JP2001136615A - Gas insulated detachable bus device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas insulated detachable bus device which can be easily detached from a bus by work in a short time. SOLUTION: In a gas insulated detachable bus device, inner conductor 33a is installed detachably in an expandable vessel 7 in which insulation gas is enclosed. The inner conductor is formed to be expandable in the same direction as the expanding direction of the vessel, which is equipped with a stud 11 for allowing expansion and contraction of the conductor in a specified range.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas insulated detachable bus device provided in a gas insulated switchgear used in a substation facility or a power receiving facility, and more particularly to a gas insulated detachable bus device having an improved internal conductor configuration. About.

[0002]

2. Description of the Related Art A gas insulated switchgear is one in which a switchgear is housed in a metal tank installed and filled with an insulating gas having excellent insulating properties such as SF6 gas. It has the advantage that the required space can be reduced, and is widely used in electric stations such as power plants and substations.

[0003] This gas insulated switchgear is designed to remove main equipment such as a circuit breaker, disconnector, ground switch, etc. in the event of an accident.
Alternatively, a gas insulated detachable bus device is connected for line transfer or line expansion. A gas insulated detachable bus device is provided with an inner conductor in a stretchable metal container such as a bellows,
This is a bus device that separates, for example, a faulty circuit from a main circuit by shrinking a metal container and removing a detachable conductor that is a part of an internal conductor.

A conventional gas-insulated detachable bus device is described in, for example, Japanese Utility Model Laid-Open Publication No. Sho 59-169530, and has a configuration as shown in FIG. That is, the bus 1 and the bus 2 are provided with insulating spacers 3 and 4 in cylindrical containers 1a and 2a filled with insulating gas.
And three-phase conductors 5 are inserted through the insulating spacers 3 and 4. A gas-insulated detachable bus device 6 is provided between the bus 1 and the bus 2.

[0005] The gas-insulated detachable bus device 6 comprises a bellows 7 which is mounted between the insulating spacers 3 and 4 so as to be extendable and contractible.
Three-phase connecting conductors 8 and 9 slidably connected to conductors provided on the insulating spacers 3 and 4, respectively;
And a detachable conductor 10 connected between them. Bellows 7
Are provided with flanges 7a and 7b at the ends thereof.
b is threaded into the flange 7a,
While being fixed by the nut 12, nuts 13 and 14 are mounted on both sides of the stud 11 penetrating the flange 7b, and the flange 7b is fixed.

FIG. 11 shows a process of removing the conventional gas-insulated detachable bus device 6 configured as described above. That is, by loosening the nut 13 attached to the stud 11 penetrating the flange 7b of the bellows 7 and screwing the other nut 14, the stud 11 moves to the left in the drawing, and the bellows 7 into which the stud 11 is screwed is attached. The other end flange 7a moves to the left in the drawing together with the stud 11, and an opening 15 is formed.
The detachable conductor 10 is removed by inserting a tool through the opening 15 and loosening the bolt of the detachable conductor 10. Thereafter, the connection conductors 8 and 9 are detached from the insulating spacers 3 and 4, and the bellows 7 are detached from the buses 1 and 2.

[0007]

In the conventional gas-insulated detachable bus device as described above, the structure of the inner conductor is complicated, and the work of removing and attaching the detachable conductor 10 takes time. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a gas insulated detachable bus device that can be removed from or attached to a bus in a short time.

[0009]

In order to achieve the above object, the present invention is directed to a gas-insulated detachable bus device in which an inner conductor is detachably provided in a telescopic container for enclosing an insulating gas. The internal conductor is formed so as to be able to expand and contract in the same direction as the direction in which the container expands and contracts.

According to a second aspect of the present invention, in the gas-insulated detachable bus device of the first aspect, the inner conductor has a long hole at an end and is connected to each other by bolts inserted through the long hole. The structure is made of a conductor.

