JP2011096483A - Gas-insulated switchgear - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the following problem: a whole length including a gas airtight container and a housing chamber of a mechanism part and control equipment becomes large. <P>SOLUTION: The device includes: a coupling bar 50 coupled with an output axis 21 of an electromagnetic operation mechanism 12; the mechanism part-housing chamber 51 to house the coupling bar 50 and the electromagnetic operation mechanism 12; the control equipment-housing chamber 54 which is deployed in parallel with an open-close direction of a vacuum valve 1 and houses control equipment to display an operating state of the vacuum valve 1; and a both-end stretchable flexible cable 55, one side of which is coupled with the coupling bar 50 housed in the mechanism part-housing chamber 51 and the other side of which is coupled with the control equipment housed in the control equipment-housing chamber 54 and which operates the control equipment by stretch movement interlocked with movement of the coupling bar 50. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a gas-insulated switchgear, and more particularly to a gas-insulated switchgear in which a vacuum valve is installed in a gas-sealed container filled with an insulating gas.

  Conventional gas insulated switchgears include those shown in FIGS. FIG. 7 is a schematic configuration diagram of the gas-insulated switchgear as viewed from the opening and closing direction of the vacuum valve, and FIG. 8 is a schematic configuration diagram of the gas-insulated switchgear as viewed from the side, that is, from the direction orthogonal to the opening and closing direction of the vacuum valve. FIG. 9 is a cross-sectional plan view of the gas insulated switchgear.

  In each of these drawings, a gas insulated switchgear 100 includes a vacuum valve 1, which is a vacuum vessel 2 whose inside is kept in vacuum, and a fixed electrode 3 disposed in the vacuum vessel 2. The movable electrode 4 is provided so as to be movable back and forth toward the fixed electrode 3. When the fixed electrode 3 and the movable electrode 4 are brought into contact with and separated from each other, the vacuum valve 1 conducts and interrupts a current with respect to a bus bar electrically connected to both.

The gas insulated switchgear 100 further includes, for example, a gas-sealed container 10 that contains an insulating gas such as dry air and houses the vacuum valve 1, and one end connected to the movable electrode 4 and the other end outside the gas-sealed container 10. And a rod 9 extending to the surface. Further, an output shaft 21 disposed outside the gas-sealed container 10 and connected to the other end of the rod 9 and an electromagnetic coil 18 that opens and closes the vacuum valve 1 by driving the output shaft 21 by electromagnetic force. , 19.

  The gas sealed container 10 is supported by the gantry 30 and disposed in the main circuit chamber 31. The electromagnetic operation mechanism 12 and the like outside the gas-sealed container 10 are disposed in the mechanism unit / control device storage chamber 32. The power supply side terminal body 33 and the load side terminal body 34 are connected to the vacuum valve 1 through the gas sealed container 10, and the extra high voltage electric wire 35 is connected to the power supply side terminal body 33 and the load side terminal body 34.

  By the way, the output shaft 21 of the electromagnetic operation mechanism 12 is connected to a connection bar 36 that connects the three-phase output shafts 21 together. The connecting bar 36 can move back and forth between strokes indicated by a solid line and a dotted line. The connection bar 36 is engaged with one end of a first drive body 37 made of, for example, a hook spring. The other end of the first driver 37 is engaged with a support shaft 39 of an on / off indicator 38.

  In addition, one end of a second driving body 40 made of, for example, a hook spring is engaged with the connecting bar 36. The other end of the second driving body 40 is engaged with the support shaft 42 of the operation counter 41.

  In the conventional gas insulated switchgear configured as described above, FIG. 9 shows a state where the vacuum valve 1 is turned on and the connecting bar 36 connected to the output shaft 21 is in the position of the solid line. That is, when the first electromagnetic coil 18 of the electromagnetic operation mechanism 12 is excited by the electric power supplied from the outside, the first electromagnetic coil 18 generates an electromagnetic force, and the mover 20 is attracted by the electromagnetic force. Thereby, the needle | mover 20 moves to the arrow A direction of FIG. The suction force of the first electromagnetic coil 18 pushes the output shaft 21 toward the vacuum valve 1, whereby the fixed contact 3 a and the movable contact 4 a of the vacuum valve 1 come into contact with each other and the vacuum valve 1 is closed. .

