Flooded-type containment complete passive after-heat removal system

A passive waste heat and containment technology, which is applied in nuclear power generation, reactors, and greenhouse gas reduction, etc., can solve the problems of the loss of the final heat sink of the containment and the limited water capacity, so as to ensure the reliability and safety of the system operation, prevent the Evaporation, the effect of eliminating dependence

Active Publication Date: 2013-10-30
SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
View PDF3 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This design has its advantages, but it also has its disadvantages, because the decay heat of the core of the nuclear power plant exists for a long time. When the heat is discharged, the cooling water submerged in the upper par

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
  • Flooded-type containment complete passive after-heat removal system
  • Flooded-type containment complete passive after-heat removal system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] In order to understand the present invention more clearly, the present invention will be further described below in conjunction with the accompanying drawings.

[0018] like figure 1 As shown, a water-flooded containment completely passive waste heat export system includes a separate cooling device 3, a chimney 4, a deflector 5, a vacuum device 6 and a vacuum monitoring device 7, and the deflector 5 adopts a relatively Made of a good metal material, such as a stainless steel plate, the deflector 5 is a frame structure closed all around, and several water holes are opened at the bottom of the deflector 5, and the height of the part with the water holes at the bottom of the deflector 5 is 0.5 ~ 10m, can be 0.5m, 2m or 10m, to provide a passage for the flow of cooling water. The deflector 5 is placed at the bottom of the pool 9. The deflector 5 surrounds the containment vessel 1 and is immersed in the cooling water. There is a space around the deflector 5 and the pool 9. ...

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

No PUM Login to view more

Abstract

The invention relates to the field of an engineering safety system of a nuclear power station reactor, and in particular relates to a flooded-type containment complete passive after-heat removal system with final hot traps after accidents, in order to solve the problem that after the safety accidents of a nuclear power station, cooling water evaporates completely, and most final hot traps are lost for the flooded-type safety shell. A flow guide plate is in a framework structure with a sealed periphery, and a plurality of limber holes are formed in the lower part of the flow guide plate; the flow guide plate is placed on the bottom of a water tank, surrounds the containment, and is immersed into cooling water; an evaporation end of a separated-type cooling device is placed in cooling water at the outer side area of the flow guide plate; a condensation end of the separated-type cooling device is configured into a chimney. Heat emitted by the containment is transmitted to the separated-type cooling device through the natural circulation of a cooling liquid, and the separated-type cooling device removes heat through the chimney again. The system adopts mature equipment and is driven passively, thus the system running reliability and safety are guaranteed, and further the safety of a nuclear power station is increased obviously.

Description

technical field [0001] The invention relates to the field of special safety systems for nuclear power plant reactors, in particular to a passive residual heat export system for water-flooded containment with final heat sinks after an accident. Background technique [0002] After an accident in a nuclear power plant, as long as three conditions are met, the safety of the unit can be guaranteed. These three conditions are: 1. Reactivity control, 2. Radioactive containment, and 3. Waste heat discharge. For the discharge of waste heat in the third point, relatively speaking, the technical difficulty is greater, and the safety requirements are high, but it is often unsatisfactory. [0003] At present, the waste heat export methods commonly used in nuclear power plants are as follows. Both the second generation nuclear power plant and the third EPR nuclear power plant adopt the active waste heat discharge method, that is, use multiple sets of redundant safety power supplies and pu...

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): G21C15/18
CPCY02E30/40Y02E30/30
Inventor 郑明光叶成顾国兴陈煜林千窦一康司胜义
Owner SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap