JPS61247203A - Cubicle type gas insulated switchgear - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a cubicle type gas insulated switchgear in which the arrangement of built-in components including a vacuum circuit breaker is improved.

[Background of the invention]

Conventionally, vacuum circuit breaker cubicles of 36KV class or lower used air or solid insulation for correlation and ground insulation, but recently cubicles have become more popular due to improved environmental resistance, labor-saving maintenance, and smaller external dimensions. Systems began to be adopted in which vacuum circuit breakers, Kasuri liners, busbars, etc. were sealed together with 8F6 gas. However, there is no particular standard arrangement, and the revised S is stacked on top of each other. Related devices of this type include, for example, Japanese Unexamined Patent Application Publication No. 59-3
No. 3720, JP-A-54-143840, and the like.

[Purpose of the invention]

The purpose of the present invention is to efficiently reduce the width and depth of the cubicle in the case of a single busbar system, and to shorten and easily reduce the main circuit conductor between the vacuum valve and the new circuit in the case of a double busbar system. The purpose of the present invention is to provide a cubicle type gas insulated switchgear that can be connected to a cubicle type gas insulated switchgear.

[Summary of the invention]

The cubicle type gas insulated switchgear of the present invention is:

If the vacuum valves for three phases are arranged in a triangle, and the main circuit conductor connecting the vacuum valve and the disconnector is arranged in the f111 row between the two vacuum valves from the side section, in the case of a double bus, the vacuum The above object is achieved by arranging the connecting conductors of the two new circuit devices on the valve in an L-shape so that no extra conductors are required.

[Example of Shinmei]

7 Below 1 An embodiment of the present invention will be described with reference to FIGS. 1 to 5.

In the figure, l denotes a lower cubicle having several openings and is airtightly constructed of various members including reeds and a lid 2.

A next cable head 4 is attached to the lower part of the lower cubicle 1 in an airtight manner using an O-ring or the like, for insulating the cable 3 drawn in from the outside and guiding it into the lower cubicle 1. A terminal 5 electrically connected to the cable 3 is attached to the upper end of the cable head 4.
It is attached to the fixed side conductor 7 of the vacuum valve 6 for disconnection with bolts or the like. Above the vacuum valve 6, a movable conductor 8 which is electrically connected to and separated from the fixed conductor 7 extends and is connected to an insulated operating rod 9 by a pin 10.

The insulated operating rod 9 is made airtight and the lower cubical/1
, 1 and the bottle 12 pulled out into the air outside
are connected. The lever 11 is an operating rod or the like (not shown), which is placed in the air and connected to the 7'tll disconnector operating device 13.

On the other hand, the movable conductor 8 of the vacuum valve 6 is electrically connected to the holding conductor 17 of the new path 516 via the current collector 15 which is attached to the intermediate conductor 14 and also serves as a guide for the vacuum valve 6.

The holding conductor 17 is hermetically fixed to an insulating paste 18, and a movable plate 19 is pressed onto the upper part by a spring with the bottle 20 as a fulcrum. The upper end of the blade 19 is attached to the connecting conductor 21 and comes into contact with the next-plane contactor 22 . The connecting conductor 21 and the mother @ 23 are connected through an insulator 24.

The pace 25 is fixed to the pace 25 and the pace 25 is attached to the upper cubicle 26. A working opening 27 is airtightly sealed on the upper surface of the pace 25 with a reed and a lid 2B via an O-ring or the like.

On the other hand, the insulated operating rod 29 is attached to the blade 19 and the bin 30
The second lever 3 and the bottle 32 are connected to each other and are pulled out in an airtight manner outside the upper cubicle 26.
are connected. The second lever 31 is connected to a disconnector operating device 33 disposed in the air by operating the lever 7 (not shown) or the like. 334 is the fixed side of the contactor used for grounding, and when the blade 19 of the new circuit switch is moved until it comes into contact with this grounding contactor 34, it functions as a grounding switch. Note that the space between the upper cubicle 27, the lower cubicle 1, and the insulating space 11; 8 is made airtight with an O-ring or the like, and is attached with a bolt or the like. 35 is a lower frame that supports the cubicle, and 36 is an operation case. The cubicle 1.26 is filled with rsP6 gas having a high insulation strength, and the inside of the lower frame 35 is filled with the atmosphere.

As described above, in the present invention, as shown in FIG. 2, the vacuum valves 6A, 6B, and 6C are arranged in a triangle, so the three-phase holding conductors 17A, 17B, and 17C can be arranged in parallel to correspond to each other . As a result.

