JP2016225262A - Switch - Google Patents

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JP2016225262A
JP2016225262A JP2015113714A JP2015113714A JP2016225262A JP 2016225262 A JP2016225262 A JP 2016225262A JP 2015113714 A JP2015113714 A JP 2015113714A JP 2015113714 A JP2015113714 A JP 2015113714A JP 2016225262 A JP2016225262 A JP 2016225262A
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closing
spring
motor
switch
gear train
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JP6441747B2 (en
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裕明 橋本
Hiroaki Hashimoto
裕明 橋本
大久保　健一
Kenichi Okubo
健一 大久保
裕之 中道
Hiroyuki Nakamichi
裕之 中道
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Hitachi Ltd
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Hitachi Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a switch which further improves reliability by grasping appropriate exchange timing by detecting a wear progress of a gear train even if the switch comprises a closing spring compression mechanism.SOLUTION: The switch comprises a spring manipulator with a closing spring and a breaking spring as a drive source for opening or closing a movable contact relatively to a stationary contact. The switch also comprises a wear monitoring device including: a measurement part which measures, for each time the movable contact and the stationary contact are opened or closed, a current of a motor for driving a gear train including a small gear and a large gear which are rotated by transmitting a driving force of the motor thereto; a diagnosis part for calculating the number of times of opening or closing the movable contact and the stationary contact (the number of times of manipulation) and a maximum current value of the motor based on information that has been measured by the measurement part; and a discrimination part for discriminating the wear progress of the gear train based on the maximum current value of the motor corresponding to the number of times of opening or closing the movable contact and the stationary contact (the number of times of manipulation) that has been calculated by the diagnosis part.SELECTED DRAWING: Figure 5

Description

本発明は開閉器に係り、特に、投入ばねを圧縮するギア列の摩耗を監視する摩耗監視装置を備えているものに好適な開閉器に関する。   The present invention relates to a switch, and more particularly to a switch suitable for a switch equipped with a wear monitoring device that monitors wear of a gear train that compresses a closing spring.

一般的に、開閉器、特にガス遮断器の操作器として、空気圧や油圧を利用した操作力を得る空気圧操作器や油圧操作器、或いは弾性体であるばねの圧縮力を解放することにより操作力を得るばね操作器が使用されている。また、開閉器の動作特性を監視して、異常診断を行う動作特性監視装置が提案されている。   Generally, as an operating device for a switch, especially a gas circuit breaker, an operating force is obtained by releasing the compressive force of a pneumatic operating device or a hydraulic operating device that obtains an operating force using air pressure or hydraulic pressure, or an elastic spring. A spring actuator is used to obtain In addition, an operation characteristic monitoring device that monitors the operation characteristic of a switch and performs abnormality diagnosis has been proposed.

駆動源にばね操作器を用いたガス遮断器の一例が特許文献１に記載されている。この特許文献１に記載されたばね操作器には、投入動作で解放された投入ばねを圧縮するために、モータと３段のギア列及び投入ばねリンクによる機構が示されている。そして、大歯車の欠歯部に、同期爪用弾性体を挟んで小歯車と噛み合う複数の歯を有する同期爪の一端が回動自在に支持され、同期爪の一端が同期爪用弾性体の伸縮方向の軸と略平行する長軸を有する楕円形状の回転軸孔により揺動自在に支持されていることで、投入ばねを圧縮する駆動源のモータを停止した際に、大歯車と小歯車とが如何なる位置関係にあっても、次の投入動作で投入ばねを放勢する際に、大歯車と小歯車との歯先同士が接触しても回避挙動がなされるので、安定した投入動作を得ることができる旨記載されている。   An example of a gas circuit breaker using a spring operating device as a drive source is described in Patent Document 1. In the spring operating device described in Patent Document 1, a mechanism including a motor, a three-stage gear train, and a closing spring link is shown in order to compress the closing spring released by the closing operation. Then, one end of the synchronizing claw having a plurality of teeth meshing with the small gear with the synchronous claw elastic body sandwiched between the missing teeth of the large gear is rotatably supported. When the motor of the drive source that compresses the closing spring is stopped, the large gear and the small gear are supported by an elliptical rotation shaft hole having a long axis substantially parallel to the axis in the expansion and contraction direction. No matter what the positional relationship is, when releasing the closing spring in the next closing operation, avoidance behavior will occur even if the tooth tips of the large gear and small gear contact each other, so stable closing operation It is described that can be obtained.

また、開閉器の動作特性監視装置の一例が特許文献２に記載されている。この特許文献２に記載されている開閉器の動作特性監視装置には、開閉器の動作過程（開閉方向の変位）を直接的に検出するストロークセンサを用いて動作開始時及び動作終了時を検出することにより、動作時間を高精度に監視することができる旨開示されている。   An example of a switch operating characteristic monitoring device is described in Patent Document 2. The switch operating characteristic monitoring device described in Patent Document 2 detects the start and end of operation using a stroke sensor that directly detects the operation process (displacement in the opening and closing direction) of the switch. By doing so, it is disclosed that the operation time can be monitored with high accuracy.

特開２０１４−６００１７号公報JP 2014-60017 A 特開２００８−２９３６８２号公報JP 2008-293682 A

しかしながら、特許文献１に記載されたばね操作式のガス遮断器においては、多数回操作或いは経年劣化などで投入ばね圧縮機構のギアの摩耗が進展した場合に、投入ばね圧縮動作が遅延したり、投入ばね圧縮動作が停止する可能性があり、特に、投入ばね圧縮中に停止すると、次の投入動作が不可能となる課題があった。   However, in the spring-operated gas circuit breaker described in Patent Document 1, when the wear of the closing spring compression mechanism has progressed due to many operations or deterioration over time, the closing spring compression operation is delayed or turned on. There is a possibility that the spring compression operation may stop. In particular, if the spring compression operation is stopped during the closing spring compression, there is a problem that the next closing operation cannot be performed.

一方、特許文献２に記載された開閉器の動作監視装置は、開閉操作に伴う異常を検出するものであり、投入ばねの圧縮動作に対する配慮がなされていなかった。   On the other hand, the switch operation monitoring device described in Patent Document 2 detects an abnormality associated with an opening / closing operation, and no consideration is given to the compression operation of the closing spring.

本発明は上述の点に鑑みなされたもので、その目的とするところは、投入ばね圧縮機構を有するものであっても、ギア列の摩耗進展を検出して適切な交換時期を把握し、より信頼性の高い開閉器を提供することにある。   The present invention has been made in view of the above points, and the object of the present invention is to detect the progress of wear of the gear train and grasp the appropriate replacement time even if it has a closing spring compression mechanism. It is to provide a highly reliable switch.

本発明の開閉器は、上記目的を達成するために、固定接触子と可動接触子とを有する遮断部を内蔵した接地容器と、前記可動接触子を固定接触子に対して開極又は閉極させるための投入ばね及び遮断ばねを駆動源としたばね操作器と、該ばね操作器と前記可動接触子とを連結するリンク機構部と、前記投入ばねの駆動力から前記遮断ばねを圧縮する力に変換するカムと、モータの駆動力が伝達されて回動する小歯車及び該小歯車に係合して回動する大歯車の組み合わせを少なくとも１つ有するギア列から成る投入ばね圧縮機構とを備え、前記小歯車と大歯車から成る前記ギア列を駆動する前記モータの電流を、前記可動接触子と固定接触子の開極又は閉極ごとに測定する測定部と、該測定部で測定された情報に基づいて、前記可動接触子と固定接触子の開極又は閉極回数（操作回数）及び前記モータの電流最大値を算出する診断部と、該診断部で算出された前記可動接触子と固定接触子の開極又は閉極回数（操作回数）に対する前記モータの最大電流値を基に、前記ギア列の摩耗進展を判定する判定部とから成る摩耗監視装置を更に備えていることを特徴とする。   In order to achieve the above object, the switch according to the present invention includes a grounding container having a built-in blocking portion having a fixed contact and a movable contact, and opens or closes the movable contact with respect to the fixed contact. A spring actuator having a closing spring and a cutoff spring as drive sources, a link mechanism connecting the spring operator and the movable contact, and a force for compressing the cutoff spring from the driving force of the closing spring And a closing spring compression mechanism comprising a gear train that has at least one combination of a small gear that rotates when the driving force of the motor is transmitted and a large gear that rotates by engaging with the small gear. A measuring unit that measures the current of the motor that drives the gear train composed of the small gear and the large gear for each opening or closing of the movable contact and the stationary contact, and is measured by the measurement unit. The movable contact and the fixed contact Diagnostic unit that calculates the number of times of contact opening or closing (number of operations) and the maximum current of the motor, and the number of times of opening or closing of the movable contact and the fixed contact calculated by the diagnosis unit ( The apparatus further includes a wear monitoring device including a determination unit that determines wear progress of the gear train based on the maximum current value of the motor with respect to the number of operations.

