JPH035076Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention A-1. Industrial application field This invention relates to the improvement of butching cutouts for the purpose of beautifying the pole installation of high-voltage distribution lines and improving workability. This relates to a butching cutout that is installed vertically on the top surface (lid) of a container case.

A-2 Prior Art In recent years, various measures have been taken to beautify the poles of high-voltage distribution lines in urbanized areas in order to harmonize with the surrounding environment.

In particular, for pole-mounted transformers, in order to simplify the surroundings of the transformer, as shown in Figure 6, instead of the high-voltage side bushing that is installed at the top of the side of the case, a cutout is installed in that part. A bushing cutout 100 that is integrated with (also serves as) a bushing is attached.

However, this butsing cutout 1
As shown in FIG. 6, 00 has a structure similar to a cylindrical cutout in most cases, and its upper half 101 is inserted into the transformer case 102, and its lower half 103 is inserted into the case 10.
2, and the cutout 100 was attached to the case 102 in an inclined state.

E-3 Problems to be solved by the present invention However, according to the bushing cutout described above, when a bushing cutout is attached to the transformer case, the lower half of the cutout is larger than the side of the case. Because of the protrusion, the transformer looked thick and took up space, and aesthetics remained a problem.

In addition, the above-mentioned butching cutout 100 is used to open and close the electrical circuit by attaching and detaching the fuse tube 104 installed in the cutout using an insulated operating rod, but in this case, as described above, the cutout 100 is tilted diagonally. When installed, the opening/closing direction of the fuse tube was slanted, making it difficult for workers located on the pole side to operate the fuse.

Furthermore, not only the bushing cutout described above but also this type of high pressure cutout has the problem that it is difficult to implement the uninterruptible construction method.

In other words, this uninterruptible construction method involves opening the high-voltage cutout connected to the high-voltage side of the pole-mounted transformer for customers located within the power outage area (construction zone), and then connecting the transformer to the high-voltage distribution line in the power outage area. Once disconnected from the power lines, the lower lead of the above cutout can be connected to another power distribution line or to a power supply vehicle (a car equipped with a private generator) to keep the above transformer in operation during construction. However, in this case, since the conventional cutout does not have a special bypass terminal that makes a branch connection with the lower lead part of the cutout, the connection with the lower lead part is difficult. After peeling off or cutting a part of the insulation coating, it is necessary to make a branch connection using a connector. Therefore, the connection and repair after the construction was completed was extremely troublesome.

This proposal is intended to solve the aesthetic problems, workability, and uninterruptible construction method problems that arise when installing these bushing cutouts.

B. Structure of the invention B-1 Means for solving the problem In order to solve the above-mentioned problems, the present invention provides a cut-out body 2 which has an upper fixed electrode 9 and a lower fixed electrode 18 inside the body and is open on one side. , a lid body 4 equipped with a fuse tube 36 is provided in the side opening of the cutout main body 2 so that the lid body 4 can be opened and closed using its lower end as a fulcrum, and when the lid body 4 is opened and closed, the fuse tube 36 provided in the lid body is opened and closed. Upper and lower movable electrodes 37, 3
8 is separated from the upper and lower fixed electrodes 9 and 18,
The upper lead portion 13 connected to the upper fixed electrode 9 is made to protrude perpendicularly from the upper surface 2b of the cutout body 2, and the lower surface of the cutout body 2 is provided with a bushing portion 2 integral with the body 2.
4 is formed in a hanging manner, and is connected to the lower fixed electrode 18 within the bushing portion 24.
Further, a bypass terminal 21 connected to the lower lead part 22 is provided in the cutout body 2, and another power distribution line for connecting to the bypass terminal 21 is inserted into the side wall of the cutout body 2. An insertion hole 2e is formed in the cut-out main body 2, and the bushing portion 24 of the cut-out main body 2 is vertically penetrated into the upper surface 28a of the case of the transformer 27, and the flange portion 24a of the bushing is fixed to the upper surface of the case, and the main body The mounting bolt 34 fixed on the back 2f of the main body 2 is attached to the angle 35 fixed upright on the top of the case or the reinforcing metal fitting 35' for connecting adjacent cut-outs, so that the main body 2 can be attached to the transformer with two mounting structures, upper and lower. It is characterized by being installed upright on the top of the case.

RO-2 Effect The bushing cutout 1 of the present invention has a bushing portion 24 formed to protrude in the downward axial direction of the main body 2 as shown in the figure, and the bushing portion 24 is cut out so that the cutout is perpendicular to the upper surface 28a of the transformer case 28. It can be installed by penetrating it so that it looks like this.
In this case, the electric circuit opening/closing cover body 4, which is equipped with a fuse cylinder 36 pivotably attached to the main body 2 so as to be openable and closable, is attached toward the utility pole 12 side in order to facilitate opening/closing operations from the utility pole 12 side. . Further, the upper surface 2b of the attached cutout main body 2 has an upper lead portion 13 connected to the upper fixed electrode 9, and a tip 13a of the upper lead portion projecting upward is connected to a high voltage distribution line.

