CN217181983U

CN217181983U - Structure for improving vibration and impact resistance of tower transformer

Info

Publication number: CN217181983U
Application number: CN202220681082.0U
Authority: CN
Inventors: 任宪才; 单震广; 杨亚如; 孙存彬; 李莉; 胡翔宇
Original assignee: Shandong Dachi Electric Co Ltd
Current assignee: Shandong Dachi Electric Co Ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-08-12
Anticipated expiration: 2032-03-28

Abstract

The utility model discloses a structure for improving the vibration and impact resistance of a tower transformer, wherein the tower transformer adopts a dry type transformer, the dry type transformer comprises an iron core, a low-voltage coil and a high-voltage coil, the low-voltage coil and the high-voltage coil are sleeved on the iron core, and iron core clamping pieces are arranged at the upper end and the lower end of the iron core; it is characterized in that: each winding sleeved in the low-voltage coil is cast into an integral structure by resin, an air channel plate is pre-embedded between every two adjacent windings, and the air channel plate is drawn out after casting molding to form a ventilation air channel; an insulation cylinder is arranged between the low-voltage coil and the high-voltage coil at intervals; insulating cushion blocks are arranged at two ends of the low-voltage coil and the high-voltage coil and are positioned between the end face of the coil and the iron core clamping piece, and a pressing bolt is arranged on the iron core clamping piece to tightly press the insulating cushion blocks, so that the coil is tightly pressed. The utility model discloses simple structure, convenient to use, firm reliable mainly are applied to and improve the transformer and vibrate in a tower section of thick bamboo and guarantee the structural stability of transformer in the operational environment who assaults.

Description

Structure for improving vibration and impact resistance of tower transformer

Technical Field

The utility model relates to an improve structure of a tower section of thick bamboo transformer anti-vibration and impact belongs to a tower section of thick bamboo dry-type transformer field.

Background

Wind power is taken as a clean renewable energy source and is more and more emphasized by the world, in recent years, the development of wind power is rapid, the investment of various countries in the aspect of wind power development and utilization is continuously enhanced, the manufacturing of wind power generation equipment becomes one of the popular economic fields of many countries, the corresponding market scale is rapidly enlarged, at present, the land saving becomes a popular topic, and a layout mode placed in a cabin is born, but the mode faces the influence of long-term vibration and impact on a transformer in a tower barrel of a fan, so that the structural looseness of the transformer and the position movement of parts can be caused. It is therefore important to enhance the vibration and shock resistance of the tower transformer.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a remedy prior art not enough, provide a convenient to use, firm reliable structure of improvement tower section of thick bamboo transformer anti-vibration and impact.

The utility model discloses a realize through following technical scheme:

a structure for improving vibration resistance and impact resistance of a tower-tube transformer is characterized in that the tower-tube transformer adopts a dry-type transformer and comprises an iron core, a low-voltage coil and a high-voltage coil, wherein the low-voltage coil and the high-voltage coil are sleeved on the iron core; it is characterized in that: each winding sleeved in the low-voltage coil is cast into an integral structure by resin, an air channel plate is pre-embedded between every two adjacent windings, and the air channel plate is drawn out after casting molding to form a ventilation air channel;

an insulation cylinder is arranged between the low-voltage coil and the high-voltage coil at intervals; insulating cushion blocks are arranged at two ends of the low-voltage coil and the high-voltage coil and are positioned between the end face of the coil and the iron core clamping piece, and a pressing bolt is arranged on the iron core clamping piece to tightly press the insulating cushion blocks, so that the coil is tightly pressed.

One side of the insulating cushion block is provided with an arc-shaped boss, and the boss is inserted into a gap between the high-voltage coil and the low-voltage coil for fixing; the boss is provided with an arc-shaped clamping groove, and the end part of the insulating cylinder between the low-voltage coil and the high-voltage coil is inserted into the clamping groove; the other side of the cushion block is provided with a groove matched with the pressing nail, a steel plate cushion is placed in the groove for reinforcement, and the steel plate cushion enhances the vibration and impact resistance.

A plurality of vertical supporting strips which are uniformly distributed are added between the low-voltage coil and the iron core, so that the low-voltage coil and the iron core are firmly fixed with each other, and the relative displacement between the low-voltage coil and the iron core caused by vibration is prevented.

A section of gap is reserved between the adjacent air channel plates, and resin in the gap is used for bonding the inner and outer adjacent low-voltage windings together.

The insulating cylinder is made of resin, the insulating cushion blocks are made of resin, and inclined planes used for avoiding the iron core are arranged on one sides of the insulating cushion blocks.

The beneficial effects of the utility model are that, dry-type transformer uses anti-vibration and impact technique, makes the transformer cause the probability of damage to have reduced 40% because of vibration and impact under the same condition. The failure rate of the transformer is greatly reduced, and the reliability of the transformer is improved. The utility model discloses simple structure, convenient to use, firm reliable mainly are applied to and improve the transformer and vibrate in a tower section of thick bamboo and guarantee the structural stability of transformer in the operational environment who assaults.

Drawings

The attached drawing is the structure schematic diagram of the utility model.

Fig. 1 shows the low-voltage winding of the dry-type transformer by integral casting.

Fig. 2 shows the dry-type transformer with the low-voltage coil and the iron core fixed by a stay.

Fig. 3 shows that the dry-type transformer cushion block fixing boss and the groove are internally reinforced and supported by a steel plate cushion.

Fig. 4 and 5 are front and bottom views of the spacer.

