Gas insulation apparatus
According to an embodiment, a gas insulation apparatus (e.g., a gas circuit breaker) includes a high-voltage unit, a zeolite and an insulation gas in a closed vessel. The insulation gas is CO 2 gas or a gas including CO 2 gas as the main component. The zeolite is contained in a zeolite case and is placed under an insulation gas atmosphere. CO 2 is adsorbed on the zeolite before use of the gas insulation apparatus.
1. A gas insulation apparatus comprising:
a closed vessel;
a high-voltage unit arranged inside the closed vessel;
an insulation gas containing CO 2 filled in the closed vessel; and
a zeolite arranged in the insulation gas,
average pore diameter of the zeolite being in a range between 0.2 nm and 0.5 nm.
2. The gas insulation apparatus according to claim 1 , wherein
the insulation gas is a mixed gas mainly containing CO 2 and gas having a molecular diameter larger than that of CO 2 .
3. The gas insulation apparatus according to claim 1 , wherein
the zeolite is arranged above the high-voltage unit.
4. The gas insulation apparatus according to claim 1 , wherein
the gas insulation apparatus is a switchgear, and
the high-voltage unit comprising:
a fixed contact;
a movable contact arranged opposite to the fixed contact on a same axis as that of the fixed contact so as to contact or separate from the fixed contact, the movable contact being in a conductive state with the fixed contact when contacting the fixed contact and generating arc discharge between itself and the fixed contact when separating from the fixed contact; and
an insulation nozzle arranged so as to surround the arc discharge and to blow the insulation gas to the arc discharge.
5. The gas insulation apparatus according to claim 4 wherein
the insulation nozzle contains fluorine resin.
6. The gas insulation apparatus according to claim 4 , wherein
the zeolite is arranged at a position in which the insulation gas that has been blown to the arc discharge flows.
7. A gas insulation apparatus comprising:
a closed vessel;
a high-voltage unit arranged inside the closed vessel;
an insulation gas containing CO 2 filled in the closed vessel; and
a zeolite arranged in the insulation gas,
CO 2 being adsorbed to the zeolite before use of the gas insulation apparatus.
8. The gas insulation apparatus according to claim 7 , wherein
the insulation gas is a mixed gas mainly containing CO 2 and gas having a molecular diameter larger than that of CO 2 .
9. The gas insulation apparatus according to claim 7 , wherein
the zeolite is arranged above the high-voltage unit.
10. The gas insulation apparatus according to claim 7 , wherein
the gas insulation apparatus is a switchgear, and
the high-voltage unit comprising:
a fixed contact;
a movable contact arranged opposite to the fixed contact on a same axis as that of the fixed contact so as to contact or separate from the fixed contact, the movable contact being in a conductive state with the fixed contact when contacting the fixed contact and generating arc discharge between itself and the fixed contact when separating from the fixed contact; and
an insulation nozzle arranged so as to surround the arc discharge and to blow the insulation gas to the arc discharge.
11. The gas insulation apparatus according to claim 10 , wherein
the insulation nozzle contains fluorine resin.
12. The gas insulation apparatus according to claim 10 , wherein
the zeolite is arranged at a position in which the insulation gas that has been blown to the arc discharge flows.
13. A gas insulation apparatus comprising:
a closed vessel;
a high-voltage unit arranged inside the closed vessel;
an insulation gas containing CO 2 filled in the closed vessel; and
a zeolite arranged in the insulation gas,
the insulation gas being a mixed gas mainly containing CO 2 and gas other than CO 2 having a non-polar molecular structure.
14. The gas insulation apparatus according to claim 13 , wherein
the insulation gas is a mixed gas mainly containing CO 2 and gas having a molecular diameter larger than that of CO 2 .
15. The gas insulation apparatus according to claim 13 , wherein
the zeolite is arranged above the high-voltage unit.
16. The gas insulation apparatus according to claim 13 , wherein
the gas insulation apparatus is a switchgear, and
the high-voltage unit comprising:
a fixed contact;
a movable contact arranged opposite to the fixed contact on a same axis as that of the fixed contact so as to contact or separate from the fixed contact, the movable contact being in a conductive state with the fixed contact when contacting the fixed contact and generating arc discharge between itself and the fixed contact when separating from the fixed contact; and
an insulation nozzle arranged so as to surround the arc discharge and to blow the insulation gas to the arc discharge.
17. The gas insulation apparatus according to claim 16 , wherein
the insulation nozzle contains fluorine resin.
18. The gas insulation apparatus according to claim 16 , wherein
the zeolite is arranged at a position in which the insulation gas that has been blown to the arc discharge flows.
19. A gas insulation apparatus comprising:
a closed vessel;
a high-voltage unit arranged inside the closed vessel;
an insulation gas containing CO 2 filled in the closed vessel;
a zeolite arranged in the insulation gas; and
an oxidation catalyst arranged in the insulation gas so as to oxidize CO to CO 2 .
20. The gas insulation apparatus according to claim 19 , wherein
the insulation gas is a mixed gas mainly containing CO 2 and gas having a molecular diameter larger than that of CO 2 .
21. The gas insulation apparatus according to claim 19 , wherein
the zeolite is arranged above the high-voltage unit.
22. The gas insulation apparatus according to claim 19 , wherein
the gas insulation apparatus is a switchgear, and
the high-voltage unit comprising:
a fixed contact;
a movable contact arranged opposite to the fixed contact on a same axis as that of the fixed contact so as to contact or separate from the fixed contact, the movable contact being in a conductive state with the fixed contact when contacting the fixed contact and generating arc discharge between itself and the fixed contact when separating from the fixed contact; and
an insulation nozzle arranged so as to surround the arc discharge and to blow the insulation gas to the arc discharge.
23. The gas insulation apparatus according to claim 22 , wherein
the insulation nozzle contains fluorine resin.
24. The gas insulation apparatus according to claim 22 , wherein
the zeolite is arranged at a position in which the insulation gas that has been blown to the arc discharge flows.