JPH04291706A - Oil extractor - Google Patents
Oil extractorInfo
- Publication number
- JPH04291706A JPH04291706A JP5674791A JP5674791A JPH04291706A JP H04291706 A JPH04291706 A JP H04291706A JP 5674791 A JP5674791 A JP 5674791A JP 5674791 A JP5674791 A JP 5674791A JP H04291706 A JPH04291706 A JP H04291706A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- valve
- insulating
- line
- bellows
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000605 extraction Methods 0.000 claims abstract description 15
- 238000004891 communication Methods 0.000 claims abstract description 10
- 238000005070 sampling Methods 0.000 claims description 22
- 238000003745 diagnosis Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Transformer Cooling (AREA)
Abstract
Description
【０００１】［発明の目的］[Object of the invention]
【０００２】0002
【産業上の利用分野】本発明は、変電設備に使用される
変流器等のような密封形油入絶縁機器の保全診断で、絶
縁油の油中ガス分析を行う際に用いる採油装置に関する
。[Field of Industrial Application] The present invention relates to an oil extraction device used when performing gas-in-oil analysis of insulating oil in maintenance diagnosis of sealed oil-filled insulating equipment such as current transformers used in electrical substation equipment. .
【０００３】0003
【従来の技術】周知のように密封形油入絶縁機器（以下
、機器という）は、通常頭部に空間を設け、内部に封入
されている絶縁油の周囲温度の変化等による膨脹収縮を
吸収するようにしている。また、上記した空間には、窒
素ガスのような不活性ガスを封入し、内部の絶縁油が外
気と接触しないようにしている。ところで、この封入さ
れている不活性ガスは、経年につれて絶縁油中に溶解し
、長期間使用した機器では上記した頭部の空間が負圧に
なる。このため、保全診断において、絶縁油を採取する
ために採取口を開いたとき外部の空気を吸込み、機器の
絶縁耐力低下を生じることがある。そこで、採油時には
事前に上記した頭部の空間のガス圧を測定し、負圧の場
合には正圧に調整した後採油口を開き、採油容器に絶縁
油を採取するようにしている。[Prior Art] As is well known, sealed oil-filled insulating equipment (hereinafter referred to as equipment) usually has a space in its head to absorb the expansion and contraction of the insulating oil sealed inside due to changes in ambient temperature, etc. I try to do that. Furthermore, the space described above is filled with an inert gas such as nitrogen gas to prevent the insulating oil inside from coming into contact with the outside air. By the way, this sealed inert gas dissolves into the insulating oil over time, and in devices that have been used for a long period of time, the above-mentioned head space becomes negative pressure. For this reason, when the sampling port is opened to sample insulating oil during maintenance diagnosis, outside air may be sucked in, resulting in a decrease in the dielectric strength of the equipment. Therefore, when collecting oil, the gas pressure in the above-mentioned head space is measured in advance, and if the pressure is negative, the pressure is adjusted to positive before opening the oil sampling port and collecting the insulating oil into the oil sampling container.
【０００４】0004
【発明が解決しようとする課題】しかしながら、変流器
のような高電圧機器の頭部は、一般に高所にあるので採
油するためには、高所作業用の足場を設置したり、保全
診断終了後この足場を解体する作業等が付随作業として
必要となり、大がかりな作業となっていた。したがって
、機器の所要停止時間も長時間となる。一方、繰返しの
採油や、少油量機器の採油をする場合、補充油の注油作
業も別途必要になり、保全診断作業をさらに長時間のも
のとしている。そこで、機器の保全診断作業で採油をす
る場合、上記したような内部圧力の測定、採油および補
充油注入等の一連の作業が、機器の接地ケースに付属す
る採油口を使用する作業のみですみ、高所作業が不要と
なり、機器の所要停止時間が短縮可能な装置の開発が望
まれていた。[Problem to be Solved by the Invention] However, the heads of high-voltage equipment such as current transformers are generally located at high places, so in order to extract oil, it is necessary to install scaffolding for work at high places and perform maintenance diagnosis. After the completion of the project, dismantling the scaffolding was required as ancillary work, making it a large-scale task. Therefore, the required downtime of the equipment also becomes long. On the other hand, when repeatedly drawing oil or drawing oil from equipment with a small amount of oil, additional oil lubrication work is required, making the maintenance diagnosis work even more time consuming. Therefore, when sampling oil for equipment maintenance diagnosis work, a series of operations such as measuring the internal pressure, oil sampling, and replenishment oil injection as described above can be completed by simply using the oil sampling port attached to the grounding case of the equipment. There was a desire to develop a device that would eliminate the need for work at heights and shorten the required downtime of equipment.
