Multistage Pressure Regulator With Thermal Control for Vapor Samples
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Solution Overview
Problem
Existing vapor gas sampling systems face challenges in maintaining accurate pressure and temperature control during depressurization, leading to potential condensation and damage to downstream analyzers, and are often not dynamically adjustable or adaptable for varying gas compositions.
Innovation Solution
A compact, adjustable, and calibratable multistage pressure regulating device with integrated thermal control, featuring a housing with pressure regulating valves and a heating device, which dynamically adjusts pressure and temperature to maintain vapor phase integrity and prevent condensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If multistage pressure reduction is applied to vapor gas samples, then the pressure is reduced to safe levels for downstream analyzers, but temperature control becomes insufficient leading to Joule-Thomson/dew point dropout condensation
Solution Approach 1:
The pressure reduction process is divided into multiple stages with intermediate heating zones. Each stage reduces pressure incrementally while thermal control elements restore temperature between stages, preventing cumulative cooling effects that would cause condensation.
Solution Approach 2:
Thermal control elements act as intermediaries between pressure reduction stages. These elements actively compensate for the cooling effect of each pressure drop by adding heat, thereby mediating between the pressure reduction function and the temperature maintenance requirement.
2Reliability
If existing pressure regulating systems are used, then pressure control is provided, but the systems are not dynamically adjustable or adaptable for varying gas compositions
Solution Approach 1:
The pressure regulating system incorporates dynamically adjustable elements that allow real-time modification of pressure reduction parameters. The system can adapt its operation based on detected gas composition changes, transitioning from static to dynamic control to maintain reliability across varying conditions.
Solution Approach 2:
The system enables change of operational parameters such as pressure reduction ratios, heating temperatures, and flow rates based on detected gas composition. By adjusting these parameters dynamically, the system maintains reliable pressure control while adapting to different vapor gas compositions.
3Stress or pressure
If pressure reduction is applied without adequate thermal control, then pressure is reduced to safe levels, but condensation occurs damaging downstream analyzers
Solution Approach 1:
Thermal control elements are positioned to preemptively counteract the cooling effect of pressure reduction before it can cause condensation. By applying heat in advance at each intermediate stage, the system prevents the harmful condensation effect rather than correcting it after occurrence.
Solution Approach 2:
The system converts the potentially harmful cooling effect of pressure reduction into a beneficial controlled thermal process. By actively managing the temperature profile during pressure reduction, the cooling effect is transformed into a controlled thermal gradient that prevents condensation while maintaining efficient pressure reduction.
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 ensures accurate and precise measurement of vapor gas samples by maintaining the vapor phase, preventing condensation and damage to analyzers, and allowing for dynamic adjustment to suit different gas compositions and pressures.
Implementation Method 1
a heating device disposed within the stem configured to heat vapor sample passing through the plurality of pressure regulating valves
Implementation Method 2
each of said plurality of pressure regulating valves being switchable between a non-pressure regulating mode and a pressure regulating mode for passing a vapor sample to an adjacent downstream pressure regulating valve at a select regulated pressure
Implementation Method 3
means for enhanced distribution of thermal energy from the heating device to the plurality of pressure regulating valves
Data Source
AI summary
A multi-stage pressure regulation system, device with enhanced thermal distribution for reducing the pressure of gas passing through a gas sample conditioning system. The device and method allow for automatic and/or manual configuration settings for regulating different types of gas having different profiles while still avoiding dew point dropout thereby ensuring accurate sample analysis at a downstream analyzer. The pressure regulating device includes a housing having a core, a vapor sample input port, a plurality of openings on an upper surface, a plurality of pressure regulating valves configured to reduce the pressure of a vapor sample, an assembly having a base and substantially central stem orthogonal to the base and extending axially therefrom, the stem being disposed within the core, and an adjunct for enhanced distribution of thermal energy from the heating device to the plurality of pressure regulating valves.