  In conjunction with the output shaft 21, the connecting bar 36 moves in the direction of arrow A and moves to the position indicated by the solid line in FIG. When the connecting bar 36 moves in the direction of arrow A, the support shaft 39 of the on / off indicator 38 is rotated by the first driving body 37 made of, for example, a hook spring, and the display on the on / off indicator 38 shows, for example, “On”. Is displayed. When the connecting bar 36 moves in the direction of arrow A, the support shaft 42 of the operation counter 41 is rotated by the second driving body 40 made of, for example, a hook spring, and the counter of the operation counter 41 is counted.

  On the other hand, when the second electromagnetic coil 19 of the electromagnetic operation mechanism 12 is excited by electric power supplied from the outside, the second electromagnetic coil 19 generates an electromagnetic force, and the electromagnetic force causes the mover 20 to move. Suction. Thereby, the needle | mover 20 moves to the arrow B direction of FIG. Then, the attractive force of the second electromagnetic coil 19 overcomes the attractive force between the mover 20 and the first yoke 22, and the output shaft 21 is pulled to the side opposite to the vacuum valve 1. The fixed contact 3a and the movable contact 4a of the valve 1 are separated from each other and the vacuum valve 1 is opened.

  In conjunction with the output shaft 21, the connecting bar 36 moves in the direction of the arrow B and moves to the position of the dotted line in FIG. When the connecting bar 36 moves in the direction of arrow B, the support shaft 39 of the on / off indicator 38 is rotated in the direction opposite to that in the direction of arrow A by the first driver 37 made of, for example, a hook spring, so The display of the device 38 is displayed as “OFF”, for example. Further, when the connecting bar 36 moves in the direction of arrow B, the support shaft 42 of the operation counter 41 is rotated in the direction opposite to that in the direction of arrow A by the second driving body 40 made of, for example, a hook spring.

  There exists a thing as shown in patent document 1 as the above gas insulated switchgear. Another example of the electromagnetic operation mechanism is disclosed in Patent Document 2. Furthermore, there exist some which are shown to patent documents 3-5 as other examples of an on / off indicator.

International Publication Number WO 2004-055550 JP 2006-4902 A JP-A-4-296417 JP-A-10-125185 Japanese Patent Laid-Open No. 10-269906

  In the conventional gas insulated switchgear described above, control devices such as the on / off indicator 38 and the operation counter 41 extend in the extending direction of the electromagnetic operating mechanism 12 in the extending and retracting direction, that is, in the extending direction of the gas sealed container 10. As a gas insulated switchgear, there is a problem that the total length including the gas-sealed container 10 and the mechanism / control device storage chamber 32 is large.

  In addition, the control unit such as the mechanism unit of the electromagnetic operation mechanism 12 and the on / off indicator 38 and the operation counter 41 are arranged in the mechanism unit / control device storage chamber 32, which restricts the layout design of the control device. In addition, there is a problem that it is impossible to improve workability such as assembly of control equipment or maintenance.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a gas insulated switchgear that can reduce the overall length of the apparatus and improve workability.

  A gas-insulated switchgear according to the present invention comprises a vacuum container whose interior is maintained in a vacuum, a fixed electrode disposed in the vacuum container, and a movable electrode provided so as to be movable back and forth toward the fixed electrode. A vacuum valve that energizes and cuts off current when the fixed electrode and the movable electrode come in contact with each other; a gas-sealed container that contains an insulating gas and that houses the vacuum valve; and one end of the movable electrode A rod whose other end extends to the outside of the gas sealed container, an output shaft disposed outside the gas sealed container and connected to the other end of the rod, and the output shaft is driven by electromagnetic force And a gas-insulated switchgear comprising an operation mechanism for opening and closing the vacuum valve, the mechanism part storage chamber for storing the operation mechanism, and a parallel operation with the opening and closing direction of the vacuum valve. It is obtained by a control device housing chamber for accommodating the control devices for displaying the status.

