JPH044221Y2 - - Google Patents
Info
- Publication number
- JPH044221Y2 JPH044221Y2 JP1982144345U JP14434582U JPH044221Y2 JP H044221 Y2 JPH044221 Y2 JP H044221Y2 JP 1982144345 U JP1982144345 U JP 1982144345U JP 14434582 U JP14434582 U JP 14434582U JP H044221 Y2 JPH044221 Y2 JP H044221Y2
- Authority
- JP
- Japan
- Prior art keywords
- moisture
- medium
- measuring device
- gas
- hydrogen
- 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.)
- Expired
Links
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 24
- 238000009835 boiling Methods 0.000 claims description 21
- 239000007789 gas Substances 0.000 claims description 13
- 229910052739 hydrogen Inorganic materials 0.000 claims description 10
- 239000001257 hydrogen Substances 0.000 claims description 10
- 238000004090 dissolution Methods 0.000 claims description 4
- 239000000376 reactant Substances 0.000 claims description 4
- CSDQQAQKBAQLLE-UHFFFAOYSA-N 4-(4-chlorophenyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine Chemical compound C1=CC(Cl)=CC=C1C1C(C=CS2)=C2CCN1 CSDQQAQKBAQLLE-UHFFFAOYSA-N 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 238000001816 cooling Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- CJFUEPJVIFJOOU-UHFFFAOYSA-N 2-perfluorobutyltetrahydrofuran Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C1CCCO1 CJFUEPJVIFJOOU-UHFFFAOYSA-N 0.000 description 1
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- FYJQJMIEZVMYSD-UHFFFAOYSA-N perfluoro-2-butyltetrahydrofuran Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C1(F)OC(F)(F)C(F)(F)C1(F)F FYJQJMIEZVMYSD-UHFFFAOYSA-N 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Description
【考案の詳細な説明】
この考案は少なくともその一部が高沸点媒体、
特に凝縮した状態において水素ガスの溶解が無視
しうる程度に小さい高沸点媒体のガスからなる機
器内混合ガス状媒体中の水分濃度を測定する水分
測定装置に関する。[Detailed explanation of the invention] This invention is based on at least a part of the high boiling point medium.
In particular, the present invention relates to a moisture measuring device for measuring the moisture concentration in a mixed gaseous medium in an apparatus, which is made of a high boiling point medium gas in which dissolution of hydrogen gas is negligible in a condensed state.
絶縁性気体と、主として冷却を目的とする比較
的沸点の高い媒体との混合体を使用する電気機
器、例えば蒸発冷却式変圧器では絶縁性気体とし
て六弗化硫黄（SF6）ガス（昇華点−63.8℃）、比
較的沸点の高い媒体としてパーフロロブチルテト
ラヒドロフラン（C8F16Ｏ）（例えば米国のミネソ
タ マイニング アンド マニユフアクチユアリ
ング社製、FC−75；沸点102℃）を使用すること
がある。C8F16０は常温では液状の高沸点媒体で
あつて、これを変圧器内の発熱部に散布して蒸発
させ、その蒸発潜熱を効果的に利用して冷却を行
なうわけである。 In electrical equipment that uses a mixture of an insulating gas and a medium with a relatively high boiling point primarily for cooling purposes, such as evaporative cooling transformers, the insulating gas is sulfur hexafluoride (SF 6 ) gas (sublimation point -63.8°C), perfluorobutyltetrahydrofuran (C 8 F 16 O) (for example, FC-75 manufactured by Minnesota Mining and Manufacturing Co., USA; boiling point 102°C) is used as a medium with a relatively high boiling point. There is. C 8 F 16 0 is a high boiling point medium that is liquid at room temperature, and is sprayed onto the heat generating parts within the transformer to evaporate, and the latent heat of evaporation is effectively utilized for cooling.
