A compound supporting pole insulator with extrusion bar as internal core and its making method

Abstract

The invention relates to a composite column insulator with a pulltrusion rod as the inner core, which is used in power transformation and transmission in power industry, and a producing method of the insulator. The invention consists of a winding tube, a core stick, end connecting parts and an umbrella part. The end connecting parts are separately stuck on the two ends of the winding tube. The invention is characterized in that: the winding tube is arranged at the periphery of the core stick, the integrated umbrella is stuck on the out side of the winding tube, and the umbrella is an injecting-formed part made of high-temperature vulcanization silicon rubber; the winding tube is made of epoxy resin adhesive emerged glass roving which is wound and solidified; the pulltrusion rod is used as the inner core of the insulator, so the problem of hollow insulator leakage is avoided; the high strength pulltrusion rod as the inner core of the winding tube greatly increases mechanical performance of the insulator; when producing the winding tube, a track is first simulated, and then pins are fixed on both ends of the core stick. When winding, a tension mechanism with even and constant tensile force is used for control, thus realizing even paving of the glass fiber.

Description

technical field [0001] The invention relates to a composite post insulator for power transmission and transformation in the power industry, in particular to a composite post insulator with a pultruded rod as the inner core and a manufacturing method thereof. Background technique [0002] After retrieving the relevant patent documents, no composite post insulator with the same structure as the present invention with a pultruded rod as the inner core and its manufacturing method have been found. The existing post insulators for power transmission and transformation mainly include: all-ceramic post insulators, porcelain core composite jacket post insulators, hollow composite post insulators and solid composite post insulators. All-ceramic post insulators are heavy and prone to defects such as fracture and brittle fracture. Porcelain core composite sheath post insulators are manufactured by bonding the shed made of silicone rubber synthetic material to the porcelain post. Since...

AI Technical Summary

Problems solved by technology

All-ceramic post insulators are heavy and prone to defects such as fracture and brittle fracture

Porcelain core composite sheath post insulators are manufactured by bonding the shed made of silicone rubber synthetic material to the porcelain post. Since the porcelain core is not made by precision machining, the microscopic unevenness on the surface may easily cause the silicone rubber shed to stick. If the junction is not strong, bubbles and other phenomena will be generated, which will affect the electrical performance and life of the product

Hollow composite post insulators use hollow insulating tubes as posts, and are filled with insulating gas or filled with foam for insulation. Since the gas and fillings are prone to leakage, it is necessary to monitor the changes of the internal gas and fillings, and there are certain hidden dangers in safety.

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