JPH076588Y2 - Pressure release structure in gas switch - Google Patents
Pressure release structure in gas switchInfo
- Publication number
- JPH076588Y2 JPH076588Y2 JP1988069669U JP6966988U JPH076588Y2 JP H076588 Y2 JPH076588 Y2 JP H076588Y2 JP 1988069669 U JP1988069669 U JP 1988069669U JP 6966988 U JP6966988 U JP 6966988U JP H076588 Y2 JPH076588 Y2 JP H076588Y2
- Authority
- JP
- Japan
- Prior art keywords
- pressure release
- case
- opening
- release port
- pressure
- 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
- 238000005192 partition Methods 0.000 claims description 15
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 description 15
- 239000002184 metal Substances 0.000 description 15
- 239000004020 conductor Substances 0.000 description 13
- 229910052573 porcelain Inorganic materials 0.000 description 9
- 230000002093 peripheral effect Effects 0.000 description 8
- 239000003463 adsorbent Substances 0.000 description 7
- 238000012856 packing Methods 0.000 description 7
- 229910018503 SF6 Inorganic materials 0.000 description 5
- 230000005684 electric field Effects 0.000 description 5
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 239000012212 insulator Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 3
- POIUWJQBRNEFGX-XAMSXPGMSA-N cathelicidin Chemical compound C([C@@H](C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H]([C@@H](C)CC)C(=O)NCC(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](C(C)C)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CO)C(O)=O)NC(=O)[C@H](CC=1C=CC=CC=1)NC(=O)[C@H](CC(O)=O)NC(=O)CNC(=O)[C@H](CC(C)C)NC(=O)[C@@H](N)CC(C)C)C1=CC=CC=C1 POIUWJQBRNEFGX-XAMSXPGMSA-N 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 241000722921 Tulipa gesneriana Species 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910000833 kovar Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Gas-Insulated Switchgears (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は高圧配電線路の区分用あるいは分岐用として使
用するガス開閉器に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a gas switch used for dividing or branching a high-voltage power distribution line.
柱上用ガス開閉器は、一般には気密状態に保持した金属
製のケース内に開閉部を収納すると共にそのケース内に
消弧性と絶縁耐力とに優れたSF6（六フッ化硫黄）ガス
を充填した構造からなる。A gas switch for poles generally contains a switch case in a metal case that is kept airtight, and SF6 (sulfur hexafluoride) gas, which has excellent arc extinguishing properties and dielectric strength, is housed in the case. It consists of a filled structure.
その結果、ガス開閉器は気中絶縁方式のものに比して絶
縁距離が短くでき、そのためにケースを小形にできる利
点を有している。As a result, the gas switch has an advantage that the insulation distance can be made shorter than that of the air insulation type, and therefore the case can be made compact.
しかしながらその反面、雷サージ等の異常電圧によって
万が一ケース内で短絡事故が起こりアークが発生した場
合には、ケースの内容積が小さくなっている分だけ、一
段と急速にケースの内圧が高められるため、ケース上
面、下面あるいは側面のいずれかに設けた放圧部がそれ
に追従できず、所定通りに放圧せず、放圧部以外でケー
スが大きく破損してその破片を落下させたり、ケース内
やケースの取付部材を飛散させたりする危険を持ってい
た。However, on the other hand, if a short circuit accident occurs in the case due to an abnormal voltage such as lightning surge and an arc occurs, the internal pressure of the case will be increased more rapidly because the internal volume of the case is smaller. The pressure relief part provided on either the top, bottom, or side of the case cannot follow it, and does not release the pressure as specified. There was a risk of scattering the mounting members of the case.
