JPH062931U - Gas insulated busbar support device - Google Patents

Abstract

(57) [Abstract] [Purpose] A simple structure can contribute to downsizing and absorbs large displacement to ensure excellent safety. The gas-insulated bus bar support device of the present invention comprises a U-shaped support surface 1 having a curvature substantially the same as the outer peripheral surface of the gas-insulated bus bar 10 on an upper part of a support frame 12 for receiving the gas-insulated bus bar 10.
3a is attached to the support base 13, and slide bodies 14a and 14b that are slidable in the axial direction and the axis-perpendicular direction of the gas insulated busbar 10 are attached between the support base 13 and the support base 12.
An elastic body 16 that absorbs the displacement of the gas-insulated bus bar 10 in the direction perpendicular to the axis is installed on the support base 13 and the support base 12, and is slid in the axial direction of the gas-insulated bus bar 10 between the support base 13 and the elastic body 16. The movable second sliding bodies 14a and 14b are attached.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a gas-insulated busbar support device that supports a long gas-insulated busbar, and more particularly to a gas-insulated busbar support device that can absorb a large displacement.

[0002]

[Prior art]

 Generally, in order to support the gas-insulated bus bar, a gas-insulated bus bar support device including a support base, a support base, and a band is adopted. Here, a conventional example of the gas-insulated bus bar supporting device will be specifically described with reference to FIG. That is, a hollow support base 2 for receiving the gas-insulated bus bar 1 is attached to the upper part of the support base 3. A support surface 2a having a V-shaped cross section is formed at the center of the support base 2, and the outer peripheral portion of the gas-insulated busbar 1 is in contact therewith to support the gas-insulated busbar 1. A band 5 is wound around the gas-insulated busbar 1 supported by the support base 2. Both ends of the band 5 are fixed to both ends of the upper surface of the support base 2.

In the gas-insulated busbar support device having the above-described structure, the band 5 clamps the gas-insulated busbar 1 to the support surface 2a side, thereby firmly supporting the gas-insulated busbar 1 on the support base 2. , Can be fixed.

By the way, when an external force is applied to the gas-insulated bus bar supported by the device as described above due to an earthquake, or when the bus bar is expanded or contracted by heat, the gas-insulated bus bar extends in the axial direction of the bus bar. , It can be displaced in any direction such as the axis-perpendicular direction or the vertical direction. Therefore, gas-insulated busbars are usually equipped with large displacement bellows to absorb the amount of displacement.

However, in recent years, the gas-insulated bus bar tends to be elongated, and the displacement amount of the bus bar is increased in proportion to the increase in length. If the displacement of the gas-insulated busbar exceeds the allowable value of the large displacement bellows, the busbar and the large displacement bellows will be damaged. Therefore, for gas-insulated busbar support devices that support elongated gas-insulated busbars, it is possible to reliably absorb large displacements of the busbars so that the displacement of the busbars does not exceed the allowable value of the large displacement bellows. Is required.

[0006] Various proposals have been made to meet these demands. For example, as is known from Japanese Utility Model Laid-Open No. 58-193722, a gas-insulated busbar supporting device shown in FIG. 3 provided with a holding plate 4 is considered. The holding plate 4 is fixed to the upper surface of the support base 3, and the tip portion is inserted into the hollow inside of the support base 2. Further, as shown in FIG. 4, the holding plate 4 is arranged with a predetermined gap with the bottom surface portion 2a of the support base 2. Further, an elastic body 7 is provided at the tip of the pressing plate 4 so as to absorb the displacement of the gas insulating busbar 1.

According to such a gas-insulated bus bar support device, the elastic body 7 is gas-insulated within the gap between the bottom surface 2 a of the support base 2 provided under the gas-insulated bus bar 1 and the holding plate 4. The displacement of the busbar 1 can be absorbed.

[0008]

[Problems to be solved by the device]

 However, in the conventional gas-insulated busbar supporting device as described above, the gap size between the bottom surface 2a of the support base 2 and the holding plate 4 has the maximum value capable of absorbing the displacement, so that the displacement amount of the gas-insulated busbar 1 is reduced. In order to cope with the increase, it is necessary to increase the size of the gap between the bottom surface portion 2a and the pressing plate 4, which causes the support base 2 to become large. Further, the structure is complicated, such as the elastic body 7 provided inside the tip portion of the pressing plate 4.

