JP2017183394A - Oil-immersed electrical equipment - Google Patents

Oil-immersed electrical equipment Download PDF

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JP2017183394A
JP2017183394A JP2016065716A JP2016065716A JP2017183394A JP 2017183394 A JP2017183394 A JP 2017183394A JP 2016065716 A JP2016065716 A JP 2016065716A JP 2016065716 A JP2016065716 A JP 2016065716A JP 2017183394 A JP2017183394 A JP 2017183394A
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oil
gas
electrical device
elastic bag
bag body
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JP6623893B2 (en
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正貴 中島
Masaki Nakajima
正貴 中島
孝雄 大野
Takao Ono
孝雄 大野
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Abstract

PROBLEM TO BE SOLVED: To solve the problem that although electric equipment is stored in a tank filled with insulation oil and provided with a conservator so as to reduce variation in internal pressure of the tank due to expansion and contraction of the insulation oil, oxygen included in a gas filling an elastic bag body put in the conservator permeates the elastic bag body to cause the insulation oil to deteriorate.SOLUTION: In an elastic bag body 124 put in a conservator 120, a seal gas 128 is hermetically charged which has oxygen partial pressure lower than oxygen partial pressure of outside air 150 in the periphery of the conservator 120.SELECTED DRAWING: Figure 1

Description

この発明は、絶縁油の体積変化によるタンクの内圧の変化を緩和するコンサベータを備えた油入電気機器に関する。   The present invention relates to an oil-filled electrical device provided with a conservator that relaxes a change in internal pressure of a tank due to a change in volume of insulating oil.

変圧器等の電気機器は、その冷却と絶縁を目的として、絶縁油と呼ばれる油で満たされたタンクに収納されている。この絶縁油は、温度等の要因により膨張または収縮するため、タンクの内圧が変化する。そこで、タンクの内圧の変化を緩和するために、当該タンクにはコンサベータと呼ばれる装置が接続されている。コンサベータには、電気機器を収納したタンクから絶縁油が流入し、タンクと同様に、コンサベータも絶縁油で満たされている。ここで、コンサベータは、ゴム等から成る袋（以下、弾性袋体と称す）を有している。この弾性袋体の内部には、一般的には、コンサベータの周囲の気体、つまり、空気が充填されている。そして、絶縁油が膨張すると、コンサベータに収められた弾性袋体が収縮し、タンクの内圧の上昇を緩和している（例えば、特許文献１参照）。   Electrical devices such as transformers are housed in tanks filled with oil called insulating oil for the purpose of cooling and insulation. Since this insulating oil expands or contracts due to factors such as temperature, the internal pressure of the tank changes. In order to alleviate the change in the internal pressure of the tank, a device called a conservator is connected to the tank. Insulating oil flows into the conservator from a tank containing electrical equipment, and the conservator is filled with insulating oil as well as the tank. Here, the conservator has a bag made of rubber or the like (hereinafter referred to as an elastic bag). In general, the elastic bag body is filled with gas around the conservator, that is, air. And if insulating oil expand | swells, the elastic bag body accommodated in the conservator will shrink | contract, and the raise of the internal pressure of a tank will be relieve | moderated (for example, refer patent document 1).

実開平３−１６３１０号公報Japanese Utility Model Publication No. 3-16310

弾性袋体に充填された気体に含まれる酸素が、当該弾性袋体を透過し、絶縁油を劣化させるという課題があった。   There existed a subject that oxygen contained in the gas with which the elastic bag body was filled permeate | transmits the said elastic bag body, and deteriorated insulating oil.

この発明は、上記のような課題を解決するためになされたもので、弾性袋体を透過する酸素量を低減し、絶縁油の劣化を抑制する油入電気機器を得るものである。   The present invention has been made to solve the above-described problems, and provides an oil-filled electrical device that reduces the amount of oxygen that passes through an elastic bag and suppresses deterioration of insulating oil.

この発明に係る油入電気機器においては、電気機器が収納され、絶縁油が充填されたタンクと、タンクに連結されたコンサベータと、を備え、コンサベータは、その内部に弾性を有する袋状の弾性袋体を有し、弾性袋体の内部には、コンサベータの周囲の気体である第１の気体における酸素分圧である第１の酸素分圧よりも低い、第２の酸素分圧を有する第２の気体が密封されているものである。   The oil-filled electrical device according to the present invention includes a tank in which the electrical device is stored and filled with insulating oil, and a conservator connected to the tank, and the conservator has a bag shape having elasticity therein. The second oxygen partial pressure is lower than the first oxygen partial pressure that is the oxygen partial pressure in the first gas that is the gas around the conservator. The second gas having the following is sealed.

