JPS6023485B2 - transformer - Google Patents

Description

[Detailed description of the invention] [Field of application of the invention] The present invention relates to improvements in transformers.

[Background of the Invention] Figure 1 shows a cross-sectional view of a part of a conventional transformer, in which a winding 1 is wound around an iron core 2, and the end face of the iron core 2 has a height dimension that increases from the side to the center. The upper end of the iron core 2 is formed into a raised approximately triangular shape, and the upper end of the iron core 2 is connected to a groove-shaped iron core tightening fitting 5.
, 5 from both sides, iron core 2, winding 1,
The grooved iron core fastening fittings 5 form the inside of the transformer.

3 is an outer box containing the contents and filled with insulating oil; 4 is a top cover of the outer box 3;

Reference numeral 6 denotes a lifting rod, whose upper end is fixed to the lower surface of the cover 4 and whose lower end is fixed to the horizontal portion 101 of the grooved iron core fitting 5.

Reference numeral 7 denotes a lifting fitting attached to the top cover 4.

Note that the groove-shaped iron core fastening fitting 5 was constructed using channel steel or by bending a steel plate into a groove shape. When lifting the contents, use a crane or the like to lift the lifting fittings 7.
was lifted, and the top cover 4 and contents were removed at the same time. Note that the A side indicates the high voltage lead wire extraction side, and the B side indicates the low voltage lead wire extraction side. In the conventional transformer, since the horizontal portion 10 of the groove-shaped core attachment fitting 5 protrudes, the space for internal connection wires inside the outer box 3 is narrowed, and the wiring inside the transformer (Fig. In order to ensure an insulating distance between the inner metal fittings (not shown), it is necessary to increase the width of the outer box 3, and the amount of insulating oil also increases.

Furthermore, as the width of the outer box 3 increases, there is a disadvantage that the hem area increases.Also, when lifting a heavy load inside the transformer, the mounting part of the lifting rod 6 must be placed horizontally. A large moment acts on the portion 10, and when the contents of the large capacity transformer are transported or moved, the mechanical strength of the horizontal portion 10 is weak and there is a risk of damage. [
OBJECT OF THE INVENTION An object of the present invention is to provide a transformer that can be made smaller and lighter.

[Summary of the invention]

The transformer of the present invention comprises a core having a substantially triangular end surface, a core including a winding wound around the core, an outer box containing the core, and a flat core that fixes the core from both sides. A metal fitting, a metal fitting for connecting the above-mentioned flat iron core tightening metal fitting, and a lifting rod are provided on the connecting metal fitting.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to FIG.

Flat iron fasteners 8 made of flat plate material are provided on both sides of the iron core 2, and their upper ends 8A extend to the substantially triangular end surface 2A of the iron core 2. That is, the height of the end surface 2A increases from the side surface 2B toward the center portion 2C, and the connecting fitting 9 is installed between the upper end portions 8A extending to the height of the side surface 2B. The connecting fitting 9 is composed of a lower connecting fitting 9A and an upper connecting fitting 9B. Lower connection fitting 9
A is arranged along the triangular end surface 2A of the iron core 2, is supported by the upper end portion 8A of the flat iron core cotton fitting 8 on the lower surface side of both ends, and has a support seat 9C attached to the upper surface side. An upper connection fitting 9B is attached on top of the support seat 9C. The upper end part 8A is connected to the corresponding upper connection fitting 9B for lifting. Install Tsudo 6,
A nut is inserted into the screw at the lower end of the lifting rod 6, and the height of the mounting position is fixed so as to be freely adjustable. [Effects of the Invention] In this configuration, the upper end portion 8A of the flat iron core fastening fitting 8 extends to the triangular, low-height side surface 2B of the core end surface, and is suspended from the upper connecting fitting 9B corresponding to the upper end portion 8A. Since the upper rod 6 is provided, the space between the flat iron core vertical fitting 8 and the upper surface cover 4 can be reduced.

Therefore, the height of the outer box 4 can be reduced, so that the height of the transformer can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a hanger part of a conventional transformer, and FIG. 2 is a cross-sectional view of a hanger part of an embodiment of a transformer according to the present invention.

1...Winding, 2...Iron core, 3...Outer box, 4...
Cover, 6... Lifting rod, 8... Flat iron core tightening fitting, 9... Connection fitting.

hair figure Multi 2 drawings

Claims (1)

[Claims] 1. A flat iron core clamp that houses an outer case and a substantially triangular iron core with windings installed inside the outer case and whose end faces increase in height from the sides toward the center, and which clamps and fixes the iron core from both sides. Extend the upper end of the mounting bracket and the flat core clamping bracket to between the side surface and the center of the core end face, and install the connecting bracket between the upper ends, and connect the connecting bracket and outer box that correspond to the flat core clamping bracket. A transformer characterized in that a lifting rod is provided between the top cover and the top cover.