Further, the lower lead portion 22 connected to the lower fixed electrode 18 passes through the bushing portion 24 to the transformer 27.
It is connected to the high voltage side terminal of the Furthermore, the connection to the bypass terminal 21 which is branched and connected to the lower lead part 22 used when implementing the uninterruptible construction method etc. is performed through the wire insertion hole 2e provided on both sides of the lower side surface 2d of the main body. be exposed.

RO-3 Embodiment Next, a first embodiment of the present invention shown in FIGS. 1 to 4 will be described.

Reference numeral 1 denotes a bushing cutout, which is composed of a porcelain main body 2 and a porcelain lid 4 pivotably attached to the main body 2 by a shaft pin 3 so as to be openable and closable.
Reference numeral 5 denotes an upper arc extinguishing device provided in an upper recess 2a in the main body 2, and is fixed to the main body 2 by its fixed legs 6 and adhesive 7. The upper arc extinguishing device has a slit arc extinguishing chamber 8.
The conductive plate 10, which is composed of the upper fixed electrode 9 and the conductive plate 10 and is connected to the upper fixed electrode 9, is connected to the upper lead part 13 by screws 11. The upper lead part 13, which is adhesively fixed to the upper surface 2b of the main body 2, is composed of a so-called stress cone-shaped lead wire, and the electric wire 1 at the tip thereof is formed to protrude upward.
3a is connected to a high voltage distribution line directly or via a high voltage underline. 14 is a lower recess 2c in the main body 2
The lower arc extinguishing chamber is provided in the lower arc extinguishing chamber, and is fixed to the main body 2 by its fixed legs 15 and adhesive 16. The lower arc extinguishing device consists of a narrow arc extinguishing chamber 17, a lower fixed electrode 18, and a conductive plate 19, one end of the conductive plate 19 is connected to the lower fixed electrode 18, and the other end is provided with a tightening screw 20. It is connected to the bypass terminal 21. In addition, connection to the bypass terminal 21 when implementing an uninterruptible construction method etc. is made through the wire insertion holes 2e formed below both sides 2d of the main body 2, and these holes are normally closed with rubber plugs. etc. have been installed and are blocked. Reference numeral 22 denotes a lower lead part whose one end 22a is connected to the lower fixed electrode 18 with a screw 23, and the other end is a bushing part 24 which is located below the main body 2 and integrally formed to protrude.
It is inserted through the insertion hole 25 of and further connected to the high voltage side terminal (winding) of the transformer 27 through the hole. 2
A rubber bushing 6 is inserted into the insertion opening 25a of the insertion hole 25, and together with the filler 25b injected into the gap of the insertion hole 25, prevents rainwater from entering the hole. Note that the cutout 1 is installed in an upright state on the upper surface 28a of the case 28 of the transformer 27, but in this installation, the cylindrical bushing portion 24, which is formed to protrude in the axial direction below the main body 2, is attached to the case 28 of the transformer 27. Mounting hole 28b on top surface 28a of 28
After passing through the flange portion 24a, the presser metal fitting 29 is tightened with bolts 32 and nuts 33 via the packings 30 and 31, thereby airtightly fixing it to the case 28. Incidentally, if necessary, the mounting bolt 34 fixed on the back surface 2f of the main body 2 is attached to the angle 35 erected and fixed on the upper surface 28a of the case with a nut or the like.
The attachment of the cutout is further reinforced.

Reference numeral 36 denotes a full-area type high-pressure current-limiting fuse tube removably attached to the inner side 4a of the lid body 4, and blade-shaped upper and lower movable electrodes 37 protruding from the fuse tube 36. 38 are inserted into or removed from the upper and lower fixed electrodes 9 and 18 in the main body 2 when the lid body 4 is opened and closed, respectively, to open and close the electric circuit. The lid body 4 is designed to open approximately 90 degrees around the shaft pin 3 by engaging an operating rod in the hook portion 4a and pulling it clockwise. Reference numeral 39 indicates a detachable fitting for detachably holding the fuse cylinder 36 on the lid body 4, and 40 indicates a rubber gasket.

FIG. 5 shows a second embodiment of the present invention, in which the structure of the upper lead portion is slightly different from that of the previous embodiment. That is, the upper surface 2 of the main body 2
A cylindrical upper lead attachment portion 2g is integrally formed to protrude in the vertical direction on b.
Insert the stressed cocone-shaped upper lead part 13 from the outside into the mounting hole 2h of the g, and insert the inserted tip part 13b into the conductive plate 10 inside the main body with the screw 11.
The upper lead portion 13 is designed to be connected to the upper fixed electrode 9 by connecting it to the upper fixed electrode 9, and the upper lead portion 13 has a structure that allows it to be relatively easily attached and detached at the site as described above.