上記のように構成された油入電気機器は、弾性袋体を透過する酸素量を低減し、絶縁油の劣化を抑制することができる。   The oil-filled electrical device configured as described above can reduce the amount of oxygen that passes through the elastic bag body and suppress deterioration of the insulating oil.

実施の形態１および実施の形態２を示す油入電気機器の構成図である。It is a block diagram of the oil-filled electrical apparatus which shows Embodiment 1 and Embodiment 2. FIG. 実施の形態３を示す油入電気機器の構成図である。FIG. 6 is a configuration diagram of an oil-filled electrical apparatus showing a third embodiment. 実施の形態３の第１変形例を示す油入電気機器の構成図である。FIG. 10 is a configuration diagram of an oil-filled electrical device showing a first modification of the third embodiment. 実施の形態３の第２変形例を示す油入電気機器の立体的な構成図である。It is a three-dimensional block diagram of the oil-filled electrical apparatus which shows the 2nd modification of Embodiment 3.

（実施の形態１）
以下では、一実施形態である油入電気機器１００Ａについて、図１を用いて説明する。 (Embodiment 1)
Below, the oil-filled electrical apparatus 100A which is one Embodiment is demonstrated using FIG.

（油入電気機器１００Ａの構成）
油入電気機器１００Ａは、タンク１１０とコンサベータ１２０とを備える。 (Configuration of oil-filled electrical device 100A)
The oil-filled electrical device 100A includes a tank 110 and a conservator 120.

タンク１１０は、鉄板等から成る直方体状の容器である。その内部には、変圧器等の電気機器１１２が収納されている。また、タンク１１０の残余の空間は、絶縁油１１４で満たされている。さらに、タンク１１０の上部は、円筒状の接続管１４０の一端と接続されている。   The tank 110 is a rectangular parallelepiped container made of an iron plate or the like. Inside, an electrical device 112 such as a transformer is accommodated. The remaining space of the tank 110 is filled with insulating oil 114. Furthermore, the upper part of the tank 110 is connected to one end of a cylindrical connecting pipe 140.

絶縁油１１４は、電気機器１１２の冷却と絶縁を目的として、タンク１１０に充填されている。なお、絶縁油１１４は、鉱物油等を材料としている。   The insulating oil 114 is filled in the tank 110 for the purpose of cooling and insulating the electric equipment 112. The insulating oil 114 is made of mineral oil or the like.

コンサベータ１２０は、タンク１１０の上部に位置する。また、コンサベータ１２０は、筐体１２２及び弾性袋体１２４を有する。   The conservator 120 is located in the upper part of the tank 110. Further, the conservator 120 includes a housing 122 and an elastic bag body 124.

筐体１２２は、鉄板等を円筒状または直方体状等に加工したものである。したがって、筐体１２２の内部は、空洞である。また、筐体１２２の下部は、接続管１４０の他端と接続されている。したがって、筐体１２２には、接続管１４０を介して、タンク１１０から絶縁油１１４が流入している。そして、筐体１２２の内部は、通常、タンク１１０から流入した絶縁油１１４によって満たされている。   The casing 122 is obtained by processing an iron plate or the like into a cylindrical shape or a rectangular parallelepiped shape. Therefore, the inside of the housing 122 is hollow. Further, the lower portion of the housing 122 is connected to the other end of the connection pipe 140. Therefore, the insulating oil 114 flows from the tank 110 into the housing 122 via the connection pipe 140. And the inside of the housing | casing 122 is normally satisfy | filled with the insulating oil 114 which flowed in from the tank 110. FIG.

弾性袋体１２４は、筐体１２２内部の空洞の上部に固定されている。弾性袋体１２４は、ニトリル系ゴム等の耐油性ゴムを袋状に加工したものである。弾性袋体１２４の開口部は筐体１２２の上部に設けられた封入弁１２６で密閉されている。つまり、弾性袋体１２４に外気１５０が流入することはない。さらに、弾性袋体１２４には、封入ガス１２８が収められている。   The elastic bag body 124 is fixed to the upper part of the cavity inside the housing 122. The elastic bag body 124 is obtained by processing oil-resistant rubber such as nitrile rubber into a bag shape. The opening of the elastic bag body 124 is sealed with a sealing valve 126 provided at the top of the housing 122. That is, the outside air 150 does not flow into the elastic bag body 124. Further, an enclosed gas 128 is stored in the elastic bag body 124.

