TW579534B - Gas insulating switch device - Google Patents

Abstract

The present invention discloses a gas insulating switch device 100 having a vacuum valve 1, wherein the vacuum valve 1 comprises a vacuum container 2 with vacuum therein, a fixed electrode 3 and a movable electrode 4 disposed in the vacuum container 2, and the movable electrode 4 is disposed in such a manner that is movable towards and backwards from the fixed electrode 3. The vacuum valve 1 turns on or off the electric current of a bus line connected to both the fixed electrode 3 and the movable electrode 4 by connecting or separating the fixed electrode 3 and the movable electrode 4. The gas insulating switch device 100 further comprises a gas-sealed container 10, which has gas sealed inside and receives the vacuum valve 1 therein, and an extended rod 9 with one end connected to the movable electrode 4 and the other end extended outside the gas-sealed container 10. Furthermore, an electromagnetic operation mechanism 12 having an output shaft 21, which is provided outside the gas-sealed container 10 and connects the other end of the extended rod 9 while being activated by an electric signal from outside, and electromagnetic coils 18, 19, which turn on or off the vacuum valve 1 while driving the output shaft 21 by electromagnetic force, is comprised.

Description

579534 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a gas-insulated switchgear, especially a gas-insulated switchgear provided with a plurality of vacuum chambers in a gas-tight container sealed with an insulating gas. [Prior art] In the conventional gas-insulated switchgear, a fixed electrode and a movable electrode moving forward and backward toward the fixed electrode are provided in a vacuum container, and current is conducted and cut by contacting / separating the fixed electrode and the movable electrode. The broken vacuum chamber is housed in a gas-tight container sealed with an insulating gas such as sulfur hexafluoride (SF 6). The movable electrode of the vacuum chamber is operated by a lever, a connecting rod, a connecting shaft, and the like. Transmission mechanism so that it can be connected to a manual operation lever (for example, refer to Japanese Patent Laid-Open No. 0 2-2 5 7 5 3 6 (pages 1 to 2; FIG. 2)). Furthermore, for example, in a conventional gas-insulated switchgear using a three-phase AC circuit breaker, three vacuum chambers are generally provided. The three vacuum chambers are arranged in parallel, and a movable electrode for connecting the vacuum chambers is provided. The interlocking mechanism of the connecting shaft causes the three vacuum chambers to operate simultaneously (for example, refer to Japanese Patent Laid-Open Nos. 2000- 2 8 3 3 2 0). In addition, the purpose of providing a bellows in such a gas-insulated switchgear is that between the movable electrode and the wall surface of the gas-tight container in a portion where the movable electrode of the vacuum chamber projects through the wall surface of the gas-tight container, The two electrodes are sealed so as not to prevent the movable electrode from moving forward and backward (for example, refer to Japanese Patent Laid-Open No. 0 2-2 5 7 5 3 6 (page 1-2, FIG. 2)).

314283.ptd Page 10 V. Description of the invention (2) I In the conventional structure of the above-mentioned conventional MV: a movable electrode insulated switchgear for a vacuum chamber, a force transmission mechanism H is connected to a cow, a connecting rod, a connecting shaft, etc. In the structure of the operating force transmission mechanism: == the purpose of miniaturization of the device, and ί, :: large, and in addition to the energy loss in the connection part of the connecting part of the connecting rod 2 to transmit operating energy. : The friction generated, and in addition, because S's lies in the best question. : The conventional gas using the expansion bag is tightly sealed, so in the weak 'especially for the torsion direction: f is set, the expansion bag is extremely brittle and very careful, resulting in poor workability = weak' The assembly must be adjusted in order to solve the problem The above-mentioned questions about gas supply-a kind of gas-insulated switchgear4, the complex: the purpose is to improve energy consumption while reducing the operating force1 to miniaturized, lightweight capsular, but also improve assembly workability, consumption, Moreover, even if the extension of the invention is used] I The gas-insulated switch of the present invention is provided in a vacuum chamber for a taxi > a vacuum chamber with a vacuum inside is provided in the empty chamber of the taxi. There is a vacuum chamber, and a fixed electrode in the container. It can be moved with the moving electrode, and it can be moved forward and backward toward the fixed electrode. Vacuum; the moving electrode system is set, the 2 electrodes are in contact / separation to electrically connect the two f by the fixed electrode. It is turned on and off dynamically with the gas insulation and edge switch. It is equipped with the ancient mother wire and wire that carry current, and the gas-tight container that contains the vacuum chamber; Extending outside the gas-tight container Two j :: 连 =: j Electromagnetic operation mechanism, its system includes: It is arranged at $ 彳, and ^ and