  A gas-insulated switchgear according to the present invention comprises a vacuum container whose interior is maintained in a vacuum, a fixed electrode disposed in the vacuum container, and a movable electrode provided so as to be movable back and forth toward the fixed electrode. A vacuum valve that energizes and cuts off current when the fixed electrode and the movable electrode come in contact with each other; a gas-sealed container that contains an insulating gas and that houses the vacuum valve; and one end of the movable electrode A rod whose other end extends to the outside of the gas sealed container, an output shaft disposed outside the gas sealed container and connected to the other end of the rod, and the output shaft is driven by electromagnetic force A gas-insulated switchgear comprising an electromagnetic operating mechanism having an electromagnetic coil for opening and closing the vacuum valve; a connecting bar connected to the output shaft of the electromagnetic operating mechanism; the connecting bar; A mechanism unit storage chamber for storing an operation mechanism, a control device storage chamber for storing a control device that is arranged in parallel with the opening and closing direction of the vacuum valve and displays the operation state of the vacuum valve, and one side is the mechanism unit storage Both ends are connected to the connecting bar stored in the chamber and the other side is connected to the control device stored in the control device storage chamber, and the both ends extend and contract to operate the control device in conjunction with the movement of the connecting bar. A flexible cable is provided.

  In the gas insulated switchgear according to the present invention, the control device storage chamber for storing the control device is disposed in parallel with the opening / closing direction of the vacuum valve, thereby reducing the overall length of the device and improving the workability. An insulated switchgear can be obtained.

It is the schematic block diagram seen from the opening / closing direction of the vacuum valve in the gas insulated switchgear concerning Embodiment 1 of this invention. It is the schematic block diagram seen from the direction orthogonal to the opening / closing direction of the vacuum valve in the gas insulated switchgear concerning Embodiment 1 of this invention. 1 is a schematic perspective view showing a gas insulated switchgear according to Embodiment 1 of the present invention. It is a front view which shows the both ends elastic flexible cable in the gas insulated switchgear concerning Embodiment 1 of this invention. 1 is a cross-sectional plan view showing a gas insulated switchgear according to Embodiment 1 of the present invention. It is a schematic perspective view which shows the gas insulated switchgear concerning Embodiment 2 of this invention.

It is the schematic block diagram seen from the opening / closing direction of the vacuum valve in the conventional gas insulated switchgear. It is the schematic block diagram seen from the direction orthogonal to the opening / closing direction of the vacuum valve in the conventional gas insulated switchgear. It is a cross-sectional top view which shows the conventional gas insulated switchgear.

Embodiment 1.
Embodiment 1 of the present invention will be described below with reference to FIGS. 1 is a schematic configuration diagram of a gas insulated switchgear according to Embodiment 1 of the present invention as viewed from the opening / closing direction of a vacuum valve. FIG. 2 is a schematic configuration diagram viewed from a direction orthogonal to the opening / closing direction of the vacuum valve in the gas insulated switchgear according to Embodiment 1 of the present invention. FIG. 3 is a schematic perspective view showing the gas insulated switchgear according to Embodiment 1 of the present invention, in which each storage chamber is visualized. FIG. 4 is a front view showing a double-end elastic flexible cable in the gas insulated switchgear according to Embodiment 1 of the present invention. 5 is a cross-sectional plan view showing a gas insulated switchgear according to Embodiment 1 of the present invention.

  In each of these drawings, the gas insulated switchgear 200 includes a vacuum valve 1 for conducting and interrupting current. The vacuum valve 1 has a bottomed cylindrical vacuum vessel 2. A fixed electrode 3 and a movable electrode 4 are accommodated in the vacuum vessel 2. The fixed electrode 3 is fixed to one side of the vacuum vessel 2. A main circuit bus (not shown) is electrically connected to the fixed electrode 3.