【０００５】本発明は、上記した要望を満足すべくなさ
れたもので、採油作業の簡易化と機器の所要停止時間短
縮を図った採油装置を提供することを目的としている。
［発明の構成］The present invention has been made to satisfy the above-mentioned needs, and an object of the present invention is to provide an oil extraction device that simplifies oil extraction work and shortens the required stop time of the equipment. [Structure of the invention]
【０００６】[0006]
【課題を解決するための手段】本発明は、それぞれの端
部にバルブを設けた第１，第２，第３および第４の各連
通孔を有し、第１の連通孔が密封形油入絶縁機器の注油
口または採油口に着脱可能に接続する採油容器と、第２
の連通孔に接続する真空吸引装置と、第３の連通孔に接
続する圧力計および補給用の絶縁油を収容した油槽と、
第４の連通孔に接続し、外力を付加することにより内容
積を変化できるようにした円筒状部材で構成したもので
ある。[Means for Solving the Problems] The present invention has first, second, third, and fourth communicating holes each having a valve at each end, and the first communicating hole is a sealed oil-filled type. an oil sampling container that is removably connected to the oil filling port or oil sampling port of the insulated equipment;
a vacuum suction device connected to the third communication hole; a pressure gauge connected to the third communication hole; and an oil tank containing insulating oil for replenishment;
It is constructed of a cylindrical member that is connected to the fourth communication hole and whose internal volume can be changed by applying an external force.
【０００７】[0007]
【作用】密封形油入絶縁機器と圧力計を連通させること
によって内圧を測定し、円筒状部材を含む内部の空気を
真空吸引装置で排気した後油槽内の絶縁油を円筒状部材
に導き、円筒状部材に外力を付加して内容積を変化させ
ることによってこの絶縁油を密封形油入絶縁機器内の絶
縁油と置換し、この後採油容器の各バルブを閉じる。[Operation] The internal pressure is measured by communicating the sealed oil-filled insulating device with the pressure gauge, and after exhausting the air inside the cylindrical member with a vacuum suction device, the insulating oil in the oil tank is guided to the cylindrical member. By applying an external force to the cylindrical member and changing its internal volume, this insulating oil is replaced with the insulating oil in the sealed oil-filled insulating device, and then each valve of the oil sampling container is closed.
【０００８】[0008]
【実施例】以下、本発明の一実施例を図面を参照して説
明する。図１は、本発明の一実施例を一部切断して示す
構成図である。同図において、１は絶縁油を封入した変
流器、２はこの変流器１の接地ケースで、この接地ケー
ス２には採油用の採油口バルブ３が設けられ、採油容器
４が接続されている。この採油容器４は、端部にそれぞ
れバルブ５，６，７および８を設けた連通孔を有し、バ
ルブ５は採油口バルブ３に接続し、バルブ６は真空ポン
プ９に接続し、バルブ７は接続部材１０ａを介してゲー
ジ１０および油タンク１１のバルブ１２に接続し、バル
ブ８はフランジ１３に接続している。また、油タンク１
１には、脱気された絶縁油が収容されており、フランジ
１３には、採油容器４と連通する孔１３ａが設けられ、
孔１３ａを介して採油容器４と連通するベローズ１４が
取付けられる。このベローズ１４は、開口側の端部をフ
ランジ１３とベローズ１４を包囲するような形状とした
ベローズケース１５により挟まれ、ねじ１６を締付ける
ことにより圧縮固定され、ベローズ１４内を密封してい
る。ベローズ１４の非開口側（同図の右側）端部にはピ
ストン板１７を接着固定し、このピストン板１７にねじ
込みその他の手段によりピストン棒１８を取付ける。ピ
ストン棒１８の把持部側は、ベローズケース１５の外部
に突出している。なお、上記したバルブ５は、採油口バ
ルブ３に接続された接続部材１９とフランジ接続し、バ
ルブ６は、真空ポンプ９と吸入口または吸入口に接続さ
れた配管９ａとフランジ接続し、バルブ７は、接続部材
１０ａとフランジ接続し、バルブ８は、フランジ１３に
設けた接続部１３ｂとフランジ接続している。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway configuration diagram showing an embodiment of the present invention. In the figure, 1 is a current transformer sealed with insulating oil, 2 is a grounding case of this current transformer 1, this grounding case 2 is provided with an oil sampling port valve 3 for oil sampling, and an oil sampling container 4 is connected to it. ing. This oil sampling container 4 has a communication hole provided with valves 5, 6, 7 and 8 at each end, valve 5 is connected to the oil sampling port valve 3, valve 6 is connected to a vacuum pump 9, and valve 7 is connected to the oil sampling port valve 3. is connected to the gauge 10 and the valve 12 of the oil tank 11 via the connecting member 10a, and the valve 8 is connected to the flange 13. Also, oil tank 1
1 contains deaerated insulating oil, and the flange 13 is provided with a hole 13a that communicates with the oil sampling container 4.
