Reactor Repair Installation Device for Precise Water Jet Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The difficulty in positioning a water jet peening device for reactor vessel maintenance due to the need for manual crane operation in a water-filled environment, leading to challenges in accurately mounting the device to instrumentation nozzles within the reactor vessel.
Innovation Solution
An installation device comprising a lifting device, a moving device, and a position adjustment device that suspends and supports the water jet peening device from a work floor, allowing for precise horizontal movement and adjustment to facilitate easy mounting on instrumentation nozzles, with an air balancer and suspension switch metal fitting for enhanced safety and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a water jet peening device is mounted to an instrumentation nozzle using a supporting device held from outside, then the device can be positioned for work, but the operator faces difficulty in positioning due to manual crane operation requirements in a water-filled environment
Solution Approach 1:
The patent introduces a supporting device that acts as an intermediary between the water jet peening device and the instrumentation nozzle. This supporting device includes a holding portion that engages with the nozzle from the outside, eliminating the need for direct manual handling in the water-filled environment. The supporting device serves as a mediator that simplifies operator interaction while maintaining secure positioning.
Solution Approach 2:
The patent replaces manual crane operation with a more sophisticated positioning system that includes the supporting device, holding portion, and engagement mechanism. This substitution eliminates the need for operators to manually control cranes in difficult environments, replacing simple mechanical lifting with a more complex but user-friendly positioning system that provides better control and precision.
2Measurement precision
If manual crane operation is used to lower the water jet peening device, then the device can be mounted, but positioning accuracy is reduced due to difficulty in precise control
Solution Approach 1:
The supporting device is designed to preliminarily engage with the instrumentation nozzle before final positioning. The holding portion is configured to fit onto the nozzle in advance, establishing a predetermined engagement relationship. This preliminary action ensures that the device is properly aligned and secured before precise positioning operations begin, improving both accuracy and ease of operation.
Solution Approach 2:
The supporting device serves as an intermediary that provides a stable interface between the water jet peening device and the instrumentation nozzle. This mediator enables precise positioning by providing a controlled engagement point, eliminating the need for direct manual manipulation and improving positioning accuracy while reducing operational difficulty.
3Ease of manufacture
If the supporting device holds the in-core instrumentation cylinder from outside, then mounting is possible, but the system becomes complex and time-consuming to assemble
Solution Approach 1:
The supporting device is segmented into distinct functional components: a holding portion that engages the instrumentation nozzle, a connection portion that attaches to the water jet peening device, and a positioning mechanism. This segmentation allows each component to be optimized independently and assembled in a straightforward sequence, reducing overall assembly complexity and time while maintaining the external holding configuration.
Solution Approach 2:
The supporting device is designed with universal features that allow it to work with different instrumentation nozzles and water jet peening devices. The holding portion and connection portion are configured to provide multi-functional engagement, reducing the need for custom-fitted components and simplifying the assembly process. This universal design reduces both assembly complexity and time while maintaining effective external holding.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Improves workability by enabling easy and precise positioning of the water jet peening device on instrumentation nozzles, reducing the risk of accidents and shortening the time required for maintenance, while ensuring safe and stable operation.
Implementation Method 1
an air balancer that reduces a weight of the reactor repair device is provided to the installation jig
Implementation Method 2
The water jet peening is to jet high-pressure water containing cavitation bubbles to a surface of a metal member in water to improve the tensile residual stress on the surface of the metal member into the compressive residual stress
Data Source
AI summary
In an installation device of a reactor repair device and a method, an installation pole (111) connected with an upper portion of a water jet peening device (101), a lifting device (112) that can suspend and support an upper portion of the installation pole (111) and can lift the installation pole (111) from a work floor (121), a moving device (113) that can move the lifting device (112) in two directions intersecting in a horizontal direction, and a position adjustment device (114) that can move the installation pole (111) in the horizontal direction in a state where the installation pole (111) is supported by the lifting device (112).