JPH01295608A - Transporting method for gas insulated switching unit - Google Patents

Abstract

PURPOSE:To facilitate transportation by connecting a main bus line conduit line or the like, to one side of a gas insulated switching unit interrupting tank, and by providing the lower section of a lead flange for fitting a bushing bearing originally on the other side, with a tacking lead flange. CONSTITUTION:One side (the right side of a figure) of an interrupting tank 1 for forming a gas insulating switchgear is provided with four lead flanges 2-5. In order from the upper section, the operating device 18 of a grounding disconnector, bus line conduit lines 8, 9, and the operating device 19 of a grounding device are connected. On the side opposite to the interrupting tank 1, a lead flange 20 for fitting a bushing bearing 22, and the tacking lead flange 21 of the same shape and dimension as those of the flange 20 are arranged under the flange 20. At the time of transportation, a blind cover 32 is fitted on the flange 20, and the bushing bearing 22 is tacked on the flange 21. In the field, the blind cover 32 is removed and the bushing bearing 22 is fitted, and on the lead flange 21, the blind cover 32 is fitted. As a result, packing is integrally performed, and a capacity is reduced, and the transportation is efficiently performed.

Description

DETAILED DESCRIPTION OF THE INVENTION A.m Mainland Field of Application The present invention relates to a method for transporting a gas-insulated switchgear unit whose bushing projects above a shut-off tank.

B0 Summary of the Invention The present invention connects a pipe line to one side of a cutoff tank, while
In a method of transporting a gas insulated switchgear unit that has a bushing holder connected to the upper part of the other side, the bushing holder is temporarily attached to the opening flange formed in advance at the lower part of the other side of the shutoff tank and then transported. It is designed to be able to be transported easily and in a stable state without significantly protruding above the cutoff tank.

C1 Conventional technology In compact substation equipment, a gas insulated switching unit using a bushing is used.

The structure of such a gas insulated switchgear unit (hereinafter simply referred to as the unit) is shown in FIG. As shown in the figure, a shutoff tank l is provided, and on the right side there are four outlet flanges 2 to 2.
5 is provided. The outlet flange 3.4 has a conduit 6.7 extending in a direction perpendicular to the plane of the paper and a conduit 8.7 extending in the left-right direction.
9. Main bus line 108 for three phases is in pipe 6.7! l is provided respectively, and a cut-off tank is installed through the new circuit device 12.13! introduced into the world. Main bus bar l in conduit 6
O is the main line, and the main bus bar 11 in the conduit 7 is an emergency auxiliary line. Inside the conduit 6.7, there are main busbars for each of the three phases, but only one phase is shown. A breaker 14 is installed in the breaker tank 1.
Current transformer! 5. A grounding device 16° and a new grounding device 17 are accommodated. The operating device g118 of the grounding/disconnecting switch 17 is attached to the outlet flange 2, and the operating device 19 of the grounding device 1B is attached to the outlet flange 5. 20.21 is the operating device of the new route device 12.13.

Shut off tank! An outlet flange 20° 21 is formed on the left side of the outlet flange 20, a bushing receiver 22 is attached to the outlet flange 20, and a blind cover 23 is attached to the outlet flange 2. The outlet flange 21 is provided for inspecting the arc extinguishing chamber of the breaker 14.

The bushing receiver 22 is composed of a main body 24, a branch box 25, and three bushings 26 (see FIG. 3(b)).
4 has a lightning arrester 27. Instrument transformer 28, grounding device W129
is provided. A cable (not shown) connected to the load passes through the bushing 26 and is connected to the circuit breaker 14 and the like.

A plurality of such units are arranged in a direction perpendicular to the plane of the paper, and the conduits 6, 7 are interconnected to form a gas-insulated switchgear.

To transport this unit from the factory to the site, proceed as follows. If the unit is placed on a truck in its original state as shown in FIG. 3(a), the position of the bushing 26 will be too high, making it unstable. Therefore, as shown in FIG. is removed and placed on the truck 30 via an iron or wooden support frame 30a. - On the other hand, the cutoff tank l is placed separately on a truck 30, and a protective blind cover 32 is attached to the outlet flange 20 of the cutoff tank l and the outlet flange 31 of the bushing receiver 1.
Install 33.

At the site, the outlet flange 20 and the outlet flange 3 are connected, and one blind cover 32 is attached to the outlet flange 21. The other blind lid 33 becomes unnecessary.

