JP3247362B1 - Perforated needle, insulating oil recovery device using the same, and insulating oil recovery method - Google Patents
Perforated needle, insulating oil recovery device using the same, and insulating oil recovery methodInfo
- Publication number
- JP3247362B1 JP3247362B1 JP2001157189A JP2001157189A JP3247362B1 JP 3247362 B1 JP3247362 B1 JP 3247362B1 JP 2001157189 A JP2001157189 A JP 2001157189A JP 2001157189 A JP2001157189 A JP 2001157189A JP 3247362 B1 JP3247362 B1 JP 3247362B1
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- Japan
- Prior art keywords
- insulating oil
- needle
- container
- hole
- tapered portion
- 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.)
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- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
【要約】
【課題】 容器外面およびその周囲を汚染することな
く、切り粉等を混入させずに迅速にコンデンサ中の絶縁
油を回収することができる穿孔針を提供する。
【解決手段】 本発明は、容器内に絶縁油を充填して構
成されたコンデンサＣから前記絶縁油を回収するために
用いられる穿孔針１であって、先端に先細のテーパ部を
有し、前記絶縁油を回収するための回収経路に連通され
た孔部が前記テーパ部に設けられており、前記孔部が負
圧発生手段３等を用いて負圧状態に維持されつつ、押圧
力調整部２等を用いて前記容器内に圧入可能であるべく
構成されている。An object of the present invention is to provide a piercing needle that can quickly collect insulating oil in a capacitor without contaminating the outer surface of a container and its surroundings without mixing chips or the like. SOLUTION: The present invention relates to a perforated needle 1 used for collecting the insulating oil from a capacitor C formed by filling a container with the insulating oil, the needle having a tapered tapered portion at the tip, A hole communicating with a recovery path for recovering the insulating oil is provided in the tapered portion, and the pressure is adjusted while maintaining the hole in a negative pressure state by using negative pressure generating means 3 or the like. It is configured to be press-fittable into the container using the part 2 or the like.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ＰＣＢ（ポリ塩素
化ビフェニル）を含有する絶縁油の処理に関し、詳しく
は、コンデンサを成す容器内に充填された絶縁油を回収
する際に用いられる穿孔針、およびこの穿孔針を用いた
絶縁油回収装置、ならびに絶縁油回収方法に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the treatment of insulating oil containing PCB (polychlorinated biphenyl), and more particularly, to a perforated needle used for collecting insulating oil filled in a container forming a capacitor. And an insulating oil recovery apparatus using the perforated needle, and an insulating oil recovery method.
【０００２】[0002]
【従来の技術】ＰＣＢは、安定性、不燃性、電気絶縁性
に優れていることから、過去において、コンデンサを構
成する際の絶縁油として利用されていた。このように利
用されるＰＣＢは、容易に分解されないため、使用され
たコンデンサが廃棄処理された後には、水、土壌等に蓄
積して、食品等を介して人体に入るおそれがある。ＰＣ
Ｂは、分解されにくく有害であるため、現在はその製造
や新規使用等が禁止されている。2. Description of the Related Art PCBs have been used in the past as insulating oils for forming capacitors because of their excellent stability, nonflammability and electrical insulation. Since the PCB used in this manner is not easily decomposed, after the used capacitor is discarded, it may accumulate in water, soil, or the like, and enter the human body via food or the like. PC
Since B is difficult to decompose and is harmful, its production and new use are currently prohibited.
【０００３】そこで、従来から、ＰＣＢを含有する絶縁
油（以下、単に「絶縁油」という。）を充填して構成さ
れたコンデンサの廃棄処理を行う場合には、コンデンサ
内部の絶縁油は回収後に無害化処理を行う。一方、コン
デンサの容器等は、洗浄、分解、保存等が行われてい
る。例えば、容器洗浄化処理においては、コンデンサ容
器そのもののＰＣＢ残存率が基準値以下となるように洗
浄処理等が行われている。Therefore, conventionally, when a disposal process is performed on a capacitor formed by filling an insulating oil containing PCB (hereinafter, simply referred to as “insulating oil”), the insulating oil inside the capacitor is recovered after being collected. Perform detoxification processing. On the other hand, the container and the like of the condenser are washed, disassembled, stored and the like. For example, in the container cleaning process, a cleaning process or the like is performed so that the PCB residual ratio of the capacitor container itself is equal to or less than a reference value.
【０００４】従来技術において、コンデンサ内部の絶縁
油の回収を行う場合には、例えば、コンデンサのケーシ
ング（容器）にドリル等の切削手段を用いて開口部を形
成し、この開口部を介して絶縁油を回収している。具体
的には、開口部を形成した後に容器を傾倒あるいは倒立
させたり、または、この開口部から吸引等して、絶縁油
の回収を行っている。[0004] In the prior art, when recovering the insulating oil inside the capacitor, for example, an opening is formed in the casing (container) of the capacitor using a cutting means such as a drill, and the insulating material is insulated through the opening. Collecting oil. Specifically, after the opening is formed, the container is tilted or inverted, or the insulating oil is collected by suction or the like from the opening.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記従
来技術においては、次のような問題があった。However, the above-mentioned prior art has the following problems.
【０００６】コンデンサは、通常、容器と、この容器内
に設けられた素子と、先に説明した絶縁油等とを用いて
構成されている。そして、このようにして構成されたコ
ンデンサにおいては、容器内にて適切な絶縁性能を得る
ために、絶縁油が満液状態で充填されている。よって、
このように満液状態で絶縁油が充填された容器に対し、
上述したようなドリル等の切削手段を用いて開口部を形
成すると、この開口部から満液状態の絶縁油が溢流し
て、容器外面およびその周囲が絶縁油によって汚染され
るという問題があった。[0006] The capacitor is usually constituted by using a container, an element provided in the container, and the above-described insulating oil and the like. In the capacitor configured as described above, the insulating oil is filled in a full state in order to obtain an appropriate insulating performance in the container. Therefore,
For a container filled with insulating oil in a full state like this,
When the opening is formed by using a cutting means such as a drill as described above, there is a problem that the insulating oil in a full state overflows from the opening and the outer surface of the container and its surroundings are contaminated with the insulating oil. .
