Automatic Gas Sampling System for High-Temperature Simulators
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Solution Overview
Problem
Current high-temperature and high-pressure simulators for oil and gas generation studies have low use efficiency and accuracy in gas composition detection, requiring manual control and resulting in high labor and experimental costs.
Innovation Solution
An automatic sampling and detection system for high-temperature and high-pressure simulators, comprising an automatic control program and a vacuum system that includes multiple manifolds, valves, and a gas chromatograph, allowing for continuous cooling, depressurization, and automated gas metering and analysis within a closed high-vacuum system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual control and off-line detection methods are used, then the system is simpler to operate, but the use efficiency of the simulator is low and labor costs are high
Solution Approach 1:
The patent replaces manual mechanical operations with an automated control system that coordinates electronic valves, pumps, and detectors. The control system automatically manages the complex sequence of cooling, depressurizing, separating, and analyzing gas samples, eliminating manual intervention while improving productivity.
Solution Approach 2:
The system is designed to automatically perform the complete gas analysis workflow without external intervention. The control system self-manages the coordination between cooling devices, pressure control, gas-liquid separation, and chromatographic detection, making the complex system serve itself through automated sequencing.
2Measurement precision
If manual sampling and off-line detection are used, then the device complexity is lower, but the accuracy and preciseness of gas composition detection are not high
Solution Approach 1:
The patent introduces a gas-liquid separator as an intermediary device between the high-temperature high-pressure environment and the gas chromatograph. This separator automatically divides the simulation products into gas and liquid phases, ensuring that only purified gas enters the detection system, thereby improving measurement precision while managing complexity through functional specialization.
Solution Approach 2:
The patent replaces manual sampling and injection operations with an automated gas chromatograph system that directly receives and analyzes gas samples. The electronic control system automates the injection, separation, and detection processes, improving accuracy by eliminating human error while managing complexity through integrated automation.
3Productivity
If automated on-line detection system is implemented, then the productivity and measurement precision are improved, but the device complexity increases
Solution Approach 1:
The control system is designed as a universal coordinator that manages multiple functions: temperature control, pressure regulation, valve sequencing, pump operation, and detection coordination. By creating a multi-functional control core, the system improves productivity through automation while containing complexity through functional integration rather than separate dedicated systems for each function.
Solution Approach 2:
The system implements continuous on-line detection where gas samples are automatically and continuously introduced into the gas chromatograph without interruption. The automated control system maintains continuous operation of the detection process, improving productivity by eliminating the discontinuous nature of manual sampling and analysis.
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 system enhances the efficiency and precision of gas composition detection by eliminating manual steps and reducing labor and costs, enabling on-line automatic sampling and detection of simulation products in a high-temperature and high-pressure state.
Implementation Method 1
passed through the pressure controller, the gas-liquid separator, and the cold trap for twice continuous cooling and depressurizing
Implementation Method 2
passed through the pressure controller, the gas-liquid separator, and the cold trap for twice continuous cooling and depressurizing
Implementation Method 3
after the gas volume is metered, the gas enters into an empty gas chromatograph
Implementation Method 4
achieve high-temperature and high-pressure simulator on-line gas automatic sample introduction and detection system, complete on-line detection of accumulated gas and stage gas
Data Source
AI summary
Disclosed is a system for automatic sampling and detection of on-line gas by high-temperature and high-pressure simulator and a detection method thereof. A vacuum manifold I is successively connected to a pressure controller, a gas-liquid separator, a gas automatic metering collector, a first trace quantitative gas collector, and a mechanical pump. On a vacuum manifold II, a high-low pressure convertor, a second trace quantitative gas collector, a gas transferring device, a heavy oil trap, a filtering trap, and a pressure gage head are connected successively. In the present invention, discharged simulation products, enter an empty gas chromatograph at a normal temperature and a normal pressure after treatment, completing on-line detection of an accumulated gas and a stage gas, and improving accuracy of gas composition measurement.