JPH0521224Y2 - - Google Patents
Info
- Publication number
- JPH0521224Y2 JPH0521224Y2 JP3435186U JP3435186U JPH0521224Y2 JP H0521224 Y2 JPH0521224 Y2 JP H0521224Y2 JP 3435186 U JP3435186 U JP 3435186U JP 3435186 U JP3435186 U JP 3435186U JP H0521224 Y2 JPH0521224 Y2 JP H0521224Y2
- Authority
- JP
- Japan
- Prior art keywords
- insulating fluid
- container
- seal case
- operating shaft
- packing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000012530 fluid Substances 0.000 claims description 32
- 238000012856 packing Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
Landscapes
- Sealing Devices (AREA)
- Switch Cases, Indication, And Locking (AREA)
Description
【考案の詳細な説明】
Ａ 産業上の利用分野
本考案は絶縁流体と共に電気機器が収納された
密閉容器における軸貫通部のシール構造に関す
る。[Detailed Description of the Invention] A. Field of Industrial Application The present invention relates to a sealing structure for a shaft penetrating portion in a closed container in which electrical equipment is housed together with an insulating fluid.
Ｂ 考案の概要
本考案は絶縁流体と共に電気機器を収納した密
閉容器の側壁にシールケースを固着し、シールケ
ースを操作軸が気密に貫通しているシール部の構
造において、
シールケース内周に突部を設けることによつて
仕切形成された各空隙部にパツキンを配設したこ
とにより、
密閉容器内の絶縁流体を抜かないで気中側のパ
ツキンの交換作業が行なえるようにしたものであ
る。B. Summary of the invention This invention has a structure in which a seal case is fixed to the side wall of an airtight container containing electrical equipment and insulating fluid, and an operating shaft passes through the seal case in an airtight manner. By placing a gasket in each gap that is partitioned by providing a section, it is possible to replace the gasket on the air side without draining the insulating fluid inside the sealed container. .
Ｃ 従来の技術
縮小形開閉装置は、SF6ガス等の絶縁流体が封
入された密閉容器内に電気機器を収納したもので
ある。このような縮小形開閉装置にあつては、密
閉容器に収納した電気機器を容器外に設けた操作
機構によつて操作するようになつている。このた
め電気機器と操作機構部を機械的に連結する軸が
密閉容器の側壁を貫通させる必要がある。このと
き側壁の軸貫通部には密閉容器内の絶縁流体の漏
出を防止するシール機構が必要となる。C. Prior Art A reduced-sized switchgear is one in which electrical equipment is housed in a closed container filled with an insulating fluid such as SF 6 gas. In such a reduced type opening/closing device, electrical equipment housed in a closed container is operated by an operating mechanism provided outside the container. For this reason, it is necessary for the shaft that mechanically connects the electrical equipment and the operating mechanism section to pass through the side wall of the closed container. At this time, the shaft penetrating portion of the side wall requires a sealing mechanism to prevent leakage of the insulating fluid within the closed container.
従来のシール機構は一般に第３図に示すような
構成とされている。同図において１は接地された
密閉容器の側壁で、２はSF6ガス等の絶縁流体が
封入されている容器内部、３は大気側である。５
は筒状のシールケースで、容器側壁１に形成した
開口ｂに挿入してあるとともに、シールケース外
周から突出した鍔部５ａをＯリング７を介して容
器側壁１の外側に気密に当てがいねじ８を用いて
固着している。４は操作軸であり、該操作軸４は
シールケース５を回転自在に挿通しているととも
に、シールケース５の内周と操作軸４の空隙部に
シール用のパツキン９が複数個配設されている。
パツキン９の両側に環状のパツキン受け１３，１
３が設けてあり、その両側にベアリング１０，１
０が設けてあつて操作軸４を回転自在に支持して
いる。操作軸４の両端は密閉容器の内側と外側に
位置しており、その内端には絶縁流体中の断路器
等を操作するレバー１１が設けられており、外端
には操作機構側に連結されるレバー１２が設けら
れている。 A conventional sealing mechanism generally has a configuration as shown in FIG. In the figure, 1 is the side wall of a grounded closed container, 2 is the inside of the container filled with an insulating fluid such as SF 6 gas, and 3 is the atmosphere side. 5
is a cylindrical seal case, which is inserted into an opening b formed in the container side wall 1, and a flange 5a protruding from the outer periphery of the seal case is airtightly applied to the outside of the container side wall 1 via an O-ring 7. It is fixed using 8. Reference numeral 4 denotes an operating shaft, and the operating shaft 4 is rotatably inserted through the seal case 5, and a plurality of sealing gaskets 9 are arranged in the inner periphery of the seal case 5 and the gap between the operating shaft 4. ing.
