JP2010277848A - Switching device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem of requiring three kinds of insulated rods, and pleat parts when use purposes for a rated voltage with high capacity, the rated voltage with medium capacity and the rated voltage of low capacity is required. <P>SOLUTION: A switching device includes: an operation mechanism part 14 having an operation rod 14b coupled with one side of a drive lever 16 fixed to a spindle 15 arranged and installed so as to be orthogonal to the opening/closing direction between electrodes of a vacuum valve 1; the insulated rod 13 of which one end side 13a is coupled to a movable conductive shaft 8 of the vacuum valve 1 and the other side 13b is coupled to the other side of the drive lever 16, and which opens and closes between the electrodes of the vacuum valve 1; and a metallic means 19 for adjusting an insulation creepage distance, wherein one end side 19a of the metallic means is disposed facing the insulated rod 13 with a predetermined air gap between the one side 13a and the other side 13b of the insulated rod 13, and the other end 19b thereof is mounted on a member located on the ground potential side, for example, on a base frame 3. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an opening / closing device that is used in, for example, a power transmission / distribution facility or a power receiving facility, and includes an insulating rod connected to a movable energizing unit and an operation mechanism unit that drives the insulating rod.

  A conventional switchgear is shown in FIG. FIG. 17 is a sectional side view showing the switchgear. In FIG. 17, the operating rod 14 b is driven by a driving source (not shown) of the operating mechanism unit 14, and the drive lever 16 is rotated together with the support shaft 16 around the axis of the support shaft 16 in conjunction with the drive of the operation rod 14 b. The insulating rod 13 that rotates clockwise and is connected to the other side 16b of the drive lever 16 is pushed upward. The movable energizing shaft 8 connected to the one side 13 a that is the upper end side of the insulating rod 13 moves upward, and the movable side electrode 7 of the movable energizing shaft 8 contacts the fixed side electrode 5 of the fixed energizing shaft 6. When the fixed electrode 5 and the movable electrode 7 are in contact with each other, the gap between the electrodes of the vacuum valve 1 is closed.

  When opening the electrodes of the vacuum valve 1, the operating rod 14 b is driven in a direction opposite to the operation at the time of closing by a driving source (not shown) of the operating mechanism unit 14, and the operating rod 14 b is driven. In conjunction with this, the support rod 16 rotates clockwise around the axis of the support shaft 16, and the insulating rod 13 connected to the other side 16b of the drive lever 16 is pushed downward. The movable energizing shaft 8 connected to the one side 13a which is the upper end side of the insulating rod 13 moves downward, and the movable side electrode 7 of the movable energizing shaft 8 is separated from the fixed side electrode 5 of the fixed energizing shaft 6 and is in a contact state. Is released. When the contact state between the fixed electrode 5 and the movable electrode 7 is released, the electrode of the vacuum valve 1 is opened.

  By the way, in the switchgear as described above, for example, in order to maintain an appropriate margin in the case of occurrence of a short circuit at the time of accident or various overvoltages, it is a conventional knowledge that a ground fault is given priority by providing a difference in insulation strength Therefore, it is desirable to increase the insulation strength in the order of ground-to-ground <between different-phase main circuits <between main circuits. Selecting insulation strength in consideration of such an appropriate margin is also called insulation coordination.

  The insulation characteristics of the switchgear as described above will be described. The insulation creepage distance between the movable energizing portion on one side 13a of the insulating rod 13 and the metal base frame 3 on the ground potential side, for example, is as shown by E in FIG. As shown in FIG. 17, in order to appropriately secure the insulation creepage distance E, the insulation rod 13 between the movable energization part on one side 13a of the insulation rod 13 and the metal base frame 3 on the ground potential side, for example. A plurality of pleat portions 13c are provided at intervals.

  For example, when a short circuit occurs or an overvoltage occurs at the time of an accident, the circuit is not short-circuited between the main circuits or between the different-phase main circuits, but to the ground potential side, that is, the base frame 3 side. In addition, even when the insulation performance has deteriorated due to contamination or condensation, a short circuit is always made on the ground potential side, that is, the base frame 3 side. By doing so, damage to the switchgear is minimized.

  In the conventional switchgear configured as described above, the insulating rod 13 is provided with the pleat portion 13c so as to appropriately secure the insulation creepage distance E. Therefore, the insulation rod 13 according to the rated voltage of the switchgear and The pleat 13c is selected and used.

JP-A 61-185815 JP 2000-353460 A

  In the conventional switchgear described above, the insulating rod 13 is provided with the pleat portion 13c so as to ensure the insulation creepage distance E appropriately. However, the insulating rod 13 and the pleat portion 13c corresponding to the rated voltage of the switchgear are provided. Must be selected and used. Therefore, when a use application for a large-capacity rated voltage, a medium-capacity rated voltage, or a small-capacity rated voltage is required, three types of insulating rods 13 and pleat portions 13c are required.

  As a result, there is a problem that standardization of parts of the switchgear cannot be achieved, mass production is difficult, and cost cannot be reduced.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an opening / closing device capable of reducing the cost with a simple configuration.