【０００７】また、ドリル等の切削手段を用いて開口部
を形成する場合においては、切削される容器から切り粉
が発生するため、この切り粉が回収される絶縁油に混入
する。回収された絶縁油は、後工程において、複雑な工
程を経て、廃棄あるいは再利用されるわけであるが、上
述したように、絶縁油中に切り粉が混入すると、この切
り粉が絶縁油中の不純物となって、後工程において適切
な処理を行えないという問題があった。さらに、適切な
後工程を行うためには、この絶縁油中から切り粉を取り
除く煩雑な処理を行う必要があるという問題があった。In the case where an opening is formed by using a cutting means such as a drill, chips are generated from a container to be cut, and the chips mix with the recovered insulating oil. The recovered insulating oil is discarded or reused after a complicated process in a later process. However, as described above, if chips are mixed in the insulating oil, the chips are removed from the insulating oil. Therefore, there is a problem that appropriate processing cannot be performed in a subsequent step. Furthermore, in order to perform an appropriate post-process, there is a problem that it is necessary to perform a complicated process of removing chips from the insulating oil.
【０００８】そこで、本発明は、上記従来技術の問題を
解決するためになされたものであって、容器外面および
その周囲を汚染することなく、切り粉等を混入させずに
迅速にコンデンサ中の絶縁油を回収することができる穿
孔針、およびこれを用いた絶縁油回収装置、ならびに絶
縁油回収方法を提供することを課題とする。Therefore, the present invention has been made to solve the above-mentioned problems of the prior art, and does not contaminate the outer surface of the container and its surroundings, and quickly mixes the inside of the capacitor without mixing chips or the like. An object of the present invention is to provide a perforated needle capable of collecting insulating oil, an insulating oil collecting device using the same, and an insulating oil collecting method.
【０００９】[0009]
【課題を解決するための手段】本発明は、上記従来技術
の課題を解決するためになされたもので、容器内に絶縁
油を充填して構成されたコンデンサから前記絶縁油を回
収するために用いられる穿孔針であって、先端に先細の
テーパ部を有し、前記絶縁油を回収するための回収経路
に連通された孔部が前記テーパ部に設けられており、前
記孔部を負圧状態に維持しつつ、前記容器内に圧入可能
であることを特徴としている。ここで、「圧入」とは、
穿孔針にその軸方向のみの押圧力を加えて駆動させる場
合のみならず、軸方向の押圧力と共に、その周方向にお
ける回転力を加えて穿孔針を駆動させる場合を含むもの
とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and is intended to recover the insulating oil from a capacitor formed by filling a container with the insulating oil. A perforating needle to be used, which has a tapered tapered portion at the tip, and a hole communicated with a recovery path for recovering the insulating oil is provided in the tapered portion, and the hole is subjected to a negative pressure. It is characterized in that it can be pressed into the container while maintaining the state. Here, "press-fitting"
Not only the case where the perforating needle is driven by applying the pressing force only in the axial direction but also the case where the perforating needle is driven by applying the rotational force in the circumferential direction together with the pressing force in the axial direction.
【００１０】このように構成された本発明によれば、負
圧状態に維持された前記孔部を備えた穿孔針を圧入して
前記コンデンサ内の前記絶縁油の回収が行われるので、
容器外面およびその周囲を汚染することなく、また、切
り粉等を生ずることなく、前記絶縁油を回収することが
可能となる。したがって、本発明にかかる穿孔針によれ
ば、回収後の後工程を不純物（切り粉等）のない状態で
適切に実施することができる。According to the present invention thus configured, the insulating oil in the capacitor is recovered by press-fitting the perforated needle having the hole maintained in the negative pressure state.
The insulating oil can be recovered without contaminating the outer surface of the container and its surroundings, and without generating chips and the like. Therefore, according to the perforated needle according to the present invention, the post-process after collection can be appropriately performed without impurities (such as chips).
【００１１】また、本発明にかかる穿孔針は、前記容器
の壁面に略垂直な方向の押圧力のみで、前記容器内に圧
入される構成が好ましい。この好ましい構成によれば、
密閉性が高まり、より確実に絶縁油の漏れを防止でき、
より確実に切り粉を発生させることなく、前記絶縁油の
回収を行うことが可能となる。[0011] It is preferable that the puncture needle according to the present invention is press-fitted into the container only by a pressing force in a direction substantially perpendicular to the wall surface of the container. According to this preferred configuration,
The sealing performance is improved, and the leakage of insulating oil can be more reliably prevented.
The insulating oil can be recovered more reliably without generating chips.
【００１２】また、本発明にかかる穿孔針においては、
圧入方向における前記テーパ部の長さが、前記容器の壁
面厚さよりも長い構成が好ましい。この好ましい構成に
よれば、前記テーパ部が前記壁面中に位置した状態にお
いて、前記穿孔針の先端が前記コンデンサ内に挿入され
るため、前記穿孔針先端と前記壁面との間の隙間を最小
限とし、前記絶縁油の溢流を適切に防止することができ
る。[0012] In the perforated needle according to the present invention,
It is preferable that the length of the tapered portion in the press-fit direction is longer than the wall thickness of the container. According to this preferred configuration, in a state where the tapered portion is located in the wall surface, the tip of the puncture needle is inserted into the capacitor, so that a gap between the tip of the puncture needle and the wall surface is minimized. Thus, the overflow of the insulating oil can be appropriately prevented.
【００１３】また、本発明にかかる穿孔針は、前記テー
パ部が前記容器の壁面に位置する状態において、前記孔
部が前記絶縁油に接触可能である構成が好ましい。この
好ましい構成によれば、前記テーパ部が前記容器の壁面
と接する状態において負圧状態に維持された前記孔部が
前記絶縁油に接触するため、適切に溢流を防止しつつ、
前記絶縁油の回収を行うことができる。[0013] In the perforation needle according to the present invention, it is preferable that the hole is in contact with the insulating oil when the tapered portion is located on the wall surface of the container. According to this preferred configuration, the hole maintained in a negative pressure state in contact with the insulating oil in a state where the tapered portion is in contact with the wall surface of the container, while appropriately preventing overflow,
The insulating oil can be recovered.