314283. ptd page 11 ^ 79534 Five borrowed invention descriptions (3) __ U: External electronic signals to actuate the shaft, and operate the coil by connecting the other end of the extension rod with electromagnetic force. Therefore, it is possible to reduce = the output shaft to open and close the rods, connecting rods, and links connected to the vacuum chamber = to reduce the size and weight of the operating force transmission mechanism and reduce the weight of the movable electrode device in the vacuum chamber. The purpose of the link department Feng Feng. In addition, the friction loss caused by the rotating members such as the connecting rods has been eliminated, and the operating force is also eliminated, and the operating force is eliminated; the shield can be made to transmit efficiently. [Embodiment] The source efficiency Best device. First Embodiment The first figure is a corpse insulated switchgear 100 of the gas-insulated switchgear of the present invention, which is provided with-and σ diagrams. Rolling room 1. Zhikong Palace m Zhigu Guguang π 仃 A vacuum that is turned on and off by the electric current. The vacuum container 21 is fixed to the electrode 3 and the movable electrode 4. The fixed electrode 3 is a side split 2 a fixed on the 2-side of Dangkongguzhai. & E m λ * Eight electrodes 3 are electrically conductive ^ A main circuit bus (not shown) and the fixed movable electrode 4 are arranged to face the fixed electrode 3. The movable electrode 4 is provided so as to be able to move forward and backward freely and penetrate the side wall of the other side of the vacuum container 2. A telescopic bag 5 is provided at a portion penetrated by the movable electrode 4 of the side wall 2b. The expansion and contraction capsule 5 seals the movable electrode 4 and the side wall 2b of the vacuum container 2 in a flexible manner. In order to cause the electric fox generated at the time of cutting to diffuse and extinguish arc as soon as possible, the inside of the vacuum container 2 is kept in a vacuum state. The movable electrode 4 moves the fixed electrode 3 forward and backward to move the fixed contact 3a provided at the front end of the fixed electrode 3 and the movable electrode 4 provided at the front end of the movable electrode 4.

579534 Five connection solid pressure, description of the invention (4) '— ___ The contact 4a is separated / contacted, and the chamber is opened. The fixed contact 3a plate can be pulled and moved. An elastic yellow 6 is disposed at the end of the movable electrode 4 to withstand the elastic yellow. The pressure springs are connected to the ends of the movable electrode 4 Qiu a l 〃 6 series between the retaining plate 7 and the insulating rod 8 connected to the 4 and 4 terminals. 4 L, π 1 protrudes from the insulating rod 8 in the direction of the vacuum chamber 丨 and has a retaining plate 7 =: a small hole: and is restricted by the screw portion fixed to the shaft center J = to prevent the chip M 8b from falling off . After narrowing, the buckled headstock 8 can only be used on the shaft member 8: = the amount of elongation of the insulation compression spring 6. The insulating rod 8 is enclosed in a container 10 with a potential of Γ. Gas Songmen;! Edge 8 and buckle plate 7 are housed in gas-edge gas. In the gas-tight container 10, an insulating substrate " medium gas: " medium: =: 20 side walls constitute a substrate " is enclosed. The extension rod 9 of the insulating rod 8 extends the opening Ua. One end is connected to the outside, and the other end is extended through the extension opening 1a. Operation: Ϊ2: Ϊ: The bubu is provided with an electromagnetic operation mechanism 12. Electromagnetic brace. The electric U extends two supporting members 15 and supports the magnet u. ΓΓί τ is first attached to a vacuum chamber 1 side having a cylindrical permanent first electromagnetic coil 18 and a long-lasting water 16 iron 16 in the center, a ring-shaped magnet 1 6-phase, a Kola eight central axis, and a permanent magnet 16-phase Consistent with the permanent configuration f 1. At the same time, on the opposite side of the permanent magnet 16, the second electromagnetic coil 19 formed in the same manner has its central axis aligned with the permanent magnet 16

