JPS62172614A - Circuit breaker hydraulic pressure operating apparatus - Google Patents
Circuit breaker hydraulic pressure operating apparatusInfo
- Publication number
- JPS62172614A JPS62172614A JP1447186A JP1447186A JPS62172614A JP S62172614 A JPS62172614 A JP S62172614A JP 1447186 A JP1447186 A JP 1447186A JP 1447186 A JP1447186 A JP 1447186A JP S62172614 A JPS62172614 A JP S62172614A
- Authority
- JP
- Japan
- Prior art keywords
- port
- oil
- valve
- pressure oil
- 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.)
- Granted
Links
- 239000003921 oil Substances 0.000 description 60
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は遮断器を動作させるための油圧操作器に関する
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a hydraulic operating device for operating a circuit breaker.
第５図は従来の遮断器用油圧操作器の１例を示し、油圧
ユニット１．蓄圧器２、操作シリンダ３、主ブ↑４．パ
イロット弁Ａとパイロット弁Ｂおよびパイロット弁Ｃよ
りなる弁ブロック５、投入用ソレノイド弁６．遮断用ソ
レノイドバルブ７より構成されている。なお以下に、ソ
レノイド弁をＳｖ、パイロット弁ＡをＰＶ （Ａ）、パ
イロット弁ＢをＰＶ （Ｂ）、パイＯ，ト弁ＣをＰＶ
（Ｃ）とそれぞれ略記する。FIG. 5 shows an example of a conventional hydraulic actuator for a circuit breaker, and shows a hydraulic unit 1. Pressure accumulator 2, operation cylinder 3, main valve ↑4. A valve block 5 consisting of a pilot valve A, a pilot valve B, and a pilot valve C, and a closing solenoid valve 6. It is composed of a shutoff solenoid valve 7. In addition, below, the solenoid valve is Sv, the pilot valve A is PV (A), the pilot valve B is PV (B), the pi O, and the pi valve C are PV.
Each is abbreviated as (C).
油圧ユニット１において、油タンクＩＡ内の作動油はモ
ータＩＢが駆動するポンプｔＣにフィルタＩＤを通じて
吸込み加圧され、圧油は逆止弁ＩＥより外部に供給され
る。なおＩＦはリリーフ弁、ＩＧは止弁、ＩＨは圧力計
、ＩＩは圧力開閉器、またＩＪは圧油タンクＩＡの外側
に取付けた止弁である。In the hydraulic unit 1, hydraulic oil in an oil tank IA is sucked into a pump tC driven by a motor IB through a filter ID and pressurized, and the pressure oil is supplied to the outside through a check valve IE. Note that IF is a relief valve, IG is a stop valve, IH is a pressure gauge, II is a pressure switch, and IJ is a stop valve attached to the outside of the pressure oil tank IA.
まず投入動作について説明する。First, the charging operation will be explained.
ａ、投入指令が出されると、投入用ＳＶ６のコイル６ａ
が励磁されＰ−Ｃポート間が開通し、圧油はＣポートよ
り弁ブロック５のｐｖ （ｃ）ｇの弁体８Ａの油路より
Ｃポートを通じてＰＶ （Ｂ）９のＰポートに流入し、
ピストン９Ａと弁体９Ｂが左方に移動しＡ−Ｃポート間
が開通する。a. When the closing command is issued, the coil 6a of the closing SV6
is energized and the communication between the P and C ports is opened, and the pressure oil flows from the C port to the P port of the PV (B) 9 from the oil passage of the valve body 8A of the valve block 5 (c) g through the C port,
The piston 9A and the valve body 9B move to the left to open communication between the A and C ports.
ｂ、油圧二二ツ）ｌの圧油は上記ＰＶ （Ｂ） ９のＡ
ＮＣポートを通じて主弁４のＡ、ＢポートとＰＶ（Ａ）
１０のＣポートに流入する。上記Ａポートに流入した圧
油は、バネ４Ｄと共にピストン４Ａを下方に押しつけ、
Ｄポートを閉じたままに保つ、Ｂポートに流入した圧油
はピストン４Ｂと弁体４Ｃを押し下げるためＣポートが
開き、蓄圧器２からの圧油は弁体４Ｃの小孔４ＦよりＣ
ポートを通じ操作シリンダ３のボア側３Ａに流入する。b, Hydraulic pressure 2) The pressure oil of l is the above PV (B) 9 A
Connect the A and B ports of main valve 4 to PV (A) through the NC port.