【００１４】また、本発明にかかる穿孔針は、前記テー
パ部の圧入方向に略垂直な断面が、略円形状であること
が好ましい。この好ましい構成によれば、前記コンデン
サに開口部を形成する際における前記容器と前記穿孔針
との密閉性をより高めることが可能となり、前記絶縁油
の漏れを効果的に防止することができる。Further, in the perforation needle according to the present invention, it is preferable that a cross section of the tapered portion substantially perpendicular to the press-fitting direction is substantially circular. According to this preferred configuration, it is possible to further enhance the sealing between the container and the perforating needle when forming the opening in the capacitor, and it is possible to effectively prevent the leakage of the insulating oil.
【００１５】さらに、本発明は、上記従来技術の課題を
解決するためになされたもので、容器内に絶縁油を充填
して構成されたコンデンサから前記絶縁油を回収するた
めに用いられる絶縁油回収装置であって、上述した構成
のうちいずれかの穿孔針と、前記穿孔針に連結された負
圧発生手段とを備え、前記穿孔針先端の孔部に連通する
回収経路と前記負圧発生手段とを連結して、前記孔部を
負圧状態に維持しつつ、前記容器内に前記穿孔針が圧入
可能であることを特徴としている。Further, the present invention has been made to solve the above-mentioned problems of the prior art, and an insulating oil used for recovering the insulating oil from a capacitor formed by filling the container with the insulating oil. A recovery device, comprising: a perforation needle of any of the above-described configurations; and a negative pressure generating means connected to the perforation needle, wherein a recovery path communicating with a hole at the tip of the perforation needle and the negative pressure generation It is characterized in that the perforating needle can be press-fitted into the container while the hole is maintained in a negative pressure state by connecting with a means.
【００１６】このように構成された絶縁油回収装置によ
れば、前記負圧発生手段によって前記孔部を適切に負圧
状態に維持しつつ前記容器内に圧入可能であるため、上
述した種々の効果を有する絶縁油回収装置を得ることが
できる。According to the insulating oil recovery device thus configured, the hole can be press-fitted into the container while the hole is appropriately maintained in the negative pressure state by the negative pressure generating means. An insulating oil recovery device having an effect can be obtained.
【００１７】また、本発明は、上記従来技術の課題を解
決するためになされたもので、容器内に絶縁油を充填し
て構成されたコンデンサから前記絶縁油を回収するため
に用いられる絶縁油の回収方法であって、上述した構成
のうちいずれかの穿孔針が用いられ、前記穿孔針にて前
記コンデンサに開口部を設ける工程と、前記穿孔針に設
けられた孔部を介して前記絶縁油を吸引する工程とを備
えたことを特徴としている。Further, the present invention has been made to solve the above-mentioned problems of the prior art, and an insulating oil used for recovering the insulating oil from a capacitor formed by filling an insulating oil in a container. The method for recovering, wherein a perforation needle of any of the above-described configurations is used, and a step of providing an opening in the condenser with the perforation needle, and the step of providing the insulation through a hole provided in the perforation needle And a step of sucking oil.
【００１８】[0018]
【発明の実施の形態】以下、図面に基づき本発明の実施
の形態について説明する。図１は、本発明の実施形態に
かかる絶縁油回収装置の概略図を示したものである。本
実施形態にかかる絶縁油回収装置は、コンデンサＣ内部
に充填されたＰＣＢ（ポリ塩素化ビフェニル）を含有す
る絶縁油（以下、「絶縁油」という。）を回収するため
に用いられる装置であって、図１に示すように、コンデ
ンサＣ内部にその先端部が圧入可能である穿孔針１と、
この穿孔針１の圧入・引出を調整する押圧力調整部２
と、穿孔針１の先端部分に形成された孔部（後述する）
を負圧状態に維持するための負圧発生部３（本発明の
「負圧発生手段」に相当）と、穿孔針１にて吸引・回収
された絶縁油を貯留するための絶縁油貯留槽４等とを用
いて構成されている。以下、各構成要素について具体的
に説明する。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram of an insulating oil recovery device according to an embodiment of the present invention. The insulating oil recovery device according to the present embodiment is a device used for recovering insulating oil (hereinafter, referred to as “insulating oil”) containing PCB (polychlorinated biphenyl) filled inside the capacitor C. Thus, as shown in FIG. 1, a perforated needle 1 whose tip is press-fittable inside a condenser C,
Pressing force adjusting unit 2 for adjusting press-fitting / pulling-out of this perforating needle 1
And a hole (to be described later) formed at the tip of the perforation needle 1
Pressure generating section 3 (corresponding to the "negative pressure generating means" of the present invention) for maintaining the pressure in a negative pressure state, and an insulating oil storage tank for storing the insulating oil sucked and collected by the perforating needle 1. 4 and the like. Hereinafter, each component will be specifically described.
【００１９】図２および図３は、穿孔針１の部分拡大図
を示したものであって、ここで、図３（ａ）は図２のII
I−III線矢視図を示し、図３（ｂ）は図２のIV−IV線断
面図を示している。これらの図に示すように、穿孔針１
は、その先端に先細のテーパ部１１Ａを有する吸引針部
１１を用いて構成されており、このテーパ部１１Ａに
は、二つの孔部１１Ｂ（図３（ａ）等参照）が穿孔され
ている。また、この穿孔針１は、その内部に中空状の回
収経路１２（第一経路１２Ａおよび第二経路１２Ｂ）を
有しており、第一経路１２Ａは、テーパ部１１Ａにて外
部に開口した孔部１１Ｂと、第二経路１２Ｂとを連通さ
せるべく形成され、第二経路１２Ｂは、第一経路１２Ａ
と、絶縁油貯留槽４等を介して負圧発生部３に連通して
いる配管部６（図１参照）とを連通させるべく形成され
ている。さらに、この穿孔針１のテーパ部１１Ａの孔部
１１Ｂを含んだ先端部領域Ｓは、焼き入れ処理による高
硬度化が寿命の面から望ましく、材質としては工具鋼等
の使用が適当である。FIGS. 2 and 3 are partially enlarged views of the perforating needle 1. Here, FIG. 3 (a) is II in FIG.
FIG. 3B is a sectional view taken along the line IV-IV of FIG. 2. As shown in these figures, the puncture needle 1
Is configured using a suction needle 11 having a tapered tapered portion 11A at the tip thereof, and two holes 11B (see FIG. 3 (a) and the like) are perforated in the tapered portion 11A. . The perforation needle 1 has a hollow recovery path 12 (first path 12A and second path 12B) inside thereof, and the first path 12A is a hole opened to the outside at the tapered portion 11A. The second path 12B is formed so as to allow the portion 11B to communicate with the second path 12B.