  A movable electrode 4 is disposed so as to face the fixed electrode 3. The movable electrode 4 is provided through the side wall 2b on the other side of the vacuum vessel 2 so as to be movable back and forth. A bellows 5 is provided in a portion of the side wall 2b through which the movable electrode 4 passes. The bellows 5 seals the movable electrode 4 and the side wall 2b of the vacuum vessel 2 so as to be extendable and contractible. The inside of the vacuum vessel 2 is kept in a vacuum state in order to quickly diffuse and extinguish the arc generated at the time of interruption.

  When the movable electrode 4 moves back and forth with respect to the fixed electrode 3, the fixed contact 3 a provided at the tip of the fixed electrode 3 and the movable contact 4 a provided at the tip of the movable electrode 4 are brought into contact with and separated from each other. Valve 1 opens and closes. A contact pressure spring 6 is disposed at the end of the movable electrode 4 for the purpose of applying a predetermined contact pressure load to the fixed contact 3a and the movable contact 4a. The contact pressure spring 6 is connected between the locking plate 7 connected to the end of the movable electrode 4 and the insulating rod 8. The locking plate 7 penetrates a shaft hole 8a projecting from the insulating rod 8 in the direction of the vacuum valve 1 and having an outer diameter smaller than the diameter of the hole with predetermined play through the center hole. The screw 8b is fastened to the center hole of the shaft member 8a so as to be prevented from coming out of the shaft member 8a. The locking plate 7 is supported so as to be movable on the shaft member 8 a by a predetermined distance with respect to the insulating rod 8, thereby restricting the extension amount of the contact pressure spring 6. The insulating rod 8 is made of an epoxy resin or the like, and electrically insulates between a rod 9 described later and the vacuum valve 1.

  The vacuum valve 1, the contact pressure spring 6, the insulating rod 8 and the locking plate 7 are accommodated in a gas sealed container 10. The gas sealed container 10 is filled with an insulating gas such as dry air. A side wall on one side of the gas sealed container 10 constitutes a base plate 11. The base plate 11 has an extension opening 11a having a predetermined size. The rod 9 having one end connected to the insulating rod 8 extends to the outside through the extension opening 11a.

  An electromagnetic operation mechanism 12 is installed outside the gas sealed container 10. The electromagnetic operation mechanism 12 is supported by two support members 15 extending from the base plate 11a. The electromagnetic operating mechanism 12 first has a cylindrical permanent magnet 16 at the center. Further, on the vacuum valve 1 side of the permanent magnet 16, a first electromagnetic coil 18 formed in an annular shape is disposed adjacent to the permanent magnet 16 so that the central axis coincides. Also, on the opposite side of the permanent magnet 16, a second electromagnetic coil 19 that is also formed in an annular shape is disposed adjacent to the permanent magnet 16 so that the central axis coincides. A cylindrical movable element 20 is provided so as to be movable in the axial direction so as to penetrate through the central holes of the permanent magnet 16, the first electromagnetic coil 18, and the second electromagnetic coil 19 arranged side by side in this manner. ing. An output shaft 21 penetrates and is fixed on the central axis of the mover 20.

  Further, the first electromagnetic coil 18 is further provided with a thick disc-shaped first yoke 22 in parallel on the vacuum valve 1 side. On the other hand, on the opposite side of the second electromagnetic coil 19 from the vacuum valve 1, a thick disc-like second yoke 23 is arranged in parallel. The output shaft 21 penetrates through the central holes of the first yoke 22 and the second yoke 23 so as to be movable forward and backward. The mover 20, the first yoke 22, and the second yoke 23 are each made of iron.

