CN206163285U - Transformer coil insulating structure - Google Patents

Abstract

The utility model relates to a transformer coil insulation structure, which belongs to the technical field of transformer manufacturing. The technical solution is: the upper and lower ends of the transformer coil body (1) are provided with coil end heads (2), and a plurality of stays (3) are evenly arranged in the circumferential direction of the transformer coil body (1), and two adjacent stays Insulation pads (4) are provided between (3) and at the position where the coil end protrudes from (2), and two parallel grooves (7) are provided on the outer surface of the insulation pads (4) , the outer side of the transformer coil body (1) is provided with an insulating strap (6) along the circumferential direction, and the insulating strap (6) is arranged in the groove (7) on the outer side of the insulating pad (4), and the transformer coil body (1) Lead out multiple branch wires (5). The utility model has the beneficial effects of reducing the occurrence of deformation accidents of coils protruding and improving the anti-short circuit capability of transformer coils to a certain extent.

Description

A transformer coil insulation structure

technical field

The utility model relates to a transformer coil insulation structure, in particular to the insulation at the head of an outer coil, and belongs to the technical field of transformer manufacturing.

Background technique

At present, the requirements for the short-circuit resistance capability of large transformers are getting higher and higher, especially for nuclear power products, the requirements for this aspect are even stricter.

During the operation of the transformer, when there is a sudden short circuit, the impact on the coil is very large, especially at the head of the outer coil, which is very easy to crack and deform due to the force, causing accidents and affecting the performance of the transformer.

Utility model content

The purpose of the utility model is to provide a transformer coil insulation structure, an insulating spacer is provided at the position where the end of the coil protrudes and between two adjacent stays, so as to solve the problems existing in the background technology.

The technical scheme of the utility model is:

A transformer coil insulation structure, including a transformer coil body, a coil end head, a stay, an insulating pad, a branch wire head, an insulating strap and a groove, the upper and lower ends of the transformer coil body are provided with a coil end head, and the transformer A plurality of stays are evenly arranged in the circumferential direction of the coil body, and insulating pads are provided between two adjacent stays and at the position where the end of the coil protrudes. Parallel grooves, the outer side of the transformer coil body is provided with insulating straps along the circumferential direction, and the insulating straps are arranged in the grooves on the outer side of the insulating pad, and a plurality of tap wires are drawn from the transformer coil body.

Three insulating straps are arranged in the groove on the outer surface of the insulating spacer.

The beneficial effect of the utility model is that an insulating spacer is provided at the position where the end of the coil protrudes and between two adjacent stays, and an insulating bandage is used to fix and bind the coil along the circumferential direction of the coil, so that the outer coil is short-circuited externally It is not easy to deform under the environment, which greatly improves the short-circuit resistance of the transformer coil.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is the front view of the insulating spacer;

Fig. 3 is a side view of an insulating spacer;

Figure 4 is a top view of the insulating spacer;

In the figure: Transformer coil body 1, coil end head 2, stay bar 3, insulating pad 4, branch wire head 5, insulating strap 6, groove 7.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described by example.

Referring to accompanying drawings 1, 2, 3, and 4, a transformer coil insulation structure includes a transformer coil body 1, a coil end head 2, a stay 3, an insulating spacer 4, a branch wire head 5, an insulating strap 6 and a concave Slot 7, the upper and lower ends of the transformer coil body 1 are provided with a coil end head 2, and a plurality of stays 3 are evenly arranged in the circumferential direction of the transformer coil body 1, and between two adjacent stays 3 and the coil end head 2 Insulation pads 4 are provided on the positions, and two parallel grooves 7 are arranged on the outer surface of the insulation pads 4. The outer side of the transformer coil body 1 is provided with insulating straps 6 along the circumferential direction. The insulating strap 6 is arranged in the groove 7 on the outer surface of the insulating pad 4 , and a plurality of tap wire outlets 5 are drawn from the transformer coil body 1 .

In this embodiment, after the winding of the outer coil is completed, an insulating spacer 4 is placed in the upper and lower ends of the transformer coil body 1 and in the space between the struts 3 adjacent to the position of the head, away from the position of the head of the coil, or according to Place the insulating spacer 4 in the specific situation, and then use the insulating bandage 6, that is, the PET bandage, to fix and bind along the circumferential direction of the coil, and bind three PET bandages in the groove 7 on the outer side of the insulating spacer 4 . It reduces the occurrence of coil deformation accidents, and improves the short-circuit resistance of the transformer coil to a certain extent.

Claims (2)

1. A transformer coil insulation structure, characterized in that it includes a transformer coil body (1), a coil end head (2), a stay (3), an insulating pad (4), a branch wire head (5), an insulation tie With (6) and grooves (7), the upper and lower ends of the transformer coil body (1) are provided with coil end heads (2), and a plurality of stays (3) are evenly arranged in the circumferential direction of the transformer coil body (1) , between two adjacent stays (3) and at the position where the end of the coil (2) protrudes, an insulating spacer (4) is provided, and the outer surface of the insulating spacer (4) is provided with two mutual Parallel grooves (7), the outer side of the transformer coil body (1) is provided with insulating straps (6) along the circumferential direction, and the insulating straps (6) are arranged in the grooves on the outer side of the insulating pad (4) ( 7) Inside, multiple tap wires (5) are drawn from the transformer coil body (1). 2. The transformer coil insulation structure according to claim 1, characterized in that three insulating straps (6) are arranged in the groove (7) on the outer surface of the insulating spacer (4).