And a piping section 6 (see FIG. 1) communicating with the negative pressure generating section 3 via the insulating oil storage tank 4 and the like. Further, in the distal end region S including the hole portion 11B of the tapered portion 11A of the perforation needle 1, it is desirable to increase the hardness by quenching from the viewpoint of life, and tool steel or the like is suitable as a material.
【００２０】押圧力調整部２は、油圧ポンプ等を用いて
構成されており、本実施形態においては、この押圧力調
整部２と、穿孔針１を作動させる油圧シリンダ８とが、
油圧循環配管部５を介して接続されている。すなわち、
本実施形態においては、押圧力調整部２の油圧ポンプ等
から油圧シリンダ８に供給される油圧を制御することに
よって、穿孔針１の上下方向（図１の矢印Ｘ方向）の動
きとその押圧力および引抜力とを調整している。The pressing force adjusting section 2 is constituted by using a hydraulic pump or the like. In the present embodiment, the pressing force adjusting section 2 and the hydraulic cylinder 8 for operating the perforating needle 1 are provided.
It is connected via a hydraulic circulation piping section 5. That is,
In the present embodiment, by controlling the hydraulic pressure supplied from the hydraulic pump or the like of the pressing force adjusting unit 2 to the hydraulic cylinder 8, the movement of the perforating needle 1 in the vertical direction (the direction of the arrow X in FIG. 1) and the pressing force thereof And withdrawal force is adjusted.
【００２１】負圧発生部３は、真空ポンプ等を用いて構
成されており、本実施形態においては、この真空ポンプ
等が、配管部６，７および絶縁油貯留槽４を介して穿孔
針１に連結されている。つまり、本実施形態によれば、
この負圧発生部３の真空ポンプ等を駆動させることによ
って、これに連結された穿孔針１の孔部１１Ｂを負圧状
態に維持することが可能となる。The negative pressure generating section 3 is constituted by using a vacuum pump or the like. In the present embodiment, the vacuum pump or the like is connected to the piercing needle 1 through the piping sections 6 and 7 and the insulating oil storage tank 4. It is connected to. That is, according to the present embodiment,
By driving the vacuum pump or the like of the negative pressure generating unit 3, it is possible to maintain the hole 11B of the perforated needle 1 connected thereto at a negative pressure.
【００２２】また、絶縁油貯留槽４は、上述したよう
に、穿孔針１の孔部１１Ｂを負圧状態に維持する際の負
圧発生回路中に設けられているため、基本的に、その内
部は負圧状態に維持されている。Further, as described above, the insulating oil storage tank 4 is provided in the negative pressure generating circuit for maintaining the hole 11B of the puncture needle 1 in a negative pressure state. The inside is maintained in a negative pressure state.
【００２３】次に、以上のように構成された絶縁油回収
装置を用いて行われる絶縁油回収動作について説明す
る。Next, a description will be given of an insulating oil collecting operation performed by using the insulating oil collecting apparatus configured as described above.
【００２４】本実施形態にかかる絶縁油回収装置を用い
てコンデンサＣ内の絶縁油を回収する際には、まずはじ
めに、負圧発生部３を構成する真空ポンプ等を駆動さ
せ、配管部６，７、絶縁油貯留槽４、および穿孔針１の
回収経路１２を介して、穿孔針１の先端部に穿孔された
孔部１１Ｂを負圧・吸引状態とする。When collecting the insulating oil in the capacitor C by using the insulating oil collecting apparatus according to the present embodiment, first, the vacuum pump or the like constituting the negative pressure generating unit 3 is driven, and the piping unit 6, 7, through the insulating oil storage tank 4 and the collection path 12 of the puncture needle 1, the hole 11B pierced at the tip of the puncture needle 1 is brought into a negative pressure / suction state.
【００２５】次いで、押圧力調整部２を構成する油圧ポ
ンプおよび油圧シリンダ８等を駆動させて、穿孔針１を
コンデンサＣに向けて下降させる。そして、穿孔針１の
吸引針部１１がコンデンサＣの容器壁面を貫通して、テ
ーパ部１１Ａに穿孔された孔部１１ＢがコンデンサＣ内
の絶縁油に接する位置まで、穿孔針１をコンデンサＣに
圧入する。Next, the hydraulic pump and the hydraulic cylinder 8 constituting the pressing force adjusting section 2 are driven to lower the perforating needle 1 toward the condenser C. Then, the puncture needle 1 is inserted into the condenser C until the suction needle portion 11 of the puncture needle 1 penetrates the container wall surface of the capacitor C and the hole 11B pierced in the tapered portion 11A comes into contact with the insulating oil in the condenser C. Press in.
【００２６】ここで、「圧入」とは、穿孔針１にその軸
方向（図１の矢印Ｘ方向）のみの押圧力を加えてコンデ
ンサＣの壁面に吸引針部１１を貫通させる場合のみなら
ず、穿孔針１にその軸方向の押圧力と共に、その周方向
における回転力を加えて、コンデンサＣの壁面に吸引針
部１１を貫通させる場合を含むものとする。このように
回転力をも加えながら吸引針部１１をコンデンサＣの壁
面に圧入すれば、比較的小さな押圧力によって、効果的
に壁面に吸引針部１１を貫通させることができる。ただ
し、この周方向における回転力は、その回転力と押圧力
とによって、コンデンサＣの壁面に吸引針部１１を貫通
させた際に、切り粉が生じない程度の力とする。また、
この周方向の回転は、一方向のみに限定されるものでは
なく、一方向と他方向とを交互に繰り返しながら行って
もよい。このように、交互に回転方向を変えながら穿孔
針１の圧入を行えば、切り粉を生ずることなく、比較的
小さな押圧力にてコンデンサＣの壁面を貫通させること
ができる。Here, "press-fitting" means not only the case where a pressing force is applied to the perforated needle 1 only in its axial direction (the direction of the arrow X in FIG. 1) and the suction needle portion 11 penetrates the wall surface of the condenser C. In addition, the case where the suction force is applied to the perforation needle 1 in the circumferential direction together with the pressing force in the axial direction to penetrate the wall surface of the condenser C is included. If the suction needle 11 is pressed into the wall surface of the condenser C while applying a rotational force as described above, the suction needle 11 can be effectively penetrated through the wall surface by a relatively small pressing force. However, the rotational force in the circumferential direction is set to such a degree that cutting powder is not generated when the suction needle portion 11 penetrates the wall surface of the condenser C by the rotational force and the pressing force. Also,
The rotation in the circumferential direction is not limited to only one direction, and may be performed while alternately repeating one direction and the other direction. As described above, if the perforating needle 1 is press-fitted while alternately changing the rotation direction, the wall surface of the capacitor C can be penetrated with a relatively small pressing force without generating chips.
