JPH0472365B2 - - Google Patents
Info
- Publication number
- JPH0472365B2 JPH0472365B2 JP57232583A JP23258382A JPH0472365B2 JP H0472365 B2 JPH0472365 B2 JP H0472365B2 JP 57232583 A JP57232583 A JP 57232583A JP 23258382 A JP23258382 A JP 23258382A JP H0472365 B2 JPH0472365 B2 JP H0472365B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- moisture
- refrigerant
- insulated
- coil
- 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 - Lifetime
Links
- 239000003507 refrigerant Substances 0.000 claims description 26
- 238000001035 drying Methods 0.000 claims description 13
- 239000007789 gas Substances 0.000 description 32
- 239000012212 insulator Substances 0.000 description 10
- 239000003463 adsorbent Substances 0.000 description 7
- 238000009413 insulation Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000010257 thawing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- RVZRBWKZFJCCIB-UHFFFAOYSA-N perfluorotributylamine Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)N(C(F)(F)C(F)(F)C(F)(F)C(F)(F)F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F RVZRBWKZFJCCIB-UHFFFAOYSA-N 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 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
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/18—Liquid cooling by evaporating liquids
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Description
【発明の詳細な説明】
この発明は、蒸気圧の高い絶縁冷媒と、絶縁気
体を充填して運転されるガス絶縁電気機器に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to gas-insulated electric equipment that is operated by being filled with an insulating refrigerant having a high vapor pressure and an insulating gas.
この種の変圧器においては、変圧器コイルのコ
イル絶縁紙やプレスボード等の絶縁物から出る水
分（以下、コイル絶縁物水分という）が絶縁耐力
を低下させるので、この水分を除去する必要があ
る。 In this type of transformer, moisture that comes out of the transformer coil's insulators such as coil insulating paper and pressboard (hereinafter referred to as coil insulator moisture) reduces dielectric strength, so this moisture must be removed. .
従来、油入変圧器において、絶縁油中に溶解し
たコイル絶縁物水分は脱気処理によつて除去して
いるが、蒸発冷却式ガス絶縁変圧器の場合には、
蒸気圧の高い絶縁冷媒あるいは絶縁冷媒の蒸気を
脱気して水分だけを除去することは困難であつ
た。 Conventionally, in oil-immersed transformers, the moisture in the coil insulation dissolved in the insulating oil is removed by degassing, but in the case of evaporative cooling gas insulated transformers,
It has been difficult to remove only moisture by degassing the insulating refrigerant having a high vapor pressure or the vapor of the insulating refrigerant.
蒸発冷却式ガス絶縁電気機器の絶縁冷媒中の水
分除去方法としては実開昭56−43126号に示され
た例があり、この場合、機器タンク内下部に形成
される液体部分より、外部に配置された水分吸着
装置に絶縁冷媒液体を循環させ、一定期間後吸着
剤の取換えを行う構成が示されている。 An example of a method for removing moisture from the insulating refrigerant of evaporative cooling type gas-insulated electrical equipment is shown in Japanese Utility Model Application No. 56-43126. A configuration is shown in which an insulating refrigerant liquid is circulated through the moisture adsorption device, and the adsorbent is replaced after a certain period of time.
この構成の場合、絶縁冷媒液体中に含まれる水
分を吸着剤に吸着させて除去するものであるが、
電気機器内部の水分の大部分は絶縁冷媒の気体部
分にガス状態で存在するものであり、冷媒液体中
に、配置されている吸着剤には液体部分に溶解し
なければ到達せず、気体として存在する水分を効
果的に吸着させることはできない。 In this configuration, the moisture contained in the insulating refrigerant liquid is removed by adsorption to the adsorbent.
Most of the moisture inside electrical equipment exists in the gas state in the gas part of the insulating refrigerant, and it cannot reach the adsorbent placed in the refrigerant liquid unless it is dissolved in the liquid part, and it is released as a gas. It is not possible to effectively adsorb existing moisture.
この発明は上記問題を解消するためになされた
もので絶縁冷媒と絶縁気体の混合ガスが循環する
冷却器を有する絶縁冷媒循環路に未液化ガスを分
離する第２の気体ポンプと乾燥筒もしくは冷凍機
を有する気体循環路を並列して設け、この部分に
おいて、気体状態で存在するコイル絶縁物水分を
除去することにより絶縁耐力の低下を防ぐことが
できるガス絶縁電気機器を提供することを目的と
する。 This invention was made to solve the above problem, and includes an insulated refrigerant circuit having a cooler in which a mixed gas of an insulated refrigerant and an insulating gas is circulated, a second gas pump for separating unliquefied gas, and a drying tube or a refrigerator. The purpose of the present invention is to provide gas-insulated electrical equipment that can prevent a decrease in dielectric strength by installing gas circulation paths in parallel with each other and removing moisture in the coil insulator that exists in a gaseous state in this part. do.
