WO2011024570A1 - Electric transformer - Google Patents
Electric transformer Download PDFInfo
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- WO2011024570A1 WO2011024570A1 PCT/JP2010/061780 JP2010061780W WO2011024570A1 WO 2011024570 A1 WO2011024570 A1 WO 2011024570A1 JP 2010061780 W JP2010061780 W JP 2010061780W WO 2011024570 A1 WO2011024570 A1 WO 2011024570A1
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- oil
- switching device
- expansion chamber
- vegetable oil
- transformer
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- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/321—Insulating of coils, windings, or parts thereof using a fluid for insulating purposes only
Definitions
- the present invention relates to a transformer having a tap switching device.
- the present invention provides a transformer capable of suppressing changes in the properties of vegetable oil and maintaining the performance of the tap switching device even when vegetable oil is used in the tap switching device. Objective.
- a transformer according to a first aspect of the present invention is a transformer having a tap switching device, comprising a container in which the tap switching device is accommodated, vegetable oil as an insulating liquid injected into the container, and the vegetable oil and air. And a shield covering the surface of the vegetable oil so as to block contact.
- the transformer of the first invention since the surface of the vegetable oil injected into the container in which the tap switching device is accommodated is covered with the shield, generation of sludge due to moisture in the air is suppressed. The Thereby, the change of the property of the vegetable oil itself that sludge produces
- the transformer of the first invention even when vegetable oil is used for the tap switching device, it is possible to suppress changes in the properties of the vegetable oil and maintain the performance of the tap switching device.
- a transformer according to a second aspect of the invention is the transformer according to the first aspect of the invention, comprising an oil expansion chamber connected to the container and storing the vegetable oil flowing in from the container, wherein the shield is stored in the oil expansion chamber. It is provided so that space parts other than the said vegetable oil may be plugged up, and the inside is a bag body connected to this oil expansion chamber exterior.
- the vegetable oil injected into the container in which the tap switching device is accommodated fills the container and flows into the oil expansion chamber.
- the surface of vegetable oil is covered with the bag provided so that the space part other than vegetable oil might be plugged up in an oil expansion chamber. Since the bag body communicates with the outside of the expansion chamber, the bag body can continue to cover the surface of the vegetable oil by contracting and expanding in response to the change in the space accompanying the expansion and contraction of the vegetable oil.
- moisture in the air is suppressed from being absorbed by the vegetable oil, so even when vegetable oil is used in the tap switching device, the change in the properties of the vegetable oil is suppressed and the performance of the tap switching device is maintained. Can do.
- the block diagram which shows the whole structure of a transformer The block diagram which shows the structure of an oil expansion chamber.
- the transformer 1 of this embodiment is demonstrated.
- the transformer 1 has a structure in which a transformer main body 3 is accommodated in a tank 2 and sealed with a rapeseed oil 4 as an insulating liquid injected and impregnated therein.
- the transformer body 3 is configured by winding primary and secondary coils 3b around an iron core 3a.
- the transformer 1 includes a tap switching device 5 housed in the tank 2, and the tap switching device 5 is connected to the primary and secondary coils 3b, respectively.
- the tap switching device 5 includes a switching device tank 5a (corresponding to the container of the present invention), a tap selector that selects an arbitrary tap, and a switching opening / closing that cuts off the load current when a load is applied and flows current to an adjacent tap.
- the switching device main body 5b provided with the container is accommodated.
- a rapeseed oil 5c similar to the rapeseed oil 4 injected into the tank 2 is injected into the switching device tank 5a, and the switching device body 5b is immersed in the rapeseed oil 5c.
- the switching device tank 5a is inserted into the tank 2 through the opening 2b provided in the upper partition 2a that seals the upper side of the tank 2 in a state where the switching device main body 5b is accommodated.
- a driving mechanism 6b connected to the driving shaft of the motor 6a for driving the switching switch is provided at the upper part of the switching device tank 5a. After the rotation of the motor 6a is decelerated by the driving mechanism 6b, The switching switch slides and the contact (electrode) is switched.
- a vacuum valve in which the contact portion is in a vacuum state is employed in order to prevent carbon oil contamination caused by an arc when switching the contact.
