pipeline 10; the refueling water tank 7 is in atmospheric communication with the containment vessel 11;

[0037] The head space of the reactor pressure vessel 1 is connected to the sprinkler 6 through the pressure-reducing / charging pipeline 3, and a solenoid valve 2 is arranged on the pressure-reducing / charging pipeline 3, and the sprinkler 6 is located in the water in the lower p...

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Abstract

The invention belongs to the technical field of nuclear power plant reactor safety system design, and particularly relates to a small modular reactor passive self-pressurized reactor core water supply system. According to the small modular reactor passive self-pressurized reactor core water supply system, a refueling water tank is communicated with containment atmosphere, the headspace of a reactor pressure vessel is connected with a sprayer through a pressure reducing / pressurizing pipeline, the pressure reducing / pressurizing pipeline is provided with an electromagnetic valve, the sprayer is positioned in water on the lower portion of a self-pressurized water supply tank, the upper portion of the self-pressurized water supply tank is filled with nitrogen gas, the self-pressurized water supply tank is provided with a safety valve and is positioned in the refueling water tank, the refueling water tank is filled with water, the bottom of the self-pressurized water supply tank is connected with the lower portion of the reactor pressure vessel through a shared safe injection pipeline, the section of the pipeline is provided with a water supply tank check valve, the bottom of the refueling water tank is connected with the lower portion of the reactor pressure vessel through a shared safe injection pipeline, and the section of the pipeline is provided with a refueling water tank check valve. According to the present invention, with the simple principle, the small equipment and the low pressure bearing requirements, the small break loss of the coolant accident can be effectively relieved.

Description

technical field [0001] The invention belongs to the technical field of safety system design of nuclear power plant reactors, and in particular relates to a passive self-filling pressurized reactor core water supply system of a small modular reactor. Background technique [0002] The special safety system of the pressurized water reactor has gradually shifted from the active system of the second-generation power station to the passive system of the third-generation power station. The active safety system is an active system, and its operation requires power and pumps to provide power; the operation of the passive safety system relies on measures such as natural circulation or gravity drive, and does not require external power. [0003] Typical passive safety systems, such as AP1000 nuclear power plants, include passive waste heat removal systems, passive safety injection systems, and passive containment cooling systems. Among them, the passive safety injection system is comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C15/18G21C15/12G21C15/14
CPCY02E30/30
Inventor 申屠军廖亮林千司胜义
Owner SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
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