【００２７】図４は、上述したように、吸引針部１１が
コンデンサＣの壁面Ｃ１を貫通して、孔部１１Ｂが絶縁
油Ｑに接する位置まで、穿孔針１が圧入された状態の部
分拡大図を示している。先に説明したように、本実施形
態においては、負圧発生部３等の働きによって孔部１１
Ｂが負圧状態に維持されたまま、穿孔針１は圧入される
ため、図４のごとく絶縁油Ｑ中にテーパ部１１Ａが挿入
されれば、コンデンサＣ内の絶縁油Ｑが、この孔部１１
Ｂを介して回収経路１２側に吸引されることとなる。そ
して、上記孔部１１Ｂから吸引された絶縁油Ｑは、第一
経路１２Ａ、第二経路１２Ｂ、および配管部６を介し
て、絶縁油貯留槽４に搬送されることとなる。FIG. 4 is a partially enlarged view of the state in which the puncture needle 1 is pressed into the position where the suction needle 11 penetrates the wall C1 of the condenser C and the hole 11B contacts the insulating oil Q as described above. FIG. As described above, in the present embodiment, the hole 11 is formed by the action of the negative pressure generating section 3 and the like.
Since the perforating needle 1 is press-fitted while B is maintained in the negative pressure state, if the tapered portion 11A is inserted into the insulating oil Q as shown in FIG. 11
The liquid is sucked toward the collection path 12 via B. The insulating oil Q sucked from the hole 11B is conveyed to the insulating oil storage tank 4 via the first path 12A, the second path 12B, and the pipe 6.
【００２８】また、この図４に示すように、本実施形態
にかかる吸引針部１１を成すテーパ部１１Ａは、穿孔針
１の軸方向（図１の矢印Ｘ方向）におけるその長さＬ
が、コンデンサＣの壁面Ｃ１の厚さｔよりも大きくなる
ように構成されている。そして、穿孔針１をコンデンサ
Ｃに圧入して、テーパ部１１Ａが壁面Ｃ１に接した状態
のときに、孔部１１Ｂが絶縁油Ｑに接する位置となるよ
うに、吸引針部１１の先端に孔部１１Ｂが穿孔されてい
る。さらに、このテーパ部１１Ａの角度θは、適切な貫
通押圧力、溢流防止効果、工具長寿化効果等を得るため
に、２０°〜４５°程度の角度に形成するのが好まし
い。As shown in FIG. 4, the tapered portion 11A forming the suction needle portion 11 according to the present embodiment has a length L in the axial direction of the puncture needle 1 (the direction of arrow X in FIG. 1).
Is configured to be larger than the thickness t of the wall surface C1 of the capacitor C. Then, the perforating needle 1 is press-fitted into the condenser C, and when the tapered portion 11A is in contact with the wall surface C1, a hole is formed at the tip of the suction needle portion 11 so that the hole 11B comes into contact with the insulating oil Q. Portion 11B is perforated. Further, the angle θ of the tapered portion 11A is preferably formed at an angle of about 20 ° to 45 ° in order to obtain an appropriate penetrating pressing force, an overflow prevention effect, a long tool life effect, and the like.
【００２９】本実施形態にかかる絶縁油回収装置は、以
上のように構成され、作動するため、次のような効果を
得ることができる。The insulating oil recovery device according to the present embodiment is configured and operated as described above, so that the following effects can be obtained.
【００３０】上述したように、本実施形態にかかる絶縁
油回収装置においては、穿孔針１をコンデンサＣの壁面
に圧入して、そのテーパ部１１Ａが壁面に位置する状態
で、負圧状態に維持された孔部１１Ｂを介して絶縁油Ｑ
を回収している。このように、本実施形態によれば、テ
ーパ部１１Ａが壁面Ｃ１に位置する状態で絶縁油Ｑの回
収が行われているため（図４参照）、テーパ部１１Ａと
壁面Ｃ１との間に殆ど隙間が生ずることなく、絶縁油Ｑ
の溢流を防止することができる。加えて、本実施形態に
よれば、孔部１１Ｂが負圧状態に維持されたまま圧入さ
れているので、穿孔針１が圧入されると即座に絶縁油Ｑ
の回収が開始される。つまり、本実施形態によれば、先
細のテーパ部１１Ａの壁面Ｃ１への圧入と共に、孔部１
１Ｂを用いた絶縁油Ｑの回収が開始されるため、テーパ
部１１Ａと壁面Ｃ１との間の隙間を最小限に止めつつ回
収を行うことが可能となる。したがって、本実施形態に
かかる絶縁油回収装置によれば、絶縁油Ｑの溢流をなく
し、容器外面およびその周囲を汚染することなくコンデ
ンサＣ中の絶縁油を回収することができる。As described above, in the insulating oil recovery apparatus according to the present embodiment, the perforating needle 1 is pressed into the wall surface of the capacitor C, and is maintained in a negative pressure state with the tapered portion 11A positioned on the wall surface. Insulating oil Q through the hole 11B
Has been collected. As described above, according to the present embodiment, since the insulating oil Q is collected in a state where the tapered portion 11A is located on the wall surface C1 (see FIG. 4), almost all the space between the tapered portion 11A and the wall surface C1. There is no gap, and the insulating oil Q
Can be prevented from overflowing. In addition, according to the present embodiment, since the hole 11B is press-fitted while being maintained in the negative pressure state, the insulating oil Q is immediately inserted when the perforation needle 1 is press-fitted.