- the oil expansion chamber 10 includes a communication pipe 11 that allows the switching device tank 5a and the oil expansion chamber 10 to communicate with each other, and a rubber bag 12 provided in the oil expansion chamber 10 (corresponding to a bag body as a shield of the present invention).
- the communication pipe 11 is a conduit for allowing the rapeseed oil 5c to flow in and out between the switching device tank 5a and the oil expansion chamber 10, and the rapeseed oil 5c filled in the switching device tank 5a is communicated with the rapeseed oil 5c when oil is injected.
- a predetermined amount flows into the oil expansion chamber 10 through the pipe 11.
- the rapeseed oil 5c flows in and out between the switching device tank 5a and the oil expansion chamber 10 due to the volume change of the rapeseed oil 5c accompanying the temperature rise of the transformer 1 and the tap switching device 5. .
- the oil expansion chamber 10 is a cylindrical housing, and is connected to the communication pipe 11 at the lower part and to the connection pipe 13 at the upper part.
- the rubber bag 12 connected to the connecting pipe 13 is provided on the upper side in the oil expansion chamber 10 so as to block the space other than the rapeseed oil 5c in the oil expansion chamber 10. Since the atmospheric pressure is applied to the inside of the rubber bag 12 via the connecting pipe 13 and the hygroscopic respirator 14, the rubber bag 12 contracts or expands according to the pressure difference between the internal pressure and the external pressure due to the rapeseed oil 5c.
- an air vent valve (not shown) is provided above the oil expansion chamber 10, and the rapeseed oil 5c that has flowed into the oil expansion chamber 10 from the switching device tank 5a is opened by opening the air vent valve when oil is injected. Fills all the spaces in the oil expansion chamber 10 except the rubber bag 12, and eventually the rapeseed oil 5c is discharged from the air vent valve. In this state, by closing the air vent valve, the rapeseed oil 5c in the oil expansion chamber 10 is maintained in a state where there is no surface portion in contact with air.
- the hygroscopic respirator 14 is a device for dehumidifying the outside air with a desiccant (silica gel) enclosed therein, and an oil pot (not shown) is provided below the hygroscopic respirator 14 so that the desiccant is not always exposed to the outside air. Etc. are provided.
- the oil level gauge 15 detects a change in the height of the rapeseed oil 5c in the oil expansion chamber 10 as a change in the angle of the arm 15b by an arm 15b having a contact 15a that contacts the lower end of the rubber bag 12 attached to the tip. To do.
- the transformer 1 having the above-described configuration, when the rapeseed oil 5c in the switching device tank 5a contracts, the outside air is absorbed by the hygroscopic respirator 14 to become dry air, and the dry air enters the rubber bag 12 through the connecting pipe 13.
- the rubber bag 12 is inflated by being taken in.
- the rapeseed oil 5c in the switching device tank 5a expands, the dry air in the rubber bag 12 is pushed out to the hygroscopic respirator 14 through the connecting pipe 13 and released to the outside air.
- the transformer 1 of this embodiment even when the rapeseed oil 5c as vegetable oil is used for the tap switching device 5, the change in the properties of the rapeseed oil 5c is suppressed, and the performance of the tap switching device 5 is maintained. Can be planned.
- the vegetable oil as the insulating liquid has been described as rapeseed oil, but is not limited thereto. Veronia oil or the like may be used.
- a shield is the rapeseed oil 5c inject
- FIG. 1 A shield is the rapeseed oil 5c inject
- SYMBOLS 1 ... Transformer, 2 ... Tank, 3 ... Transformer main body, 4, 5c ... Rapeseed oil (vegetable oil), 5 ... Tap switching device, 5a ... Switching device tank (container), 5b ... Switching device main body, 10 ... Oil expansion chamber , 12 ... rubber bags (bags, shields), 14 ... hygroscopic respirators.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
Provided is an electric transformer wherein if a vegetable oil is used for a tap switching device, the variation of the property of the vegetable oil can be suppressed, and the performance of the tap switching device can be maintained.