ところで電気機器内の絶縁物表面あるいは電気
機器内壁の塗膜等にはどうしても水分が含まれて
おり、これが電気機器内のガス状媒体中に拡散す
る。また、機器のシール部を通しても水分が機器
内に侵入してくる。しかし、電気機器においては
絶縁性能を大きく左右する不純物である水分は所
定の値以下に維持する必要があり、そのため適宜
電気機器内のガス状媒体中の水分濃度の測定が行
なわれる。 By the way, the surfaces of insulators in electrical equipment or the coatings on the inner walls of electrical equipment inevitably contain moisture, which diffuses into the gaseous medium within the electrical equipment. Moisture also enters the device through the seal portion of the device. However, in electrical equipment, it is necessary to maintain water, which is an impurity that greatly affects insulation performance, below a predetermined value, and therefore the water concentration in the gaseous medium within the electrical equipment is measured as appropriate.
運転中の電気機器では、機器内で熱が発生して
いるため、機器内の絶縁、冷却混合媒体は常に周
囲温度より高い状態にある。このような状態にあ
るガス状混合媒体中の水分濃度を測定する場合、
測定は通常室温で行なわれるため、機器と測定器
との間の媒体採取管路を保温しないと、採取した
ガス状媒体中の高沸点媒体（例えば前述したC8
F16０）が採取管路内で温度低下するにつれて凝
縮して測定器に流入したり、測定器内で凝縮した
りして正しい測定の妨げとなる。また、採取した
ガス状媒体中の水分が凝縮した高沸点媒体中に溶
け込んで正しい水分濃度の測定を行なうことがで
きない問題もある。 When electrical equipment is in operation, heat is generated within the equipment, so the insulation and cooling mixture inside the equipment are always at a higher temperature than the ambient temperature. When measuring the water concentration in a gaseous mixed medium under such conditions,
Since measurements are usually carried out at room temperature, the media collection line between the instrument and the measuring device must be kept warm, otherwise high-boiling media (e.g. the C 8
As the temperature decreases in the collection pipe, F 16 0) condenses and flows into the measuring device, or condenses within the measuring device, interfering with correct measurement. Another problem is that water in the sampled gaseous medium dissolves into the condensed high-boiling medium, making it impossible to measure the water concentration correctly.
一方、機器と測定との間の媒体採取管路を保温
するとこの管路内での凝縮は起こらないものの、
測定器が機器内の媒体温度に接近してしまうた
め、測定器としての特性が変わつてしまう。 On the other hand, if the medium sampling line between the equipment and the measurement is kept warm, condensation will not occur in this line, but
Because the temperature of the measuring device approaches the temperature of the medium inside the device, the characteristics of the measuring device change.
この考案は上述の如き問題点を一挙に解決する
ためになされたものであつて、水分を安定な水素
ガスに変換すると共に高沸点媒体を測定器より前
段で積極的に凝縮させてこれが測定器に入らない
ようにし、前記水素の濃度を測定することによつ
て水分濃度としてとらえることができるようにし
た水分測定装置を提供するものであり、以下図面
を参照してこの考案を詳細に説明する。 This idea was devised to solve the above-mentioned problems all at once.It converts water into stable hydrogen gas and actively condenses a high-boiling point medium before the measuring instrument. The purpose of this invention is to provide a moisture measuring device that prevents hydrogen from entering the water and allows the moisture concentration to be determined by measuring the concentration of hydrogen.This device will be explained in detail below with reference to the drawings. .
まず最初に第１図に従来の水分測定装置を示
す。第１図において１は蒸発冷却式変圧器、２は
変圧器１からその内部のガス状混合媒体を採取す
る管路、３は開閉弁、４は流量調整弁、５は水分
測定器である。この場合には管路２は保温されて
おらず、採取したガス状媒体中の高沸点媒体であ
るC8F16０の凝縮が生じ、先に述べた如き問題が
生じる。 First of all, FIG. 1 shows a conventional moisture measuring device. In FIG. 1, 1 is an evaporative cooling type transformer, 2 is a pipe line for collecting the gaseous mixed medium inside the transformer 1, 3 is an on-off valve, 4 is a flow rate regulating valve, and 5 is a moisture measuring device. In this case, the pipe line 2 is not kept warm and condensation of C 8 F 16 0, which is a high boiling point medium, occurs in the gaseous medium sampled, resulting in the problems described above.