579534 V. Description of the invention (5) To the outside and the long magnet 16 are arranged next to each other. In order to arrange the above-mentioned arrangement, the === long magnet 16, the first electrode coil 18, and the second electrode coil 19 are provided with a cylindrical movable member 20 that can move in the axial direction. The output shaft 21 penetrates and is fixed to the central axis plate circle ΪΪ1 of the movable member 20. The electrode coil M is located on the side of the vacuum chamber 1 and is provided side by side with a thick ΠΪΐ: on the other hand, between the second electrode and the second electrode. The coil 19: surface; LI: I are also provided side by side with a thick plate and a circular plate-shaped first and mt out # system, which can move forward and backward freely through the first yoke portion 22 yoke-heart: center? L. The movable member 20, the first yoke portion 22, and the second w.卩 2 3 series are made of iron. The on-line electrical mechanism 12, the vacuum chamber 1 and the extension rod 9 are arranged at the output # 21 of the same operating mechanism 12 and the extension rod 9, which are connected by the long Hai: Yes; ΪΓ and mouth. The length adjustment mechanism 24 spit toward the jit 2 end inside the cylinder. For the length adjusting mechanism 24, if the extension rod 9 is set in advance :: Rotate: The extension rod 9 is moved axially m ^ ^, yi, xiang 8 and the vacuum chamber 1 in order to leave the output shaft 2 i. Will shorten. In addition, the needle = mechanism ... If the extension rod 9 is rotated in the opposite direction, the output is enlarged by one. As a result, the distance between the insulating rod 8 and the vacuum chamber 1 is fixed. On the extension opening 113 of the bottom plate 11, there is a round-shaped guide 25 along the axis of the extension rod 9. The extension rod 9 is slowly guided in the axial direction by the guide 25. Further, a bellows 26 is provided on the outer periphery of the guide 25.

579534 V. Description of the invention (6) Figure 2 is a detailed perspective view showing the expansion bag 26. Expansion bladder 2 6 series =: bellows-shaped telescopic portion 26a; an outer diameter flange portion 2 6b formed at the end of the vacuum chamber 1 side of the telescopic portion 26a and expanding from the open end to the outer diameter direction; And an inner diameter flange portion 2 6 c formed at an end 1 ′ on the opposite side of the vacuum chamber 1 of the telescopic portion 26 a and gradually narrowing toward the internal control direction. The extension bag 2 6 is fixed by sandwiching the outer diameter flange portion 2 6b between the pressing plate 27 and the bottom plate 丨 丨. Further, the pressing plate 27 is fastened with a nut 29 to a male screw 28 provided upright on the taxi 11. In addition, the inner diameter flange portion 26c seals the gap between the extension hole 9 and the center hole of the tooth. That is, the expansion bladder 26 is provided between the outer peripheral portion of the extension rod 9 and the + peripheral portion of the extension opening 11a of the gas-tight container 1, so that the extension rod 9 is closed so as not to hinder the forward and backward movement of the extension rod 9, That is, a gas seal is performed. The bellows-shaped telescopic portion 2 6 a is extended and contracted with a very small force. Back. Figure 1. Vacuum chamber with compression spring 6, insulation rod 8, buckle plate 7, electromagnetic operating mechanism 12, length adjustment mechanism 24, and telescopic bladder 26. f Opening and closing unit (switching㈣⑴, and gas-insulated switch Two 1 0 0 side-by-side β and a fine switch unit for controlling three-phase alternating current. The electromagnetic operating mechanism 12 provided in each switch unit is operated by an external electric signal: for example, 3 vacuums The chambers are opened and closed at the same time with a slight time shift between each two to one. One method is to adjust it with the length adjustment mechanism 24. In this way, the gas-tight container 10 of this embodiment is external, and by action, And the electromagnetic operating edge switch device 1 0 0 is configured because it is equipped with an electronic signal from the outside.

