JPS6111043B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a double bus type closed switchgear in which a bus disconnector can be easily attached and detached.

[Technical background of the invention and its problems]

In order to reduce the size of this type of conventional closed-type switchgear, as shown in FIG. 6, the devices constituting the device are combined three-dimensionally. That is, an upright circuit breaker 1 is installed on a foundation, busbars 2 and 3 are placed on one side of the circuit breaker 1 at intervals and extend parallel to the foundation, and one busbar 2, which is closer to the circuit breaker 1, is placed on one side of the circuit breaker 1.
A T-connection type disconnector 4 is provided at the upper outlet of the other bus bar 3 so that it can be attached and removed from above, and an L-type connection type disconnector 5 is installed at the upper outlet of the other bus bar 3 so that it can be attached and detached from above. Sealed conduits 7 and 6 are provided between the opposing upper outlets of the circuit breaker 5 and between the other outlet of the disconnector 4 and a lower outlet provided on the side of the circuit breaker 1, respectively, and are detachable in the axial direction. A connecting circuit 8 on the busbar side is constructed, and a circuit breaker 1 is installed above this connecting circuit 8.
A line disconnector 9 and a cable head 10 are provided to connect the upper outlet of the line to form a connection on the line side.

However, in the sealed switchgear, the bus disconnectors 4 and 5 cut off the loop current when the busbars are switched, so it is necessary to remove them from the device in order to perform periodic maintenance and inspection of the contacts. In that case, the disconnector 5 can be easily attached and detached by disconnecting it from the sealed conduit 7, but the disconnector 4 can be installed by disconnecting the closed conduit 7 and also by disconnecting the closed conduit 6 on the circuit breaker 1 side. Attach and detach.
For this purpose, the circuit breaker 1 has to be moved to the opposite side of the disconnector, resulting in a large-scale work, requiring extra space and long man-hours, and causing inconvenient problems in that maintenance and inspection cannot be easily performed.

[Purpose of the invention]

The purpose of the present invention has been made in consideration of the above points, and the purpose is to easily and quickly attach and detach a disconnector for a busbar, and to standardize the disconnector. The objective is to provide a closed type switchgear that can be used.

[Summary of the invention]

According to the present invention, in order to achieve such an objective,
Connect one end of a straight conduit conductor to the outlet on the bus bar side provided perpendicularly to the longitudinal direction of the circuit breaker body, and sandwich the conduit conductor on both sides of the circuit breaker. In addition, first and second busbars are arranged horizontally and parallel to each other, orthogonal to the conduit conductor, and the opening portions of the first and second busbars are oriented in the direction of the conduit conductor. one end of an L-shaped connection type disconnector is connected to each of the first and second outlet parts, the other ends of each disconnector are set opposite to each other, and the opposite disconnector By connecting each end of the vessel to two ends of a T-shaped segmental connecting device, and connecting the remaining end of the T-shaped segmental connecting device to the other end of the conduit conductor, The disconnector can be easily and quickly attached and detached, and the disconnector can be standardized.

[Embodiments of the invention]

A first embodiment of the closed type switchgear of the present invention will be described below.
This will be explained with reference to FIGS. That is,
A horizontal circuit breaker 16 is installed on a foundation, and openings 16A and 16B are provided in a direction perpendicular to the longitudinal direction of the circuit breaker body, that is, in an upward direction in the figure. One end of the ascending linear conduit conductor 21 is connected.

Double busbars, that is, busbars 11A and 11B are installed on both sides of the conduit conductor 21 so as to sandwich the conduit conductor 21, and the busbars 11A and 11B are arranged horizontally in a direction orthogonal to the conduit conductor 21 and parallel to each other. and is supported by a pedestal 25.

The busbars 11A and 11B are provided with respective openings parallel to the conduit conductor 21, that is, at the top in the figure. In addition, one end of the L-shaped vertical side of the L-shaped connection type disconnectors 12A and 12B, that is, in the illustration, the disconnector 12A has an upside-down inverted L-shape, and the disconnector 12B has an inverted L-shape at one end of each vertical side. One end of the bus bar 11A, 11B is removably connected to the opening portion of each bus bar 11A, 11B from above. Therefore, the opening portions 13A and 13B at one end of the L-shaped lateral sides of the disconnectors 11A and 11B are opposed to each other.

The divisional connecting device 101 is formed in a T-shape, and one vertical end of the T-shape is connected to the conduit conductor 21, and both horizontal ends of the T-shape are connected to an L-shaped disconnector 12A, respectively. Each opening part 1 of 12B
3A and 13B, respectively. Note that the circuit breaker 16
A cable head 18 is connected to the other outlet 16B via a line disconnector 17.

As mentioned above, the divisional connection device 101 is formed in a T-shape, and the openings 13A, 13B of the disconnectors 12A, 12B are provided at both lateral ends of the T-shape.
are connected to each other, and one end of the T-shaped vertical side is connected to one end of the conduit conductor 21.