本発明によれば、投入ばね圧縮機構を有するものであっても、ギア列の摩耗進展を検出して適切な交換時期を把握することができるので、より信頼性の高い開閉器を得ることができる。   According to the present invention, even if a closing spring compression mechanism is provided, it is possible to detect the progress of wear of the gear train and grasp an appropriate replacement time, so that a more reliable switch can be obtained. it can.

本発明の開閉器の一例として、ガス遮断器の全体を一部断面して示す図である。It is a figure which partially shows the whole gas circuit breaker as an example of the switch of this invention. 本発明の開閉器の一例であるガス遮断器のばね操作器における投入ばね及び遮断ばねが圧縮状態を示す図である。It is a figure which shows a closing state and a closing spring in a spring actuator of a gas circuit breaker which is an example of a switch of the present invention. 本発明の開閉器の一例であるガス遮断器のばね操作器における遮断動作が終了して遮断ばねが放勢状態であることを示す図である。It is a figure which shows that the interruption | blocking operation | movement in the spring operating device of the gas circuit breaker which is an example of the switch of this invention is complete | finished, and the interruption | blocking spring is a release state. 本発明の開閉器の一例であるガス遮断器のばね操作器における投入動作が終了して遮断ばねが圧縮状態で投入ばねが放勢状態であることを示す図である。It is a figure which shows that the closing operation | movement in the spring operating device of the gas circuit breaker which is an example of the switch of this invention is complete | finished, a closing spring is a compression state, and a closing spring is a release state. 本発明の開閉器における投入ばね圧縮機構及び摩耗監視装置の構成を示す図である。It is a figure which shows the structure of the closing spring compression mechanism and wear monitoring apparatus in the switch of this invention. 本発明の開閉器における投入ばね圧縮動作時のモータ電流測定波形を示す特性図である。It is a characteristic view which shows the motor current measurement waveform at the time of closing spring compression operation in the switch of this invention. 本発明の開閉器における開閉操作用の電気回路を示す図である。It is a figure which shows the electric circuit for switching operation in the switch of this invention. 本発明の開閉器における開閉操作用の動作シーケンスを示す図である。It is a figure which shows the operation | movement sequence for switching operation in the switch of this invention. 本発明の開閉器における診断部に蓄積された操作回数（Ｎ）とモータ電流最大値（Ｉｍａｘ）との関係を、ギア列の摩耗進展の３ケースを例にして示す特性図である。It is a characteristic view which shows the relationship between the frequency | count of operation (N) accumulate | stored in the diagnostic part in the switch of this invention, and the motor current maximum value (Imax) for the three cases of wear progression of a gear train as an example. 本発明の開閉器における投入ばね圧縮機構のギア列の摩耗進展の３ケースの判定フローを示す図である。It is a figure which shows the determination flow of 3 cases of the wear progress of the gear train of the closing spring compression mechanism in the switch of this invention.

以下、図示した実施例に基づいて本発明の開閉器を説明する。なお、下記はあくまでも実施の例であって、発明の内容を下記具体的態様に限定することを意図する趣旨ではない。発明自体は、特許請求の範囲の記載を満たす範囲内で種々の態様に変形することが可能である。また、以下に示す実施例では開閉器として、ばね操作式のガス遮断器を挙げて説明するが、ばね操作式の真空遮断器にも適用されることは言うまでもない。更に、遮断器以外の断路器や接地開閉器にも適用可能である。   Hereinafter, the switch of the present invention will be described based on the illustrated embodiments. Note that the following are merely examples of implementation, and are not intended to limit the content of the invention to the following specific embodiments. The invention itself can be modified into various modes within the scope of the claims. In the following embodiments, a spring-operated gas circuit breaker will be described as a switch, but it goes without saying that the present invention is also applicable to a spring-operated vacuum circuit breaker. Furthermore, the present invention can be applied to disconnectors other than circuit breakers and ground switches.

図１に、本発明の開閉器として、ばね操作式のガス遮断器１を一部断面して示す。   FIG. 1 shows a partial cross section of a spring-operated gas circuit breaker 1 as a switch of the present invention.

該図に示す如く、本実施例のばね操作式のガス遮断器１は、円筒状の接地容器２を架台３上に設置され、この円筒形の接地容器２には絶縁性のガス、例えば、ＳＦ６ガスが規定の圧力で封入されている。接地容器２の軸方向中間部から斜め上方には、ブッシング４及び５が突出している。変電所や開閉所の中の電線を接続して電路を構成する導体が、ブッシング４及び５の中に収納されている。また、架台３の側部には、ガス遮断器１のばね操作器１５が収納されている操作箱６が取り付けられている。 As shown in the figure, the spring-operated gas circuit breaker 1 according to the present embodiment has a cylindrical grounding container 2 installed on a gantry 3, and an insulating gas, for example, SF 6 gas is sealed at a specified pressure. Bushings 4 and 5 protrude obliquely upward from the axially intermediate portion of the ground container 2. The conductors that connect the electric wires in the substation and the switching station to form the electric circuit are accommodated in the bushings 4 and 5. Further, an operation box 6 in which the spring operating device 15 of the gas circuit breaker 1 is housed is attached to the side of the gantry 3.

接地容器２内には、固定接触子7及び可動接触子８からなる接点が収納されており、図１は、接点の投入状態を示す。即ち、可動接触子８が固定接触子７に接しており、遮断動作で可動接触子８が固定接触子７から離れる（開極）。可動接触子８は、固定接触子７との接触端と反対側の端部で絶縁材から成る絶縁ロッド９に接続されている。接地容器２には、回転自在に支持された回転軸１０に第１のリンク１１及び第２のリンク１２の一端が固定されている。第１のリンク１１の他端は、絶縁材ロッド９の一端と接続し、第２のリンク１２の他端は、操作器側に繋がる第３のリンク１３と接続している。   In the grounding container 2, a contact made up of a fixed contact 7 and a movable contact 8 is accommodated, and FIG. 1 shows a contact state. That is, the movable contact 8 is in contact with the fixed contact 7, and the movable contact 8 is separated from the fixed contact 7 by opening operation (opening). The movable contact 8 is connected to an insulating rod 9 made of an insulating material at the end opposite to the contact end with the fixed contact 7. In the ground container 2, one end of a first link 11 and a second link 12 is fixed to a rotating shaft 10 that is rotatably supported. The other end of the first link 11 is connected to one end of the insulating rod 9 and the other end of the second link 12 is connected to a third link 13 connected to the operating device side.