  An opening / closing apparatus according to the present invention includes a vacuum valve disposed in an insulating frame, a support shaft disposed so that an axis is orthogonal to an inter-electrode opening / closing direction of the vacuum valve, and a support shaft orthogonal to the support shaft. A drive lever fixed to the support shaft, an operation rod connected to one side of the drive lever, and an operation mechanism section for rotating the support shaft via the drive lever, and one side of the vacuum is the vacuum It is connected to the movable energizing shaft of the valve, the other side is connected to the other side of the drive lever, and moves in the opening and closing direction between the electrodes of the vacuum valve in conjunction with the rotation of the support shaft. An insulating rod that opens and closes, and one side is disposed between the one side of the insulating rod and the other side of the insulating rod via the insulating rod and a predetermined gap, and the other side is attached to a member on the ground potential side Metal insulation It is obtained by a distance adjustment means.

  The switchgear according to the present invention includes an insulating frame disposed on a metal base frame on the ground potential side, a vacuum valve disposed in the insulating frame, and an axis of the electrode of the vacuum valve. A support shaft disposed so as to be orthogonal to the opening / closing direction, a drive lever fixed to the support shaft so as to be orthogonal to the support shaft, and an operation rod connected to one side of the drive lever. An operation mechanism for rotating the support shaft via the drive lever, and one side is connected to the movable energizing shaft of the vacuum valve, and the other side is inserted through a through hole provided in the base frame. An insulating rod that is connected to the other side of the drive lever, moves in the opening and closing direction between the electrodes of the vacuum valve in conjunction with the rotation of the support shaft, and opens and closes between the electrodes of the vacuum valve, and one side of the insulating rod One side and the insulation b A metal insulating creepage distance adjusting means attached to the base frame, which is disposed between the other side of the door and the insulating rod and a predetermined gap, and the other side is on the ground potential side. is there.

  In the switchgear according to the present invention, a metal is attached to a member, one side of which is disposed between the one side of the insulating rod and the other side of the insulating rod via the insulating rod and a predetermined gap, and the other side is on the ground potential side. By using the configuration in which the insulating creepage distance adjusting means is provided, a switchgear that can adjust the insulating creepage distance using the same insulating rod can be obtained.

It is a cross-sectional side view which shows the switchgear concerning Embodiment 1 of this invention. It is a principal part sectional side view which shows the switchgear concerning Embodiment 2 of this invention. It is a principal part sectional top view which shows the switchgear concerning Embodiment 3 of this invention. It is a principal part sectional top view which shows the switchgear concerning Embodiment 4 of this invention.

It is principal part sectional side view which shows the switchgear concerning Embodiment 5 of this invention. It is the figure which looked at the insulation creeping distance adjustment means part in the switchgear concerning Embodiment 5 of this invention from the left side of FIG. It is a principal part expanded sectional side view which shows the switchgear concerning Embodiment 5 of this invention. It is the figure which looked at the insulation creeping distance adjustment means part in the switchgear concerning Embodiment 5 of this invention from the left side of FIG.

It is principal part sectional side view which shows the switchgear concerning Embodiment 6 of this invention. It is a principal part sectional side view which shows the switchgear concerning Embodiment 7 of this invention. It is a principal part sectional side view which shows the switchgear concerning Embodiment 8 of this invention.

It is a principal part sectional side view which shows the switchgear concerning Embodiment 9 of this invention. It is a principal part sectional side view which shows the switchgear concerning Embodiment 9 of this invention. It is a principal part sectional side view which shows the switchgear concerning Embodiment 10 of this invention.

It is a principal part sectional side view which shows the switchgear concerning Embodiment 11 of this invention. It is a principal part sectional side view which shows the switchgear concerning Embodiment 12 of this invention. It is a cross-sectional side view which shows the conventional switchgear.

Embodiment 1.
A first embodiment of the present invention will be described below with reference to FIG. 1 is a cross-sectional side view showing a switchgear according to Embodiment 1 of the present invention. In FIG. 1, 1 is a vacuum valve, 2 is an insulating frame 2 mounted on a metal base frame 3 on the ground potential side, and the vacuum valve 1 is disposed in the internal space. 4 is an upper terminal conductor attached to the upper side of the insulating frame 2, and 5 is a fixed side electrode disposed in the vacuum valve 1 and fixed to the fixed energizing shaft 6. 4 is electrically connected. Reference numeral 7 denotes a movable side electrode disposed in the vacuum valve 1 and opposed to the fixed side electrode 5 and fixed to the movable energizing shaft 8. Reference numeral 9 denotes a lower side terminal conductor attached to the lower side of the insulating frame 2, and 10 denotes a flexible conductor that electrically connects the movable energizing shaft 8 extending to the outside of the vacuum valve 1 and the lower side terminal conductor 9. . 11 is an upper junction provided at the end of the upper terminal conductor 4 extending outside the insulating frame 2, and 12 is a lower junction provided at the end of the lower terminal conductor 9 extending outside the insulating frame 2. is there.