The upper lead part 13 is fastened to the tip 2g' of the upper lead attachment part 2g by a tightening band 42 by means of a waterproof cover 41 made of an insulating material attached to the outer periphery of the upper lead part 13. The other structure is the same as that of the first embodiment, and the cutout is installed by attaching the bushing part 24 to its flange part 24a with a holding fitting 29, and by attaching a bolt 34 fixed to the back surface 2f of the main body 2. It is screwed to a reinforcing metal fitting 35' for connecting adjacent cutouts.

C. Effect of the invention As described above, according to the invention, since the cutout is provided upright on the top surface of the transformer case,
Unlike conventional bushing cutouts, the cutouts do not protrude beyond the side of the case when installed, allowing for a smart installation.In addition, both the upper and lower leads are arranged in the upper and lower axial direction of the main body. Since these lead portions are also simplified, the appearance is not spoiled due to the lead wires becoming congested as in the conventional case. Therefore, it can contribute to measures to improve the appearance of pillars. At the same time, when attaching the bushing cutout to the top of the case, the cover side of the bushing cutout can be attached facing the utility pole, that is, the side where the worker is located, so the worker can open and close the cutout from the utility pole 12 side. Opening/closing and replacing fuse tubes etc. are easier than with conventional ones. In addition, when implementing the uninterruptible construction method, branch connection work to the lower lead part of the cutout is required, but even in such a case, the cutout of the present invention is equipped with a bypass terminal that is branched and connected from the lower lead part. This makes this connection work easier. In addition, in the present invention, almost the entire cutout is the case 2 of the transformer 27.
However, even in such a case, the flange part 24a of the bushing part 24 of the cutout is attached to the upper surface 28a of the bushing part 24, and is in an unstable state. In addition to being attached to the case 28, a bolt 34 fixed to the back surface 2f of the main body 2 is attached to an angle 35 fixed to the case 28 or a reinforcing metal fitting 35' for connecting adjacent cutouts at two locations, upper and lower. Due to the mounting structure, the cut-out has sufficient mounting strength, and even if the operator handles the opening/closing operation of the lid body 4 roughly, the cut-out will not rattle or be damaged at the bushing part. It has its features.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view of a butching cutout showing the first embodiment of the present invention, Fig. 2 is an external view of the butting cutout, and Figs. 3 and 4 are mounting pillars of the butting cutout. A front view and a plan view showing the state, FIG. 5 is a sectional view of the main part of the butting cutout showing the second embodiment of the present invention, and FIG. 6 is a diagram showing the installed state of the butting cutout showing the conventional example. . 1...Butching cutout, 2...Main body,
2b...Top surface, 2e...Wire insertion hole, 4...Lid, 9...Upper fixed electrode, 13...Upper lead part, 18...Lower fixed electrode, 21...Bypass terminal, 22...Lower Lead part, 24... Bushing part, 25... Insertion hole, 27... Transformer, 36...
... Fuse tube, 37 ... Upper movable electrode, 38 ...
Lower movable electrode.

Claims (1)

[Scope of utility model registration request] A cut-out body 2 having an upper fixed electrode 9 and a lower fixed electrode 18 inside the body and having one side open.
A lid body 4 equipped with a fuse tube 36 is provided in the side opening of the cutout main body 2 so that the lid body 4 can be opened and closed using its lower end as a fulcrum, and when the lid body 4 is opened and closed, the fuse provided in the lid body 4 can be opened and closed. The upper and lower movable electrodes 37 and 38 of the tube 36 are brought into contact with, separated from, and connected to the upper and lower fixed electrodes 9 and 18, and the upper lead portion 13 connected to the upper fixed electrode 9 is inserted from the upper surface 2b of the cutout body 2. A bushing part 24 that is vertically protruded and is integral with the main body 2 is formed in a hanging manner on the lower surface of the cutout main body 2, and a lower lead 22 connected to the lower fixed electrode 18 is inserted into the bushing part 24. Furthermore, a bypass terminal section 21 connected to the lower lead section 22 is provided inside the cutout body 2, and another power distribution line is inserted through the side wall of the cutout body 2 to connect to the bypass terminal section 21. An insertion hole 2e is formed, and the bushing portion 24 of the cut-out main body 2 is vertically penetrated into the upper surface 28a of the case of the transformer 27, and the flange portion 24a of the bushing portion is fixed to the upper surface of the case. The mounting bolt 34 fixed on the back 2f of the main body 2 is attached to the angle 35 fixed upright on the top of the case or the reinforcing metal fitting 35' for connecting adjacent cut-outs, so that the main body 2 can be attached to the transformer with two mounting structures, upper and lower. A butsing cutout that stands up on the top of the case.