操作箱６内には、回動自在に支持されたばね操作器１５の主軸１４が配置され、この主軸１４に第４のリンク１６が接続され、第４のリンク１６の他端は、第３のリンク１３に接続されている。主軸１４を中心としてばね操作器１５の部品が配置されており、その構成については後述する。なお、５９は、後述するギア列の摩耗を監視する摩耗監視装置である。   A main shaft 14 of a spring operating device 15 that is rotatably supported is disposed in the operation box 6, a fourth link 16 is connected to the main shaft 14, and the other end of the fourth link 16 is connected to the third link 16. Connected to link 13. Parts of the spring operating device 15 are arranged around the main shaft 14, and the configuration thereof will be described later. Reference numeral 59 denotes a wear monitoring device that monitors wear of a gear train, which will be described later.

このように構成されたガス遮断器１では、電流が図示を省略した電力系統からブッシング５に供給され、電流は、ブッシング５から接地容器２内の接点に導かれ、下流側のブッシング４を経て再び電力系統に供給される。   In the gas circuit breaker 1 configured as described above, a current is supplied to the bushing 5 from a power system (not shown), and the current is guided from the bushing 5 to the contact in the ground container 2 and passes through the bushing 4 on the downstream side. It is supplied to the power system again.

落雷などで電力系統に事故が発生すると、ガス遮断器１に遮断指令が入力され、ばね操作器１５が起動して、主軸１４及び第４のリンク１６を反時計回りに回転させ、第３のリンク１３を下方に移動させる。そして、第２のリンク１２及び回転軸１０、第１のリンク１１が反時計回りに回転して絶縁ロッド９を左方に移動させ、可動接触子８を固定接触子７から離して接点を開く（開極）。これにより、電力系統の下流側への供給を遮断する。   When an accident occurs in the power system due to a lightning strike or the like, a cutoff command is input to the gas circuit breaker 1, the spring operating unit 15 is activated, the main shaft 14 and the fourth link 16 are rotated counterclockwise, and the third The link 13 is moved downward. Then, the second link 12, the rotary shaft 10, and the first link 11 rotate counterclockwise to move the insulating rod 9 to the left, and move the movable contact 8 away from the fixed contact 7 to open the contact. (Open contact). Thereby, the supply to the downstream side of an electric power system is interrupted | blocked.

図２乃至図４を用いて、本実施例のガス遮断器１のばね操作器１５について説明する。   The spring operating device 15 of the gas circuit breaker 1 according to the present embodiment will be described with reference to FIGS.

図２は、ばね操作器１５の遮断ばね１７及び投入ばね１８が共に圧縮されている投入状態を示す図である。   FIG. 2 is a view showing a closing state in which the cutoff spring 17 and the closing spring 18 of the spring operating device 15 are compressed together.

図２において、圧縮された遮断ばね１７の駆動力は、主レバー１９を介して第２遮断ラッチ２０及び第１遮断ラッチ２１に伝達され、第１遮断ラッチ２１と遮断トリガ２２とが係合することで保持されている。同様に、投入ばね１８の駆動力は、カム２３を介して投入ラッチ２４に伝達され、投入ラッチ２４と投入トリガ２５とが係合することで保持されている。そして、遮断トリガ２２、投入トリガ２５に当接可能に開路用電磁石２６、閉路用電磁石２７が配置されている。   In FIG. 2, the driving force of the compressed cutoff spring 17 is transmitted to the second cutoff latch 20 and the first cutoff latch 21 via the main lever 19, and the first cutoff latch 21 and the cutoff trigger 22 are engaged. Is held by that. Similarly, the driving force of the closing spring 18 is transmitted to the closing latch 24 via the cam 23 and is held by the engagement of the closing latch 24 and the closing trigger 25. An opening electromagnet 26 and a closing electromagnet 27 are arranged so as to be able to come into contact with the cutoff trigger 22 and the closing trigger 25.

投入ばね１８の周りでは、カム軸２８の一端にカム２３が、他端には最終段（第３段目）の大歯車２９が接続されている。投入ばね１８は、リンク３０を介してカム２３に接続されている。図２の状態から投入ばね１８が解放される際には、カム２３及び第３段目の大歯車２９が反時計回りに回動し、解放された投入ばね１８を圧縮する際にも、カム２３及び第３段目の大歯車２９を反時計回りに回動させる。   Around the closing spring 18, a cam 23 is connected to one end of the cam shaft 28, and a final gear (third step) large gear 29 is connected to the other end. The closing spring 18 is connected to the cam 23 via a link 30. When the closing spring 18 is released from the state of FIG. 2, the cam 23 and the third stage large gear 29 rotate counterclockwise, and even when the released closing spring 18 is compressed, the cam 23 23 and the third stage large gear 29 are rotated counterclockwise.

図５の右半分に、投入動作で投入ばね１８が解放された状態から再び圧縮する過程でのギア列の構成を示す。   The right half of FIG. 5 shows the configuration of the gear train in the process of compression again from the state in which the closing spring 18 is released by the closing operation.

該図に示す如く、駆動源のモータ３１に締結された軸３２に第１段目の小歯車３３が接続され、第１段目の小歯車３３と第１段目の大歯車３４とで第１段目の歯車対が構成される。また、第２段目が第２段目の小歯車３５と第２段目の大歯車３６とで構成される。最終の第３段目が第３段目の小歯車３７と第３段目の大歯車２９とで構成される。なお、本実施例においては、ギア列が３段で構成されているが、２段以下でも４段以上であってもよい。   As shown in the drawing, a first stage small gear 33 is connected to a shaft 32 fastened to a motor 31 of a drive source, and a first stage small gear 33 and a first stage large gear 34 A first-stage gear pair is configured. The second stage includes a second stage small gear 35 and a second stage large gear 36. The final third stage includes a third stage small gear 37 and a third stage large gear 29. In this embodiment, the gear train is composed of three stages, but it may be two stages or less or four stages or more.

図５において、投入ばね圧縮指令がスイッチ３８に入力されると、電源３９からモータ３１への通電が開始され、ギア列５６が回転し始める。図５に示した状態から第３段目の大歯車２９及びカム２３が反時計回りに約１８０°回転すると、図示を略したリミットスイッチが作動することでモータ３１への通電が切断される。このとき、投入ばね１８は圧縮状態にあり、そのばね力が解放されようとするが、投入カム２３と投入ラッチ２４及び投入ラッチ２４と投入トリガ２５とが係合することで保持される（図２の状態）。   In FIG. 5, when a closing spring compression command is input to the switch 38, energization from the power source 39 to the motor 31 is started, and the gear train 56 starts to rotate. When the third stage large gear 29 and the cam 23 rotate about 180 ° counterclockwise from the state shown in FIG. 5, the limit switch (not shown) is activated to cut off the power supply to the motor 31. At this time, the closing spring 18 is in a compressed state and its spring force is about to be released, but is held by engaging the closing cam 23 with the closing latch 24 and the closing latch 24 with the closing trigger 25 (see FIG. 2 state).

投入ばね圧縮動作中のモータ３１の電流測定波形４０を図６に示す。通電開始時にはインラッシュ電流が流れ、通電切断時にサージ電流が発生する。また、投入ばね圧縮動作の中間（第３段目の大歯車２９及びカム２３が約９０°回転）でモータ電流が最大となる。これは、投入ばね１８の圧縮に伴い、投入ばね１８のリンク３０の姿勢が変化し、カム２３が約９０°回転した状態でカム軸２８に対して、投入ばね１８によるモーメントが最大となるためである。   FIG. 6 shows a current measurement waveform 40 of the motor 31 during the closing spring compression operation. An inrush current flows when energization is started, and a surge current is generated when the energization is cut off. In addition, the motor current becomes the maximum in the middle of the closing spring compression operation (the third stage large gear 29 and the cam 23 rotate about 90 °). This is because the posture of the link 30 of the closing spring 18 changes as the closing spring 18 is compressed, and the moment by the closing spring 18 is maximized with respect to the cam shaft 28 in a state where the cam 23 rotates about 90 °. It is.