本考案は上記に鑑み、気密保持した状態のケースを仕切
板によって大略上下２つの室に区画し、その一方の室に
は開閉部（10）を収納すると共にSF6ガスを充填し、ま
た他方の室には上記開閉部を開閉動作させる動力機構部
（57）を収納したガス開閉器において、上記仕切板がケ
ース（２）の上下を区画する単一のもので、前記仕切板
（８）に設けた放圧用開口穴（8b）の下面に固着した平
面山形でＶ状断面の切溝（9a）の内側に固着したバチ状
の放圧口形成板（９）、該形成板の切溝（9a）を形成し
た放圧口形成具（65）、前記上部室に収納した開閉器部
（10）と前記放圧口形成具（65）とを連結する連結板
（67）とからなる強制的な放圧装置を設け、且つ前記放
圧口を前記動力機構部（57）の真上に位置させたことを
特徴とするものである。In view of the above, the present invention divides a case in a hermetically sealed state into two chambers, a generally upper and lower chamber, with one chamber containing an opening / closing section (10) and being filled with SF6 gas, and the other chamber. In the gas switch housed in the chamber, a power mechanism unit (57) for opening and closing the opening and closing unit, the partition plate is a single one that divides the upper and lower sides of the case (2) into the partition plate (8). A pressure release port forming plate (9) in a dovetail shape fixed to the inside of the cut groove (9a) having a V-shaped cross section and fixed to the lower surface of the pressure release opening hole (8b) provided, and a cut groove of the forming plate (9). 9a) forming a pressure release port forming tool (65), a switch plate (10) housed in the upper chamber and a connecting plate (67) for connecting the pressure release port forming tool (65) A pressure release device is provided, and the pressure release port is located directly above the power mechanism section (57).
以下、本考案の実施例を図面に基づいて説明する。１は
本考案を具現化した柱上用ガス開閉器を示す。２は耐候
性に優れたステンレス等の金属よりなる縦長長方形のケ
ースであり、同ケースの上、下の開口部2a,2bには上蓋
３と底蓋４とがそれぞれ気密的に取付けられるもので、
その内の上蓋３はTIG溶接によってケースに一体的に接
合され、また底蓋４はバッキン５を介してボルト６・ナ
ット７により取外し可能に取り付けられている。８はケ
ース２内を上下２つに区画する仕切板で、ケース２と同
じ材質のステンレスで形成されていると共に、ケース２
の厚みに比して若干厚めに形成され、その外周部8aがケ
ースの内周面2cに対しTIG溶接によって固設されてい
る。仕切板８のほぼ中央には四角形の放圧用開口穴8bが
第６図に示すように形成されており、同穴8bの下面は、
仕切板８に比して薄めのステンレス製の放圧口形成板９
によって、その周縁部を仕切板８の下面にTIG溶接して
塞がれている。このような仕切板８と放圧口形成板９に
よって、ケース２内がその略中央の位置において上下２
つに区画されかつ各々が気密保持された状態になってい
る。10は上部の開閉部であり、両側面2d,2eには相対し
てブッシング11,12が貫装され、さらにケース２内には
パッフア装置13と、放圧部14と、動力伝達部15とが収納
されている。Embodiments of the present invention will be described below with reference to the drawings. 1 shows a gas switch for a pole which embodies the present invention. Reference numeral 2 is a vertically long rectangular case made of metal such as stainless steel having excellent weather resistance. The upper lid 3 and the bottom lid 4 are hermetically attached to the upper and lower openings 2a and 2b of the case, respectively. ,
The upper lid 3 among them is integrally joined to the case by TIG welding, and the bottom lid 4 is detachably attached with a bolt 6 and a nut 7 via a backing 5. Reference numeral 8 is a partition plate that divides the case 2 into upper and lower parts, which is made of stainless steel of the same material as the case 2 and
The outer peripheral portion 8a is fixed to the inner peripheral surface 2c of the case by TIG welding. A quadrangular pressure release opening 8b is formed substantially in the center of the partition plate 8 as shown in FIG. 6, and the lower surface of the opening 8b is
Pressure release port forming plate 9 made of stainless steel, which is thinner than the partition plate 8
Thus, the peripheral portion is closed by TIG welding to the lower surface of the partition plate 8. Due to the partition plate 8 and the pressure release port forming plate 9 as described above, the inside of the case 2 is vertically moved at a substantially central position.
It is divided into two parts and each is kept airtight. Reference numeral 10 denotes an opening / closing part at the upper part, and bushings 11 and 12 are provided so as to face each other on both side surfaces 2d and 2e. Further, in the case 2, a buffer device 13, a pressure release part 14, and a power transmission part 15 are provided. Is stored.
