JP2007236053A - Disconnector grounding switch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disconnector grounding switch capable of miniaturizing a tank diameter, while ensuring a necessary relative insulating distance and necessary ground insulation distance, reducing a cost. <P>SOLUTION: In the inside of a tank 1 filled up with insulating gas 2, three-phase conductors 3, 4, 5 are each positioned of each of apices of an isosceles triangle, and the three-phase conductors 3, 4, 5 are arranged so as to form a staggered arrangement across the center line of insulating rods 6, 7, 8. Rotary turnover devices 16a, 16b for reverting the rotation of a pinion gear 13 are provided on both sides of the pinion gear 13 so that three-phase movable conductors 9, 10, 11 have the same sliding direction. The rotary turnover device 16a provided on an A-phase side is fixed on the insulating rod 7, and the rotary turnover device 16b provided on a C-phase side is fixed on the insulating rod 8. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a disconnector grounding switch that is configured to simultaneously open and close disconnecting portions for three phases by a pinion and a rack.

  In general, there are various drive systems for the disconnect switch ground switch used in the gas insulated switchgear. Among them, a disconnecting switch grounding switch in which a three-phase switching unit is housed in a tank filled with an insulating gas often drives the switching unit by rotating a rod-shaped insulator. As such a disconnector grounding switch, a three-phase switching unit is arranged at each vertex of an isosceles triangle, a gear box for moving the switching unit is arranged in the space of the switching unit and the operating device, and the gear box There is one that operates by connecting the opening / closing part with an insulator and transmitting the force to the opening / closing part (see, for example, Patent Document 1).

  As another example, three-phase opening and closing parts as shown in FIGS. 11 and 12 are arranged in a straight line, and the parts that drive each opening and closing part are rotated by a rod-like insulator, so that There are also structures that transmit operating force.

That is, in the disconnector ground switch shown in FIGS. 11 and 12, the three-phase conductors 3, 4, and 5 are linearly arranged inside the tank 1 filled with the insulating gas 2 such as SF ₆ gas. In these conductors 3, 4, and 5, rod-like movable conductors 9, 10, and 11 that are slidable linearly are accommodated, respectively. These movable conductors 9, 10, and 11 are fitted into the recesses of the three-phase conductors 3 ′, 4 ′, and 5 ′ that are arranged to face each other, so that the three-phase conductors 3-3 ′ and 4-4 are provided. The disconnecting portion is configured to connect '5-5'. The movable conductors 9, 10, 11 and the conductors 3, 4, 5 are electrically connected by a contact 17. In this specification, these three-phase conductors 3-3 ′, 4-4 ′, and 5-5 ′ are referred to as A, B, and C phases in order from the conductor that is closest to the operation device 18. In FIG. 12, among these three-phase conductors, B-phase conductors 4, 4 ′, and 10 are shown.

  A rack 15 is fixed to the movable conductors 9, 10, and 11, and the pinion gears 12, 13, and 14 disposed inside the conductors 3, 4, and 5 are engaged with each other to move the rack 15. The conductors 9, 10, and 11 are configured to be able to slide linearly in the same direction at the same time.

  The pinion gear 12 and the pinion gear 13 are connected by an insulating rod 7. Similarly, the pinion gear 13 and the pinion gear 14 are connected by an insulating rod 8. Further, the gas seal portion 19 and the pinion gear 12 are connected by an insulating rod 6, and these insulating rods 6, 7, and 8 are arranged so that their center lines are located on the same line.

  These three-phase conductors 3, 4, and 5 are arranged such that the distance between the conductor centers adjacent to each other ensures the inter-phase insulation distance L, and the distance from the tank secures the ground insulation distance D. In addition, the tank internal diameter of the disconnector grounding switch shown in FIG.11 and FIG.12 comprised in this way is "r".

In the conventional disconnector grounding switch configured as described above, the operating force transmitted from the operating device 18 through the gas seal portion 19 causes the pinion gear 12 to rotate by the insulating rod 6, and the rotational force is transmitted to the rack. At 15, it is converted into a linear sliding force, and the movable conductor 9 is slid linearly. At the same time, the pinion gear 12 rotates the insulating rod 7 and rotates the pinion gear 13 to linearly slide the movable conductor 10. Similarly, the pinion gear 13 rotates the insulating rod 8 and also rotates the pinion gear 14. The movable conductor 11 is linearly slid by rotating. Thereby, the movable conductors 9, 10, and 11 for three phases can be simultaneously driven in the same direction.
Japanese Patent No. 2878750

  However, in the case of the disconnector grounding switch in which the three-phase switch is arranged at each vertex of the isosceles triangle as described above, a large space is required to arrange the gear box in the space between the switch and the operating device. For this reason, it is difficult to reduce the size of the equipment, and the inner diameter of the tank is increased, which increases the cost.