図１に示したガス遮断器１の開閉操作について説明する。始めに、図７に示す開閉操作用の電気回路と図８に示すシーケンスを説明し、次に図２乃至図４を用いて機構の動作を説明する。   The opening / closing operation of the gas circuit breaker 1 shown in FIG. 1 will be described. First, the electrical circuit for opening and closing operation shown in FIG. 7 and the sequence shown in FIG. 8 will be described, and then the operation of the mechanism will be described with reference to FIGS.

図７に示した電気回路は、遮断部接点が切状態（固定接触子７と可動接触子８が開状態）のものであり、上位系統からガス遮断器１に閉路指令がスイッチ４１ａに入力されると、操作電源４２から閉路用電磁石２７に通電され、閉路動作が開始される。電気回路に接続された補助開閉器４３は、図示を略したリンク機構により主レバー１９（図２参照）に接続されており、開閉操作に伴う主レバー１９の回動により補助開閉器４３のａ接点４３ａ及びｂ接点４３ｂが駆動される。閉路操作では、遮断部の固定接触子７と可動接触子８が閉極する際に補助開閉器４３のｂ接点４３ｂがＯＦＦになり、補助開閉器４３のａ接点４３ａがＯＮになる。一方、開路操作では、固定接触子７と可動接触子８が開極する際に補助開閉器４３のａ接点４３ａがＯＦＦになり、補助開閉器４３のｂ接点４３ｂがＯＮになる。   The electric circuit shown in FIG. 7 is one in which the contact of the interrupting part is in a cut-off state (the fixed contact 7 and the movable contact 8 are in the open state), and a closing command is input to the gas circuit breaker 1 from the host system to the switch 41a. Then, the operation power supply 42 is energized to the closing electromagnet 27, and the closing operation is started. The auxiliary switch 43 connected to the electric circuit is connected to the main lever 19 (see FIG. 2) by a link mechanism (not shown), and the a of the auxiliary switch 43 is turned by the rotation of the main lever 19 accompanying the opening / closing operation. The contact 43a and the b contact 43b are driven. In the closing operation, the b-contact 43b of the auxiliary switch 43 is turned OFF and the a-contact 43a of the auxiliary switch 43 is turned ON when the fixed contact 7 and the movable contact 8 of the breaking unit are closed. On the other hand, in the opening operation, the a contact 43a of the auxiliary switch 43 is turned off and the b contact 43b of the auxiliary switch 43 is turned on when the fixed contact 7 and the movable contact 8 are opened.

ガス遮断器１の開路操作は、ガス遮断器１の投入状態において、開路指令がスイッチ４１ｂに入力されると開路用電磁石２６が励磁され、開路用電磁石２６のプランジャが突出し、遮断トリガ２２を押圧して、遮断トリガ２２と第１遮断ラッチ２１との係合が外れる。すると、第１遮断ラッチ２１と第２遮断ラッチ２０の係合も外れて、主レバー１９が遮断ばね１７の駆動力により反時計回りに回転して、図３に示す遮断状態となる。また、図１に示したリンク機構を介して、遮断部の固定接触子７と可動接触子８が開かれる（開極）。   The opening operation of the gas circuit breaker 1 is performed when the opening circuit command is input to the switch 41b and the opening electromagnet 26 is excited and the plunger of the opening electromagnet 26 protrudes and presses the blocking trigger 22 when the gas circuit breaker 1 is turned on. Then, the engagement between the cutoff trigger 22 and the first cutoff latch 21 is released. Then, the engagement of the first cutoff latch 21 and the second cutoff latch 20 is also released, and the main lever 19 is rotated counterclockwise by the driving force of the cutoff spring 17 to enter the cutoff state shown in FIG. Further, the fixed contact 7 and the movable contact 8 of the blocking part are opened (opening) through the link mechanism shown in FIG.

ガス遮断器１の閉路操作は、ガス遮断器１の遮断状態において、閉路指令が入力されると閉路用電磁石２７が励磁され、閉路用電磁石２７のプランジャが突出し、投入トリガ２５を押圧して、投入トリガ２５と投入ラッチ２４との係合が外れる。すると、投入ラッチ２４とカム２３との係合が外れて、カム２３が投入ばね１８の駆動力により反時計回りに回転する。そして、カム２３の回動に伴い、カム２３の外周面が主レバー１９のローラ１９ａに当接して、主レバー１９を時計回りに回転させて遮断ばね１７を圧縮しつつ、リンク機構を介して遮断部の固定接触子７と可動接触子８を投入する（閉極）。   The closing operation of the gas circuit breaker 1 is as follows. When the closing command is input in the shut-off state of the gas circuit breaker 1, the closing electromagnet 27 is excited, the plunger of the closing electromagnet 27 protrudes, and the closing trigger 25 is pressed. The engagement between the making trigger 25 and the making latch 24 is released. Then, the engagement of the closing latch 24 and the cam 23 is released, and the cam 23 rotates counterclockwise by the driving force of the closing spring 18. Then, as the cam 23 rotates, the outer peripheral surface of the cam 23 comes into contact with the roller 19a of the main lever 19 and rotates the main lever 19 clockwise to compress the shut-off spring 17 and through the link mechanism. The fixed contact 7 and the movable contact 8 of the shut-off part are inserted (closed).

なお、投入動作においては、ギア列５６の第３段目の大歯車２９が駆動側、第３段目の小歯車３７が被駆動となって駆動される。しかしながら、第３段目の小歯車３７が締結される軸４４に、図示を略した一方向歯車が接続されており、第３段目の小歯車３７からモータ３１側への第２段目には、トルクが伝達されないように構成している。   In the closing operation, the third stage large gear 29 of the gear train 56 is driven while the third stage small gear 37 is driven. However, a one-way gear (not shown) is connected to the shaft 44 to which the third stage small gear 37 is fastened, and the second stage from the third stage small gear 37 to the motor 31 side is connected. Is configured so that torque is not transmitted.

投入ばね圧縮機構におけるギア列５６の摩耗監視装置５９の構成について、図５を用いて説明する。   The configuration of the wear monitoring device 59 for the gear train 56 in the closing spring compression mechanism will be described with reference to FIG.

図５において、摩耗監視装置５９は、監視対象のガス遮断器１に対して、ギア列５６を駆動するモータ３１の電流を、可動接触子８と固定接触子７の開極又は閉極ごとに測定する測定部４５と、この測定部４５で測定された情報に基づいて、可動接触子８と固定接触子７の開極又は閉極回数（操作回数）及びモータ３１の電流最大値を算出する診断部４６と、この診断部４６で算出された可動接触子８と固定接触子７の開極又は閉極回数（操作回数）に対するモータ３１の最大電流値を基に、ギア列５６の摩耗進展を判定する判定部４７とから構成されている。   In FIG. 5, the wear monitoring device 59 applies the current of the motor 31 that drives the gear train 56 to the monitored gas circuit breaker 1 for each opening or closing of the movable contact 8 and the fixed contact 7. Based on the measurement unit 45 to be measured, and the information measured by the measurement unit 45, the number of times of opening or closing (number of operations) of the movable contact 8 and the fixed contact 7 and the maximum current value of the motor 31 are calculated. Wear progress of the gear train 56 based on the diagnosis unit 46 and the maximum current value of the motor 31 corresponding to the number of times of opening or closing (number of operations) of the movable contact 8 and the fixed contact 7 calculated by the diagnosis unit 46 It is comprised from the determination part 47 which determines.