Three-phase blades 19 are connected to the upper sides of the holding conductors 17A, 17B, and 17C so as to correspond to the respective vacuum valves 6A, 6B, and 6C. Tsumashi, floor conductor 17A S-17c
Since each of the vacuum valves 6A to 6C and the blade 19 can be connected at the shortest distance, it is economical with less energy loss, and the intermediate conductor 1 can be connected to one end of the holding conductors 17A to 17C.
4A-14C and attach the blade 19 to the other end, the connection work is easy.

Next, each of the vacuum valves 14A to 14C is arranged in a triangular arrangement, and one device can be installed in Moeji ff1S16 corresponding to each vacuum valve, so the cubicle container can have the same shape.
Easy to standardize.

On the other hand, in the case of a double bus system, as shown in Fig. 5, the upper cubicle 26 including the built-in parts is rotated by K-90 degrees and the side cubicle 37 is almost the same as the side cubicle 37, and the lid 2 is removed from the lower cubicle. Install it in the correct position. In this case, the length of the holding conductor 38 and the shape of the intermediate conductors 39 and 40 may be partially changed to connect them to each other. It is also necessary to add one operating device 33 for the disconnector 16. An opening 41 for internal work is provided in the lower cubicle l, and the opening 41 is hermetically sealed via an O-ring or the like. Of course, it may also be provided in the case of a single bus bar to standardize the members.

With the above configuration, even in the triangular arrangement design of the vacuum valves 6A to 6C that can reduce the outer ring dimensions of the cubicle, the disconnector 16 is arranged in a straight line for three phases, so all three phases can be made into the same shape. Easy to configure. In the case of a secondary multi-bus, the intermediate conductors 39 and 40 connected almost right beside the holding conductor 38 in the additional bus bar room can be arranged in parallel for three phases.

The length of the conductor can be shortened, and fi! Easy to continue. Furthermore, in the case of the single bus bar shown in Figure 2, the true outside of the square range (■) limited by the outer shape of the vacuum valve parallel to the four sides that form the outer shape of the lower cubicle 5 is the next line where no charged objects other than the bulb are located. In addition, the size of the lower cubicle can be determined by considering only the insulation from the vacuum valve, making insulation design easy.

〔Effect of the invention〕

According to the present invention, it is possible to create a compact device that allows flexibility in selecting the width and dimensions of the cubicle, making it easy to reduce the installation area and reduce the weight of the product. becomes. Even in the case of a multi-bus system, there is almost no need to change the basic shape just by adding a similar one, and the length of the connecting conductor can be made very short, making it possible to standardize parts and make it inexpensive and reliable. It has the effect of being able to be used as a product.

[Brief explanation of the drawing]

Fig. 5 is a side sectional view of a single busbar system showing a closed circuit state of the gas insulated switchgear of the present invention, Fig. 42 is a view taken along line A-A' in Fig. 1,
FIG. 3 is a BB' view of FIG. 1. The fourth factor is the open-circuit state diagram shown in FIG. 1, and FIG. 5 is a side sectional view of the double bus system showing the closed-circuit state of the gas-insulated switchgear of the present invention. l...lower cubicle, 3...cable, 4...
・Cable head, 6...X2i! , valve, 7...
・Fixed side conductor, 8... Possible m @ width body, 9... Insulated operation rod, 14... Intermediate conductor, 15... Next electronic, 16
... Disconnector, 17... Holding conductor, 19... Movable blade, 22... Fixed contact. 23...Bus bar, 26...Upper cubicle, 29.
...Insulated operating rod, 34...Grounding contact, 37.
...Side cubicle, 38...Holding conductor, 39...
・Intermediate conductor.

Claims (1)

[Claims] 1. A three-phase vacuum valve is placed in a sealed container filled with insulating gas, and a rod protrudes from one side of each vacuum valve, and an intermediate conductor protrudes perpendicularly to the rod and is connected to the rod. and a disconnection section connected to the intermediate conductor via a holding conductor, in which the holding conductors of the three phases are arranged correspondingly to each other, the end intermediate conductor is connected to the holding conductor at both ends, and the intermediate holding conductor is connected to the holding conductor at both ends. A cubicle-type gas insulated switchgear characterized in that three-phase vacuum valves are arranged in a triangle by connecting an end intermediate conductor and an intermediate conductor extending in the opposite direction to the conductor.