上記ブッシングにおいて、16は磁器性の碍管であり、ケ
ース２の側面2d,2eに対し、押さえ金具17、パッキン兼
用の絶縁キャップ18等を介してナット20により締め付け
られている。21はその基部をケース２の外面に固着した
ボルト、22はボルト21に嵌装した金属性カラーを示す。
23はアルミナ磁器からなる気密保持用の短筒碍管であ
り、その内側外周端23aと、外側先端23bのメタライズ部
にはそれぞれコバールからなる環状の金属片24,25が固
着され、さらにこの金属片24,25がケース側面の貫通口2
d′,2e′の接合部と、中心導体26,27の外周面26a,27aと
にTIG溶接または銀ロウ付けされてケース内の気密が保
持されている。前記中心導体26は棒状に形成され、碍管
16並びに短筒碍管23を貫通するようにしてその中心に挿
通配置されており、その一端26b,27bはケース内に突出
し、また他端26c,27cはスリーブ28を介してEPTなどのゴ
ム絶縁物からなるストレスコーン形の口出線の芯線29に
接続されている。口出線はそのストレスコーン30の環状
凹部30aが碍管16の先端16aに嵌合されかつ接着されてい
る。90,91は中心導体26,27を碍管の内段部9bに固定する
ためのナットとシート状のパッキンであり、同ナット90
は中心導体の中間部に形成されたネジ部26d,27dに対し
ネジ着されるものでネジ着時、内段部9bの内面9b1に対
しパッキン91を介して当接するようにそのネジ着の位置
が調節される。92は内段部9bの外面9b2側の凹み9b2′に
対してシート状のパッキン31を介して回動不能に嵌合し
た回止め金具であり、さらにその外側からチューリップ
コンタクトからなる中間接触体32が中心導体に挿入さ
れ、さらに同接触体のテーパ状の貫通穴32aと中心導体
の外周面との隙間にはクサビ形の通電用の割りブッシュ
33を同導体に嵌装し、そしてまたさらにその外側からス
プリングワッシャー34を介してナット35により締め付け
ている。36はシール材を示す。28は芯線29と中心導体2
6,27の他端26e,27eとを電気的並びに機械的に接続する
スリーブであり、中心導体26,27とはネジ接続時にネジ
接続する外、さらに中間接触体32のスリ割状の接触部32
bが同スリーブの外周面28aに弾力的に接触するようにな
っている。37はスリーブ28とナット35との両端面間に介
在するスプリングワッシャーを示す。また、38は電界集
中を起こしやすいアース側の金属片24の近傍をその外側
から覆うようにしてケース外面に固着したステンレス製
等の金属からなる円弧状の電界緩和リング、18はさらに
その外側を被着した絶縁物、例えばEPT（エチレン・プ
ロピレン・ラバー）からなる絶縁キャップであり、特に
アース側の絶縁キャップ18はその鍔部18aが碍管16の押
圧部16aとケースの外側面2e1との間に密着介在してパッ
キンの役目をも果たすようになっている。40は電界緩和
リング38と金属片25及び絶縁キャップ18の外面に塗布し
たシリコーン樹脂系の充填剤、41は電源側のブッシング
に設けたエポキシ樹脂などからなる絶縁スペサーであ
り、同スペサー41は電界集中が起きやすい金属片24の近
傍をケースの内側から覆うようにしてケースにネジ42着
され、さらに同スペサー短筒碍管23の内面側を覆うと同
時に先端の保持部43aを中心導体26に嵌装して同導体26
のガタ付き（動き）をも規制するようにしている。In the bushing, reference numeral 16 denotes a porcelain porcelain insulator, which is fastened to the side surfaces 2d and 2e of the case 2 with a nut 20 via a holding metal fitting 17, an insulating cap 18 also serving as packing, and the like. Reference numeral 21 denotes a bolt having its base fixed to the outer surface of the case 2, and 22 denotes a metal collar fitted to the bolt 21.
Reference numeral 23 denotes a short cylindrical porcelain tube made of alumina porcelain for maintaining airtightness, and annular metal pieces 24 and 25 made of Kovar are fixed to the metallized portions of the inner peripheral edge 23a and the outer end 23b, respectively. 24, 25 are through holes on the side of the case 2
Airtightness inside the case is maintained by TIG welding or silver brazing to the joint of d ', 2e' and the outer peripheral surfaces 26a, 27a of the central conductors 26, 27. The central conductor 26 is formed in a rod shape and
16 and the short tubular porcelain tube 23 are inserted through the center so as to pass through, and one ends 26b and 27b thereof project into the case, and the other ends 26c and 27c of which are rubber insulators such as EPT via a sleeve 28. Is connected to the core wire 29 of the stress cone-shaped lead wire. An annular recess 30a of the stress cone 30 of the lead wire is fitted and adhered to the tip 16a of the porcelain insulator 16. 90 and 91 are a nut and a sheet-like packing for fixing the central conductors 26 and 27 to the inner step portion 9b of the porcelain bushing.