また、ばね操作器１５のモータ３１を駆動する電気回路上には、変流器４８が設けられており、内部にシャント抵抗器を備えることでコイルへの通電電流を検出し、測定部４５に入力する。また、測定部４５には、ばね操作器１５内のストロークを測定（主軸１４の角変位を回転ポテンションメータで測定するか、或いは遮断ばね１７のリンク１７Ａ又はばね受け１７Ｂの直線変位をリニアモータポテンションメータなどで測定）するストロークセンサ４９や開路用電磁石２６内の遮断用電磁石コイル電流センサ５０、閉路用電磁石２７内の投入用電磁石コイル電流センサ５１、補助開閉器４３からの補助接点出力５２などが接続される。測定部４５に入力されたセンサの情報は、診断部４６に引き渡される。   In addition, a current transformer 48 is provided on the electric circuit that drives the motor 31 of the spring operating device 15, and a shunt resistor is provided inside to detect an energization current to the coil. input. Further, the measuring unit 45 measures the stroke in the spring operating device 15 (measures the angular displacement of the main shaft 14 with a rotary potentiometer, or measures the linear displacement of the link 17A of the cutoff spring 17 or the spring receiver 17B with a linear motor. Stroke sensor 49 to be measured with a potentiometer, etc., electromagnetic coil current sensor 50 for breaking in opening electromagnet 26, electromagnetic coil current sensor 51 for closing in closing electromagnet 27, and auxiliary contact output 52 from auxiliary switch 43 Etc. are connected. The sensor information input to the measurement unit 45 is delivered to the diagnosis unit 46.

まず、ギア列５６の異常摩耗以外の判定事例について説明する。即ち、ギア列５６の異常摩耗以外の判定は、開閉指令が入力されるタイミングを、開路用電磁石２６及び閉路用電磁石２７のコイル電流の立ち上がりから算出し、前述したストロークセンサ４９或いは補助開閉器４３などの情報（ばね操作器１５内のストロークや補助開閉器４３からの電圧出力）により、開極或いは閉極までの動作時間を診断部４６で算出して蓄積する。ガス遮断器１の操作回数の増加に伴い、開極時間の変化が微少であるにも関わらず閉極時間が単調増加する傾向が現れた場合には、判定部４７が投入動作のみに関連する投入ばね１８或いは投入カム２３など投入ばね１８の周りに異常有りと判定し、この判定結果を外部に出力する。   First, a determination example other than abnormal wear of the gear train 56 will be described. That is, for determinations other than abnormal wear of the gear train 56, the timing at which the opening / closing command is input is calculated from the rise of the coil currents of the opening electromagnet 26 and the closing electromagnet 27, and the stroke sensor 49 or the auxiliary switch 43 described above. Based on such information (stroke in the spring operating device 15 and voltage output from the auxiliary switch 43), the operation time until opening or closing is calculated by the diagnosis unit 46 and accumulated. As the number of operations of the gas circuit breaker 1 increases, if the closing time tends to monotonically increase despite a slight change in the opening time, the determination unit 47 is related only to the closing operation. It is determined that there is an abnormality around the closing spring 18 such as the closing spring 18 or the closing cam 23, and this determination result is output to the outside.

次に、投入ばね圧縮機構のギア列５６の異常摩耗の判定事例について説明する。即ち、投入ばね圧縮機構のギア列５６の異常摩耗の判定は、診断部４６において、モータ３１の電流測定波形４０から最大電流値を算出する際に、インラッシュ電流及び通電切断時のサージ電流の影響を排除するため、電流測定値に対して移動平均処理を行う。図６には、モータの電流測定波形４０と移動平均後の電流波形５３を示しており、これからモータ電流の最大値Ｉｍａｘを算出し、データを蓄積する。移動平均処理に関しては、モータ電流を、例えば、１００Ｈｚのサンプリングレートで収録した際には、１００点程度で行うとよい。   Next, a determination example of abnormal wear of the gear train 56 of the closing spring compression mechanism will be described. That is, when the diagnosis unit 46 calculates the maximum current value from the current measurement waveform 40 of the motor 31, the determination of the abnormal wear of the gear train 56 of the closing spring compression mechanism is based on the inrush current and the surge current when the current is cut off. In order to eliminate the influence, a moving average process is performed on the current measurement value. FIG. 6 shows a motor current measurement waveform 40 and a current waveform 53 after moving average. From this, a maximum value Imax of the motor current is calculated and data is accumulated. The moving average process is preferably performed at about 100 points when the motor current is recorded at a sampling rate of 100 Hz, for example.

診断部４６に蓄積されたガス遮断器１の操作回数Ｎとモータ電流の最大値Ｉｍａｘとの関係を模式的に図９に示す。本実施例においては、以下に示す３ケースを想定した。   FIG. 9 schematically shows the relationship between the number of operations N of the gas circuit breaker 1 accumulated in the diagnosis unit 46 and the maximum value Imax of the motor current. In this example, the following three cases were assumed.

ケース１は、ガス遮断器１の運転開始から操作回数が２００〜３００回程度までモータ電流の最大値Ｉｍａｘが単調増加して閾値を越える場合である。これは、ばね操作器１５の組立調整ミスなどでギアが片当りするなど噛み合いが悪い場合に相当する。   Case 1 is a case where the maximum value Imax of the motor current monotonously increases from the start of operation of the gas circuit breaker 1 to about 200 to 300 times and exceeds the threshold value. This corresponds to a case where the meshing is poor, for example, the gear hits one side due to an assembly adjustment error of the spring operating device 15 or the like.

ケース２は、操作回数が約２００〜３００回までモータ電流の最大値Ｉｍａｘが増加するが閾値以下であり、その後はモータ電流の最大値Ｉｍａｘが減少、増加を繰り返しながら閾値を越える場合である。例えば、ばね操作器１５のギアの組立状態は良好であるが、運転開始から操作回数が３００回程度までは初期摩耗があり、その後は馴染み、更に多数回操作でギア歯面の潤滑が不足して摩耗が進展する場合に相当する。   Case 2 is a case where the maximum value Imax of the motor current increases until the number of operations is about 200 to 300, but is below the threshold, and thereafter the maximum value Imax of the motor current decreases and exceeds the threshold while repeating the increase. For example, the assembled state of the gear of the spring actuator 15 is good, but there is initial wear until the number of operations is about 300 times from the start of operation, and then it becomes familiar, and the gear tooth surface is insufficiently lubricated after many operations. This corresponds to the case where wear develops.

つまり、ギア歯面に固体潤滑被膜を焼成させて、ギアを固体潤滑被膜同士摺動状態としてもギア歯先での局所的な過大接触応力により固体潤滑被膜が徐々に剥離していき、数千回の操作後に金属素地が出現する事象が想定される。金属素地同士の摺動では摩擦係数が大きく、摩耗が急速に進展することから、モータ電流の最大値Ｉｍａｘが増減を繰り返す不安定な状況になり、ついには閾値を越えると考えられる。   In other words, even if the solid lubricating film is fired on the gear tooth surface and the gear is in a sliding state between the solid lubricating films, the solid lubricating film gradually peels off due to local excessive contact stress at the gear tooth tip. It is assumed that a metal substrate appears after a number of operations. When sliding between metal substrates, the friction coefficient is large and the wear progresses rapidly. Therefore, the maximum value Imax of the motor current is unstable and repeats an increase and decrease.

ケース３は、操作回数が約２００〜３００回までモータ電流の最大値Ｉｍａｘが緩やかに増加し、その後はモータ電流の最大値Ｉｍａｘがほぼ一定値をとる場合である。この場合には、ギアの初期摩耗があるが、その後は多数回操作を行っても混合潤滑状態が保たれる場合、例えば、固体潤滑被膜の剥離が歯先の極めて限定された範囲だけに留まる場合が想定される。   Case 3 is a case where the maximum value Imax of the motor current gradually increases until the number of operations is about 200 to 300, and thereafter the maximum value Imax of the motor current takes a substantially constant value. In this case, although there is initial wear of the gear, if the mixed lubrication state is maintained even after many operations after that, for example, peeling of the solid lubricant film is limited to a very limited range of the tooth tip. A case is assumed.

