JPS6222037Y2 - - Google Patents
Info
- Publication number
- JPS6222037Y2 JPS6222037Y2 JP12117080U JP12117080U JPS6222037Y2 JP S6222037 Y2 JPS6222037 Y2 JP S6222037Y2 JP 12117080 U JP12117080 U JP 12117080U JP 12117080 U JP12117080 U JP 12117080U JP S6222037 Y2 JPS6222037 Y2 JP S6222037Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- pipe
- spool
- pressure oil
- main control
- 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
Links
- 239000012530 fluid Substances 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 8
- 239000000919 ceramic Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 241000219198 Brassica Species 0.000 description 1
- 235000003351 Brassica cretica Nutrition 0.000 description 1
- 235000003343 Brassica rupestris Nutrition 0.000 description 1
- QKSKPIVNLNLAAV-UHFFFAOYSA-N bis(2-chloroethyl) sulfide Chemical compound ClCCSCCCl QKSKPIVNLNLAAV-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 235000010460 mustard Nutrition 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Description
【考案の詳細な説明】
この考案は、電力用回路しや断器の操作装置に
係り、特に接触子の投入及びしや断用シリンダの
流体制御弁を改良したしや断器の流体操作機構に
関するものである。[Detailed description of the invention] This invention relates to an operating device for a power circuit breaker, and in particular, a fluid operating mechanism for a breaker that improves the fluid control valve of the contact closing and breaker cylinder. It is related to.
回路しや断器としては、絶縁性能及び電流しや
断性能に優れたSF6ガスを消弧媒体として使用す
るガスしや断器が近時広く実用されている。しや
断行程中に可動接触子をピストンとして作動させ
て、バツフア室に封入したSF6ガスを充分圧縮
し、得られた高圧ガスをアークに吹付けて消弧を
行なういわゆるバツフア形ガスしや断器が特に多
く実用されている。従来、超高圧系においてもす
でに２サイクルしや断器が実現している。これら
の操作機構には、ガス圧操作と油圧操作がありい
づれも操作力の大きなことに相俟つて、より高速
力を得るようにしてしや断性能向上がはかられ、
またその性能向上への要求は大である。油圧操作
の場合は、ガス操作に比較して流体圧力が大であ
り、操作機構をコンパクトに実現でき経済的であ
る。しかし操作器を制御する例えば電磁弁も大型
化せざるを得なくなる。一般には電磁反発式電磁
制御弁が使用されるが、長時間に渡り大きな力を
得るには大型化が必要で、その動作速度も10mS
程度のものであり、高速化、高性能化が求められ
ている。 As circuit breakers, gas breakers that use SF6 gas as an arc-extinguishing medium, which has excellent insulation performance and current cutoff performance, have recently been widely used. During the burnout stroke, the movable contactor is operated as a piston to sufficiently compress the SF6 gas sealed in the buffer chamber, and the resulting high-pressure gas is blown onto the arc to extinguish the arc. Especially many vessels are in practical use. Conventionally, two-cycle disconnection has already been achieved even in ultra-high pressure systems. These operating mechanisms include gas pressure operation and hydraulic operation, and in combination with the large operating force of both, it is possible to obtain higher speed force and improve shearing performance.
Moreover, there is a great demand for improving its performance. In the case of hydraulic operation, the fluid pressure is greater than that in gas operation, and the operation mechanism can be made compact and economical. However, the solenoid valve that controls the operating device, for example, must also be increased in size. Generally, electromagnetic repulsion type electromagnetic control valves are used, but in order to obtain large force over a long period of time, they need to be larger, and their operating speed is also 10 mS.
However, there is a need for higher speed and higher performance.
本案の目的は、これらの要求にこたえるために
なされたもので高速度の応答が継続して得られる
すなわち、しや断信号から制御弁開放まで数mS
以下で実現させることができる流体操作機構を得
るにある。第２の目的は操作力を大きくとりそれ
を持続させ得るようにすることができる流体操作
機構を得ることである。第３の目的は液漏れに対
する信頼性を向上させた流体操作機構を得ること
である。 The purpose of this project was to meet these demands by providing a continuous high-speed response, i.e., a few mS from the shrinkage signal to the control valve opening.
The objective is to obtain a fluid manipulation mechanism that can be realized as follows. The second object is to obtain a fluid operating mechanism that can take a large operating force and sustain it. The third objective is to obtain a fluid operating mechanism with improved reliability against liquid leakage.
