Unlock instant, AI-driven research and patent intelligence for your innovation.

Seal weld repairing method and system of nuclear power plant

A technology for sealing welding and nuclear power plants, applied in arc welding equipment, welding equipment, welding equipment and other directions, can solve the problems of complex repair process and high welding risk, and achieve the effect of simple welding process and guaranteeing welding quality.

Active Publication Date: 2015-04-22
中广核工程有限公司 +1
View PDF4 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention aims at the technical problem of complicated repair process and high welding risk in nuclear power plant seal welding seam defects existing in the prior art, and provides a nuclear power plant seal welding repair method and system, which realizes simple repair welding process and is impossible for the back of stainless steel weld seam The back chamber provides inert gas protection, eliminates the residual moisture after the hydrostatic test, and ensures the technical effect of welding quality

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
  • Seal weld repairing method and system of nuclear power plant
  • Seal weld repairing method and system of nuclear power plant
  • Seal weld repairing method and system of nuclear power plant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Please refer to figure 2 , the embodiment of the present invention provides a nuclear power plant seal welding repair method, the method comprises steps:

[0065] S1. After determining the position of the weld defect of the seal weld, based on the axis of the weld defect position, determine the center line on the weld seam of the seal weld, and drill a plurality of side-by-side first A hole; wherein, there is a hole bridge between any two adjacent holes in the plurality of parallel first holes;

[0066] S2. Disconnecting the hole bridge to form a groove groove on the weld;

[0067] S3. Drilling a second hole at a position on the weld seam at a preset distance from the groove groove, so as to fill the back chamber of the welding operation surface with argon;

[0068] S4, cleaning the back chamber, and performing rework welding on the groove groove and the second hole;

[0069] S5. After the rework welding is completed, check the appearance, liquid penetration and hyd...

Embodiment 2

[0102] Based on the same inventive concept, please refer to Figure 9 , the embodiment of the present invention also provides a nuclear power plant seal welding repair system, including:

[0103] The drilling module 901 is configured to determine a centerline on the weld seam of the seal weld based on the axis of the weld defect location after the weld defect position of the seal weld is determined, and drill more holes on the center line a plurality of side-by-side first holes; wherein, there is a hole bridge between any two adjacent holes in the plurality of side-by-side first holes; the hole bridge is disconnected to form a groove-shaped slope on the weld and drilling a second hole on the weld seam at a predetermined distance from the groove groove, so as to fill the back chamber of the welding operation surface with argon;

[0104] The cleaning and welding module 902 is used to clean the back chamber and perform rework welding on the groove groove and the second hole;

...

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 discloses a seal weld repairing method and a system of a nuclear power plant, and solves the technical problems of complex welding line defect repairing process and high welding risk of the nuclear power plant seal weld in the prior art. The method comprises the following steps: (1) multiple first holes are drilled in a welding line defect central line; (2) hole bridges among the first holes are broken to form a groove; (3) a second hole is drilled in a welding line far from the groove by a preset distance for charging argon into a back surface cavity of a welding operation panel; (4) the back surface cavity is cleaned; and the repairing weld is performed for the groove and the second hole; and (5) the appearance, liquid permeation and water pressure test inspections are performed for a repairing welding line. The method realizes the technical effects of easy repairing weld process, provision of sufficient inert gas protection, removal of residual moisture and guarantee of welding quality.

Description

technical field [0001] The invention relates to the technical field of nuclear power plant welding, in particular to a repair method and system for sealing welding of nuclear power plants. Background technique [0002] Welding is an extremely important manufacturing method in the construction of nuclear power projects, and a key technology that needs to be ensured in the process of manufacturing, installation and service maintenance of nuclear power plants. The main components of the nuclear island are all welded structures. The main pressure-bearing components in the nuclear island, including the reactor pressure vessel, evaporator, pressurizer, circulation pump and primary circuit piping, are manufactured and installed on site using welding technology. The long life and high safety and reliability of the welding components of the nuclear island are required to work under high temperature, high pressure, radiation and water (steam) environment, which puts forward extremely ...

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): B23P6/00B23K31/02B23K37/00B23P23/00
CPCA47L9/02B23B49/02B23K9/167B23P6/00
Inventor 惠维山杜文浩钟华李予卫
Owner 中广核工程有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com