Ascending base insulating cylinder structure for transformer sleeve

Abstract

The utility model relates to an ascending flanged base insulating cylinder structure for a transformer sleeve, and belongs to the technical field of transformers. According to the technical scheme, the device comprises an insulating cylinder (1), an insulating sealing plate (2) and a limiting bent plate (3), the insulating cylinder (1) is sleeved outside the oil side of the sleeve, a mounting hand hole is formed in the position, corresponding to the wiring part of the oil side of the sleeve, of the insulating cylinder (1), the slidable insulating sealing plate (2) is arranged at the mounting hand hole, and the insulating sealing plate (2) is limited by the limiting bent plate (3) fixed on the insulating cylinder (1). The utility model has the positive effects that: while the in-oil side wiring is carried out after the transformer bushing and the transformer body are assembled, the insulating cylinder protection can be added for the in-oil part of the guide rod type bushing, so that the allowable field intensity of the bushing in the oil is greatly improved, and the operation reliability of the transformer is improved.

Description

Technical Field

[0001] The utility model relates to an insulating cylinder structure of a riser for a transformer bushing, belonging to the technical field of transformers. Background Art

[0002] With the continuous improvement of the load-carrying capacity of transformers, it is required that the rated current of transformer bushings increases accordingly. The feature that the rod-type bushing can carry a larger current is widely adopted. Due to the structural characteristics of the rod-type bushing, the wiring on the oil side needs to be carried out after the transformer bushing and the transformer body are assembled. Therefore, it is impossible to arrange an insulating cylinder to protect the oil side of the bushing, thereby reducing the operation reliability of the transformer. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an insulating cylinder structure of a riser for a transformer bushing, which can add an insulating cylinder protection to the oil part of the rod-type bushing, improve the operation reliability of the transformer, and solve the above problems existing in the background art.

[0004] The technical solution of the utility model is as follows:

[0005] An insulating cylinder structure of a riser for a transformer bushing includes an insulating cylinder, an insulating sealing plate and a limiting bent plate. The insulating cylinder is sleeved outside the oil side of the bushing. An installation handhole is opened at a position corresponding to the wiring part on the oil side of the bushing. A slidable insulating sealing plate is arranged at the installation handhole, and the insulating sealing plate is limited by the limiting bent plate fixed on the insulating cylinder.

[0006] Further, the insulating sealing plate is a rectangular plate bent into an arc shape, covering the outside of the installation handhole. Limiting bent plates are arranged on the left and right side walls and the lower side wall beside the installation handhole, and the insulating sealing plate can slide upward to expose the installation handhole.

[0007] Further, two limiting bent plates are respectively arranged on the left and right side walls beside the installation handhole in an up-and-down manner, and two limiting bent plates are respectively arranged on the lower side wall beside the installation handhole in a left-and-right manner.

[0008] The positive effect of the utility model: While meeting the requirement of wiring on the oil side after the transformer bushing and the transformer body are assembled, it can also add an insulating cylinder protection to the oil part of the rod-type bushing, greatly improve the allowable field strength in the oil of the bushing, and improve the operation reliability of the transformer. Brief Description of the Drawings

[0009] Figure 1 It is a schematic structural diagram of the utility model;

[0010] In the figure: insulating cylinder 1, insulating sealing plate 2, limiting bent plate 3. Detailed Description of the Invention

[0011] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments:

[0012] Combined with the attached Figure 1 , this embodiment provides an insulating cylinder structure for the riser of a transformer bushing, which includes an insulating cylinder 1, an insulating sealing plate 2, and a limiting bent plate 3. The insulating cylinder 1 is sleeved on the middle side of the bushing in the oil. An installation handhole is opened at the position corresponding to the wiring part on the middle side of the bushing in the oil. A slidable insulating sealing plate 2 is arranged at the installation handhole, and the insulating sealing plate 2 is limited by the limiting bent plate 3 fixed on the insulating cylinder 1.

[0013] The insulating sealing plate 2 is a rectangular plate bent into an arc shape, covering the outside of the installation handhole. Limiting bent plates 3 are arranged on the left and right side walls and the lower side wall beside the installation handhole. The insulating sealing plate 2 can slide upward to expose the installation handhole.

[0014] Two limiting bent plates 3 are respectively arranged on the left and right side walls beside the installation handhole in the up and down directions, and two limiting bent plates 3 are respectively arranged on the lower side wall beside the installation handhole in the left and right directions.

[0015] The present utility model arranges an insulating cylinder on the middle side of the bushing in the oil, and opens an installation handhole at the connection part between the insulating cylinder and the bushing in the oil. A slidable insulating sealing plate is arranged at the installation handhole, and the sealing plate is limited by the limiting bent plate fixed on the insulating cylinder. When connecting the terminal of the bushing in the oil to the lead-out wire of the body, the insulating sealing plate is lifted. After the wiring is completed, the insulating sealing plate is restored to its original position, so as to achieve the purpose of adding insulation cylinder protection on the middle side of the rod-type bushing in the oil. Using the insulating cylinder structure of the present utility model can also reduce the size of the riser for the bushing, facilitate the layout of structures such as the lead-out wire of the transformer, thereby reducing the volume of the transformer, reducing the use of materials such as steel plates and oil, saving the occupied space, and saving the comprehensive cost.

Claims

1. An insulating cylinder structure for a riser on a transformer bushing, characterized in that: It includes an insulating cylinder (1), an insulating sealing plate (2) and a limiting bent plate (3). The insulating cylinder (1) is sleeved on the middle side of the bushing in oil. An installation manhole is opened at the position corresponding to the wiring part on the middle side of the bushing in oil. A slidable insulating sealing plate (2) is arranged at the installation manhole, and the insulating sealing plate (2) is limited by the limiting bent plate (3) fixed on the insulating cylinder (1).

2. The insulating cylinder structure of the riser for a transformer bushing according to claim 1, characterized in that: The insulating sealing plate (2) is a rectangular plate bent into an arc shape, covering the outside of the installation manhole. Limiting bent plates (3) are arranged on the left and right side walls and the lower side wall beside the installation manhole. The insulating sealing plate (2) can slide upward to expose the installation manhole.

3. The insulating cylinder structure of the riser for a transformer bushing according to claim 2, wherein: Two limiting bent plates (3) are respectively arranged on the left and right side walls beside the installation manhole in an up-and-down manner, and two limiting bent plates (3) are respectively arranged on the lower side wall beside the installation manhole in a left-and-right manner.

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