  The electromagnetic operation mechanism 12, the vacuum valve 1, and the rod 9 are arranged on the same straight line. The output shaft 21 and the rod 9 of the electromagnetic operation mechanism 12 are connected by a length adjustment mechanism 24. The length adjusting mechanism 24 has a female screw threaded inside the cylinder, and has a male screw formed at each end of the output shaft 21 and the rod 9 screwed into both ends. When the rod 9 is rotated in a predetermined direction with respect to the length adjusting mechanism 24, the rod 9 moves in the axial direction so as to be separated from the output shaft 21, whereby the distance between the insulating rod 8 and the vacuum valve 1 is increased. Shrink. Further, when the rod 9 is rotated in the opposite direction with respect to the length adjusting mechanism 24, the output shaft 21 and the rod 9 approach each other, and as a result, the distance between the insulating rod 8 and the vacuum valve 1 increases.

  A cylindrical guide 25 is fixed to the extension opening 11 a of the base plate 11 along the axis of the rod 9. The rod 9 is gently guided by the guide 25 and slides in the axial direction. A bellows 26 is provided on the outer periphery of the guide 25.

  The gas sealed container 10 is supported by the gantry 30 and disposed in the main circuit chamber 31. The power supply side terminal body 33 and the load side terminal body 34 are connected to the vacuum valve 1 through the gas sealed container 10, and the extra high voltage electric wire 35 is connected to the power supply side terminal body 33 and the load side terminal body 34.

  The connecting bar 50 connected to the output shaft 21 of the electromagnetic operation mechanism 12 connects the output shafts 21 of the electromagnetic operation mechanism 12 having three phases, for example. The connection bar 50 and the electromagnetic operation mechanism 12 outside the gas-sealed container 10 are disposed in the mechanism unit storage chamber 51. Further, the connecting bar 50 can move back and forth between strokes indicated by a solid line and a dotted line.

  A control device that is separated from the mechanism portion storage chamber 51 and displays the operation state of the vacuum valve 1, for example, the control device storage chamber 54 that stores the on / off indicator 52 and the operation counter 53 is shown as a vacuum valve. 1 in parallel with the opening and closing direction.

  A control device in which one end of the flexible cable 55 at both ends is connected to a connecting bar 50 stored in the mechanism housing chamber 51 and the other side of the flexible cable 55 at both ends is stored in the control device storage chamber 54. The on / off indicator 52 and the operation counter 53 are connected to a certain on / off indicator 52 and an operation counter 53, and the flexible cable 55 at both ends expands and contracts in conjunction with the movement of the connecting bar 50, and the on / off indicator 52 and the operation counter 53, which are control devices. It is configured to operate.

  As shown in FIG. 4, the flexible cable 55 having both ends stretchable includes a main circuit side mounting portion 55a, a main circuit side expanding wire 55b, a control device side mounting portion 55c, a control device side mounting portion 55d, and a protective covering. It is comprised with the body 55e. The both ends stretchable flexible cable 55 is configured such that when one side is extended, the other side is also extended, and when one side is contracted, the other side is also contracted. It has a function like a brake wire of a so-called bicycle.

  The main circuit side attachment portion 55 a of the both ends elastic flexible cable 55 is connected to the connection bar 50 and supported by the main circuit side attachment metal fitting 56. The control device side attachment portion 55c of the both ends stretchable flexible cable 55 is connected to the support shaft 52a of the on / off indicator 52 and the support shaft 53a of the operation counter 53, and is supported by the control device side mounting bracket 57.

  In addition, the wiring path between the mechanical portion storage chamber 51 and the control device storage chamber 54 of the both ends stretchable flexible cable 55 is carried out through the wiring insertion hole 58. Further, the side connected to the on / off indicator 52 of the both ends elastic flexible cable 55 is an on / off indicator side cable 59, and the side connected to the operation counter 53 of the both ends elastic flexible cable 55 is the operation counter side cable 60. It becomes.