Collection is started. That is, according to the present embodiment, the press-fitting of the tapered tapered portion 11A into the wall surface C1 and the hole 1
Since the collection of the insulating oil Q using 1B is started, it is possible to perform the collection while minimizing the gap between the tapered portion 11A and the wall surface C1. Therefore, according to the insulating oil recovery apparatus according to the present embodiment, the overflow of the insulating oil Q can be eliminated, and the insulating oil in the capacitor C can be recovered without contaminating the outer surface of the container and its surroundings.
【００３１】また、本実施形態にかかる絶縁回収装置に
おいては、先述したように、コンデンサＣの壁面Ｃ１に
穿孔針１を圧入して、絶縁油Ｑの回収を行っている。つ
まり、本実施形態によれば、壁面Ｃ１から切り粉を発生
させることなく、絶縁油Ｑの回収を行うことができる。
したがって、本実施形態によれば、切り粉等を混入させ
ずに迅速にコンデンサ中の絶縁油を回収することができ
るので、回収後の化学的処理等の後処理を不純物（切り
粉等）のない状態で適切に実施することが可能となる。In the insulation recovery apparatus according to the present embodiment, as described above, the perforation needle 1 is pressed into the wall surface C1 of the capacitor C to recover the insulation oil Q. That is, according to the present embodiment, the insulating oil Q can be collected without generating chips from the wall surface C1.
Therefore, according to the present embodiment, the insulating oil in the capacitor can be quickly recovered without mixing chips or the like. It is possible to carry out appropriately in the absence state.
【００３２】また、本実施形態においては、上述したよ
うに、吸引針部１１が円形の場合、先端が先細のテーパ
部１１Ａを有する穿孔針１を圧入して絶縁油Ｑの回収を
行い、この際コンデンサＣの壁面Ｃ１には、略円形の開
口部が形成されることとなるため、絶縁油Ｑを抜いた後
の閉栓処理を容易に行うことが可能となる。つまり、絶
縁油Ｑを抜いた後にそのコンデンサＣ（の容器）を一時
的に保管等する場合において、本実施形態によれば、断
面円形の栓（例えば円錐形状の栓）等を用意して、これ
を圧入するだけで、適切に閉栓することができる。Further, in the present embodiment, as described above, when the suction needle portion 11 is circular, the perforated needle 1 having a tapered portion 11A having a tapered tip is press-fitted to recover the insulating oil Q. In this case, since a substantially circular opening is formed in the wall surface C1 of the capacitor C, the plugging process after the insulating oil Q is removed can be easily performed. That is, when the (container) of the capacitor C is temporarily stored after the insulating oil Q is drained, according to the present embodiment, a stopper having a circular cross section (for example, a stopper having a conical shape) or the like is prepared. Just press-fitting can be properly closed.
【００３３】なお、本発明は上記実施形態に限定される
ものではなく、その趣旨を逸脱しない限りにおいて、上
述したもの以外に種々の変更を行うことが可能である。
例えば、貫通針部（の圧入方向に略垂直な断面の形状）
を角形にしてもよい。角形を用いると、圧入に必要な押
圧力を軽減できる。The present invention is not limited to the above embodiment, and various changes other than those described above can be made without departing from the gist of the present invention.
For example, the shape of the penetrating needle (the cross-section substantially perpendicular to the press-fitting direction)
May be square. When a square shape is used, the pressing force required for press fitting can be reduced.
【００３４】例えば、本発明にかかる穿孔針のテーパ部
に形成される孔部は、上述した実施形態の個数、形状等
に限定されるものではない。したがって、例えば、図５
および図６に示すように形成してもよい。また、テーパ
部の中央に孔部を一個だけ設けてもよい。For example, the holes formed in the tapered portion of the perforation needle according to the present invention are not limited to the number, shape, and the like in the above-described embodiments. Thus, for example, FIG.
And may be formed as shown in FIG. Further, only one hole may be provided at the center of the tapered portion.
【００３５】ここで、図５は、穿孔針１のテーパ部に上
記実施形態とは異なる数の孔部１１Ｂを設けた例を示し
ており、上記実施形態における図３（ａ）に相当する図
である。図５（ａ）は３個、図５（ｂ）は４個の孔部１
１Ｂを設けた場合を示している。このように、絶縁油の
吸引を行うための孔部１１Ｂの数を増やせば、吸引を行
う際の圧損を低減させることが可能となる。また、この
ような構成によれば、絶縁油の回収速度の増大につなが
り、溢流が起こりにくくなる。また、剥離塗装片等によ
る管路閉塞対策としても有効である。また、孔数を多く
設ければ、一つくらい孔が閉止しても絶縁油を回収でき
るという効果を得ることができる。FIG. 5 shows an example in which a different number of holes 11B are provided in the tapered portion of the perforating needle 1 than in the above embodiment, and corresponds to FIG. 3 (a) in the above embodiment. It is. 5A shows three holes, and FIG. 5B shows four holes 1.
1B shows a case in which 1B is provided. As described above, if the number of holes 11B for suctioning the insulating oil is increased, it is possible to reduce the pressure loss when suction is performed. Further, according to such a configuration, the recovery speed of the insulating oil is increased, and overflow does not easily occur. It is also effective as a countermeasure against pipe blockage due to stripped paint pieces or the like. Further, if a large number of holes are provided, it is possible to obtain an effect that the insulating oil can be recovered even if only one hole is closed.
【００３６】また、図６は、穿孔針１に上記実施形態と
は異なる形状の孔部を形成した例であって、その穿孔針
１の部分拡大図を示している。図６（ａ）は、上記実施
形態における図２に相当する図であり、図６（ｂ）は、
図６（ａ）のVI−VI線断面図である。この図６において
は、テーパ部１１Ａの軸方向に略直交すべく孔部１１Ｂ
が穿孔されており、これらの孔部１１Ｂがテーパ部１１
Ａ内の一の第一経路１２Ａに連通され、第一経路１２Ａ
と第二経路１２Ｂとが連通されている。このような構成
によれば、図４の孔配置に比して、テーパ部における開
口部の局部的な段差等が軽減されるため、孔開け時のむ
しれ現象が少なくなり、工具の長寿命化や均一な孔形状
の確保が容易になるという効果を得ることができる。な
お、この図６においては、連通された孔部１１Ｂと第一
経路１２Ａとで「逆Ｔ字型」を形成するような構成につ
いて説明したが、本発明はこのような構成に限定される
ものではなく、例えば、連通された孔部１１Ｂと第一経
路１２Ａとで「逆Ｙ字型」を形成するように構成しても
よい。このような「逆Ｙ字型」とすれば、「逆Ｔ字型」
の場合よりも、吸引時の圧損を低減させることができ、
スムーズな流れが得られることにより、絶縁油回収速度
の向上を図ることができる。FIG. 6 shows an example in which a hole having a shape different from that of the above embodiment is formed in the puncture needle 1 and shows a partially enlarged view of the puncture needle 1. FIG. 6A is a diagram corresponding to FIG. 2 in the above embodiment, and FIG.