314283. ptd page 15 ^ / ^ 34 Description of the invention (7) Mori Seiki g ΠΛ'21 and the output shaft 21 are driven by electromagnetic force to open and close straight. * Medi 2 solenoid coils 18, 19, so you can reduce the past ^ = ^ To 1 of the movable electrode 4 connected rods,-: operating force transmission mechanism, so that the device can reach: type; = the structure of the Si can eliminate the existing operating force transmission knives. In this case, Long can also eliminate ° wrestling caused by rotating components such as connecting rods; ^; Therefore, it is possible to create a device that can efficiently communicate the operating force and also the energy efficiency value in terms of "character force." It controls the three phases. AC currents are installed side by side in 3 straight empty rooms 2: The linked U-Technique is used to make 3 real, room-linked and 'existing by the conventional knowledge: the purpose of fization, & The energy consumption can be produced J ::, and the energy chamber can be further-eliminated. The structure of the energy chamber can be eliminated, that is, the vacuum system must be arranged in parallel as in this embodiment. To 1 'Therefore, the limit of the device shape can be reduced and' The thin t-line of the movable electrode 4 does not require a conventional connection between the vacuum chamber and: the axis of the output # 21 is on the same-straight rod, connecting shaft The rods and connecting devices of the movable electrode 4 constitute a miniaturized and light-weight transmission mechanism, and can further improve the purpose of the inside. Ran Zhe's extension;): Dr. Sun ^: ^ upper, extension opening lla extends to the outside, = ^ extends the opening 10 of the extension container 10 on the wall surface of the gas-tight container 10, and the outer circumference of the long rod 9 and the gas-tight moon 4 and the elephant 4 are provided so as not to hinder the extension.

^ / ^ 534 V. Description of the invention (8) The method of moving the long rod 9 forward and backward is to seal the space between them to perform a gas seal of the expansion and contraction bag 26, so the resistance of the extension rod 9 when moving forward and backward is extremely small. , So that the operation error of the vacuum chamber 丨 is reduced. In addition, as shown in the implementation, when a plurality of vacuum chambers are provided, operation errors between the vacuum chambers 1 are also reduced. 2 to explain the operation. The magnetic wire f ^ of the electromagnetic operation mechanism 12 is excited by the externally supplied electric power, and the electric power generated by the electromagnetic coil 18 is generated by the electromagnetic force to attract the movable member 2G. With this, the movable member Γ: ί i / Λ head a direction of movement! . Then, the suction of the first electromagnetic coil 18 is equal to 3 = τ: 2 1 and the vacuum chamber 1 is pushed by the side, thereby fixing the vacuum chamber 1 Ϊ Ϊ contact * to close the vacuum chamber 1. At this time, it is contracted by a predetermined length to withstand a predetermined contact load on the fixed contact with the movable contact 4a. _ — When the mountain is movable and the member 20 moves to the closed position side, the true member 20 of the movable member 20 is connected to the first yoke portion 22 at a slight distance. A magnetic circuit is formed when the path that can be connected to 20 0 ill = is reached, because the magnetic circuit attracts the yoke 22. Since the attractive force is higher than that of the compression spring Dosuke Miyasuke, even if the excitation of the first electromagnetic coil 18 disappears, the vacuum to 1 can be kept closed. On the other hand, scratching the clams: 1 The second electromagnetic coil 19 of the electromagnetic operating mechanism 12 2 is excited by the force of the outer thunder i, and the second electromagnetic coil 19 generates an electromagnetic force, and the movable member is attracted by = Λ-shift- 20. Thereby, the attraction force of the movable member 20 toward the arrow B in FIG. 1, and the second electromagnetic coil 19 is better than that of the movable member.

