Pressure Controlled Cargo Container Airtightness Testing
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Solution Overview
Problem
Manual air tightness testing of cargo containers is time-intensive and labor-straining, as it requires individual pressurization and leak detection in each container before shipment, often revealing leaks in the rear curtain, access panel gaskets, and bolt holes, which can compromise the container's airtightness during transit.
Innovation Solution
A pressure-controlled cargo container equipped with pressure transducers and a container controller that automates the airtightness testing by monitoring pressure changes and communicating alerts when the pressure drop duration falls outside acceptable ranges, allowing for in-transit testing and reducing manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual air tightness testing is performed on each container box, then leak detection accuracy is improved, but testing time and labor requirements increase significantly
Solution Approach 1:
The container box performs self-testing of its own airtightness using integrated pressure transducers and control systems. The container autonomously monitors its internal pressure, detects leaks, and communicates status without requiring manual intervention, thereby reducing labor time while maintaining detection accuracy.
Solution Approach 2:
The patent replaces manual mechanical testing procedures with electronic pressure sensing and automated control systems. Pressure transducers electronically monitor pressure changes, and the control system automatically interprets results, substituting human labor with automated electronic systems to reduce testing time while preserving leak detection capability.
2Reliability
If manual air tightness testing is performed on each container box, then container integrity is ensured, but workforce strain and operational complexity increase
Solution Approach 1:
The container box autonomously performs integrity verification through integrated sensors and control systems that automatically monitor pressure, detect anomalies, and report status. This self-service approach ensures container integrity without requiring complex manual testing procedures or specialized workforce.
Solution Approach 2:
The control system continuously monitors pressure data from transducers and provides real-time feedback on container integrity status. This automated feedback mechanism simplifies the testing procedure by eliminating manual interpretation steps while maintaining reliable integrity verification through systematic data collection and analysis.
3Productivity
If automated pressure monitoring systems are implemented, then testing efficiency is improved, but system complexity and initial investment increase
Solution Approach 1:
The control system serves multiple functions: it monitors pressure, detects leaks, determines container integrity, and communicates status. By consolidating these functions into a single integrated system rather than separate devices, the patent improves testing efficiency while minimizing the complexity increase that would result from multiple independent systems.
Solution Approach 2:
The control system acts as an intermediary between the pressure transducers and the external monitoring infrastructure. It processes raw pressure data, interprets results, and communicates status through standardized interfaces, thereby simplifying the overall system architecture while enabling automated high-efficiency testing operations.
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 automated system significantly reduces the time and labor required for airtightness testing, enabling efficient pre-load testing and ensuring container integrity by identifying leaks promptly, thus enhancing the reliability of cargo transport.
Implementation Method 1
one or more pressure transducers disposed within the container box, the one or more pressure transduces operatively connected to the container box, wherein the container box is configured for monitoring pressure within the container box with the pressure transducers
Data Source
AI summary
A container box, having: a container controller for controlling the container box, one or more pressure transducers disposed within the container box, the one or more pressure transduces operatively connected to the container box, wherein the container box is configured for monitoring pressure within the container box with the pressure transducers, the container box configured to perform an airtightness test, including: pressurizing the container box until pressure in the container box is above a first threshold; monitoring pressure in the container box to determine when pressure in the container box is proximate the first threshold; monitoring a first duration during which pressure in the contain box drops from the first threshold to a second threshold; determining whether the first duration is within an acceptable range, and when the duration is outside the acceptable range, communicating an alert to a container box monitoring implement.