封入ガス１２８は、弾性袋体１２４に収められた空気である。したがって、封入ガス１２８の組成は、コンサベータ１２０の周囲の気体である外気１５０の組成と等しい。ただし、封入ガス１２８の全圧は、大気圧である外気１５０の全圧よりも低い。これにより、封入ガス１２８の酸素分圧は、外気１５０の酸素分圧よりも低くなる。なお、封入ガス１２８を弾性袋体１２４に密封する方法として、例えば、弾性袋体１２４内に空気を充填した後、真空ポンプ等を用いて弾性袋体１２４内の空気の一部を取り除く方法が考えられる。なお、封入ガス１２８の圧力は、弾性袋体１２４に封入ガス１２８を密封したときの圧力を意味している。   The sealed gas 128 is air contained in the elastic bag body 124. Therefore, the composition of the enclosed gas 128 is equal to the composition of the outside air 150 that is the gas around the conservator 120. However, the total pressure of the sealed gas 128 is lower than the total pressure of the outside air 150 that is atmospheric pressure. As a result, the oxygen partial pressure of the sealed gas 128 is lower than the oxygen partial pressure of the outside air 150. As a method for sealing the sealed gas 128 in the elastic bag body 124, for example, after the air is filled in the elastic bag body 124, a part of the air in the elastic bag body 124 is removed using a vacuum pump or the like. Conceivable. Note that the pressure of the sealed gas 128 means a pressure when the sealed gas 128 is sealed in the elastic bag body 124.

（コンサベータ１２０の機能）
このように構成された油入電気機器１００Ａでは、電気機器１１２の出力変化や外気１５０の温度変化により、絶縁油１１４が膨張する。その結果、タンク１１０の内圧及び筐体１２２の内圧が上昇する。このとき、筐体１２２内の弾性袋体１２４は収縮し、タンク１１０の内圧の上昇が緩和される。また、絶縁油１１４と外気１５０との直接接触を避け、絶縁油１１４の劣化防止を図っている。 (Function of conservator 120)
In the oil-filled electrical device 100A configured as described above, the insulating oil 114 expands due to a change in the output of the electrical device 112 or a change in the temperature of the outside air 150. As a result, the internal pressure of the tank 110 and the internal pressure of the housing 122 increase. At this time, the elastic bag body 124 in the housing 122 contracts, and the increase in the internal pressure of the tank 110 is alleviated. In addition, direct contact between the insulating oil 114 and the outside air 150 is avoided to prevent deterioration of the insulating oil 114.

（効果）
本実施例の油入電気機器１００Ａでは、従来の油入電気機器と比較して、絶縁油１１４の劣化を抑制することができる。従来の油入電気機器では、その弾性袋体に収められた気体の酸素分圧が、外気の酸素分圧と等しい。一方、本実施例である油入電気機器１００Ａでは、弾性袋体１２４に収められた封入ガス１２８の酸素分圧が、外気１５０の酸素分圧よりも低い。酸素の透過量は弾性袋体１２４内の酸素分圧に比例するため、油入電気機器１００Ａの弾性袋体１２４を透過する酸素は、従来の油入電気機器の弾性袋体を透過する酸素よりも少ない。よって、油入電気機器１００Ａは、従来の油入電気機器と比較して、絶縁油１１４の劣化を抑制することができる。 (effect)
In the oil-filled electrical device 100A of the present embodiment, the deterioration of the insulating oil 114 can be suppressed as compared with the conventional oil-filled electrical device. In the conventional oil-filled electrical device, the oxygen partial pressure of the gas contained in the elastic bag body is equal to the oxygen partial pressure of the outside air. On the other hand, in the oil-filled electrical apparatus 100A according to the present embodiment, the oxygen partial pressure of the sealed gas 128 stored in the elastic bag body 124 is lower than the oxygen partial pressure of the outside air 150. Since the permeation amount of oxygen is proportional to the oxygen partial pressure in the elastic bag body 124, the oxygen that permeates the elastic bag body 124 of the oil-filled electrical device 100 </ b> A is greater than the oxygen that permeates the elastic bag body of the conventional oil-filled electrical device. There are few. Therefore, the oil-filled electrical device 100A can suppress the deterioration of the insulating oil 114 as compared with the conventional oil-filled electrical device.

