Disk-shaped suspension porcelain or glass composite insulator

Abstract

The invention relates to a disk-shaped suspension porcelain or glass composite insulator, wherein an iron cap is arranged on the upper part of a porcelain element or a glass element, and steel pins are arranged on the lower part thereof, an integral combined shelter is mould pressing formed or injection molded on the middle lower parts of the steel pins, and at least two radial recesses are arranged on the upper surface of the porcelain element or glass element. According to the invention, integral shelters made of organic materials are respectively arranged on the iron cap and steel pins to greatly improve the creepage distance and to reinforce the pollution flashover prevention capability, and the integral shelters can be produced in an industrial large scale manner. The products are manufactured in factories to guarantee the quality of the product interfaces, so the aging speed is slow; the non-ridge structure guarantees a simple production technique; the small dimension greatly reduces the weight of the insulator; the recesses arranged on the upper surface of the porcelain element or glass element to facilitate the rain on the upper surface to flow away; the integral combined shelter arranged on the steel pins can shield the rain to keep the dryness of the upper surface of the next adjacent insulator to improve the wet flashover voltage and to block the electrons emitted by the steel pins so as to improve the dry flashover voltage.

Description

technical field [0001] The invention relates to a disk-shaped suspension insulator for high-voltage AC and DC lines, in particular to a disk-shaped suspension porcelain or glass composite insulator. Background technique [0002] The transmission of electric energy is mainly through overhead transmission lines, and insulators are the most important part of overhead transmission lines. High-voltage lines above 35kV use suspension insulators or suspension insulator strings composed of them. According to the structural shape, suspension insulators are divided into two types: disc shape and rod shape. [0003] The dielectric used in the manufacture of suspension insulators must have the electrical and mechanical properties required for the operation of overhead transmission lines and be sufficiently stable under changing atmospheric conditions. Electric porcelain is the first medium to be used, but it has the following disadvantages: it is difficult to obtain stable electromech...

AI Technical Summary

Problems solved by technology

Electric porcelain is the first medium to be used, but it has the following disadvantages: it is difficult to obtain stable electromechanical properties due to the difficulty in obtaining standard raw materials with stable components, and because of the complexity of the manufacturing process of porcelain, there is no way to solve the mechanization and automation of the main process. , especially in the manufacture of insulators of 16 to 30 tons

[0008] 4. Due to the transparency of glass, it is easy to find small cracks and various internal defects and damages during shape inspection;

[0013] 2. There are 3 to 4 deep ribs under the umbrella skirt. This is to increase the creepage distance, but in essence it reduces the effective creepage distance and increases the possibility of pollution flashover

However, since the anti-fouling flashover coating is a product of on-site construction, there are problems such as difficult quality assurance, high material and labor consumption, and high price, so it can only be used as a temporary and remedial measure

[0020] The applicant has applied for "An Insulator with Combined Barrier" (Chinese Patent Application Nos. 201110393094X and 201120492761.5), which can effectively solve the pollution flashover problem, and the construction is also very flexible, and the versatility is also very good, but the main application of this patent The object is an insulator that has been in operation. From the perspective of barrier installation, the barrier must be divided into two parts. Adhesives are used at the construction site to combine them into a complete barrier. Since it is bonded on site, only room temperature vulcanization can be used. Adhesive, and this adhesive is easy to age; and it is not easy to guarantee the quality of on-site construction, and it must be carried out in the event of a power outage.

Therefore, like antifouling flashover coatings, they are also products of on-site construction, so they can only be used as a temporary and remedial measure

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