It flows into the C port of No.10. The pressure oil flowing into the A port presses the piston 4A downward together with the spring 4D,
The D port is kept closed. The pressure oil flowing into the B port pushes down the piston 4B and the valve body 4C, so the C port opens, and the pressure oil from the pressure accumulator 2 flows through the small hole 4F of the valve body 4C.
It flows into the bore side 3A of the operating cylinder 3 through the port.
よってボア側３Ａとロッド側３Ｂの油圧が等しくなり、
受圧面積の差により操作ピストン３Ｃは下方に移動し遮
断部１１が投入される。Therefore, the oil pressure on the bore side 3A and the rod side 3B are equal,
Due to the difference in pressure receiving area, the operating piston 3C moves downward and the shutoff part 11 is closed.
Ｃ０一方、ＰＶ（Ａ）１０のＣポートに流入した圧油は
弁体１０Ｂに設けた油路ｌＯＣを通じてＡポートからＰ
Ｖ （Ｂ）９のＢポートに流入し、ピストン９Ａと弁体
９ｂを左方に押し続け、投入状態の自己保持回路を形成
する。またＳｖ６のＣポートからの圧油は、遮断部１１
の投入完了まで作動を遅らせるための絞り１２を通りｐ
ｖ （ｃ）８のＡポートに流入し、ピストン８Ｂと弁体
８Ａをバネ８Ｃに抗して右方に移動してＰ−Ｃポート間
が閉塞し、Ｃ−Ｔポート間が開通する。よって投入用Ｓ
Ｖ６からの圧油が遮断され、ＰＶ （Ｂ）９のＰポート
の圧油はＰＶ （Ｃ）８のＣ−Ｔポートを通って油タン
クＩＡに戻る。On the other hand, the pressure oil that has flowed into the C port of the PV (A) 10 flows from the A port to P through the oil passage lOC provided in the valve body 10B.
V (B) flows into the B port of 9 and continues to push the piston 9A and valve body 9b to the left, forming a self-holding circuit in the closed state. In addition, the pressure oil from the C port of Sv6 is
P passes through the throttle 12 to delay the operation until the injection is completed.
v (c) It flows into the A port of 8, moves the piston 8B and the valve body 8A to the right against the spring 8C, closes the port between PC and opens the space between ports C and T. Therefore, S for input
The pressure oil from V6 is cut off, and the pressure oil in the P port of PV (B) 9 returns to the oil tank IA through the CT port of PV (C) 8.
ｄ、 この場合、ＰＶ （Ｃ）８の弁体１１Ａの右方へ
の移動により投入用ＳＶ６からの圧油が断たれ、アンチ
ポンプの機能が与えられる。なお投入用ＳＶ６は投入指
令が断たれて無励磁となり、バネ６Ｂにより復帰する。d. In this case, by moving the valve body 11A of PV (C) 8 to the right, the pressure oil from the injection SV 6 is cut off, and an anti-pump function is provided. Note that the closing SV6 becomes de-energized when the closing command is cut off, and is returned to its original state by the spring 6B.
次に遮断動作について説明する。Next, the shutoff operation will be explained.
ａ、遮断指令が出されると、遮断用ＳＶ７のコイル７Ａ
が励磁されてＰ−Ｃポート間が開通し、油圧ユニッ）１
の圧油はＣポートからＰＶ （Ａ）ｌＯのＢポートに流
入し、ピストンＩＯＡが弁体１０Ｂと共にバネＩＯＤに
抗して左方に移動し、Ａ−Ｃポート間が遮断されてＡ−
Ｔポート間が開通する。よって、ＰＶ （Ｂ）９のＢポ
ートからの圧油はＰＶ（Ａ）１０のＡ−Ｔポート間を通
りタンクＩＡに戻る。a. When a cutoff command is issued, the coil 7A of cutoff SV7
is excited, the P-C port is opened, and the hydraulic unit) 1
The pressure oil flows from the C port to the B port of PV (A)IO, and the piston IOA moves to the left together with the valve body 10B against the spring IOD, and the connection between the A and C ports is cut off.
