Flexible Tritium Injection System for Constant Flow
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Solution Overview
Problem
Conventional tritium handling systems face challenges in maintaining a constant flow of tritium gas to fusion power systems due to pressure drops in reservoirs, leading to unusable gas volumes and complexity from electronic components that malfunction in high radiation and electromagnetic environments.
Innovation Solution
A constant pressure tritium injection system with a process chamber that can expand and contract, and a regulating chamber adjacent to it, using a movable separator and inert gas pressure control to manage tritium delivery, allowing for accurate metering and minimizing dead volumes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional reservoir systems are used to store and deliver tritium gas, then the system structure is simple, but pressure drops occur during delivery leading to unusable gas volumes and inability to maintain constant flow
Solution Approach 1:
The patent employs a flexible membrane that dynamically adjusts the process chamber volume in response to pressure changes. As the regulating chamber pressure varies during tritium delivery, the flexible membrane expands or contracts to maintain constant process chamber pressure, enabling continuous constant-flow delivery without leaving unusable gas in the system.
Solution Approach 2:
The patent introduces a regulating chamber with inert gas as an intermediary system between the tritium reservoir and the fusion power system. This regulating chamber acts as a buffer that absorbs pressure fluctuations, allowing the process chamber to maintain constant pressure and flow rate throughout the entire tritium delivery process.
2Measurement precision
If electronic components are used in tritium handling systems, then automated control and measurement are improved, but reliability decreases due to malfunction in high radiation and electromagnetic environments
Solution Approach 1:
The patent designs the system to use the physical properties of the gases and the flexible membrane itself for measurement and control. The flexible membrane's natural expansion and contraction in response to pressure changes provides inherent feedback, eliminating the need for electronic sensors and actuators that would be unreliable in the radiation environment while maintaining precise metering capability.
Solution Approach 2:
The patent replaces complex, expensive, and unreliable electronic components with simple, radiation-tolerant mechanical elements. The flexible membrane and pressure-regulating mechanism are designed as robust, maintenance-free components that can withstand the harsh radiation and electromagnetic environment without malfunctioning, effectively using simpler substitutes for complex electronic systems.
3Stability of the object's composition
If rigid chamber structures are used, then manufacturing precision is easier to achieve, but adaptability decreases when volume adjustment is needed for constant pressure maintenance
Solution Approach 1:
The patent uses a flexible membrane to form part of the process chamber structure, allowing the chamber volume to adapt dynamically while maintaining constant pressure. The flexible membrane provides the necessary compliance to adjust volume in response to pressure changes without requiring complex mechanical adjustment mechanisms, achieving both pressure stability and adaptability through material flexibility rather than structural complexity.
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 a constant and efficient delivery of tritium gas to fusion power systems, minimizing waste and reducing system complexity by using radiation- and interference-tolerant sensors for precise metering.
Implementation Method 1
a process chamber comprising tritium and having at least one outlet, wherein walls of the process chamber include at least one flexible wall
Implementation Method 2
using a movable separator and inert gas pressure control to manage tritium delivery
Data Source
AI summary
Techniques are described for delivering a metered flow of tritium gas to a fusion power system at a constant (or substantially constant) flow without feedback control being necessary, and while allowing all (or almost all) of the tritium in a reservoir to be delivered to the system. A constant pressure (isobaric) tritium injection system is described comprising a process chamber, at least part of which is flexible, and a regulating chamber arranged adjacent to the process chamber. Tritium in the process chamber may be pushed out of the injection system by managing the pressure of a regulating gas in the regulating chamber. As the pressure of the regulating gas increases, this causes the process chamber to be compressed due to the flexible portion(s) of the process chamber, thereby increasing the pressure of the tritium gas.