本案について図に示す一実施例に従つて説明す
る。３１はしや断接点で、３２はこの接点３１を
投入又はしや断する油圧シリンダ、２４ａ，２４
ｂは主制御弁を示す。一方７は切換弁で、この切
換弁７はフオースモータ１で制御される。フオー
スモータ１を構成する台４の枠３及び３ａ内に
は、例えばセラミツクパイル圧電素子２が台４の
長手方向に移動自在に設置されている。台４の一
端に増巾用レバー５を回動自在に取付ける穴があ
り、支点６ａから短い方の端６ｃが圧電素子２の
枠３ａに、圧縮コイルばね３３によつて押し当て
られている。支点６ａから遠い方の端には支点６
ｂがあり、切換弁７のスプール１１を動かすロツ
ド９の一端と回動自在に連結されている。切換弁
７は弁箱８とスプール１１とから成り、弁箱８に
はスプール１１の中間部にあるくびれた部分に開
口する管路１４を取付けた穴と、スプールランド
によつて、管路１４に連通する圧油側と、管路１
３，１６の排油側につながるポート管路１２，１
５用の穴が設けてある。主制御弁２４は、投入側
主制御弁２４ｂとしや断側主制御弁２４ａがあ
る。主制御弁２４は弁箱２６についていえば内部
に、一端にポペツト、他端にピストン２２Ａを持
つ弁体２２およびばね２５で構成される。油圧シ
リンダ３２はシリンダ２８とピストン２９、ロツ
ド３０から成り、反ロツド側から投入用圧油を、
またロツド側からしや断用圧油を供給する管路２
７，２７ａをシリンダ２８に夫々設けてある。 The present invention will be explained according to an embodiment shown in the drawings. 31 is a contact point, 32 is a hydraulic cylinder that makes or breaks this contact point 31, 24a, 24
b indicates the main control valve. On the other hand , 7 is a switching valve, and this switching valve 7 is controlled by the force motor 1 . For example, a ceramic pile piezoelectric element 2 is installed within the frames 3 and 3a of the stand 4 constituting the focus motor 1 so as to be movable in the longitudinal direction of the stand 4. There is a hole in one end of the base 4 in which the width increasing lever 5 is rotatably mounted, and the shorter end 6c from the fulcrum 6a is pressed against the frame 3a of the piezoelectric element 2 by a compression coil spring 33. The end far from the fulcrum 6a has the fulcrum 6
b, and is rotatably connected to one end of the rod 9 that moves the spool 11 of the switching valve 7 . switching valve
7 consists of a valve box 8 and a spool 11, and the valve box 8 is connected to the pipe 14 through a hole in which a pipe 14 is attached, which opens at the constricted part in the middle of the spool 11, and a spool land. Pressure oil side and pipe line 1
Port pipe lines 12, 1 connected to the oil drain side of 3, 16
There is a hole for 5. The main control valves 24 include a closing-side main control valve 24b and a cutting-side main control valve 24a. The main control valve 24 includes a valve body 22 having a poppet at one end and a piston 22A at the other end, and a spring 25 inside. The hydraulic cylinder 32 consists of a cylinder 28, a piston 29, and a rod 30, and inputs pressure oil from the side opposite to the rod.
Also, pipe line 2 that supplies pressure oil for mustard cutting on the rod side.
7 and 27a are provided in the cylinder 28, respectively.
まず図においてしや断器の接点３１を図のよう
に投入しようとする場合フオースモータ１の圧電
素子２の電源３４の電圧をきる。従つて電圧に比
例して伸びる圧電素子は縮んだ状態を保つ。この
時レバー５は、ばね３３によつて、支点６ａを介
して圧電素子２の枠３ａに一端６ｃを押し当てる
ので支点６ｂに回動自在に設けたロツド９を介し
てピン１０で連結された制御弁７のスプール１１
は右行し、図の位置に停止する。従つて、高圧油
圧源であるアキユームレータ１８から管路２０→
１４を通つた圧油は、スプール１１の中間のくび
れた部分を介して管路１２に送られる。従つて主
制御弁２４ａの左端から弁箱２６ａとピストン２
２Aaにより構成される部屋に送られ、弁体２２
ａは右行し、ポペツト端は、高圧油を送る管路２
６０を閉止する。一方、シリンダ３２のロツド側
は管路２７ａを介して弁体２２ａの中間のくびれ
た部分を通り連結した管路１９を経て大気に開放
された油タンクに戻る。また図示していないが、
ポンプにより再び送り出されてアキユームレータ
１８に貯えられる。同時に切換弁７の左側の空間
では、高圧油がスプール１１によりしや断され、
主制御弁２４に連通する管路１５は、管路１６を
経て大気に開放された油タンクに連通している。
従つて主制御弁２４ｂの弁箱２６とピストン２２
Ａによつて構成された部屋は大気に開放される。
弁体２２はポペツト端からの圧油により、ばね２
５に打勝つて右行し図の状態となる。従つて、ポ
ペツト端のピストン部分により管路１９は閉止さ
れ、一方、アキユームレータ１８からの圧油は管
路２０を経て、開口した部分２１のポペツト弁部
から管路２７を通りシリンダ３２の反ロツド側に
供給される。そこでピストン２９は右行し、ロツ
ド３０により回路接点３１を投入する。次に、接
点３１をしや断する時は圧電素子２の電源３４に
所定の電圧を加えると、ほぼ電圧に比例して圧電
素子２は長手方向に伸びる。従つてレバー５は、
ばね３３の力に抗して、回動し、切換弁７のスプ
ール１１は左行し、右側のスプールランドが管路
１４と１２の中間に、また左側のスプールランド
が管路１５の開口部の左側に夫々停止する。そこ
で先の投入とは逆に、シリンダ３２のロツド側か
ら圧油が供給され反ロツド側の部屋は排油される
のでピストン２９は激しく左行し、接点３１はし