  Reference numeral 13 denotes an insulating rod for electrically insulating the vacuum valve 1 side from an operation mechanism section 14 to be described later. One side 13a of the insulating rod 13, that is, the upper end side is outside the vacuum valve 1 of the movable energizing shaft 8. The other end 13 b of the insulating rod 13, that is, the lower end side is inserted into the through hole 3 a of the base frame 3 and is located in the base frame 3. Reference numeral 13 c denotes a pleat portion provided between one side 13 a and the other side 13 b of the insulating rod 13. Reference numeral 14 denotes an operation mechanism unit for driving the movable energizing shaft 8, and as an example, the figure is attached on a metal base frame 3 on the ground potential side. The outer wall of the operation mechanism unit 14 is composed of a metal frame body 14a on the ground potential side. The operation rod 14b is driven by a drive source of the operation mechanism unit 14 (not shown). Reference numeral 15 denotes a support shaft whose axis is disposed so as to be perpendicular to the opening / closing direction between the fixed side electrode 5 and the movable side electrode 7 of the vacuum valve 1, that is, the axis of the insulating rod 13. 14 is supported in the base frame 3 to which 14 is attached. Reference numeral 16 denotes a drive lever fixed to the support shaft 15. One side 16 a of the drive lever 16 is connected to the operation rod 14 b of the operation mechanism section 14 by a pin 17, and the support shaft 15 is rotated via the drive lever 16. Let The other side 16b of the drive lever 16 is rotatably connected to the other side 13b, which is the lower end side of the insulating rod 13, by a pin 18.

  19 is a member in which one side 19a is disposed between the one side 13a and the other side 13b of the insulating rod 13 via the insulating rod 13 and a predetermined gap, and the other side 19b is on the ground potential side. These are metal insulating creepage distance adjusting means attached in the vicinity of the through hole 3a of the metal base frame 3. The insulating creepage distance adjusting means 19 is composed of an L-shaped plate member as an example. In addition, one side 19a of the insulation creepage distance adjusting means 19 formed of an L-shaped plate member is disposed, for example, in the vicinity of the lowermost pleat portion 13c of the plural pleat portions 13c of the insulating rod 13, and It corresponds to the rated voltage of medium capacity. That is, when the insulation creepage distance adjusting means 19 is not provided, it corresponds to the large-capacity rated voltage of the switchgear.

  Next, the operation will be described. In the switchgear according to the first embodiment described above, the operating rod 14b is driven by a drive source (not shown) of the operating mechanism unit 14, and one side 16a of the drive lever 16 connected to the operating rod 14b by the pin 17 is pushed down. That is, the drive lever 16 rotates counterclockwise around the axis of the support shaft 16 together with the support shaft 16 in conjunction with the drive of the operating rod 14b. As the drive lever 16 rotates counterclockwise, the insulating rod 13 connected to the other side 16b of the drive lever 16 by the pin 18 is pushed upward. When the insulating rod 13 is pushed upward, the movable energizing shaft 8 connected to the one side 13a that is the upper end side of the insulating rod 13 moves upward in conjunction with the insulating rod 13, and the movable energizing side of the movable energizing shaft 8 is moved. The electrode 7 contacts the fixed side electrode 5 of the fixed energizing shaft 6. When the fixed electrode 5 and the movable electrode 7 are in contact with each other, the gap between the electrodes of the vacuum valve 1 is closed.

  When opening the electrodes of the vacuum valve 1, the operation rod 14 b is driven in the opposite direction to the operation at the time of closing by a drive source (not shown) of the operation mechanism unit 14, and a pin 17 is connected to the operation rod 14 b. The one side 16a of the drive lever 16 connected by the above is pushed up, that is, the drive lever 16 rotates together with the support shaft 16 clockwise around the axis of the support shaft 16 in conjunction with the drive of the operation rod 14b. As the drive lever 16 rotates clockwise, the insulating rod 13 connected to the other side 16b of the drive lever 16 by the pin 18 is pushed downward. When the insulating rod 13 is pushed down, the movable energizing shaft 8 connected to the one side 13a which is the upper end side of the insulating rod 13 moves downward in conjunction with the insulating rod 13, and the movable side of the movable energizing shaft 8 is moved. The contact state is released when the electrode 7 is separated from the fixed side electrode 5 of the fixed energizing shaft 6. When the contact state between the fixed electrode 5 and the movable electrode 7 is released, the electrode of the vacuum valve 1 is opened.

  By the way, the configuration of FIG. 17 described above corresponds to the rated voltage of a large capacity of the switchgear, and when it corresponds to the rated voltage of the medium capacity of the switchgear, it is the case of the conventional device described above. It was necessary to use the insulation rod 13 and the pleat portion 13c corresponding to the rated voltage of the medium capacity. However, according to the first embodiment, the insulating rod 13 and the pleat portion 13c are the same, and the movable energizing portion on one side 13a of the insulating rod 13 and, for example, a metal base frame on the ground potential side In order to reduce the insulation creepage distance to the distance corresponding to the rated voltage of the medium capacity of the switchgear, one side 19a of the insulation creepage distance adjusting means 19 formed of an L-shaped plate member is connected to, for example, an insulation rod It arrange | positions in the vicinity of the lowermost pleat part 13c of the 13 pleat part 13c, and the withstand voltage level between the ground is lowered as an insulation creepage distance corresponding to the rated voltage of the medium capacity of the switchgear.

