110-degree opening protection dihedral angle ring for transformer insulation

Abstract

The utility model relates to the field of transformer insulating parts, in particular to a 110-degree opening protection dihedral ring for transformer insulation. Comprising an insulating cylinder, the upper end of which is provided with an insulating dihedral ring; the insulating layer gasket is arranged at the lower end of the insulating cylinder; the insulating layer pressing ring is arranged at the upper end of the insulating dihedral ring; wherein the dihedral ring for insulation is divided into an inner ring and an outer ring, the inner ring is horizontal, the included angle between the outer ring and the inner ring is 110 degrees, and uniformly distributed open grooves are formed in the outer side of the outer ring; when oil circulation is carried out on the transformer coil, if the protection angle ring is 90 degrees, oil passing through the protection angle ring cannot well enter the coil, and the coil cannot be well cooled. And after the angle is changed into 110 degrees, oil can be blocked into the coil by 20 degrees when passing through the protection angle ring, so that the coil can be fully immersed into the oil to be cooled.

Description

Technical Field

[0001] The utility model relates to the field of transformer insulation parts, in particular to a 110-degree opening protective contra-angle ring for transformer insulation. Background Art

[0002] Transformer insulation moldings are primarily used in power transmission equipment such as transformers. They improve transformer insulation reliability, offer exceptional electrical performance, form an excellent oil barrier, mitigate the effects of vertical electric fields, reduce various losses, and reduce transport weight and dimensions per unit capacity. They feature stable molding, appropriate strength, and minimized insulation distances. With the continuous development of China's power industry, the demand for large-capacity power stations and long-distance transmission and transformation lines is increasing, and the capacity and voltage levels of power transmission and transformation equipment such as transformers are constantly increasing. This has led to increasingly stringent requirements for the operational reliability of power transmission equipment, creating an urgent need for high-quality insulation moldings.

[0003] The angle between the high and wide sides of the currently used open protection contra-angle ring is 90°. This product plays the role of blocking oil in the coil, but the oil sealing effect is not ideal at 90°.

[0004] Therefore, there is an urgent need to provide an improved technical solution to solve the above technical problems. Utility Model Content

[0005] The purpose of the utility model is to solve the above-mentioned technical problems and provide a 110° opening protective contra-angle ring for transformer insulation, which can enable the coil to be fully immersed in oil for cooling.

[0006] In view of this, the utility model provides a 110° opening protection contra-angle ring for transformer insulation, comprising:

[0007] An insulating cylinder, the upper end of which is provided with an insulating contra-angle ring;

[0008] An insulating layer washer is arranged at the lower end of the insulating cylinder;

[0009] Insulation layer pressing ring, the insulation layer pressing ring is arranged on the upper end of the insulating contra-angle ring;

[0010] Among them, the insulating contra-angle ring is divided into two parts: an inner ring and an outer ring. The inner ring is horizontal, the angle between the outer ring and the inner ring is 110°, and evenly distributed grooves are provided on the outside of the outer ring.

[0011] Furthermore, the insulating reverse angle ring is made of natural high-purity insulating pulp material.

[0012] Furthermore, a sealing ring is provided at the lower end of the insulating contra-angle ring.

[0013] Furthermore, an adhesive layer is provided between the insulating cylinder and the insulating concave angle ring, and the adhesive layer is made of insulating adhesive material.

[0014] Furthermore, the insulating reverse angle ring includes four petals, one end of each petal is provided with a dovetail block, and the other end is provided with a dovetail groove, and adjacent petals are connected together through the dovetail block and the dovetail groove, and the two ends of the petal are parallel inclined surfaces.

[0015] The beneficial effects of the utility model are:

[0016] 1. In this utility model, when the transformer coil is circulating in oil, if the protective angle ring is 90°, the oil passing through the protective angle ring cannot enter the coil well, and the coil cannot be cooled properly. When the angle is changed to 110°, the oil passing through the protective angle ring is blocked by the extra 20° and enters the coil, allowing the coil to be fully immersed in the oil and cooled.

[0017] 2. When installing the utility model, the petals are placed on the upper edge of the insulating cylinder, and the dovetail blocks between the petals are inserted into the adjacent dovetail grooves, so that the petals form a complete insulating reverse angle ring. Then, the insulating layer pressing ring and the insulating layer gasket are installed to form a complete insulating molded part. By setting the contact surface between the two petals to an inclined surface, the sealing can be better increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 It is a schematic structural diagram of a cross section of the present utility model;

[0020] Figure 3 This is a schematic diagram of the installation structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the petal connection structure of the present utility model.