  Next, the operation will be described. In the gas insulated switchgear according to Embodiment 1 of the present invention configured as described above, FIG. 5 shows a state in which the vacuum valve 1 is turned on and the connecting bar 50 connected to the output shaft 21 is in the position of the solid line. Yes. That is, when the first electromagnetic coil 18 of the electromagnetic operation mechanism 12 is excited by the electric power supplied from the outside, the first electromagnetic coil 18 generates an electromagnetic force, and the mover 20 is attracted by the electromagnetic force. Thereby, the needle | mover 20 moves to the arrow A direction of FIG. The suction force of the first electromagnetic coil 18 pushes the output shaft 21 toward the vacuum valve 1, whereby the fixed contact 3 a and the movable contact 4 a of the vacuum valve 1 come into contact with each other and the vacuum valve 1 is closed. .

  In conjunction with the output shaft 21, the connecting bar 50 moves in the direction of arrow A and moves to the position indicated by the solid line in FIG. When the connecting bar 50 moves in the direction of arrow A, the main circuit side elastic wire 55b of the double-end elastic cable 55 extends. When the main circuit side stretchable wire 55b extends, the control device side attachment portion 55d of the double-end stretchable flexible cable 55 also extends. By extending the control device side mounting portion 55d, the support shaft 52a of the on / off indicator 52 is rotated in the direction of the arrow C1, and the display on the on / off indicator 52 is displayed as, for example, “On”.

  When the connecting bar 50 moves in the direction of arrow A, the main circuit side elastic wire 55b of the double-end elastic flexible cable 55 extends. When the main circuit side stretchable wire 55b extends, the control device side attachment portion 55d of the double-end stretchable flexible cable 55 also extends. By extending the control device side attaching portion 55d, the support shaft 42 of the operation counter 41 is rotated in the direction of the arrow D1, and the counter of the operation counter 41 is counted.

  On the other hand, when the second electromagnetic coil 19 of the electromagnetic operation mechanism 12 is excited by electric power supplied from the outside, the second electromagnetic coil 19 generates an electromagnetic force, and the electromagnetic force causes the mover 20 to move. Suction. Thereby, the needle | mover 20 moves to the arrow B direction of FIG. Then, the attractive force of the second electromagnetic coil 19 overcomes the attractive force between the mover 20 and the first yoke 22, and the output shaft 21 is pulled to the side opposite to the vacuum valve 1. The fixed contact 3a and the movable contact 4a of the valve 1 are separated from each other and the vacuum valve 1 is opened.

  In conjunction with the output shaft 21, the connecting bar 50 moves in the direction of arrow B and moves to the position of the dotted line in FIG. When the connecting bar 50 moves in the direction of arrow B, the main circuit side elastic wire 55b of the double-end elastic flexible cable 55 contracts. When the main circuit side expansion / contraction wire 55b is contracted, the control device side attaching portion 55d of the both ends elastic flexible cable 55 is also contracted. By contracting the control device side attachment portion 55d, the support shaft 52a of the on / off indicator 52 is rotated in the direction of the arrow C2, and the display on the on / off indicator 52 is displayed, for example, “off”.

  When the connecting bar 50 moves in the direction of arrow B, the main circuit side elastic wire 55b of the double-end elastic flexible cable 55 is contracted. When the main circuit side expansion / contraction wire 55b is contracted, the control device side attaching portion 55d of the both ends elastic flexible cable 55 is also contracted. By contracting the control device side mounting portion 55d, the support shaft 42 of the operation counter 41 is rotated in the direction of the arrow D2, which is the opposite direction to the direction of the arrow A.

  According to the first embodiment of the present invention, the control device storage for storing the on / off indicator 52 and the operation counter 53, which are control devices for displaying the operation state of the vacuum valve 1, separated from the mechanism housing chamber 51. By disposing the chamber 54 in parallel with the opening / closing direction of the vacuum valve 1, only the mechanism portion of the electromagnetic operating mechanism 12 and the connecting bar 50 is provided in the mechanism portion storage chamber 51. That is, it is possible to make the mechanism unit storage chamber 51 in which the size of the gas sealed container 10 in the extension direction is reduced, and as a gas insulated switchgear, the total length including the gas sealed container 10 and the mechanism unit storage chamber 51 is reduced. be able to.