  As described above, according to the first embodiment, by using the same insulating rod 13 and the pleat portion 13c with the simple configuration of providing the insulation creeping distance adjusting means 19, the medium capacity rated voltage for the switchgear is used. The insulation creepage distance corresponding to can be secured. As a result, it is possible to standardize the parts of the switchgear, to achieve mass production, and to obtain a switchgear that can reduce costs.

Embodiment 2.
A second embodiment of the present invention will be described with reference to FIG. FIG. 2 is a cross-sectional side view of an essential part showing a switchgear according to Embodiment 2 of the present invention.

  In the second embodiment, the one side 20a is arranged between the one side 13a and the other side 13b of the insulating rod 13 via the insulating rod 13 and a predetermined gap, and the other side 20b is on the ground potential side. As an example, a certain member is a metal insulating creepage distance adjusting means attached in the vicinity of the through hole 3 a of the metal base frame 3. The insulating creepage distance adjusting means 20 is composed of an L-shaped plate member as an example. In addition, one side 20a of the insulation creepage distance adjusting means 20 formed of an L-shaped plate member is disposed, for example, in the vicinity of the second fold portion 13c from the bottom of the plurality of fold portions 13c of the insulating rod 13, It corresponds to the rated voltage of the small capacity of the switchgear.

  According to the second embodiment, the insulating rod 13 and the pleat portion 13c are the same, and the movable energizing portion on one side 13a of the insulating rod 13 and the metal base frame 3 on the ground potential side, for example, In order to reduce the insulation creepage distance between the two to a distance corresponding to the rated voltage of the small capacity of the switchgear, that is, to further reduce the insulation creepage distance according to the first embodiment, the L-shaped plate member For example, one side 20a of the insulation creepage distance adjusting means 20 is arranged in the vicinity of the second pleat 13c from the bottom of the multiple pleats 13c of the insulating rod 13, and can be used for a small capacity rated voltage of the switchgear. As the insulation creepage distance, the withstand voltage level between the ground is further lowered than the withstand voltage level between the ground according to the first embodiment.

  As described above, according to the second embodiment, by using the same insulating rod 13 and the pleat portion 13c with the simple configuration of providing the insulation creeping distance adjusting means 20, the small capacity rated voltage for the switchgear can be used. The insulation creepage distance corresponding to can be secured. As a result, it is possible to standardize the parts of the switchgear, to achieve mass production, and to obtain a switchgear that can reduce costs.

  As described above, the same insulating rod 13 and pleat portion 13c can be used for a large-capacity rated voltage of the switchgear, a medium-capacity rated voltage of the switchgear, and a small-capacity rated voltage of the switchgear. Therefore, it is possible to standardize the parts of the switchgear, to achieve mass production, and to obtain a switchgear that can reduce costs.

Embodiment 3.
A third embodiment of the present invention will be described with reference to FIG. FIG. 3 is a cross-sectional plan view of an essential part showing a switchgear according to Embodiment 3 of the present invention.

  In the third embodiment, an elongated hole 19c is formed on one side 19a of the insulation creepage distance adjusting means 19, and the spatial insulation distance between the one side 19a of the insulation creepage distance adjusting means 19 and the pleat portion 13c of the insulation rod 13 is set. The one side 19a of the insulation creepage distance adjusting means 19 is adjusted and fixed to the base frame 3 by the bolt 21.

  According to the third embodiment, the space insulation distance between the one side 19a of the insulation creepage distance adjusting means 19 and the pleat portion 13c of the insulation rod 13 can be easily adjusted.

Embodiment 4.
Embodiment 4 of the present invention will be described with reference to FIG. 4 is a cross-sectional plan view of an essential part showing a switchgear according to Embodiment 3 of the present invention.

  In the fourth embodiment, a long hole 20c is formed on one side 20a of the insulation creepage distance adjusting means 20, and the spatial insulation distance between the one side 20a of the insulation creepage distance adjusting means 20 and the pleat portion 13c of the insulation rod 13 is set. The one side 20a of the insulation creepage distance adjusting means 20 is fixed to the base frame 3 with bolts 22 by adjustment.

  According to the fourth embodiment, the space insulation distance between the one side 20a of the insulation creepage distance adjusting means 20 and the pleat portion 13c of the insulation rod 13 can be easily adjusted.

Embodiment 5.
A fifth embodiment of the present invention will be described with reference to FIGS. FIG. 5 is a cross-sectional side view of an essential part showing a switchgear according to Embodiment 5 of the present invention. 6 is a view of an insulation creeping distance adjusting means portion in a switchgear according to Embodiment 5 of the present invention as viewed from the left side of FIG. FIG. 7 is an enlarged sectional side view showing a main part of a switchgear according to Embodiment 5 of the present invention. FIG. 8 is a view of the insulation creepage distance adjusting means in the switchgear according to Embodiment 5 of the present invention, as viewed from the left side of FIG.

  In the first and second embodiments described above, the insulation creepage distance adjusting means 19 for the rated voltage of the medium capacity of the switchgear and the insulating creepage distance adjusting means 20 for the rated voltage of the small capacity of the switchgear are provided. Each of the L-shaped plate members has different height direction dimensions. In the fifth embodiment, a single insulation creepage distance adjusting means 23 can be used for the rated voltage of the medium capacity of the switchgear and the rated voltage of the small capacity of the switchgear.

