JPS6225244B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to static induction electric appliances such as split transformers and reactors, and particularly to a connection device between a plurality of static induction electric appliance units arranged in parallel.

For example, in a split type stationary induction electric appliance such as a two-piece type transformer, as shown in Figs. 1 and 2, iron cores 1A, 1B and windings 2A, 2B
The oil tanks 3A and 3B containing the transformer main bodies are arranged side by side, and the mutually opposing sides perpendicular to the arrangement direction of the oil tanks 3A and 3B are connected by a connecting duct 4 having an expansion joint part 4a, and both windings are connected. 2A, 2B exit line 5
A and 5B are electrically connected by a connection lead 7 which passes through the connection duct 4 and is insulated and supported by a support plate 6.

However, in such a conventional split-type stationary induction electric appliance, since the connecting duct 4 is provided between the mutually opposing sides of the juxtaposed tanks 3A and 3B, it is difficult to install the tanks 3A and 3B close to each other. This has the disadvantage that the work of installing the connection duct 4 and the work of connecting the connection lead 7 are troublesome and difficult to perform. That is, in order to juxtapose the tanks 3A and 3B and connect them with the connection duct 4 and connection lead 7, one tank 3A is installed, and one end of the connection duct 4 and the connection lead 7 are connected to this tank 3A. After that, the work is to call the other tank 3B and connect the connection duct 4 and the other end of the connection lead 7.
The installation work is troublesome, making it difficult to install both tanks 3A and 3B close to each other.

An object of the present invention is to provide a split-type stationary induction electric appliance that eliminates the above-mentioned drawbacks of the prior art, facilitates connection work between juxtaposed tanks, and allows each tank to be installed close to each other in a small space. There is something to do.

In order to achieve this object, the present invention forms a connection duct in a substantially U-shape, and penetrates the connection duct with a shield and a barrier insulated connection lead in a substantially U-shape to expose both ends of the connection duct. The connection duct and the shielded barrier insulated connection lead are connected on the side parallel to the direction in which the two tanks are lined up, so that the connection work can be performed at the lateral position of the tank after the tanks are installed in the specified position. It is characterized by the following.

Hereinafter, the present invention will be explained in detail based on illustrated embodiments.

In FIGS. 3 to 5, two oil tanks 3A and 3B arranged side by side contain iron cores 1A and 1, respectively.
A transformer body consisting of windings 2A and 2B is accommodated. The connection duct 8, which is formed in a substantially U-shape, has one bent end portion as an expansion joint portion 8a, and an opening formed on the side surface of the intermediate straight portion in the direction opposite to the bending direction. It is blocked by 8b. A shielded barrier insulated connection lead 9 passes through the inside of the connection duct 8 and is fixed by a mounting bracket 10 . The shielded barrier insulated connection lead 9 is made up of a conductor 9a, a barrier insulation 9b, and a shield fitting 9c, and is formed in a U-shape like the shield connection duct 8.

Therefore, the oil-tight cover 8b of the connection duct 8 is removed, the connection lead 9 is inserted and fixed into the connection duct 8 with the side surface open, and then the oil-tight cover 8b is removed.
If the transport covers 11A and 11B are attached to the openings at both ends as shown in FIG. 6, these can be transported as a unit. Therefore, at the site (installation location), after removing the transportation covers 11A and 11B,
On the horizontal side surface parallel to the line direction of B, the oil tanks 3A, 3B and both ends of the connection duct 8 can be easily connected, and both ends of the conductor 9a and the outlet wires 5A, 5B can be easily connected.

According to this embodiment, the connection duct 8 is formed in a substantially U-shape, and the connection lead 9 is assembled to pass through the connection duct 8, and the lateral side surface parallel to the direction in which the oil tanks 3A and 3B are arranged. Since both tanks will be straddled and connected in an array, the on-site work procedure will be
After installing the two oil tanks 3A and 3B in the predetermined positions, connect the connecting duct 8 on the lateral side of the oil tanks 3A and 3B.
and the connection lead 9 can be combined, resulting in extremely good workability. In addition, since the connection lead 9 is small and has a barrier insulation type with a high withstand voltage shield, there is no need to increase the external dimensions of the connection duct 8, and the connection lead 9 is assembled into the connection duct 8 at the manufacturing factory and transported. By covering the covers 11A and 11B during transportation, it is possible to shorten the assembly work time at the site and the exposure time of the connection lead 9 to the air. Furthermore, since the connection lead 9 can be inserted and fixed into the connection duct 8 through the opening formed when the oil-tight cover 8b of the connection duct 8 is removed, even if the connection duct 8 is U-shaped,
This makes it easier to assemble the connection lead 9 to the connector.

As explained above, according to the present invention, the connection duct is formed in a substantially U-shape, and the substantially U-shaped shielded barrier insulated connection lead is passed through the connection duct to expose both ends thereof. Since the insulated duct and the shielded barrier insulated connection lead are connected on the lateral side parallel to the direction in which the two tanks are lined up, the connection work can be done on the lateral side of the tank after the tanks are installed in the specified position. This simplifies the connection work and allows the tanks to be installed in close proximity in a small space.Furthermore, the use of small, high-withstand-voltage, shielded, barrier-insulated connection leads makes connections easier. The external dimensions of the duct can be reduced. In addition, since the shielded barrier insulated connection lead is assembled inside the connection duct and configured independently from other parts, these parts can be covered with a transport cover and transported separately from other parts, making it easy to carry out on-site work. It is possible to shorten assembly work time and shorten the exposure time of connection leads in the air.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional plan view of a conventional two-part transformer.
FIG. 2 is an enlarged view of the connection part, FIG. 3 is a cross-sectional plan view of a two-part transformer according to an embodiment of the present invention,
FIG. 4 is an enlarged view of the connecting portion, FIG. 5 is a sectional view taken along the line XX in FIG. 4, and FIG. 6 is a cross-sectional plan view of the connecting duct and the connecting lead unit in a transported state. 1A, 1B... Iron core, 2A, 2B... Winding wire, 3
A, 3B...Oil tank, 8...Connection duct, 8b...
Oiltight cover, 9...Barrier insulated lead with shield.

Claims (1)

[Scope of Claims] 1. A first tank that accommodates a first electrical appliance main body, a second tank that is juxtaposed with this first tank and accommodates a second electrical appliance main body, and a first tank that accommodates a second electrical appliance main body; In a split-type stationary induction electric appliance that includes a connection duct that connects the tanks, and a connection lead that passes through the connection duct and electrically connects the first and second electric appliance bodies, the connection duct is approximately The connecting lead is formed in a letter shape, arranged to span both tanks on the side surface parallel to the direction in which the tanks are lined up, and coupled to both tanks, and the connecting lead is configured as a substantially U-shaped shielded barrier insulated connecting lead. death,
A split type stationary induction electric appliance, characterized in that it penetrates into the connection duct and exposes both ends thereof to the outside of the connection duct. 2. The split-type stationary guide according to claim 1, wherein an outer surface of the central portion of the connecting duct opposite to the bending direction of both ends is provided with an opening closed with a sealing cover. Electric appliances.