The intermediate portion formed screw portion 26d of the center conductor, when the screw wearing those screw wear to 27d, with respect to the inner surface 9b 1 of the inner step portion 9b of the screw attachment so as to contact via a packing 91 The position is adjusted. Reference numeral 92 denotes a detent metal fitting which is fitted into the recess 9b 2 ′ on the outer surface 9b 2 side of the inner step portion 9b through a sheet-like packing 31 so as not to rotate, and an intermediate contact composed of a tulip contact from the outside thereof. The body 32 is inserted into the central conductor, and a wedge-shaped split bush for energization is provided in the gap between the tapered through hole 32a of the contact body and the outer peripheral surface of the central conductor.
33 is fitted on the same conductor, and is further tightened by a nut 35 from the outside through a spring washer 34. 36 indicates a sealing material. 28 is a core wire 29 and a central conductor 2
A sleeve that electrically and mechanically connects the other ends 26e, 27e of the 6,27, and is screwed to the center conductors 26, 27 at the time of screw connection, and further, a slotted contact portion of the intermediate contact body 32. 32
The b is elastically brought into contact with the outer peripheral surface 28a of the sleeve. Reference numeral 37 denotes a spring washer that is interposed between both end surfaces of the sleeve 28 and the nut 35. Further, 38 is an arc-shaped electric field relaxing ring made of metal such as stainless steel fixed to the outer surface of the case so as to cover the vicinity of the metal piece 24 on the ground side where electric field concentration is likely to occur from the outside, and 18 further covers the outside. It is an insulating cap made of an adhered insulator, for example, EPT (ethylene propylene rubber). Especially, the insulating cap 18 on the ground side has a brim 18a between the pressing portion 16a of the porcelain tube 16 and the outer surface 2e 1 of the case. It also comes into close contact with them to serve as a packing. 40 is a silicone resin-based filler applied to the outer surface of the electric field relaxation ring 38, the metal piece 25, and the insulating cap 18, 41 is an insulating spacer made of epoxy resin or the like provided in the bushing on the power supply side, and the spacer 41 is an electric field A screw 42 is attached to the case so as to cover the vicinity of the metal piece 24 where concentration easily occurs from the inside of the case, and further covers the inner surface side of the same Spesser short tube porcelain tube 23 while fitting the holding portion 43a at the tip to the center conductor 26. Wear the same conductor 26
The rattling (movement) is also regulated.
なお、負荷側のブッシングの金属片24の近傍については
後述の固定ピストン44の一部によってケースの内側から
覆って同箇所の電界集中が緩和される。また、前記パッ
フア装置13は、上記のようにエポキシ樹脂等の絶縁物か
らなる固定ピストン44と、固定ピストンの外周面に対し
ピストンリング47を介して密嵌した同じく絶縁物の可動
シリンダー48と、可動シリンダー48の先端に一体的に付
設した同じく絶縁物のノズル49とからなり、さらに可動
シリンダー48内にはフィンガーコンタクト形の可動電極
50を同シリンダー48と一体に可動するように備えてい
る。なお、上記の可動電極50は前方の接触部が電源側の
ブッシングの中心導体26先端の接触部26bに対して弾力
的に接触しまた後方は負荷側の中心導体27に対しローラ
接触子51並びに棒状のガイド52とによって摺動可能に接
触している。53は可動シリンダー48と一体の動作板であ
り、連動軸54、伝達軸55さらには金属製のベローズ56を
介して後述の連動機構部57内の各機構部品と連結され
る。58はベローズ取付金具を示す。59は短冊状の薄板よ
りなる吸着剤保持板で、第９図に示す如く、複数枚直交
的に重ねて組み、夫々の上端折曲部をビス60によって上
蓋３の内面に固着されている。そして該吸着剤保持板上
には、第８図に示すように、細かい目の袋状の金網61と
同網の端部を挾着するようにしてスポット熔接した金枠
62とからなる吸着剤収納袋63が載置収納されている。該
吸着剤が収納袋63内には活性アルミナからなる吸着剤収
納されている。また、３相並設したパッフア装置13の内
の１相と２相との間に位置して備え付けた前記放圧部14
の放圧口形成板９には、第５図に示すように、平面山形
で、断面がＶ状の切溝9aが形成されている。65は放圧口
形成具65で、第３図ロに示すように、平面形状が前記放
圧口形成板９に形成した切溝9aの内側に沿った略バチ状
に形成されている。該放圧口形成具65の一端には、軸着
部65aが固着されている。そして、この放圧口形成具65
を、第４図に示すように、その外側が放圧口形成板９に
形成した切溝9aの内側に沿うように配置し、適宜位置を
TIG熔接9dによって一体固着されている。66は放圧口形
成具65の軸着部65aに対向する位置の上蓋３の内面3aに
一体に固着した固定金具で、これに軸着部66aが形成さ
れ、これら両軸着部65a,66a間は連結板67によって連結
されている。なお、連結板67は、第７図に示すように、
その両端の軸着穴67a,67bの一方が長穴に形成され、他
方が丸穴に形成されている。68は軸着用のピンを示す。