  The insulation creepage distance adjusting means 23 in the fifth embodiment is configured as follows. A member in which one side 24a of the base member 24 made of an L-shaped plate member is disposed in the vicinity of the pleated portion 13c of the insulating rod 13 and the other side 24b is on the ground potential side. The figure shows, as an example, the metal base frame 3 A moving long hole 24c that is attached in the vicinity of the through hole 3a and extends in the vertical direction is formed on one side 24a of the base member 24. An adjusting body 25, which is arranged on the insulating rod 13 side on one side 24a of the base material 24 and is formed with a screw (not shown) on the lower side, is arranged via a fold portion 13c of the insulating rod 13 and a predetermined gap. . In the adjusting body 25, a bolt 26 is screwed into a screw of the adjusting body 25 through a moving long hole 24 c formed on the one side 24 a of the base member 24, and the adjusting body 25 is tightened to the one side 24 a of the base member 24. Is held in. The base material 24, the adjusting body 25, and the bolt 26 constitute an insulating creepage distance adjusting means 23.

  5 and 6, the adjusting body 25 is disposed, for example, in the vicinity of the lowermost pleat portion 13 c of the plural pleat portions 13 c of the insulating rod 13, and the insulation creepage corresponding to the rated voltage of the medium capacity of the switchgear. The case where the withstand voltage level between the grounds is lowered as the distance is shown, and the same effect as in the first embodiment described above is obtained.

  In FIGS. 7 and 8, the adjusting body 25 is moved upward and is disposed, for example, in the vicinity of the second pleat portion 13c from the bottom of the plural pleat portions 13c of the insulating rod 13, and the small capacity of the switchgear. The case where the withstand voltage level with respect to the ground is lowered as the insulation creepage distance corresponding to the rated voltage of the present invention is shown, and the same effects as those of the second embodiment described above are obtained. The adjustment body 25 is moved upward by slightly loosening the bolt 26 to move the adjustment body 25 upward from the bottom of the moving long hole 24c formed on the one side 24a of the base member 24 to thereby move the bolt 26. Can be held on one side 24a of the substrate 24.

  As described above, in the fifth embodiment, the single insulation creepage distance adjusting means 23 is used to adjust the movement of the adjusting body 25 in the vertical direction so that the rated voltage for the medium capacity of the switchgear and the rated voltage for the small capacity of the switchgear can be obtained. It can be used in correspondence with both.

Embodiment 6.
A sixth embodiment of the present invention will be described with reference to FIG. FIG. 9 is a cross-sectional side view of an essential part showing a switchgear according to Embodiment 6 of the present invention.

  In this sixth embodiment, the case of an insulating creepage distance adjusting means comprising a metal bolt 27 is shown, and the head portion 27a of the bolt 27 is located between one side 13a and the other side 13b of the insulating rod 13. A member which is disposed through the insulating rod 13 and a predetermined gap and the screw portion 27b of the bolt 27 is on the ground potential side, for example, is screwed in the vicinity of the through hole 3a of the metal base frame 3 as an example. . The head portion 27a of the bolt 27, which is the insulation creepage distance adjusting means, is disposed, for example, in the vicinity of the lowermost pleat portion 13c of the plural pleat portions 13c of the insulating rod 13, and is used for the rated voltage of the medium capacity of the switchgear. It corresponds.

  According to the sixth embodiment, the same insulating rod 13 and pleat portion 13c are used, and the movable energizing portion on one side 13a of the insulating rod 13 and the metal base frame 3 on the ground potential side, for example, In order to reduce the insulation creepage distance between the heads 27a of the bolts 27, which are the insulation creepage distance adjusting means, of the plurality of pleat portions 13c of the insulation rod 13, for example. Arranged in the vicinity of the lowermost fold 13c, the withstand voltage level between the ground and the ground is reduced as an insulation creepage distance corresponding to the rated voltage of the medium capacity of the switchgear.

  Thus, also in this Embodiment 6, there exists an effect similar to Embodiment 1 mentioned above. In the sixth embodiment, it is only necessary to screw the bolt 27, which is an insulation creepage distance adjusting means, to the base frame 3, and the configuration can be made simpler than the first embodiment described above.

Embodiment 7.
A seventh embodiment of the present invention will be described with reference to FIG. FIG. 10 is a cross-sectional side view of an essential part showing a switchgear according to Embodiment 7 of the present invention.

  In this seventh embodiment, the case of an insulating creepage distance adjusting means comprising a metal bolt 28 is shown, and the head portion 28a of the bolt 28 is located between one side 13a and the other side 13b of the insulating rod 13. A member which is disposed through the insulating rod 13 and a predetermined gap and the screw portion 28b of the bolt 28 is on the ground potential side, for example, is screwed in the vicinity of the through hole 3a of the metal base frame 3 as an example. . The heads 28a of the bolts 28, which are the insulation creepage distance adjusting means, are disposed, for example, in the vicinity of the second pleats 13c from the bottom of the pleats 13c of the insulating rod 13, and the small capacity rating of the switchgear. It is for voltage.

