JPH0449856U - - Google Patents
Info
- Publication number
- JPH0449856U JPH0449856U JP9179690U JP9179690U JPH0449856U JP H0449856 U JPH0449856 U JP H0449856U JP 9179690 U JP9179690 U JP 9179690U JP 9179690 U JP9179690 U JP 9179690U JP H0449856 U JPH0449856 U JP H0449856U
- Authority
- JP
- Japan
- Prior art keywords
- gas
- thin film
- metal thin
- resistance value
- filled electrical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000010409 thin film Substances 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 4
- 238000012806 monitoring device Methods 0.000 claims description 3
- 239000002274 desiccant Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 2
- 239000010408 film Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Description
第１図はこの考案に係るガス封入電気機器用ガ
ス監視装置の一実施例の構成を示す図、第２図は
同別の実施例を示す図、第３図はＳＦ６ガス中に
おける銀Ａｇの電気抵抗の変化を示すグラフ、第
４図は従来のガス封入電気機器用ガス監視装置の
構成を示す図である。
図中、２０は筺体、２１は金属薄膜、２２は導
体、２３はヒータ、２４は乾燥剤、２６は抵抗値
検出装置である。
Fig. 1 is a diagram showing the configuration of one embodiment of a gas monitoring device for gas-filled electrical equipment according to this invention, Fig. 2 is a diagram showing another embodiment of the same, and Fig. 3 is a diagram showing silver Ag in SF 6 gas. FIG. 4 is a diagram showing the configuration of a conventional gas monitoring device for gas-filled electrical equipment. In the figure, 20 is a housing, 21 is a metal thin film, 22 is a conductor, 23 is a heater, 24 is a desiccant, and 26 is a resistance value detection device.
Claims (1)
かつ低湿度を維持するための乾燥剤を設けたガス
封入電気機器の内部に設けられ、外部から混入し
た酸素と反応して酸化され、電気抵抗値を変化さ
せる所定膜厚を有する金属薄膜と、 前記ガス封入電気機器の内部に設けられ、前記
金属薄膜の外部から混入した酸素による酸化を促
進するために前記金属薄膜を加熱する加熱手段と
、 前記金属薄膜に接続され、前記ガス封入電気機
器の外部へ気密的に導出された導体と、 前記ガス封入電気機器の外部で前記導体に接続
され、前記金属薄膜の抵抗値の変化を検出する抵
抗値検出手段と、 を具備するガス封入電気機器用ガス監視装置。[Scope of Utility Model Registration Claim] A gas-filled electric device that is equipped with an insulating gas at a low pressure close to atmospheric pressure and a desiccant to maintain low humidity, and is used to prevent a metal thin film having a predetermined film thickness that is oxidized by reacting with the gas to change the electrical resistance value; a heating means for heating the metal thin film; a conductor connected to the metal thin film and led out in an airtight manner to the outside of the gas-filled electrical equipment; and a conductor connected to the conductor outside of the gas-filled electrical equipment to heat the metal thin film. A gas monitoring device for a gas-filled electrical device, comprising: a resistance value detection means for detecting a change in the resistance value of the gas-filled electrical device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9179690U JPH0449856U (en) | 1990-08-31 | 1990-08-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9179690U JPH0449856U (en) | 1990-08-31 | 1990-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0449856U true JPH0449856U (en) | 1992-04-27 |
Family
ID=31827744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9179690U Pending JPH0449856U (en) | 1990-08-31 | 1990-08-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0449856U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012157349A1 (en) * | 2011-05-18 | 2012-11-22 | 三菱電機株式会社 | Water concentration detecting device |
-
1990
- 1990-08-31 JP JP9179690U patent/JPH0449856U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012157349A1 (en) * | 2011-05-18 | 2012-11-22 | 三菱電機株式会社 | Water concentration detecting device |
| JP5159992B2 (en) * | 2011-05-18 | 2013-03-13 | 三菱電機株式会社 | Moisture concentration detector |
| US9201033B2 (en) | 2011-05-18 | 2015-12-01 | Mitsubishi Electric Corporation | Water-concentration detection device |
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