Communication between T ports is opened. Therefore, the pressure oil from the B port of PV (B) 9 passes between the A and T ports of PV (A) 10 and returns to the tank IA.
ｂ、このためＰＶ （Ｂ）９のピストン９Ａと弁体９Ｂ
はバネ９Ｃにより右方に戻り、Ａ−Ｃポート間が遮断さ
れ、Ｃ−Ｔポート間が開通する。主弁４のＡ、Ｂポート
の圧油は上記Ｃ−Ｔポートを通り油タンクＩＡに戻る。b. Therefore, the piston 9A and valve body 9B of PV (B) 9
is returned to the right by the spring 9C, the A-C port is cut off, and the CT port is opened. The pressure oil in the A and B ports of the main valve 4 returns to the oil tank IA through the CT ports.
Ｃ０主弁４ではＡ、Ｂポートの圧油がなくなると、ピス
トン４Ａはバネ４Ｄに抗して上昇し、Ｄポートが開いて
操作シリンダ３のボア側３Ａは圧油がＴポートより油タ
ンクＩＡに戻り、急速に大気圧になる。よってロッド側
３Ｂの圧油が操作ピストン３Ｃを急速に押し上げ、遮断
部１１は遮断動作を行なう、遮断用ＳＶ７は遮断指令が
断たれ無励磁となり、バネ７Ｂにより復帰する。In the C0 main valve 4, when the pressure oil in the A and B ports runs out, the piston 4A rises against the spring 4D, the D port opens and the pressure oil flows from the T port to the oil tank IA on the bore side 3A of the operation cylinder 3. and quickly become atmospheric pressure. Therefore, the pressure oil on the rod side 3B quickly pushes up the operating piston 3C, and the shutoff section 11 performs a shutoff operation.The shutoff command is cut off and the shutoff SV7 becomes de-energized, and is returned by the spring 7B.
しかし、この構成では次の欠点が免れない。 However, this configuration has the following drawbacks.
１、 多数の弁が必要である（投入用および遮断用Ｓｖ
が各１個、バイロフト弁が３個、主弁が投入用、遮断用
各１個、合計７個の弁を要する）。1. A large number of valves are required (one for closing and one for shutting off)
A total of 7 valves are required: 1 for each, 3 virofft valves, and 1 main valve for closing and 1 for shutting off).
２、構成が複雑である。2. The configuration is complicated.
３、 コンパクトでない。3. Not compact.
４、コストが高い。4. Cost is high.
本発明はこれらの欠点を解消するもので、投入用および
遮断用のＳｖに大流漬のものを用い、かつ１個の主弁を
投入、遮断に兼用し弁の数を減少させることにより、構
造が簡単で低コストとする。The present invention solves these drawbacks by using a large flow Sv for closing and shutting off, and by using one main valve for both closing and shutting off, thereby reducing the number of valves. Simple structure and low cost.
第１図、第２図、第３図および第４図は本発明の実施例
の遮断、投入途中、投入および遮断途中の各状態の構成
図を示す、まず投入動作について説明する。FIGS. 1, 2, 3, and 4 are block diagrams showing each state of shutting off, mid-throwing, and mid-throwing and shutting down in an embodiment of the present invention. First, the closing operation will be explained.