[0022] The marks in the figure are:

[0023] 1. Insulating cylinder; 2. Insulating concave angle ring; 3. Insulating layer gasket; 5. Insulating layer pressing ring; 6. Outer ring; 7. Inner ring; 8. Sealing ring; 9. Adhesive layer; 10. Petals; 11. Dovetail block; 12. Dovetail groove; 13. Slotting. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0025] Example 1:

[0026] This embodiment provides a 110° opening protection contra-angle ring for transformer insulation, comprising:

[0027] An insulating cylinder 1, with an insulating contra-angle ring 2 provided at the upper end of the insulating cylinder 1;

[0028] An insulating layer washer 3 is arranged at the lower end of the insulating cylinder 1;

[0029] Insulation lamination ring 5, the insulation lamination ring 5 is arranged on the upper end of the insulating contra-angle ring 2;

[0030] The insulating contra-angle ring 2 is divided into two parts: an inner ring 7 and an outer ring 6 . The inner ring 7 is horizontal, and the angle between the outer ring 6 and the inner ring 7 is 110°. Uniformly distributed slots 13 are provided on the outer side of the outer ring 6 .

[0031] When the transformer coil is circulating oil, if the protective angle ring is at 90°, the oil passing through the protective angle ring will not be able to properly enter the coil, and the coil cannot be properly cooled. When the angle is changed to 110°, the oil passing through the protective angle ring will be blocked by the extra 20° when entering the coil, allowing the coil to be fully immersed in the oil and cooled.

[0032] Example 2:

[0033] This embodiment provides a 110° open protective contra-angle ring for transformer insulation. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0034] The insulating contra-angle ring 2 is made of natural high-purity insulating paper pulp material.

[0035] The insulating contra-angle ring 2 is made of natural high-purity insulating pulp material, which improves the strength of the equipment, avoids structural damage to the contra-angle ring after long-term use, and extends its service life.

[0036] Example 3:

[0037] This embodiment provides a 110° open protective contra-angle ring for transformer insulation. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0038] A sealing ring 8 is provided at the lower end of the insulating contra-angle ring 2 .

[0039] A sealing ring 8 is provided at the lower end of the insulating contra-angle ring 2 to improve the sealing performance and prevent dust from entering the contra-angle ring and causing pollution.

[0040] An adhesive layer 9 is provided between the insulating cylinder 1 and the insulating concave angle ring 2 , and the adhesive layer 9 is made of insulating adhesive material.

[0041] An adhesive layer 9 is provided between the insulating cylinder 1 and the insulating concave angle ring 2 . The adhesive layer 9 is made of insulating adhesive material to improve the stability of the connection and prevent shaking and falling off.

[0042] The insulating contra-angle ring 2 includes four petals 10, each of which is provided with a dovetail block 11 at one end and a dovetail groove 12 at the other end. Adjacent petals 10 are connected together through the dovetail blocks 11 and the dovetail grooves 12, and the two ends of the petals 10 are parallel inclined surfaces.

[0043] During installation, the petals 10 are placed on the upper edge of the insulating cylinder 1, and the dovetail blocks 11 between the petals 10 are inserted into the adjacent dovetail grooves 12, so that the petals 10 form a complete insulating reverse angle ring 2. Then, the insulating layer pressing ring 5 and the insulating layer gasket 3 are installed to form a complete insulating molded part. By setting the contact surface between the two petals 10 to a bevel, the sealing can be better increased.

[0044] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which fall within the scope of protection of this application.

Claims

1. A 110° opening protection contra-angle ring for transformer insulation, characterized in that: include: An insulating cylinder (1), wherein an insulating contra-angle ring (2) is provided at the upper end of the insulating cylinder (1); An insulating layer washer (3), the insulating layer washer (3) being arranged at the lower end of the insulating cylinder (1); An insulating layer pressing ring (5), the insulating layer pressing ring (5) is arranged on the upper end of the insulating contra-angle ring (2); The insulating contra-angle ring (2) is divided into two parts: an inner ring (7) and an outer ring (6), and the inner ring (7) is horizontal. The angle between the outer ring (6) and the inner ring (7) is 110°, and evenly distributed slots (13) are provided on the outer side of the outer ring (6).

2. The 110° opening protective contra-angle ring for transformer insulation according to claim 1, characterized in that: The insulating reverse angle ring (2) is made of natural high-purity insulating paper pulp material.

3. The 110° opening protective contra-angle ring for transformer insulation according to claim 1, characterized in that: A sealing ring (8) is provided at the lower end of the insulating contra-angle ring (2).

4. The 110° opening protective contra-angle ring for transformer insulation according to claim 1, characterized in that: An adhesive layer (9) is provided between the insulating cylinder (1) and the insulating reverse angle ring (2), and the adhesive layer (9) is made of insulating adhesive material.

5. The 110° opening protection contra-angle ring for transformer insulation according to claim 1, characterized in that: The insulating contra-angle ring (2) comprises four petals (10), one end of each petal (10) is provided with a dovetail block (11), and the other end is provided with a dovetail groove (12), and adjacent petals (10) are connected together through the dovetail block (11) and the dovetail groove (12), and the two ends of the petal (10) are parallel inclined surfaces.

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