CN210865864U

CN210865864U - Large-scale transformer ware body tip pressure equipment structure

Info

Publication number: CN210865864U
Application number: CN201922335101.5U
Authority: CN
Inventors: 刘洁; 遇游; 王云鹏; 王斯芸; 焦玉龙; 刘会召; 张海栓
Original assignee: Baoding Tianwei Baobian Electric Co Ltd
Current assignee: Baoding Tianwei Baobian Electric Co Ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-06-26
Anticipated expiration: 2029-12-24

Abstract

The utility model relates to a large-scale transformer ware body tip pressure equipment structure belongs to transformer technical field. The technical scheme is as follows: two groups of cushion blocks (4) are arranged at the end part of the winding (1), and the insulating cylinder (5) and the stay (6) are arranged between the two groups of cushion blocks (4); the insulation cylinders (5) are cylindrical, the number of the insulation cylinders is more than one, and the insulation cylinders are arranged from inside to outside along the radial direction of the winding (1); the stay (6) is arranged between the adjacent inner and outer insulating cylinders along the radial direction of the winding (1) and is vertical to the tangent line of the insulating cylinder; the insulating cylinders and the supporting strips are sequentially arranged in the radial direction of the winding in a combined mode, and the height of the insulating cylinders is matched with the distance between the two groups of cushion blocks. The utility model discloses when receiving the short-circuit force effect, novel ware body pressure equipment structure can effectively bear the short-circuit force and avoid receiving the damage, improves the anti short-circuit ability of transformer, makes the ware body unlikely to receive the destruction because of the unstability. The structure is simple, the layers are clear, the manufacturability is good, the manufacturing operation is convenient, and the principles of standardization, serialization and universalization are met.

Description

Large-scale transformer ware body tip pressure equipment structure

Technical Field

The utility model relates to a large-scale transformer ware body tip pressure equipment structure belongs to transformer technical field.

Background

With the increase of the capacity of the power system, the short-circuit current is continuously increased, and more users put higher requirements on the short-circuit resisting capacity of the transformer in order to enable the power system to safely and stably run.

In the large transformer body structure, the body compression is realized by pressing cushion blocks at the end parts of the windings. The press-fitting cushion blocks are arranged in an axial stacking mode, and when the transformer is under the action of a short-circuit force, the press-fitting cushion blocks are not constrained, so that the strength of short-circuit bearing capacity is not high, and the press-fitting cushion blocks at the end parts of the windings are easily damaged by the short-circuit force to be decomposed and dislocated, so that the windings are damaged due to instability.

Disclosure of Invention

The utility model aims at providing a large-scale transformer ware body tip pressure equipment structure, through to ware body upper portion end ring structure innovation, change winding upper portion end ring from traditional axial range stack arrangement into novel insulating cylinder stay breadth direction and arrange in proper order and make up the arrangement, and set up the inlet port on the insulating cylinder between the stay and prevent the dead oil district from appearing, when receiving the effect of short-circuit force, can effectively bear the short-circuit force and avoid receiving the damage, improve the transformer and resist the short-circuit ability, make the ware body unlikely to receive the destruction because of the unstability; the structure is simple, the layers are clear, the manufacturability is good, the manufacturing operation is convenient, the principles of standardization, serialization and universalization are met, and the problems in the background technology are effectively solved.

The technical scheme of the utility model is that: a press-fitting structure for the end part of a large transformer body comprises a winding, an inner insulating cylinder, an outer insulating cylinder, a cushion block, an insulating cylinder and a stay, wherein the inner insulating cylinder is arranged on the inner layer of the winding, and the outer insulating cylinder is arranged on the outer layer of the winding; the two groups of cushion blocks are arranged at the end parts of the windings, and the insulating cylinder and the stay bar are arranged between the two groups of cushion blocks; the insulation cylinders are cylindrical, more than one insulation cylinder is arranged along the radial direction of the winding from inside to outside; the stay bars are arranged between the adjacent inner and outer insulating cylinders in the radial direction of the winding and are perpendicular to the tangent lines of the insulating cylinders; the insulating cylinders and the supporting strips are sequentially arranged in the radial direction of the winding in a combined mode, and the height of the insulating cylinders is matched with the distance between the two groups of cushion blocks.

