发明名称 |
WATER-CONCENTRATION DETECTION DEVICE |
摘要 |
A water-concentration detection device is configured to detect a water concentration of insulating gas filled in a gas-insulated device. The water-concentration detection device includes: a gas chamber in which the insulating gas introduced from the gas-insulated device is enclosed; electrodes that are porous and are arranged to face each other within the gas chamber; a solid electrolyte membrane that is hydrogen-ion conductive and is held between and fixedly attached to the electrodes; an impedance measurement unit that measures an alternating-current impedance between the electrodes by applying an alternating-current voltage to the electrodes; a water-concentration detection unit that detects the water concentration of the insulating gas based on the alternating-current impedance measured by the impedance measurement unit; and a drying unit that removes water from an atmosphere in the gas chamber before the insulating gas is introduced into the gas chamber from the gas-insulated device. |
申请公布号 |
US2013313111(A1) |
申请公布日期 |
2013.11.28 |
申请号 |
US201213983074 |
申请日期 |
2012.04.02 |
申请人 |
NISHIDA CHIEKO;YABE TATSUYA;MITSUBISHI ELECTRIC CORPORATION |
发明人 |
NISHIDA CHIEKO;YABE TATSUYA |
分类号 |
G01N27/02 |
主分类号 |
G01N27/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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