D1 Problem to be solved by the invention However, since the shutoff tank and the bushing receiver are separated and placed on the truck, they not only occupy a lot of space on the truck, but also require a support frame, and one blind cover is wasted. There is an issue of becoming.

Therefore, an object of the present invention is to provide a method for transporting a unit that solves this problem.

90 Means for Solving the Problems The structure of the present invention for achieving the above object includes a conduit for arranging a main bus bar connected to the breaker on one side of the breaker tank housing the breaker. In a method of transporting a gas insulated switchgear unit, the breaker tank is connected to a bushing holder which is used to connect the load to the breaker part and which protrudes upward for a long time. It is characterized in that the bushing receiver is temporarily attached to the outlet flange formed in advance on the lower part of the other side for transportation.

When the unit is completed at the F0 action factory, the bushing receiver is temporarily attached to the lower outlet flange of the cutoff tank instead of the original upper outlet flange, and a blind cover is placed on the original outlet flange.

This unit is then loaded onto a truck and transported to the site. At this time, the height of the bushing is approximately the same as the height of the breaker tank.

At the site, the bushing receiver is attached to the original outlet flange of the cutoff tank, the blind cover is attached to the lower outlet flange, and it is installed in a predetermined position.

G. Examples Hereinafter, the present invention will be explained in detail based on first and second examples shown in the drawings. Note that since this embodiment uses a conventional unit, the same parts will be described with the same reference numerals.

(,a) First example A first embodiment of the invention will be described below.

The unit includes an outlet flange 20 and an outlet flange 2.
In this embodiment, as shown in FIG. 1, the outlet flange 31 of the bushing receiver 22 is located below the upper outlet flange 20 to which it should be attached. Temporarily attach it to the outlet flange 21. And, the opening flange 20 is blind! I3
Attach 2.

In this state, it is loaded onto a truck 30 and transported to the site, and then the cutoff tank 1 and the bushing receiver 22 are separated, and the opening flange 3 of the bushing receiver 22 is removed. After connecting with the opening flange 20 on the upper part of the cutoff tank 1 which should originally be connected, the unit is installed. At this time, the blind M32 that was blocking the outlet 7 flange 20 is removed from the lower outlet flange 21.
There are no unnecessary parts left behind.

Since the height of the bushing 26 is approximately the same as the height of the cutoff tank 1, the unit can be transported in a stable state.

(b) Second Embodiment In addition, as shown in FIG. 2, an outlet flange 34 having the same shape and dimensions as the outlet flange 20 is separately provided at the bottom of the cutoff tank l, and this can also be used. good. The mounting surface of the outlet flange 34 is the front surface of the cutoff tank 1 in FIG. 3(a). - As shown in FIG. 2, by temporarily attaching the bushing receiver 22 to the lower outlet flange 34 instead of the upper outlet flange 20 shown in FIG. 1, the unit can be assembled in the same manner as in the first embodiment. It can be transported to the site in stable condition.

■-■1 Effects of the Invention As explained above, according to the method for transporting a unit according to the present invention, the bushing holder is temporarily attached to the outlet flange provided at the bottom of the cutoff tank and transported, so the bushing holder is not used as in the conventional case. There is no need to place it on a truck separately from the shutoff tank, and there is no need for a support frame.

In addition, the blind cover attached to the upper outlet flange where the bushing holder should originally be attached will be removed from the lower outlet flange after transportation.
Since it can be attached to the lunge, the blind lid can be replaced with one
There's no such thing as wasting a sheet.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the first embodiment showing the unit transportation method according to the present invention, FIG. 2 is an explanatory diagram of the second embodiment, and FIG.
IA) is a block diagram of the unit, and Figure 3(b) is a diagram of Figure 3(a).
) and FIG. 4 are explanatory diagrams showing a conventional unit transportation method. 1...Shutoff tank, 6.7...Pipeline, 10.11
... Main bus bar, 14... Breaker, 20, 21.34
...Outlet flange, 22...Bushing receiver.

Claims (1)

[Claims] (1) On one side of the breaker tank that houses the breaker, connect a conduit for arranging the main bus bar connected to the breaker, while on the other side of the tank, connect the load to the breaker. In a method of transporting a gas insulated switchgear unit that is used to connect bushing holders that protrude upwards and is used for A method for transporting a gas insulated switchgear unit, characterized in that the gas insulated switchgear unit is transported in the same state.