また、油入電気機器１００Ａでは、従来の油入電気機器と比較して、絶縁油１１４の劣化をさらに抑制することができる。具体的には、従来の油入電気機器では、弾性袋体が密閉されておらず、外気が流入可能な構造である。したがって、従来の油入電気機器では、弾性袋体内の酸素が絶縁油へ透過した後、新たな酸素が弾性袋体に補充される。一方、油入電気機器１００Ａにおける弾性袋体１２４は密閉されているので、弾性袋体１２４内に存在する酸素量は有限である。したがって、油入電気機器１００Ａでは、弾性袋体１２４内の酸素が絶縁油１１４へ透過した後に、弾性袋体１２４に新たな酸素が外気から補充されない。結果として、酸素分圧は低下していき、油入電気機器１００Ａの弾性袋体１２４を透過する酸素は、従来の油入電気機器の弾性袋体を透過する酸素よりも少なくなる。よって、油入電気機器１００Ａでは、従来の油入電気機器と比較して、絶縁油１１４の劣化をさらに抑制することができる。 Further, in the oil-filled electrical device 100A, it is possible to further suppress the deterioration of the insulating oil 114 as compared with the conventional oil-filled electrical device. Specifically, in the conventional oil-filled electrical device, the elastic bag is not sealed, and has a structure in which outside air can flow. Therefore, in the conventional oil-filled electrical apparatus, after oxygen in the elastic bag body permeates the insulating oil, new oxygen is replenished to the elastic bag body. On the other hand, since the elastic bag body 124 in the oil-filled electrical apparatus 100A is sealed, the amount of oxygen present in the elastic bag body 124 is finite. Therefore, in the oil-filled electrical device 100A, after the oxygen in the elastic bag body 124 permeates the insulating oil 114, new oxygen is not replenished from the outside air into the elastic bag body 124. As a result, the oxygen partial pressure is reduced, and oxygen passing through the elastic bag body 124 of the oil-filled electrical device 100A is less than oxygen passing through the elastic bag body of the conventional oil-filled electrical device. Therefore, in oil-filled electrical device 100A, deterioration of insulating oil 114 can be further suppressed as compared with conventional oil-filled electrical devices.

ところで、従来の油入電気機器には、弾性袋体内に窒素を密封した窒素密封型と呼ばれるコンサベータを備えたがものある。窒素密封型のコンサベータを備えた油入電気機器は、弾性袋体内に窒素を密封する前に、真空ポンプ等を用いて弾性袋体内の空気を全て取り除く必要がある。そのため、弾性袋体には大きな機械的ストレスがかかり、弾性袋体の破損や品質が低下する問題がある。一方、本実施例の油入電気機器１００Ａでは、弾性袋体１２４内の空気の一部を取り除けばよい。つまり、弾性袋体１２４内の気体を全て取り除く必要がない。したがって、弾性袋体１２４の破損や品質低下を抑制する効果も奏する。   By the way, some conventional oil-filled electrical devices include a conservator called a nitrogen-sealed type in which nitrogen is sealed in an elastic bag. An oil-filled electrical device equipped with a nitrogen-sealed conservator needs to remove all the air in the elastic bag using a vacuum pump or the like before sealing nitrogen in the elastic bag. Therefore, a large mechanical stress is applied to the elastic bag body, and there is a problem that the elastic bag body is damaged and the quality is lowered. On the other hand, in the oil-filled electrical device 100A of the present embodiment, a part of the air in the elastic bag body 124 may be removed. That is, it is not necessary to remove all the gas in the elastic bag body 124. Therefore, the effect which suppresses the failure | damage of the elastic bag body 124 and a quality fall is also show | played.

（実施の形態２）
実施の形態２の油入電気機器１００Ｂの構成について、図１を用いて説明する。本実施例の油入電気機器１００Ｂでは、実施の形態１と同様に、封入ガス１２８の酸素分圧は、外気１５０の酸素分圧よりも低い。ただし、油入電気機器１００Ｂにおける封入ガス１２８の全圧は、外気１５０の全圧と等しい。この点で、実施の形態２の油入電気機器１００Ｂと実施の形態１の油入電気器１００Ａとは異なる。 (Embodiment 2)
The configuration of oil-filled electrical apparatus 100B according to Embodiment 2 will be described with reference to FIG. In the oil-filled electrical device 100B of the present example, the oxygen partial pressure of the sealed gas 128 is lower than the oxygen partial pressure of the outside air 150, as in the first embodiment. However, the total pressure of the sealed gas 128 in the oil-filled electrical device 100B is equal to the total pressure of the outside air 150. In this respect, the oil-filled electrical device 100B of the second embodiment is different from the oil-filled electrical device 100A of the first embodiment.