  Also, the three-phase opening and closing parts as shown in FIGS. 11 and 12 are arranged in a straight line, and the operation force of the operating device is transmitted by rotating the parts that drive the opening and closing parts with a rod-like insulator. In the case of the configured disconnector grounding switch, although there is a merit that the number of components is reduced, the tank inner diameter “r” is increased in order to secure the inter-phase insulation distance L and the ground-to-ground insulation distance D. In addition, there is a problem that the cost increases.

  The present invention has been proposed to solve the above-described problems of the prior art, and the object thereof is necessary in a disconnector grounding switch that drives an opening / closing part by rotating an insulator. An object of the present invention is to provide a disconnector grounding switch capable of minimizing the tank diameter while reducing the cost while ensuring the interphase insulation distance and the ground insulation distance.

  In order to achieve the above object, the invention according to claim 1 is arranged such that a three-phase conductor is disposed inside a tank filled with an insulating gas, and a linearly slidable disconnecting portion is provided inside the three-phase conductor. The movable conductor of each disconnecting portion is linearly slid by the engagement between the rack and the pinion gear, and the rotating operation of the insulating rod connected to the operating device provided outside the tank is performed. In the disconnector grounding switch configured to transmit to the pinion gear, the three-phase movable conductors are arranged in a staggered manner across the center line of the insulating rod, and rotate between the pinion gears of adjacent phases. A reversing device is installed, and the rotation reversing device is configured so that the operation directions of the three-phase movable conductors are the same.

  According to the invention described in claim 1 having the above-described configuration, the interphase insulation distance L is minimized as much as possible by arranging the three-phase conductors in a staggered manner across the center line of the insulating rod. The insulation distance D between the tank and the ground can be minimized, and the inner diameter of the tank can be minimized.

  According to the present invention, in the disconnector grounding switch that drives the switch by rotating the insulator, the tank diameter can be minimized while ensuring the necessary inter-phase insulation distance and the ground-to-ground insulation distance, At the same time, it is possible to provide a disconnector grounding switch that can reduce the cost.

  Hereinafter, an embodiment (hereinafter referred to as an embodiment) of a disconnector grounding switch according to the present invention will be specifically described with reference to the drawings. In addition, the same code | symbol is attached | subjected about the member same as the conventional type shown in FIG.11 and FIG.12, and description is abbreviate | omitted.

(1) First Embodiment (1-1) Configuration In this embodiment, as shown in FIGS. 1 and 2, three-phase conductors 3, 4, 5 are provided inside a tank 1 filled with an insulating gas 2. It is arranged to be located at each vertex of the isosceles triangle. In this case, only the B-phase movable conductor 10 out of the movable conductors 9, 10, 11 arranged inside the three-phase conductors 3, 4, 5 extends across the center line of the insulating rods 7, 8. It arrange | positions on the opposite side to the movable conductors 9 and 11 of a phase and C phase. In other words, the three-phase conductors 3, 4, 5 are arranged in a staggered manner across the center lines of the insulating rods 6, 7, 8. Note that the isosceles triangles formed by the three-phase conductors 3, 4, and 5 can have the same pitch as the electrode arrangement of the insulating spacer (not shown).

  In addition, the B-phase movable conductor 10 is disposed on the opposite side of the A-phase and C-phase movable conductors 9 and 11 across the center line of the insulating rods 7 and 8, so that the conventional type shown in FIG. As described above, when the pinion gear 13 disposed inside the B-phase conductor 4 is fixed to the insulating rod 7 and the insulating rod 8, the sliding direction of the movable conductor 10 is opposite to the movable conductors 9 and 11. .

  Therefore, in this embodiment, rotation reversing devices 16a and 16b for reversing the rotation are provided on both sides of the pinion gear 13 so that the sliding directions of the three-phase movable conductors 9, 10, and 11 are the same. Is provided. The rotation reversing device 16 a provided on the A phase side is fixed to the insulating rod 7, and the rotation reversing device 16 b provided on the C phase side is fixed to the insulating rod 8.