69はケース側面間に介在した補強板を示す。The vicinity of the metal piece 24 of the bushing on the load side is covered from the inside of the case by a part of a fixed piston 44, which will be described later, so that electric field concentration at the same location is relaxed. Further, the buffer device 13 is a fixed piston 44 made of an insulating material such as epoxy resin as described above, and a movable cylinder 48 of the same insulating material that is closely fitted to the outer peripheral surface of the fixed piston via a piston ring 47, It consists of a nozzle 49 made of the same insulating material that is integrally attached to the tip of the movable cylinder 48, and the movable electrode of the finger contact type is inside the movable cylinder 48.
50 is provided so as to be movable integrally with the cylinder 48. The movable electrode 50 has a front contact portion elastically contacting the contact portion 26b at the tip of the center conductor 26 of the bushing on the power source side, and a rear contact portion on the load side center conductor 27 and a roller contactor 51 on the rear side. It is slidably in contact with the rod-shaped guide 52. Reference numeral 53 is an operating plate integrated with the movable cylinder 48, and is connected to each mechanical component in an interlocking mechanism unit 57 described later via an interlocking shaft 54, a transmission shaft 55, and a metal bellows 56. Reference numeral 58 indicates a bellows mounting bracket. Reference numeral 59 denotes an adsorbent holding plate made of a strip-shaped thin plate, and as shown in FIG. 9, a plurality of the adsorbent holding plates are assembled orthogonally to each other, and their upper end bent portions are fixed to the inner surface of the upper lid 3 by screws 60. Then, as shown in FIG. 8, on the adsorbent holding plate, a metal mesh 61 in the form of a bag having a fine mesh and a metal frame spot-welded so that the ends of the mesh are sandwiched.
An adsorbent storage bag 63 composed of 62 is placed and stored. An adsorbent made of activated alumina is stored in the storage bag 63. Further, the pressure relief portion 14 is provided between the first phase and the second phase of the three-phase buffer device 13 arranged in parallel.
As shown in FIG. 5, the pressure release port forming plate 9 is provided with a kerf 9a having a flat mountain shape and a V-shaped cross section. Reference numeral 65 is a pressure release port forming tool 65, and as shown in FIG. 3B, the planar shape is formed into a substantially drum shape along the inside of the cut groove 9a formed in the pressure release port forming plate 9. A shaft attachment portion 65a is fixed to one end of the pressure release port forming tool 65. And this pressure release port forming tool 65
As shown in FIG. 4, the outside is arranged along the inside of the cut groove 9a formed in the pressure release port forming plate 9, and the appropriate position is set.
It is integrally fixed by TIG welding 9d. Reference numeral 66 denotes a fixing metal piece integrally fixed to the inner surface 3a of the upper lid 3 at a position facing the shaft attachment portion 65a of the pressure release port forming tool 65, and the shaft attachment portion 66a is formed on this. The spaces are connected by a connecting plate 67. The connecting plate 67, as shown in FIG.
One of the shaft attachment holes 67a, 67b at both ends thereof is formed as an elongated hole, and the other is formed as a round hole. 68 indicates a pin for shaft mounting.
Reference numeral 69 indicates a reinforcing plate interposed between the side surfaces of the case.
次に仕切板８によって区画されたケース２の下部の動力
機構部57について説明する。動力機構部57は上記開閉部
10に対し、開閉用の駆動力を伝達して開閉部10を開閉動
作せしめるものであり、また該機構部の下端の開口部2b
にはパッキン５を介して取り外し可能な底蓋４が気密的
に取付けられている。Next, the power mechanism section 57 below the case 2 partitioned by the partition plate 8 will be described. The power mechanism unit 57 is the opening / closing unit.