314283.ptd 579534 -——. V. Description of the invention (9) The opposite side between the 20 and the first yoke 22 attracts, this time Shizla 'and the wheel exit shaft 21 is extended toward straight air | The crimping spring 6 is subject to the buckle plate 7: elongation from 1 to 1, and because the elongation ratio is movable and is limited to the predetermined fixed contact to the large contact, it is really open. j The moving contact 4a will be isolated, so that the vacuum chamber worker will take the position of the moving part 20, and the end face on the opposite side of the open position is 2 to 1.] The true part of the strength part 20 is connected to the movable part 20, ± -The yoke approaches the second yoke 23 apart. Part 20 to the first dagger: at 23 o'clock, a magnetic circuit is formed by the path from the permanent magnet 16 to the movable Γ ▲, which is attracted by the magnetic circuit M :? Therefore, even if the second permanent magnetic coil disappears thereafter, the vacuum chamber 1 can be maintained in the open state. The 2 °, the consumable part 22 and the second crotch part 23 are connected with the opening & t 0 7 force to maintain the vacuum chamber 1 in the closed position. The Shuijiu magnet holding device is placed on it. The electromagnetic two i machine is an example: In the edge switch device 100, the pole 4 is pressed to the closed position w ^, and the movable electric power of the vacuum chamber 1 is output by the output shaft 21. The electrode coil 18 springs toward the open position; and the movable electric coil 19 which moves the movable electrode empty chamber ί, so when the true movement is made, the movement is stabilized when the / 4 is moved to the closed position side, or the open position side is stable And the reliability is improved. Straighten :: T series machine 1 and 2 series act on the output shaft 2 and have two positions: the water and iron holding device for the electrode 4 in the closed position and the open position. 'So with a permanent magnet 16 can move the electrode

579534 V. Description of the invention (ίο) ----- 4 The mechanism is maintained in the closed position and the open position, and the purpose of maintaining the reduced structure can be achieved. Permanent magnets that reduce the number of components, reduce costs, and reduce the size. As early as possible, J & 2 20; around the movable member 20 openings. Yes. When the actuator moves near the movable position side of the output shaft 21, it approaches the movable member. ^, Iron 16, the second part of the magnetic circuit is formed when the movable member 20 is closed toward the bottom of the movable member 20; when the movable member 20 and the permanent magnet are moved to the side, the movable member 2 is approached 9 9 'movable member 2 〇 The second part of the magnetic circuit to the open position: the ^ piece 20 and the permanent magnet 16-shape can also constitute the above companion: machine: to use only one permanent magnet H, then, i: structure , And can achieve the purpose of reducing costs. Λ A ^ ^ The example of the gas-insulated switchgear 1 ο 〇 〇 〇 〇 ^ and through the Japanese car levy length adjustment method of the long rod 9 will be described. Because it is provided with a length of 24, by making the extension rod 9 to electromagnetic operation 2 = rotation, the extension rod 9 can be performed on the wheel output shaft 21: out = two: the distance between the insulation rod 8 and the vacuum chamber is worsened. The separation distance of the whole movable contact 4a == Yu: Tuning: Fixed contact 仏 and fixed to the extension of extension rod 9: Capsule 2 makes the extension 9 rotate 'A% Z Z 6 will also rotate together. Therefore, removing the compression plate 27 to the outer diameter of the expansion capsule 26 to extend the expansion t 26 of the stomach margin will not change the capsule: it can be turned, and even if it is not rich— ^ 卩 · + 本 贝, The telescoping bag 26 is provided with a bellows-shaped cylindrical slender portion a that is closed and fixed to the telescoping portion 26a—the inner diameter flange portion 26c on the extension rod 9 formed by the side end portion extending in the inner diameter direction; the other side is The outer diameter flange formed by the end portion extending in the outer diameter direction =: 26a

314283. ptd page 19 579534 5. In the description of the invention (11), the outer diameter flange portion 2 6 b is the bottom plate 11 sandwiched between the wall surface forming the gas-tight container 10 and the pressing plate fixed to the bottom plate 11 Fixed between 2 and 7. Therefore, the length of the extension rod 9 can be adjusted without bending the expansion bag 26 without deforming the expansion bag 26. Moreover, since the length adjustment mechanism 24 is provided between the extension rod 9 and the output shaft 21, the distance between the vacuum chamber 1 and the electromagnetic operation mechanism 12 can be easily adjusted, and in particular, a plurality of vacuum chambers 1 are provided. The gas-insulated switchgear of this embodiment can easily perform the operation of matching the operation timing between the vacuum chambers 1. [Industrial Applicability] The gas-insulated switchgear of the present invention can be used as a gas-insulated switchgear installed in a power organization such as a power station or a substation, and is particularly suitable as a gas insulation for controlling three-phase AC current. Switching device.

