Backpressure Testing Calibration for Parallel Part Inspection
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Solution Overview
Problem
Existing methods for backpressure testing of manufactured parts, such as filters, are inefficient and costly, leading to the possibility of defective parts being overlooked due to the high cost and long cycle times of current testing apparatuses, such as the SuperFlow flowbench, which are not suitable for in-line testing.
Innovation Solution
A method and system for backpressure testing that involves calibrating a backpressure testing unit using reference parts, setting upper and lower limits, and using these positions to assess the backpressure of manufactured parts, allowing for parallel testing and reduced time consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a SuperFlow flowbench is used for backpressure testing, then measurement accuracy is improved, but testing time and cost increase significantly
Solution Approach 1:
The testing system is divided into multiple independent testing positions (first testing position, second testing position, etc.) that can operate simultaneously. Each position has its own flow generator and measurement capabilities, allowing parallel testing of multiple manufactured parts without requiring a single large, expensive flowbench.
Solution Approach 2:
Instead of using one expensive reference flowbench for all measurements, the system creates multiple copies of the testing capability at each testing position. Each position replicates the essential measurement functions, enabling parallel testing while maintaining measurement accuracy through calibration against reference parts.
2Measurement precision
If a SuperFlow flowbench is used for backpressure testing, then measurement accuracy is improved, but device cost increases
Solution Approach 1:
The expensive reference flowbench functionality is segmented and distributed across multiple independent testing positions. Each position uses simpler, less expensive components (individual flow generators, basic pressure sensors) that collectively provide the same overall measurement capability as a single expensive flowbench.
Solution Approach 2:
The system replaces the need for a single expensive, complex reference flowbench with multiple simpler testing positions that use cheaper components. The reference parts are used temporarily for calibration and then can be reused or replaced, rather than requiring continuous use of the expensive flowbench.
3Reliability
If 100% of manufactured parts are tested for backpressure conformity, then product reliability is improved, but testing time and resources increase
Solution Approach 1:
The testing system segments the production flow into multiple parallel testing positions, each capable of independently testing manufactured parts. This allows 100% inspection of all parts while maintaining high productivity, as multiple parts can be tested simultaneously rather than sequentially.
Solution Approach 2:
Reference parts are pre-calibrated against the reference flowbench to establish baseline backpressure values. This preliminary calibration creates reference data that can be quickly compared against manufactured parts during production testing, eliminating the need for each part to be tested on the expensive flowbench while maintaining accuracy.
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
Enables efficient testing of 100% of manufactured parts within a reasonable time frame, reducing the need for extensive testing on costly reference units and improving throughput by allowing parallel testing.
Implementation Method 1
creating a flow through the or each testing position
Implementation Method 2
measuring a backpressure measurement of the or each manufactured part
Data Source
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AI summary
According to various aspects of this disclosure, there is provided a method of backpressure testing manufactured parts, the method comprising: obtaining one or more reference parts and determining a reference backpressure measurement for each reference part indicative of the backpressure of that reference part when or if tested on a reference testing unit; calibrating one or more testing positions of a backpressure testing unit using the one or more reference parts; setting an upper backpressure limit and a lower backpressure limit for each of the one or more testing positions; and thereafter using the one or more testing positions to assess the backpressure of one or more manufactured parts.