第２図はこの考案による水分測定装置の一実施
例を示しており、１乃至３は第１図のものと同じ
である。６はこの考案による水分測定装置であつ
て、６１は採取したガス状混合媒体中の水分を対
応する量の水素ガスに変換する変換器であつてそ
のための反応剤６１１を収納している。この反応
剤としては水とのみ反応する水素化カルシウム
（CaH2）粒子を使用することができ、その場合
CaH2＋2H2O→Ca（OH）2＋2H2
の反応により水分が対応する量の水素ガスに変換
される。６１２，６１３はフイルターである。 FIG. 2 shows an embodiment of the moisture measuring device according to this invention, and 1 to 3 are the same as those in FIG. 6 is a moisture measuring device according to this invention, and 61 is a converter for converting the moisture in the sampled gaseous mixed medium into a corresponding amount of hydrogen gas, and houses a reactant 611 for this purpose. Calcium hydride (CaH 2 ) particles, which react only with water, can be used as the reactant, in which case water is converted to a corresponding amount of hydrogen by the reaction CaH 2 + 2H 2 O→Ca(OH) 2 + 2H 2 . converted to gas. 612 and 613 are filters.
６２は採取したガス状媒体中のC8F16Ｏを凝縮
させるための冷却器であつて変換器６１の後段か
つ上方に配置されており、かつ冷却のための例え
ば水冷ジヤケツト６２１を有する。６２２，６２
３は冷却水を給排水する管路である。冷却器６２
はガス状媒体を周囲温度よりやや低い温度に冷却
しうる能力を有しておれば良い。６３は水素濃度
測定器で冷却器６２の上方に配置されており、例
えばガスクロマトグラフを使用することができ
る。６４は変換器６１、冷却器６２および測定器
６３を相互に接続する管路、６５は流量調整弁で
ある。 Reference numeral 62 denotes a cooler for condensing C 8 F 16 O in the collected gaseous medium, which is disposed after and above the converter 61, and has, for example, a water-cooled jacket 621 for cooling. 622,62
3 is a pipe line for supplying and discharging cooling water. Cooler 62
It is sufficient that the cooling medium has the ability to cool the gaseous medium to a temperature slightly lower than the ambient temperature. A hydrogen concentration measuring device 63 is disposed above the cooler 62, and a gas chromatograph can be used, for example. 64 is a pipe line that interconnects the converter 61, the cooler 62, and the measuring device 63, and 65 is a flow rate regulating valve.
次に動作について説明する。運転中の蒸発冷却
式変圧器１から導出されたガス状混合媒体は初期
を除いて変圧器の運転温度にほぼ等しい温度で変
換器６１に入り、ここでガス状混合媒体中の水分
のみが前記の反応式に示すように反応して対応す
る量の水素ガスに変換される。このように生成し
た水素ガスは他のガス状媒体と共に冷却器６２に
流入する。ここでガス状混合媒体中のC8F16Ｏが
冷却によりほとんど凝縮してしまう。水素ガスの
凝縮液C8F16Ｏへの溶解は無視しうる程度に小さ
いため、採取したガス状媒体中の水分濃度に対応
した水素とSF6ガスを含みかつ高沸点媒体が除去
された残余のガス状媒体が流量調整弁６５を通し
て測定器６３へ流入し、ここで例えばガスクロマ
トグラフにより測定が行なわれる。ガスクロマト
グラフでの測定により、単位体積当たりのSF6ガ
スに対する水素ガスの比（例えば重量比）を知る
ことができる。一方、採取したガス状混合媒体中
のSF6とC8F16Ｏとの比は変圧器本体１内と同じ
であり、この比はわかつているし、水素ガスの量
は水分の量に対応しているので変圧器１内のガス
状混合媒体中の水分濃度は容易に知ることができ
る。このように水分濃度は重量比で求めることが
できるが、同様に容積比で求めることもでき、こ
の点は如何なる方法でも良い。また、高沸点媒体
の比率が多い場合には、図示の如く凝縮液の返送
路６６を設け、開閉弁６７を開放することにより
返送してもよい。勿論、開閉弁６７はガス状媒体