A bellows 14 is attached which communicates with the oil sampling container 4 through the hole 13a. The bellows 14 is sandwiched between a bellows case 15 whose opening end is shaped to surround the flange 13 and the bellows 14, and is compressed and fixed by tightening a screw 16, thereby sealing the inside of the bellows 14. A piston plate 17 is adhesively fixed to the non-opening side (right side in the figure) end of the bellows 14, and a piston rod 18 is attached to the piston plate 17 by screwing or other means. The gripping portion side of the piston rod 18 protrudes to the outside of the bellows case 15. The above-mentioned valve 5 is flange-connected to a connecting member 19 connected to the oil extraction port valve 3, the valve 6 is flange-connected to the vacuum pump 9 and the suction port, or the piping 9a connected to the suction port, and the valve 7 is connected to the valve 7 by a flange. is flange-connected to the connecting member 10a, and the valve 8 is flange-connected to a connecting portion 13b provided on the flange 13.
【０００９】次に、以上のように構成された実施例の作
用を説明する。まず、（１）採油口バルブ３，バルブ１
２を閉じ、バルブ５，６，７および８を開き、ピストン
棒１８を押しピストン板１７を充分押込んでベローズ１
５を収縮させる。この後、 （２）真空ポンプ９を運転
し、採油容器４，ベローズ１４，ゲージ１０の内部の空
気を排気し、この後バルブ６を閉じる。この後、 （３
）バルブ１２を開き、ピストン棒１８を引いてベローズ
板１７をベローズケース１５の端の所定位置に移動させ
、ベローズ１４を拡げる。これにより、油タンク１１内
の絶縁油が採油容器４，ベローズ１４，ゲージ１０内に
注入される。この後、 （４）バルブ１２を閉じ、採油
口バルブ３を開き、変流器１の内圧をゲージ１０により
測定する。この後、 （５）バルブ７を閉じ、ピストン
棒１８を複数回押引き採油容器４内の絶縁油を変流器１
内の絶縁油に置換した後、ピストン棒１８を引いて所定
位置に固定する。この後、 （６）採油口バルブ３，バ
ルブ５，６，７，８を閉じ、採油容器４を封じ切る。こ
の後、 （７）採油容器４を、採油口バルブ３，ゲージ
１０，真空ポンプ９，フランジ１３より取外すことによ
り、採油，注油，内圧測定の作業が完了する。なお、複
数台の機器を採油する場合は、採油容器４を新たに付け
替えると共にベローズ１４を付け替えることにより、新
たに採油を繰返すことができる。Next, the operation of the embodiment configured as above will be explained. First, (1) Oil extraction port valve 3, valve 1
2, open valves 5, 6, 7, and 8, push the piston rod 18, push the piston plate 17 fully, and close the bellows 1.
Deflate 5. After this, (2) the vacuum pump 9 is operated to exhaust the air inside the oil collection container 4, bellows 14, and gauge 10, and then the valve 6 is closed. After this, (3
) Open the valve 12, pull the piston rod 18 to move the bellows plate 17 to a predetermined position at the end of the bellows case 15, and expand the bellows 14. As a result, the insulating oil in the oil tank 11 is injected into the oil sampling container 4, bellows 14, and gauge 10. After that, (4) close the valve 12, open the oil extraction port valve 3, and measure the internal pressure of the current transformer 1 with the gauge 10; After that, (5) Close the valve 7, push and pull the piston rod 18 several times, and transfer the insulating oil in the oil collection container 4 to the current transformer 1.
After replacing the inside with insulating oil, the piston rod 18 is pulled and fixed in a predetermined position. After this, (6) close the oil extraction port valve 3, valves 5, 6, 7, and 8, and seal off the oil extraction container 4; After that, (7) the oil sampling container 4 is removed from the oil sampling port valve 3, gauge 10, vacuum pump 9, and flange 13, thereby completing the oil sampling, oil filling, and internal pressure measurement operations. In addition, when extracting oil from a plurality of devices, oil extraction can be repeated anew by replacing the oil extraction container 4 and the bellows 14.