According to a third aspect of the present invention, in the gas insulated detachable bus device of the first aspect, the inner conductor is formed of a corrugated conductor. According to a fourth aspect of the present invention, in the gas insulated detachable bus device of the first aspect, the inner conductor is a corrugated conductor, a contact attached to an end of the corrugated conductor, and slidably connected to the contact. And a receiving conductor.

The invention described in claim 5 is the invention according to claim 3 or 4.
In the gas-insulated detachable bus device of (1), the container is provided with a stud that allows expansion and contraction within a predetermined range. According to a sixth aspect of the present invention, in the gas insulated detachable bus device of the third or fourth aspect, the container is provided with a stud that allows displacement in a direction perpendicular to the direction of expansion and contraction.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a gas-insulated detachable bus device of the present invention will be described below with reference to the drawings. In addition,
The same members as those in the prior art shown in FIGS. 10 and 11 are denoted by the same reference numerals, and the description of the same components will be omitted.

First, a gas-insulated detachable bus device according to a first embodiment of the present invention will be described with reference to FIGS. FIG.
1A is a side sectional view, and FIG. 1B is bb in FIG.
It is sectional drawing which follows a line.

As shown in FIG. 1, the internal conductor of the gas-insulated detachable bus device 30 of the present embodiment is constituted by plate conductors 33a and 33b. Opposite ends of the plate conductors 33a and 33b are connected by bolts 34 to conductors 31a and 31b insulated and supported by insulating spacers 3 and 4, respectively. In addition, the plate conductors 33a, 33
b overlaps at the center and is connected by bolts 32. The hole of the bolt fastening portion provided on the joint surface between the plate conductor 33a and the plate conductor 33b is a hole that is long in the longitudinal direction.

The attachment and detachment of the gas-insulated detachable bus device according to the present embodiment having the above-described configuration is performed as follows. That is, as shown in FIG.
To make an opening 15, and remove the bolt 32 connecting the plate conductor 33a and the plate conductor 33b. Thereafter, by removing the bolts 34 fixing the plate conductor 33a and the plate conductor 33b to the conductors 31a and 31b, the bellows 7 is connected to the bus 1 and the bus 2
Can be removed from.

When the dimensions of the gas-insulated detachable bus device 30 are adjusted, even if the total length of the gas-insulated detachable bus device 30 changes, a long hole provided in the joint surface between the plate conductor 33a and the plate conductor 33b changes. Since the holes allow the change to be absorbed, the installation dimensions can be easily adjusted.

As described above, in the gas-insulated detachable bus device according to the embodiment of the present invention, the detachment work can be performed by removing the bolts connecting the plate conductors. Can be reduced. There is also an advantage that the detachable conductor itself becomes unnecessary. In addition, the installation adjustment fee for the gas-insulated
It can be absorbed by the long hole of the bolt hole provided at the connection portion of the plate conductor.

Next, a second embodiment of the present invention will be described with reference to FIG. The description of the same parts as in the first embodiment is omitted. The feature of the configuration of the second embodiment is that a plurality of plate conductors having the same structure are arranged. That is, as shown in FIG.
a, 33b are opposed to each other, and plate conductors 33a, 33
This is a configuration in which the connection portion b and the connection portions of the plate conductors 33a and 33b arranged below are connected together by bolts 35.

According to the second embodiment, the same effects as those of the first embodiment can be obtained, and by arranging a plurality of plate conductors, it is possible to increase the value of the current supplied to the main circuit. Therefore, the capacity can be easily increased without increasing the size of the device.

Next, a third embodiment of the present invention will be described with reference to FIG. The description of the same parts as those in the first and second embodiments will be omitted. The feature of the configuration of the third embodiment is that the plate conductor provided also in the gas-insulated detachable bus device of the first and second embodiments is formed in a waveform, and the dimension can be adjusted by expansion and contraction of the waveform. It is in the point which did. That is, as shown in FIG. 4, it is composed of a plate conductor 33a and a wave-shaped plate conductor 33c.

