Leakage Inspection Device with Circulation Passage and Blower
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Solution Overview
Problem
Conventional leakage inspection methods are inefficient and inaccurate due to the need for extensive gas enclosure and discharge processes, and are limited by the size of the inspection object, which affects detection accuracy and requires complex processes, leading to variability in results.
Innovation Solution
A leakage inspection device with a circulation passage and blower that circulates tracer gas around a detector, allowing for uniform distribution and detection of leaks regardless of object size, using a blower to stir and direct gas flow effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional gas enclosure and discharge processes are used for leakage inspection, then detection can be performed, but inspection time increases and efficiency decreases
Solution Approach 1:
The patent extracts the gas circulation function from the traditional enclosure-discharge process. By introducing a circulation passage and blower, the tracer gas is continuously circulated through the inspection object without requiring complete enclosure and discharge cycles, thereby reducing inspection time while maintaining detection accuracy.
Solution Approach 2:
The circulation passage enables continuous circulation of tracer gas through the inspection object. Instead of discrete enclosure and discharge steps, the gas flow continues throughout the inspection process, allowing persistent detection of leaks without interrupting the useful action of gas circulation.
2Measurement precision
If tracer gas is circulated close to the blower, then detection sensitivity increases, but gas distribution uniformity decreases
Solution Approach 1:
The patent positions the detector in a different spatial dimension relative to the blower - specifically at a location where gas flows after being circulated through the inspection object. This dimensional arrangement allows the detector to capture tracer gas that has already distributed uniformly through the object, achieving both sensitivity and uniformity simultaneously.
Solution Approach 2:
The circulation passage is designed with specific local characteristics - it draws gas from locations away from the blower and directs it through paths that ensure uniform distribution before reaching the detector. This local quality control in the passage design achieves both uniform gas distribution and maintained detection sensitivity.
3Adaptability or versatility
If inspection chamber size is increased to accommodate larger objects, then versatility improves, but detection accuracy decreases
Solution Approach 1:
The circulation passage system provides a universal solution that works across different inspection chamber sizes. By actively circulating tracer gas through defined paths rather than relying on passive diffusion, the system maintains effective tracer gas distribution and detection accuracy whether the chamber is small or large, thereby achieving versatility without sacrificing precision.
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 enables accurate leakage inspection of objects of various sizes without complex gas replacement or pressure adjustments, reducing inspection time and maintaining high detection accuracy by ensuring uniform tracer gas distribution.
Implementation Method 1
a blower disposed in the circulation passage to circulate gas by sucking from the inspection chamber through the suction port and by blowing out from the blowout port
Implementation Method 2
a detector configured to detect the tracer gas leaked from the inspection object and contained in the gas flowing through the circulation passage
Data Source
AI summary
A leakage inspection device includes an inspection chamber in which an inspection object is disposed to be filled with a tracer gas, and a circulation passage which connects a suction port disposed in the inspection chamber and a blowout port disposed at a position away from the suction port in the inspection chamber with each other. The leakage inspection device includes a blower disposed in the circulation passage to circulate gas by sucking from the inspection chamber through the suction port and by blowing out from the blowout port. The leakage inspection device includes a detector configured to detect the tracer gas leaked from the inspection object and contained in the gas flowing through the circulation passage at a position separated by a predetermined distance or more from the blower toward the blowout port in the circulation passage.