【００１０】0010
【発明の効果】以上説明したように本発明によれば、密
封形油入絶縁機器の保全診断等における採油作業を、付
随する内圧測定および調整または採油後の補充作業を含
めて簡易化することができ、従来必要としていた高所作
業を省略し、所要時間を大幅に短縮して当該密封形油入
絶縁機器の運転停止時間を短縮することが可能な採油装
置を提供することができる。[Effects of the Invention] As explained above, according to the present invention, oil extraction work for maintenance diagnosis of sealed oil-filled insulating equipment, etc., including accompanying internal pressure measurement and adjustment, and replenishment work after oil extraction, can be simplified. It is possible to provide an oil extraction device that can omit the work at high places that was conventionally required, significantly shorten the required time, and shorten the operation stop time of the sealed oil-filled insulating equipment.
【図１】本発明の一実施例を一部切断して示す構成図。FIG. 1 is a partially cutaway configuration diagram showing an embodiment of the present invention.
１…変流器、２…接地ケース、３…採油口バルブ、４…
採油容器、５，６，７，８，１２…バルブ、９…真空ポ
ンプ、１０…ゲージ、１１…油タンク、１３…フランジ
、１４…ベローズ、１５…ベローズケース、１８…ピス
トン棒。1...Current transformer, 2...Grounding case, 3...Oil intake valve, 4...
Oil collection container, 5, 6, 7, 8, 12... valve, 9... vacuum pump, 10... gauge, 11... oil tank, 13... flange, 14... bellows, 15... bellows case, 18... piston rod.
Claims (1)
，第２，第３および第４の各連通孔を有し、第１の連通
孔が密封形油入絶縁機器の注油口または採油口に着脱可
能に接続する採油容器と、前記第２の連通孔に接続する
真空吸引装置と、前記第３の連通孔に接続する圧力計お
よび補給用の絶縁油を収容した油槽と、前記第４の連通
孔に接続し、外力を付加することにより内容積を変化で
きるようにした円筒状部材とから構成したことを特徴と
する採油装置。[Claim 1] A first valve having a valve at each end.
, a second, third, and fourth communication hole, the first communication hole being removably connected to an oil filling port or an oil sampling port of a sealed oil-filled insulating device, and the second communication hole. A vacuum suction device connected to the hole, a pressure gauge connected to the third communication hole, and an oil tank containing insulating oil for replenishment are connected to the fourth communication hole, and the internal volume is increased by applying an external force. An oil extraction device characterized in that it is constructed from a cylindrical member that can change the temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5674791A JPH04291706A (en) | 1991-03-20 | 1991-03-20 | Oil extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5674791A JPH04291706A (en) | 1991-03-20 | 1991-03-20 | Oil extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04291706A true JPH04291706A (en) | 1992-10-15 |
Family
ID=13036120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5674791A Pending JPH04291706A (en) | 1991-03-20 | 1991-03-20 | Oil extractor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04291706A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616274A (en) * | 2013-11-28 | 2014-03-05 | 国家电网公司 | Pretreatment device and pretreatment method for transformer oil |
| CN103713559A (en) * | 2013-12-31 | 2014-04-09 | 哈尔滨泰富电气有限公司 | Dragging system for electricity-stealing-prevention energy-saving pumping unit |
| CN104676175A (en) * | 2015-01-29 | 2015-06-03 | 江苏广通管业制造有限公司 | Novel vacuum four-way connector |
| CN104806833A (en) * | 2015-03-03 | 2015-07-29 | 南车青岛四方机车车辆股份有限公司 | Connection device, traction cooling system and multiple units |
-
1991
- 1991-03-20 JP JP5674791A patent/JPH04291706A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616274A (en) * | 2013-11-28 | 2014-03-05 | 国家电网公司 | Pretreatment device and pretreatment method for transformer oil |
| CN103713559A (en) * | 2013-12-31 | 2014-04-09 | 哈尔滨泰富电气有限公司 | Dragging system for electricity-stealing-prevention energy-saving pumping unit |
| CN104676175A (en) * | 2015-01-29 | 2015-06-03 | 江苏广通管业制造有限公司 | Novel vacuum four-way connector |
| CN104806833A (en) * | 2015-03-03 | 2015-07-29 | 南车青岛四方机车车辆股份有限公司 | Connection device, traction cooling system and multiple units |
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