採取時には閉じられる。 Next, the operation will be explained. The gaseous mixed medium drawn from the evaporatively cooled transformer 1 in operation enters the converter 61 at a temperature approximately equal to the operating temperature of the transformer, except initially, where only the moisture in the gaseous mixed medium is It reacts as shown in the reaction equation and is converted into the corresponding amount of hydrogen gas. The hydrogen gas thus generated flows into the cooler 62 together with other gaseous media. Here, most of the C 8 F 16 O in the gaseous mixed medium is condensed due to cooling. Since the dissolution of hydrogen gas in the condensate C 8 F 16 O is negligible, the residue containing hydrogen and SF 6 gas corresponding to the water concentration in the collected gaseous medium and from which the high-boiling medium has been removed is The gaseous medium flows through the flow regulating valve 65 into the measuring device 63, where measurements are carried out, for example by means of a gas chromatograph. By measuring with a gas chromatograph, the ratio (for example, weight ratio) of hydrogen gas to SF 6 gas per unit volume can be determined. On the other hand, the ratio of SF 6 and C 8 F 16 O in the sampled gaseous mixed medium is the same as in the transformer body 1, and this ratio is known, and the amount of hydrogen gas corresponds to the amount of moisture. Therefore, the moisture concentration in the gaseous mixed medium inside the transformer 1 can be easily determined. In this way, the water concentration can be determined by weight ratio, but it can also be determined by volume ratio, and any method may be used in this respect. Furthermore, when the proportion of high boiling point medium is large, a condensate return path 66 may be provided as shown in the figure, and the condensate may be returned by opening an on-off valve 67. Of course, the on-off valve 67 is closed when the gaseous medium is sampled.
以上のようにこの考案によれば、採取したガス
状混合媒体中の高沸点媒体は測定器に入る前に積
極的に凝縮、除去され、かつ水素濃度測定器は冷
却器の上方に配置されるため、凝縮液が測定器に
流入したり、測定器内で凝縮したりすることがな
く、かつ機器から測定器までの管路を保温する必
要もなく、しかも、冷却器を変換器の後段に配置
することで、水分は高沸点媒体を凝縮させる以前
に、対応する量の高沸点媒体に溶解しにくい水素
ガスに変換し、水分が凝縮液に溶解することがな
いようにしてから測定するようにし、更に冷却器
を変換器の上方に設けることで冷却器内への水素
ガスの流入をスムーズにしたので、正確な水分濃
度測定が可能となる効果が得られる。 As described above, according to this invention, the high boiling point medium in the sampled gaseous mixed medium is actively condensed and removed before entering the measuring device, and the hydrogen concentration measuring device is placed above the cooler. This prevents condensate from flowing into the measuring instrument or condensing inside the measuring instrument, and there is no need to keep the pipes from the instrument to the measuring instrument warm. Moreover, the cooler can be placed after the converter. In this way, water is converted into hydrogen gas that is difficult to dissolve in the corresponding amount of high-boiling medium before condensing the high-boiling medium, and the water is not dissolved in the condensate before being measured. Furthermore, by providing the cooler above the converter, hydrogen gas flows smoothly into the cooler, resulting in the effect that accurate water concentration measurement is possible.
