Compound Optical Coupler With Metallic Support Rings
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Solution Overview
Problem
Existing gamma detectors in mining and drilling operations face challenges with harsh environmental conditions, including high vibrations and shocks, which lead to degradation in performance due to the limitations of current support systems and optical couplers, particularly with elastomeric materials that are prone to resonance and thermal expansion issues, and require complex engineering and high costs for effective protection and accurate signal production.
Innovation Solution
The use of metallic support rings with friction to maintain a high resonant frequency and sliding friction for damping, combined with a compound optical coupler assembly featuring a self-wetting optical gel and a stiffening agent, such as Wacker and Sylgard, to stabilize the optical interface and reduce assembly complexities, along with O-rings for shock absorption, within a hermetically sealed shield to enhance durability and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If self-wetting optical coupling materials (e.g., Wacker) are used to achieve good optical coupling, then optical interface quality is improved, but the material exhibits viscous behavior and flows outward under vibration and loading, losing retaining force and degrading performance
Solution Approach 1:
The patent combines self-wetting optical coupling material with a retainer ring structure to create a composite system. The retainer ring provides mechanical stability and prevents material flow under vibration and loading, while the self-wetting material maintains optical coupling quality. This composite approach resolves the contradiction by integrating the advantages of both the optical material and the structural component.
Solution Approach 2:
The retainer ring acts as an intermediary element between the optical coupling material and the housing. It confines the self-wetting material at the optical interface, preventing outward flow under vibration and loading conditions. This intermediary structure enables the material to maintain its optical coupling function without suffering from its inherent viscous flow problem.
2Object-affected harmful factors
If elastomeric materials are used for support and protection, then shock and vibration protection is improved, but the materials are prone to resonance and thermal expansion issues, degrading detector performance
Solution Approach 1:
The patent changes the material parameter from elastomeric to metallic for the support rings. This parameter change eliminates the resonance and thermal expansion problems inherent in elastomeric materials while maintaining the shock and vibration protection function. The metallic support rings provide dimensional stability and consistent mechanical properties under varying temperature and vibration conditions.
3Manufacturing precision
If precision fabrication and assembly tolerances are maintained to prevent oil loss, then optical coupling performance is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The retainer ring is installed beforehand to confine the optical coupling material within a defined space. This pre-confinement structure cushions against the effects of manufacturing tolerances by preventing material migration even when assembly tolerances are not extremely tight. The retainer ring creates a physical barrier that ensures optical coupling performance without requiring precision fabrication tolerances.
4Object-affected harmful factors
If armor and explosion-proof housing are added to protect the detector from harsh environments, then protection and durability are improved, but the available space is reduced and assembly complexity increases
Solution Approach 1:
The patent segments the protective structure into distinct functional components: an outer explosion-proof housing for environmental protection, and internal metallic support rings for mechanical support and shock isolation. This segmentation allows each component to be optimized for its specific function while minimizing overall space requirements. The support rings provide structural support without requiring the bulkier single-piece protective structures.
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 configuration provides a robust and cost-effective support mechanism that maintains high performance under harsh conditions, reduces resonance, and simplifies the assembly process while ensuring accurate optical coupling and protection from environmental stresses, thereby improving the reliability and longevity of gamma detectors.
Implementation Method 1
Optical couplers made from self-wetting type materials (e.g., Wacker) have also been used
Implementation Method 2
compound optical coupler assembly featuring a self-wetting optical gel
Implementation Method 3
The use of metallic support rings with friction to maintain a high resonant frequency and sliding friction for damping
Implementation Method 4
along with O-rings for shock absorption
Implementation Method 5
couple light from a scintillation element into a light detector device
Data Source
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AI summary
A support mechanism for protecting an object is described. The support system includes at least one support or friction ring for providing dynamic protection to the object. One embodiment includes a support ring having corrugated bumps. Another embodiment includes multiple support rings axially separated by spacers. In another embodiment a support mechanism is provided having at least one friction ring in combination with O-rings. A compound optical coupler is also described, which has a self-wetting clear optical coupling gel and an elastomeric load ring. In another aspect a compound optical coupler assembly comprises a self- wetting optical coupling gel and also an amount of a stiffening agent.