  The three-phase conductors 3, 4, and 5 have an inter-conductor distance between adjacent conductors to ensure an inter-phase insulation distance L and a ground insulation distance D from the tank, and an inter-phase insulation distance L and the tank The tank inner diameter “R” is arranged to be as small as possible while minimizing the ground insulation distance D.

(1-2) Action / Effect In the present embodiment configured as described above, the operating force transmitted from the operating device 18 via the gas seal portion 19 rotates the pinion gear 12 by the insulating rod 6, and The rotational force is converted into a linear sliding force by the rack 15, and the movable conductor 9 is linearly slid.

  At the same time, the pinion gear 12 rotates the insulating rod 7, and the rotation inversion device 16 a rotates, so that the pinion gear 13 rotates in the opposite direction to the pinion gear 12. As a result, the movable conductor 10 can be linearly slid in the same direction as the movable conductor 9.

  Further, the rotation of the pinion gear 13 is reversed by the rotation reversing device 16b, the pinion gear 14 is rotated through the insulating rod 8, the rotational force is converted into a linear sliding force by the rack 15, and the movable conductor 11 is linearly slid. Move. Thereby, the three-phase movable conductors 9, 10, and 11 are driven simultaneously and in the same direction.

  In addition, the three-phase conductors 3, 4, and 5 are arranged so that the inter-phase insulation distance L between the A-B phase, the B-C phase, and the C-A phase is as short as possible, and is insulated between the A-B phases. Insulating the tank 7 from ground by disposing the insulating rod 8 between the B and C phases and arranging the conductors 3, 4, 5 in a staggered manner across the center line of the insulating rods 6, 7, 8 The distance D can also be minimized and the inner diameter “R” of the tank 1 can be minimized.

  As described above, according to the present embodiment, it is possible to configure an opening / closing portion that minimizes the interphase insulation distance L between the conductors 3, 4, and 5 and the insulation distance D between the tank 1 and the conductors 3, 4, and 5. In addition, since the inner diameter “R” of the tank 1 can be minimized, the disconnector grounding switch for three-phase operation can be reduced, and the cost can be reduced.

  In the present embodiment, the rotation inversion devices 16a and 16b are arranged on both sides of the pinion gear 13 so that the sliding directions of the movable conductors 9, 10, and 11 are the same. If the rotation inversion device 16 is arranged between the C phases, the operation directions of the movable conductors 9, 10, and 11 can be made the same direction. Therefore, the rotation reversing device may be installed on any of the conductors 3, 4, and 5 as long as the movable conductors 9, 10, and 11 are arranged in the same direction.

(2) Configuration of the Second Embodiment (2-1) In the present embodiment, as shown in FIGS. 3 and 4, the insulating rods 6, 7, and 8 are arranged so that their center lines are located on the same line. The point to do is the same as in the first embodiment, but the installation positions of the movable conductors 9, 10, 11 do not straddle the center lines of the insulating bars 6, 7, 8 and are configured in a staggered arrangement. Features.

  In the present embodiment, the transmission mechanism 20 including the first gear 20 a and the second gear 20 b is disposed between the pinion gear 13 and the insulating rod 7 and the insulating rod 8. That is, the first gear 20a is disposed between the insulating rod 7 and the insulating rod 8, and the second gear 20b is disposed so as to engage with the first gear 20a. The gear 20 b is configured to engage with the pinion gear 13.

(2-2) Action / Effect In this embodiment configured as described above, the transmission mechanism 20 including the first gear 20a and the second gear 20b is connected to the pinion gear 13, the insulating rod 7, and the insulating rod 8. By installing them in between, it is possible to make a simple structure that does not use the rotation inversion device 16 shown in the first embodiment. In the present embodiment, the transmission mechanism 20 is constituted by a gear, but the operation is equivalent even when other transmission mechanisms such as a belt and a chain are used.

  As described above, according to the present embodiment, the conductor arrangement is staggered while the inner diameter “R” of the tank 1 is minimized by housing the transmission mechanism 20 in the dead space between the tank 1 and the conductors 3 and 5. be able to. Therefore, similarly to the first embodiment, it is possible to configure an opening / closing portion that minimizes the interphase insulation distance L between the conductors 3, 4, 5 and the insulation distance D between the tank 1 and the conductors 3, 4, 5. In addition, since the inner diameter “R” of the tank 1 can be minimized, the disconnector grounding switch for three-phase collective operation can be reduced, and the cost can be reduced.