Further, when a sudden force is applied in the direction perpendicular to the axis of the gas-insulated bus bar 1 (left-right direction in the figure) due to an earthquake or the like, it is extremely difficult for the elastic body 7 to suppress this force. Therefore, it was not possible to absorb the displacement of the large displacement bellows installed on the gas insulated busbar 1 in the direction perpendicular to the busbar axis.

As described above, the conventional gas-insulated busbar support device has a complicated structure and a large size, and has a large displacement in a direction perpendicular to the axis of the gas-insulated busbar due to a sudden motion such as an earthquake. The gas-insulated busbar and large displacement bellows could not be protected.

The present invention has been made to solve the above problems, and an object thereof is a gas that can contribute to downsizing with a simple structure and that absorbs a large displacement to ensure excellent safety. An insulating busbar support device is provided.

[0012]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention has a support base mounted on an upper part of a support base fixed to a base, and the support base has a substantially U-shaped support surface having substantially the same curvature as the outer peripheral surface of the gas-insulated bus bar. And the first slide body that is slidable in the axial direction and the axis-perpendicular direction of the gas-insulated busbar is attached between the support base and the support base. Is characterized in that an elastic body that absorbs the displacement to the above is installed, and a second sliding body that is slidable in the axial direction of the gas insulated busbar is attached between the support and the elastic body.

[0013]

[Action]

 In the present invention having the above-mentioned structure, when the gas-insulated bus bar is displaced, the first and second sliding bodies slide in the axial direction or the axis-perpendicular direction of the gas-insulated bus bar, so that the support base is gas-insulated. It can move with the busbar and absorb displacement of the busbar. Also, since the U-shaped support surface has almost the same curvature as the outer peripheral surface of the busbar, the contact area with the busbar is large and the band can strongly fix the busbar to the support base, so the gas-insulated busbar is displaced. At this time, the support can always move integrally with the gas-insulated bus bar. Therefore, the displacement of the gas-insulated busbar is not transmitted to the support frame fixed to the base portion, and the slide of the sliding body allows the support frame to reliably absorb the displacement of the busbar.

Further, the elastic body installed on the support can soften abrupt displacement of the gas-insulated bus bar in the direction perpendicular to the axis, and suppress the displacement amount. Therefore, even if a large displacement suddenly occurs in the gas-isolated busbar due to an earthquake, it is possible to suppress the movement of the large-displacement bellows installed on the busbar in the direction perpendicular to the axis within the allowable value of the large-displacement bellows. . Therefore, the gas-insulated busbar and the large displacement bellows are not overloaded, and both can be protected.

Further, in the present invention, since the sliding body and the elastic body are provided outside the supporting base and the supporting base, it is easy to simplify the structure. Moreover, even if the amount of displacement of the gas-insulated bus bar increases, it is not necessary to upsize the support base, and this can be accommodated.

[0016]

【Example】

 An embodiment of the gas-insulated bus bar supporting device according to the present invention will be described in detail below with reference to FIGS. 1 and 2. The present embodiment is an apparatus for supporting the gas-insulated bus bar 10, and a support frame 12 is fixed to a base portion 17. The support pedestal 12 has a support pedestal 12 having two vertical short legs and horizontal pedestals for mounting the legs at both ends. That is, the support base 12 has a low gate shape when viewed from the direction of the vertical cross section of the gas-insulated bus bar 10.

A support base 13 for receiving the gas-insulated bus bar 10 is attached to the center of the upper part of the support base 12. A U-shaped support surface 13a is formed in the center of the support base 13 when viewed from the direction of the vertical cross section of the gas insulated busbar 10. The supporting surface 13a is a substantially U-shaped curved surface having substantially the same curvature as the outer peripheral surface of the gas insulating busbar 10, and the outer peripheral surface of the gas insulating busbar 10 is in contact therewith to support the gas insulating busbar 10.

A band 11 is wound around the gas-insulated bus bar 10 supported by the support base 13. Both ends of the band 11 are fixed to both ends of the upper surface of the supporting base 13, and the gas insulating bus bar 10 is fastened to the supporting base 13 by the bands 11.

Further, first sliding bodies 14 a 1 and 14 b are attached to the surfaces of the support base 12 and the support base 13 in contact with each other. The first sliding bodies 14a and 14b are in contact with each other and are configured to slide in the axial direction and the axis-perpendicular direction of the gas insulating busbar 10.

Further, an elastic body 16 made of rubber, spring or the like is installed on the support base 13 and the support base 12. The elastic bodies 16 are provided on both ends of the support base 13 in the direction perpendicular to the axis of the gas-insulated bus bar 10, and as shown in FIG. 2, the displacement of the gas-insulated bus bar 10 in the direction perpendicular to the axis (horizontal direction in the figure). Is configured to absorb.

