Compressed Air Leak Detection in Preform Shaping Equipment
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Solution Overview
Problem
Current methods for detecting leaks in compressed air systems used in container preform forming devices are inefficient, leading to increased production costs and reduced effectiveness due to unnoticed leaks until significant pressure loss occurs, causing unplanned production interruptions.
Innovation Solution
A systematic leak test drive is implemented, allowing for planned detection of leaks outside production times, using automated pressure monitoring to identify leaks in specific areas of the system, such as valves and distributors, reducing energy consumption and maintenance costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If leak detection is performed only when whistling noise occurs, then detection simplicity is maintained, but production downtime increases due to severe pressure loss
Solution Approach 1:
The patent implements regular scheduled leak detection runs that proactively identify leaks before they cause severe pressure loss. The control device automatically executes detection sequences at predetermined intervals, performing the detection action in advance before critical failure occurs, thus preventing production downtime while maintaining systematic oversight of the compressed air system
2Measurement precision
If systematic leak detection runs are implemented, then leak detection precision improves, but device complexity increases
Solution Approach 1:
The patent divides the compressed air system into multiple separable areas (first area with compressed air distributor, second area with valves, third area with consumers) that can be tested independently. The control device executes segmented detection sequences for each area, allowing precise identification of leak locations while using existing system components rather than adding complex new hardware
Solution Approach 2:
The system uses its own compressed air supply and existing shut-off elements to perform self-diagnosis. The control device manipulates existing valves and monitors pressure changes within the system itself, eliminating the need for external detection equipment and reducing overall system complexity while achieving precise leak detection
3Loss of energy
If leaks are detected early, then energy consumption decreases, but detection system complexity increases
Solution Approach 1:
The control device continuously monitors pressure changes in different system areas and uses this feedback to automatically determine the presence and location of leaks. The system compares expected pressure values with actual measurements, providing real-time feedback that enables early leak detection and immediate corrective action, reducing energy consumption through timely intervention
Solution Approach 2:
The patent replaces complex mechanical leak detection methods with automated control logic that uses pressure sensing and electronic decision-making. The control device automatically executes detection sequences, analyzes pressure data, and identifies leaks without requiring complex mechanical detection apparatus, reducing system complexity while enabling continuous monitoring and early detection to minimize energy loss
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 reduces production costs and increases system effectiveness by early detection of leaks, preventing acoustic notification and enabling timely replacement of faulty components, thus minimizing energy consumption and maintaining production efficiency.
Implementation Method 1
devices are used that reshape a container preform by applying compressed air
Implementation Method 2
it can be determined separately for each area whether compressed air is escaping therefrom, in particular by determining a temporal course of air pressure in this area
Data Source
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AI summary
The invention relates to a method for leakage detection in a device (1) for shaping container preforms, comprising a compressed air system connected to a compressed air source (3) and having at least two regions which are fluidically connected and can be separated from one another and/or from the environment by means of blocking elements. The method involves an automatically performed leakage test run, in which at least one of the blocking elements and/or the compressed air supply is directed into the compressed air system in such a way that it can be separately determined for each region whether compressed air is escaping.