以上、高沸点媒体としてC8F16Ｏを例示したが、
これに限られるものではなく、凝縮した状態で水
素ガスの溶解が無視しうる程度に小さいものであ
ればC6F14（例えば大日本インキ株式会社社製、商
品名フルテツクpp2、沸点57℃）、C7F14（例えば大
日本インキ株式会社製、商品名フルテツクpp2、
沸点102℃）等他の種々なものであつて良いし、
水分を水素に変換する反応剤も水素化カルシウム
以外のものであつても良い。測定器もガスクロマ
トグラフに限られるものではない。 Above, C 8 F 16 O was exemplified as a high boiling point medium, but
It is not limited to this, but as long as the dissolution of hydrogen gas is negligible in the condensed state, C 6 F 14 (for example, manufactured by Dainippon Ink Co., Ltd., product name Furutech PP 2 , boiling point 57℃) ), C 7 F 14 (for example, manufactured by Dainippon Ink Co., Ltd., product name Furutech pp2,
(boiling point 102℃) and other various substances may be used.
The reactant for converting water into hydrogen may also be other than calcium hydride. The measuring instrument is also not limited to a gas chromatograph.
第１図は従来の水分測定装置を概略的に示す
図、第２図はこの考案による水分測定装置の一実
施例を示す部分断面図であり、図中１は蒸発冷却
式変圧器、６１は変換器、６２は冷却器、６３は
測定器である。
FIG. 1 is a diagram schematically showing a conventional moisture measuring device, and FIG. 2 is a partial sectional view showing an embodiment of the moisture measuring device according to this invention. 62 is a cooler, and 63 is a measuring device.
Claims (1)
なる機器内ガス状混合媒体中の水分濃度を測定
する水分測定装置であつて、前記高沸点媒体が
その凝縮した状態において水素ガスの溶解が無
視しうる程度に小さいものであるものにおい
て、前記機器からのガス状混合媒体採取管路
に、水分を水素ガスに変換する変換器と前記高
沸点媒体を凝縮させる冷却器とを、前記冷却器
が前記変換器の後段かつ上方に位置するように
設け、更に、前記冷却器の上方に水素濃度測定
器を設け、前記変換器で生成し、前記冷却器を
通過した水素ガス量を前記水素濃度測定器によ
り測定することにより水分濃度を測定するよう
にした水分測定装置。 ２ 変換器が水分を水素ガスに変換する反応剤と
して水素化カルシウムを収納している実用新案
登録請求の範囲第１項記載の水分測定装置。[Claims for Utility Model Registration] 1. A moisture measuring device for measuring the moisture concentration in a gaseous mixed medium in an apparatus, at least a part of which is a gas of a high boiling point medium, wherein the high boiling point medium is in a condensed state. in which the dissolution of hydrogen gas is negligible, a converter for converting moisture into hydrogen gas and a cooler for condensing the high boiling point medium are connected to the gaseous mixed medium collection line from the device. and a hydrogen concentration measuring device is provided above the cooler so that the hydrogen produced in the converter and passed through the cooler is A moisture measuring device that measures moisture concentration by measuring the amount of gas using the hydrogen concentration measuring device. 2. The moisture measuring device according to claim 1, wherein the converter contains calcium hydride as a reactant for converting moisture into hydrogen gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14434582U JPS5947866U (en) | 1982-09-22 | 1982-09-22 | Moisture measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14434582U JPS5947866U (en) | 1982-09-22 | 1982-09-22 | Moisture measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5947866U JPS5947866U (en) | 1984-03-30 |
| JPH044221Y2 true JPH044221Y2 (en) | 1992-02-07 |
Family
ID=30321913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14434582U Granted JPS5947866U (en) | 1982-09-22 | 1982-09-22 | Moisture measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5947866U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54143197A (en) * | 1978-04-28 | 1979-11-08 | Nippon Carbide Kogyo Kk | Device for measuring moisture content of solid sample |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5725682Y2 (en) * | 1979-01-18 | 1982-06-04 |
-
1982
- 1982-09-22 JP JP14434582U patent/JPS5947866U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54143197A (en) * | 1978-04-28 | 1979-11-08 | Nippon Carbide Kogyo Kk | Device for measuring moisture content of solid sample |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5947866U (en) | 1984-03-30 |
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