In the third embodiment, the same effects as those of the first and second embodiments can be obtained. In addition, since the plate conductor 33c is formed in a waveform, the size can be adjusted by expanding and contracting the waveform. Therefore, the working time can be further reduced as compared with the first and second embodiments.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. The description of the same parts as those in the third embodiment will be omitted. The feature of the configuration of the fourth embodiment is that, in the gas insulated detachable bus device of the third embodiment, a contact is attached to one end of a plate conductor,
The point is that the dimensions can be adjusted by slidably connecting to the receiving conductor on the other side. That is, as shown in FIG. 5, a corrugated plate conductor 33b having a contact 36 attached to one end and an insulating spacer 4 are provided.
And a receiving conductor 37 fixed to a conductor 31b that is insulated and supported by the contact member 36. The contact 36 and the receiving conductor 37 are slidably connected to each other.

When disconnecting the gas-insulated detachable bus device of the fourth embodiment having such a configuration from the bus, the contact 36 and the receiving conductor 37 are separated by contracting the corrugated plate conductor 33d. When the stroke is long, as shown in FIG. 6, the bolt fastening between the corrugated plate conductor 33d and the contact 36 is cut off, and only the corrugated plate conductor 33d is contracted.

Next, a fifth embodiment of the present invention will be described with reference to FIG. The description of the same parts as in the third and fourth embodiments will be omitted. The structural feature of the fifth embodiment is that in the gas-insulated detachable bus device of the third and fourth embodiments, contacts are attached to both ends of the corrugated plate conductor, and the receiving conductor 37 and the receiving conductor 37 on the other side are attached. The point is that the dimensions can be adjusted by slidably connecting. That is, as shown in FIG. 7, a corrugated plate conductor 33e provided with contacts 36 at both ends and a receiving conductor 37 fixed to the conductors 31a and 31b insulated and supported by the insulating spacers 3 and 4 are provided. And the receiving conductor 37 are slidably connected.

In the gas-insulated detachable bus device according to the fifth embodiment having the above-described structure, the contacts 36 attached to both ends of the corrugated plate conductor 33e and the receiving conductor 37 on the other side are formed by the plate conductor.
The installation dimensions can be adjusted by slidably connecting by the expansion and contraction of 33e. The attachment / detachment work is the same as in the fourth embodiment.

Next, a sixth embodiment of the present invention will be described with reference to FIG. The description of the same parts as in the third embodiment is omitted. The configuration of the sixth embodiment is characterized in that a bus bar device for thermal expansion and contraction that absorbs displacement by thermal expansion and contraction is formed of a plate conductor having the same waveform as that of the third embodiment. The point is that the displacement due to expansion and contraction can be absorbed. That is, as shown in FIG. 8, a plate conductor 33a and a corrugated plate conductor 33c are provided inside the thermal expansion / contraction bus device 40. A gap 42 is provided between the nut 41 screwed to the stud 11 and the flange 7b, so that the bellows 7 can freely expand and contract in the left-right direction.

In the sixth embodiment having such a structure, the same effects as those of the third embodiment can be obtained, and the displacement caused by thermal expansion and contraction can be absorbed. The attaching / detaching operation is the same as in the first to third embodiments.

Next, a seventh embodiment of the present invention will be described with reference to FIG. The description of the same parts as in the third and sixth embodiments will be omitted. The feature of the configuration of the seventh embodiment is that the bus device for large displacement which receives displacement in the vertical direction such as the divided part of the building is constituted by a plate conductor having the same waveform as that of the third and sixth embodiments. Another advantage is that the concentration of stress generated in the plate-shaped conductor due to the deformation of the bent portion of the waveform is avoided, and the vertical displacement can be absorbed. That is, as shown in FIG.
Are provided with a plate-shaped conductor 33a and a wave-shaped plate conductor 33c. Also, a stud 44 penetrating through the flanges 7a and 7b.
A spherical washer 47 is provided on the top.

The seventh embodiment having such a structure can obtain the same effects as those of the third embodiment, and can absorb vertical displacement. The attaching / detaching operation is the same as in the first to third embodiments.