FIG. 7 is a sectional view taken along line VI-VI of FIG. In FIG. 6, the hole 11B is substantially perpendicular to the axial direction of the tapered portion 11A.
Are drilled, and these holes 11B are tapered.
A is connected to one of the first paths 12A, and the first path 12A
And the second path 12B. According to such a configuration, a local step or the like of the opening in the tapered portion is reduced as compared with the hole arrangement in FIG. Therefore, it is possible to obtain an effect that it is easy to obtain a uniform hole shape. In FIG. 6, a configuration in which the communicating hole portion 11B and the first path 12A form an “inverted T-shape” has been described, but the present invention is limited to such a configuration. Instead, for example, a configuration may be made in which the communicating hole 11B and the first path 12A form an “inverted Y-shape”. If such an "inverted Y-shape" is used, an "inverted T-shape"
Can reduce the pressure loss at the time of suction,
By obtaining a smooth flow, the insulating oil recovery speed can be improved.
【００３７】また、本実施形態においては、穿孔針１の
軸方向長さ等については特に説明しなかったが、本発明
はいずれかの長さに限定されるものではなく、コンデン
サＣの大きさ等の必要に応じて定めることが可能であ
る。例えば、吸引針部をコンデンサの圧入側壁から反対
側壁に届くようにしてもよい。そうすれば、一回の圧入
作業で段取り替えを行わなくても全ての絶縁油を回収す
ることが可能となる。In this embodiment, the axial length and the like of the perforated needle 1 are not particularly described. However, the present invention is not limited to any length, and the size of the capacitor C is not limited. Etc. can be determined as necessary. For example, the suction needle section may reach from the press-fit side wall of the condenser to the opposite side wall. Then, it is possible to collect all the insulating oil without performing the setup change in one press-fitting operation.
【００３８】また、本実施形態にかかる絶縁油回収装置
においては、コンデンサＣの上方の壁面に穿孔針１を下
降させて圧入する場合について説明したが、本発明はこ
の構成に限定されるものではない。つまり、本実施形態
にかかる穿孔針１は、テーパ部１１ＡをコンデンサＣの
壁面に位置する状態（図４参照）にて、絶縁油を容器外
に漏らすことなく回収可能であるため、必要に応じて、
穿孔針１を側方移動あるいは上昇させて、コンデンサＣ
の側方壁面あるいは下方壁面に圧入すべく絶縁油回収装
置を構成してもよい。Further, in the insulating oil recovery apparatus according to the present embodiment, the case where the perforating needle 1 is lowered and pressed into the wall surface above the condenser C has been described, but the present invention is not limited to this configuration. Absent. That is, the perforating needle 1 according to the present embodiment can collect the insulating oil without leaking out of the container in a state where the tapered portion 11A is located on the wall surface of the capacitor C (see FIG. 4). hand,
The perforating needle 1 is moved sideways or raised to
An insulating oil recovery device may be configured to be press-fit into the side wall surface or the lower wall surface.
【００３９】[0039]
【発明の効果】以上のように、本発明によれば、容器外
面およびその周囲を汚染することなく、切り粉等を混入
させずに迅速にコンデンサ中の絶縁油を回収することが
できる穿孔針、およびこれを用いた絶縁油回収装置、な
らびに絶縁油回収方法を得ることが可能となる。As described above, according to the present invention, the perforated needle which can quickly collect the insulating oil in the capacitor without contaminating the outer surface of the container and its surroundings and without mixing chips or the like. , And an insulating oil recovery apparatus and an insulating oil recovery method using the same.
【図１】本発明の実施形態にかかる絶縁油回収装置の概
略図である。FIG. 1 is a schematic diagram of an insulating oil recovery device according to an embodiment of the present invention.
【図２】図１の絶縁油回収装置を構成する穿孔針の部分
拡大図である。FIG. 2 is a partially enlarged view of a perforation needle constituting the insulating oil recovery device of FIG.
【図３】図１の絶縁油回収装置を構成する穿孔針の部分
拡大図であって、図３（ａ）は図２のIII−III線矢視
図、図３（ｂ）は図２のIV−IV線断面図である。3 is a partially enlarged view of a perforating needle constituting the insulating oil recovery device of FIG. 1, wherein FIG. 3 (a) is a view taken along the line III-III of FIG. 2, and FIG. 3 (b) is a view of FIG. FIG. 4 is a sectional view taken along line IV-IV.
【図４】本実施形態にかかる穿孔針をコンデンサ壁面に
圧入した状態を示した部分拡大図である。FIG. 4 is a partially enlarged view showing a state where the perforating needle according to the present embodiment is pressed into a condenser wall surface.
【図５】他の実施形態にかかる穿孔針の図３（ａ）に相
当する図であって、図５（ａ）が３個の孔部を形成した
例であり、図５（ｂ）が４個の孔部を形成した例であ
る。5 (a) is a view corresponding to FIG. 3 (a) of a perforation needle according to another embodiment, FIG. 5 (a) is an example in which three holes are formed, and FIG. 5 (b) is This is an example in which four holes are formed.
【図６】他の実施形態にかかる穿孔針の部分拡大図であ
って、図６（ａ）は、上記実施形態における図２に相当
する図であり、図６（ｂ）は、図６（ａ）のVI−VI線断
面図である。FIG. 6 is a partially enlarged view of a perforation needle according to another embodiment, in which FIG. 6A is a view corresponding to FIG. 2 in the above embodiment, and FIG. 6B is a view corresponding to FIG. FIG. 6A is a sectional view taken along line VI-VI of FIG.