以下この発明の一実施例を図によつて説明す
る。第１図はこの発明によるガス絶縁電気機器の
一実施例を示す構成図であり、第１図において、
１は蒸発冷却式ガス絶縁電気機器の変圧器タン
ク、２は変圧器鉄心、３は変圧器コイル、４は蒸
気圧の高い絶縁冷媒である。絶縁冷媒４は液体ポ
ンプ５によつて変圧器タンク１の底部から汲み上
げられて外部液体循環路６−１を経て変圧器コイ
ル３の上部から該変圧器コイル３にシヤワー状に
ふりかけられる。絶縁冷媒４は変圧器コイル３の
熱で気化され、その気化潜熱により変圧器コイル
３が冷却される。蒸発した絶縁冷媒４とコイル絶
縁物水分の混合ガスは、第１の外部配管６−２、
気体ポンプ７、冷却器８、第２の外部配管６−３
で形成される絶縁冷媒循環路の気体ポンプ７で第
１の外部配管６−２を通じて冷却器８に送られ
る。蒸気圧の高い絶縁冷媒４の蒸気は冷却器８で
液化され、第２の外部配管６−３を通じて変圧器
タンク１に戻される。 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing an embodiment of a gas insulated electric device according to the present invention, and in FIG. 1,
1 is a transformer tank of an evaporatively cooled gas insulated electric device, 2 is a transformer core, 3 is a transformer coil, and 4 is an insulating refrigerant with a high vapor pressure. The insulating refrigerant 4 is pumped up from the bottom of the transformer tank 1 by the liquid pump 5, passed through the external liquid circuit 6-1, and sprinkled onto the transformer coil 3 from the top thereof in a shower-like manner. The insulating refrigerant 4 is vaporized by the heat of the transformer coil 3, and the transformer coil 3 is cooled by the latent heat of vaporization. The mixed gas of the evaporated insulating refrigerant 4 and coil insulator moisture flows through the first external pipe 6-2,
Gas pump 7, cooler 8, second external piping 6-3
The gas is sent to the cooler 8 through the first external piping 6-2 by the gas pump 7 of the insulated refrigerant circulation path formed by. The vapor of the insulating refrigerant 4 having a high vapor pressure is liquefied in the cooler 8 and returned to the transformer tank 1 through the second external pipe 6-3.
第２の外部配管６−３に対して並列に分岐し、
第２の気体ポンプ９を備えた第３の外部配管６−
４と、乾燥筒１０と、乾燥筒１０内の吸着剤を着
脱可能とするための弁装置１１−１、１１−２で
形成される気体循環路が設けられている。乾燥筒
１０内にはシリカゲル、アルソあるいは活性アル
ミナの如き吸着剤が充填されている。 branched in parallel to the second external piping 6-3,
Third external piping 6- with second gas pump 9
4, a drying cylinder 10, and a gas circulation path formed by valve devices 11-1 and 11-2 for making the adsorbent in the drying cylinder 10 removable. The drying cylinder 10 is filled with an adsorbent such as silica gel, arso or activated alumina.
上述したごとく、冷却器８で液化された絶縁冷
媒４は第２の外部配管６−３を通じて変圧器タン
ク１の底部に戻されるが液化せずに冷却器８を出
た絶縁冷媒４とコイル絶縁物水分の混合ガスは第
２の気体ポンプ９により液化した絶縁冷媒４と分
離して第３の外部配管６−４へ吸引されて、乾燥
筒１０に送られ、該乾燥筒１０内でコイル絶縁物
水分が吸着剤に吸着して除去される。乾燥筒１０
内の吸着剤は定期的に新しいものと交換する。 As mentioned above, the insulating refrigerant 4 liquefied in the cooler 8 is returned to the bottom of the transformer tank 1 through the second external pipe 6-3, but the insulating refrigerant 4 and the coil insulator exit the cooler 8 without being liquefied. The mixed gas of substance and moisture is separated from the liquefied insulating refrigerant 4 by the second gas pump 9, and is sucked into the third external pipe 6-4, and sent to the drying cylinder 10, where the coil is insulated. Moisture is absorbed by the adsorbent and removed. Drying tube 10
Replace the absorbent inside with a new one regularly.
