Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Large passive pressurized water reactor nuclear power plant crucible-type reactor core catcher

A core capture, passive technology, applied in nuclear power generation, reactors, nuclear engineering and other directions, can solve problems such as failure and radioactive material release

Inactive Publication Date: 2013-06-26
SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
View PDF11 Cites 44 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the IVR also has the risk of failure. After the IVR fails, the core melt will be released from the pressure vessel to the reactor cavity. If there is a large amount of water in the reactor cavity, a steam explosion will occur, and the interaction between the core melt and concrete will also be It is very likely that a large amount of radioactive substances will be released into the environment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Large passive pressurized water reactor nuclear power plant crucible-type reactor core catcher

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] When a serious accident occurs in a nuclear power plant, the core begins to melt and collapse, and the molten material gradually accumulates in the lower chamber of the pressure vessel. In order to alleviate the consequences of serious accidents, the first function is the IVR function. Cooling water enters the reactor chamber through the reactor cavity water injection port 5, the water level in the reactor cavity gradually rises, and a two-phase natural circulation is established in the insulation layer 3. Water vapor comes out from insulation layer outlet 2. When the IVR function is successfully executed, the decay heat of the core melt can be conducted out through the wall of the reactor pressure vessel 1, thereby maintaining the integrity of the reactor pressure vessel 1.

[0017] When the IVR function cannot be successfully performed, the co...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Lengthaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a large passive pressurized water reactor nuclear power plant crucible-type reactor core catcher which comprises a reactor cavity concrete bottom plate (4), a crucible cooling system water filling nozzle (6), a crucible cooling system water vapor outlet (7), a crucible component (8), a crucible cooling system cavity (9) and a melt collector (10). The reactor core catcher is organically combined with an interactive voice response (IVR) system, the safety of the nuclear power plant can be further improved, and the reliability of the system is higher due to the crucible design.

Description

technical field [0001] The invention relates to the technical field of large-scale passive pressurized water reactors, in particular to a crucible-type core collector of a large-scale passive pressurized water reactor nuclear power plant. Background technique [0002] The use of the core trap can make the molten material from the pressure vessel effectively stay in a certain device. By adopting the corresponding external cooling technology of the molten material, the interaction between the core molten material and the concrete can be effectively prevented, thereby reducing the The risk of melting through the bottom of the small containment vessel, and significantly reducing the release of fission products to the environment, greatly reducing the radioactive consequences of severe accidents. [0003] In the design of the existing large passive PWR nuclear power plant, the technology of In-vessel retention (IVR) is adopted to ensure that the lower head of the reactor pressure...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G21C9/016
CPCY02E30/30
Inventor 黄高峰刘鑫方立凯曹克美张琨王佳赟
Owner SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com