Annular packing receivers 13 and 1 are provided on both sides of the packing 9.
3 is provided, and bearings 10 and 1 are provided on both sides.
0 is provided to rotatably support the operating shaft 4. Both ends of the operating shaft 4 are located on the inside and outside of the sealed container, and the inner end is provided with a lever 11 for operating a disconnector etc. in the insulating fluid, and the outer end is connected to the operating mechanism side. A lever 12 is provided.
ところで、前記シールケース５と操作軸４の間
の気密性を保持するために設けられるパツキン９
は、経年劣化又は使用による摩耗等により交換を
必要とする。この場合一般には容器側壁の大気側
での作業がやり易いので、大気側３のベアリング
１０とベアリング押え１３を取外したうえ、パツ
キン９を外方に取出して新しいものと交換する。 By the way, a gasket 9 is provided to maintain airtightness between the seal case 5 and the operating shaft 4.
requires replacement due to deterioration over time or wear due to use. In this case, since it is generally easier to work on the atmosphere side of the side wall of the container, the bearing 10 and bearing holder 13 on the atmosphere side 3 are removed, and the gasket 9 is taken out and replaced with a new one.
Ｄ 考案が解決しようとする問題点
パツキン９の交換作業は比較的短時間で行なわ
れるが、それでも、通常絶縁流体側は、大気側よ
り数倍は圧力が高いため、パツキン９をすべて取
出したとき、密閉容器内の絶縁流体が操作軸４の
周囲の隙間を通つて漏出し、また、パツキン９の
一部を残しても絶縁流体側の圧力で大気側に移動
し、漏出は防げないという問題がある。このた
め、従来はパツキン９の取替えに際しては密閉容
器内の絶縁流体を一旦抜き取り、パツキン交換後
再び絶縁流体を密閉容器内に封入している。しか
し、このような絶縁流体の抜取りと封入作業には
真空ポンプや絶縁流体の貯溜タンクが必要である
だけでなく、その作業は面倒であり手間がかかる
という問題点があつた。D Problems that the invention aims to solve Replacing the gasket 9 can be done in a relatively short time, but even so, the pressure on the insulating fluid side is usually several times higher than on the atmospheric side, so when all the gaskets 9 are removed. The problem is that the insulating fluid in the sealed container leaks through the gap around the operating shaft 4, and even if a part of the packing 9 is left, the pressure on the insulating fluid side causes it to move toward the atmosphere, and leakage cannot be prevented. There is. For this reason, conventionally, when replacing the gasket 9, the insulating fluid in the sealed container is once drained out, and after the gasket is replaced, the insulating fluid is sealed in the container again. However, such extraction and filling of the insulating fluid not only requires a vacuum pump and a storage tank for the insulating fluid, but also has the problem of being troublesome and time-consuming.
本考案はこのような問題点を解決したものであ
る。 The present invention solves these problems.
Ｅ 問題点を解決するための手段
本考案は電気機器を絶縁流体が充填された密閉
容器内に収納し、その容器の壁を密封貫通させて
シールケースを設け、このシールケース内に操作
軸を挿入し電気機器を大気側から操作可能にした
シール構造において、前記シールケースの内周面
に周方向に突条部を設けて操作軸を挿通し、突条
部と軸とでパツキン収納用の空隙部を絶縁流体側
と大気側とに仕切つて形成し、各空隙部にパツキ
ンを配設したことを特徴とする。E Means for Solving Problems The present invention stores electrical equipment in a sealed container filled with insulating fluid, seals the wall of the container through the wall of the container, provides a sealed case, and installs an operating shaft inside this sealed case. In a seal structure in which an electric device can be operated from the atmosphere side by inserting the seal case, a protrusion is provided in the circumferential direction on the inner peripheral surface of the seal case, an operating shaft is inserted through the seal case, and the protrusion and the shaft form a seal for storing a gasket. It is characterized in that the cavity is partitioned into an insulating fluid side and an atmosphere side, and a packing is provided in each cavity.