  According to the seventh embodiment, the insulating rod 13 and the pleat portion 13c are the same, and the movable energizing portion on one side 13a of the insulating rod 13 and the metal base frame 3 on the ground potential side, for example, In order to reduce the insulation creepage distance between the heads 28a of the bolts 28 as the insulation creepage distance adjusting means, for example, of the plurality of pleats 13c of the insulation rod 13 Arranged in the vicinity of the second pleat 13c from the bottom, the withstand voltage level between the ground and the insulation creepage distance corresponding to the rated voltage of the small capacity of the switchgear is further lowered from that of the sixth embodiment.

  Thus, also in this Embodiment 7, there exists an effect similar to Embodiment 2 mentioned above. Further, in the seventh embodiment, it is only necessary to screw the bolt 28, which is an insulation creepage distance adjusting means, to the base frame 3, and the configuration can be made simpler than the second embodiment described above.

Embodiment 8.
An eighth embodiment of the present invention will be described with reference to FIG. FIG. 11 is a cross-sectional side view of an essential part showing a switchgear according to Embodiment 8 of the present invention.

  In the eighth embodiment, a case of an insulating creepage distance adjusting means made of a metal-made long adjusting bolt 29 is shown, and the head 29a of the adjusting bolt 29 is connected to one side 13a and the other side 13b of the insulating rod 13. A member in which the threaded portion 29b of the adjusting bolt 29 is on the ground potential side, and is illustrated as an example, in the vicinity of the through hole 3a of the metal base frame 3 It is screwed in freely. In FIG. 11, the head 29a of the adjusting bolt 29, which is the insulation creepage distance adjusting means, is disposed, for example, in the vicinity of the second pleated portion 13c from the bottom of the pleated portions 13c of the insulating rod 13, and It is in a state corresponding to the rated voltage of a small capacity.

  According to the eighth embodiment, the insulation creepage distance between the movable current-carrying portion on one side 13a of the insulating rod 13 and the metal base frame 3 on the ground potential side, for example, is the small rated voltage of the switchgear. For example, the head 298a of the adjusting bolt 29, which is an insulation creepage distance adjusting means, is disposed in the vicinity of the second fold 13c from the bottom of the plurality of folds 13c of the insulating rod 13, The withstand voltage level to ground is lowered as the insulation creepage distance corresponding to the rated voltage of the small capacity of the switchgear.

  In such a state, when the withstand voltage level between the ground and the insulation creepage distance corresponding to the rated voltage of the medium capacity of the switchgear is increased, by tightening the adjustment bolt 29, the screw portion 29b of the adjustment bolt 29 is The base frame 3 may be further screwed and tightened until the head portion 29a of the adjustment bolt 29 is positioned in the vicinity of the lowermost pleat portion 13c of the plural pleat portions 13c of the insulating rod 13, for example.

  As described above, in the eighth embodiment, the vertical position of the head 29a of the adjustment bolt 29 can be adjusted by the advance / retreat adjustment of the adjustment bolt 29 which is one insulating creepage distance adjusting means. It can be used for both small voltage rated voltage and medium voltage rated voltage of switchgear.

Embodiment 9.
A ninth embodiment of the present invention will be described with reference to FIGS. 12 and 13 are cross-sectional side views of main parts showing a switchgear according to Embodiment 9 of the present invention.

  In each of these drawings, the through hole 3b of the metal base frame 3 on the ground potential side is configured to be larger than the through hole 3a in each of the above-described embodiments, and FIG. The insulation creepage distance E1 corresponds to the rated voltage.

  In this state, the insulation creepage distance E2 corresponding to the rated voltage of the medium capacity of the switchgear is configured as shown in FIG. In FIG. 13, 30 is a member in which one side 30a is disposed between one side 13a and the other side 13b of the insulating rod 13 via the insulating rod 13 and a predetermined gap, and the other side 30b is on the ground potential side, The figure shows, as an example, a metal insulating creepage distance adjusting means attached in the vicinity of the through hole 3b of the metal base frame 3. This insulating creepage distance adjusting means 30 is constituted by a cross-sectional Z-shaped plate member as an example. In addition, one side 30a of the insulation creepage distance adjusting means 30 formed of a Z-shaped plate member is disposed, for example, in the vicinity of the other side 13b located in the base frame 3 of the insulating rod 13, and is located inside the switchgear. It corresponds to the capacity voltage rating.

  According to the ninth embodiment, the insulating rod 13 and the pleat portion 13c are the same, and the movable energizing portion on one side 13a of the insulating rod 13 and the metal base frame 3 on the ground potential side, for example, In order to reduce the insulation creepage distance between the two to the distance corresponding to the rated voltage of the medium capacity of the switchgear, one side 30a of the insulation creepage distance adjusting means 30 formed of a Z-shaped plate member is connected to, for example, the insulation rod 13 It is arranged in the vicinity of the other side 13b located in the base frame 3, and the withstand voltage level to ground is lowered as an insulation creepage distance E2 corresponding to the rated voltage of the medium capacity of the switchgear.

  Thus, according to the ninth embodiment, with the simple configuration of providing the insulation creepage distance adjusting means 30, the same insulating rod 13 and pleat portion 13c are used, and the rated capacity voltage for the medium capacity of the switchgear is used. The insulation creepage distance corresponding to can be secured. As a result, it is possible to standardize the parts of the switchgear, to achieve mass production, and to obtain a switchgear that can reduce costs.