操作回数の増加に伴うモータ電流の最大値Ｉｍａｘの勾配が正で、モータ電流の最大値Ｉｍａｘが閾値を越えた場合、ギア列５６の摩耗が進展したと判定部４７が決定し、ギア列５６の点検警告を外部に出力する。   When the gradient of the maximum value Imax of the motor current accompanying the increase in the number of operations is positive and the maximum value Imax of the motor current exceeds the threshold value, the determination unit 47 determines that the wear of the gear train 56 has progressed, and the gear train 56 The inspection warning is output to the outside.

以上に述べたギア列５６の摩耗進展のケース１−３について、判定のフローを示すと図１０のようになる。   FIG. 10 shows a determination flow for the case 1-3 of the progress of wear of the gear train 56 described above.

本実施例によれば、操作毎のモータ電流を測定すると共に、移動平均の最大電流値の履歴を蓄積し、操作回数に対する最大電流値の勾配及び閾値にてギア列５６の異常摩耗を判定することができるので、ギア列５６のメンテナンス時期を把握することができると共に、ガス遮断器１の信頼性を向上できる。また、ストロークセンサ４９などを用いて操作毎の開閉極時間を算出するので、投入ばね圧縮機構のギア列５６での異常と、投入ばね１８周りの機構系の異常を区別することができる。   According to the present embodiment, the motor current for each operation is measured, the history of the maximum current value of the moving average is accumulated, and the abnormal wear of the gear train 56 is determined based on the gradient and threshold value of the maximum current value with respect to the number of operations. Therefore, the maintenance time of the gear train 56 can be grasped, and the reliability of the gas circuit breaker 1 can be improved. Further, since the opening / closing extreme time for each operation is calculated using the stroke sensor 49 or the like, an abnormality in the gear train 56 of the closing spring compression mechanism and an abnormality in the mechanism system around the closing spring 18 can be distinguished.

従って、投入ばね圧縮機構を有するものであっても、ギア列５６の摩耗進展を検出して適切な交換時期を把握することができるので、より信頼性の高いガス遮断器１を得ることができる。   Therefore, even if it has a closing spring compression mechanism, it is possible to detect the progress of wear of the gear train 56 and grasp an appropriate replacement time, so that it is possible to obtain a more reliable gas circuit breaker 1. .

本実施例では、ギア列５６（図５参照）の摩耗の予兆を把握するため、図１に示すガス遮断器１の操作箱６内に振動センサ５４及び/又は騒音センサ５５を設置するものである。   In this embodiment, the vibration sensor 54 and / or the noise sensor 55 are installed in the operation box 6 of the gas circuit breaker 1 shown in FIG. 1 in order to grasp the signs of wear of the gear train 56 (see FIG. 5). is there.

図５に示すように、振動センサ５４と騒音センサ５５の出力も測定部４５に取り込む。振動センサ５４は、例えば、３軸の加速度センサであり、ギア列５６を収納するばね操作器１５の筐体に設置するとよい。また、騒音センサ５５は、操作箱６の内外の何れに設置してもよい。   As shown in FIG. 5, the outputs of the vibration sensor 54 and the noise sensor 55 are also taken into the measurement unit 45. The vibration sensor 54 is a triaxial acceleration sensor, for example, and may be installed in the housing of the spring operating device 15 that houses the gear train 56. Further, the noise sensor 55 may be installed either inside or outside the operation box 6.

ガス遮断器１の操作毎に測定部４５に入力された振動及び/又は騒音の時刻歴波形に対して診断部４６で周波数分析を行って、操作毎の卓越周波数を算出し、前回操作時のデータと比較して卓越周波数の相違を検証することで、摩耗などの異常の予兆を早期に検出することができる。   The frequency analysis is performed by the diagnosis unit 46 on the time history waveform of vibration and / or noise input to the measurement unit 45 every time the gas circuit breaker 1 is operated, and the dominant frequency for each operation is calculated. By verifying the difference in the dominant frequency compared with the data, it is possible to detect early signs of abnormalities such as wear.

このような本実施例としても、実施例１と同様な効果を得ることができることは勿論、摩耗などの異常の予兆を早期に検出することができる。   Even in this embodiment, the same effects as those of the first embodiment can be obtained, and a sign of abnormality such as wear can be detected at an early stage.

本実施例では、図５に示すように、測定部４５、診断部４６及び判定部４７の各種データを、外部通信手段５７により、開閉器の製造、販売元が運営するインターネット上のＷＥＢサイト５８に接続可能としたものである。   In this embodiment, as shown in FIG. 5, various data of the measurement unit 45, the diagnosis unit 46, and the determination unit 47 are transferred from the external communication means 57 to the WEB site 58 on the Internet operated by the manufacturer and distributor of the switch. Can be connected to.

このように構成することにより、ギア列５６の異常摩耗進展を判定する閾値の設定などを、外部通信手段５７により任意に更新することができる。また、変電所等の現地サイトに設置された投入ばね圧縮機構の摩耗監視装置用の記憶手段が物理的に故障した際に、それまでの履歴を販売元の保管しているデータにより復旧することが可能となり、摩耗監視装置の安定性が向上する。   With this configuration, it is possible to arbitrarily update the threshold setting for determining the progress of abnormal wear of the gear train 56 by the external communication unit 57. In addition, when the storage means for the wear monitoring device of the closing spring compression mechanism installed at a local site such as a substation is physically damaged, the history up to that point should be restored using the data stored by the seller. This improves the stability of the wear monitoring device.

このような本実施例としても、実施例１と同様な効果を得ることができることは勿論、摩耗監視装置の安定性が向上する。   Even in this embodiment, the same effect as that of Embodiment 1 can be obtained, and the stability of the wear monitoring device is improved.

なお、これらの実施例に示したガス遮断器１に封入する絶縁性のガスは、ＳＦ６に限定されることはなく、例えば、ＳＦ６とＮ２、ＣＦ４との混合ガスやＣＯ２ガスなどのＳＦ６代替ガスを用いても良い。 Incidentally, an insulating gas sealed in the gas circuit breaker 1 shown in these examples are not to be limited to SF 6, for example, mixed gas or CO 2 gas of SF 6 and N 2, CF 4 SF 6 alternative gas such as may be used.

また、本実施例に示したガス遮断器１のばね操作器１５では遮断ばね１７、投入ばね１８共に圧縮コイルばねを用いているが、これに限定されることはなく、皿ばねなど直動する弾性体要素であれば、容易に置換が可能である。また、主たる駆動源に圧縮コイルばねを用い、副次的な駆動源にトーションバーばねを適用しても本実施例と同様の効果が得られる。   Further, in the spring operating unit 15 of the gas circuit breaker 1 shown in the present embodiment, both the cutoff spring 17 and the closing spring 18 are compression coil springs, but the invention is not limited to this, and the plate spring or the like moves directly. Any elastic element can be easily replaced. Further, even if a compression coil spring is used as a main drive source and a torsion bar spring is applied as a secondary drive source, the same effect as in this embodiment can be obtained.