A driving force for opening and closing is transmitted to the opening and closing unit 10 to open and close the opening and closing unit 10, and the opening 2b at the lower end of the mechanism unit is also used.
A bottom lid 4 which is removable via a packing 5 is airtightly attached to the.
なお、この底蓋４は万が一、ケース内において内圧が止
どまらない場合に、同蓋を変形せしめて同蓋とケース
（正確にはケースのパッキン）との間に隙間を形成し、
その隙間より内圧をケース外へ放圧してケースの破損を
防止するように取り付けられている。If the internal pressure does not stop in the case, the bottom cover 4 is deformed to form a gap between the cover and the case (to be exact, packing of the case),
It is attached so that internal pressure is released from the gap to the outside of the case to prevent damage to the case.
なお、ケース２内は上部の開閉部10のみが1.4〜2.5kg/c
m2の圧力になるようにSF6ガス70が充填され、また下部
の動力機構部57側は気中のままで気密が保持されてい
る。In case 2, only the upper opening / closing part 10 is 1.4 to 2.5 kg / c.
SF6 gas 70 is filled so as to have a pressure of m 2 , and airtightness is maintained in the lower power mechanism portion 57 side in the air.
次に放圧動作を説明する。Next, the pressure release operation will be described.
今、雷サージ等の異常電圧によって開閉部10内で短絡事
故が起こったとする。すると開閉部10内はアークの発生
により急激に内部圧力が高められ、それに伴って開閉部
側のケースはその上蓋３と側面2d,2eとが大きく膨らん
で変形する。上記のように上蓋３が変形するとその変形
に伴って開閉部10内においては、放圧口形成具65に連結
された連結板67が上方に引っ張られるため上記形成具65
の一端65a（軸着部側）には同端を上方に持ち上げるよ
うにした過大な引張力が作用する。そのため放圧口形成
板９の切溝9aが一挙に破断し、放圧口が形成され、高ま
った内圧はケースの上部の開閉部10から下部の動力機構
部57側へ拡散されるようにして放圧される。Now, it is assumed that a short circuit accident occurs in the switching unit 10 due to an abnormal voltage such as a lightning surge. Then, the internal pressure is rapidly increased in the opening / closing part 10 due to the generation of the arc, and the case on the opening / closing part side is greatly expanded and deformed by the upper lid 3 and the side surfaces 2d, 2e. When the upper lid 3 is deformed as described above, the connecting plate 67 connected to the pressure release port forming tool 65 is pulled upward in the opening / closing part 10 due to the deformation, so that the forming tool 65 is formed.
An excessive tensile force is applied to one end 65a (on the side of the shaft attachment portion) of which the same end is lifted upward. Therefore, the cut groove 9a of the pressure release port forming plate 9 is ruptured at once to form a pressure release port, and the increased internal pressure is diffused from the opening / closing section 10 in the upper part of the case to the power mechanism section 57 side in the lower part. Is released.
しかしながら動力機構部側に放圧された上記内圧は、放
圧口の形成により容積がケース全体に拡張された状態と
なり、その分だけ内圧が低下する。また、同時に上記形
成された放圧口の下方には機構部の各部材があるため、
それらに内圧が衝突し、さらには緩衝ないしは偏向され
て機構部側のケース内においてう余曲折し、その勢いが
弱められてケース内に止どまる。また万が一、上記にお
いて内圧が差程に弱められない場合には、今度は動力機
構部側の開口部を閉鎖する蓋４が変形して、同蓋とケー
スとの間で隙間を形成し、その隙間から直ちに内圧をケ
ース外へ放圧してケースの破損を防止するようになって
いる。However, the internal pressure released to the power mechanism portion side is in a state where the volume is expanded to the entire case due to the formation of the pressure release port, and the internal pressure is reduced by that amount. At the same time, since the members of the mechanism section are below the pressure relief port formed above,
The internal pressure collides with them, and is further buffered or deflected to bend and bend in the case on the mechanical portion side, and the momentum is weakened and remains in the case. In the unlikely event that the internal pressure is not weakened to the above level, the lid 4 that closes the opening on the power mechanism portion side is deformed, and a gap is formed between the lid and the case. Immediately release the internal pressure from the gap to the outside of the case to prevent damage to the case.
