Modular Enclosures for Raman Systems Hazardous Areas
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Solution Overview
Problem
Existing explosion-proof and flameproof enclosures for Raman spectroscopy systems are not cost-effective and practical for on-line process monitoring and control, as they are bulky, expensive, and do not adequately address the entire Raman system, including the laser excitation source and other subsystems, especially in hazardous environments.
Innovation Solution
The use of smaller, judiciously designed enclosures for specific subsystems of Raman analysis systems, incorporating optical and electrical feedthroughs, and employing wireless communications to reduce the number of physical connections, while meeting industry protection standards for explosion and flame resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single large enclosure is used to house the entire Raman system, then explosion-proof and flameproof protection is achieved, but the enclosure becomes bulky and expensive
Solution Approach 1:
The patent divides the Raman system into separate functional modules (laser excitation source, spectrograph, detector, controller) and places each in its own independently designed enclosure. This segmentation allows each enclosure to be optimized for its specific components and hazard level, avoiding the need for one large bulky enclosure while maintaining comprehensive explosion-proof and flameproof protection.
2Reliability
If high-power lasers are used for Raman spectroscopy, then reliable signal acquisition is achieved, but the risk of deflagration and combustion increases
Solution Approach 1:
The patent applies preliminary anti-action by designing enclosures that prevent the harmful effects (deflagration and combustion) from occurring in the first place. Each enclosure is designed with explosion-proof and flameproof characteristics, including containment structures and safety mechanisms that stop harmful effects before they can propagate outside the enclosure, allowing high-power lasers to be used safely.
3Adaptability or versatility
If multiple remote probe heads are coupled to a central instrument via separate fiber optic cables, then multiple sample points can be monitored, but the system complexity and number of connections increases
Solution Approach 1:
The patent merges multiple functional components into integrated modular units, each enclosed in its own enclosure. This consolidation reduces the number of separate connections needed between components while maintaining the ability to monitor multiple sample points through remote probe heads. The modular design allows for easier system configuration and reduces overall system complexity.
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
This approach provides cost-effective, efficient, and practical flame and explosion resistance for Raman analysis systems, enabling safe operation in hazardous environments by partitioning the system into smaller, specifically designed enclosures and reducing the need for bulky, expensive enclosures that compromise safety and cost-effectiveness.
Implementation Method 1
optical fibers are advantageously used to deliver excitation energy to a sample under investigation and to carry scattered radiation back to instrumentation for spectral analysis
Implementation Method 2
a spectrograph (i.e., spectrograph) for the detector... an optical grating operative to separate optical energy collected from the sample into a Raman spectral signal
Implementation Method 3
a detector for receiving the Raman spectral signal and converting the spectral signal into an electrical signal
Data Source
AI summary
Raman analysis systems are partitioned to provide for cost-effective flame resistance and explosion resistance, including relatively small enclosures associated with particular subsystems. One or more of an excitation source, spectrograph and/or controller are disposed in separate, flame-resistant or explosion-resistant enclosures. A remote optical measurement probe may also be disposed in a separate flame-resistant or explosion-resistant enclosure. A grating and a detector of the spectrograph may be disposed in separate enclosures, with sealed windows therebetween to deliver a Raman spectral signal from the optical grating to the detector. The sealed window of the detector enclosure may serve the dual purpose of maintaining flame resistance or explosion resistance while maintaining cooling within the enclosure. Wireless interfaces may be used for communications between the enclosures where practical to reduce or eliminate physical electrical feedthroughs.