And an oil inlet hole is formed between the upper supporting strips of the insulating cylinder.

The utility model has the advantages that: through the innovation of the structure of the upper end ring of the transformer body, the traditional axial arrangement and stacking arrangement of the upper end ring of the winding is changed into the novel insulation cylinder stay radial sequential arrangement and combination arrangement, and the oil inlet holes are arranged between the stays on the insulation cylinder to prevent dead oil areas from appearing, so that when the short-circuit force acts, the short-circuit force can be effectively borne to avoid damage, the short-circuit resistance of the transformer is improved, and the transformer body is prevented from being damaged due to instability; the structure is simple, the layers are clear, the manufacturability is good, the manufacturing operation is convenient, and the principles of standardization, serialization and universalization are met.

Drawings

FIG. 1 is a schematic diagram of the background art structure of the present invention;

FIG. 2 is a cross-sectional view of the background art A-A of the present invention;

fig. 3 is a schematic structural diagram of the present invention;

fig. 4 is a B-B sectional view of the present invention;

in the figure: the winding comprises a winding 1, an inner insulating cylinder 2, an outer insulating cylinder 3, a cushion block 4, an insulating cylinder 5 and a stay 6.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and embodiments.

A press-fitting structure for the end part of a large transformer body comprises a winding 1, an inner insulating cylinder 2, an outer insulating cylinder 3, a cushion block 4, an insulating cylinder 5 and a stay 6, wherein the inner insulating cylinder 2 is arranged on the inner layer of the winding 1, and the outer insulating cylinder 3 is arranged on the outer layer of the winding 1; two groups of cushion blocks 4 are arranged at the end part of the winding 1, and the insulating cylinder 5 and the stay 6 are arranged between the two groups of cushion blocks 4; the insulation cylinders 5 are cylindrical, more than one in number and arranged from inside to outside along the radial direction of the winding 1; the stay 6 is arranged between the adjacent inner and outer insulating cylinders 5 along the radial direction of the winding 1 and is vertical to the tangent line of the insulating cylinder 5; the insulating cylinders 5 and the supporting strips 6 are sequentially arranged and combined in the radial direction of the winding 1, and the height of the insulating cylinders is matched with the distance between the two groups of cushion blocks 4.

And an oil inlet hole is formed between the upper supporting strips 6 of the insulating cylinder 5.

In practical application, through to ware body upper portion end ring structure innovation, arrange winding upper portion end ring by traditional axial arrangement stack and change into novel insulating cylinder stay breadth direction and arrange in proper order the combination to set up the inlet port and prevent that the dead oil district from appearing on the insulating cylinder between the stay.

When receiving the short-circuit force effect, novel ware body pressure equipment structure can effectively bear the short-circuit force and avoid receiving the damage, improves the anti short-circuit ability of transformer, makes the ware body unlikely to receive the destruction because of the unstability. The structure is simple, the layers are clear, the manufacturability is good, the manufacturing operation is convenient, and the principles of standardization, serialization and universalization are met.

Claims

1. The utility model provides a large-scale transformer ware body tip pressure equipment structure which characterized in that: the winding structure comprises a winding (1), an inner insulating cylinder (2), an outer insulating cylinder (3), a cushion block (4), an insulating cylinder (5) and a stay (6), wherein the inner insulating cylinder (2) is arranged on the inner layer of the winding (1), and the outer insulating cylinder (3) is arranged on the outer layer of the winding (1); two groups of cushion blocks (4) are arranged at the end part of the winding (1), and the insulating cylinder (5) and the stay (6) are arranged between the two groups of cushion blocks (4); the insulation cylinders (5) are cylindrical, the number of the insulation cylinders is more than one, and the insulation cylinders are arranged from inside to outside along the radial direction of the winding (1); the stay (6) is arranged between the inner and outer adjacent insulating cylinders (5) along the radial direction of the winding (1) and is vertical to the tangent line of the insulating cylinder (5); the insulating cylinders (5) and the supporting strips (6) are sequentially arranged in the radial direction of the winding (1) in a combined mode, and the height of the insulating cylinders is matched with the distance between the two groups of cushion blocks (4).

2. The end press-fitting structure of the large transformer body according to claim 1, wherein: and an oil inlet hole is formed between the upper supporting strips (6) of the insulating cylinder (5).