このように封入ガス１２８の全圧と外気１５０の全圧とを等しくすることで、外気１５０が、弾性袋体１２４の内部へ流入することを抑制することができる。なお、封入ガス１２８の全圧と外気１５０の全圧を等しくする方法として、例えば、以下のような方法が考えられる。まず、弾性袋体１２４内に空気を充填し、真空ポンプ等を用いて弾性袋体１２４内に充填された空気の一部を取り除く。その後、取り除いた空気と同量の酸素以外の気体、例えば窒素等を、弾性袋体１２４の内部に加える方法が考えられる。   Thus, by making the total pressure of the sealed gas 128 equal to the total pressure of the outside air 150, it is possible to suppress the outside air 150 from flowing into the elastic bag body 124. As a method for making the total pressure of the sealed gas 128 equal to the total pressure of the outside air 150, for example, the following method can be considered. First, the elastic bag body 124 is filled with air, and a part of the air filled in the elastic bag body 124 is removed using a vacuum pump or the like. Thereafter, a method is conceivable in which a gas other than oxygen, such as nitrogen, is added to the inside of the elastic bag 124 in the same amount as the removed air.

本実施例の油入電気機器１００Ｂにおける他の構成は、実施の形態１の油入電気機器１００Ａと同様である。したがって、油入電気機器１００Ｂにおいて、封入ガス１２８以外の説明は実施の形態１の油入電気機器１００Ａで説明のとおりである。   Other configurations of the oil-filled electrical device 100B of the present example are the same as those of the oil-filled electrical device 100A of the first embodiment. Therefore, in the oil-filled electrical device 100B, descriptions other than the sealed gas 128 are as described in the oil-filled electrical device 100A of the first embodiment.

（実施の形態３）
実施の形態３の油入電気機器１００Ｃの構成について、図２を用いて説明する。本実施例の油入電気機器１００Ｃは、実施の形態１である油入電気機器１００Ａに対して、ガス貯留槽１６０を加えたものである。 (Embodiment 3)
The configuration of oil-filled electrical apparatus 100C according to Embodiment 3 will be described with reference to FIG. The oil-filled electrical device 100C of this example is obtained by adding a gas storage tank 160 to the oil-filled electrical device 100A according to the first embodiment.

ガス貯留槽１６０は、鉄板等を円筒状または直方体状等に加工した容器であり、タンク１１０の近傍に設けられている。ガス貯留槽１６０は、弾性袋体１２４と鉄管であるガス配管１７０により接続されている。これにより、封入ガス１２８は、弾性袋体１２４からガス貯留槽１６０へ移動することが可能になる。したがって、油入電気機器１００Ｃの弾性袋体１２４の開口部はガス配管１７０と接続されており、この点で、油入電気器１００Ａと異なる。ただし、弾性袋体１２４及びガス貯留槽１６０は、ガス配管１７０と接続された部分を除いて、密閉されている。   The gas storage tank 160 is a container obtained by processing an iron plate or the like into a cylindrical shape or a rectangular parallelepiped shape, and is provided in the vicinity of the tank 110. The gas storage tank 160 is connected to the elastic bag body 124 by a gas pipe 170 that is an iron pipe. Thereby, the sealed gas 128 can move from the elastic bag body 124 to the gas storage tank 160. Accordingly, the opening of the elastic bag body 124 of the oil-filled electrical device 100C is connected to the gas pipe 170, and this is different from the oil-filled electrical device 100A. However, the elastic bag body 124 and the gas storage tank 160 are sealed except for a portion connected to the gas pipe 170.

このようにガス貯留槽１６０をさらに設けたことで、封入ガス１２８の圧力上昇を抑制することができる。実施の形態１の油入電気機器１００Ａおよび実施の形態２の油入電気機器１００Ｂでは、封入ガス１２８が弾性袋体１２４内にのみ収められている。一方、本実施例の油入電気機器１００Ｃでは、封入ガス１２８が弾性袋体１２４、ガス配管１７０およびガス貯留槽１６０からなる空間内に収められている。したがって、封入ガス１２８を収める容積は、実施の形態１の油入電気機器１００Ａや実施の形態２の油入電気機器１００Ｂよりも大きい。よって、封入ガス１２８の圧力上昇を抑制することができる。   By further providing the gas storage tank 160 in this way, the pressure increase of the sealed gas 128 can be suppressed. In the oil-filled electrical device 100A according to the first embodiment and the oil-filled electrical device 100B according to the second embodiment, the sealed gas 128 is stored only in the elastic bag body 124. On the other hand, in the oil-filled electrical device 100 </ b> C of this embodiment, the sealed gas 128 is stored in a space including the elastic bag body 124, the gas pipe 170, and the gas storage tank 160. Therefore, the volume in which the sealed gas 128 is accommodated is larger than the oil-filled electrical device 100A of the first embodiment and the oil-filled electrical device 100B of the second embodiment. Therefore, an increase in pressure of the sealed gas 128 can be suppressed.