Embodiment 10 FIG.
A tenth embodiment of the present invention will be described with reference to FIG. FIG. 14 is a cross-sectional side view of an essential part showing a switchgear according to Embodiment 10 of the present invention.

  In the tenth embodiment, the insulation creepage distance E3 corresponding to the rated voltage of the small and medium capacity of the switchgear is configured as shown in FIG. In FIG. 14, 31 is a member in which one side 31a is disposed between one side 13a and the other side 13b of the insulating rod 13 via the insulating rod 13 and a predetermined gap, and the other side 31b is on the ground potential side, The figure shows, as an example, a metal insulating creepage distance adjusting means attached in the vicinity of the through hole 3b of the metal base frame 3. The insulating creepage distance adjusting means 31 is composed of a Z-shaped plate member as an example. In addition, one side 31a of the insulation creepage distance adjusting means 31 formed of a Z-shaped plate member is disposed, for example, in the vicinity of the other side 13b located at the same level as the upper surface of the base frame 3 of the insulating rod 13, and is opened and closed. It corresponds to the rated voltage of the small capacity of the device.

  According to the tenth embodiment, the insulating rod 13 and the pleat portion 13c are the same, and the movable energizing portion on one side 13a of the insulating rod 13 and the metal base frame 3 on the ground potential side, for example, In order to reduce the insulation creepage distance between the two to the distance corresponding to the rated voltage of the small capacity of the switchgear, one side 31a of the insulation creepage distance adjusting means 31 formed of a Z-shaped plate member is connected to, for example, the insulation rod 13 It is arranged in the vicinity of the other side 13b located at the same level as the upper surface of the base frame 3, and the withstand voltage level between the ground and the insulation creepage distance E3 corresponding to the rated voltage of the small capacity of the switchgear is higher than that of the ninth embodiment described above. Further down.

  As described above, according to the tenth embodiment, by using the same insulating rod 13 and the pleat portion 13c with the simple configuration of providing the insulation creepage distance adjusting means 31, the small capacity rated voltage for the switchgear can be obtained. The insulation creepage distance corresponding to can be secured. In addition, the same effects as those of the ninth embodiment described above are achieved.

Embodiment 11 FIG.
An eleventh embodiment of the present invention will be described with reference to FIG. FIG. 15 is a sectional side view of the main part showing a switchgear according to Embodiment 11 of the present invention.

  In each of the above-described embodiments, the case where the metal base frame 3 is used as the member on the ground potential side and the insulation creepage distance adjusting means is attached to the base frame 3 has been described. Shows a case where the member on the ground potential side is a metal frame body 14 a on the ground potential side on the outer wall of the operation mechanism unit 14.

  In FIG. 15, one side 32 a is arranged between the one side 13 a and the other side 13 b of the insulating rod 13 via the insulating rod 13 and a predetermined gap, and the other side 32 b is an outer wall of the operation mechanism unit 14. It is a metal insulating creepage distance adjusting means attached to the metal frame body 14a on the ground potential side. The insulating creepage distance adjusting means 32 is inserted through the insulating frame 2, and one side 32 a of the insulating creeping distance adjusting means 32 is disposed, for example, in the vicinity of the lowest pleat portion 13 c of the plurality of pleat portions 13 c of the insulating rod 13. This corresponds to the rated voltage of the medium capacity of the switchgear.

  In the eleventh embodiment, the same insulating rod 13 and pleat portion 13c are used, and the movable energizing portion on one side 13a of the insulating rod 13 and the metal base frame 3 on the ground potential side, for example, In order to reduce the insulation creepage distance between them to a distance corresponding to the rated voltage of the medium capacity of the switchgear, one side 32a of the insulation creepage distance adjusting means 32 is, for example, the lowest fold of the plurality of pleat portions 13c of the insulation rod 13 It arrange | positions in the part 13c vicinity, and the withstand voltage level between earth | grounds is lowered | hung as an insulation creepage distance corresponding to the rated voltage of medium capacity of a switchgear. That is, in the case of the eleventh embodiment, the insulation creepage distance adjusting means 32 is configured to short-circuit to the metal frame body 14a on the ground potential side on the outer wall of the operation mechanism section 14.

  As described above, according to the eleventh embodiment, with the simple configuration of providing the insulation creeping distance adjusting means 32, the same insulating rod 13 and the pleat portion 13c are used, and the medium capacity rated voltage for the switchgear is used. The insulation creepage distance corresponding to can be secured. As a result, it is possible to standardize the parts of the switchgear, to achieve mass production, and to obtain a switchgear that can reduce costs.

Embodiment 12 FIG.
A twelfth embodiment of the present invention will be described with reference to FIG. FIG. 16 is a cross-sectional side view of an essential part showing a switchgear according to Embodiment 12 of the present invention.

  In each of the above-described embodiments, the case where the metal base frame 3 is used as the member on the ground potential side and the insulation creepage distance adjusting means is attached to the base frame 3 has been described. Shows a case where the member on the ground potential side is a metal frame body 14 a on the ground potential side on the outer wall of the operation mechanism unit 14.