１…穿孔針 ２…押圧力調整部 ３…負圧発生部（負圧発生手段） ４…絶縁油貯留槽 ５…油圧循環配管部 ６，７…配管部 ８…油圧シリンダ １１…吸引針部 １１Ａ…テーパ部 １１Ｂ…孔部 １２…回収経路 １２Ａ…第一経路 １２Ｂ…第二経路 DESCRIPTION OF SYMBOLS 1 ... Perforation needle 2 ... Pressing force adjustment part 3 ... Negative pressure generation part (negative pressure generation means) 4 ... Insulating oil storage tank 5 ... Hydraulic circulation piping part 6, 7 ... Piping part 8 ... Hydraulic cylinder 11 ... Suction needle part 11A ... taper portion 11B ... hole portion 12 ... collection path 12A ... first path 12B ... second path
───────────────────────────────────────────────────── フロントページの続き (72)発明者 柳原 誠 兵庫県神戸市東灘区甲南町２丁目３ 20 −403 (72)発明者 小西 嘉雄 兵庫県伊丹市安堂寺町３丁目18 (56)参考文献 特開 平４−118711（ＪＰ，Ａ) 特開 平10−289824（ＪＰ，Ａ) 米国特許5704383（ＵＳ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B09B 5/00 H01F 41/00 H01G 13/00 331 H01G 2/02 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Makoto Yanagihara 2-320 Konan-cho, Higashinada-ku, Kobe-shi, Hyogo Pref. JP-A-4-118711 (JP, A) JP-A-10-289824 (JP, A) U.S. Pat. No. 5,704,383 (US, A) (58) Fields investigated (Int. Cl. 7 , DB name) B09B 5/00 H01F 41/00 H01G 13/00 331 H01G 2/02
Claims (7)
ンデンサから前記絶縁油を回収するために用いられる穿
孔針であって、 先端に先細のテーパ部を有し、前記絶縁油を回収するた
めの回収経路に連通された孔部が前記テーパ部に設けら
れており、 前記孔部を負圧状態に維持しつつ、前記容器内に圧入可
能であることを特徴とする穿孔針。1. A perforated needle used for collecting the insulating oil from a capacitor formed by filling a container with the insulating oil, the tip having a tapered tapered portion at the tip, and collecting the insulating oil. A hole communicated with a collecting path for performing the operation, wherein the hole is provided in the tapered portion, and the hole can be pressed into the container while maintaining the hole in a negative pressure state.
のみで、前記容器内に圧入される請求項１に記載の穿孔
針。2. The perforated needle according to claim 1, wherein the needle is pressed into the container only by a pressing force in a direction substantially perpendicular to a wall surface of the container.
が、前記容器の壁面厚さよりも長い請求項１または２に
記載の穿孔針。3. The perforating needle according to claim 1, wherein the length of the tapered portion in the press-fit direction is longer than the wall thickness of the container.
る状態において、前記孔部が前記絶縁油に接触可能であ
る請求項３に記載の穿孔針。4. The perforating needle according to claim 3, wherein the hole can contact the insulating oil in a state where the tapered portion is located on a wall surface of the container.
が、略円形状である請求項１から４のいずれか１項に記
載の穿孔針。5. The perforation needle according to claim 1, wherein a cross section of the tapered portion substantially perpendicular to the press-fitting direction is substantially circular.
ンデンサから前記絶縁油を回収するために用いられる絶
縁油回収装置であって、 請求項１から５のいずれか１項に記載の穿孔針と、前記
穿孔針に連結された負圧発生手段とを備え、 前記穿孔針先端の孔部に連通する回収経路と前記負圧発
生手段とを連結して、前記孔部を負圧状態に維持しつ
つ、前記容器内に前記穿孔針が圧入可能であることを特
徴とする絶縁油回収装置。6. An insulating oil recovery device used for recovering the insulating oil from a capacitor configured by filling the container with the insulating oil, wherein the insulating oil recovery device according to any one of claims 1 to 5. A perforation needle; and a negative pressure generating means connected to the perforation needle. The collection path communicating with the hole at the tip of the perforation needle is connected to the negative pressure generating means, and the hole is in a negative pressure state. The perforated needle can be press-fitted into the container while maintaining the pressure in the container.
ンデンサから前記絶縁油を回収するために用いられる絶
縁油の回収方法であって、 請求項１から５いずれか１項に記載の穿孔針が用いら
れ、 前記穿孔針にて前記コンデンサに開口部を設ける工程
と、前記穿孔針に設けられた孔部を介して前記絶縁油を
吸引する工程とを備えたことを特徴とする絶縁油回収方
法。7. A method for recovering insulating oil used for recovering the insulating oil from a capacitor configured by filling a container with the insulating oil, wherein the method comprises the steps of: A perforation needle is used, comprising: a step of providing an opening in the capacitor with the perforation needle; and a step of sucking the insulating oil through a hole provided in the perforation needle. Oil recovery method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001157189A JP3247362B1 (en) | 2001-05-25 | 2001-05-25 | Perforated needle, insulating oil recovery device using the same, and insulating oil recovery method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001157189A JP3247362B1 (en) | 2001-05-25 | 2001-05-25 | Perforated needle, insulating oil recovery device using the same, and insulating oil recovery method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP3247362B1 true JP3247362B1 (en) | 2002-01-15 |
| JP2002346538A JP2002346538A (en) | 2002-12-03 |
Family
ID=19001085
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001157189A Expired - Lifetime JP3247362B1 (en) | 2001-05-25 | 2001-05-25 | Perforated needle, insulating oil recovery device using the same, and insulating oil recovery method |
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| Country | Link |
|---|---|
| JP (1) | JP3247362B1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3900335B2 (en) * | 2001-10-29 | 2007-04-04 | 東芝プラントシステム株式会社 | Hazardous material treatment equipment |
| KR102606585B1 (en) * | 2020-09-10 | 2023-11-29 | 주식회사 보틀리스 | Storage container and its liquid injection method |
| WO2022055064A1 (en) * | 2020-09-10 | 2022-03-17 | 주식회사 보틀리스 | Storage container and method for injecting liquid thereinto |
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2001
- 2001-05-25 JP JP2001157189A patent/JP3247362B1/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| JP2002346538A (en) | 2002-12-03 |
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