や断される。 First, when attempting to close the contact 31 of the shield breaker as shown in the figure, the voltage of the power source 34 of the piezoelectric element 2 of the force motor 1 is turned off. Therefore, the piezoelectric element, which expands in proportion to the voltage, remains in a contracted state. At this time, the lever 5 presses one end 6c against the frame 3a of the piezoelectric element 2 via the fulcrum 6a by the spring 33, so that it is connected to the fulcrum 6b with a pin 10 via a rotatably provided rod 9. Spool 11 of control valve 7
moves to the right and stops at the position shown in the figure. Therefore, the pipe line 20 →
The pressure oil that has passed through 14 is sent to conduit 12 via a constricted middle portion of spool 11. Therefore, the valve box 26a and the piston 2 are connected from the left end of the main control valve 24a.
2Aa, and the valve body 22
A runs to the right, and the poppet end is pipe 2 that sends high-pressure oil.
60 is closed. On the other hand, the rod side of the cylinder 32 returns to the oil tank, which is open to the atmosphere, via a pipe 27a and a pipe 19 connected to the valve body 22a through the constricted middle part. Also, although not shown,
It is pumped out again and stored in the accumulator 18. At the same time, high pressure oil is cut off by the spool 11 in the space on the left side of the switching valve 7 .
A pipe line 15 communicating with the main control valve 24 communicates via a pipe line 16 with an oil tank open to the atmosphere.
Therefore, the valve body 26 and piston 22 of the main control valve 24b
The room constituted by A is open to the atmosphere.
The valve body 22 is pressed against the spring 2 by pressure oil from the poppet end.
5 and moves to the right, resulting in the state shown in the figure. Therefore, the piston part at the poppet end closes the pipe line 19, while the pressure oil from the accumulator 18 passes through the pipe line 20, from the poppet valve part of the open part 21, through the pipe line 27 and into the cylinder 32 . Supplied to the anti-rod side. Then, the piston 29 moves to the right and the rod 30 closes the circuit contact 31. Next, when the contact 31 is to be disconnected, a predetermined voltage is applied to the power source 34 of the piezoelectric element 2, and the piezoelectric element 2 extends in the longitudinal direction approximately in proportion to the voltage. Therefore, the lever 5 is
It rotates against the force of the spring 33, and the spool 11 of the switching valve 7 moves to the left, with the spool land on the right being located between pipes 14 and 12, and the spool land on the left being located at the opening of pipe 15. They will each stop on the left side of the road. Then, contrary to the previous injection, pressure oil is supplied from the rod side of the cylinder 32 and the oil is drained from the chamber on the opposite side, so the piston 29 moves violently to the left and the contact 31 is suddenly broken.
尚圧電素子２はセラミツクパイルに限らずまた
力又は変位量の増巾方法もレバー以外に油圧によ
りパスカルの原理を応用した方法によつてもよ
い。 The piezoelectric element 2 is not limited to a ceramic pile, and the method for increasing the force or displacement amount may be a method applying Pascal's principle using hydraulic pressure instead of a lever.
上記構成の本案によれば、第１の効果は応動速
度が早いことで、信号から制御弁の開放まで数
ms以下で作動し、しや断性能を大巾に向上でき
ることである。実験結果では信号を発してからお
よそ1msのおくれがあり3msで開放できた。 According to the main proposal of the above configuration, the first effect is that the response speed is fast, and the time from the signal to the opening of the control valve is several steps.
It operates in less than ms and can greatly improve shearing performance. In the experimental results, there was a delay of about 1ms after the signal was issued, and the opening was completed in 3ms.