Fig. 6 is a schematic side half-section view of a transformer.

In the figure, 1 low-voltage coil, 2 ventilation air passages, 3 supporting strips, 4 iron yokes, 5 high-voltage coils, 6 insulating cushion blocks, 7 cushion block bosses, 8 iron core columns, 9 pressing nail bolts, 10 steel plate cushions, 11 grooves, 12 insulating cylinders, 13 iron core clamping pieces, 15 inclined planes and 16 arc-shaped clamping grooves.

Detailed Description

The attached drawing is an embodiment of the invention.

The utility model discloses a structure for improving the vibration resistance and impact resistance of a tower transformer, the tower transformer adopts a dry type transformer, which comprises an iron core, a low-voltage coil 1 and a high-voltage coil 5 which are sleeved on the iron core, and iron core clamping pieces 13 are arranged at the upper end and the lower end of the iron core; each winding sleeved in the low-voltage coil is cast into an integral structure by resin, an air channel plate is pre-embedded between every two adjacent windings, and the air channel plate is extracted after casting molding to form a ventilation air channel 2;

an insulating cylinder 12 is arranged between the low-voltage coil and the high-voltage coil at intervals; insulating cushion blocks 6 are installed at two ends of the low-voltage coil and the high-voltage coil and are located between the end face of the coil and an iron core clamping piece 13, and a pressing nail bolt 9 is installed on the iron core clamping piece to tightly press the insulating cushion blocks, so that the coil is tightly pressed.

The core clamps 13 are mounted on both sides of the yoke 4 to clamp the yoke.

One side of the insulating cushion block is provided with an arc-shaped boss 7, and the boss is inserted into a gap between the high-voltage coil and the low-voltage coil for fixing; the boss is provided with an arc-shaped clamping groove 16, and the end part of the insulating cylinder 12 between the low-voltage coil and the high-voltage coil is inserted into the clamping groove; the matching position of the other side of the cushion block and the pressing nail is provided with a groove 11, a steel plate cushion 10 is placed in the groove for reinforcement, and the steel plate cushion enhances the vibration and impact resistance.

A plurality of vertical supporting strips 3 which are uniformly distributed are added between the low-voltage coil 1 and the iron core column 8, so that the low-voltage coil and the iron core are firmly fixed with each other, and the relative displacement between the low-voltage coil and the iron core due to vibration is prevented.

The insulating cylinder 12 is made of resin, the insulating cushion block 6 is made of resin, and an inclined plane 15 for avoiding the iron core is arranged on one side of the insulating cushion block.

1. The low-voltage coil of the dry type transformer adopts integral casting (as shown in figure 1), the low-voltage coil adopts foil winding, and the low-voltage coil is integrally cast by resin, so that the low-voltage coil becomes a firm whole body. 2. The low-voltage coil and the iron core of the dry-type transformer are fixed by a stay (as shown in figure 2), and the stay is added between the low-voltage coil and the iron core to firmly fix the low-voltage coil and the iron core, so that the low-voltage coil and the iron core cannot generate relative displacement due to vibration. 3. The dry-type transformer cushion block adopts a convex reinforcing boss (as shown in figure 3), and the cushion block adopts a convex boss to fix the relative position between the high-voltage coil and the low-voltage coil at the position close to the high-voltage coil and the low-voltage coil. 4. The dry-type transformer cushion block is reinforced by a steel plate cushion (as shown in figure 3), a groove is formed in the cushion block at the matching part of the cushion block and the pressing nail, and the steel plate cushion is matched to reinforce the vibration and impact resistance.

Claims

1. A structure for improving vibration resistance and impact resistance of a tower transformer adopts a dry type transformer, and comprises an iron core, a low-voltage coil and a high-voltage coil, wherein the low-voltage coil and the high-voltage coil are sleeved on the iron core; it is characterized in that: each winding sleeved in the low-voltage coil is cast into an integral structure by resin, an air channel plate is pre-embedded between every two adjacent windings, and the air channel plate is drawn out after casting molding to form a ventilation air channel;

2. The structure for improving vibration and shock resistance of a tower transformer as claimed in claim 1, wherein: one side of the insulating cushion block is provided with an arc-shaped boss, and the boss is inserted into a gap between the high-voltage coil and the low-voltage coil for fixing; the boss is provided with an arc-shaped clamping groove, and the end part of the insulating cylinder between the low-voltage coil and the high-voltage coil is inserted into the clamping groove; the other side of the cushion block is provided with a groove matched with the pressing nail, a steel plate cushion is placed in the groove for reinforcement, and the steel plate cushion enhances the vibration and impact resistance.

3. The structure for improving vibration and shock resistance of a tower transformer as claimed in claim 1 or 2, wherein: a plurality of vertical supporting strips which are uniformly distributed are added between the low-voltage coil and the iron core, so that the low-voltage coil and the iron core are firmly fixed with each other, and the relative displacement between the low-voltage coil and the iron core caused by vibration is prevented.

4. The structure for improving vibration and shock resistance of a tower transformer as claimed in claim 1 or 2, wherein: a section of gap is reserved between the adjacent air channel plates, and resin in the gap is used for bonding the inner and outer adjacent low-voltage windings together.

5. The structure for improving vibration and shock resistance of a tower transformer as claimed in claim 1 or 2, wherein: the insulating cylinder is made of resin, the insulating cushion blocks are made of resin, and inclined planes used for avoiding the iron core are arranged on one sides of the insulating cushion blocks.