本実施例の油入電気機器１００Ｃにおける他の構成は、実施の形態１の油入電気機器１００Ａと同様である。したがって、油入電気機器１００Ｃにおいて、ガス貯留槽１６０を設けたことに関する事項以外の説明は実施の形態１の油入電気機器１００Ａで説明のとおりである。   Other configurations of the oil-filled electrical device 100C of the present example are the same as those of the oil-filled electrical device 100A of the first embodiment. Therefore, in the oil-filled electrical device 100C, the description other than the matter relating to the provision of the gas storage tank 160 is as described in the oil-filled electrical device 100A of the first embodiment.

（第１変形例）
本実施例の第１変形例の油入電気機器１００Ｄでは、図３に示すように、ガス貯留槽１６０がコンサベータ１２０に隣接して設けられている。これにより、油入電気機器１００Ｃと比べて、弾性袋体１２４とガス貯留槽１６０との距離が短くなり、ガス配管１７０が短くなる。 (First modification)
In the oil-filled electrical apparatus 100D according to the first modified example of the present embodiment, a gas storage tank 160 is provided adjacent to the conservator 120 as shown in FIG. Thereby, compared with the oil-filled electrical device 100C, the distance between the elastic bag body 124 and the gas storage tank 160 is shortened, and the gas pipe 170 is shortened.

このようにガス貯留槽１６０をコンサベータ１２０に隣接して設けることで、外気１５０が弾性袋体１２４の内部へ流入することを抑制することができる。一般的に、ガス配管が長くなるほど、複数の配管を溶接する必要があるため、溶接による接合部の数が多くなる。油入電気機器１００Ｄでは、ガス配管１７０の長さが油入電気機器１００Ｃのガス配管１７０よりも短い。したがって、油入電気機器１００Ｄのガス配管１７０の接合部の数を、油入電気機器１００Ｃのガス配管１７０の接合部の数よりも少なくすることができる。そのため、外気１５０が、ガス配管１７０の接合部から弾性袋体１２４の内部へ流入することを抑制することができる。   Thus, by providing the gas storage tank 160 adjacent to the conservator 120, it is possible to suppress the outside air 150 from flowing into the elastic bag body 124. In general, the longer the gas pipe is, the more pipes need to be welded, so the number of welded joints increases. In the oil-filled electrical device 100D, the length of the gas pipe 170 is shorter than the gas pipe 170 of the oil-filled electrical device 100C. Therefore, the number of joints of the gas piping 170 of the oil-filled electrical device 100D can be made smaller than the number of joints of the gas piping 170 of the oil-filled electrical device 100C. Therefore, it is possible to suppress the outside air 150 from flowing into the elastic bag body 124 from the joint portion of the gas pipe 170.

本実施例の油入電気機器１００Ｄにおける他の構成は、実施の形態１の油入電気機器１００Ａと同様である。したがって、油入電気機器１００Ｄにおいて、ガス貯留槽１６０をコンサベータ１２０に隣接して設けたことに関する事項以外の説明は実施の形態１の油入電気機器１００Ａで説明のとおりである。   Other configurations of the oil-filled electrical device 100D of the present example are the same as those of the oil-filled electrical device 100A of the first embodiment. Therefore, in the oil-filled electrical device 100D, the description other than the matter relating to the provision of the gas storage tank 160 adjacent to the conservator 120 is as described in the oil-filled electrical device 100A of the first embodiment.

（第２変形例）
本実施例の第２変形例の油入電気機器１００Ｅの構成について、図４を用いて説明する。本実施例の第２変形例の油入電気機器１００Ｅは、本実施例の油入電気機器１００Ｃのガス貯留槽１６０の代わりに、タンク１１０内に設けられた第１補強部１１６内の空間１１７を利用するものである。なお、本変形例に係る図４は、説明のために立体的な記載とした。 (Second modification)
The structure of the oil-filled electrical apparatus 100E according to the second modification of the present embodiment will be described with reference to FIG. The oil-filled electrical device 100E of the second modification of the present embodiment is a space 117 in the first reinforcing portion 116 provided in the tank 110, instead of the gas storage tank 160 of the oil-filled electrical device 100C of the present embodiment. Is to be used. In addition, FIG. 4 which concerns on this modification was made into the three-dimensional description for description.