ａ、装置が第１図に示す遮断状態の場合に投入指令が出
されると、大流量の投入用５Ｖ２１が励磁されて第２図
（投入途中）に示すようにＡポートが開き、蓄圧器２の
圧油が主油路２２９分岐した油通路２２Ａより上記Ａポ
ートを経て、バネ２３Ｅにより復帰状態のアンチポンプ
弁２３のＢポートより、第１図のように主油路２２から
の圧油によりバネ２４に抗して押し上げられ動作状態に
保持されていた主弁２４のパイロット圧室２４Ａに流入
する。よって弁体２４Ｂが第２図のように下降し投入状
態となり、Ｆポートが閉じＥポートが開く。a. When a closing command is issued when the device is in the cutoff state shown in Figure 1, the large flow rate closing 5V21 is energized and the A port opens as shown in Figure 2 (in the middle of closing), and the pressure accumulator 2 Pressure oil from the main oil passage 229 is transferred from the branched oil passage 22A to the A port, and from the B port of the anti-pump valve 23 which is in the reset state by the spring 23E, as shown in FIG. It is pushed up against the spring 24 and flows into the pilot pressure chamber 24A of the main valve 24, which is held in the operating state. Therefore, the valve body 24B descends as shown in FIG. 2 and enters the closing state, closing the F port and opening the E port.
ｂ、 このため、主油路２２からの圧油が主弁２４の弁
体２４Ｂの小、孔２４Ｃより操作シリンダ２５のボア側
２５Ａに流入しボア側２５Ａとロアド側２５Ｂとの油圧
が等しくなり、受圧面積の差により駆動されて第３図（
投入状態）のように操作ピストン２５Ｃが下降し、遮断
部１４は投入される。b. Therefore, the pressure oil from the main oil passage 22 flows into the bore side 25A of the operating cylinder 25 through the small hole 24C of the valve body 24B of the main valve 24, and the oil pressures on the bore side 25A and the load side 25B become equal. , driven by the difference in pressure receiving area as shown in Figure 3 (
The operation piston 25C descends as shown in the closed state), and the shutoff portion 14 is closed.
Ｃ１また、上記Ａポートからの圧油はアンチポンプ弁２
３の弁体２３Ａに設けた小孔よりなる油路２３Ｂよりピ
ストン室２３Ｃに流入し、所定時限後すなわち上記主弁
２４の動作（下降）後、弁体２３Ａはバネ２３Ｅに抗し
て左方に移動し動作状態となってＢポートを閉じ、投入
用ＳＶ２ ｔからの圧油を°遮断する。このため主弁２
４のパイロット圧室２４Ａは圧油を断たれるが、主油路
２２からの圧油は上記動作状態にある主弁２４のＥポー
トより油路２４Ｃおよびオリフィス２４Ｄを通りパイロ
ット圧室２４Ａに流入し、弁体２４Ｂを下方に押し続け
、投入状態の自己保持回路が形成される。よって、上記
アンチポンプ弁２３による５Ｖ２１からの圧油遮断と相
まってアンチポンプ機能が与えられ、投入用ＳＶ２１が
励磁されているときでも遮断可能なトリップフリーとな
る。投入用ＳＶ２１は投入指令が断たれて投入用Ｓｖが
無励磁となり、バネ２１Ｂにより復帰する。C1 Also, the pressure oil from the A port is connected to the anti-pump valve 2.
The oil flows into the piston chamber 23C from a small hole formed in the valve body 23A of No. 3, and after a predetermined time period, that is, after the main valve 24 is operated (lowered), the valve body 23A moves to the left against the spring 23E. It moves to the operating state, closes the B port, and cuts off the pressure oil from the input SV2t. Therefore, main valve 2
The pressure oil is cut off to the pilot pressure chamber 24A of No. 4, but the pressure oil from the main oil passage 22 flows into the pilot pressure chamber 24A from the E port of the main valve 24 in the operating state through the oil passage 24C and the orifice 24D. Then, the valve body 24B is continued to be pushed downward, and a self-holding circuit in the closed state is formed. Therefore, combined with the anti-pump valve 23 shutting off the pressure oil from the 5V 21, an anti-pump function is provided, and trip-free operation is achieved even when the input SV 21 is energized. When the closing command is cut off, the closing SV 21 becomes de-energized and is returned to its original position by the spring 21B.