An electric transformer (1) is comprised of a switching device tank (5a) which contains a tap switching device (5), a rapeseed oil (5c) charged into the tank (5a), an oil expansion chamber (10) which stores the rapeseed oil (5c) supplied from the tank (5a), and a rubber bag (12) which is provided so as to fill the space in the oil expansion chamber (10) not filled with the rapeseed oil (5c), and the inside of the rubber bag (12) communicates with the outside of the oil expansion chamber (10).
Description
本発明は、タップ切換装置を有する変圧器に関する。
The present invention relates to a transformer having a tap switching device.
近年、電気機器の環境性能を向上させる観点から、絶縁液体として植物油を注入した変圧器が提案されてきている。例えば、下記特許文献１に示す変圧器では、変圧器本体の内部に酸化防止剤を添加した植物油を注入している。
In recent years, a transformer in which vegetable oil is injected as an insulating liquid has been proposed from the viewpoint of improving the environmental performance of electrical equipment. For example, in the transformer shown in Patent Document 1 below, vegetable oil to which an antioxidant is added is injected into the transformer body.
かかる変圧器では、空気中の酸素が溶け込んだ水分が植物油に吸収されたとしても、酸化防止剤により植物油の酸化が抑制されるため、酸化による植物油の劣化を抑え、ひいては植物油の交換寿命を延長し得る。
In such a transformer, even if the water in which oxygen in the air is dissolved is absorbed by the vegetable oil, the oxidation of the vegetable oil is suppressed by the antioxidant, so that the deterioration of the vegetable oil due to the oxidation is suppressed, thereby extending the replacement life of the vegetable oil. Can do.
しかしながら、機械的な摺動が繰り返されるタップ切換装置に植物油を注入した場合には、植物油に吸収された水分により生成されたスラッジ（沈殿物）が、タップ切換装置内部の電極や摺動機構の凹凸部分に付着する。そのために、付着したスラッジによる摺動抵抗の増大や摩擦粉の増加等のように、植物油自体の性状の変化に伴ってタップ切換装置自体の性能が損なわれ兼ねない。
However, when vegetable oil is injected into a tap switching device that repeats mechanical sliding, sludge (precipitate) generated by the moisture absorbed in the vegetable oil is caused by the electrode and sliding mechanism inside the tap switching device. Adhere to uneven parts. Therefore, the performance of the tap switching device itself may be impaired along with the change in the properties of the vegetable oil itself, such as an increase in sliding resistance due to attached sludge and an increase in friction powder.
一方で、変圧器の環境性能を向上させる観点からは、変圧器本体のみならず、タップ切換装置についても、鉱油に代わり、植物油が用いられることが望まれている。
On the other hand, from the viewpoint of improving the environmental performance of the transformer, it is desired that not only the transformer body but also the tap changer, vegetable oil is used instead of mineral oil.
以上の事情に鑑みて、本発明は、タップ切換装置に植物油を用いた場合にも、植物油の性状の変化を抑制し、タップ切換装置の性能維持を図ることができる変圧器を提供することを目的とする。
In view of the above circumstances, the present invention provides a transformer capable of suppressing changes in the properties of vegetable oil and maintaining the performance of the tap switching device even when vegetable oil is used in the tap switching device. Objective.
第１発明の変圧器は、タップ切換装置を有する変圧器であって、前記タップ切換装置が収容される容器と、前記容器内に注入された絶縁液体としての植物油と、前記植物油と空気との接触を遮断するように該植物油の表面を覆う遮蔽体とを備えることを特徴とする。
A transformer according to a first aspect of the present invention is a transformer having a tap switching device, comprising a container in which the tap switching device is accommodated, vegetable oil as an insulating liquid injected into the container, and the vegetable oil and air. And a shield covering the surface of the vegetable oil so as to block contact.
第１発明の変圧器によれば、タップ切換装置が収容される容器内に注入された植物油は、その表面が遮蔽体により覆われるため、空気中の水分によりスラッジが生成されることが抑制される。これにより、植物油に吸収された水分によりスラッジが生成するという植物油自体の性状の変化、およびそれに伴うタップ切換装置自体の機能が損なわれることがない。
According to the transformer of the first invention, since the surface of the vegetable oil injected into the container in which the tap switching device is accommodated is covered with the shield, generation of sludge due to moisture in the air is suppressed. The Thereby, the change of the property of the vegetable oil itself that sludge produces | generates with the water | moisture content absorbed by the vegetable oil, and the function of the tap switching apparatus accompanying it are not impaired.