第１補強部１１６および第２補強部１１８は、電気機器１１２の固定とタンク１１０の補強を目的にタンク１１０の側面に設けられている。第１補強部１１６および第２補強部１１８は、鉄板等を折り曲げて形成された断面がコの字型の柱状の部材であり、タンク１１０の正面手前側から奥側に向かって伸びている。また、第１補強部１１６および第２補強部１１８は、それらの部材が成すコの字の開口部がタンク１１０の外側を向いて、タンク１１０の側面に沿うように設けられている。これにより、第１補強部１１６とタンク１１０の側面とで中空の空間１１７が形成されているとともに、第２補強部１１８とタンク１１０の側面とでも中空の空間１１９が形成されている。ここで、空間１１７と弾性袋体１２４とは、ガス配管１７０により接続されている。したがって、封入ガス１２８は、弾性袋体１２４から第１補強部１１６内の空間１１７へ移動することが可能である。なお、電気機器１１２の上面は、第１補強部１１６の下面及び第２補強部１１８の下面と接している。   The first reinforcing portion 116 and the second reinforcing portion 118 are provided on the side surface of the tank 110 for the purpose of fixing the electric device 112 and reinforcing the tank 110. The first reinforcing part 116 and the second reinforcing part 118 are columnar members having a U-shaped cross section formed by bending an iron plate or the like, and extend from the front side of the tank 110 toward the back side. The first reinforcing portion 116 and the second reinforcing portion 118 are provided so that the U-shaped opening formed by these members faces the outside of the tank 110 and is along the side surface of the tank 110. Thereby, a hollow space 117 is formed between the first reinforcing portion 116 and the side surface of the tank 110, and a hollow space 119 is also formed between the second reinforcing portion 118 and the side surface of the tank 110. Here, the space 117 and the elastic bag body 124 are connected by a gas pipe 170. Therefore, the sealed gas 128 can move from the elastic bag body 124 to the space 117 in the first reinforcing portion 116. Note that the upper surface of the electric device 112 is in contact with the lower surface of the first reinforcing portion 116 and the lower surface of the second reinforcing portion 118.

このようにタンク１１０内に設けられた第１補強部１１６内の空間１１７を利用して封入ガス１２８を収めたことで、別途ガス貯留槽を設けることなく、封入ガス１２８の圧力上昇を抑制することができる。   In this way, by storing the sealed gas 128 using the space 117 in the first reinforcing portion 116 provided in the tank 110, an increase in the pressure of the sealed gas 128 is suppressed without providing a separate gas storage tank. be able to.

なお、第１補強部１１６内の空間１１７に封入ガス１２８を収める場合について説明したが、第２補強部１１８内の空間１１９に封入ガス１２８を収める場合でも同様の効果が得られる。   Although the case where the sealed gas 128 is stored in the space 117 in the first reinforcing portion 116 has been described, the same effect can be obtained when the sealed gas 128 is stored in the space 119 in the second reinforcing portion 118.

本実施例の油入電気機器１００Ｅにおける他の構成は、実施の形態１の油入電気機器１００Ａと同様である。したがって、油入電気機器１００Ｅにおいて、第１補強部１１６内の空間１１７に封入ガスを収めたことに関する事項以外の説明は実施の形態１の油入電気機器１００Ａで説明のとおりである。   Other configurations of the oil-filled electrical device 100E of the present example are the same as those of the oil-filled electrical device 100A of the first embodiment. Therefore, in the oil-filled electrical device 100E, the description other than the matter relating to the inclusion of the sealed gas in the space 117 in the first reinforcing portion 116 is as described in the oil-filled electrical device 100A of the first embodiment.

（その他の実施形態）
本発明に係る油入電気機器は、前記実施の形態に限らずその要旨の範囲内において変更可能である。例えば、上記した実施の形態に示した油入電気機器は、コンサベータ内部に弾性袋体を有するいわゆるエアーシールセル方式で説明したが、この方式に限られるものではなく、弾性体を平面的に形成した弾性膜によって絶縁油と気体を隔離するいわゆるダイヤフラム方式であってもよい。また、上記実施の形態の構成を他の実施の形態の構成と組み合わせてもよい。 (Other embodiments)
The oil-filled electrical device according to the present invention is not limited to the above embodiment, and can be changed within the scope of the gist thereof. For example, although the oil-filled electrical device shown in the above-described embodiment has been described with a so-called air seal cell system having an elastic bag inside the conservator, the present invention is not limited to this system, and the elastic body is planar. A so-called diaphragm system may be used in which insulating oil and gas are isolated by the formed elastic film. Further, the configuration of the above embodiment may be combined with the configuration of another embodiment.