ｄ、 なおアンチポンプ弁２３では、ピストン室２３Ｃ
の圧油は弁体２３Ａのオリフィス（小孔）２３Ｄおよび
外部の油路２６より油タンクＩＡに戻るが、上記パイロ
ット圧室２４Ａから油路２７を通じて加わる圧油により
弁体２３Ａは左方に押され動作状態のままとなり、上記
アンチポンプ機能が維持される０以上のようにして投入
動作が行なわれる。d. In addition, in the anti-pump valve 23, the piston chamber 23C
The pressure oil returns to the oil tank IA through the orifice (small hole) 23D of the valve body 23A and the external oil passage 26, but the valve body 23A is pushed to the left by the pressure oil applied from the pilot pressure chamber 24A through the oil passage 27. The anti-pump function remains in the operating state, and the closing operation is performed in a manner equal to or greater than 0 in which the anti-pump function is maintained.
次に遮断動作について説明する。Next, the shutoff operation will be explained.
ａ、第３図の投入状態で遮断指令が出されると、第４図
（遮断途中）のように大流量の遮断用５Ｖ２８のコイル
２８Ａが励磁されＤポートが開き、第３図の投入状態（
下方）にあった主弁２４のパイロット圧室２４Ａの圧油
は油路２７よりアンチポンプ弁２３のＣポートから上記
Ｄポートを通り油タンクＩＡに戻る。a. When a shutoff command is issued in the closed state shown in Figure 3, the coil 28A of the large-flow shutoff 5V 28 is energized as shown in Figure 4 (in the middle of shutoff), and the D port opens, and the closed state shown in Figure 3 (
Pressure oil in the pilot pressure chamber 24A of the main valve 24 (lower side) returns to the oil tank IA through the oil passage 27 from the C port of the anti-pump valve 23 to the D port.
ｂ、 よって、第４図（遮断途中）のように主弁２４の
弁体２４Ｂは操作シリンダ２５のボア側２５Ａの圧油に
よりバネ２４Ｈに抗して上昇し遮断状態となり、Ｅポー
トが閉じて主油通路２２からの圧油により主弁２４は弁
体２４Ｂが遮断状態（上方）に保持され、操作シリンダ
２５のボア側２５Ａの圧油はＦポートから主排油路２９
を通り油タンクＩＡに戻る。b. Therefore, as shown in Fig. 4 (in the middle of shutting off), the valve body 24B of the main valve 24 rises against the spring 24H due to the pressure oil on the bore side 25A of the operation cylinder 25, and enters the shut off state, and the E port is closed. The valve body 24B of the main valve 24 is held in a closed state (upward) by the pressure oil from the main oil passage 22, and the pressure oil on the bore side 25A of the operation cylinder 25 flows from the F port to the main drain oil passage 24.
Go through and return to oil tank IA.
Ｃ８投入状態にあった操作ピストン２５Ｃはロッド側２
５Ｂの圧油により急速に上昇し、遮断部１１は遮断動作
を行ない第１図のように遮断状態となる。なお、動作状
態（左方）にあったアンチポンプ弁２３の弁体２３Ａは
油路２７からの圧油がなくなるためバネ２３Ｈにより右
方に駆動され、弁体２３は復帰状態（右方）となる、ま
た遮断用５Ｖ２８は遮断指令が断たれ、バネ２８ｂによ
り復帰する。かくして装置は第１図の遮断状態となる。The operating piston 25C that was in the C8 closing state is on the rod side 2
It is rapidly raised by the pressure oil of 5B, and the shut-off portion 11 performs a shut-off operation and enters the shut-off state as shown in FIG. Note that the valve body 23A of the anti-pump valve 23, which was in the operating state (left side), is driven to the right by the spring 23H because the pressure oil from the oil passage 27 disappears, and the valve body 23 returns to the return state (right side). Then, the 5V 28 for cut-off is restored by the spring 28b after the cut-off command is cut off. The device is thus in the cut-off state of FIG.
このように本発明においては、投入および遮断用Ｓｖと
して大流量のものを用いることにより、従来用いていた
流量増幅用のＰＶ （Ａ）およびｐｖ （ｃ）を省略し
、かつ操作ピストンの投入。As described above, in the present invention, by using a large flow rate Sv for closing and shutting off, the conventionally used flow rate amplifying PV (A) and PV (c) are omitted, and the operation piston is not closed.