314283.ptd Page 20 579534 Brief description of drawings [Simplified description of drawings] Fig. 1 is a sectional view showing an embodiment of the gas-insulated switchgear of the present invention. Fig. 2 is a telescopic bag showing the gas-insulated switchgear of Fig. 1. Detailed oblique view. 1 Vacuum chamber 2 Side wall of vacuum container 2a, 2b 3 Fixed electrode 3a Fixed contact 4 Movable electrode 4a Movable contact 5 Telescopic bag 6 Contact pressure spring 7 Buckle plate 8 Insulation rod 8a Small screw 8b Shaft member 9 Extension rod 10 Gas-tight Container 11 Base plate 11a Extension opening 12 Electromagnetic operation mechanism 16 Permanent magnet 18 First electromagnetic coil 19 Second electromagnetic coil 20 Movable member 21 Output shaft 22 First crotch portion 23 Second crotch portion 24 Length adjustment mechanism 25 Guide 26 Expansion bag 2 6a Telescopic portion 26b Outer diameter flange portion 26c Inner diameter flange portion 27 Push plate 28 Male screw 29 Nut 100 Gas-insulated switchgear

314283.ptd Page 21

Claims (1)

579534 6. Scope of patent application 1. A gas-insulated switchgear, comprising: a vacuum valve, a vacuum container with an internal vacuum, a fixed electrode arranged in the vacuum container, and a device capable of advancing and retreating toward the fixed electrode A movable movable electrode; and conducting / disconnecting an electric current by contacting / separating the fixed electrode and the movable electrode; a gas-tight container sealed with an insulating gas and containing the vacuum chamber; an extension rod, One end is connected to the movable electrode, and the other end extends to the outside of the gas-tight container; and an electromagnetic operating mechanism is provided outside the gas-tight container and operates by an electronic signal from the outside, and is connected to the above An output shaft of the other end of the extension rod; and driving the output shaft with an electromagnetic force to open and close an electromagnetic coil of the vacuum chamber. 2. For the gas-insulated switchgear according to item 1 of the scope of patent application, the vacuum chamber is provided with a plurality of vacuum chambers, and the electromagnetic operation mechanism is provided with one in each vacuum chamber. 3. The gas-insulated switchgear according to item 2 of the patent application, wherein the axis of the movable electrode and the axis of the output shaft are on the same straight line. 4. The gas-insulated switchgear according to any one of claims 1 or 3, wherein the extension rod extends to the outside from an extension opening formed on a wall surface of the gas-tight container. The outer periphery and the gas-tight container described above 314283.ptd, page 22, 579534, patent application range ^ between the peripheral edge of the opening, in a fixed manner, 'set the forward and backward movement between the two extension rods as described in the patent application range 帛 4 Telescopic bag. The expansion bag system comprises: a, a, a, and a switch device, wherein the upper bellows-shaped telescopic portion; an inner diameter flange portion extending from the direction extending to the direction M, and the inner diameter J: Bu The end of the side is a long rod with an inner diameter; and the DM 糸 is closed and fixed to the extension-outer diameter flange portion, which is formed by extending from the above-mentioned extension ☆ M only in the direction; of which ,,, but.卩 The end on the other side is outward. The above-mentioned outer diameter flange, the clip, and the pressure plate 2 fixed to the wall of the oxygen-tight container. 〇The gas b1 in the scope of patent application 1 is fixed. The electromagnetic operating mechanism is provided with a Λ body edge switch device, in which the upper shaft exit shaft passes the upper magnetic coil of the vacuum chamber through the above side; and the second electromagnetic coil, the grandson " moving electrode is spring-pressed to close Location location. ，， 弹 Spring the movable electrode to open =: Item has a gas-insulated switchgear, where the above is used in the "= = = holding mechanism, which is used as = closed position and open position. The gas absolute water-repellent magnet holding mechanism of the scope item 7 is provided with: a movable member which is fixed on the output shaft in the eighth middle; Side I Page 23 579534 6. The scope of the patent application is for the permanent magnets surrounding the movable part; when the movable part is moved to the closed position side, it is close to the movable part, and the movable part and the permanent magnet form a magnetic circuit together, so that the movable part is held at The first vehicle part in the closed position; and the movable part approaching the movable part when the movable part is moved to the opened position side, and the movable part and the permanent magnet form a magnetic circuit together, and the movable part is held in the opened position Second yoke. 9. The gas-insulated switchgear according to item 4 of the scope of patent application, a length adjustment mechanism is provided between the extension rod and the output shaft. 314283.ptd Page 24