１１０ タンク、１１２ 電気機器、１１４ 絶縁油、１２０ コンサベータ、
１２４ 弾性袋体、１２８ 封入ガス、１５０ 外気、１６０ ガス貯留槽。 110 tanks, 112 electrical equipment, 114 insulating oil, 120 conservators,
124 elastic bag, 128 filled gas, 150 outside air, 160 gas storage tank.

Claims (5)

電気機器が収納され、絶縁油が充填されたタンクと、
前記タンクに連結されたコンサベータと、
を備え、
前記コンサベータは、その内部に弾性を有する袋状の弾性袋体を有し、
前記弾性袋体の内部には、前記コンサベータの周囲の気体である第１の気体における酸素分圧である第１の酸素分圧よりも低い、第２の酸素分圧を有する第２の気体が密封されていること、
を特徴とする油入電気機器。 A tank containing electrical equipment and filled with insulating oil;
A conservator connected to the tank;
With
The conservator has a bag-like elastic bag body having elasticity inside,
A second gas having a second oxygen partial pressure that is lower than the first oxygen partial pressure that is the oxygen partial pressure in the first gas that is the gas surrounding the conservator is inside the elastic bag body. That is sealed,
Oil-filled electrical equipment characterized by. 前記第２の気体の圧力は、前記第１の気体の圧力と等しいこと、
を特徴とする請求項１に記載の油入電気機器。 The pressure of the second gas is equal to the pressure of the first gas;
The oil-filled electrical device according to claim 1. 前記第２の気体の圧力は、前記第１の気体の圧力よりも低いこと、
を特徴とする請求項１に記載の油入電気機器。 The pressure of the second gas is lower than the pressure of the first gas;
The oil-filled electrical device according to claim 1. 前記第２の気体は、空気であること、
を特徴とする請求項３に記載の油入電気機器。 The second gas is air;
The oil-filled electrical device according to claim 3. 前記弾性袋体の内部に連結され、前記第２の気体が移動可能な空間を形成する気体貯留部をさらに備えていること、
を特徴とする請求項１から４のいずれか１項に記載の油入電気機器。 A gas reservoir connected to the inside of the elastic bag body and forming a space in which the second gas can move;
The oil-filled electrical device according to any one of claims 1 to 4, wherein
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Citations (10)

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Publication number Priority date Publication date Assignee Title
GB920051A (en) * 1961-11-09 1963-03-06 Licentia Gmbh Improvements in and relating to electric apparatus
JPS5059728A (en) * 1973-09-26 1975-05-23
JPS5339295Y2 (en) * 1974-05-17 1978-09-22
JPS5640627U (en) * 1979-09-05 1981-04-15
JPS5730302A (en) * 1980-07-31 1982-02-18 Toshiba Corp Transportation of fully equipped transporting type oil- immersed transformer
JPH07320944A (en) * 1994-05-24 1995-12-08 Meidensha Corp Oil-filled electrical equipment
JP2006295017A (en) * 2005-04-14 2006-10-26 Chugoku Electric Power Co Inc:The Conservator
US20080196925A1 (en) * 2005-07-01 2008-08-21 Siemens Aktiengesellschaft Electrical Component
JP2010147074A (en) * 2008-12-16 2010-07-01 Mitsubishi Electric Corp Tap selecting apparatus and atmospheric pressure adjustment method
JP2015015286A (en) * 2013-07-03 2015-01-22 三菱電機株式会社 Stationary induction apparatus

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB920051A (en) * 1961-11-09 1963-03-06 Licentia Gmbh Improvements in and relating to electric apparatus
JPS5059728A (en) * 1973-09-26 1975-05-23
JPS5339295Y2 (en) * 1974-05-17 1978-09-22
JPS5640627U (en) * 1979-09-05 1981-04-15
JPS5730302A (en) * 1980-07-31 1982-02-18 Toshiba Corp Transportation of fully equipped transporting type oil- immersed transformer
JPH07320944A (en) * 1994-05-24 1995-12-08 Meidensha Corp Oil-filled electrical equipment
JP2006295017A (en) * 2005-04-14 2006-10-26 Chugoku Electric Power Co Inc:The Conservator
US20080196925A1 (en) * 2005-07-01 2008-08-21 Siemens Aktiengesellschaft Electrical Component
JP2010147074A (en) * 2008-12-16 2010-07-01 Mitsubishi Electric Corp Tap selecting apparatus and atmospheric pressure adjustment method
JP2015015286A (en) * 2013-07-03 2015-01-22 三菱電機株式会社 Stationary induction apparatus

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