Fluorescent X-Ray Sample Container With Pressure-Buffered Film Structure
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sample containers for fluorescent X-ray analyzers face issues with analytical films being damaged due to pressure differences, leading to potential ejection of liquid samples and damage to protective films, especially when operating in vacuum atmospheres.
Innovation Solution
A sample container design with a first receptacle, analytical film, protective receptacle, and pressure adjustment valve, featuring a connection hole with a smaller cross-sectional area than the first opening, to control pressure and restrict fluid flow, ensuring safe measurement of liquid samples in vacuum conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the area of the first opening is increased to enlarge the X-ray irradiation region, then the measurement sensitivity is improved, but the analytical film becomes more susceptible to damage due to pressure difference
Solution Approach 1:
The internal space of the first receptacle is divided into a first space and a second space separated by a partition wall with a connection hole. This segmentation allows the first space to have a larger opening area for X-ray irradiation while the second space acts as a buffer to reduce pressure differential effects on the analytical film.
Solution Approach 2:
The connection hole with smaller cross-sectional area acts as an intermediary element between the first and second spaces. It restricts fluid flow and pressure equalization, allowing the analytical film to withstand pressure differences while maintaining measurement capability through the larger first opening.
2Reliability
If the pressure inside the first receptacle is increased to prevent liquid sample boiling in vacuum, then the measurement reliability is improved, but the pressure difference may damage the analytical film
Solution Approach 1:
The first receptacle is segmented into two spaces that can be independently pressurized. The first space maintains higher pressure for reliability while the second space provides pressure buffering, allowing the analytical film to survive pressure differences.
Solution Approach 2:
The second space acts as a cushioning chamber that mitigates the impact of pressure differences on the analytical film. By providing this preliminary cushioning structure, the system can maintain high pressure in the first space for reliability without directly exposing the film to excessive pressure differential.
3Object-affected harmful factors
If the analytical film is damaged due to pressure difference, then liquid sample ejection occurs, but the protective receptacle with protective film can receive the liquid sample to prevent damage to the fluorescent X-ray analyzer
Solution Approach 1:
The protective receptacle with protective film is positioned beforehand to receive and contain any liquid sample that may be ejected if the analytical film is damaged. This preliminary protective measure prevents the liquid sample from reaching and damaging the fluorescent X-ray analyzer.
Solution Approach 2:
The protective film in the protective receptacle acts as an intermediary barrier between the liquid sample and the fluorescent X-ray analyzer. Even if the analytical film fails, this secondary protective barrier prevents direct contact between the liquid sample and sensitive analyzer components.
4Reliability
If a connection hole with smaller cross-sectional area than the first opening is provided, then fluid flow is restricted and protective film damage is prevented, but the device structure becomes more complex
Solution Approach 1:
The first receptacle is segmented into two spaces with a partition wall containing a connection hole. This segmentation, while adding structural elements, provides functional benefits by restricting fluid flow through the smaller connection hole compared to the larger first opening, thereby protecting the protective film from damage.
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 design prevents damage to protective films by controlling pressure differentials, allowing safe measurement of liquid samples in vacuum atmospheres without helium filling, enhancing measurement sensitivity and reliability.
Implementation Method 1
an analytical film that closes off the first opening and transmits X-rays
Implementation Method 2
a protective receptacle that includes a protective film for transmitting X-rays
Implementation Method 3
a pressure adjustment valve that adjusts a pressure inside the first receptacle
Implementation Method 4
a cross-sectional area of the connection hole is smaller than an area of the first opening
Implementation Method 5
a fluorescent X-ray analyzer, and measurement method... irradiating the liquid sample accommodated in the sample container with X-rays... and detecting fluorescent X-rays emitted from the liquid sample
Data Source
AI summary
A sample container for a fluorescent X-ray analyzer. The sample container includes a first receptacle that accommodates a liquid sample and has a first opening and a second opening; an analytical film that closes off the first opening and transmits X-rays; a protective receptacle that includes a protective film for transmitting X-rays and covers the analytical film; and a pressure adjustment valve that adjusts a pressure inside the first receptacle. The first receptacle has a first space facing the first opening, a second space facing the second opening, and a connection hole connecting the first space and the second space. A cross-sectional area of the connection hole is smaller than an area of the first opening.