Passive and active combined special safety system for nuclear power plant

A safety system and passive technology, applied in the field of nuclear power plant safety equipment, can solve problems such as undiscovered pressure vessels, and achieve the effects of improving system reliability, simplifying structure and reducing construction costs

Inactive Publication Date: 2011-08-31
CHINA NUCLEAR POWER ENG CO LTD
View PDF7 Cites 75 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Except for Westinghouse AP1000 and AP600, which have a reactor cavity water injection system designed with built-in refueling water tanks, there are curren

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
  • Passive and active combined special safety system for nuclear power plant
  • Passive and active combined special safety system for nuclear power plant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] Such as figure 1 As shown, an ad hoc safety system combining passive and active for pressurized water reactor nuclear power plants includes several rows of passive high-pressure core make-up water tanks 1 corresponding to the number of rows and the number of loops. The passive The high-pressure core make-up water tank 1 is set higher than the core 10, and communicates with the primary loop of the reactor through a safety injection pipeline. The injection pipeline is provided with a valve triggered by a low pressure signal of the primary loop. In addition, the ad hoc safety system also includes several rows of passive waste heat discharge heat exchangers 5 on the secondary side corresponding to the number of circuits, and the heat transfer tube bundles of each row of passive waste heat discharge heat exchangers 5 on the secondary side Immersed ...

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 belongs to safety equipment for a nuclear power plant, in particular to a passive and active combined special safety system for the nuclear power plant. The system comprises a passive high-pressure core water supply tank, an accumulator, a low-pressure safety injection pump, a refueling water tank, a secondary-side passive residual heat removal heat exchanger, a vapor condensation water tank, a containment spray system, a passive reactor cavity water injection system, related valves and related pipes. When the nuclear power plant has a design basis accident or beyond design basis accident, through a series of passive and active safety facilities used in all steps, the circuit of a reactor and the core can be cooled effectively, so that the nuclear power plant can enter a safe cold shutdown condition smoothly; and thus, the serious accident consequence of the reactor is inhibited or relieved, damage caused by accidents is relieved, and the safety of the nuclear power plant is improved.

Description

technical field [0001] The invention belongs to nuclear power plant safety equipment, and in particular relates to a specially designed safety system combining passive and active functions of the nuclear power plant. Background technique [0002] Under accident conditions, the reactor core of the pressurized water reactor nuclear power plant will continue to release a large amount of decay heat after shutdown measures are taken. In order to effectively cool the core, the current technical method is to inject a large amount of heat into the primary circuit system. Cooler borated water (safe to pour). In the early stage of the accident, when the pressure of the primary circuit system was high, the existing power plants mostly used the active method of high-pressure safety injection pump to inject water into the primary circuit. After the pressure is reduced, most power plants use low-pressure safety injection pumps to inject water into the primary circuit, while AP1000 still ...

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
CPCY02E30/32Y02E30/30
Inventor 陈耀东郭强周喆雷宁博石雪垚陈巧艳元一单苏罡
Owner CHINA NUCLEAR POWER ENG 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