This segmental connection device 101 has a T-shaped casing 102, and flanges 103A and 103B formed at both lateral ends of this T-shape, that is, on the left and right sides of this casing 102 in the drawing, have bellows 104.
One ends of the bellows 104A, 104B are hermetically fixed by screws, and the other ends of the bellows 104A, 104B are provided with openings 13A, 1 of the disconnectors 12A, 12B.
3B are removably attached to the flange surfaces of the insulating spacers 14A and 14B, respectively, and airtightly tightened with screws. In addition, conductors 15 are drawn out from one electrode and supported by insulating spacers 14A and 14B at lead-out portions 13A and 13B of disconnectors 12A and 12B, respectively.
A and 15B are provided, respectively. Furthermore bellow 10
4A and 104B have studs (not shown) that expand and contract in the axial direction when attaching and detaching the disconnectors 12A and 12B, and by tightening these studs, the bellows and the disconnector can be separated and the disconnectors can be attached and detached. .

In addition, the openings at both ends of the T-shaped lateral sides of the T-shaped casing 102 and the disconnectors 12A, 12 as described above
A connection flange 103C connected to the outlet portions 13A and 13B of B, respectively, and opening at one end of the T-shaped vertical side, that is, downward in the figure, is connected to the end of the conduit conductor 21 drawn out from the circuit breaker 16 via an insulating spacer 22. It is removably connected. Furthermore, casing 1
On the opposite side of the connection part of the conduit conductor 21 of 02, there is a
A hand hole 105 is provided which is normally closed with a cover 105A.

Connection device 20 housed within casing 102
1 is the first, third, and second connection conductor 202A, 20
5,202B to form a T-shape. There are disconnectors 12 at both sides of this T-shape.
Conductor 15 of lead part 13A, 13B of A, 12B
A and 15B are removably connected to each other, and the vertical side of the T-shape, that is, the connecting conductor 205 is connected to the conduit conductor 21.
It is detachably connected to the conductor 23 of.

The first connecting conductor 202A is formed with a flange portion 203A forming a flat surface that is butted at one end,
The other end has a female contact 204A, and the outlet 13A of the disconnector 12A is connected via this contact 204A.
The conductor 15A is slidably fitted in the axial direction and connected to the conductor 15A.

The second connection conductor 202B has the same structure as the first connection conductor 202A described above, and has a flange portion 203B formed at one end and a female contact 204 at the other end.
B, and the disconnector 1 is connected via this contact 204B.
The conductor 15B is slidably fitted in the axial direction and connected to the conductor 15B provided at the opening 13B of the conductor 2B.

The third connection conductor 205 is connected to the first side of the T-shape,
A female contact 206 is provided at one end of the vertical side orthogonal to the second connection conductors 202A, 202B, and the conductor 23 provided at the end of the conduit conductor 21 is slid in the axial direction through this contact 206. The first and second connection conductors 2 are connected to each other through dynamic fitting, and the third connection conductor 205 is connected to the first and second connection conductors 205.
Flat surfaces 207A and 207B are formed, respectively, to abut against the surfaces facing 02A and 202B.

The first connection conductor 20 is placed on one flat surface 207A.
The flange portions 203A of 2A are butted and connected, and the second connecting conductor 202B is connected only to the other flat surface.
The flange portions 203B of the flange portions 203B are abutted and connected, and are fixed together by screws 208, and
A shield 209 is provided to improve the electric field distribution. This shield 209 can slide on the circumferential surfaces of the first and second connection conductors 202A and 202B.

Next, in the sealed switchgear of the present invention configured as described above, when only the L-shaped connection type disconnector 12A for one bus bar is removed for inspection, for example, the casing 12 of the divisional connection device 101 is removed. Open the hand hole 105, unfasten the screw 208, and connect the third connecting conductor 205 to the conductor 2
Remove it by pulling it out from 3.

Next, the bellows 1 on the right side of the casing 102
04A and the opening part 13A of the disconnector 12A are unfastened, the bellows 104 is compressed, and the bellows 104A and the disconnector 12A are separated to an appropriate gap S.

Subsequently, the first connecting conductor 202A is moved to the left in the figure by an operation from the hand hole 105, and the connecting conductor 202A is pulled out from the opening part 13A of the disconnector 12A, and the end thereof is attached to the bellows 1.
04, thereby allowing only the disconnector 12A to be removed from the bus bar 11A. Disconnector 12A
For reassembly after inspection, the above operations can be performed in the reverse order. When inspecting the disconnector 12A, the other disconnector 1
2B, when applying electricity, remove the first connecting conductor 202A and then connect the third connecting conductor 205.
is again connected to the conductor 23 of the conduit conductor 21, and the third connecting conductor 205 and the second connecting conductor 202B are butt connected and energized. In this case, it goes without saying that the hand hole 105 is sealed and the bellows 104A is covered with a cover 105B.