  In addition, an ON / OFF indicator 52 which is a control device for displaying the operation state of the vacuum valve 1 and a control device storage chamber 54 for storing the operation counter 53 are separated from the mechanical portion storage chamber 51 and the opening / closing direction of the vacuum valve 1 is determined. By arranging them in parallel, the degree of freedom in the layout design of the control devices such as the on / off indicator 52 and the operation counter 53 is increased, and assembling or maintenance of the control devices such as the on / off indicator 52 and the operation counter 53 is performed. It is possible to improve the performance.

  Further, since the connection bar 50 connected to the output shaft 21 of the electromagnetic operation mechanism 12 is connected to the on / off indicator 52 and the operation counter 53 using the double-end elastic cable 55, a complicated link is obtained. This can be done without using a mechanism, and the structure can be simplified.

  Further, the connection bar 50 connected to the output shaft 21 of the electromagnetic operation mechanism 12 is connected to the on / off indicator 52 and the operation counter 53 using a double-end elastic cable 55. The end cable 55 is shown as being branched into an on / off indicator side cable 59 and an operation counter side cable 60. However, the present invention is not limited to this, and each of the on / off indicator 52 and the operation counter 53 is connected to each other. You may make it connect independently to the connection bar | burr 50 by the flexible cable 55 which can be elastic | stretched at both ends, and there exists the same effect.

Embodiment 2.
A second embodiment of the present invention will be described with reference to FIG. FIG. 6 is a schematic perspective view showing a gas-insulated switchgear according to Embodiment 2 of the present invention, in which each storage chamber is visualized.

  In the first embodiment described above, the connecting shaft 50 connects the output shafts 21 of the electromagnetic operating mechanism 12 composed of three phases at one time, and one on / off indicator 52 and one operation counter 53 are provided. Although the case where the bar 50, the on / off indicator 52, and the operation counter 53 are connected by the flexible cable 55 at both ends has been described, in the second embodiment, each output shaft 21 of the electromagnetic operation mechanism 12 having three phases is described. The connecting bars 50a, 50b and 50c are connected to each other separately.

  As described above, the connection bars 50a, 50b, and 50c are provided separately and independently, and the on / off indicators 52a, 52b, and 52c and the operation counters 53a, 53b, and 53c are also provided separately and independently. Corresponding to each phase, for example, the first phase corresponds to the connection bar 50a, the on / off indicator 52a, and the operation counter 53a, and the second phase corresponds to the connection bar 50b, the on / off indicator 52b, and the operation counter 53b. The third phase corresponds to the connection bar 50c, the on / off indicator 52c, and the operation counter 53c.

  Then, the connection bar 50a corresponding to the first phase, the on / off indicator 52a, and the operation counter 53a are connected by the elastic flexible cable 55 at both ends, and the connection bar 50b corresponding to the second phase and the on / off indicator. 52b and the operation counter 53b are connected with a flexible cable 55 at both ends, and a connection bar 50c corresponding to the third phase is connected with an on / off indicator 52c and an operation counter 53c with a flexible cable 55 at both ends. ing.

  In the second embodiment configured as described above, the operation state of the vacuum valve 1 is switched independently for each phase, and the on / off indicator 52a, 52b, 52c and the operation counter 53a, 53b for each phase. , 53c and can be confirmed. The other effects are the same as those of the first embodiment described above.

  In addition, the connection bars 50a, 50b, 50c and the on / off indicators 52a, 52b, 52c and the operation counters 53a, 53b, 53c are separately connected to the output shafts 21 of the electromagnetic operation mechanism 12 composed of three phases. Both ends elastic flexible cable 55 is used. For example, both ends elastic flexible cable 55 is branched into on / off indicator side cable 59 and operation counter side cable 60. Without being limited thereto, the on / off indicators 52a, 52b, and 52c and the operation counters 53a, 53b, and 53c are independently connected to the connecting bars 50a, 50b, and 50c by the elastic flexible cable 55 at both ends. The same effect may be obtained.