第２図は、この発明の他の実施例を示したもの
であつて、第１図の実施例とは、乾燥筒１０を冷
凍機１２−１で置換えた点が異り、コイル絶縁物
水分を凝固させ除去する。１１−３は冷凍機１２
−１のドレン弁である。絶縁冷媒４として例えば
商品名フロリナートを使用し、絶縁気体として
SF6ガスを用いる場合にはSF6ガス昇華点より、
若干高い−50℃程度まで冷却すればよい。 FIG. 2 shows another embodiment of the present invention, which differs from the embodiment in FIG. 1 in that the drying tube 10 is replaced with a refrigerator 12-1, and the coil insulator contains moisture. solidify and remove. 11-3 is refrigerator 12
-1 drain valve. For example, the product name Fluorinert is used as the insulating refrigerant 4, and the insulating gas is
When using SF6 gas, from the SF6 gas sublimation point,
It is sufficient to cool it to a slightly higher temperature of around -50°C.
凝固したコイル絶縁物水分、弁装置１１−１，
１１−２を閉じ、冷凍機１２−１の温度をあげて
解凍し、ドレン弁１１−３より排出除去される。
この実施例では、上記解凍中はコイル絶縁物水分
の除去作用が中断される。 Solidified coil insulator moisture, valve device 11-1,
11-2 is closed, the temperature of the refrigerator 12-1 is raised to thaw, and the water is discharged and removed from the drain valve 11-3.
In this embodiment, the action of removing moisture from the coil insulation is interrupted during the thawing process.
第３図は、この発明のさらに他の実施例であつ
て、冷凍機１２−１，１２−２の２台を並設し、
弁装置１１−１，１１−２、と１１−４，１１−
５とを交互に開閉させて、第３の外部配管６−４
に並設した２台の冷凍機の一方が連通して凝固動
作を行つている間に、遮断されている他方の冷凍
機は解凍動作を行わせるようにして、コイル絶縁
物水分の除去を連続的に行わせるようにしたもの
である。 FIG. 3 shows still another embodiment of the present invention, in which two refrigerators 12-1 and 12-2 are installed in parallel,
Valve devices 11-1, 11-2, and 11-4, 11-
5 and 5 alternately to open and close the third external piping 6-4.
While one of the two refrigerators installed in parallel communicates and performs the coagulation operation, the other refrigerator, which is shut off, performs the thawing operation to continuously remove moisture from the coil insulation. It was designed to be carried out in a specific manner.
乾燥筒１０と冷凍機１２−１とを並設して、弁
装置１１−１，１１−２と１１−４，１１−５と
を交互に開閉し、乾燥筒１０による水分の吸着中
に冷凍機１２−１の解凍を行い、冷凍機の凝固動
作中に、乾燥筒１０の吸着剤の取替えを行うよう
にすれば連続的にコイル絶縁物水分の除去ができ
ることはいうまでもない。 The drying cylinder 10 and the refrigerator 12-1 are arranged side by side, and the valve devices 11-1, 11-2 and 11-4, 11-5 are opened and closed alternately, and the freezing is performed while the drying cylinder 10 is adsorbing moisture. It goes without saying that the moisture in the coil insulation can be continuously removed by thawing the refrigerator 12-1 and replacing the adsorbent in the drying cylinder 10 during the freezing operation of the refrigerator.
上記弁装置の切換は手動でもよいが、タイマや
水分量センサを設けて、これらの出力信号により
自動切換えすることにより自動的にコイル絶縁物
水分を除去することができる。 The switching of the valve device may be done manually, but by providing a timer or a moisture sensor and automatically switching based on the output signals of these devices, it is possible to automatically remove moisture from the coil insulator.
なお、絶縁冷媒中の水分量は冷凍機の冷却温度
が低くければ低いほどその蒸気圧の分圧は低くな
るのでコイル絶縁物水分の除去効率が高くなるこ
とはいうまでもない。 It goes without saying that the lower the cooling temperature of the refrigerator, the lower the partial pressure of the vapor pressure in the insulating refrigerant, and therefore the higher the efficiency of removing moisture from the coil insulator.
上記は蒸発冷却式ガス絶縁変圧器について説明
したが、同様の絶縁構成のリアクトル等の蒸発冷
却式ガス絶縁電気機器に適用しても同様の効果が
得られる。 Although the above description has been made regarding an evaporatively cooled gas insulated transformer, similar effects can be obtained when applied to an evaporatively cooled gas insulated electric device such as a reactor having a similar insulation configuration.
以上のようにこの発明によれば、絶縁冷媒循環
路の第２の外部配管と並列に気体循環路を設け、
第２の気体ポンプにより、未液化ガスを液化した
絶縁冷媒とは分離して、気体循環路に循環させ
て、乾燥筒もしくは冷凍機により未液化ガス中に
含まれる水分を吸着または凝固させて排出するよ
うにしたことにより、コイル絶縁物より放出され
る水分は効率よく除去され、絶縁耐力の低下を防
ぐ効果を有するものである。 As described above, according to the present invention, the gas circulation path is provided in parallel with the second external piping of the insulated refrigerant circulation path,
A second gas pump separates the unliquefied gas from the liquefied insulating refrigerant and circulates it through the gas circulation path, and a drying tube or refrigerator adsorbs or solidifies the moisture contained in the unliquefied gas before discharging it. By doing so, water released from the coil insulator can be efficiently removed, which has the effect of preventing a decrease in dielectric strength.