  In FIG. 16, one side 33 a is arranged between the one side 13 a and the other side 13 b of the insulating rod 13 via the insulating rod 13 and a predetermined gap, and the other side 33 b is the outer wall of the operation mechanism unit 14. It is a metal insulating creepage distance adjusting means attached to the metal frame body 14a on the ground potential side. The insulating creepage distance adjusting means 33 is inserted through the insulating frame 2, and one side 33a of the insulating creeping distance adjusting means 33 is disposed, for example, in the vicinity of the second fold portion 13c from the bottom of the plurality of fold portions 13c of the insulating rod 13. It corresponds to the small voltage rated voltage of the switchgear.

  In the twelfth embodiment, the insulating rod 13 and the pleat portion 13c are the same, and the movable energizing portion on one side 13a of the insulating rod 13 and the metal base frame 3 on the ground potential side, for example, In order to reduce the insulation creepage distance between them to a distance corresponding to the rated voltage of the small capacity of the switchgear, one side 33a of the insulation creepage distance adjusting means 33 is, for example, two steps from the bottom of the plurality of pleat portions 13c of the insulation rod 13 The withstand voltage level between the earth and the ground is lowered as an insulation creepage distance corresponding to the rated voltage of the small capacity of the switchgear, which is disposed in the vicinity of the pleat portion 13c. That is, in the case of the twelfth embodiment, the insulation creepage distance adjusting means 33 is configured to short-circuit to the metal frame body 14a on the ground potential side on the outer wall of the operation mechanism section 14.

  As described above, according to the twelfth embodiment, by using the same insulating rod 13 and pleat portion 13c with the simple configuration of providing the insulation creeping distance adjusting means 33, the medium capacity rated voltage for the switchgear is used. The insulation creepage distance corresponding to can be secured. As a result, it is possible to standardize the parts of the switchgear, to achieve mass production, and to obtain a switchgear that can reduce costs.

  The present invention relates to a switchgear that is used in, for example, a power transmission / distribution facility or a power receiving facility, and includes an insulating rod connected to a movable energizing unit and an operation mechanism unit that drives the insulating rod, and has a simple configuration and cost. This is suitable for realizing a switchgear that can be reduced.

DESCRIPTION OF SYMBOLS 1 Vacuum valve 2 Insulation frame 3 Base frame 8 Movable conduction shaft 13 Insulation rod 14 Operation mechanism part 14a Operation rod 15 Support shaft 16 Drive lever 19 Insulation creepage distance adjustment means 20 Insulation creepage distance adjustment means 23 Insulation creepage distance adjustment means 27 Insulation Creepage distance adjustment means 28 Insulation creepage distance adjustment means 29 Insulation creepage distance adjustment means 30 Insulation creepage distance adjustment means 31 Insulation creepage distance adjustment means 32 Insulation creepage distance adjustment means 33 Insulation creepage distance adjustment means

Claims (7)

  A vacuum valve disposed in the insulating frame, a support shaft disposed so that the shaft center is orthogonal to the opening / closing direction between the electrodes of the vacuum valve, and fixed to the support shaft so as to be orthogonal to the support shaft A driving lever, an operating rod connected to one side of the driving lever, the operating mechanism for rotating the support shaft via the driving lever, and one side connected to the movable energizing shaft of the vacuum valve; The other side is connected to the other side of the drive lever, moves in the opening and closing direction between the electrodes of the vacuum valve in conjunction with the rotation of the support shaft, and the one side is opened and closed between the electrodes of the vacuum valve. Insulating creepage distance adjustment means made of metal, which is arranged between the one side of the insulating rod and the other side of the insulating rod via the insulating rod and a predetermined gap, and is attached to a member having the other side on the ground potential side With Switchgear according to claim.   An insulating frame arranged on a metal base frame on the ground potential side, a vacuum valve arranged in the insulating frame, and an axis centered so as to be orthogonal to the opening / closing direction between the electrodes of the vacuum valve A support lever fixed to the support shaft so as to be orthogonal to the support shaft, and an operation rod connected to one side of the drive lever, and the support shaft is interposed via the drive lever. An operating mechanism section for rotating the one side, one side is connected to the movable current-carrying shaft of the vacuum valve, the other side is inserted into a through hole provided in the base frame and connected to the other side of the drive lever, Insulating rods that move in the opening and closing direction between the electrodes of the vacuum valve in conjunction with the rotation of the support shaft, open and close between the electrodes of the vacuum valve, one side of the insulating rod and the other side of the insulating rod Between said insulating rods Predetermined disposed with a gap, the other side of switchgear being characterized in that a metal insulator creepage distance adjusting means attached to the base frame at the ground potential side.   The switchgear according to claim 1 or 2, wherein the insulation creepage distance adjusting means is an L-shaped plate member.   The switchgear according to claim 3, wherein the L-shaped plate member can be adjusted to an arbitrary position.   The switchgear according to claim 1 or 2, wherein the insulation creepage length adjusting means is a bolt.   The switchgear according to claim 5, wherein the bolt can be adjusted to an arbitrary position.   3. The insulating creepage distance adjusting means is attached to the base frame in the vicinity of the through-hole that is formed to be large, and one side is arranged with a predetermined gap from the other side of the insulating rod. The switchgear described in 1.

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