なお、上記放圧構造は柱上用のガス開閉器だけではな
く、地中形、地上設置形等のガス開閉器にも当然応用で
きるものであり、さらにケース内を、上部に動力機構
部、下部に開閉部を区画するようにしても何等かまわな
い。In addition, the above pressure release structure can be naturally applied not only to the gas switch for the pillar but also for the gas switch of the underground type, the ground-installed type, etc. It does not matter if the opening / closing part is divided into the lower part.
本考案は以上のようであるから仕切板によって上下２つ
に区画したその内の一方の開閉部において、内部短絡事
故が万が一発生した場合には、その際の内圧上昇により
ケースが変形し、それに伴って上記の仕切板に設けた放
圧部が動作して直ちに放圧口を形成し、上昇した内圧を
同放圧口を経て他方の動力機構部に放出するため、同圧
力は動力機構部をも含めたケース全体の容積に対して放
圧することになるため、内圧はそのために一挙に勢力が
弱められる。また同時に上記の放圧時、該圧力が下部側
の動力機構部材の各部材に対して衝突されてさらにその
勢いが弱められるために内圧を極力ケース内に止どめる
ことができて、安全性の高い放圧構造を提供できる。Since the present invention is as described above, in the event that an internal short-circuit accident occurs in one of the opening and closing parts that are divided into upper and lower parts by the partition plate, the internal pressure rises at that time and the case is deformed. Along with this, the pressure release portion provided on the partition plate operates to immediately form a pressure release port, and the increased internal pressure is released to the other power mechanism unit through the pressure release port. Since the pressure will be released to the volume of the entire case including the internal pressure, the internal pressure is weakened at once. At the same time, when the pressure is released, the pressure collides with each member of the power mechanism member on the lower side to further weaken the momentum, so that the internal pressure can be stopped in the case as much as possible, which is safe. A highly reliable pressure release structure can be provided.
また、上記において内圧をケース内に止どめることがで
きなくても動力機構部側の蓋をその内圧によって変形さ
せその変形によって隙間を形成し、そして放圧するため
ケースが破損したりすることはない。In addition, even if the internal pressure cannot be stopped in the above case, the lid on the power mechanism side is deformed by the internal pressure to form a gap by the deformation, and the case is damaged because the pressure is released. There is no.
また、開閉部にのみ、SF6ガスを充填（封入）するため
無駄がなく経済的である。また、ケースを単一の仕切板
によって上下２つに区画し、そして開閉部と動力機構部
とを１つのケースに収納する構造ため気密上、組立上合
理的である。In addition, since SF6 gas is filled (enclosed) only in the opening / closing part, there is no waste and it is economical. Further, since the case is divided into upper and lower parts by a single partition plate, and the opening / closing part and the power mechanism part are housed in one case, it is rational in terms of airtightness and assembly.
特に本案においては開閉器側において内部短絡事故があ
り、ケースが変形した場合は、放圧口形成板（９）、切
溝（9a）、放圧口形成具（65）、連結板（67）からなる
強制的な放圧装置により放圧口が形成され動力機構部側
へ速やかに且つ確実に放出されるため、ケース破壊を防
止することができ、安全性を高めることができる。Especially in the case of the present invention, when there is an internal short circuit accident on the switch side and the case is deformed, the pressure release port forming plate (9), the cut groove (9a), the pressure release port forming tool (65), the connecting plate (67). Since the pressure-release port is formed by the forced pressure-release device consisting of and is quickly and surely released to the power mechanism section side, it is possible to prevent the case from being broken and improve the safety.
又、動力機構側への放圧時、放圧口の形成される位置が
動力機構部の真上に位置しているため、放圧された圧力
が機構の部材に一旦衝突し、拡散され冷却されて、蓋へ
の集中的な加圧（エネルギー集中）が弱められ、該蓋
（４）の変形が抑制されて外部への放圧が防止される結
果、安全性が高まる。Also, when pressure is released to the power mechanism side, the position where the pressure release port is formed is located directly above the power mechanism section, so the released pressure once collides with the member of the mechanism and is diffused and cooled. As a result, concentrated pressure (energy concentration) on the lid is weakened, deformation of the lid (4) is suppressed, and pressure release to the outside is prevented. As a result, safety is enhanced.
