Irradiation Roller Curved Transition for X-ray Shielding
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Solution Overview
Problem
Existing irradiation devices face challenges in providing effective radiation shielding, particularly at the end regions of rollers, where high-energy radiation such as X-rays can escape, compromising safety and efficiency.
Innovation Solution
A roller design with a convexly curved transition area at the end regions, combined with a complementary recess in a shielding block, creates a gap that refracts and weakens X-rays, ensuring effective radiation shielding without sharp edges, and allows for easy assembly and adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional roller design with sharp edges at the transition from frontal area to lateral surface is used, then the structure is simple and easy to manufacture, but radiation shielding is insufficient at the end regions allowing X-rays to escape
Solution Approach 1:
The roller is designed with an arched transition area at the end regions where the contour curves continuously from the frontal area to the lateral surface, eliminating sharp edges. This curvature causes multiple refractions of X-rays passing through the roller, significantly improving radiation shielding effectiveness at the previously vulnerable end regions.
2Ease of operation
If a fixed integrated shielding structure is used, then radiation shielding is effective, but assembly and maintenance become complex and time-consuming
Solution Approach 1:
The shielding structure is divided into modular segments: the roller itself with integrated arched transition areas providing primary shielding, and detachable shielding blocks with complementary recesses that can be easily attached and removed. This segmentation maintains effective radiation shielding while greatly simplifying assembly and maintenance operations.
Solution Approach 2:
The shielding blocks are designed with recesses that nest around the arched transition areas of the roller, creating a complementary fit. This nesting arrangement ensures proper positioning and effective shielding while allowing easy attachment and detachment for maintenance purposes.
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
The solution provides superior radiation shielding by refracting X-rays multiple times, enhancing safety and operational efficiency while simplifying maintenance and assembly through detachable shielding blocks.
Implementation Method 1
High-energy radiation, in particular X-rays, such as those produced when irradiated with electrons, is refracted several times within this gap area and is effectively weakened in this way.
Data Source
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Figure 1b
Figure 2
AI summary
A roller (2) for an irradiation device is described, wherein the roller is designed to guide a web of material to be irradiated past at least one electron beam source (8). The roller comprises a first end-face region (14) of the roller, the diameter of which is smaller than the diameter of the roller, and a cylindrical surface (16) of the roller, which is designed as the cylindrical surface of a right circular cylinder. The cylindrical surface extends axially from a first axial position to a second axial position of the roller, wherein the first axial position has an axial distance from the edge of the first end-face region that is between 3% and 25% of the length of the roller, and wherein the second axial position is further away from the first end-face region than the first axial position.The roller comprises a first curved transition region (15) that extends in a continuous ring shape from the edge of the first end face region to the first axial position of the roller. Viewed in a longitudinal plane through the central axis of the roller, the curvature of the roller's contour at the transition from the first end face region to the first curved transition region, within the first curved transition region, and at the transition from the first curved transition region to the cylindrical surface is each less than a maximum curvature corresponding to a minimum radius of curvature of 5% of the roller's diameter.