このように、第１発明の変圧器によれば、タップ切換装置に植物油を用いた場合にも、植物油の性状の変化を抑制し、タップ切換装置の性能維持を図ることができる。
Thus, according to the transformer of the first invention, even when vegetable oil is used for the tap switching device, it is possible to suppress changes in the properties of the vegetable oil and maintain the performance of the tap switching device.
第２発明の変圧器は、第１発明の変圧器において、前記容器に接続され、該容器から流入した前記植物油が貯留される油膨張室を備え、前記遮蔽体は、前記油膨張室内に貯留された前記植物油以外の空間部分を塞ぐように設けられ、内部が該油膨張室外と連通する袋体であることを特徴とする。
A transformer according to a second aspect of the invention is the transformer according to the first aspect of the invention, comprising an oil expansion chamber connected to the container and storing the vegetable oil flowing in from the container, wherein the shield is stored in the oil expansion chamber. It is provided so that space parts other than the said vegetable oil may be plugged up, and the inside is a bag body connected to this oil expansion chamber exterior.
第２発明の変圧器によれば、タップ切換装置が収容される容器に注入された植物油は、該容器内を充満して油膨張室に流入するため、該容器内に空気と接触する表面を持つことがない。そして、植物油は、油膨張室内で、植物油以外の空間部分を塞ぐように設けられた袋体により、その表面が覆われる。袋体は、その内部が膨張室外と連通しているため、植物油の膨張および収縮に伴う前記空間の変化に対応して収縮および膨張することで、植物油の表面を覆い続けることができる。これにより、空気中の水分が植物油に吸収されることが抑制されるため、タップ切換装置に植物油を用いた場合にも、植物油の性状の変化を抑制し、タップ切換装置の性能維持を図ることができる。
According to the transformer of the second invention, the vegetable oil injected into the container in which the tap switching device is accommodated fills the container and flows into the oil expansion chamber. Never have. And the surface of vegetable oil is covered with the bag provided so that the space part other than vegetable oil might be plugged up in an oil expansion chamber. Since the bag body communicates with the outside of the expansion chamber, the bag body can continue to cover the surface of the vegetable oil by contracting and expanding in response to the change in the space accompanying the expansion and contraction of the vegetable oil. As a result, moisture in the air is suppressed from being absorbed by the vegetable oil, so even when vegetable oil is used in the tap switching device, the change in the properties of the vegetable oil is suppressed and the performance of the tap switching device is maintained. Can do.
図１を参照して、本実施形態の変圧器１について説明する。
With reference to FIG. 1, the transformer 1 of this embodiment is demonstrated.
変圧器１は、図１に模式的に示すように、タンク２内に変圧器本体３を収容し、内部に絶縁液体としての菜種油４を注入含浸した状態で密封された構造となっている。変圧器本体３は、鉄心３ａに一次、二次のコイル３ｂを巻装して構成されている。さらに、変圧器１は、タンク２内に収容されたタップ切換装置５を備え、タップ切換装置５が、一次、二次コイル３ｂにそれぞれ接続されている。
As schematically shown in FIG. 1, the transformer 1 has a structure in which a transformer main body 3 is accommodated in a tank 2 and sealed with a rapeseed oil 4 as an insulating liquid injected and impregnated therein. The transformer body 3 is configured by winding primary and secondary coils 3b around an iron core 3a. Furthermore, the transformer 1 includes a tap switching device 5 housed in the tank 2, and the tap switching device 5 is connected to the primary and secondary coils 3b, respectively.