遮断双方の圧油操作を１個の主弁で行ない従来の２個の
弁体を１個としたもので、これにより弁個数の減少によ
る直接の効果のほか、装置全体をコンパクトかつ小形化
することができる。Pressure oil operations for both shutoff and shutoff are performed by one main valve, and the conventional two valve bodies are reduced to one.This not only has the direct effect of reducing the number of valves, but also makes the entire device more compact and compact. be able to.
以上説明したように本考案によるときは、１、必要とす
る弁の数が少なくなり、
２、弁口体の構造が簡単で、
３、主弁を投入用、遮断用と区別して設ける必要がなく
、１個で済み、
４、全体の構造が簡単のため、低コストで信頼性の高い
ものとなる。As explained above, according to the present invention, 1. The number of required valves is reduced, 2. The structure of the valve body is simple, and 3. It is not necessary to provide the main valve separately for closing and shutting off. 4. The overall structure is simple, resulting in low cost and high reliability.
等の効果を得ることができる。Effects such as this can be obtained.
第１図、第２図、第３図および第４図は本発明の実施例
における遮断状態、投入途中、投入状態、および遮断途
中の状態をす構成図、第５図はこの種装置の従来の構成
を示す構成図である。
１・・・油圧ユニット、ＩＡ・・・圧油タンク、ＩＣ・
・・ポンプ、２・・・蓄圧器、１１・・・遮断部、２１
・・・投入用ソレノイド弁、２２・・・主油路、２３・
・・アンチポンプ弁、２４主弁、２５・・・操作シリン
ダ、２５Ｃ・・・操作ピストン、２８・・・遮断用ソレ
ノイド弁、２９・・・主排油路。
′１ｔ）ｔ＠
オ ２ 目
才 ３ 図
オ 傘 団1, 2, 3, and 4 are block diagrams showing the shut-off state, mid-turn-on, turn-on state, and mid-shut-off state in an embodiment of the present invention, and FIG. 5 is a conventional diagram of this type of device. FIG. 2 is a configuration diagram showing the configuration of. 1... Hydraulic unit, IA... Pressure oil tank, IC.
... Pump, 2... Pressure accumulator, 11... Shutoff part, 21
... Closing solenoid valve, 22 ... Main oil path, 23.
...Anti-pump valve, 24 Main valve, 25... Operating cylinder, 25C... Operating piston, 28... Shutoff solenoid valve, 29... Main oil drain path. '1t)t@o 2 eyesai 3 figure o umbrella group
Claims (1)
と、上記圧油を蓄える蓄圧器と、投入指令により動作し
Ａポートより圧油を流出する投入用ソレノイド弁と、上
記Ａポートより圧油を加えられＢポートより流出するア
ンチポンプ弁と、上記Ｂポートからの圧油により動作し
上記蓄圧器より主油路を介して加えられる圧油をＥポー
トより小孔２４Ｃを経て操作シリンダに流入させ操作ピ
ストンにより遮断部を駆動し投入する主弁、および遮断
指令により動作し上記油タンクに接続されたＤポートを
開く遮断用ソレノイド弁とを具備し、上記アンチポンプ
弁は上記Ａポートからの圧油により動作し、上記主弁動
作に要する時限後上記Ｂポートを閉じると共にＣポート
を開き上記Ｄポートを通じて上記圧油ユニットに至る排
油通路を形成し、かつ上記主弁は上記Ｅポートから小孔
２４Ｄを通じて加えられる圧油により投入状態を保持す
ると共に上記Ｄポートの開放により遮断状態に切換わり
上記Ｅポートを閉じＦポートを開き、上記操作シリンダ
の圧油は上記Ｆポートより主排油路を経て上記油圧ユニ
ットに戻り上記遮断器は遮断され、上記アンチポンプ弁
は上記Ｅポートより分流し２４Ｄ小孔を経て加えられる
圧油により上記動作状態を保持することを特徴とする遮
断器用油圧操作器。A hydraulic unit that has a pump and an oil tank and sends out pressure oil, a pressure accumulator that stores the pressure oil, a closing solenoid valve that operates in response to a closing command and discharges pressure oil from the A port, and a closing solenoid valve that discharges pressure oil from the A port. The anti-pump valve is filled with oil and flows out from the B port, and the pressure oil that is operated by the pressure oil from the B port and is applied from the pressure accumulator through the main oil path is sent from the E port to the operating cylinder through the small hole 24C. The anti-pump valve is equipped with a main valve that drives and closes the shut-off part with an operating piston, and a shut-off solenoid valve that operates in response to a shut-off command and opens a D port connected to the oil tank. After the time required for the main valve operation, the B port is closed and the C port is opened to form an oil drainage passage leading to the pressure oil unit through the D port, and the main valve is operated by