JPS591373Y2 - Support device for gas insulated busbars - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a support device for a long gas insulated bus bar.

Conventionally, as a device for supporting a long gas insulated bus bar, a device as shown in FIGS. 1 and 2 of the accompanying drawings has been used.

That is, in the figure, numeral 1 is the outer sheath which is the metal container of the insulated bus bar, 2 is the conductor that carries the current, and 3 is the outer sheath 1.
4 is a fixture for fixing the mounting leg 3 on the pedestal 5 of the gas-insulated busbar so that it can slide in the axial direction of the conductor 2; 6 is a support for the pedestal 5; It is.

The conventional device is configured as described above, and therefore, thermal expansion and contraction of the outer sheath 1 caused by changes in outside air temperature, temperature rise due to current flow, etc., can be avoided when the mounting legs 3 of the outer sheath 1 are placed on the pedestal 5. Since it is possible to slide in the axial direction of the object 1, it is absorbed by sliding in the axial direction.

Therefore, due to the sliding movement between the mounting leg 3 and the pedestal 5,
The sliding surface must always be rust-proofed and maintained in a slidable condition, and the sliding surface must be manufactured and maintained to a certain roughness or less for sliding, and it is also necessary to Conventional devices have the disadvantage that tightening during fixing requires force management and high-precision parts manufacturing, resulting in an expensive product.

The object of the present invention is to obtain a supporting device for a gas insulated bus bar that eliminates the drawbacks of the conventional device as described above. The gas insulated bus bar and the support bracket are connected perpendicularly to both ends of the support bracket, which is difficult to bend in the horizontal direction, but are easily bent in the horizontal direction, and the gas insulated bus bar is completely supported against the support in the vertical direction, and The present invention is characterized in that the relative displacement between the support column and the gas insulated bus bar in the axial direction of the gas insulated bus bar is absorbed by the deformation caused by the horizontal deflection of the support fitting.

Hereinafter, the present invention will be explained based on the accompanying drawings showing one embodiment thereof.

In FIGS. 3 and 4, reference numeral 11 denotes an outer jacket 1 which is a metal container having a conductor 2 therein and sealing a high-pressure insulating gas.
Reference numeral 2 denotes a support column, and one end of the support metal fitting 13 is fixed by bolts, welding, or other known means of attachment, and the support metal fitting 13 is designed so that bending deformation of the outer sheath 11 in the axial direction is caused even by a small force, and , the structure is such that bending deformation in the direction perpendicular to the axial direction, that is, in the direction perpendicular to the jacket in the horizontal plane and in the vertical direction, is not caused even by a considerably large force. It is made of a steel plate for springs, a non-ferrous plate for springs, etc. vertically, singly or in combination, and the outer sheath 11 of the gas insulated bus bar is attached to the other end by gripping or other known mechanical attachments. It is gripped and fixed.

Since the device of the present invention is constructed as described above, the bending stress in the axial direction of the sheath 11 of the support fitting 13 is much smaller than that of the support column 12, and therefore, the thermal expansion and contraction of the sheath 11 is As shown in FIG. 5, most of the deformation can be easily absorbed by deforming the outer sheath 11 of the support fitting 13 in the axial direction.

On the other hand, for the column 11 direction or the vertical direction,
Because the tensile, compressive, and bending strengths are large, the self-weight of the outer sheath 11 isogenerating line and the tension in the direction of the support column 11 are sufficient.
Compression effects can be countered.

As described above, according to the present invention, it is possible to absorb the thermal expansion and contraction of the outer cover etc. by the support fittings without using a sliding device, and as a result, it is possible to manage the roughness of the sliding surface and fastening force, and to increase There is no need to manufacture a large number of precision parts, or to take any measures to prevent rust on sliding surfaces, and the structure is extremely simple. Therefore, both manufacturing and maintenance costs are extremely low, making it economical. ing.

In the above embodiment, the entire busbar is supported by a support, but as shown in FIG.
Alternatively, the busbars may be arranged in multiple stages as shown in FIG.
Since the gas-insulated busbars are directly supported, there is no need for any supporting metal fittings between the gas-insulated busbars. Therefore, the spacing between the gas-insulated busbars can be shortened, and when busbars are arranged in multiple stages, it is possible to It also has the effect of greatly reducing the height.

Furthermore, in the above embodiment, the support metal fitting has a spring plate structure and is composed of two spring plates, but it is not limited to this, and may be made of one or a combination of multiple plates, and the material thereof may also be changed. In addition to steel, non-ferrous, or non-metallic materials having the desired spring performance, or a combination thereof, surface-treated materials may also be used; furthermore, as shown in FIG. 8, hollow spring plates, or , the same effect can be obtained by combining the spring bars without any problem.

[Brief explanation of drawings]

Fig. 1 is a schematic plan view of a conventional gas insulated bus bar supported by a support device, Fig. 2 is a sectional view taken along line III, and Fig. 3 is a gas insulated bus bar supported by an embodiment of the present invention. A schematic plan view of the state in which the
5 is a plan view showing its operating state;
FIG. 6 is a schematic plan view of another embodiment, FIG. 7 is a schematic side view of an embodiment in which gas insulated busbars are provided in multiple stages, and FIG. 8 is a schematic side view of an embodiment with another type of support fitting. It is a diagram. 1.11.22...Outer cover, 2,21...
・Conductor, 6, 12.31... Support, 13.32
...Supporting metal fittings.

Claims (2)

[Scope of utility model registration request] (1) In a support device for a long gas insulated bus bar, which has a conductor in its outer sheath, which is a metal container, and is filled with high-voltage insulating gas, it is difficult to bend the support column and the gas insulated bus bar in the vertical direction. In the horizontal direction, the gas insulated bus bar and the support bracket are connected perpendicularly to both ends of the support bracket, which can be easily bent, and in the vertical direction, the gas insulated bus bar is completely supported against the column, and the gas insulated bus bar is 1. A supporting device for a gas insulated bus bar, characterized in that the relative displacement between the support column and the gas insulated bus bar in the axial direction is absorbed by deformation due to horizontal deflection of the support fitting. (2) The support device for a gas insulated bus bar according to claim 1, wherein the support fitting is made of a spring plate material.