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

Field disassembling and assembling process of upper reactor internal control rod guide cylinders

A technology of guide cylinders and internal components, which is applied in the field of on-site disassembly and assembly of control rod guide cylinders of upper reactor internal components, can solve the problems of unreachable personnel and limited operating space of the upper support plate, so as to avoid equipment damage, stabilize and Precise dismantling and assembly, tools and simple process results

Active Publication Date: 2019-07-05
SANMEN NUCLEAR POWER CO LTD
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, if the above-mentioned factory process is followed, there are problems such as limited operating space and inaccessibility of personnel at the upper support plate.

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
  • Field disassembling and assembling process of upper reactor internal control rod guide cylinders
  • Field disassembling and assembling process of upper reactor internal control rod guide cylinders
  • Field disassembling and assembling process of upper reactor internal control rod guide cylinders

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0084] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0085] Such as figure 2 As shown, a support pin ejection tool is mainly composed of a support base, a coarse thread screw, a top plate, two ejector rods and other components. The upper plate of the support base is tapped with a threaded through hole, which is engaged with the screw mandrel. The screw mandrel is processed with a flat or hexagonal head for screwing. The two ejector rods pass through the upper plate and the top plate of the support base and pass through Intermediate threads and nuts are fixed on the top plate. By turning the screw mandrel, the top plate and the two ejector rods are fed upwards, and an upward thrust can be applied to the support pin of the lower guide cylinder.

[0086] Such as image 3 , 4 As shown, a support pin press-in tool is mainly composed of two pull claws, two pull rods, a pull plate, a coarse tooth screw, and...

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 technical field of pressurized water reactor nuclear power station reactor upper reactor internal control rod guide cylinder assemblies and specifically relates to a fielddisassembling and assembling process of upper reactor internal control rod guide cylinders in order to overcome the physical condition restrictions. According to the field disassembling and assembling process of the upper reactor internal control rod guide cylinders, provided by the invention, related tools are used in cooperation to disassemble and assemble the guide cylinders in the designatedpositions of upper reactor internals. The field disassembling and assembling process is characterized by comprising the steps of dismantling of guide cylinder fastening bolts, dismantling of the upperguide cylinder, dismantling of the lower guide cylinder, reinstallation of the lower guide cylinder, reinstallation of the upper guide cylinder and installation of the guide cylinder fastening bolts.Through the field disassembling and assembling process, the upper and lower guide cylinders in the designated positions of the upper reactor internals can be effectively disassembled and assembled onsite during the establishing, installation and debugging period of a pressurized water reactor nuclear power unit, supporting pins can be disassembled and assembled more reliably, stably and accurately, the disassembling and assembling quality can be ensured, and damage to equipment can be avoided. The field disassembling and assembling process is also applicable to the manufacturer equipment assembly stage.

Description

technical field [0001] The invention belongs to the technical field of a control rod guide cylinder assembly of an upper internal component of a pressurized water reactor nuclear power plant, and in particular relates to an on-site disassembly process for a control rod guide cylinder of an upper internal component. Background technique [0002] Dozens of sets of upper and lower control rod guide cylinders (hereinafter referred to as guide cylinders) components are usually installed in the upper reactor internals of the pressurized water reactor nuclear power plant. As shown in the installation instructions figure 1 As shown, the middle of the upper and lower guide cylinders is fixed to the upper support plate by flanges and four fastening bolts, and the lower ones interfere with the pin holes on the upper core plate through two open support pins on the bottom flange of the lower guide cylinder. The assembly is positioned and the interference is large. This interference fit...

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): B25B27/02B25B13/48
CPCB25B13/48B25B27/02B25B27/023
Inventor 李涛何行洲郭科科秦小军董宝泽叶荣山王培源郑琦吴俊
Owner SANMEN NUCLEAR POWER 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