Ｆ 作用
パツキンの交換に際しては、突部より大気側の
レバーとベアリングとベアリング受けを取外した
うえ、パツキンを取替える。この取替作業の際、
突部より絶縁流体側の パツキンによりシールケ
ースと操作軸間の隙間は密閉されているので容器
内の絶縁流体が軸シール部から漏出するようなこ
とがない。F Effect When replacing the gasket, remove the lever, bearing, and bearing receiver on the atmospheric side from the protrusion, and then replace the gasket. During this replacement work,
Since the gap between the seal case and the operating shaft is sealed by the gasket on the insulating fluid side of the protrusion, the insulating fluid in the container will not leak from the shaft seal.
Ｇ 実施例
以下本考案を第１図、第２図に示す実施例にも
とづいて説明する。なお、従来と同一部分には同
一符号を付して重複説明を省略する。G. Embodiment The present invention will be explained below based on the embodiment shown in FIGS. 1 and 2. It should be noted that the same parts as those in the prior art are given the same reference numerals, and redundant explanation will be omitted.
本考案においては、シールケース５の内周面に
円周方向に突条部５ｂを設けて、該突条部５ｂに
よつてその内周に挿通する操作軸４とシールケー
ス５の内周面との間にパツキン収納用の空隙部１
４ａ，１４ｂを仕切り形成し、各空隙部１４ａ，
１４ｂにそれぞれパツキン９ａ，９ｂを配設して
いる。 In the present invention, a protrusion 5b is provided on the inner peripheral surface of the seal case 5 in the circumferential direction, and the operating shaft 4 and the inner circumferential surface of the seal case 5 are inserted through the inner circumference by the protrusion 5b. There is a gap 1 for storing the packing between
4a, 14b are partitioned, and each cavity 14a,
Gaskets 9a and 9b are respectively disposed on 14b.
前記シール構造において空隙部１４ａのパツキ
ン９ａを経年変化又は摩耗等により取替える必要
が生じたときは、第２図に示すように大気側のレ
バー１２、ベアリング１０、パツキン受け１３を
外し、突条部５ｂより大気側に位置する空隙部１
４ａ内のパツキン９ａを大気側に取外して新しい
パツキンと取替え作業を行なう。その場合突条部
５ｂより絶縁流体側にはパツキン９ｂが存在して
いるので、大気側のパツキン９ａを取外しても絶
縁流体側のパツキン９ｂは、突条部５ｂにより移
動が阻止されているので、密閉容器内の絶縁流体
が操作軸４とシールケース５の隙間から漏出する
ことがない。 When it becomes necessary to replace the gasket 9a of the cavity 14a in the seal structure due to aging or wear, remove the lever 12, bearing 10, and gasket receiver 13 on the atmospheric side as shown in FIG. Gap 1 located closer to the atmosphere than 5b
Remove the gasket 9a inside 4a to the atmosphere side and replace it with a new gasket. In that case, since the packing 9b exists on the insulating fluid side of the protrusion 5b, even if the gasket 9a on the atmosphere side is removed, the packing 9b on the insulating fluid side is prevented from moving by the protrusion 5b. The insulating fluid in the sealed container will not leak out from the gap between the operating shaft 4 and the seal case 5.
パツキン９ｂは上記のように専らパツキン取替
作業中の絶縁流体の一時的な漏出を防止するため
に設けられるものであり、通常時は大気側に位置
するパツキン９ａによつてシール部の絶縁流体漏
出防止の作用が奏される。したがつて、突条部５
ｂよりも大気側のパツキン９ａは複数個設けるも
のであるが、絶縁流体側のパツキン９ｂは少くと
も１個あれば足りる。なお、絶縁流体側のパツキ
ン９ｂの交換はできないため同じパツキンが長期
間使用されるが大気側のパツキン９ａの交換に要
する時間は非常に短いから、例え絶縁流体の漏れ
が生じても、その量は機器の絶縁耐力に影響を与
えることは全くない。また、実施例では操作軸４
が回転軸である場合のシール構造について説明し
たが、これに限らず軸方向に移動自在に設けられ
る軸の摺動シール構造についても本考案を実施す
ることができる。 As mentioned above, the packing 9b is provided exclusively to prevent temporary leakage of the insulating fluid during the packing replacement work, and under normal conditions, the packing 9a located on the atmosphere side prevents the insulating fluid from sealing. The effect of preventing leakage is exerted. Therefore, the protruding portion 5
Although a plurality of gaskets 9a on the atmosphere side of b are provided, at least one gasket 9b on the insulating fluid side is sufficient. Note that the gasket 9b on the insulating fluid side cannot be replaced, so the same gasket is used for a long period of time, but the time required to replace the gasket 9a on the atmospheric side is very short, so even if insulation fluid leaks, the amount has no effect on the dielectric strength of the equipment. In addition, in the embodiment, the operating shaft 4
Although the seal structure in the case where the shaft is a rotating shaft has been described, the present invention is not limited to this, and the present invention can be applied to a sliding seal structure for a shaft that is provided so as to be freely movable in the axial direction.