図面は本考案の実施例を示すもので、第１図は柱上用ガ
ス開閉器の縦断面図、第２図はブッシングの縦断面図、
第３図は放圧口形成具を示すもので、その（イ）は正面
図、（ロ）は平面図、（ハ）は側面図を示す。第４図は
放圧口形成具と放圧口形成板との組立図、第５図（Ａ）
は放圧口形成板の平面図、同（Ｂ）は切溝の断面図、第
６図は放圧口形成具を放圧口形成板に固着した状態の側
断面図、第７図は連結板の側面図、第８図は吸着剤の収
納状態を示す平面図、第９図は吸着剤保持板の平面図で
ある。 ２……ケース、４……蓋、８……仕切板、９……放圧口
形成板、9a……切溝、10……開閉部、14……放圧部、57
……動力機構部、67……連結板、65……放圧口形成具The drawings show an embodiment of the present invention. FIG. 1 is a vertical cross-sectional view of a pole gas switch, and FIG. 2 is a vertical cross-sectional view of a bushing.
FIG. 3 shows a pressure release port forming tool, in which (a) is a front view, (b) is a plan view, and (c) is a side view. FIG. 4 is an assembly view of the pressure release port forming tool and the pressure release port forming plate, and FIG. 5 (A).
Is a plan view of the pressure release port forming plate, (B) is a cross-sectional view of the kerf, FIG. 6 is a side sectional view of the pressure release port forming tool fixed to the pressure release port forming plate, and FIG. FIG. 8 is a side view of the plate, FIG. 8 is a plan view showing a stored state of the adsorbent, and FIG. 9 is a plan view of the adsorbent holding plate. 2 ... Case, 4 ... Lid, 8 ... Partition plate, 9 ... Pressure release port forming plate, 9a ... Cut groove, 10 ... Open / close part, 14 ... Pressure release part, 57
...... Power mechanism, 67 ...... Connecting plate, 65 ...... Pressure release port forming tool
Claims (1)
て大略上下２つの室に区画し、その一方の室には開閉部
（10）を収納すると共にSF6ガスを充填し、また他方の
室には上記開閉部を開閉動作させる動力機構部（57）を
収納したガス開閉器において、上記仕切板がケース
（２）の上下を区画する単一のもので、前記仕切板
（８）に設けた放圧用開口穴（8b）の下面に固着した平
面山形でＶ状断面の切溝（9a）の内側に固着したバチ状
の放圧口形成板（９）、該形成板の切溝（9a）を形成し
た放圧口形成具（65）、前記上部室に収納した開閉器部
（10）と前記放圧口形成具（65）とを連結する連結板
（67）とからなる強制的な放圧装置を設け、且つ前記放
圧口を前記動力機構部（57）の真上に位置させたことを
特徴とするガス開閉器における放圧構造。1. A case in a hermetically-sealed state is partitioned by a partition plate into two chambers, an upper chamber and a lower chamber, and an opening / closing unit (10) is housed in one chamber and SF6 gas is filled in the other chamber. Is a gas switch which houses a power mechanism unit (57) for opening and closing the opening and closing unit, and the partition plate is a single one that divides the case (2) from above and below, and is provided on the partition plate (8). Vase-shaped pressure release port forming plate (9) fixed to the inside of the V-shaped cut groove (9a) that is fixed to the lower surface of the pressure release opening (8b), and the cut groove (9a) of the formation plate And a connecting plate (67) for connecting the switch section (10) housed in the upper chamber and the pressure release port forming tool (65). A pressure release mechanism in a gas switch, characterized in that a pressure device is provided, and the pressure release port is located directly above the power mechanism section (57). .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988069669U JPH076588Y2 (en) | 1988-05-26 | 1988-05-26 | Pressure release structure in gas switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988069669U JPH076588Y2 (en) | 1988-05-26 | 1988-05-26 | Pressure release structure in gas switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01172240U JPH01172240U (en) | 1989-12-06 |
| JPH076588Y2 true JPH076588Y2 (en) | 1995-02-15 |
Family
ID=31294942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988069669U Expired - Lifetime JPH076588Y2 (en) | 1988-05-26 | 1988-05-26 | Pressure release structure in gas switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH076588Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59141406U (en) * | 1983-03-08 | 1984-09-21 | 三菱電機株式会社 | gas insulated switchgear |
| JPS59191408A (en) * | 1983-04-12 | 1984-10-30 | 株式会社東芝 | gas insulated cubicle |
-
1988
- 1988-05-26 JP JP1988069669U patent/JPH076588Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01172240U (en) | 1989-12-06 |
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