(3) Third Embodiment (3-1) Configuration In this embodiment, as shown in FIGS. 5 and 6, the insulating rods 6, 7, and 8 are arranged so that their center lines are located on the same line. The point to do is the same as in the first embodiment, but the installation position of the pinion gear 13 is shifted downward from the center position of the insulating rods 6, 7, 8, and the conductors 3, 4, 5 are arranged in an isosceles triangle. It is characterized by that. The isosceles triangle may have the same pitch as the electrode arrangement (equilateral triangle arrangement or isosceles triangle) of the insulating spacer (not shown).

  A rotation reversing device 26 for setting the rotation direction of the pinion gear 13 to be opposite to the rotation direction of the pinion gear 12 and the pinion gear 14 is installed between the insulating rod 7 and the insulating rod 8. It is comprised so that it may engage with. Then, when the rotation reversing device 26 rotates in the same direction as the pinion gear 12 and the pinion gear 14, the pinion gear 13 engaged with the rotation reversing device 26 is rotated in the direction opposite to the pinion gear 12 and the pinion gear 14. It is configured to be able to.

(3-2) Action / Effect In the present embodiment configured as described above, the rotation reversing device 26 is installed between the insulating rod 7 and the insulating rod 8, and the rotation reversing device 26 is engaged with the pinion gear 13. By doing so, the rotation and inverting device 26 can be made simple, and the cost can be reduced. In the present embodiment, the rotation and reversal device 26 is constituted by a gear, but the operation is equivalent even when other transmission mechanisms such as a belt and a chain are used.

  Thus, according to the present embodiment, as in the first embodiment, the interphase insulation distance L of the conductors 3, 4 and 5 and the insulation distance D between the tank 1 and the conductors 3, 4, and 5 are the minimum. Since the inner diameter “R” of the tank 1 can be minimized, the disconnector grounding switch for three-phase operation can be reduced, and the cost can be reduced. Further, the rotation / reversal device 26 can have a simpler structure than the rotation / reversal device 16 used in the first embodiment.

(4) Fourth Embodiment (4-1) Configuration In this embodiment, as shown in FIGS. 7 and 8, the insulating rod 6 of the second embodiment is the same as the configuration shown in the second embodiment. , 7 and 8 are formed as a single-piece insulating rod 21. In this case, the pinion gear 12, the pinion gear 14, and the first gear 20 a are fixed to the insulating rod 21 and are configured to rotate together with the insulating rod 21. In this embodiment, the insulating bars 6, 7, and 8 are all integrated, but at least two insulating bars may be integrated in consideration of assemblability and the like.

(4-2) Action / Effect In the present embodiment configured as described above, the structure of the insulating rod 21 can be simplified as compared with the second embodiment, so that the cost can be reduced. . Moreover, although the transmission apparatus 20 is comprised with the gear similarly to the said 2nd Embodiment, even if it uses other transmission mechanisms, such as a belt and a chain, an effect | action becomes equivalent.

  Thus, according to the present embodiment, the inter-phase insulation distance L between the conductors 3, 4, and 5 and the insulation distance D between the tank 1 and the conductors 3, 4, and 5 are minimized as in the second embodiment. Since the opening / closing section can be configured and the inner diameter “R” of the tank 1 can be minimized, the disconnector grounding switch for the three-phase collective operation can be reduced, and the cost can be reduced.

(5) Fifth Embodiment (5-1) Configuration In this embodiment, as shown in FIGS. 9 and 10, the insulating rod 6 of the third embodiment is the same as the configuration shown in the third embodiment. , 7 and 8 are formed as a single-piece insulating rod 21. In this case, the pinion gear 12, the pinion gear 14, and the rotation reversing device 26 are fixed to the insulating rod 21 and are configured to rotate together with the insulating rod 21. In this embodiment, the insulating bars 6, 7, and 8 are all integrated, but at least two insulating bars may be integrated in consideration of assemblability and the like.

(5-2) Action / Effect In the present embodiment configured as described above, the insulating rod 21 can be integrated by shifting the installation position of the pinion gear 13 downward from the center position of the insulating rod. Thereby, in addition to the effect of the said 3rd Embodiment, since the structure of the insulating rod 21 can be simplified further, cost can be reduced.

