Sight Glass Adapter Assembly for Larger Pipe Fitting Viewports
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Solution Overview
Problem
Conventional sight glasses have small viewing areas and are difficult to attach to pipe fittings, requiring different sizes for various fittings and often having a rod assembly positioned to one side, making manipulation within the fitting difficult to view.
Innovation Solution
A sight glass assembly with a housing and adapter system that includes a transparent viewport and an annular retaining ring, allowing for customizable attachment to pipe fittings and featuring a stiffener to prevent viewport flexing under fluid pressure, enabling improved visibility through a larger viewport area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional sight glasses are used with small viewing areas, then the device complexity is reduced, but the visibility into the pipe fitting is insufficient
Solution Approach 1:
The sight glass assembly is divided into separate components: a housing containing the viewport, and a separate adapter that couples to the pipe fitting. This segmentation allows the viewport to be larger while keeping each component manageable in complexity, as they can be manufactured and assembled independently.
Solution Approach 2:
The adapter serves as an intermediary component between the housing/viewport assembly and the pipe fitting. It simplifies the overall device complexity by providing a standardized interface that couples the larger viewport housing to various fitting sizes, eliminating the need for custom-sized sight glasses for each fitting.
2Adaptability or versatility
If conventional sight glasses are mounted with flanges, then the attachment is standardized, but the adaptability to different fitting sizes is reduced
Solution Approach 1:
The adapter is designed with universal functionality to couple to different pipe fitting sizes. It features an internal thread configuration that can accommodate various fitting bores, allowing a single adapter design to work with multiple fitting sizes, thereby improving adaptability without requiring custom manufacturing for each size.
Solution Approach 2:
The adapter incorporates adjustable parameters through its threading geometry, allowing it to be configured for different fitting sizes. The internal threads can be designed with specific pitch and diameter variations to match different standard fitting sizes, enabling one adapter design to adapt to multiple applications through parameter variation rather than complete redesign.
3Ease of operation
If the rod assembly is positioned to one side of the sight glass, then the manufacturing is simplified, but the ease of manipulation within the fitting is reduced
Solution Approach 1:
The rod assembly is repositioned from a side-mounted configuration to a central axial position within the adapter bore. This dimensional change allows the rod to be manipulated directly through the center of the viewport, improving visibility of manipulation actions. The rod passes through the adapter along its central axis, aligning with the viewport for optimal observation.
4Area of stationary object
If the viewport is made larger to improve visibility, then the visibility into the fitting is enhanced, but the viewport becomes more susceptible to flexing under fluid pressure
Solution Approach 1:
The viewport is designed as a thin-walled transparent structure that can be made from materials with appropriate flexibility characteristics. By selecting suitable transparent materials and optimizing wall thickness, the viewport achieves a balance between maintaining a large viewing area and providing sufficient resistance to fluid pressure without excessive flexing.
Solution Approach 2:
The viewport can be constructed from composite materials that combine transparency with enhanced mechanical strength. Using transparent composite materials or laminated glass structures allows the viewport to maintain large dimensions while resisting flexing under pressure, as the composite structure provides both optical clarity and structural rigidity.
Data Source
AI summary
A sight glass assembly can comprise a housing defining an inner housing surface, an outer housing surface, a first housing end, and an opposed second housing end, the inner housing surface defining a housing bore; an adapter defining an inner adapter surface, an outer adapter surface, a first adapter end coupled to the housing, and an opposed second adapter end, the inner adapter surface defining an adapter bore, the outer adapter surface defining a central portion disposed between the first adapter end and the second adapter end, the central portion defining a shoulder contacting the second housing end of the housing; and a transparent viewport positioned in the housing bore such that the interior of a pipe fitting is viewable through the housing bore, the transparent viewport, and the adapter bore.