JPH02833Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a mounting structure for a puffer type switch.

Conventionally, when fixing capacitor bushings on the power supply side and load side to the main body case of a power switch, the method used was to weld the mounting flanges provided on the capacitor bushings to the main body case. . However, with this method, the area from the mounting flange of the capacitor bushing to the tip of the capacitor core must be housed in the main body case, which has the disadvantage that the external dimensions of the main body case become extremely large, as shown by the chain line in Figure 1. It was hot.

The purpose of this invention is to eliminate the above drawbacks,
It is an object of the present invention to provide a puffer type switch whose main body case can be made smaller.

Hereinafter, an embodiment embodying this invention will be described with reference to the drawings. 1 shows the whole of the Patsufur type switch, 2 is the switch body case made of rectangular parallelepiped stainless steel, and 3 and 4 are the power supply side. and load-side capacitor bushings, which are arranged in three pairs on opposite sides of the main body case 2. Reference numeral 5 denotes a flange metal fitting interposed between the capacitor bushings 3, 4 and a mounting seat 6 to be described later, and a pipe portion 5a through which the capacitor core 3b is inserted and supported is formed in the center thereof. 6 is capacitor bushing 3,
4 to the main body case 2, and as shown in FIGS. 2 and 3, it is also made of stainless steel and is formed into a substantially cylindrical shape with a lid, and there is a hole in the center of the lid surface. A through hole 7 is bored through which the pipe portion 5a of the flange fitting 5 is inserted.
The mounting seat 6 is formed to have the same diameter as the outer diameter of the mounting flanges 3a, 4a of the capacitor bushings 3, 4. Further, four screw holes 8 are formed on the outer periphery of the through hole 7, and a conical slope 9 is formed on the outer periphery thereof. As shown in FIG. 1, three mounting seats 6 are welded to each side of the main body case 2 at their lower edges, and the capacitor bushings 3 and 4 are inserted into the through holes 7 of the mounting seats 6. The flange metal fittings 5 are fitted, and in this state, the mounting flanges 3a, 4a of the capacitor bushings 3, 4 are attached to the flange metal fittings 5, and the mounting flanges 3a, 4a and the mounting seats 6 are connected with 10 bolts, respectively.

11 is three pairs of power supply side and load side bushings 3,
4, there are three puffer cylinders disposed inside the main body case 2, which are formed into a cylindrical shape from an insulating material such as tempered glass or epoxy resin,
Its both ends are sealed by a fixing plate 12 and an end plate 13, respectively. A fixed electrode 14, whose base end is screwed into a center conductor (not shown) inside the capacitor core 3b at the tip of the power supply side capacitor bushing 3, is fixed through the center of the fixed plate 12.

Reference numeral 15 denotes a movable electrode which is provided so as to be able to reciprocate within the cylinder 11 and to be able to come into contact with and separate from the fixed electrode 14 by operating a control lever 16 provided outside the main body case 2; A piston 17 is attached to the. A gas outlet (not shown) through which the fixed electrode 14 can be inserted is formed at the tip of the piston 17.
When the movable electrode 15 is separated from the movable electrode 15, the gas is blown from the gas outlet toward the fixed electrode 14 to blow out the arc generated between the two electrodes 14 and 15. Further, the base end of the movable electrode 15 is connected to the inner end of the conductor of the load-side capacitor bushing 4 through a conductive metal fitting and a flexible bus bar (both not shown).

18 is a check valve provided on the end plate 13, and as the piston 17 reciprocates, the cylinder 11
It is designed to communicate or block communication between the inside and outside.

The puffer cylinder 11, fixed plate 12, end plate 13, fixed electrode 14, movable electrode 15, piston 1
7 and the cylinder 18 constitute a puffer type opening/closing section. Reference numeral 19 denotes a mounting fitting provided on the outside of the main body case 2, which allows the puffer type switch 1 to be supported and fixed on a column.

Now, in the puffer type switch 1 configured as described above, the capacitor bushings 3 and 4 on the power supply side and the load side are attached to the main body case 2 via the mounting seat 6 and the flange fitting 5, and the bushings 3 and 4 Since a part of the area from the mounting flange to the tip on the capacitor core side is included in the mounting seat 6, the width of the main body case 2 in the bushing installation direction can be greatly reduced, and the patch-type opening/closing part can be placed inside the main body case 2. Since the body case 2 is housed in the body, the vertical width of the body case 2 is reduced, and since the bushings 3 and 4 are arranged in a straight line, the body case 2 can be visually reduced in size.

In addition, the capacitor core portions of the bushings 3 and 4 inserted into the through holes 7 of the mounting seat 6 are fitted with flange fittings 5.
Since it is supported by the tube portion 5a of the bushing 3,
4 can be stably and reliably fixed to the mounting seat 6. Such a structure is more advantageous in fixing the bushings 3 and 4 as the length of the bushings protruding from the main body case 2 increases.

Furthermore, since the flange fitting 5 is fixed to the mounting seat 6 with the common bolt 10 that fixes the mounting flanges 3a, 4a of the bushings 3, 4 to the mounting seat 6, a separate bolt for the flange fitting 5 is not required. , the number of parts can be reduced.

Therefore, this invention can reduce the weight of the main body case 2 of the patchwork switch 1 and make it smaller and lighter, thereby improving the efficiency of installation work. Because of this demand, it is of great significance that the switch main body case 2 to be mounted on the pole can be made smaller and lighter, and it also contributes to improving the aesthetic appearance when the switch 1 is mounted on a utility pole. be.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing an embodiment embodying this invention, FIG. 2 is a perspective view of the mounting seat, and FIG. 3 is a central vertical sectional view of the mounting seat. patchwork switch 1, main case 2, bushings 3, 4, mounting flanges 3a, 4a, mounting seat 6,
Through hole 7, bolt 10.

Claims (1)

[Scope of Claim for Utility Model Registration] In a pole-mounted patchwork switch, which has a patchwork opening/closing part for each phase parallel to the electric line inside and a mounting bracket 19 for mounting on the pole, Attachment flanges 3 for bushings 3 and 4 formed on the covered cylinder are attached to both sides of the main body case 2.
Mounting seats 6 having the same outer diameter as a and 4a are welded and fixed to both sides of the main body case 2 separately for each phase, and a through hole 7 is provided in the lid surface of the mounting seat 6. A bushing 3 is provided with a tube portion 5a to be inserted into the hole 7, a flange fitting 5 is disposed in contact with the lid surface of the mounting seat 6, and the bushing 3 is supported by the tube portion 5a with respect to the through hole 7. , 4 capacitor core parts are inserted and arranged,
Furthermore, the bushing type switch is characterized in that the mounting flanges 3a, 4a of the bushings 3, 4 and the flange fitting 5 are fixed to the end surface of the lid surface of the mounting seat 7 with a common bolt 10.