なお、本発明は上記した実施例に限定されるものではなく、様々な変形例が含まれる。例えば、上記した実施例は本発明を分かりやすく説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。また、ある実施例の構成の一部を他の実施例の構成に置き換えることが可能であり、また、ある実施例の構成に他の実施例の構成を加えることも可能である。また、各実施例の構成の一部について、他の構成の追加・削除・置換をすることが可能である。   In addition, this invention is not limited to an above-described Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

１…ガス遮断器、２…接地容器、３…架台、４、５…ブッシング、６…操作箱、７…固定接触子、８…可動接触子、９…絶縁ロッド、１０…回転軸、１１…第１のリンク、１２…第２のリンク、１３…第３のリンク、１４…ばね操作器の主軸、１５…ばね操作器、１６…第４のリンク、１７…遮断ばね、１７Ａ…遮断ばねのリンク、１７Ｂ…ばね受け、１８…投入ばね、１９…主レバー、１９ａ…主レバーのローラ、２０…第２遮断ラッチ、２１…第１遮断ラッチ、２２…遮断トリガ、２３…カム、２４…投入ラッチ、２５…投入トリガ、２６…開路用電磁石、２７…閉路用電磁石、２８…カム軸、２９…第３段目（最終段）の大歯車、３０…投入ばねのリンク、３１…モータ、３２、４４…軸、３３…第１段目の小歯車、３４…第１段目の大歯車、３５…第２段目の小歯車、３６…第２段目の大歯車、３７…第３段目の小歯車、３８、４１ａ、４１ｂ…スイッチ、３９…電源、４０…モータの電流測定波形、４２…操作電源、４３…補助開閉器、４３ａ…補助開閉器のａ接点、４３ｂ…補助開閉器のｂ接点、４５…測定部、４６…診断部、４７…判定部、４８…変流器、４９…ストロークセンサ、５０…遮断用電磁石のコイル電流センサ、５１…投入用電磁石のコイル電流センサ、５２…補助接点出力、５３…移動平均後の電流波形、５４…振動センサ、５５…騒音センサ、５６…ギア列、５７…外部通信手段、５８…ＷＥＢサイト、５９…摩耗監視装置。   DESCRIPTION OF SYMBOLS 1 ... Gas circuit breaker, 2 ... Grounding container, 3 ... Mount, 4, 5 ... Bushing, 6 ... Operation box, 7 ... Fixed contact, 8 ... Movable contact, 9 ... Insulating rod, 10 ... Rotating shaft, 11 ... 1st link, 12 ... 2nd link, 13 ... 3rd link, 14 ... Main axis of spring actuator, 15 ... Spring actuator, 16 ... 4th link, 17 ... Breaking spring, 17A ... Breaking spring Link, 17B ... Spring receiver, 18 ... Feeding spring, 19 ... Main lever, 19a ... Roller of main lever, 20 ... Second shutting latch, 21 ... First shutting latch, 22 ... Shutting trigger, 23 ... Cam, 24 ... Feeding Latch, 25 ... closing trigger, 26 ... opening electromagnet, 27 ... closing electromagnet, 28 ... camshaft, 29 ... third gear (final stage) large gear, 30 ... closing spring link, 31 ... motor, 32 44 ... shaft 33 ... first stage small gear 34 ... first stage Gears 35 ... Second stage small gears 36 ... Second stage large gears 37 ... Third stage small gears 38, 41a, 41b ... Switches 39 ... Power supply 40 ... Motor current measurement Waveform, 42 ... Operating power supply, 43 ... Auxiliary switch, 43a ... A contact of the auxiliary switch, 43b ... B contact of the auxiliary switch, 45 ... Measurement unit, 46 ... Diagnostic unit, 47 ... Determination unit, 48 ... Current transformation 49 ... stroke sensor, 50 ... coil current sensor for breaking electromagnet, 51 ... coil current sensor for making electromagnet, 52 ... auxiliary contact output, 53 ... current waveform after moving average, 54 ... vibration sensor, 55 ... noise Sensors 56... Gear train 57. External communication means 58. WEB site 59. Wear monitoring device.

Claims (8)

固定接触子と可動接触子とを有する遮断部を内蔵した接地容器と、前記可動接触子を固定接触子に対して開極又は閉極させるための投入ばね及び遮断ばねを駆動源としたばね操作器と、該ばね操作器と前記可動接触子とを連結するリンク機構部と、前記投入ばねの駆動力から前記遮断ばねを圧縮する力に変換するカムと、モータの駆動力が伝達されて回動する小歯車及び該小歯車に係合して回動する大歯車の組み合わせを少なくとも１つ有するギア列から成る投入ばね圧縮機構とを備え、
前記小歯車と大歯車から成る前記ギア列を駆動する前記モータの電流を、前記可動接触子と固定接触子の開極又は閉極ごとに測定する測定部と、該測定部で測定された情報に基づいて、前記可動接触子と固定接触子の開極又は閉極回数（操作回数）及び前記モータの電流最大値を算出する診断部と、該診断部で算出された前記可動接触子と固定接触子の開極又は閉極回数（操作回数）に対する前記モータの最大電流値を基に、前記ギア列の摩耗進展を判定する判定部とから成る摩耗監視装置を更に備えていることを特徴とする開閉器。 Spring operation using a grounding container with a built-in blocking portion having a fixed contact and a movable contact, and a closing spring and a blocking spring as a drive source for opening or closing the movable contact with respect to the fixed contact , A link mechanism for connecting the spring operating device and the movable contact, a cam for converting the driving force of the closing spring into a force for compressing the shut-off spring, and the driving force of the motor being transmitted. A closing spring compression mechanism comprising a gear train having at least one combination of a small gear that moves and a large gear that engages and rotates with the small gear;
A measurement unit that measures the current of the motor that drives the gear train composed of the small gear and the large gear for each opening or closing of the movable contact and the stationary contact, and information measured by the measurement unit And a diagnostic unit that calculates the number of times of opening or closing (number of operations) of the movable contact and the fixed contact and the maximum current of the motor, and the movable contact and the fixed calculated by the diagnostic unit It further comprises a wear monitoring device comprising a determination unit for determining the progress of wear of the gear train based on the maximum current value of the motor with respect to the number of times of opening or closing the contact (number of operations). Switch to be used. 請求項１に記載の開閉器において、
前記診断部は、モータ電流の測定波形に対して、移動平均化処理を行ってインラッシュ電流並びに通電切断時のサージ電流の影響を除去した電流波形を算出するものであることを特徴とする開閉器。 The switch according to claim 1, wherein
The diagnostic unit performs a moving averaging process on the measured waveform of the motor current to calculate a current waveform from which the influence of the inrush current and the surge current at the time of cutting off the current is removed. vessel. 請求項１又は２に記載の開閉器において、
前記判定部では、前記モータの電流最大値が単調増加して閾値を越えた場合には、前記ギア列の噛み合いが悪いと判定し、前記モータの電流最大値が増加するが閾値以下であり、その後は前記モータの電流最大値が減少、増加を繰り返しながら閾値を越えた場合には、初期摩耗があり、その後は馴染み、更に多数回操作で前記ギア列の歯面の摩耗が進展していると判定し、前記モータの電流最大値が緩やかに増加し、その後は前記モータの電流最大値が一定値をとる場合には、前記ギア列の初期摩耗はあるが、その後は多数回操作を行っても、摩耗は前記ギア列の歯先の限定された範囲であると判定することを特徴とする開閉器。 The switch according to claim 1 or 2,
In the determination unit, when the maximum current value of the motor monotonously increases and exceeds a threshold value, it is determined that the meshing of the gear train is poor, and the maximum current value of the motor increases, but is below the threshold value, Thereafter, when the motor current maximum value decreases and increases and exceeds the threshold while repeating, there is initial wear, and after that, the wear becomes familiar, and wear of the tooth surface of the gear train progresses after many operations. If the maximum current value of the motor gradually increases and then the maximum current value of the motor takes a constant value, there is initial wear of the gear train. Even so, it is determined that the wear is in a limited range of the tooth tips of the gear train. 請求項１又は２に記載の開閉器において、
前記判定部では、前記可動接触子と固定接触子の開極又は閉極回数（操作回数）の増加に伴う前記モータの電流最大値の勾配が正で、前記モータの電流最大値が閾値を越えた場合には、前記ギア列の摩耗が進展したと判定し、前記ギア列の点検警告を外部に出力することを特徴とする開閉器。 The switch according to claim 1 or 2,
In the determination unit, the gradient of the maximum current value of the motor with an increase in the number of times of opening or closing (number of operations) of the movable contact and the fixed contact is positive, and the maximum current of the motor exceeds a threshold value. A switch that determines that wear of the gear train has progressed and outputs an inspection warning of the gear train to the outside. 請求項１又は２に記載の開閉器において、
前記測定部には、前記ばね操作器内のストロークを測定するストロークセンサ、開路及び閉路用電磁石のコイル電流を測定する電流センサ、補助開閉器の補助接点からの電圧出力が接続されていることを特徴とする開閉器。 The switch according to claim 1 or 2,
The measurement unit is connected to a stroke sensor for measuring a stroke in the spring operating device, a current sensor for measuring a coil current of an opening and closing electromagnet, and a voltage output from an auxiliary contact of an auxiliary switch. Features a switch. 請求項５に記載の開閉器において、
前記開路及び閉路用電磁石のコイル電流の立ち上がりから開閉指令が入力されるタイミングを算出し、前記ばね操作器内のストロークを測定するストロークセンサ、前記開路及び閉路用電磁石のコイル電流を測定する電流センサ、或いは前記補助開閉器の補助接点からの電圧出力の情報により、開極或いは閉極までの動作時間を前記診断部で算出して蓄積し、前記可動接触子と固定接触子の開極又は閉極回数（操作回数）の増加に伴い、開極時間の変化が微少であるにも関わらず閉極時間が単調増加する傾向が現れた場合には、前記投入ばねの周りに異常有りと前記判定部で判定し、その判定結果を外部に出力することを特徴とする開閉器。 The switch according to claim 5, wherein
A stroke sensor that calculates the timing at which an opening / closing command is input from the rise of the coil current of the open and close electromagnets and measures the stroke in the spring actuator, and a current sensor that measures the coil current of the open and close electromagnets Alternatively, based on the information on the voltage output from the auxiliary contact of the auxiliary switch, the operation time until the opening or closing is calculated and accumulated by the diagnostic unit, and the movable contact and the stationary contact are opened or closed. If there is a tendency for the closing time to monotonously increase with the increase in the number of poles (number of operations), even though the change in the opening time is slight, the judgment is made that there is an abnormality around the closing spring. The switch characterized by determining with a part and outputting the determination result outside. 請求項１に記載の開閉器において、
前記ばね操作器の筐体に振動センサ及び/又は前記ばね操作器の内外に騒音センサを備え、前記投入ばねの圧縮動作中の前記ばね操作器の筐体の振動及び/又は前記ばね操作器の内外の操作音を測定して前記測定部に入力し、該測定部に入力された前記振動及び/又は前記操作音の時刻歴波形に対して周波数分析を前記診断部で行って操作毎の卓越周波数を算出し、この卓越周波数と前回操作時の結果と比較して前記卓越周波数の相違を検証することで異常の予兆を検出することを特徴とする開閉器。 The switch according to claim 1, wherein
A vibration sensor and / or a noise sensor inside and outside the spring operator are provided in the case of the spring operator, and vibrations of the case of the spring operator during the compression operation of the closing spring and / or Measuring internal and external operation sounds and inputting them to the measurement unit, and performing frequency analysis on the time history waveform of the vibration and / or the operation sounds input to the measurement unit to perform excellent operation for each operation. A switch that detects a symptom of abnormality by calculating a frequency and comparing a difference between the dominant frequency and a result of previous operation to verify the difference between the dominant frequencies. 請求項１に記載の開閉器において、
前記測定部、前記診断部及び前記判定部からのデータは、外部通信手段を介して前記開閉器の製造及び/又は販売元が運営するインターネットのＷＥＢサイトに接続可能であることを特徴とする開閉器。 The switch according to claim 1, wherein
Data from the measurement unit, the diagnosis unit, and the determination unit can be connected to an Internet WEB site operated by a manufacturer and / or distributor of the switch via external communication means. vessel.
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107816934A (en) * 2017-12-04 2018-03-20 中国南方电网有限责任公司超高压输电公司昆明局 A kind of breaker hydraulic disk spring mechanism disc spring decrement self-operated measuring unit
CN109307594A (en) * 2018-09-28 2019-02-05 嘉兴正野新材料有限公司 A kind of anti-wear detection device of motor gear
CN110911220A (en) * 2019-12-05 2020-03-24 蚌埠普源电气科技有限公司 Manual opening and closing spring operating mechanism and vacuum circuit breaker thereof
CN113053694A (en) * 2021-03-08 2021-06-29 湖北民族大学 Vacuum circuit breaker main shaft speed measurement modularization transmission
CN115407111A (en) * 2022-08-17 2022-11-29 捷群电子科技(淮安)有限公司 Surge-resistant resistor bearing current detection device and detection method thereof
WO2023112266A1 (en) * 2021-12-16 2023-06-22 株式会社東芝 Status-monitoring system for circuit breaker spring-operating mechanism, and monitoring method for circuit breaker spring-operating mechanism