Furthermore, when inspecting only the disconnector 12B,
It is sufficient to carry out the inspection in the same manner as when inspecting the disconnector 12A described above.Also, when inspecting both the disconnectors 12A and 12B at the same time, it is possible to remove one disconnector according to the above order and then remove the other disconnector. can.

Next, another aspect of the present invention will be explained with reference to FIG. The same parts and parts having the same functions as those in FIG. 1 are given the same reference numerals. That is, an upright circuit breaker 16 is installed on a foundation, and outlet portions 16A and 16B are provided in a direction perpendicular to the longitudinal direction of the circuit breaker body, that is, in the left direction in the figure, and the outlet portion 16A on the busbar side is provided with a One end of a linear conduit conductor 21 is connected to the left in the figure.

Double busbars, that is, busbars 11A and 11B are installed on both sides of the conduit conductor 21 so as to sandwich the conduit conductor 21, and the busbars 11A and 11B are arranged horizontally in a direction orthogonal to the conduit conductor 21 and parallel to each other. ing.

The busbars 11A and 11B are parallel to the conduit conductor 21,
That is, the respective opening portions are provided in the left direction in the drawing.
In addition, one end of the L-shaped vertical side of the L-shaped connection type disconnectors 12A and 12B, that is, in the illustration, the disconnector 12A is L
The disconnector 12B is turned upside down with the vertical side facing down, and the disconnector 12B is placed with the vertical side of the L character facing down and the horizontal side facing down. The disconnector 12 can be attached and detached from the left side of the figure.
Connect one end of the vertical side of A and 12B, respectively. Therefore, the opening portions 13A and 13B are opposite to each other at one end of the L-shaped lateral sides of the disconnectors 12A and 12B.

and a T-shaped connecting device 10 for division.
One vertical end of the T-shape 1 is connected to the conduit conductor 21, and both horizontal ends of the T-shape are connected to the disconnector 12A, 1.
2B, respectively. Note that the other outlet portion 16B of the circuit breaker 16
The cable head 1 is connected to the cable head 1 via the line disconnector 17.
8 are connected. In this way, the upright type circuit breaker 16 can also be configured in the same manner as the embodiment of the present invention, and similarly to the embodiment of the present invention, the disconnector 12A,
Either one or both of 12B can be attached and detached.

〔Effect of the invention〕

As explained above, according to the present invention, an outlet is provided in a direction perpendicular to the longitudinal direction of the circuit breaker main body, a linear conduit conductor is connected to the outlet on the bus bar side, and the line conductor is orthogonal to the outlet part on the busbar side. Two busbars are provided on both sides of the conduit conductor so as to sandwich the conduit conductor, and these busbars are installed parallel and parallel to each other, and an outlet is provided on this busbar in the same direction as the conduit conductor, and these busbars are installed parallel to each other. One end of the vertical side of the L-shape of an L-shaped disconnector is connected to each section, and one end of the horizontal side of the L-shape is arranged to face each other, and a T-shaped sectional connection device is used to disconnect the disconnection. By connecting the disconnector and the conduit conductor, one or both of the busbar disconnectors can be easily attached and detached without moving other equipment, and the disconnector can be easily inspected without creating extra space. It can be carried out.

Further, when inspecting one disconnector, the other disconnector can be used to energize, which improves the degree of freedom in operating the switchgear. Further, it is possible to provide a closed type switchgear which has the advantage that standardization can be achieved because the same type of disconnectors can be used.

[Brief explanation of the drawing]

1 to 4 show the closed type switching device of the present invention, FIG. 1 is a side view, FIG. 2 is a longitudinal sectional view of the divisional connecting device of FIG. 1, and FIGS. 3 and 4 are Second
5 is a side view showing another embodiment of the present invention, and FIG. 6 is a side view of a conventional closed type switchgear. . 11A, 11B... Bus bar, 12A, 12B...
L-shaped connection type disconnector, 13A, 13B...Exit part, 14A, 14B...Insulating spacer, 15A,
15B... Conductor, 16... Circuit breaker, 16A... Bus bar side outlet, 21... Conduit conductor, 22... Insulating spacer, 23... Conductor, 24... Connection conductor,
101... Connection device for division, 102... Casing, 104A, 104B... Bellows, 105...
Hand hole, 105A, 105B...Cover,
202A, 202B, 205...first, second, third connection conductor, 208...screw.

Claims (1)

[Claims] 1 Connect one end of a straight conduit conductor to the outlet on the bus bar side provided perpendicularly to the longitudinal direction of the circuit breaker body, and sandwich this conduit conductor on both sides of the conduit conductor. First and second busbars are arranged horizontally and parallel to each other, orthogonal to the conduit conductor, and the opening portions of the first and second busbars are oriented in the same direction as the conduit conductor. and connect one end of an L-shaped connection type disconnector to each of the openings of the first and second busbars,
The other ends of each disconnector are opposed to each other, and each end of the opposed disconnector is connected to a T-shaped section connecting device.
A closed type switchgear characterized in that the remaining end of the T-shaped segmental connecting device is connected to the other end of the conduit conductor.