タップ切換装置５は、切換装置タンク５ａ（本発明の容器に相当する）内に、任意のタップを選択するタップ選択器と、負荷時に負荷電流を遮断して隣接するタップに電流を流す切換開閉器と備える切換装置本体５ｂが収納されている。切換装置タンク５ａ内には、タンク２内に注入された菜種油４と同様の菜種油５ｃが注入されており、切換装置本体５ｂは、菜種油５ｃに浸された状態となっている。
The tap switching device 5 includes a switching device tank 5a (corresponding to the container of the present invention), a tap selector that selects an arbitrary tap, and a switching opening / closing that cuts off the load current when a load is applied and flows current to an adjacent tap. The switching device main body 5b provided with the container is accommodated. A rapeseed oil 5c similar to the rapeseed oil 4 injected into the tank 2 is injected into the switching device tank 5a, and the switching device body 5b is immersed in the rapeseed oil 5c.
切換装置タンク５ａは、切換装置本体５ｂが収納された状態で、タンク２の上側を密閉する上部隔壁２ａに設けられた開口部２ｂを介して、タンク２内に挿入されている。切換装置タンク５ａの上部には、切換開閉器を駆動するためのモータ６ａの駆動軸に連結された駆動機構６ｂが設けられており、駆動機構６ｂによりモータ６ａの回転が減速された上で、切換開閉器が摺動して接点（電極）が切り換わる。なお、本実施形態において、接点の切換時のアークにより発生するカーボンの油汚損を防止すべく、接点部分を真空状態にした真空バルブを採用している。
The switching device tank 5a is inserted into the tank 2 through the opening 2b provided in the upper partition 2a that seals the upper side of the tank 2 in a state where the switching device main body 5b is accommodated. A driving mechanism 6b connected to the driving shaft of the motor 6a for driving the switching switch is provided at the upper part of the switching device tank 5a. After the rotation of the motor 6a is decelerated by the driving mechanism 6b, The switching switch slides and the contact (electrode) is switched. In the present embodiment, a vacuum valve in which the contact portion is in a vacuum state is employed in order to prevent carbon oil contamination caused by an arc when switching the contact.
次に、図２を参照して、切換装置タンク５ａ内に接続された油膨張室１０について説明する。
Next, the oil expansion chamber 10 connected in the switching device tank 5a will be described with reference to FIG.
油膨張室１０は、切換装置タンク５ａと油膨張室１０とを連通させる連通管１１と、油膨張室１０内に設けられたゴム袋１２（本発明の遮蔽体としての袋体に相当する）と、ゴム袋１２の内部と連通した接続管１３と、接続管１３の端部に設けられた吸湿呼吸器１４と、油膨張室１０内の菜種油５ｃの油量を測るオイルレベルゲージ１５を備える。
The oil expansion chamber 10 includes a communication pipe 11 that allows the switching device tank 5a and the oil expansion chamber 10 to communicate with each other, and a rubber bag 12 provided in the oil expansion chamber 10 (corresponding to a bag body as a shield of the present invention). A connecting pipe 13 communicating with the inside of the rubber bag 12, a hygroscopic respirator 14 provided at an end of the connecting pipe 13, and an oil level gauge 15 for measuring the amount of rapeseed oil 5c in the oil expansion chamber 10. .
連通管１１は、切換装置タンク５ａと油膨張室１０との間で菜種油５ｃを流出入させるための管路であって、油の注入時には、切換装置タンク５ａに充填された菜種油５ｃが該連通管１１を介して油膨張室１０内に所定量流入する。一方、通常の変圧器１の使用時には、変圧器１およびタップ切換装置５の温度上昇に伴う菜種油５ｃの体積変化により、菜種油５ｃが切換装置タンク５ａと油膨張室１０との間で流出入する。
The communication pipe 11 is a conduit for allowing the rapeseed oil 5c to flow in and out between the switching device tank 5a and the oil expansion chamber 10, and the rapeseed oil 5c filled in the switching device tank 5a is communicated with the rapeseed oil 5c when oil is injected. A predetermined amount flows into the oil expansion chamber 10 through the pipe 11. On the other hand, when the normal transformer 1 is used, the rapeseed oil 5c flows in and out between the switching device tank 5a and the oil expansion chamber 10 due to the volume change of the rapeseed oil 5c accompanying the temperature rise of the transformer 1 and the tap switching device 5. .
