Dissolved Gas Sensor Ventilation Tube Design
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Solution Overview
Problem
Conventional dissolved-gas measurement devices inaccurately measure gas concentrations due to significant differences between sensor and ventilation hole installations, leading to unmeasured gas discharge by natural ventilation.
Innovation Solution
A dissolved-gas measurement device with a pipe holding part, a gas storage part, and a ventilation tube that includes a gas sensor between the storage part and a ventilation hole, allowing for accurate measurement and natural discharge of permeated gas, with the ventilation tube's orientation adjustable based on gas density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the sensor and ventilation hole are installed at greatly different positions, then gas can be discharged by natural ventilation, but the gas concentration cannot be accurately measured
Solution Approach 1:
The gas sensor and ventilation hole are merged into a single integrated structure (the ventilation tube), allowing both measurement and ventilation functions to coexist at the same location. This resolves the contradiction by eliminating the spatial separation that caused measurement inaccuracy while preserving natural ventilation capability.
Solution Approach 2:
The ventilation tube serves multiple functions simultaneously: it acts as both the measurement chamber for the gas sensor and the discharge pathway for natural ventilation. This multi-functionality allows the system to achieve accurate measurement and effective ventilation without requiring separate components at different positions.
2Device complexity
If the sensor is placed far from the gas storage space, then ventilation is simplified, but part of the gas is not measured
Solution Approach 1:
The sensor is positioned within the ventilation tube that directly connects to the gas storage space, merging the measurement location with the ventilation pathway. This ensures all gas passing through the ventilation system is measured while maintaining a simple ventilation structure.
3Measurement precision
If the sensor is placed close to the gas storage space, then measurement accuracy improves, but ventilation efficiency decreases
Solution Approach 1:
The ventilation tube is designed to serve dual purposes: as the measurement chamber for the sensor and as the efficient discharge pathway for ventilation. This multi-functional design ensures that placing the sensor close to the gas storage space does not hinder ventilation efficiency, as the same structure facilitates both measurement and gas discharge.
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 effective and accurate measurement of gas concentrations in aqueous solutions by ensuring that permeated gas is measured by the sensor during natural ventilation, improving measurement accuracy by considering gas density.
Implementation Method 1
a gas storage part that is a space for storing gas that permeates the pipe
Implementation Method 2
The ventilation tube includes a gas sensor that measures the concentration of the specific gas flowing into the ventilation tube from the gas storage part
Implementation Method 3
a ventilation hole that discharges the gas to outside the ventilation tube
Data Source
Figure 1
Figure 2
AI summary
Provided a dissolved-gas measurement device that can effectively measure the concentration of gas dissolved in aqueous solution of the gas flowing through a pipe while continuing to discharge, by natural ventilation, gas in an enclosed space for storing the gas that permeates the pipe. The dissolved-gas measurement device, which measures the concentration of a specific gas dissolved in the aqueous solution of the specific gas flowing through the pipe that the specific gas permeates, includes a pipe holding part, a gas storage part, and a ventilation tube. The ventilation tube includes a gas sensor and a ventilation hole. The gas sensor is arranged in the ventilation tube to be located between the gas storage part and the ventilation hole.