CN-224203941-U - Insulating tapping three-phase dry-type transformer

Abstract

The utility model provides an insulating tapping three-phase dry-type transformer which comprises a transformer shell provided with windings, wherein the windings comprise a low-voltage winding and a high-voltage winding, and can efficiently realize voltage conversion. The winding guide rod is provided with a winding insulation assembly formed by a winding insulation layer and interlayer insulation, so that current leakage and short circuit are effectively prevented. The winding guide rod realizes high-efficiency electrical isolation through the winding insulating layer and interlayer insulation, and ensures the safe operation of the equipment in a high-voltage environment. The outer surface of the transformer shell is provided with the auxiliary radiating fins, so that the radiating efficiency is effectively improved, and meanwhile, the antirust paint layer is coated to enhance corrosion resistance. The bottom support system is composed of a bottom frame, mounting channel steel and insulating sleepers, and is matched with the isolation plate and the mounting cone seat, so that stable operation of equipment is ensured, and good electrical isolation is provided. The whole design gives consideration to high-efficiency voltage transformation, reliable insulation protection, stable mechanical support and convenient maintenance operation.

Inventors

• LIU ZHOU
• MOU MENGDAN
• ZHU JINTAO
• CHEN KAI

Assignees

• 华通机电股份有限公司

Dates

Publication Date

20260505

Application Date

20250427

Claims (10)

1. 1. The utility model provides an insulating tapping three-phase dry-type transformer, includes transformer housing (1), its characterized in that, transformer housing (1) is provided with winding (2), be provided with winding guide arm (3) on winding (2), be provided with winding insulation component on winding guide arm (3), the surface of transformer housing (1) is provided with auxiliary cooling fin (7), the top of transformer housing (1) is provided with tapping mechanism.
2. 2. An insulated tapped three-phase dry transformer according to claim 1, wherein the windings (2) comprise a low voltage winding and a high voltage winding.
3. 3. An insulation tapped three-phase dry transformer according to claim 2, characterized in that the winding insulation assembly comprises winding insulation layers (4) and an interlayer insulation (5), the group of insulation layers being arranged on the winding guide rods (3), the interlayer insulation (5) being arranged between the winding insulation layers (4).
4. 4. An insulated tapped three-phase dry transformer according to claim 3, characterized in that the winding guide (3) is mounted on a winding support (6), which winding support (6) is arranged on the transformer housing (1).
5. 5. An insulated tapped three-phase dry transformer according to claim 4, characterised in that the outer surface of the transformer housing (1) is coated with a rust inhibitive paint layer.
6. 6. An insulation tapped three-phase dry transformer according to claim 5, characterized in that the bottom of the transformer housing (1) is provided with a chassis (8), the chassis (8) is provided with mounting channels (9) below, the mounting channels (9) being mounted on insulation sleepers.
7. 7. An insulated tapped three-phase dry transformer according to claim 6, characterized in that the tapping mechanism is provided with tapping rods (10), above which tapping contacts (11) are provided.
8. 8. An insulation tapped three-phase dry transformer according to claim 7, characterized in that an iron core (12) is arranged in the transformer housing (1), the iron core (12) being provided with three-phase coils (13).
9. 9. An insulation tapped three-phase dry transformer according to claim 8, characterized in that the three-phase coil (13) is provided with clamping plates (14), the clamping plates (14) being provided with connection contacts (15).
10. 10. An insulation tapped three-phase dry transformer according to claim 9, characterized in that a separator (16) is arranged below the three-phase coil (13), and a mounting cone (17) is arranged at the corner of the separator (16).

Description

Insulating tapping three-phase dry-type transformer Technical Field The utility model relates to the field of transformers, in particular to an insulation tapping three-phase dry-type transformer. Background In an electric power system, a three-phase dry-type transformer is key equipment for realizing voltage conversion and distributing electric energy, and is widely applied to a plurality of fields of industry, commerce and residential electricity. With the increase of power demand and the diversification of electric equipment, higher requirements are put on the performance and reliability of transformers. However, existing insulation tapped three-phase dry transformer technology has some disadvantages: 1. The winding insulation of the traditional transformer is weak in terms of insulation performance, the winding insulation design of the traditional transformer is not perfect, insulation measures between winding guide rods and windings and between winding layers are insufficient, and problems of leakage and interlayer short circuit are easy to cause. This not only affects the normal operation of the transformer, but also may cause safety accidents, threatening the safety of equipment and personnel. The insulating material is fast in aging, and the aging speed is fast and the insulating performance is gradually reduced when part of the insulating materials used by the existing transformers are in a severe environment with high temperature and high voltage for a long time. This increases the risk of a failure of the transformer, requiring frequent replacement of the insulating parts, increasing maintenance costs and power outage time. 2. The design of traditional tapping mechanism makes the voltage regulation scope of transformer narrower relatively, is difficult to satisfy the diversified demand of different consumer to voltage. When the voltage requirement of electric equipment exceeds the voltage regulation range of the transformer, the transformer needs to be replaced or other voltage regulation equipment is adopted, so that the cost and the complexity are increased, and the transformer is improved. Disclosure of utility model The utility model aims to solve the problems of the prior art. In order to achieve the aim, the utility model provides the technical scheme that the insulated tapping three-phase dry-type transformer comprises a transformer shell, wherein a winding is arranged on the transformer shell, a winding guide rod is arranged on the winding, a winding insulation component is arranged on the winding guide rod, an auxiliary radiating fin is arranged on the outer surface of the transformer shell, and a tapping mechanism is arranged above the transformer shell. As a preferred embodiment of the present utility model, the winding includes a low voltage winding and a high voltage winding. As a preferable technical scheme of the utility model, the winding insulation assembly comprises winding insulation layers and interlayer insulation, wherein the group insulation layers are arranged on the winding guide rod, and interlayer insulation is arranged between the winding insulation layers. As a preferred embodiment of the utility model, the winding guide is mounted on a winding support, which is arranged on the transformer housing. As a preferable technical scheme of the utility model, the outer surface of the transformer shell is coated with an antirust paint layer. According to the preferred technical scheme, the bottom of the transformer shell is provided with the underframe, the mounting channel steel is arranged below the underframe, and the mounting channel steel is arranged on the insulating sleeper. As a preferable technical scheme of the utility model, the tapping mechanism is provided with a tapping rod, and a tapping contact is arranged above the tapping rod. As a preferable technical scheme of the utility model, an iron core is arranged in the transformer shell, and the iron core is provided with three-phase coils. As a preferable technical scheme of the utility model, the three-phase coil is provided with a clamping plate, and the clamping plate is provided with a wiring contact. As the preferable technical scheme of the utility model, a separation plate is arranged below the three-phase coil, and an installation cone seat is arranged at the corner of the separation plate. Compared with the prior art, the winding insulation assembly has the beneficial effects that the winding insulation assembly plays a key role, the winding insulation layer wraps the winding guide rod, electric leakage is effectively prevented, and interlayer insulation avoids interlayer short circuit of the winding. The safety of the operation of the transformer is improved, the occurrence probability of electrical faults is reduced, the personal safety of operators can be guaranteed, and the transformer is suitable for places with high insulation requirements. The auxiliary radiating fins are arranged on the outer surf