X-ray Fluorescence Pipe Deposit Detection
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Solution Overview
Problem
Conventional methods for detecting mercury and other material deposits on the inner surface of pipes are inadequate, particularly for uniform films and require strong x-ray radiation, posing safety concerns and limitations in detection accuracy.
Innovation Solution
A device and method utilizing x-ray fluorescence (XRF) to detect deposits on the inner surface of pipes, which emits radiation to excite the surface and detects resulting emissions, allowing for detection without strong x-ray penetration and identifying deposits even if the entire surface is coated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If strong x-ray radiation is used to penetrate the pipe for detection, then the detection capability is improved, but safety hazards increase due to radiation exposure risks
Solution Approach 1:
The patent extracts only the necessary detection function from strong penetrating x-ray radiation. Instead of using high-energy x-rays that penetrate through the pipe wall, the invention uses lower-energy x-ray fluorescence that excites deposits on the inner surface and detects the emitted fluorescence, achieving detection without the harmful penetration effect
Solution Approach 2:
The patent introduces x-ray fluorescence as an intermediary mechanism. Rather than directly detecting deposits through pipe walls with strong radiation, the system uses x-ray fluorescence emission from the deposits themselves as a mediator signal, which can be detected at lower radiation intensities, thereby reducing safety hazards while maintaining detection capability
2Measurement precision
If conventional x-ray penetration method is used, then localized deposits can be detected, but uniform films of mercury cannot be detected due to lack of contrast
Solution Approach 1:
The patent applies the principle of detecting changes in radiation emission characteristics rather than visual contrast. By measuring the intensity and spectrum of x-ray fluorescence emitted from the inner surface, the system can detect uniform films of mercury that would otherwise be invisible, as the fluorescence signal changes when mercury is present regardless of whether it forms localized spots or uniform coatings
3Device complexity
If other materials are deposited in the pipe, then they block x-rays making detection difficult, but the invention can identify deposit types through fluorescence emission
Solution Approach 1:
The patent uses spectral fingerprinting of x-ray fluorescence emissions to create a characteristic signature for each deposit material. Different materials emit fluorescence at distinct energy levels, allowing the system to identify the type of deposit (mercury, lead, etc.) by matching the observed spectral pattern against known material signatures, thereby achieving precise identification even when materials block x-rays
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
Enables accurate detection of mercury and other materials on the inner surface of pipes, including uniform films, without the need for strong x-ray emissions, improving safety and detection precision.
Implementation Method 1
utilizing x-ray fluorescence (XRF) to detect deposits on the inner surface of pipes, which emits radiation to excite the surface and detects resulting emissions
Data Source
AI summary
A method and device for detecting mercury or other material deposits on an inner surface of an enclosed passage are provided. The device includes a detection unit that is adapted to be transported through the passage, and the detection unit includes a radiation source and an x-ray fluorescence detector. The radiation source is configured to emit a radiation emission toward the inner surface of the passage to excite a portion of the inner surface, and the x-ray fluorescence detector is configured to detect a resulting x-ray emission from the portion of the inner surface to identify a material deposit on the inner surface. The detection unit can identify material deposits at successive positions along a length of the passage and thereby generate a plurality of data points, each data point providing an indication of a material deposit existence for a corresponding position along the length of the passage.