Novel composite suspended type disc-shaped insulator with improved structure

Abstract

The invention discloses a novel composite suspended type disc-shaped insulator with an improved structure. The novel composite suspended type disc-shaped insulator is provided with an iron cap and a steel foot, wherein the iron cap and an inner core of the insulator are integrally bonded by an iron-cap bonding agent; the steel foot and the inner core and the insulator are integrally bonded by a steel-foot bonding agent; silicone-rubber umbrella wings are arranged on the outer surface of the inner core of the insulator; at least one circle of ring groove is formed in the inner core of the insulator; the bonding agent is used for filling and curing between the ring groove and the outer wall of the iron cap. The novel composite suspended type disc-shaped insulator disclosed by the invention has the advantages that due to the structure characteristics of the ring groove, the axial size of the inner core of the insulator is increased, the diameter of the silicone-rubber umbrella wings is reduced, the quantity of the umbrella wings are increased, the creepage distance is increased, the use performance of a product and the whole performance of the product are improved, the broken rate when the product is stuck by lightning or impacted by voltage in use is reduced and the service life of the product is prolonged; when the insulator is constructed and maintained, the suspending operation is simple and convenient; by preliminary test in a factory, the creepage distance can be increased by 80%-250%, and the promotion and application values are extremely high.

Description

technical field [0001] The invention belongs to a disk-shaped composite insulator used in power lines, and is precisely a novel composite suspension-type disk insulator with an improved structure. Background technique [0002] For the currently used composite disc insulators, the structure of the inner core has been using the basic structure of the original porcelain or glass disc insulators, and a layer of silicone rubber umbrella is added to the outer surface, (the umbrella is also called Umbrella skirt) has been greatly popularized and applied although it has solved many problems, such as anti-pollution flashover, durability, and reducing the time and frequency of line cleaning. However, due to the use of the original disc-shaped structure, an inevitable problem in manufacturing and actual use has been caused, that is: due to the short axial dimension of the disc-shaped insulator in the original structure, the number of umbrella wings is only 1 To 2, barely reaching 3 at...

AI Technical Summary

Problems solved by technology

However, due to the use of the original disc-shaped structure, an inevitable problem in manufacturing and actual use has been caused, that is: due to the short axial dimension of the disc-shaped insulator in the original structure, the number of umbrella wings is only 1 Up to 2, barely reaching 3 at most, under strict experimental conditions such as steep wave and creepage experiments and harsh conditions in practical applications, it is very easy to fail

Moreover, the structure of the iron cap has always been that its inner wall is solidified and connected to the inner core through an adhesive. Due to its small connection force, it is difficult to increase its suspension force. For ultra-high voltage power supply, it has formed a bottleneck of limiting the number of insulators.

In order to improve the creepage distance and anti-puncture performance, it is necessary to increase the diameter of the silicone rubber umbrella wing, but after increasing the diameter of the umbrella wing, the deformation and sagging of the umbrella wing are caused, which not only affects the suspension construction, but also causes damage to the umbrella wing. Short-circuit accidents occur between them, making it unable to meet the needs of high-level voltage lines in practical applications, and it is also inconvenient to maintain

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