Dielectric Insulation Gas Container for Condensation-Free Filling
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Solution Overview
Problem
Existing methods for filling electrical apparatuses with dielectric insulation media, such as SF6 alternatives, are complex and require separate containers, expensive mixing devices, or sophisticated heating to achieve a homogenous gas mixture, leading to inefficiencies and potential condensation issues.
Innovation Solution
A container system containing a mixture of an organofluorine compound and a carrier gas, like nitrogen, with a cricondentherm effect that maintains the mixture in a fully gaseous state at low temperatures, eliminating the need for heating and complex mixing equipment, ensuring a homogenous and stable dielectric strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a gas mixture is provided prior to filling using complex mixing devices, then the gas mixture can be homogenous with accurate component ratio, but the equipment cost and device complexity increase significantly
Solution Approach 1:
The gas mixture components are pre-filled into the container in liquid form at controlled ratios before use. This preliminary action eliminates the need for complex mixing devices during operation, as the mixing occurs automatically when the liquid evaporates and equilibrates in the target chamber.
Solution Approach 2:
A liquid carrier medium is used as an intermediary to deliver the gas mixture components. The liquid form allows precise pre-mixing of components, and upon evaporation, it delivers a homogenous gas mixture without requiring complex mixing equipment at the application site.
2Adaptability or versatility
If separate containers are used to add mixture components from two separate containers, then the components can be added independently, but the time required for homogenization increases and operation becomes more complex
Solution Approach 1:
Multiple gas mixture components that would traditionally require separate containers are combined into a single pre-mixed liquid formulation. This merging allows all components to be delivered through one container, eliminating sequential addition steps and reducing homogenization time as the components mix automatically upon evaporation.
Solution Approach 2:
The gas mixture components are supplied in liquid phase within a single container, then transition to gas phase in the target chamber. This phase transition enables automatic mixing and homogenization of all components simultaneously, eliminating the time delay associated with mechanical mixing of gaseous components from separate containers.
3Ease of operation
If filling starts from a liquefied mixture, then the filling process can be simplified, but the ratio of components changes with filling rate due to different boiling points
Solution Approach 1:
The formulation uses a liquid carrier medium with specific boiling point characteristics that enable consistent evaporation rates for all mixture components. By carefully selecting and formulating the liquid carrier, the patent ensures that component ratios remain stable during filling regardless of filling rate variations, resolving the issue of composition drift.
4Reliability
If heating devices are used to maintain gas mixture in gaseous state, then the dielectric strength can be maintained, but the energy consumption and device complexity increase
Solution Approach 1:
The patent utilizes the phase transition from liquid to gas of the pre-filled mixture components. The controlled evaporation of the liquid carrier medium naturally maintains all components in gaseous state without requiring external heating devices, thereby preserving dielectric strength while eliminating continuous energy consumption for heating.
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 container system allows for simple and efficient filling of electrical apparatuses with a homogenous gas mixture, maintaining sufficient dielectric strength across a range of temperatures without condensation, reducing storage and transportation complexities and costs.
Implementation Method 1
A container system containing a mixture of an organofluorine compound and a carrier gas, like nitrogen, with a cricondentherm effect that maintains the mixture in a fully gaseous state at low temperatures
Data Source
AI summary
A container for storing and transporting a dielectric insulation medium, including:a container interior for containing the dielectric insulation medium, and connecting means for connecting the container to an electrical apparatus of medium or high voltage and filling a housing of the electrical apparatus with the dielectric insulation medium, said dielectric insulation medium being a mixture ofan organofluorine compound or a mixture of organofluorine compounds as component A, the molar percentage of component A being in a range from 1 to 15 mol %, anda carrier gas compound or a mixture of carrier gas compounds other than an organofluorine compound as component B.The component B may include nitrogen, the molar percentage of nitrogen in the dielectric insulation medium being at least 65 mol %, and the minimum storage and transportation temperature of the container is equal or higher than the cricondentherm of the insulation medium.