  The present invention relates to a gas-insulated switchgear in which a vacuum valve is installed in a gas-sealed container filled with, for example, an insulating gas. The gas-insulated switchgear is capable of reducing the overall length of the apparatus and improving workability. It is suitable for realization.

DESCRIPTION OF SYMBOLS 1 Vacuum valve 2 Vacuum container 3 Fixed electrode 4 Movable electrode 9 Rod 10 Gas sealed container 12 Electromagnetic operation mechanism 18 1st electromagnetic coil 19 2nd electromagnetic coil 21 Output shaft 50 Connection bar 50a Connection bar 50b Connection bar 50c Connection bar 51 Mechanical unit storage chamber 52 ON / OFF indicator 52a ON / OFF indicator 52b ON / OFF indicator 52c ON / OFF indicator 53 Operation counter 53a Operation counter 53b Operation counter 53c Operation counter 54 Control device storage chamber 55 Double-end stretchable flexible cable 200 Gas Insulated switchgear

Claims (6)

  A vacuum vessel having an interior maintained in a vacuum, a fixed electrode disposed in the vacuum vessel, and a movable electrode provided to be movable back and forth toward the fixed electrode, the fixed electrode and the movable electrode A vacuum valve for energizing and shutting off current by contact and separation, a gas-sealed container filled with an insulating gas and containing the vacuum valve, one end connected to the movable electrode and the other end to the gas-sealed container A rod extending outside the gas-sealed container, an output shaft connected to the other end of the rod, and an operating mechanism for driving the output shaft by electromagnetic force to open and close the vacuum valve And a mechanism housing chamber that houses the operation mechanism, and a control device that houses a control device that is disposed in parallel with the opening and closing direction of the vacuum valve and displays the operating state of the vacuum valve. Gas insulated switchgear is characterized in that a device housing chamber.   A vacuum vessel having an interior maintained in a vacuum, a fixed electrode disposed in the vacuum vessel, and a movable electrode provided to be movable back and forth toward the fixed electrode, the fixed electrode and the movable electrode A vacuum valve for energizing and shutting off current by contact and separation, a gas-sealed container filled with an insulating gas and containing the vacuum valve, one end connected to the movable electrode and the other end to the gas-sealed container A rod extending outside the gas sealing container, an output shaft connected to the other end of the rod and connected to the other end of the rod, and an electromagnetic coil for opening and closing the vacuum valve by driving the output shaft by electromagnetic force A gas-insulated switchgear comprising an electromagnetic operating mechanism, a connecting bar connected to the output shaft of the electromagnetic operating mechanism, a mechanism part storage chamber for storing the connecting bar and the electromagnetic operating mechanism, The control device storage chamber is disposed in parallel with the opening and closing direction of the vacuum valve, and stores a control device for displaying the operation state of the vacuum valve, and one side is connected to the connection bar stored in the mechanism portion storage chamber. The other side is connected to a control device housed in the control device storage chamber, and has a double-end stretchable flexible cable that operates the control device by extending and contracting in conjunction with movement of the connecting bar. Gas insulated switchgear.   The gas-insulated switchgear according to claim 2, wherein the connecting bar connects the electromagnetic operating mechanisms having three phases together.   The connection bar is connected to each phase of the electromagnetic operation mechanism, the control device is arranged for each phase, and the connection bar of each phase and the control device of each phase are each flexible at both ends. The gas insulated switchgear according to claim 2, wherein each phase is connected by a cable.   5. The gas-insulated switchgear according to claim 2, wherein the both end stretchable flexible cable is configured such that when one side is extended, the other side is also extended, and when one side is contracted, the other side is also contracted. apparatus.   The gas-insulated switchgear according to any one of claims 1 to 5, wherein the control device is an on / off indicator and an operation counter.

Images