Further, second sliding bodies 15 a and 15 b are attached between the support base 13 and the elastic body 16. The second sliding body 15a is attached to both ends of the gas insulating busbar 10 of the support base 13 in the direction perpendicular to the axis, and the sliding body 15b is attached to the inner end portion of the elastic body 16. It is configured to slide in 10 axial directions.

In the present embodiment having the above-described configuration, when the gas insulated bus bar 10 is displaced by a sudden force applied from the outside due to an earthquake or the like, the first sliding bodies 14 a, 14 b are configured so that the shafts of the gas insulated bus bar 10 are not moved. The second sliding bodies 15a and 15b slide in the axial direction of the gas insulating busbar 10 by sliding in the direction and the axis-perpendicular direction. Therefore, the support base 13 can move together with the gas-insulated bus bar 10 and absorb the displacement of the bus bar 10.

Further, since the substantially U-shaped support surface 13 a has substantially the same curvature as the outer peripheral surface of the bus bar 10, it makes contact with the bus bar 10 over a wide area, and the band 11 strongly fixes the bus bar 10 to the support base 13. be able to. Therefore, when the gas-insulated bus bar 10 is displaced, the support base 13 can always move integrally with the gas-insulated bus bar 10. As a result, the displacement of the gas insulation busbar 10 is not transmitted to the support frame 12 fixed to the base portion 17, and the support platform 13 can reliably absorb the displacement of the busbar 10.

Further, the elastic body 16 installed on the support base 13 can soften abrupt displacement of the gas insulated busbar 10 in the direction perpendicular to the axis and suppress the displacement amount. Therefore, even if a large displacement is suddenly generated in the gas-insulated bus bar 10 due to an earthquake or the like, it is possible to suppress the movement of the large displacement bellows installed in the bus bar 10 in the direction perpendicular to the axis within the allowable value of the large displacement bellows. Is. Therefore, an excessive load is not applied to the gas-insulated bus bar 10 and the large displacement bellows, both can be protected, and high safety and reliability can be secured.

Further, in this embodiment, the sliding bodies 14 and 15 and the elastic body 16 are installed outside the support base 13 and the support base 12, so that the structure can be easily simplified. However, even if the amount of displacement of the gas-insulated bus bar 10 increases, it is possible to cope with this without increasing the size of the support base 13, thus contributing to downsizing of the device. It should be noted that the present invention is not limited to the above-mentioned embodiment, and the shape, size, etc. of each constituent member can be appropriately changed.

[0026]

[Effect of device]

 As described above, according to the gas-insulated bus bar supporting device of the present invention, since the sliding body and the elastic body are externally attached to the supporting base and the supporting frame, the simplification of the structure is improved, and the sliding body is further improved. The support can absorb the displacement of the busbar by the sliding and the elastic body can suppress the abrupt displacement of the gas insulation busbar in the direction perpendicular to the axis, so that the gas-insulated busbar and the large displacement bellows can be absorbed. It was possible to prevent damage to both and secure excellent safety.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a gas-insulated bus bar supporting device according to the present invention.

FIG. 2 is a sectional front view showing a main part of the present embodiment.

FIG. 3 is a front view of a conventional gas-insulated bus bar supporting device.

FIG. 4 is a sectional front view showing a part of a conventional gas-insulated switchgear.

[Explanation of symbols]

 10 Gas Insulated Busbar 11 Band 12 Supporting Stand 13 U-Shaped Supporting Stand 14a, 14b First Sliding Body 15a, 15b Second Sliding Body 16 Elastic Body 17 Foundation

Claims (1)

[Scope of utility model registration request] 1. A support frame fixed to a foundation, a support frame attached to the upper part of the support frame for receiving a gas-insulated busbar, and a gas-insulated busbar surrounding the gas-insulated busbar to fix the gas-insulated busbar to the support frame. In a gas-insulated busbar support device including a band, a substantially U-shaped support surface having substantially the same curvature as the outer peripheral surface of the gas-insulated busbar is formed on the support base, and between the support base and the support frame, A first sliding body that is slidable in the axial direction and the axis-perpendicular direction of the gas-insulated bus bar is attached, and an elastic body that absorbs displacement of the gas-insulated bus bar in the axis-perpendicular direction is attached to the support base and the support frame. A gas-insulated bus bar support device, which is erected and has a second sliding body attached between the support base and the elastic body, the second sliding body being slidable in the axial direction of the gas-insulated bus bar.