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

Nuclear power station reactor internals anti-breaking assembly bottom plate measuring method

A measurement method and internal component technology, applied in geometric CAD, design optimization/simulation, etc., can solve problems such as waste of construction time, material resources, and increased safety and quality risks

Inactive Publication Date: 2020-06-19
国核示范电站有限责任公司
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such repeated disassembly and assembly and hoisting not only waste construction time and material resources, but also increase safety and quality risks

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
  • Nuclear power station reactor internals anti-breaking assembly bottom plate measuring method
  • Nuclear power station reactor internals anti-breaking assembly bottom plate measuring method
  • Nuclear power station reactor internals anti-breaking assembly bottom plate measuring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] Combine below Figure 1-5 The method for measuring the bottom plate of the anti-break assembly of nuclear power plant internals of the present invention, specifically the method for measuring the distance between the bottom plate of the anti-break assembly of nuclear power plant internals and the bottom head of the pressure vessel, is described in detail.

[0037] 1) Establishment of pressure vessel coordinate system

[0038] Such as figure 1 , figure 2 As shown, after the pressure vessel is in place, the measurement control points are arranged on the wall of the refueling pool, and the control points are fixed with hot melt adhesive to ensure that the laser tracker can observe at least 6 measurement control points each time it is set up. The 25mm / 3mm cylindrical target base collects the measurement points on the top circumference of the No. 1 bolt hole 4 of the pressure vessel and the No. 37 bolt hole 5 of the pressure vessel, and measures 8 uniformly distributed me...

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 the field of nuclear power equipment installation, and particularly relates to a method for measuring the distance between a CAP1400 nuclear power station reactor internals anti-breaking assembly bottom plate and a pressure vessel bottom sealing head. The method includes: collecting three-dimensional measurement points of the sealing surface and the bottom end socket of the pressure vessel, establishing a pressure vessel coordinate system, and fitting the outline of the bottom end socket; collecting three-dimensional measurement points of a reactor internal top flangeand an anti-breaking assembly bottom plate, establishing a reactor internal coordinate system, and fitting the outline of the anti-breaking assembly bottom plate; hoisting the reactor internals into apressure vessel, adjusting, collecting three-dimensional measurement points of flanges at the tops of the reactor internals, and fitting actual axes; and importing the reactor internals model into apressure vessel coordinate system, adjusting the model according to the actual axis position, and calculating the distance between the bottom plate and the bottom seal head. The method has the beneficial effects that a person does not need to enter the limited space for measurement, hoisting in and hoisting out of the reactor internals are reduced by one time respectively, mounting and dismountingof the anti-breaking assembly are reduced by one time respectively, and the hoisting and limited space operation safety risk and the part damage risk are reduced.

Description

technical field [0001] The invention belongs to the field of nuclear power equipment installation, and in particular relates to a method for measuring the bottom plate of a nuclear power plant internal component anti-break assembly, in particular to a method for measuring the distance between the bottom plate of a CAP1400 nuclear power plant internal component anti-break component and the bottom head of a pressure vessel. Background technique [0002] The lower part of the internals of the PWR is designed with an anti-break assembly (or called a secondary support assembly), and the anti-break assembly is connected to the supporting plate of the internals through the support columns. When the reactor internals break and fall, the bottom plate of the anti-break assembly hits the bottom of the pressure vessel, and the energy-absorbing sleeve of the anti-break assembly will counteract the kinetic energy through plastic deformation and reduce the impact on the core. In order to a...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F30/17
Inventor 岳凯崔少彬刘非张怀旭于立东王宏达万斌斌张睿周志勇傅承涛胡浩李栋闫冬
Owner 国核示范电站有限责任公司
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