JPH01164013A - Gas insulation device directly connected with transformer - Google Patents

Abstract

PURPOSE:To dispense with any special device for mounting-and-dismounting for reducing the total size of a transformer and gas insulation apparatus, by providing an expansion joint of the connecting section in the transformer at a position where it is mountable-and- dismountable and at the same time providing mounting-and-dismounting function inside the transformer. CONSTITUTION:A mounting-and-dismounting conductor 25 is tightened electrically and mechanically by bolts 32 to a conductor 26 on the left and to a connecting conductor 27 on the right. The bolts 32 can be tightened or removed by removing a shield 24 which is fixed to the mounting-and-dismounting conductor 25 with a bolt 33. After removing the mounting-and- dismounting conductor 25 and the connecting conductor 27 through a working manhole which the blank covers 34, 35 are removed, an expansion joint A23 is shortened with a stud 38 and a nut 39. As a result, a container B22, which has an insulating spacer 28 and the conductor 26, can be moved in the direction of an arrow Y1 until the inside of the container B22 is brought into contact with a shield 36. Since a transformer 1 and a gas insulation apparatus 6 are designed so that there is a space 37 between an adjacent conductor 31 and the insulation spacer 28, that is, between parts both protruding most, the transformer 1 and the gas insulation device 6 can be completely separated electrically and spatially by moving the container B22 in the direction of an arrow Y2.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention provides a transformer that is located between a transformer and gas-insulated equipment connected to the transformer, and that improves the transformer connection part that connects the two. This relates to gas insulated equipment directly connected to the equipment.

(Prior Art) Generally, a connection part between a transformer and gas insulated equipment connected thereto is provided with an attachment/detachment device using an expansion joint. This conventional attachment/detachment device consists of a combination of an expansion joint, a connection conductor, and a detachable conductor at the connection portion, and is configured to first compress the expansion joint and then detach the connection conductor and detachment conductor from the conductor of the mating device. By providing such an attachment/detachment device, the transformer and gas insulated equipment are separated, and each can be removed independently.

(Problem to be solved by the invention) However, if such an attachment/detachment device is provided, expansion joints and insulating spacers are required, and a large amount of space is taken up, making it difficult to connect transformers and gas insulated equipment. Even though we are trying to reduce the space by connecting directly, the effect is diminished. That is, the overall space of the transformer and the gas insulated equipment connected thereto becomes larger.

An object of the present invention is to provide a gas insulated device directly connected to a transformer, which has an improved attachment/detachment device and a reduced space.

[Configuration of the Invention (Means for Solving the Problems)] The transformer-directly connected gas insulated equipment of the present invention includes an expansion joint for dimension adjustment in a transformer connection section housing an oil-gas bushing having an expansion joint for adjusting the dimensions. It is characterized by the fact that it is used to provide a non-functional feature.

(Function) In the present invention, when an oil-insulated transformer and a gas-insulated device are directly connected, an oil-gas bushing is always required, and a transformer connection part for housing the bushing is also required. Therefore, by providing a detachable conductor inside this and providing a detachable function to the transformer connection part, it is possible to reduce the amount of equipment in terms of space. It also leads to improvements in performance.

(Embodiments) The present invention will be described below with reference to embodiments shown in FIGS. 1, 2, and 3. In FIG. 1, a transformer connection section 20 with a detachable function is provided between the transformer 1 and the gas insulated equipment 6. As shown in FIG. 2, this transformer connection part 20 with detachable function connects the transformer between a container A21 connected to the flange of the oil-gas bushing 3 housed inside and a container B22 on the gas insulated equipment side. 1 and the gas insulated equipment 6, and has an expansion joint A23 having the expansion and contraction capacity necessary for adjusting the dimensions and attaching and detaching the shield 242 and the gas insulated equipment 6. Connecting conductor 2
7 and the current-carrying conductor 27 provided on the insulating spacer 28
A conductor 26 is provided which is fixed to or supported by a sliding structure, and roughly this current-carrying conductor 29 has a structure in which it can slide on an adjacent conductor 31.

The details of the detachable conductor 25 are shown in FIG. 3, and the detachable conductor 25 is electrically and mechanically fastened to the left and right conductors 26 and the connecting conductor 27 by bolts 32. Note that this bolt 32 can be removed by removing the shield 24 which is fixed to the detachable conductor 25 by the bolt 33.
It is possible to tighten, remove, etc.

Next, the operation of the transformer-directly connected gas insulated equipment of the present invention constructed as described above will be explained. 6 in Figure 2, blind lid 34.3
Attach/detach conductor 25 from the work manhole from which 5 was removed. After removing the connecting conductor 27, attach the expansion joint A23 to the stud 38. Shrink with nut 39. As a result, as shown in Figure 4, the arrow Y
Container B with insulating spacers 28 and conductors 26 in one direction
Move 22. At this time, when the inside of the container B22 moves until it hits the shield 36, a gap 31 is created between the adjacent conductor 31 and the insulating spacer 28, that is, between the most protruding parts of both (upper and lower sides). By making the dimensions related, it can be roughly moved in the direction of arrow Y2,
The transformer 1 and the gas insulated equipment 6 can be completely separated electrically and spatially.

In addition to this embodiment, if the shield 36 is involved, it may be removed, and the present invention can also be applied to a three-phase to bracket type transformer connection section.

[Effects of the Invention] As explained above, in the present invention, the expansion joint of the transformer connection part is brought to a position where it can be attached and detached, and the attachment and detachment function is provided inside, so that a special attachment and detachment device is not required. This eliminates the need for the transformer and the entire gas insulated equipment. .

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the transformer-directly connected gas insulated equipment of the present invention, Fig. 2 is a cross-sectional view showing the transformer connection part with detachable function, and Fig. 3 is a cross-sectional view showing the detachable conductor part thereof. FIG. 4 is a sectional view showing a state in which the connecting portion of the transformer with detachable function is in the process of being attached or detached. 1...Transformer 20...Detachable transformer connection parts 21, 22...Container 23...Expansion joint 25...Detachable conductor 27...Connecting conductor 36...Shield agent Patent attorney Shi Nori Ken Chika Yudo Ken Daishimaru

Claims (1)

[Claims] In the transformer connection part that houses the oil-gas bushing that connects the transformer and gas insulated equipment, there is a removable conductor between the bushing and the gas insulated equipment side, and there are two cases that are divided into two parts. A gas insulated device directly connected to a transformer, characterized in that an expansion joint is provided between the two cases, and when the expansion joint is contracted, a part of the conductor, etc., can be removed from the manhole of the other case.