また、気体循環路に設ける冷凍機を２台並列に
設け、２台の冷凍機が弁装置によつて交互に凝固
動作と解凍、排出する動作を繰返すようにするこ
とにより、コイル絶縁物水分を連続して除去する
ことができるものである。 In addition, by installing two refrigerators in parallel in the gas circulation path, and having the two refrigerators alternately repeat solidifying, thawing, and draining operations using a valve device, moisture in the coil insulation can be removed. It can be removed continuously.
第１図はこの発明によるガス絶縁電気機器の一
実施例を示す構成図、第２図及び第３図はこの発
明の他の実施例を示す構成図である。
４……絶縁冷媒、６−２，６−３……第１及び
第２の外部配管、６−６……第３の外部配管、８
……冷却器、９……第２の気体ポンプ、１０……
乾燥筒、１１−１，１１−２，１１−４，１１−
５……弁装置、１１−３……ドレン弁、１２−
１，１２−２……冷凍機、なお図中、同一符号は
同一または相当部分を示す。
FIG. 1 is a block diagram showing one embodiment of a gas insulated electric device according to the present invention, and FIGS. 2 and 3 are block diagrams showing other embodiments of the present invention. 4... Insulated refrigerant, 6-2, 6-3... First and second external piping, 6-6... Third external piping, 8
...Cooler, 9...Second gas pump, 10...
Drying cylinder, 11-1, 11-2, 11-4, 11-
5... Valve device, 11-3... Drain valve, 12-
1, 12-2...Refrigerating machine. In the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
の外部配管と、冷却器と、タンク下部に連通され
る第２の外部配管とで形成される絶縁冷媒循環路
を備えたガス絶縁電気機器において、上記第２の
外部配管と並列に、未液化ガスを分離する第２の
気体ポンプと乾燥筒もしくは冷凍機を有する気体
循環路を設けたことを特徴とするガス絶縁電気機
器。 ２ 冷凍機は２台並設され、交互に連通・遮断さ
れることを特徴とする特許請求の範囲第１項記載
のガス絶縁電気機器。[Scope of Claims] 1. A first gas pump that includes a gas pump and communicates with a tank.
In a gas-insulated electric device equipped with an insulated refrigerant circulation path formed by an external piping, a cooler, and a second external piping connected to the lower part of the tank, an unliquefied refrigerant is placed in parallel with the second external piping. A gas insulated electric device characterized by being provided with a gas circulation path having a second gas pump for separating gas and a drying cylinder or a refrigerator. 2. The gas-insulated electrical equipment according to claim 1, characterized in that two refrigerators are installed in parallel and communicated and disconnected alternately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23258382A JPS59121808A (en) | 1982-12-27 | 1982-12-27 | Gas-insulated electric apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23258382A JPS59121808A (en) | 1982-12-27 | 1982-12-27 | Gas-insulated electric apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59121808A JPS59121808A (en) | 1984-07-14 |
| JPH0472365B2 true JPH0472365B2 (en) | 1992-11-18 |
Family
ID=16941624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23258382A Granted JPS59121808A (en) | 1982-12-27 | 1982-12-27 | Gas-insulated electric apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59121808A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102446618B (en) * | 2011-12-05 | 2014-10-22 | 国家电网公司 | FC cooling medium drying device for evaporating cooling power transformer |
| JP7337643B2 (en) * | 2019-10-15 | 2023-09-04 | 東芝インフラシステムズ株式会社 | Molded stationary induction device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4915692U (en) * | 1972-05-13 | 1974-02-08 | ||
| JPS5553110A (en) * | 1978-10-11 | 1980-04-18 | Mitsubishi Electric Corp | Absorbing device |
| JPS5643126B2 (en) * | 1976-04-02 | 1981-10-09 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5643126U (en) * | 1979-09-12 | 1981-04-20 |
-
1982
- 1982-12-27 JP JP23258382A patent/JPS59121808A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4915692U (en) * | 1972-05-13 | 1974-02-08 | ||
| JPS5643126B2 (en) * | 1976-04-02 | 1981-10-09 | ||
| JPS5553110A (en) * | 1978-10-11 | 1980-04-18 | Mitsubishi Electric Corp | Absorbing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59121808A (en) | 1984-07-14 |
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