油膨張室１０は、円筒形状の筐体であって、下部で連通管１１が接続されると共に、上部で接続管１３に接続されている。
The oil expansion chamber 10 is a cylindrical housing, and is connected to the communication pipe 11 at the lower part and to the connection pipe 13 at the upper part.
そして、油膨張室１０内の上側には、接続管１３に接続されたゴム袋１２が油膨張室１０内の菜種油５ｃ以外の空間部分を塞ぐように設けられている。ゴム袋１２内には接続管１３および吸湿呼吸器１４を介して大気圧が掛かるため、ゴム袋１２は、この内部圧力と、菜種油５ｃによる外部圧力との圧力差に応じて収縮若しくは膨張する。
The rubber bag 12 connected to the connecting pipe 13 is provided on the upper side in the oil expansion chamber 10 so as to block the space other than the rapeseed oil 5c in the oil expansion chamber 10. Since the atmospheric pressure is applied to the inside of the rubber bag 12 via the connecting pipe 13 and the hygroscopic respirator 14, the rubber bag 12 contracts or expands according to the pressure difference between the internal pressure and the external pressure due to the rapeseed oil 5c.
ここで、油膨張室１０の上方には、図示しない空気抜き弁が設けられており、油の注入時に空気抜き弁を開弁させることにより、切換装置タンク５ａから油膨張室１０内に流入した菜種油５ｃが油膨張室１０内のゴム袋１２以外の空間すべてに充満し、やがて、空気抜き弁から菜種油５ｃが吐出する。この状態で、空気抜き弁を閉弁させることで、油膨張室１０内の菜種油５ｃは、空気と接触する表面部分が無い状態に維持されている。
Here, an air vent valve (not shown) is provided above the oil expansion chamber 10, and the rapeseed oil 5c that has flowed into the oil expansion chamber 10 from the switching device tank 5a is opened by opening the air vent valve when oil is injected. Fills all the spaces in the oil expansion chamber 10 except the rubber bag 12, and eventually the rapeseed oil 5c is discharged from the air vent valve. In this state, by closing the air vent valve, the rapeseed oil 5c in the oil expansion chamber 10 is maintained in a state where there is no surface portion in contact with air.
吸湿呼吸器１４は、その内部に乾燥剤（シリカゲル）が封入され、外気の除湿を行う装置であって、吸湿呼吸器１４の下部には乾燥剤を常時外気に晒さないように図示しないオイルポット等が設けられている。
The hygroscopic respirator 14 is a device for dehumidifying the outside air with a desiccant (silica gel) enclosed therein, and an oil pot (not shown) is provided below the hygroscopic respirator 14 so that the desiccant is not always exposed to the outside air. Etc. are provided.
オイルレベルゲージ１５は、ゴム袋１２の下端部に接触する接点部１５ａが先端に取り付けられたアーム部１５ｂにより、油膨張室１０内の菜種油５ｃの高さ変化をアーム部１５ｂの角度変化として検出する。
The oil level gauge 15 detects a change in the height of the rapeseed oil 5c in the oil expansion chamber 10 as a change in the angle of the arm 15b by an arm 15b having a contact 15a that contacts the lower end of the rubber bag 12 attached to the tip. To do.
上記構成の変圧器１によれば、切換装置タンク５ａ内の菜種油５ｃが収縮すると、外気が吸湿呼吸器１４に吸収されて乾燥空気となり、該乾燥空気が接続管１３を介してゴム袋１２に取り込まれて、ゴム袋１２が膨張する。一方、切換装置タンク５ａ内の菜種油５ｃが膨張すると、ゴム袋１２内の乾燥空気が接続管１３を介して吸湿呼吸器１４に押し出されて、外気に放出される。
According to the transformer 1 having the above-described configuration, when the rapeseed oil 5c in the switching device tank 5a contracts, the outside air is absorbed by the hygroscopic respirator 14 to become dry air, and the dry air enters the rubber bag 12 through the connecting pipe 13. The rubber bag 12 is inflated by being taken in. On the other hand, when the rapeseed oil 5c in the switching device tank 5a expands, the dry air in the rubber bag 12 is pushed out to the hygroscopic respirator 14 through the connecting pipe 13 and released to the outside air.