the E port. The closed state is maintained by pressurized oil applied through the small hole 24D, and the opened state is switched to the closed state by opening the D port, closing the E port and opening the F port, so that the pressure oil in the operating cylinder is discharged from the main F port. The anti-pump valve returns to the hydraulic unit via an oil path and is shut off, and the anti-pump valve is maintained in the operating state by pressure oil that is diverted from the E port and applied through the small hole 24D. Hydraulic actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61014471A JP2550519B2 (en) | 1986-01-25 | 1986-01-25 | Hydraulic actuator for circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61014471A JP2550519B2 (en) | 1986-01-25 | 1986-01-25 | Hydraulic actuator for circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62172614A true JPS62172614A (en) | 1987-07-29 |
| JP2550519B2 JP2550519B2 (en) | 1996-11-06 |
Family
ID=11861970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61014471A Expired - Lifetime JP2550519B2 (en) | 1986-01-25 | 1986-01-25 | Hydraulic actuator for circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2550519B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54147378A (en) * | 1978-05-10 | 1979-11-17 | Toyooki Kogyo Co Ltd | High speed cylinder device |
| JPS5814636U (en) * | 1981-07-22 | 1983-01-29 | 三菱電機株式会社 | hydraulic operating device |
-
1986
- 1986-01-25 JP JP61014471A patent/JP2550519B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54147378A (en) * | 1978-05-10 | 1979-11-17 | Toyooki Kogyo Co Ltd | High speed cylinder device |
| JPS5814636U (en) * | 1981-07-22 | 1983-01-29 | 三菱電機株式会社 | hydraulic operating device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2550519B2 (en) | 1996-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4065094A (en) | Hydraulic actuator | |
| KR950704617A (en) | Pressurized fluid supply system | |
| US3495501A (en) | Valve operating and emergency closing mechanism | |
| JPS62172614A (en) | Circuit breaker hydraulic pressure operating apparatus | |
| EP1281873A1 (en) | Solenoid operated spool valve for reduced energy consumption | |
| JP3538466B2 (en) | Main steam stop valve switchgear | |
| US6840258B1 (en) | Dynamically-monitored double valve with anti-tiedown feature | |
| US5476030A (en) | Hydraulic device for a hydraulic drive for a high-tension circuit-breaker | |
| US6840259B1 (en) | Dynamically-monitored double valve with retained memory of valve states | |
| JPS6318112Y2 (en) | ||
| US4073315A (en) | Valve assembly | |
| JPS6224801Y2 (en) | ||
| CN205715009U (en) | The circuit apparatus for hydraulic of well control device IBOP system delay off-load | |
| JPS6220122Y2 (en) | ||
| JPS6334194Y2 (en) | ||
| JPS6031134Y2 (en) | Control valve for hydraulic operating device | |
| JPS5926093B2 (en) | Fluid operation valve for switch | |
| CN112343876B (en) | Pressure balance self-protection hydraulic system with double hydraulic motors | |
| JPH0342245Y2 (en) | ||
| JPS5851441Y2 (en) | Logic valve operation control device | |
| JPH0743565Y2 (en) | Pilot valve device | |
| JPS58134203A (en) | Cushion device of cylinder | |
| KR850000029Y1 (en) | Actuator of a catapult | |
| JPS6235232Y2 (en) | ||
| US20060096645A1 (en) | System for direct electrically operated hydraulic control valve |