Pipeline Pig Detector With Flexible Cable Depth Adjustment
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Solution Overview
Problem
Existing pipeline pig detectors require rigid extension components that are specific to a known installation depth, limiting flexibility and requiring precise depth measurement at the time of purchase.
Innovation Solution
The use of an upper and lower housing with a flexible push/pull control cable allows the trigger and indicator to be separated by any distance, up to the full length of the cable, enabling adjustable installation depth without the need for precise depth measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If rigid extension components are used to separate the trigger and indicator, then the depth of cover can be predetermined, but the device loses flexibility and cannot accommodate deviations in installation depth
Solution Approach 1:
The patent replaces rigid extension components with a flexible cable that can be adjusted to different lengths. The cable allows the indicator to be positioned at various distances from the trigger, accommodating different installation depths without requiring precise predetermined specifications. The flexibility of the cable enables adaptation to field conditions while maintaining functional separation between the buried trigger and above-ground indicator.
2Device complexity
If rigid extension components are used, then the structure is simple, but the device requires precise depth measurement at the time of purchase and allows no deviation
Solution Approach 1:
The flexible cable replaces rigid extensions, eliminating the need for precise depth measurements during purchase. The cable can be cut and adjusted to the required length based on actual installation conditions, significantly reducing measurement precision requirements while maintaining a relatively simple overall device structure.
3Stability of the object's composition
If the trigger and indicator are separated by a fixed distance using rigid components, then the device structure is stable, but the installation is limited to specific depths
Solution Approach 1:
The patent uses a flexible cable to connect the trigger and indicator, replacing rigid fixed-distance components. This dynamic solution maintains structural stability through proper cable tensioning and anchoring while allowing the installation distance to be adjusted according to various depth requirements, significantly expanding the adaptability of the device.
Data Source
AI summary
A device for indicating the passage of a pig beyond a predetermined location in a pipeline comprising a pig detector connected to a pipeline and communicating with the interior of the pipeline through an opening at the location. The device may comprise a trigger mounted in the pig detector and adapted to project into the interior of the pipeline, an indicator housing located at a distance from the pig detector; an indicator being vertically slidably mounted within the indicator housing; and a push/pull control cable with a first end attached to the trigger and a second end attached to the indicator, such that, when a pig moves in the pipeline past the trigger and actuates the trigger, the push/pull control cable allows the indictor to move upwardly beyond the indicator housing so as to provide a visual indication that the pig has passed by.