第２は、大きな力が得られることである。油圧
増巾を設けるとトンオーダの操作力は容易であ
る。 The second is that a large amount of force can be obtained. If a hydraulic expansion is provided, the operating force on the order of tons can be easily achieved.
また圧電素子の変位が電圧に比例するため、電
圧調整で細かい油圧制御が可能である。圧電素子
は一般に、制御電源に高圧を必要とし、更に素子
の寿命を伸ばすためにSCR等により電圧のかけ
方を急激にならないように制御するのが普通であ
るが、しや断器に使用する場合は、しや断器その
ものの寿命が１万回といつたごく短いものでよく
一般に求められる109回といつた要求は全く必要
ない従つて、急激に課電するため電源回路が全く
シンプルなものとなり、安価にしかも半導体回路
を必要とせず構成部品数が圧倒的に少なく高信頼
性に富んだしや断器の流体操作機構を提供するこ
とができる。さらに、一つの切換弁で二つの主制
御弁を操作させたので、部品点数を削減すること
ができるとともに、切換弁に接続する配管を最少
にすることで液漏れに対する信頼性を向上させた
しや断器の流体操作機構を提供することができ
る。 Furthermore, since the displacement of the piezoelectric element is proportional to the voltage, fine hydraulic control is possible by adjusting the voltage. Piezoelectric elements generally require high voltage as a control power source, and in order to extend the life of the element, it is common to use SCR etc. to control the voltage application so that it does not become sudden. In this case, the lifespan of the circuit breaker itself is very short, such as 10,000 cycles, and the generally required requirement of 10 to 9 cycles is not necessary at all.Therefore, the power supply circuit is completely simple because the power is applied suddenly. Therefore, it is possible to provide a fluid operating mechanism for a shield disconnector that is inexpensive, does not require a semiconductor circuit, has an extremely small number of component parts, and is highly reliable. Furthermore, since one switching valve operates two main control valves, the number of parts can be reduced, and by minimizing the number of piping connected to the switching valve, reliability against liquid leaks has been improved. It is possible to provide a fluid operation mechanism for a disconnector or a disconnector.
図は、本案の一実施例を示す系統説明図であ
る。
１……フオースモータ、２……圧電素子、５…
…レバー、７……切換弁、８……弁箱、１１……
スプール、２２……弁体、２２ａ……弁体、２４
……主制御弁、２６，２６ａ……弁箱、１８……
アキユームレータ、２８……シリンダ、２９……
ピストン、３０……ロツド、３２……シリンダ、
３１……接点。
The figure is a system explanatory diagram showing an embodiment of the present invention. 1 ... force motor, 2... piezoelectric element, 5...
...Lever, 7 ...Switching valve, 8...Valve box, 11...
Spool, 22... Valve body, 22a... Valve body, 24
...Main control valve, 26, 26a...Valve box, 18...
Accumulator, 28...Cylinder, 29...
Piston, 30... Rod, 32 ... Cylinder,
31...Contact.
Claims (1)
つ中間部にくびれを有するスプールとを有する切
換弁と、前記スプールのくびれた部分にアキユー
ムレータからの圧油を供給する第１の配管と、前
記スプールを一方向に変位させ前記第１の配管か
らの圧油を一方の主制御弁につながる第２の配管
に供給するバネと、前記スプールを投入またはし
や断指令により前記バネと反対方向に変位させ前
記第１の配管からの圧油を他方の主制御弁につな
がる第３の配管に供給する圧電素子とを備えるこ
とを特徴とするしや断器の流体操作機構。 A switching valve having a valve box, a spool movably housed inside the valve box and having a constriction in the middle, and a first pipe for supplying pressure oil from an accumulator to the constriction of the spool. a spring that displaces the spool in one direction and supplies pressure oil from the first pipe to a second pipe connected to one main control valve; a piezoelectric element that is displaced in the opposite direction and supplies pressure oil from the first pipe to a third pipe connected to the other main control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12117080U JPS6222037Y2 (en) | 1980-08-28 | 1980-08-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12117080U JPS6222037Y2 (en) | 1980-08-28 | 1980-08-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5745137U JPS5745137U (en) | 1982-03-12 |
| JPS6222037Y2 true JPS6222037Y2 (en) | 1987-06-04 |
Family
ID=29481837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12117080U Expired JPS6222037Y2 (en) | 1980-08-28 | 1980-08-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6222037Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH036904U (en) * | 1989-06-08 | 1991-01-23 |
-
1980
- 1980-08-28 JP JP12117080U patent/JPS6222037Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5745137U (en) | 1982-03-12 |
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