Integrated Gas Sampling Head Minimizing Leak Points
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Solution Overview
Problem
Conventional gas sampling devices are prone to leaks and contamination due to multiple threaded and compression connections, leading to inefficient gas flow paths and false readings in gas analyzers, especially in the natural gas industry where water vapor and hydrogen sulfide measurements are affected by surface adsorption and desorption.
Innovation Solution
A compact gas sampling device design with minimized connections and surface area, featuring a block member with a gas passageway, a liquid separator with a porous membrane, and a metering valve system, eliminating tubing and reducing dead spaces to prevent liquid collection and diffusion, ensuring accurate gas analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional gas sampling devices use multiple valves, flow meters, liquid separators, and filters joined by tubing and fittings, then the device can perform gas sampling and analysis functions, but the device is prone to leaks and has lengthy inefficient gas flow paths with high surface area and dead spaces
Solution Approach 1:
The patent integrates multiple sampling components (valves, flow meters, liquid separators, filters) into a single integrated sampling head assembly. This merging eliminates the need for multiple external connections via tubing and fittings, thereby reducing leak points while maintaining all necessary sampling functions. The integration directly addresses the contradiction by combining multiple functions into one reliable unit.
Solution Approach 2:
The sampling head assembly is designed as a universal multi-functional component that performs gas sampling, flow metering, liquid separation, and filtration simultaneously. This multi-functionality eliminates the need for separate dedicated components for each function, reducing the overall number of connections and potential leak points while maintaining comprehensive sampling capability.
2Productivity
If conventional gas sampling devices use about four feet of tubing connecting components, then the device can connect all necessary components, but the tubing creates lengthy inefficient gas flow paths with high surface area and dead spaces where liquids and contaminants collect
Solution Approach 1:
By integrating all sampling components into a single compact assembly, the patent eliminates lengthy external tubing connections. The internal flow paths within the integrated assembly are minimized and optimized, reducing the overall gas flow path length from four feet to a compact internal configuration, thereby improving gas flow efficiency and eliminating dead spaces.
Solution Approach 2:
The patent extracts and eliminates the unnecessary tubing from the system by integrating components directly. This removal of extraneous tubing eliminates the high surface area and dead spaces that caused liquid and contaminant collection, streamlining the gas flow path to only the essential routing needed for component operation.
3Measurement precision
If conventional gas sampling devices have high surface area tubing and dead spaces, then the device can connect components, but liquids and contaminants stick to surfaces and collect in dead spaces where there is insufficient flow to keep them entrained
Solution Approach 1:
The integrated sampling head assembly minimizes the total surface area exposed to the gas stream by consolidating components into a compact design. This reduction in surface area decreases the sites where liquids and contaminants can adsorb, while the integrated design ensures sufficient flow velocity throughout to prevent contaminant collection, thereby improving measurement precision.
Solution Approach 2:
The patent removes the extensive tubing surface area from the system by integrating components with minimal internal routing. This extraction of unnecessary surface area eliminates the adsorption sites that caused water vapor and contaminant collection, directly improving the accuracy of gas analysis by preventing false readings.
4Measurement precision
If conventional gas sampling devices have collected liquids and contaminants on surfaces and in dead spaces, then the device can operate, but these substances unexpectedly diffuse into the gas stream over time and produce false readings in the analyzer
Solution Approach 1:
The patent extracts and eliminates the dead spaces and excessive surface areas where contaminant collection occurred in conventional devices. By integrating components with minimized internal routing, the design removes the reservoirs where liquids and contaminants could accumulate and subsequently diffuse into the gas stream, preventing false analyzer readings.
Solution Approach 2:
The integrated sampling head assembly combines all components in a compact configuration that eliminates dead spaces between and within components. This merging ensures continuous sufficient flow velocity throughout the entire sampling path, preventing contaminant accumulation and diffusion, thereby protecting measurement 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
The solution minimizes leaks and liquid collection, providing accurate and consistent gas analysis by reducing the surface area and dead zones, thus enhancing the reliability of gas sampling devices for water vapor and other gas measurements in the natural gas industry.
Implementation Method 1
a liquid separator including a porous membrane that acts as a barrier to any liquid in the gas being sampled
Implementation Method 2
Liquids and other contaminants, especially water and hydrogen sulfide, tend to stick to those surfaces and collect in the dead spaces
Data Source
AI summary
A gas sampling device is disclosed. The gas sampling device includes a first block having at least a first opening. The first block includes at least a first passageway terminating at the first opening. The first opening may be in an exterior face of the first block. The gas sampling device includes a second block having at least a second opening. The second block includes at least a second passageway terminating at the first opening. The second opening may be in the exterior face of the second block. The first block and the second block may be adjacent and in contact with each other. The first passageway and the second passageway form a flow path, wherein the first block and the second block abut and contact each other, and the first opening and the second opening are aligned.