Non-winding non-capacitive type compound insulation casing pipe

Abstract

The invention relates to a low-voltage casing pipe, in particular to a non-winding non-capacitive type compound insulation casing pipe. The non-winding non-capacitive type compound insulation casing pipe sequentially comprises a metal guide rod (11) and an insulation framework (9) from inside to outside, and is characterized in that an organic compound umbrella skirt (8) is arranged on the upper portion of the outer side of the insulation framework (9), a metal flange (10) is arranged on the lower portion of the outer side of the insulation framework (9), and the lower edge of the organic compound umbrella skirt (8) partially covers the outer side of the upper edge of the metal flange (10); a lower tray (13) which extends outwards and is used for locating the insulation framework (9) is arranged at the lower end of the metal guide rod (11), and the outer diameter of the lower tray (13) and the bottom of the insulation framework (9) are fixedly connected through an insulation pin (12). The non-winding non-capacitive type compound insulation casing pipe has the advantages that the mass of the casing pipe is small, the casing pipe resists bumping, and the good pollution flashover prevention level is achieved; the high mechanical strength and mechanical impact resisting performance are achieved; an electric field at the oil end of the casing pipe is more even, and the risk of flashover of the oil end of the casing pipe is greatly lowered.

Description

Technical field [0001] The invention relates to a low-voltage casing, in particular to a non-winding non-capacitive composite insulating casing. Background technique [0002] The low-voltage bushings currently in use mainly fall into the following categories: oil-filled pure porcelain bushings, grease capacitive bushings and capacitive dry bushings. Oil-filled pure porcelain bushings have the advantages of simple manufacture and low price. However, due to their material problems, they have problems such as heavy weight, fear of bumps, fear of dirt, and easy leakage; while oil-paper capacitors and colloidal capacitors are dry Due to the introduction of capacitor voltage divider, the electric field of the bushing is more uniform and the safe operation level is relatively improved. However, due to the introduction of capacitors, it has problems such as complicated manufacturing process, high price, and heavy weight. It is necessary to improve the existing oil-filled pure porcelain ...

AI Technical Summary

Problems solved by technology

The oil-filled pure porcelain casing has the advantages of simple manufacture and cheap price, but due to its material problems, it has problems such as heavy weight, fear of bumping, fear of contamination, and easy leakage; while oil-paper capacitors and gel capacitors are dry. Due to the introduction of capacitor voltage dividing bushing, the electric field of the bushing is more uniform and the level of safe operation is relatively improved. However, due to the introduction of capacitors, it has problems such as complicated manufacturing process, high price, and heavy weight. Therefore, there are It is necessary to improve the existing oil-filled pure porcelain bushing to better meet the needs of actual use

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