Sniffer Probe Bypass Opening for Detection Range and Localization
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Solution Overview
Problem
Existing sniffer gas leak detectors face a trade-off between rapid detection at a distance and accurate leak localization, with high gas flow improving detection range but reducing localization accuracy, and low flow enhancing accuracy but causing pressure changes.
Innovation Solution
A sniffer probe with a bypass opening or attachment that allows selective control of gas flow, enabling high flow for distant detection and low flow for precise localization, using a closure or detachable bypass to manage gas flow distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If high gas flow is used through the gas inlet, then detection distance is improved, but localization accuracy deteriorates
Solution Approach 1:
The gas flow path is segmented into two separate channels: a first channel (gas inlet) for drawing gas from a larger area to enable distant detection, and a second channel (bypass opening) for drawing gas from a localized area for precise leak localization. This segmentation allows each channel to be optimized for its specific function, resolving the contradiction between detection distance and localization accuracy.
2Measurement precision
If low gas flow is used through the gas inlet, then localization accuracy is improved, but detection distance deteriorates
Solution Approach 1:
The patent combines two gas flow paths with different flow rates and sampling areas into a single gas detection system. The first channel provides low-flow, high-precision sampling for localization, while the second channel provides high-flow, long-distance sampling. Both streams are merged and fed to the gas detector, enabling the system to achieve both localization accuracy and detection distance simultaneously.
3Productivity
If high gas flow is drawn through the gas inlet, then detection speed is improved, but localization precision deteriorates
Solution Approach 1:
The detection function is segmented into two parallel sampling channels: the first channel (gas inlet) operates at high flow rate for rapid detection over distance, while the second channel (bypass opening) operates at low flow rate for precise leak localization. This functional segmentation resolves the contradiction between detection speed and localization precision by dedicating each channel to its optimal operating mode.
4Measurement precision
If low gas flow is drawn through the gas inlet, then localization precision is improved, but detection speed deteriorates
Solution Approach 1:
The system merges two gas streams with different flow characteristics into a unified detection process. The first channel provides high-flow sampling for rapid detection, while the second channel provides low-flow sampling for precise localization. By combining both streams, the system achieves both high detection speed and high localization precision simultaneously, resolving the contradiction between these two performance metrics.
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 rapid detection at greater distances while maintaining or improving localization accuracy by managing gas flow through a bypass mechanism, minimizing interference with the main flow.
Implementation Method 1
a vacuum pump for sucking gas from the atmosphere through the gas inlet and feeding it to the gas detector
Data Source
Figure 1~3
Figure 4~5
AI summary
A sniffer probe (10) for a gas leak detector (18), which gas leak detector has a vacuum pump (20) for drawing in gas through the sniffer probe in accordance with the sniffing principle and a gas detector (22) for analyzing the gas flow drawn in, the sniffer probe comprising: - a gas inlet (12) for the gas flow drawn in, - a gas outlet (14), which can be connected to the gas leak detector, and - a channel (16), which gas-conductingly connects the gas inlet to the gas outlet, is characterized in that the sniffer probe has a bypass opening (30), which gas-conductingly connects a portion of the channel located between the gas inlet (28) and the gas outlet (26) to the outer environment (32) of the sniffer probe, the bypass opening having an actuatable closure (36) for selectively opening and closing the bypass opening.