Roof insulator suitable for high-speed electric locomotive

Abstract

The invention discloses a roof insulator suitable for a high-speed electric locomotive. The roof insulator comprises an upper hardware fitting, a lower hardware fitting, an outer sleeve and a core rod, wherein the outer sleeve comprises a plurality of umbrella skirts which are arranged in the axial direction of the core rod and arranged at the side wall of the core rod around the core rod, the upper end of the core rod is connected with the upper hardware fitting, the lower end of the core rod is connected with the lower hardware fitting, and the core rod has a skeleton structure; the skeletonstructure is formed by a plurality of support teeth which surround the outer wall of the core rod and are perpendicular to the axial direction of the core rod, and the number of the support teeth isin one-to-one correspondence with that of the umbrella skirts; the support teeth extend outwards in the radial direction of the core rod and protrude out of the side wall of the core rod; each supporttooth extends outwards from the upper end and the lower end of the connection of the support tooth and the core rod in the radial direction of the core rod and gradually shrinks towards the horizontal direction to form a tooth tip part. The core rod with the skeleton structure can effectively prevent the insulator from tearing the root of the shed, overlapping the shed and the like under the condition of high wind speed, and ensures the insulating property of the insulator.

Description

technical field [0001] The invention is suitable for roof insulators of high-speed electric locomotives, and is also suitable for external insulation of power lines and related insulator structures of electrical equipment. Background technique [0002] At present, the design speed of high-speed trains in my country has reached 350km / h, and the maximum wind speed of high-speed electric locomotive roof insulators is over 85m / s. In the long-term strong wind environment, the shed of the roof insulator undergoes high-frequency and large-scale vibration and deformation, resulting in stress concentration at the root of the shed, which eventually leads to tearing of the shed and damage to the insulation of the insulator. At the same time, as the train runs at high speed, a large number of pollution particles are deposited on the surface of the insulator. At the same time, the roof insulator is affected by the unidirectional airflow, which makes the pollution distribution on the insu...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a roof insulator suitable for high-speed electric locomotives, which solves the problems of the existing roof insulators such as tearing of the shed and flashover of insulator pollution under high wind speed and strong wind and sand conditions, and helps It can further improve the safe and stable operation level of high-speed railways by reducing train delays or unplanned outages caused by insulator flashover

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