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102293128B1 (en) * 2020-10-15 2021-08-25 주식회사 무하기술 Relay Performance Test System

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007212719A (en) * 2006-02-09 2007-08-23 Fuji Xerox Co Ltd Failure diagnostic device and image forming apparatus
JP2007242597A (en) * 2006-02-07 2007-09-20 Hitachi Ltd Gas-blast power-breaker
JP2008159537A (en) * 2006-12-26 2008-07-10 Toshiba Corp Electric spring operation mechanism for switching unit, abnormality monitoring method of switching unit, abnormality monitoring device and switching unit
JP2012130141A (en) * 2010-12-14 2012-07-05 Chugoku Electric Power Co Inc:The Monitoring device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007242597A (en) * 2006-02-07 2007-09-20 Hitachi Ltd Gas-blast power-breaker
JP2007212719A (en) * 2006-02-09 2007-08-23 Fuji Xerox Co Ltd Failure diagnostic device and image forming apparatus
JP2008159537A (en) * 2006-12-26 2008-07-10 Toshiba Corp Electric spring operation mechanism for switching unit, abnormality monitoring method of switching unit, abnormality monitoring device and switching unit
JP2012130141A (en) * 2010-12-14 2012-07-05 Chugoku Electric Power Co Inc:The Monitoring device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107816934A (en) * 2017-12-04 2018-03-20 中国南方电网有限责任公司超高压输电公司昆明局 A kind of breaker hydraulic disk spring mechanism disc spring decrement self-operated measuring unit
CN107816934B (en) * 2017-12-04 2024-04-09 中国南方电网有限责任公司超高压输电公司昆明局 Automatic measuring device for disc spring compression amount of hydraulic disc spring mechanism of circuit breaker
CN109307594A (en) * 2018-09-28 2019-02-05 嘉兴正野新材料有限公司 A kind of anti-wear detection device of motor gear
CN109307594B (en) * 2018-09-28 2024-04-26 浙江海天机械有限公司 Abrasion-proof detection device for motorcycle gear
CN110911220A (en) * 2019-12-05 2020-03-24 蚌埠普源电气科技有限公司 Manual opening and closing spring operating mechanism and vacuum circuit breaker thereof
CN113053694A (en) * 2021-03-08 2021-06-29 湖北民族大学 Vacuum circuit breaker main shaft speed measurement modularization transmission
CN113053694B (en) * 2021-03-08 2022-07-26 湖北民族大学 Vacuum circuit breaker main shaft speed measurement modularization transmission
WO2023112266A1 (en) * 2021-12-16 2023-06-22 株式会社東芝 Status-monitoring system for circuit breaker spring-operating mechanism, and monitoring method for circuit breaker spring-operating mechanism
JP7467781B2 (en) 2021-12-16 2024-04-15 株式会社東芝 System for monitoring condition of circuit breaker spring operating mechanism, and method for monitoring circuit breaker spring operating mechanism
CN115407111A (en) * 2022-08-17 2022-11-29 捷群电子科技(淮安)有限公司 Surge-resistant resistor bearing current detection device and detection method thereof
CN115407111B (en) * 2022-08-17 2024-04-19 捷群电子科技(淮安)有限公司 Anti-surge resistor bearing current detection device and detection method thereof

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