Ｈ 考案の効果
本考案のシール構造によると次の効果がある。
密閉容器内の絶縁流体を抜かないで操作軸シー
ル部のパツキンを交換でき、パツキンの取替作業
を容易迅速に行なうことができる。パツキン交
換時、絶縁流体を抜かないので、真空ポンプや絶
縁流体を一旦溜めるタンク等の設備を準備する必
要がない。絶縁流体を抜かないことと短時間で
作業が可能であることにより、系統を停電させる
ことなくパツキン交換作業を行うことができる。H. Effects of the invention The seal structure of the invention has the following effects.
The packing of the operating shaft seal portion can be replaced without draining the insulating fluid in the closed container, and the packing can be replaced easily and quickly. Since the insulating fluid is not drained when replacing the packing, there is no need to prepare equipment such as a vacuum pump or a tank to temporarily store the insulating fluid. Since the insulating fluid is not drained and the work can be done in a short time, the packing can be replaced without causing a power outage to the system.
第１図と第２図は本考案の軸シール構造を示す
断面図、第３図は従来の軸シール構造を示す断面
図である。
１……容器側壁、２……容器内部、３……大気
側、４……操作軸、５……シールケース、５ａ…
…鍔部、５ｂ……突条部、９ａ，９ｂ……パツキ
ン、１４ａ，１４ｂ……空隙部。
1 and 2 are cross-sectional views showing the shaft seal structure of the present invention, and FIG. 3 is a cross-sectional view showing a conventional shaft seal structure. 1: container side wall, 2: container interior, 3: atmosphere side, 4: operating shaft, 5: seal case, 5a:
... flange portion, 5b... protrusion portion, 9a, 9b... gaskets, 14a, 14b... gap portion.
Claims (1)
収容し、その容器の壁を密封貫通させてシールケ
ースを設け、このシールケース内に操作軸を挿入
し電気機器を大気側から操作可能にしたシール構
造において、 前記シールケースの内周面に周方向に突条部を
設けて操作軸を挿通し、突条部で操作軸とシール
ケースの内周面との間にパツキン収納用の空隙部
を絶縁流体側と大気側とに仕切つて形成し、各空
隙部にパツキンを配設したことを特徴とする密閉
容器における軸貫通部のシール構造。[Scope of Claim for Utility Model Registration] Electrical equipment is housed in a sealed container filled with insulating fluid, the wall of the container is hermetically penetrated to provide a seal case, and an operating shaft is inserted into this seal case. In a seal structure that can be operated from the atmosphere side, a protrusion is provided in the circumferential direction on the inner circumferential surface of the seal case, the operating shaft is inserted therethrough, and the protruding strip connects the operating shaft with the inner circumferential surface of the seal case. 1. A sealing structure for a shaft penetrating part in an airtight container, characterized in that a gap for storing a packing is formed between the insulating fluid side and an atmosphere side, and a packing is disposed in each gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3435186U JPH0521224Y2 (en) | 1986-03-10 | 1986-03-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3435186U JPH0521224Y2 (en) | 1986-03-10 | 1986-03-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62147219U JPS62147219U (en) | 1987-09-17 |
| JPH0521224Y2 true JPH0521224Y2 (en) | 1993-05-31 |
Family
ID=30842816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3435186U Expired - Lifetime JPH0521224Y2 (en) | 1986-03-10 | 1986-03-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0521224Y2 (en) |
-
1986
- 1986-03-10 JP JP3435186U patent/JPH0521224Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62147219U (en) | 1987-09-17 |
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