[0031]

According to the present invention, there is provided a gas-insulated detachable bus device in which an inner conductor is detachably provided in an extensible container for enclosing an insulating gas, wherein the inner conductor extends and contracts in the same direction as the container. Because it was configured to be formed in
When attaching and detaching the gas insulated detachable bus device, the internal conductor can be contracted to perform the operation. In addition, since dimensional adjustment and the like can be easily performed, work can be facilitated and time can be reduced.

[Brief description of the drawings]

FIG. 1 shows a gas-insulated detachable bus device according to a first embodiment of the present invention, wherein (a) is a side sectional view and (b) is (b) of (a).
Sectional drawing which follows the -b line.

FIG. 2 is a side sectional view of the gas-insulated detachable bus device according to the first embodiment of the present invention at the time of attachment and detachment.

FIG. 3 is a diagram showing a side cross section of a gas-insulated detachable bus device according to a second embodiment of the present invention.

FIG. 4 is a diagram showing a side cross section of a gas-insulated detachable bus device according to a third embodiment of the present invention.

FIG. 5 is a diagram showing a side cross section of a gas-insulated detachable bus device according to a fourth embodiment of the present invention.

FIG. 6 is a side cross-sectional view of a gas-insulated detachable bus device according to a fourth embodiment of the present invention at the time of attachment and detachment.

FIG. 7 is a diagram showing a side cross section of a gas-insulated detachable bus device according to a fifth embodiment of the present invention.

FIG. 8 is a diagram showing a side cross section of a gas-insulated detachable bus device according to a sixth embodiment of the present invention.

FIG. 9 is a diagram showing a cross-sectional side view of a gas-insulated detachable bus device according to a seventh embodiment of the present invention.

FIG. 10 is a side sectional view of a conventional gas-insulated detachable bus device.

FIG. 11 is a side cross-sectional view of a conventional gas-insulated detachable bus device at the time of attachment and detachment.

[Explanation of symbols]

1, 2, bus bar, 1a, 2a container, 3, 4 insulating spacer, 5 conductor, 6, 30 gas insulated detachable bus device, 7 bellows, 7a, 7b flange, 8, 9 connection conductor, Ten
… Removable conductors, 11, 44… Studs, 12, 13, 14, 45, 46…
Nut, 15 ... opening, 31a, 31b ... conductor, 32, 34, 35,
38, 39: bolt, 33a to 33e: plate conductor, 36: contact, 37
... conductor, 40 ... thermal expansion and contraction busbar device, 41 ... double nut,
42 ... clearance, 43 ... busbar device for large displacement, 47 ... spherical washer.

 ──────────────────────────────────────────────────続 き Continued on front page F term (reference) 5G017 AA02 AA32 BB20 FF05 HH01 JJ01 5G365 DA14 DB04 DC05 DH04 DJ07 DJ08 DK02 DK03 DP01

Claims (6)

[Claims] 1. A gas-insulated detachable bus device in which an inner conductor is detachably provided in an expandable and contractable container for enclosing an insulating gas, wherein the inner conductor is formed to be expandable and contractible in the same direction as the container. A gas-insulated detachable bus device. 2. The gas insulated mounting / dismounting device according to claim 1, wherein the inner conductor comprises a plurality of plate conductors having an elongated hole at an end and connected to each other by bolts inserted through the elongated hole. Busbar device. 3. The gas-insulated detachable bus device according to claim 1, wherein the inner conductor comprises a corrugated conductor. 4. The internal conductor includes a corrugated conductor, a contact attached to an end of the corrugated conductor, and a receiving conductor slidably connected to the contact. Item 2. The gas-insulated detachable bus device according to Item 1. 5. The container according to claim 3, wherein the container is provided with a stud which allows expansion and contraction within a predetermined range.
A gas-insulated detachable bus device as described in the above. 6. The gas-insulated detachable bus device according to claim 3, wherein the container is provided with a stud that allows displacement in a direction perpendicular to the direction of expansion and contraction of the container.