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US 7,029,519 B2Granted
System and method for gas recycling incorporating gas-insulated electric device
AssigneeKabushiki Kaisha Toshiba
InventorsToshiyuki Uchii, Katsumi Suzuki, Motoharu Shiiki
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Abstract
A gas recycling system which has a carbon dioxide collecting device for collecting gas containing carbon dioxide from a carbon dioxide source. In the system, at least part of the gas containing sulfur hexafluoride used as an electric insulation medium in a gas-insulated electric device is replaced with the carbon dioxide obtained by the carbon dioxide collecting device.
Claims12
A gas recycling system comprising:
- carbon dioxide collecting means for collecting gas containing carbon dioxide from a carbon dioxide source;
- and
- replacing means for replacing at least part of gas containing sulfur hexafluoride used as an electric insulation medium in a gas-insulated electric device, with the carbon dioxide obtained by the carbon dioxide collecting means.
A gas recycling method comprising:
- collecting gas containing carbon dioxide from a carbon dioxide source;
- and
- replacing at least part of gas containing sulfur hexafluoride used as an electric insulation medium in a gas-insulated electric device, with the carbon dioxide obtained by the carbon dioxide collecting step.
A gas-insulated electric device comprising:
- at least one electric conductor;
- a tank containing the at least one electric conductor;
- a solid insulator connected to the tank;
- and
- insulation gas sealed in the tank,
- wherein the insulation gas includes carbon dioxide which has been stored after being collected as gas containing carbon dioxide from a carbon dioxide source and increased in carbon dioxide purity in the gas containing carbon dioxide.
3 more elements
A sulfur hexafluoride supplying system comprising:
- collecting means for collecting gas containing sulfur hexafluoride emitted from a gas-insulated electric device by replacing the gas containing sulfur hexafluoride with an electric insulation gas having a lower global warming potential than the gas containing sulfur hexafluoride;
- refining means for increasing purity of sulfur hexafluoride in the gas containing sulfur hexafluoride collected by the collecting means;
- and
- a container for storing the gas containing sulfur hexafluoride increased in purity of sulfur hexafluoride by the refining means.
1 more element
A gas-insulated electric device comprising:
- at least one electric conductor;
- a tank containing the at least one electric conductor;
- a solid insulator connected to the tank;
- and
- insulation gas sealed in the tank, the insulation gas having a lower global warming potential than sulfur hexafluoride,
- wherein at least part of the tank was used for containing sulfur hexafluoride as an electric insulation medium.
3 more elements
Dependencies are inferred from the claim text.