  Thus, according to the present embodiment, the inter-phase insulation distance L between the conductors 3, 4, and 5 and the insulation distance D between the tank 1 and the conductors 3, 4, and 5 are minimized as in the third embodiment. Since the opening / closing section can be formed and the inner diameter “R” of the tank 1 can be minimized, the disconnector grounding switch for three-phase operation can be reduced, and the cost can be reduced.

The block diagram which shows the internal structure of 1st Embodiment of the disconnector grounding switch which concerns on this invention. The sectional side view which shows the internal structure of the disconnector grounding switch of 1st Embodiment shown in FIG. The block diagram which shows the internal structure of 2nd Embodiment of the disconnector grounding switch which concerns on this invention. The sectional side view which shows the internal structure of the disconnector grounding switch of 2nd Embodiment shown in FIG. The block diagram which shows the internal structure of 3rd Embodiment of the disconnector grounding switch which concerns on this invention. The sectional side view which shows the internal structure of the disconnector grounding switch of 3rd Embodiment shown in FIG. The block diagram which shows the internal structure of 4th Embodiment of the disconnector grounding switch which concerns on this invention. The sectional side view which shows the internal structure of the disconnector grounding switch of 4th Embodiment shown in FIG. The block diagram which shows the internal structure of 5th Embodiment of the disconnector grounding switch which concerns on this invention. The sectional side view which shows the internal structure of the disconnecting switch grounding switch of 5th Embodiment shown in FIG. The block diagram which shows the internal structure of the conventional disconnecting switch grounding switch. The sectional side view which shows the internal structure of the conventional disconnecting switch grounding switch shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Tank 2 ... Insulating gas 3 ... Conductor 4, 4 '... Conductor 5 ... Conductor 6, 7, 8 ... Insulating rod 9, 10, 11 ... Movable conductor 12, 13, 14 ... Pinion gear 15 ... Rack 16, 26 ... Rotation reversing device 17 ... Contact 18 ... Operating device 19 ... Gas seal part 20 ... Transmission device 21 ... Insulating rod

Claims (4)

A three-phase conductor is arranged inside a tank filled with an insulating gas, and a movable conductor of a disconnectable portion that can slide linearly is housed inside the three-phase conductor, and the movable conductor of each disconnected portion is connected to the rack and the pinion gear. In the disconnector grounding switch configured to linearly slide by engagement and to transmit the rotational motion of the insulating rod connected to the operating device provided outside the tank to the pinion gear,
The three-phase movable conductor is configured in a staggered arrangement across the center line of the insulating rod,
A disconnector grounding opening / closing device, characterized in that a rotation reversing device is installed between pinion gears of each phase adjacent to each other, and the operation direction of the three-phase movable conductors is the same by this rotation reversing device. vessel. A three-phase conductor is arranged inside a tank filled with an insulating gas, and a movable conductor of a disconnectable portion that can slide linearly is housed inside the three-phase conductor, and the movable conductor of each disconnected portion is connected to the rack and the pinion gear. In the disconnector grounding switch configured to linearly slide by engagement and to transmit the rotational motion of the insulating rod connected to the operating device provided outside the tank to the pinion gear,
The three-phase movable conductor is configured in a staggered arrangement without straddling the center line of the insulating rod,
A disconnector grounding device, wherein a transmission device that transmits a rotational force in the same direction as the rotation direction of the insulating rod is engaged with a pinion gear that drives a movable conductor that is disposed farthest from the insulating rod. Switch. A three-phase conductor is arranged inside a tank filled with an insulating gas, and a movable conductor of a disconnectable portion that can slide linearly is housed inside the three-phase conductor, and the movable conductor of each disconnected portion is connected to the rack and the pinion gear. In the disconnector grounding switch configured to linearly slide by engagement and to transmit the rotational motion of the insulating rod connected to the operating device provided outside the tank to the pinion gear,
The three-phase movable conductor is configured in a staggered arrangement across the center line of the insulating rod,
The insulating rod includes a rotation reversing device that engages with a pinion gear that drives a movable conductor of a phase arranged on the opposite side of the insulating rod with respect to the other two phases, and the other two-phase movable conductor. The driving pinion gear is fixed,
A disconnector grounding switch characterized in that the three-phase movable conductors are operated in the same direction by the rotation reversing device.   4. The disconnection according to claim 2, wherein at least two of the insulating rods that transmit the rotational movement of the operating device to the three-phase conductor are integrated. 5. Earthing switch.

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