そして、かかる菜種油５ｃの膨張および収縮において、油膨張室１０内の菜種油５ｃが外気等に触れることがないため、空気中の水分が植物油に吸収されることが抑制される。さらに、ゴム袋１２内の空気も吸湿呼吸器１４を通過した乾燥空気であるため、ゴム袋１２を介して外気中の水分が菜種油５ｃに吸収されることも抑制される。これにより、菜種油５ｃに吸収された水分がスラッチに変化することによる菜種油５ｃ自体の性状が変化し、ひいてはタップ切換装置５自体の機能が損なわれることもない。
And in the expansion | swelling and shrinkage | contraction of this rapeseed oil 5c, since the rapeseed oil 5c in the oil expansion chamber 10 does not touch external air etc., it is suppressed that the water | moisture content in air is absorbed by vegetable oil. Furthermore, since the air in the rubber bag 12 is also dry air that has passed through the hygroscopic respirator 14, the moisture in the outside air is prevented from being absorbed by the rapeseed oil 5c through the rubber bag 12. Thereby, the property of the rapeseed oil 5c itself is changed by changing the moisture absorbed in the rapeseed oil 5c into a slat, and the function of the tap switching device 5 itself is not impaired.
このように、本実施形態の変圧器１によれば、タップ切換装置５に植物油としての菜種油５ｃを用いた場合にも、菜種油５ｃの性状の変化を抑制し、タップ切換装置５の性能維持を図ることができる。
Thus, according to the transformer 1 of this embodiment, even when the rapeseed oil 5c as vegetable oil is used for the tap switching device 5, the change in the properties of the rapeseed oil 5c is suppressed, and the performance of the tap switching device 5 is maintained. Can be planned.
なお、本実施形態において、絶縁液体としての植物油を、菜種油として説明したが、これに限定されるものではなく、例えば、大豆油、ヒマワリ油、綿実油、オリーブ油、ベニバナ油、ホホバ油、レスケレラ油およびベロニア油等であってもよい。
In the present embodiment, the vegetable oil as the insulating liquid has been described as rapeseed oil, but is not limited thereto. Veronia oil or the like may be used.
また、本実施形態において、遮蔽体としてゴム袋１２を油膨張室１０に備える構成について説明したが、これに限定されるものではなく、遮蔽体は切換装置タンク５ａ内に注入された菜種油５ｃの表面を覆うものであればよい。例えば、油膨張室１０を設けることなく、切換装置タンク５ａ内の菜種油５ｃの表面全体を覆う空気袋等を設けるようにしてもよい。
Moreover, in this embodiment, although the structure provided with the rubber bag 12 in the oil expansion chamber 10 as a shield was demonstrated, it is not limited to this, A shield is the rapeseed oil 5c inject | poured in the switching apparatus tank 5a. Any material that covers the surface may be used. For example, you may make it provide the air bag etc. which cover the whole surface of the rapeseed oil 5c in the switching apparatus tank 5a, without providing the oil expansion chamber 10. FIG.
１…変圧器、２…タンク、３…変圧器本体、４，５ｃ…菜種油（植物油）、５…タップ切換装置、５ａ…切換装置タンク（容器）、５ｂ…切換装置本体、１０…油膨張室、１２…ゴム袋（袋体、遮蔽体）、１４…吸湿呼吸器。
DESCRIPTION OF SYMBOLS 1 ... Transformer, 2 ... Tank, 3 ... Transformer main body, 4, 5c ... Rapeseed oil (vegetable oil), 5 ... Tap switching device, 5a ... Switching device tank (container), 5b ... Switching device main body, 10 ... Oil expansion chamber , 12 ... rubber bags (bags, shields), 14 ... hygroscopic respirators.
Claims (2)
- タップ切換装置を有する変圧器であって、
前記タップ切換装置が収容される容器と、
前記容器内に注入された絶縁液体としての植物油と、
前記植物油と空気との接触を遮断するように該植物油の表面を覆う遮蔽体と
を備えることを特徴とする変圧器。 A transformer having a tap switching device,
A container in which the tap switching device is accommodated;
Vegetable oil as an insulating liquid injected into the container;
A transformer comprising: a shield covering a surface of the vegetable oil so as to block contact between the vegetable oil and air. - 請求項１記載の変圧器において、
前記容器に接続され、該容器から流入した前記植物油が貯留される油膨張室を備え、
前記遮蔽体は、前記油膨張室内に貯留された前記植物油以外の空間部分を塞ぐように設けられ、内部が該油膨張室外と連通する袋体であることを特徴とする変圧器。 The transformer according to claim 1, wherein
An oil expansion chamber connected to the container and storing the vegetable oil flowing from the container;
The said shielding body is a bag body provided so that the space parts other than the said vegetable oil stored in the said oil expansion chamber may be plugged up, and the inside is a bag body connected to this oil expansion chamber exterior.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201080038088.6A CN102483985B (en) | 2009-08-27 | 2010-07-12 | Electric transformer |
| HK12112061.5A HK1171284A1 (en) | 2009-08-27 | 2012-11-23 | Electric transformer |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-196425 | 2009-08-27 | ||
| JP2009196425A JP5209581B2 (en) | 2009-08-27 | 2009-08-27 | Transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011024570A1 true WO2011024570A1 (en) | 2011-03-03 |
Family
ID=43627681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2010/061780 WO2011024570A1 (en) | 2009-08-27 | 2010-07-12 | Electric transformer |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5209581B2 (en) |
| CN (1) | CN102483985B (en) |
| HK (1) | HK1171284A1 (en) |
| WO (1) | WO2011024570A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2012156990A2 (en) * | 2011-05-10 | 2012-11-22 | Mhala Anil Sahadeo | Air restoring breather |
| CN103943318A (en) * | 2014-03-18 | 2014-07-23 | 国家电网公司 | 35 kV level vegetable insulating oil H-level insulation power transformer |
| JP2016157758A (en) * | 2015-02-24 | 2016-09-01 | 愛知電機株式会社 | Motor operation mechanism of tap changer in loading state |
| JP6850176B2 (en) * | 2017-03-29 | 2021-03-31 | 東芝産業機器システム株式会社 | Static guidance device |
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| JPS5788710A (en) * | 1980-11-21 | 1982-06-02 | Toshiba Corp | On-load tap changer |
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| JPH04307905A (en) * | 1991-04-05 | 1992-10-30 | Takaoka Electric Mfg Co Ltd | Gas-insulating electric apparatus |
| JPH08250347A (en) * | 1995-03-13 | 1996-09-27 | Toshiba Corp | Oil-immersed stationary electric equipment |
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| JP4903498B2 (en) * | 2006-06-09 | 2012-03-28 | フタバ産業株式会社 | Fuel injection pipe |
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| CN101266871A (en) * | 2007-12-28 | 2008-09-17 | 中电电气集团有限公司 | Oil box respiration device |
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- 2010-07-12 WO PCT/JP2010/061780 patent/WO2011024570A1/en active Application Filing
- 2010-07-12 CN CN201080038088.6A patent/CN102483985B/en active Active
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- 2012-11-23 HK HK12112061.5A patent/HK1171284A1/en unknown
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| JPS5991602A (en) * | 1982-11-16 | 1984-05-26 | 三菱電機株式会社 | Oil-immersed electric device |
| JPH0211310U (en) * | 1988-07-04 | 1990-01-24 | ||
| JPH07326522A (en) * | 1994-05-31 | 1995-12-12 | Meidensha Corp | Moisture absorption breathing device |
| JP2001297920A (en) * | 2000-04-12 | 2001-10-26 | Toyo Tire & Rubber Co Ltd | Insulating oil cover in transformer conservator |
| JP2006114615A (en) * | 2004-10-13 | 2006-04-27 | Toshiba Corp | Electromagnetic induction apparatus with on-load tap changer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5209581B2 (en) | 2013-06-12 |
| CN102483985A (en) | 2012-05-30 |
| HK1171284A1 (en) | 2013-03-22 |
| JP2011049358A (en) | 2011-03-10 |
| CN102483985B (en) | 2015-03-25 |
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